Text

2008 Annual Radiological Environmental Operating Report
	ML091260453
Person / Time
Site:	Seabrook
Issue date:	04/27/2009
From:	O'Keefe M; NextEra Energy Seabrook
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	FOIA/PA-2010-0209, SBK-L-09090
	Download: ML091260453 (236)
	v • d • e

NEXTeram EN ERGY

,SEABROK April 27, 2009 Docket No. 50-443 SBK-L-09090 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001 Seabrook Station 2008 Annual Radiological Environmental Operating Report Pursuant to the requirements of 10 CFR 50.36a(a)(2) and Seabrook Station Technical Specification 6.8.1.3, NextEra Energy Seabrook, LLC submits the 2008 Annual Radiological Environmental Operating Report. The report summarizes the implementation of the NextEra 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. William Meyer, Radiation Protection Manager, at (603) 773-7626.

Very truly yours, NextEra Energy Seabrook, LLC Michael O'Keefe Licensing Manager NextEra Energy Seabrook, LLC, P.O. Box 300, Lafayette Road, Seabrook, NH 03874

U. S. Nuclear Regulatory Commission SBK-L-09090/ Page 2 cc: with enclosure S. J. Collins, NRC Region I Administrator D. Egan, NRC Project Manager, Project Directorate 1-2 W. J. Raymond, 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 Schrafft Center, Suite 1M2A 529 Main Street Charlestown, MA 02129

NEXTera 2008 Annual Radiological Environmental Operating Report April 2009

SEABROOK STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT For the Period January - December 2008 Docket No. 50-443 Prepared By:

NextEra Energy Seabrook, LLC Health Physics Department Seabrook Station And AREVA NP Nuclear & Radiation Engineering Marlborough, Massachusetts 01752 Prepared By: ,/ý ,4 Date:

Mark Strum - AREVA NP Reviewed By:1 *&$** 1J Date: 4~IA Matthew Scannell - CHP, NextEra Energy Seabrook, LLC I

Approved By:

Date:

Wilmn Meyer, WextEra Energy Seabrook, LLC

SEABROOK STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT For the Period January - December 2008 April 2009 Docket No. 50-443 Prepared By:

NextEra Energy Seabrook, LLC Health Physics Department Seabrook Station And AREVA NP Nuclear & Radiation Engineering Marlborough, Massachusetts 01752 ii

TABLE OF CONTENTS EXECUTIVE

SUMMARY

.................................................................................................... IV LIST OF TABLES............................................................................................................. VI LIST OF FIGURES........................................................................................................... VIl

1.0 INTRODUCTION

.................................................................................................... 1..

2.0 PLANT OPERATIONS ENVIRONMENTAL MONITORING PROGRAM ..................................... 2 3.0

SUMMARY

PLANT OPERATIONS RADIOLOGICAL ENVIRONMENTAL MONITORING DATA....13 3.1 AIR PARTICULATE ......................................................................................................... 14 3.2 CHARCOAL FILTERS.......................................................................................................22 3.3 MILK ................................................................................................................... 24 3.4 SURFACE WATER...................................................................................................... 30 3.5 GROUNDWATER ..................................................................................................... 33 3.6 SEDIMENT.............................................................................................................. 38 3.7 FISH .................................................................................................................... 41 3.8 LOBSTERS.............................................................................................................. 44 3.9 SHELLFISH............................................................................................................. 47 3.10 IRISHMOSS ............................................................................................................ 51 3.11 FOOD CROP............................................................................................................ 54 3.12 VEGETATION........................................................................................................... 57 3.13 DIRECT RADIATION................................................................................................... 60 4.0 DRY FUEL STORAGE ENVIRONMENTAL MONITORING PROGRAM &

SUMMARY

DATA.......82 4.1 DIRECT RADIATION FROM DFS....................................................................82 5.0 PROGRAM DEVIATIONS AND REPORTING........................................................... 92 5.1 SAMPLING PROGRAM DEVIATIONS.................................................................................. 92 5.2 COMPARISON OF ACHIEVED LLDs WITH REQUIREMENTS....................................................... 93 5.3 COMPARISON OF RESULTS AGAINST REPORTING LEVELS ...................................... 93 6.0 QUALITY ASSURANCE PROGRAM ........................................ I...................................... 96 6.1 INTRAIABORATORY QUALITY CONTROL PROGRAM.............................................................. 96 6.2 THIRD PARTY CROSS CHECK PROGRAM ........................................................................... 96 6.3 BLIND DUPLICATE PROGRAM ....................................................................................... 97 6.4 ENVIRONMENTAL TLD QUALITY ASSURANCE PROGRAM........................................................ 97 7.0 LAND USE CENSUS ................................................................................................... 104 ATTACHMENT 1: SAMPLE ANALYSIS DATA LIST FOR 2008................................................... 106

Executive Summary Both the plant operations and Dry Fuel Storage Radiological Environmental Monitoring Programs (REMP) for Seabrook Station operated successfully for the period of January through December 2008. 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 each environmental sample media. Also included are the results of the Land Use Census, historical data, and the AREVA NP Environmental Laboratory (E-Lab) 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, 2008 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, is 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. The ODCM minimum required plant operations REMP (broad leaf vegetation substituted for lack of sufficient milk locations) includes the collection of 548 samples per year, with a total.

of 2112 individual measurement analyses. In 2008, the total number of collected samples (both required and non-required) equaled 923 taken from 98 locations around Seabrook Station. These included aquatic, atmospheric, and terrestrial environments. An estimated 5799 individual measurement analyses were performed on these samples. The plant operations radiological environmental monitoring program is outlined in Table 2.0-1. Radiation environmental monitoring associated with Dry Fuel Storage (DFS) identified an additional 20 direct radiation measurements using environmental TLDs in 2008. The DFS environmental monitoring program is shown on Table 4.0-1.

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 is detected in the sampling medium, this report shall be submitted if:

Concentration (1) + Concentration (2) + ... > 1.0 Limit Level (1) Limit Level (2)

Based on the analytical results of environmental samples during 2008, Seabrook Station reporting levels were not exceeded.

All off-site radioactivity detected was attributable to either natural occurring radionuclides, previous nuclear weapons tests or other man-made sources.

In 2008, the maximum whole body dose to the hypothetically exposed individual was 0.0136 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 0.05% of the whole body dose limits for a member of the public as set forth in 40CFR1 90.

iv

The average person in the United States receives about 360 mrem/yr (0.36 rem/yr) from-natural background and man-made radiation sources (NCRP 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 mrem/yr 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, natural high concentrations of uranium and radium deposits result in doses of several thousand mrem/yr to their residents (CRC Handbook. "Radioecology: Nuclear Energy and the Environment", F. Ward Whicker and Vincent Schultz, Volume 1, 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 2008 results were similar to previous years. There was no notable increase in natural products and no detectable fission products or other plant related radionuclides in the airborne particulate media during the year.

The direct exposure pathway measures environmental radiation exposures by use of thermoluminescent dosimeters (TLDs). TLD results have indicated a stable trend and compare well with previous years which reflect the natural variability of background radiation from one location to another. No detectable radiation contribution from Seabrook Station sources were identified via TLD environmental measurements off-site during the course of 2008 from either plant operations or from the spent fuel in the Dry Fuel Storage Facility which began operations with the first fuel load in mid-2008 (July 28).

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

The gamma spectroscopy counting indicated positive results for potassium-40 (K-40) at average environmental levels. No plant related radionuclides were detected in any of these sample media during 2008.

The waterborne exposure pathway includes surface (ocean) water, drinking water supply, shallow well water, sea algae (Irish Moss) and sediment. Water samples were analyzed for tritium, gross-beta and gamma-emitting radionuclides. Irish Moss was analyzed for gamma-emitting radionuclides. Tritium was not identified in the samples analyzed. For groundwater, the gross beta activity seen at all locations is similar to what was seen in the pre-operational program and is consistent with results from previous years of commercial operations. Gamma analysis of samples indicated no plant-related gamma-emitting radionuclides above detection limits. There were, however, two instances where Iodine -131 was detected in control area sea algae samples (17.4 km distance from the Station). An evaluation of the samples concluded that the low level of 1-131 was not related to Seabrook due to the distance (water borne dilution) and short half-life of the radionuclide, and lack of any indication that Seabrook had released any detectable 1-131 in liquids during the year.

A special case analysis. of seaweed collected from the station's intake impingement screens.

showed no indication of any recirculation of radioactive effluents back into the plant.

The results of the 2008 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 or any impact to members of the public, associated with the DFS facility. 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 theI nearest resident are at background levels. This is consistent with previous data. As a result, no increasing or decreasing trends were identified.

IV

LIST OF TABLES Number Title Page 2.0-1 Plant Operations Radiological Environmental Monitoring Program ...................... 3 2.0-2 Plant Operations Radiological Environmental Monitoring Locations ....................... 4 3.1-1 REMP Summary (Medium: Air Particulates) ................................................... 20 3.2-1 REMP Summary (Medium: Charcoal Cartridge) ............................................. 23 3.3-1 REMP Summary (Medium: Milk) ................................................................. 28 3.4-1 REMP Summary (Medium: Sea Water) ............................................................ 31 3.5-1 REMP Summary (Medium: Ground Water) ....................................................... 36 3.6-1 REMP Summary (Medium: Sediment) ......................................................... 39 3.7-1 REMP Summary (Medium: Fish) ................................................................. 42 3.8-1 REMP Summary (Medium: American Lobster) .............................................. 45 3.9-1 REMP Summary (Medium: Mussel Body) .................................................. .. 48 3.9-2 REMP Summary (Medium: Mussel Shell) ............ :........................................ 50 3.10-1 REMP Summary (Medium: Irish Moss) ......................................................... 52 3.11-1 REMP Summary (Medium: Food Crops) .......................................................... 55 3.12-1 REMP Summary (Medium: Vegetation) ............................................................ 58 3.13-1 Environmental TLD Measurements ......................................................................... 61 3.13-2 Pre-Operational Environmental TLD Measurements ............................................ 63 4.0-1 Dry Fuel Storage (DFS) TLD Monitoring Locations ............................................... 84 4.1-1 DFS Environmental TLD Measurements (2008) ............................................ 85 5.2-1 Detection Capabilities for Environmental Sample Analysis ........................................... 94 5.3-1 Reporting Levels for Radioactivity Concentrations in Environmental Samples ...... 95 6.1-1 E-LAB Results in Intralaboratory Process.Control Program ..................................... 98 6.2-1 E-LAB Results in the Analytics Cross check Program ......................... ......................... 99 6.3-1 Summary of Blind Duplicate Samples .............................................................. 103 7.0-1 2008 Land Use Census Results ..................................................................... 105 vi

I LIST OF FIGURES I Number Figure 2.1 Title Radiological Environmental Monitoring PaQe I

Locations within 4 Kilometers of Seabrook Station ............................ 7 Figure 2.2 Radiological Environmental Monitoring Locations Between 4 & 12 Kilometers of Seabrook Station .............. 8 I Figure 2.3 Figure 2.4 Radiological Environmental Monitoring Locations Outside 12 Kilometers of Seabrook Station ..................... 9 Direct Radiation Monitoring Locations Within U

Figure 2.5 4 Kilometers of Seabrook Station ...............................................

Direct Radiation Monitoring Locations Between 4 & 12 Kilom eters of Seabrook Station ................................................... 11 10 I

Figure 2.6 Direction Radiation Monitoring Locations Outside 12 Kilometers of Seabrook Station ................................................ 12 I Figure 3.1 Gross-Beta Measurements of Air Particulate Filters ........................ 15 Figure 3.1.1 Gross-Beta Measurements of AirParticulate Filters Q uarterly A verages .................................................................. 16 I

I Figure 3.1.2 Gross-Beta Measurements of Air Particulate Filters Q uarterly Averages .................................................................. 17 Figure 3.1.3 Gross-Beta Measurements of Air Particulate Filters Figure 3.2 Q uarterly A verages ..................................................................

Gross-Beta on Air Particulate Filters Quarterly Averages ....................

18 19 I Figure 3.3 C esium -137 in Milk ................................................................ .. 25 Figure 3.3.1 Figure 3.4.1 Cesium-1 37 in Milk Annual Average Concentrations ....................... 26 Cesium-137 in Milk Annual Average Concentrations ....................... 27 I

Figure 3.5 Figure 3.5.1 Gross-Beta Measurements of Ground Water ................................ 34 Gross-Beta Measurements of Ground Water I

Sem i-Annual Averages ............................................................. 35 Figure 3.6 Figure 3.6.1 Environmental Radiation Measurements (Using TLD's) ..................

Environmental Radiation Measurements (Using TLD's) .................. 65 64 I

Figure 3.7 Figure 3.7.1 Environmental Radiation Measurements (Using TLD's) ......... I............ 66 Environmental Radiation Measurements (Using TLD's) ................. 67 I

I Figure 3.8 Environmental Radiation Measurements (Using TLD's) ................. 68 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 Figure 3.10 Environmental Radiation Measurements (Using TLD's) .................. 71 Environmental Radiation Measurements (Using TLD's) .................. 72 I

Figure 3.10.1 Environmental Radiation Measurements (Using TLD's) .................. 73 I

I vii I

LIST OF FIGURES (Continued)

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 Figure 4.0.1 Dry Fuel Storage TLD Environmental Monitoring Locations .............. 83 Figure 4.1 DFS Control Radiation Measurements (Using TLD's) ...................... 86 Figure 4.2 DFS Environmental Radiation Measurements (Using TLD's) ........... 87 Figure 4.3 DFS Environmental Radiation Measurements (Using TLD's) ............ 88 Figure 4.4 DFS Environmental Radiation Measurements (Using TLD's) ............ 89 Figure 4.5 DFS Environmental Radiation Measurements (Using TLD's) ............ 90 Figure 4.6 DFS Environmental Radiation Measurements (Using TLD's) ............ 91 viii

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 1.0 Introduction NextEra Energy Seabrook, LLC's Radiological Environmental Monitoring Program consist of two interconnected sample collection and measurement schedules that look for environmental influences from: (1) plant operations which release to the environment radioactive materials in liquid and gaseous effluents, and direct radiation from plant facilities inside the power block Protected Area, and (2) direct radiation from used fuel placed in the Dry Fuel Storage (DFS) facility located in the West Southwest sector approximately 0.38 miles from the Containment Building. Several monitoring locations provide data that are shared or used in the assessment of both plant and DFS operations The plant operations Radiological Environmental Monitoring Program (REMP) at Seabrook Station has been designed and carried out to achieve the following specific objectives:

" 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 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.

In July, 2008, the plant operations REMP was supplemented with the DFS environmental monitoring for direct radiation when used nuclear fuel assemblies were for the first time transferred to the on-site DFS facility located WSW of the power block.

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

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

This report is a summary of the findings of the Radiological Environmental Monitoring Program for 2008.

It is being provided in compliance with Part A of Seabrook Stations Offsite Dose Calculation Manual (ODCM) and Technical Specification 6.8.1.3.

I 2.0 Plant Operations Environmental Monitoring Program I Table 2.0-1 outlines the plant operations monitoring program as specified in the Seabrook Station ODCM, Part B, Section 4. Table 2.0-2 lists the operational sampling stations and their specific locations (distances 3

are measured from the center of the Unit 1 Containment Building). The sampling locations are shown on maps in Figures 2.1 through 2.6. The sampling and analysis program 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: 3 AP Air Particulate CF Charcoal Filter TM Milk WG Ground Water WS Surface (Sea) Water SE Sediment FH Fin fish 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 TG Vegetation I

U I

I I

I 3

Table 2.0-1 Plant Operations Radiological Environmental Monitoring Program 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 I

Table 2.0-2 Plant Operations Radiological Environmental Monitoring Locations(a) (b) 2008 I

Station Code Station Distance From Plant Direction From I

(Media - Stq No. Descrintion Zone (km) Plant AP/CF-01 +

AP/CF-02+

PSNH Barge Landing Area Hampton Marina 2.6 2.5 ESE E

I AP/CF-03+ Southwest Boundary 1.0 SW AP/CF-04+

AP/CF-05 West Boundary Winnacunnet High School 1.2 4.0 W

NNE I

AP/CF-07+ PSNH Substation 5.7 NNW AP/CF-08 AP/CF-09+

E&H Substation Georgetown Electric Light Co.

3.4 21.4 SSE SSW I TM-09 Hampton, NH 5.3 NNW TM-15 TM-20 Hampton Falls, NH Rowley, MA 6.9 17.0 8.1 NW S

NNE I

TM-24 North Hampton, NH WG-01 WG-13 Seabrook Town Wells Seabrook Station Well No. 13 5.6 1.0 W

N I

WG-14 Brimmer's Lane 1.3 NNW WS-01+ Hampton-Discharge Area 5.3 16.9 E

SSE I

WS-51 + -Ipswich Bay WS-02 SE-02 Seabrook Marsh Hampton-Discharge Area 0.1 5.3 SSE E

I SE-07 Hampton Beach 3.1 E SE-08+

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

FH-03+

FH-53+

Hampton-Discharge Area Ipswich Bay 4.5 16.4 ESE SSE I

HA-04+ Hampton-Discharge Area 5.5 E HA-54+ Ipswich 17.2 SSE MU-06+

MU-09 Hampton-Discharge Area Hampton Harbor 5.2 2.6 E

E I MU-56+

MU-59 Ipswich Bay Plum Island 17.4 15.8 SSE SSE I MS-06 Hampton-Discharge Area 5.2 E MS-56 AL-05 Ipswich Bay Hampton-Discharge Area 17.4 5.2 SSE E

I AL-55 Ipswich Bay 17.4 SSE AL-El Intake Impingement Screens On-Site TF-02 Hampton Falls, NH 2 5.0 WNW TF-03 Salisbury, Ma, 5.1 SW TF-06 Ipswich, Ma 2 26.0 S I

Table 2.0-2 (Cont'd)

Plant Operations Radiological Environmental Monitoring Locations(a)(b) 2008 Distance From Direction Station Code Station Plant From (Media - Sta. No.) Description Zone (km) Plant TG-08+ North Access Rd, Site Boundary 1 1.05 W TG-09+ General Office Bid. Site Boundary 1 0.94 SW TG-10+ Georgetown Electric Light Co. 2 21.4 SSW TL-01+ Brimmer's Lane, Hampton Falls 1 1.0 N TL-02+ Landing Road, Hampton 3.0 NNE TL-03+ Glade Path, Hampton Beach 1 2.9 NE TL-04+ Island Path, Hampton Beach 1 2.3 ENE TL-05+ Harbor Road, Hampton Beach 1 2.6 E TL-06+ PSNH Barge Landing Area 1 2.7 ESE TL-07+ Cross Road, Seabrook Beach 1 2.6 SE TL-08+ Farm Lane, Seabrook 1.3 SSE TL-09+ Farm Lane, Seabrook 1.3 S TL-10+ Site Boundary Fence 1.2 SSW.

TL-1 1+ Site Boundary Fence 1.0 SW TL-12+ Site Boundary Fence 1.2 WSW TL-13+ Inside Site Boundary 1.2 W TL-14+ Trailer Park, Seabrook 1.1 WNW TL-15+ Brimmer's Lane, 1.3 NW Hampton Falls TL-16+ Brimmer's Lane 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 Table 2.0-2 (Cont'd)

Plant Operations Radiological Environmental Monitoring Locations(a) (b) 2008I Distance From Direction Station Code Station Plant From (Media - Sta. No.) Description Zone (km) 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+

TL-40+

TL-41 Fremont, NH Newmarket, NH Portsmouth, NH 2

2 2

27.0 21.6 21.0 NW NNW NNE I

TL-42 Ipswich, MA 2 22.8 SSE TL-43 TL-44 Rocks Road Landing Education (Science & Nature) Center S

S 0.3 0.6 ENE SW I

TL-45 Hampton Fire Station S 4.4 NE TL-46 Seabrook Beach S 2.8 ESE TL-47 Hampton Falls, NH S 4.1 WNW Zone indices are: 1= Indicator Stations; 2 = Control Stations; 0 = Outer Ring TLD; I I = Inner Ring TLD; S = Special Interest TLD

+ = Sample Locations required by the Off-Site Dose Calculation Manual (ODCM) I (a) Dry Fuel Storage (DFS) locations are listed on Table 4.0-1.

(b) Table reflects those locations included in the 2008 sample collection program.

I

. ., ÷

n---m u - - m - m - - m m -mnnm

'0 CL Figure 2.1 REMP Locations Within 4 Kilometers Ce.

0.

LEGEND to Sampling Locations rn AP - Air Particulate CF - Charcoal Filter 3 CD SWG - Well Water

MU - Mussels 0 SE - Sediment 0o

- TG - Vegetation 0 0

WS - Sea Water 9) 0 3

CD CD) 0 CD, CD Miles 0

0 .5 1 C/)

0

"1"1 Figure 2.2 REMP Locations Between 4 and 12 Kilometers Co 0.

Sampling Locations _

m A Pi, AP - Air Particulate CF = Charcoal Filter -3 3

A. AL - Algae FH - Fish MU -Mussels SE - Sediment WS- Sea Water 0

'* HA - Lobster cn -'

B TM-Milk c 0 0 7.

TF - Food Products WG - Well Water CC)

CD

=3 2:Miles CD 3"

<0 00 1 2 o o

is 0J

- -- m - m mn m m- m m m l

m M - = w - -= = - = - M Ml M M =

21 0C-Figure 2.3 REMP Locations Outside 12 Kilometers LEGEND 0.

w Sampling Locations (0 AP - Air Particulate rn CF - Charcoal Filter 0 AL - Algae 3 CD FH - Fish S-1 MU = Mussels SE = Sediment 0 WS - Sea Water Co (b, HA - Lobster

TM - Milk 0

0 V TF - Food Product 0

U)

-* TG - Vegetation 0

C (n

CD Xo 3

CD Miles C,)

0 0 5 10 (D a) a-B 0

Fgure 2.4 Direct Radiation Monitoring Locations Within 4 Kilometers (Q.

LEGEND 2D Sampling Locations 0 x TLD's 0

0 o

0 0 0 R

0

3 AN 3

CD 0

C,,

CD Miles 0 CO, 0 .5 1 0

m m m = m m m m m m- -n m - m m -

nminmi nn - -- ll m m Hm m 2i Figure 2.5 Direct Radiation Monitoring Locations Between 4 and 12 Kilometers Cl LEGEND 0 opo K "X TLDs$ 0 0

0 CD

3 x3 90 0 1 CD 0

KM CDa 0~

0 1 2 0 0

-r r'3

'C) 0 DO 0.

0 0

5.

I--

0C) 0 0

CL i.

CD 3

CD U) 0 0o 0

0 0

m m - m m m -= m m m m m m m = -

3.0 Summary of Plant Operations Radiological Environmental Monitoring Data The following pages summarize the analytical results of the plant operations environmental samples, which were collected in 2008. 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 medium. 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.

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. contains the data for the samples collected in 2008. The results are organized by sample type, within each sample type listing the data are alphabetical by nuclide, and within each nuclide listing the data are chronologically arranged by end date (date of sample collection).

The radionuclide value concentrations 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 ParticulateI Air monitoring stations were established at a total of eight locations, six locations required by the 00CM with two additional sites included to supplement the program. Seven of the locations are indicators; whileU the remaining one is a control station located more than 21 km away from the plant.

Airborne particulate (AP) is collected by passing the air through a glass-fiber filter. In 2008, these filters were collected 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 activityI (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 implemented in 2005 for all air particulate stations as a result of equipment / procedure upgrades that were designed to reduce potential systemI down time due to unidentified 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 2008. For the year (including continuation from the last reported airI sample results for 2007), 216 particulate filters were collected bi-weekly and analyzed for gross beta activity.

The 2008 gross beta activity analyses for the indicator locations were found to be statistically equivalent toI that seen at the control station. The gross beta results are also similar to what was seen in the pre-operational program and for the last nineteen years of commercial operation. All filter samples from all stations showed similar trends lines (see Figure 3.1) over the course of the year and from previous years, (see Figures 3.1.1, 3.1.2, and 3.1.3). Figure 3.2 compares the quarterly average gross beta response of all indicator air sampling stations to the control location over the last 14 years, which shows no significant difference in the two data sets. It is also noted that no plant related radionuclides were identified in any of-the quarterly filter composite samples. The overall fluctuations at all stations seen in the gross beta activity.I throughout the year can be attributed to changes in the environmental conditions. Natural environmental' processes such as wind direction, precipitation, snow cover, and soil temperature and moisture affect concentrations of natural occurring radionuclides in the atmosphere directly above land.

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 2008, natural occurring Be-7 was the only radionuclide detected. Be-7 is of cosmogenic origin. This is consistent withI previous years both pre- and operational periods.

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. The REMP Summary Table 3.1-1 list the range of analysis results by radionuclide for Indicator and Control Stations for the air particulate environmental media. Attachment 1 to this report lists the individual analysis results for each measurement of air particulates under theI Sample Type code AP.

Air particulate sample collection and analysis deviations from the 00CM required program are described in Section 5. A total of 8 deviations were recorded for interruptions in continuous air sampler operation which were detected by telemetry. All 8 of the interruptions were the result of loss of supply line power to the units which were corrected when power was restored. Two of the interruptions were the result of power being removed temporarily to permit maintenance work to be performed safely.

FIGURE 3.1 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS SEABROOK STATION 0.08 0.08 0.07 0.07 0.06 0.06 0.05 0.5- 0.05 E

. 0.04 0.04 C. 0.03 0.03 0.02 0.02 0.01 0.01 0 0 January February April June August October December 2008 AP-01 Barge Landing Area

-+-AP-02 Hampton Marina

-+--AP-03 SW Boundary

-AP-04 W Boundary

AP-05 Winnacunnet High School

--

AP-09 Georgetown (Control)

--- AP-07 PSNH Substation, Hampton

-0 AP-08 Exeter & Hampton Electric Co.

FIGURE 3.1.1 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS I QUARTERLY AVERAGES SEABROOK STATION 3 0.16 3 Chernobyl 0.14 May, 1986 3 0.12 I 0.1 E

0.08 Q- 0.06 -June, 5% Criticality 1989 IFull PowerI 0.0 I 0.04- May, 1990 0.02 I 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 I

- AP-01 Barge Landing Area

-E-- AP-02 Hampton Marina

AP-03 SW Boundary

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

FIGURE 3.1.2 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATION Chernobyl May, 1986 0.14 0.12 a) 0.1 E

0.08 CL) 5% Criticality 0.06 June, 1989 Full Power May, 1990 0.04 FulPoe 0.02 W,

0 198 6 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 AP-04 W Boundary

-B- AP-05 Winnacunnet High School

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

FIGURE 3.1.3 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATION 0.16 Chernobyl 0.14 May, 1986 0.12 0.1 (D

a)

E Z 0.08 U

O 5% Criticality June, 1989 Full Power 0.04 May, 1990 0.02 0

1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 o AP-06/09 Georgetown Substation (Control)

-- AP-07 PSNH Substation, Hampton

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

U I

I FIGURE 3.2 I GROSS-BETA ON AIR PARTICULATE FILTERS QUARTERLY AVERAGES I SEABROOK STATION I 0.08 0.08 I

0.06 0.06 I

U E

.t 0.04 0.04 I CL I 0.02 0.02 I

I 0 4-1994 1996 1998 2000 2002 2004 2006 2008 0

I U -- l- Indicators 0 Control I

I I

Table 3.1-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

I MEDIUM: Air Particulates (AP) UNITS: pCi/cubic meter Control Stations I

Indicator Stations Station With Highest Mean Radionuclides (No. Analyses)

(Non-Routine*)

Required LLD Mean Range (No. Detected**)

Station Mean Range (No. Detected**)

Mean Range (No. Detected**)

I GR-B (216)

(0) 0.01 1.6E -2

( 7.1 - 27.4)E -3 (189/189) 04 1.7E -2 8.1 - 26.7)E -3 (27/27) 1.5E -2 7.0 - 22.0)E -3 (27/ 27)

I Be-7 (32)

(0) 1.1E -1

( 7.3 - 15.1)E -2 (28/28) 05 1.2E -1

( 7.3 - 13.0)E -2 (4/4) 9.7E -2 7.2- 11.8)E -2 (4/4)

I K-40 (32)

(0) 5.1E -4

( -7.5 - 6.8)E -3 (0/28) 03 2.3E -3

(-4.0 - 68.0)E -4 (0/4) 2.OE -3

-9.0 - 37.0)E -4 (0/4)

I Cr-51 (32) -1.4E -4 01 7.5E -3 -5.1E -3 Mn-54 (0)

(32)

( -2.5 - 2.8)E -2 2.3E -5 (0/28) 01

(-5.0 - 26.0)E -3 2.3E -4 (0/4)

-9.2 - -2.3)E -3 1.5E -4 (0/4) I Co-57 (0)

(32)

(-4.5 - 7.5)E -4 1.7E -5 (0/28) 04 0.0 - 4.4)E -4 1.4E -4 (014)

-2.6 - 4.9)E -4 1.8E -5 (0/4)

I (0) (-2.2 - 2.9)E -4 (-7.0 - 28.0)E -5 -1.4 - 2.1)E -4 Co-58 (32)

(0) 1.4E -5

(-1.0 - 0.7)E -3 (0/28) 07 3.6E -4

( 7.0 - 72.0)E -5 (01 4) 2.4E -4

-5.1 - 7.2)E -4 (0/4)

I I

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

Fe-59 (32) 3.9E -4 01 1.5E -3 8.7E -4 (0) (-2.3 - 3.7)E -3 0.0 - 3.5)E -3 -2.7 - 3.3)E -3 (0/28) (0/4) (0/4)

Co-60 (32)

(0)

-7.7E -5

(-6.7 - 4.5)E -4 (0/ 28) 02 1.5E -4

-2.3 - 3.7)E -4 (0/4) 0.OE 0

-2.8 - 1.5)E -4 (0/4)

I Zn-65 (32)

(0)

-5.5E -4

(-3.3 - 1.0)E -3 (0/28) 05 -5.OE -5

-2.9 - 0.9)E -4 (0/4)

-1.9E -4

( -7.2 - 3.3)E -4 (0/4)

I I

Se-75 (32) 1.1E -5 04 2.4E -4 -1.3E -5 (0) (-8.0 - 9.0)E -4 -1.6 - 9.0)E -4 ( -3.3 - 6.3)E -4 (0/28) (0/4) (0/4)

Zr-95 (32) -1.6E -4 02 3.0E -4 -4.9E -4 Ru-103 (0)

(32)

( -2.3 - 1.4)E -3

-8.9E -5 (0/ 28) 04

-4.6 - 9.4)E -4 3.1E -4 (0/4)

( -2.1 - 1.0)E -3

-1.5E -4 (0/4) I

(-1.3 - 0.6)E -3 I

(0) ( -1.5- 1.8)E -3 -6.0 - 10.0)E -4 (0/28) (0/4) (0/4) 1.1 E -3 07 3.1E -3 1.3E -3 Ru-1 06 (32)

(0) ( -3.8 - 12.1)E -3 -3.5- 12.1)E -3 9.0 - 19.0)E (0/28) (0/4) (0/4)

I 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 I

Table 3.1-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Air Particulates (AP) UNITS: pCi/cubic meter 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*)

Ag-1 08m (32) 0.OE 0 05 7.3E -5 6.5E -5 (0) ( -5.3 - 6.1)E -4 ( -4.0 - 17.0)E -5 (-1.8 - 3.1)E -4 (0/28) (0/4) (0/4)

Ag-110m (32) 7.8E -5 05 4.9E -4 -6.8E -5 (0) ( -7.7 - 11.6)E -4 ( 7.0 - 116.0)E -5 (-4.8 - 2.7)E -4 (0/28) (0/4) (0/4)

Sb-124 (32) -3.4E -4 08 5.4E -4 3.OE -4 (0) ( -2.8 - 3.4)E -3 ( -8.0 - 16.0)E -4 (-1.3 - 2.5)E -3 (0/28) (0/4) (0/4)

Sb-125 (32) -I.OE -5 02 5.3E -4 3.5E -4 (0) ( -1.6 - 1.3)E -3 ( -1.2 - 12.9)E -4 ( -1.4 - 8.0)E -4 (0/28) (0/4) (0/ 4) 1-131 (32) -1.2E -2 08 4.6E -2 -1.7E -4 (0) ( -1.3 - 0.9)E -1 ( 6.1 - 91.0)E -3 ( -1.3 - 1.7)E -2 (0/28) (0/4) (0/4)

Cs-1 34 (32) 0.05 -3.7E -5 01 9.5E -5 -9.7E -5 (0) ( -4.0 - 4.1)E -4 ( -1.1 - 4.1)E -4 ( -5.3- 1.5)E -4 (0/28) (0/4) (0/4)

Cs-1 37 (32) 0.06 -8.OE -5 08 1.3E -4 -1.9E -4 (0) ( -5.8 - 3.2)E -4 ( -9.0 - 32.0)E -5 ( -4.1 - 0.4)E -4 (01 28) (0/4) (0/4)

Ba-140 (32) 0.OE 0 03 6.6E -3 2.5E -3 (0) ( -2.5 - 4.4)E -2 ( -2.2 - 25.0)E -3 (-8.0 - 12.0)E -3 (0/28) (0/4) (0/4)

Ce-141 (32) -4.3E -4 02 0.OE 0 -1.2E -4 (0) ( -1.5- 1.3)E -3 ( -9.0 - 13.2)E -4 (-1.2 - 1.3)E -3 (0/ 28) (0/4) (0/4)

Ce-144 (32) 2.4E -4 08 1.2E -3 -2.7E -4 (0) ( -1.2 - 3.0)E -3 ( -9.1 - 30.0)E -4 (-1.8 - 1.2)E -3 (0/28) (0/4) (0/4)

Th-232 (32) 0.OE 0 04 6.7E -4 -2.8E -4 (0) ( -2.2 - 2.3)E -3 ( -3.0 - 23.0)E -4 (-1.6 - 1.7)E -3 (0/28) (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.

3.2 Charcoal Filters Charcoal filter (CF) cartridges are in series behind the air particulate glass-fiber filters at each of the air sampling locations. Monitoring stations were established at a total of eight locations. Seven of these are indicators and one is a control. Charcoal filters from the air sampling stations were collected and analyzed for 1-131 activity to a lower limit of detection (LLD) of 0.07 pCi/m3.

During 2008, a total of 216 charcoal cartridges from eight locations were analyzed. As described for the air particulate samplers (see Section 3.1), the collection cycles for the charcoal filters were biweekly during 2008. At the time of switching from a one week to a two week change-out cycle in 2005, an iodine decay analysis compared a 1-week vs. 2-week air sampling collection times to the sensitivity to detect iodine-1 31. 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 I

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 iodine 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.

i No sample analysis indicated a detectable measurement for 1-131 that was statistically relevant (positive) at the air sampling locations stated in the.ODCM.

3 The REMP program has detected no radio-iodine 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 10CFR50, Appendix I dose criteria for the reporting period. Therefore, no increasing or decreasing trends were observed.

The REMP Summary Table 3.2-1 list the range of analysis results for iodine (1-131) at both Indicator and Control Stations. Attachment 1 to this report lists the individual analysis results for each air sample measurement under I

the Sample Type code CF. i Charcoal filter sample collection and analysis deviations from the ODCM required program are described in Section 5. A total of 8 minor interruptions in the continuous collection were recorded, but no loss of sufficient sample volume or filter elements themselves which would have prevented radiological analysis occurred. 3 Table 3.2-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Charcoal Cartridge (CF) UNITS: pCi/cubic meter 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**)

1-131 (216) 0.07 2.4E -4 04 1.2E -3 2.7E -4 (0) (-1.4 - 1.5)E -2 (-6.9 - 15.4)E -3 (-7.9 - 9.0)E -3 (0/189) (0/27) (0/27)

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 3.3 Milk Milk samples (TM) were collected semi-monthly during the pasture season and monthly at other times. Samples are analyzed for low level 1-131 and gamma-emitting radionuclides.

I The ODCM (Table A.9.1-1) requires that milk samples be collected from three locations within 5 km of the plant m 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 distance 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 2008 Land Use Census, the number of available sample locations required by the ODCM sampling program could not be met (no available milk within 5 km, and only two milk locations between 5 and 8 kin). 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, two site boundary and one control vegetation collection locations are sampled to compensate for the limited milk sampling (see Section 3.12).

I The Land Use Census also identified a milk (goat) location situated 8.1 km, NW, just beyond the ODCM required 8.0 km maximum distance for indicator milk sampling sites. This location (designated TM-24) also has limited number of milking animals and has indicated that it could not provide a reliable source of milk throughout the year. Seven samples were collected over 4 months in 2008 while milk supplies were available. Due to the distance and limited availability of milk, TM-24 does not qualify as an ODCM defined indicator sampling site. I A total of 61 milk samples were collected during the year from available locations. Each sample was analyzed for gamma emitting radionuclides. In addition, all samples were evaluated for low levels of 1-131 through an iodine extraction process. With no exception, the gamma analyses on all samples indicated that only natural occurring potassium-40 was detectable in milk in 2008. On occasions in past years, Cs-1 37 would be detectable in some I

milk samples. For 2008 however, no detectable concentrations of Cs-137 were measured in any milk samples.

In addition, no other terrestrial samples collected in the site area found cesium, nor was any detectable Cs-1 37 reported in plant effluents during the time period of interest. Figure 3.4.1 illustrates the Cs-137 analysis from I

previous years, including periods prior to plant operations. Past detection of Cs-1 37 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 and 3.4.1 illustrate the analysis results (without regard to whether individual analysis indicated detectable or statistically not distinguishable concentrations) for Cs-137 in milk over the current year (2008) and previous years of the Seabrook REMP.

Potassium-40 was detected in all indicator and control location samples. Potassium-40 is a natural occurring nuclide detected in many environmental sample media.

Iodine-1 31 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-I operational and operational phases of the program. No increasing or decreasing trends in the radioactivity content of milk were observed.

Since there was no detected radioactivity in milk that could be identified to be related to plant releases to the environment, there was no plant associated dose impact for members of the public due to the milk ingestion pathway. The postulated maximum organ dose associated with Cs-1 37 in milk from past weapons testing fallout is conservatively estimated to be only 0.80 mrem/year (infant liver) assuming that the entire years' intake was at I

an equivalent Cs-137 concentration equal to the average minimum detectable activity (MDA) level achieved by the laboratory analysis for 18 samples (7.5 pCi/kg for location TM-15) collected for the year. The MDA does not imply that Cs-137 was actually present in the milk samples, only that testing could not detect any positive activity down to that limit of the measurement system.

I The REMP Summary Table 3.3-1 list the range of analysis results by radionuclide for Indicator and Control Stations for the milk. Attachment 1 to this report lists the individual analysis results for each measurement of milk under the Sample Type code TM.

Milk sample collection and analysis deviations (if any) from the ODCM required program are described in Section i 5.

I FIGURE 3.3 CESIUM-137 IN MILK SEABROOK STATION 30 25 20 15 0

10.

5 0

-5

-10 ..... I IcI I Jan Feb Mar ADr Mav Jun Jul Aua S 2008 W*TM-09 Dairy Farm, Hampton NH

-+TM-15 Goat Herd, Hampton Falls NH

-- TM-20 Dairy Farm, Rowley MA (Control)

TM-24 Joy Lane, North Hampton, NH FIGURE 3.3.1 CESIUM-137 IN MILK ANNUAL AVERAGE CONCENTRATIONS 30 50 25 40 20 30 15 20 10 10 5

0 1 .1 . I. . . . ... I, - ,I I . - 0

-- D-TM-04 Dairy Farm, Salisbury MA

-'--TM-08 (prior to 1995 TM-10) Dairy Farm, Hampton Falls NH

-TM-09 Dairy Farm, Hampton NH

--- TM-15 Goat Herd, Hampton Falls NH FIGURE 3.4.1 CESIUM-137 IN MILK ANNUAL AVERAGE CONCENTRATIONS 30 25 20 5% Criticality June, 1989 15 Chernobyl CL May, 1986 Full Power 10 May, 1990 AA 0 I - - I I t'.-

K1"b")

1,4" -ý41"qpI' q l, .qc 14 140 q 1e

-- O-TM-16 Goat Herd, Kensington NH

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

-X-XTM-23 Sunshine Dairy Farm, Newbury, MA

-TM-20 Dairy Farm, Rowley MA (Control)

Table 3.3-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Milk (TM) UNITS: pCi/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**)

Be-? (61) -6.9E 0 20 -3.7E -1 -3.7E -1 (0) (-5.3- 1.5)E 1 (-3.1 - 3.2)E 1 (-3.1 - 3.2)E 1 (0/43) (0/18) (0/18)

K-40 (61) 1.5E 3 24 1.6E 3 1.3E 3 (0) ( 1.2-1.9)E3 1.5-1.9)E3 1.2-1.5)E3 (43/43) (7/7) (18/18)

Cr-51 (61) -4.1 E -1 24 1.2E 1 1.5E 0 (0) (-3.7 - 3.6)E 1 ( 5.0 - 22.0)E 0 (-2.7 - 3.7)E 1 (0/43) (0/7) (0/18)

Mn-54 (61) 2.OE -1 09 3.6E -1 -4.6E -1 (0) (-4.9 - 3.1)E 0 ( -2.1 - 2.4)E 0 (-3.1 - 2.6)E 0 (0/43) (0/18) (0/18)

Co-57 (61) -9.6E -2 15 1.5E -1 -4.5E -1 (0) (-4.3 - 3.0)E 0 ( -3.1 - 3.0)E 0 (-3.7 - 1.6)E 0 (0/43) (0/18) (0/18)

Co-58 (61) -1.2E -1 15 5.9E -1 -7.2E -1 (0) (-5.9 - 4.7)E 0 ( -5.9 - 4.7)E 0 (-4.4 - 1.7)E 0 (0/43) (0/18) (0/18)

Fe-59 (61) -3.9E -1 24 5.3E -1 -2.1 E -1 (0) (-1.2 - 0.7)E 1 ( -5.9 - 3.4)E 0 (-8.2 - 6.9)E 0 (0/43) (0/7) (0/18)

Co-60 (61) 1.4E -1 24 5.3E -1 2.8E -2 (0) ( -3.8 - 5.6)E 0 (-2.5 - 3.8)E 0 (-5.6 - 2.4)E 0 (0/43) (0/7) (0/18)

Zn-65 (61) -2.OE 0 09 -3.9E -1 -2.5E 0 (0) ( -2.2 - 1.4)E 1 (-1.2 - 1.4)E 1 (-1.2- 1.0)E I (0/43) (0/18) (0/18)

Se-75 (61) 7.5E -1 24 9.OE -1 -7.7E -1 (0) (-3.9 - 4.6)E 0 (-2.9 - 3.3)E 0 (-5.6 - 2.0)E 0 (0/43) (0/7) (0/18)

Zr-95 (61) -1.5E -1 15 2.7E -1 -4.2E-1 (0) (-7.5 - 6.7)E 0 (-6.0 - 6.7)E 0 (-8.8 - 5.9)E 0 (0/43) (0/18) (0/18)

Ru-103 (61) -1.1 E 0 20 -6.7E -1 -6.7E -1 (0) (-7.7 - 4.6)E 0 (-4.0 - 1.4)E 0 (-4.0 - 1.4)E 0 (0/43) (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.

Table 3.3-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Milk (TM) UNITS: pCi/kfl 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-1 06 (61) 7.2E -2 2.4E 0 -4.8E 0 (0) ( -4.6 - 4.1)E 1 ( -4.6 - 4.1)E 1 ( -4.0 - 2.1)E 1 (0/43) (0/18) (0/18)

Ag-108m (61) 5.8E -2 2.9E -1 2.6E -1 (0) ( -2.5 - 3.2)E 0 ( -2.0 - 2.4)E 0 ( -3.1 - 2.7)E 0 (0/43) (0/18) (0/18)

Ag-110m (61) 3.7E -2 6.7E -1 1.2E -1 (0) ( -6.4 - 5.6)E 0 ( -1.8 - 2.9)E 0 (-7.3 - 4.3)E 0 (0/43) (0/7) (0/18)

Sb-124 (61) -6.9E -1 I.4E -2 -5.1E -1 (0) (-1.2- 1.1)E 1 ( -5.1 - 5.7)E 0 (-6.0 - 13.9)E 0 (0143) (0/7) (0/18)

Sb-125 (61) -3.5E -1 5.6E -1 5.6E -1 (0) (-9.2 - 8.5)E 0 ( -7.0 - 6.4)E 0 (-7.0 - 6.4)E 0 (0/43) (0/18) (0/18) 1-131 (61) 1 2.4E -2 7.8E -2 6.6E -2 (0) ( -1.9 - 3.8)E -1 (-1.9 - 3.8)E -1 (-4.0 - 5.5)E -1 (0/43) (0/18) (0/18)

Cs-1 34 (61) 15 -2.9E -1 1.4E -1 -2.4E -1 (0) ( -4.8 - 2.3)E 0 ( -2.8 - 2.3)E 0 (-3.4 - 2.8)E 0 (0/43) (0/18) (0/18)

Cs-137 (61) 18 9.2E -1 2.6E 0 1.3E 0 (0) ( -4.2 - 6.9)E 0 ( 1.2 - 5.8)E 0 (-2.5 - 4.6)E 0 (0/43) (01 7) (0/18)

Ba-1 40 (61) 15 9.3E -2 9.3E -1 -6.9E -1 (0) ( -6.1 - 7.6)E 0 ( -3.7 - 5.4)E 0 (-6.8 - 6.9)E 0 (0/43) (0/7) (0/18)

Ce-141 (61) -7.9E -1 4.8E -1 4.8E -1 (0) ( -6.4 - 4.4)E 0 ( -7.4 - 8.1)E 0 (-7.4 - 8.1)E 0 (0/43) (0/18) (0/18)

Ce-144 (61) -1.9E 0 3.1E 0 3.7E -1 (0) ( -2.2 - 2.0)E 1 ( -1.2 - 2.0)E 1 ( -2.1 - 1.5)E 1 (0/43) (0/7) (0/18)

Th-232 (61) 3.3E 0 6.2E 0 1.8E 0 (0) ( -1.4 - 1.9)E 1 ( 1.3- 12.6)E 0 ( -1.4 - 1.9)E 1 (0/43) (0/7) (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 - WS) grab samples are required at two locations (control and indicator) monthly. The indicator (WS-01) is over the vicinity of the plant's submerged discharge structure. The control location (WS-

51) is situated in Ipswich Bay, MA, approximately 16.9 km from the plant. A gamma analysis is performed on each sample. A tritium analysis is performed on the quarterly composite of samples from each location.

I Additional samples were collected from the Seabrook marsh (WS-02) which borders the immediate plant property. These samples are intended to provide indication of any ground water movement across the site area that might carry contamination into the surface waters of the marsh.

For the 2008, 26-gamma analyses were performed on surface water samples. The only radionuclide detected in 2008 was natural 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.

I Therefore, no increasing or decreasing trends were observed.

Quarterly composites from the same gamma collection samples were analyzed for tritium. Ten samples were analyzed in 2008, which included two collections from a non-ODCM required location (WS-02) situated approximately 600 feet SSE from the Containment Building in Seabrook Marsh. The monthly composites and WS-02 samples showed no presence of tritium. All samples met the required LLD (3000 pCi/kg) for tritium in seawater. These results are consistent with pre-operational tritium data.

I 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 in the past. Therefore, no increasing or decreasing trends in dose were observed. This sampling program demonstrates that there is no impact to the public or environment, through this pathway, from plant operations.

The REMP Summary Table 3.4-1 list the range of analysis results by radionuclide for Indicator and Control I Stations for the sea water environmental media. Attachment 1 to this report lists the individual analysis results for each measurement of sea water under the Sample Type code WS.

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 5.

3II

Table 3.4-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Sea Water (WS) UNITS: pCi/kg Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Re =quired Range Range Range (Non-Routine*) LLD (No. Detected*-) (No. Detected**) (No. Detected**)

H-3 (10) 33000 -3.1E 2 02 -1.6E 2 -5.8E 2 (0) (-5.7 - -1.5)E 2 (-1.7 - -1.5)E 2 (-8.5 - -3.1)E 2 (0/6) (0/2) (0/4)

Be-7 (26) -9.7E -1 02 3.OE 0 -4.2E -1 (0) (-3.1 - 1.7)E 1 (-1.0 - 7.0)E 0 (-2.3 - 1.1)E 1 (0/14) (0/2) (0/12)

K-40 (26) 2.7E 2 51 2.9E 2 2.9E 2 (0) ( 1.5-3.6)E2 2.1 - 3.6)E 2 2.1 - 3.6)E 2 (14/14) (12112) (12/12)

Cr-51 (26) -2.4E -1 02 4.7E 0 -1.5E 0 (0) (-2.2 - 2.4)E 1 (-7.7 - 17.0)E 0 (-2.1 - 2.8)E 1 (0/14) (0/2) (0/12)

Mn-54 (26) 15 -5.8E -1 02 -4.5E -1 -5.7E -1 (0) (-3.3 - 1.1)E 0 (-1.0 - 0.1)E 0 (-3.0 - 1.0)E 0 (0114) (0/2) (0/12)

Co-57 (26) 2.9E -2 02 4.8E -1 4.3E -1 (0) (-1.8 - 1.3)E 0 ( 2.9 - 6.7)E -1 ( -2.8 - 14.0)E -1 (0/14) (0/2) (0/12)

Co-58 (26) 15 -6.8E -1 51 1.5E -1 1.5E -1 (0) ( -2.9 - 0.7)E 0 ( -1.8 - 2.4)E 0 ( -1.8 - 2.4)E 0 (0/14) (0/12) (0/12)

Fe-59 (26) 30 -2.6E -1 02 2.3E 0 4.OE -1 (0) ( -9.5 - 3.9)E 0 ( 2.2.- 2.4)E 0 ( -2.9 - 6.3)E 0 (0114) (0/2) (0/12)

Co-60 (26) 15 -2.4E -1 51 6.6E -1 6.6E -1 (0) ( -3.2 - 2.5)E 0 ( -2.0 - 2.3)E 0 ( -2.0 - 2.3)E 0 (0/14) (0/12) (0/12)

Zn-65 (26) 30 6.4E -1 01 1.3E 0 -2.8E 0 (0) ( -1.0 - 1.4)E 1 (-1.0 - 1.4)E 1 ( -2.0 - 0.7)E 1 (0/14) (0/12) (0/12)

Se-75 (26) -2.2E -1 51 3.OE -1 3.OE -1 (0) ( -3.7 - 2.8)E 0 (-4.7 - 4.0)E 0 ( -4.7 - 4.0)E 0 (0/14) (0/12) (0/12)

Zr-95 (26) 15 -9.1 E -1 02 -3.OE -1 -6.3E -1 (0) ( -5.6 - 3.3)E 0 (-9.0 - 3.0)E -1 ( -5.3 - 5.3)E 0 (0114) (0/2) (0/ 12)

Ru-103 (26) -1.5E 0 51 -1.5E 0 -1.5E 0 (0) ( -4.8 - 2.1)E 0 (-3.3 - 1.7)E 0 ( -3.3 - 1.7)E 0 (0/14) (0/12) (0/12)

Ru-1 06 (26) 3.9E 0 01 5.8E 0 -7.5E 0 (0) (-1.9 - 3.2)E 1 (-1.2 - 3.2)E 1 (-4.8 - 1.1)E 1 (0/ 14) (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.

Table 3.4-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Sea Water (WS)

Indicator Stations UNITS: pCi/kq Station With Highest Mean Control Stations I

Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected**) (No. Detected**) (No. Detected**)

Ag-1 08m (26) -2.4E -1 51 7.3E -2 7.3E -2 (0) (-2.1 - 1.8)E 0 -2.3 - 1.7)E 0 (-2.3 - 1.7)E 0 (0/14) (0/12) (0/12)

Ag-11Om (26) -3.4E -1 02 -1.5E -1 -1.3E 0 (0) (-2.8 - 2.4)E 0 (-4.0 - 1.0)E -1 (-4.8 - 1.1)E 0 (0/ 14) (0/2) (0/12)

Sb-124 (26) -3.4E -1 02 1.2E 0 -2.1E 0 (0) (-4.1 - 4.7)E 0 (-3.0 - 26.0)E -1 (-8.7 - 4.7)E 0 (0114) (0/2) (0/12)

Sb-125 (26) -1.9E 0 51 1.4E 0 1.4E 0 (0) (-5.1 - 8.5)E 0 -4.2 - 6.7)E 0 (-4.2 - 6.7)E 0 (0/14) (0/12) (0/12) 1-131 (26) 15 3.2E -1 51 9.6E -1 9.6E -1 (0) -7.0 - 9.3)E 0 (-2.3 - 5.5)E 0 (-2.3 - 5.5)E 0 (0/14) (0/12) (0112)

Cs-1 34 (26) 15 3.2E -1 01 3.9E -1 -1.2E -1 (0) -2.1 - 5.1)E 0 (-1.4 - 5.1)E 0 (-1.8 - 2.3)E 0 (0/14) (0/12) (0112)

Cs-137 (26) 18 -9.9E -2 02 3.OE -1 7.4E -2 (0) ( -2.6 - 1.3)E 0 (-7.0 - 13.0)E -1 (-2.0 - 3.6)E 0 (0/14) (0/2) (0/12)

Ba-140 (26) 15 -2.2E 0 51 -6.7E -2 -6.7E -2 (0) ( -1.1 - 0.2)E 1 (-4.3 - 8.1)E 0 (-4.3 - 8.1)E 0 (0114) (0/12) (0/12)

Ce-1 41 (26) 4.2E -1 01 5.1E -1 -4.6E -1 (0) ( -3.1 - 5.0)E 0 (-3.1 - 5.0)E 0 (-6.6 - 3.1)E 0 (0/14) (0/12) (0/12)

Ce-144 (26) 3.3E 0 01 4.3E 0 1.4E 0 (0) (-1.3- 2.0)E 1 (-1.3 - 2.0)E 1 (-1.7- 1.5)E 1 (0/14) (0/12) (0/12)

Th-232 (26) 3.1E 0 02 4.OE 0 7.OE -1 (0) ( -1.1 - 1.8)E 1 3.8 - 4.2)E 0 (-5.7 - 11.7)E 0 (0/14) (0/2) (0/12)

I I

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 (WG) samples. For the year, quarterly ground water samples were collected when available from three locations. These samples were collected from the drinking water line (WG-01) supplied to the Site (by the Town of Seabrook), from an inactive well (WG-13) located approximately 1 km north of the plant, and a private well 1.3 km NNW (WG-1 4). For 2008, a total of 10 samples were collected. The first and fourth quarter winter period samples from the private well site (WG-14) were not available. All samples were analyzed for gross-beta activity, gamma-emitters and tritium.

Gross beta activity was detected in six of the ten samples due to natural occurring radium and its daughter products. The gross beta activity seen at locations WG-01 and WG-13 are similar to what was seen in the pre-operational program and is consistent with results from previous years of commercial operations. In the third quarter, the statistical count for gross beta for the sample from well WG-14 indicated a low response, about a factor of 6 below the analysis MDC level. This might be seen as an apparent lowering in the trend line on Figure 3.5.1, but is not considered significant. Well WG-14 has a shorter historical trend record (starting in the fourth quarter of 2006) upon which to view periodic variations in gross beta concentrations compared to the other sample wells. Figures 3.5 and 3.5.1 indicate the current year (2008) and the long-term measurement history for gross beta in well waters. No tritium or gamma emitters were detected.

The 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.

The REMP Summary Table 3.5-1 list the range of analysis results by radionuclide for all ground water environmental samples. Attachment 1 to this report lists the individual analysis results for each measurement of ground water under the Sample Type code WG.

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 5.

FIGURE 3.5 GROSS-BETA MEASUREMENTS OF GROUND WATER SEABROOK STATION 20 20 18 - 18 16- 16 14- 14 12- 12 0m 10 - 10 a-CL 8- 8 p

6- 6 4 -4 2 2 0 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2008

---o-WG-01 Seabrook Town Wells

WG-14 Brimmer's Lane I1

-- K- WG-13 Seabrook Station Well No. 13 FIGURE 3.5.1 GROSS-BETA MEASUREMENTS OF GROUND WATER SEMI-ANNUAL AVERAGES SEABROOK STATION 20 20 15 15 0r 10 0-1 5 5 0 I I ........ 0 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

-X- WG-01 Seabrook Town Wells A WG-14 Brimmer's Lane

---1-- WG-13 Seabrook Station Well No. 13 Table 3.5-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Ground Water (WG) UNITS: pCi/liter Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Re quired Range Range Range (Non-Routine*) LLD (No. Detected**) (No. Detected**) (No. Detected*)

GR-B (10) 4 4.OE 0 01 6.3E 0 NO DATA (0) 4.7 - 70.0)E -1 ( 5.8 - 7.0)E 0 (6110) (414)

H-3 (10) 31000 -2.1E 2 01 -1.9E 2 NO DATA (0) (-1.3 - 0.6)E 3 -6.7 - 1.5)E 2 (0/10) (0/4)

Be-7 (10) -3.5E -1 13 6.8E 0 NO DATA (0) (-2.8 - 1.5)E I (-1.0 - 15.0)E 0 (0/10) (0/4)

K-40 (10) -1.2E 0 01 1.1EI NO DATA (0) (-4.3 - 5.9)E 1 -2.8 - 5.9)E 1 (0/10) (0/4)

Cr-51 (10) -5.8E 0 01 -2.5E -1 NO DATA (0) (-5.2 - 1.5)E 1 (-1.5 - 1.5)E 1 (0/10) (0/4)

Mn-54 (10) 15 2.OE -1 13 1.0E 0 NO DATA (0) (-2.2 - 2.3)E 0 -1.6 - 2.3)E 0 (0/10) (014)

Co-57 (10) -5.2E -1 14 -9.OE -2 NO DATA (0) (-1.6 - 0.6)E 0 -4.0 - 2.2)E -1 (0/10) (0/2)

Co-58 (10) 15 -1.6E 0 14 -1.4E 0 NO DATA (0) (-4.3 - 2.0)E 0 -2.1 - -0.6)E 0 (0/10) (0/2)

Fe-59 (10) 30 9.2E -1 01 2.1E 0 NO DATA (0) (-3.6 - 4.2)E 0 0.0 - 4.2)E 0 (0/10) (0/4)

Co-60 (10) 15 -1.OE -1 01 5.OE -2 NO DATA (0) ( -1.6 - 3.3)E 0 -8.0 - 7.0)E -1 (01 10) (0/4)

Zn-65 (10) 30 3.1E 0 01 4.7E 0 NO DATA (0) ( -1.4 - 1.9)E 1 -3.7 - 18.5)E 0 (0/10) (0/4)

Se-75 (10) 1.7E -1 13 1.OE 0 NO DATA (0) ( -2.2 - 3.1)E 0 (-1.6 - 3.1)E 0 (0/10) (0/4)

Zr-95 (10) 15 -5.8E -1 01 5.OE -2 NO DATA (0) ( -4.7 - 3.3)E 0 (-3.6 - 3.3)E 0 (0/10) (0/4)

Ru-103 (10) -8.5E -1 01 -6.8E -1 NO DATA (0) ( -2.3 - 0.3)E 0 (-1.2- -0.1)E 0 (0/10) (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.

Table 3.5-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Ground Water (WG) UNITS: pCi/liter 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-106 (10) -9.1E 0 01 -5.5E 0 NO DATA (0) (-3.5 - 1.1)E 1 (-1.7- 1.1)E 1 (0/10) (0/4)

Ag-108m (10) 5.5E -1 01 9.3E -1 NO DATA (0) ( -2.6 - 2.4)E 0 (-1.9 - 2.4)E 0 (0/10) (0/4)

Ag-110m (10) -8.7E -1 01 7.5E -2 NO DATA (0) (-4.5 - 3.4)E 0 (-2.1 - 1.7)E 0 (0/10) (0/4)

Sb-124 (10) -5.0E -2 01 6.3E -1 NO DATA (0) (-7.0 - 8.9)E 0 ( -7.0 - 8.9)E 0 (0/ 10) (0/4)

Sb-125 (10) 2.8E -1 14 1.7E 0 NO DATA (0) (-6.2 - 2.4)E 0 ( 1.0 - 2.4)E 0 (0/10) (0/2) 1-131 (10) 15 1.7E -1 13 1.OE 0 NO DATA (0) (-4.0 - 4.0)E 0 (-4.0 - 4.0)E 0 (0/10) (0/4)

Cs-134 (10) 15 2.5E -1 13 5.7E -1 NO DATA (0) (-2.1 - 3.2)E 0 (-2.0 - 10.0)E -1 (0/10) (0/4)

Cs-1 37 (10) 18 -6.6E -2 01 1.7E 0 NO DATA (0) (-3.4 - 3.6)E 0 (-3.0 - 36.0)E -1 (0/10) (0/4)

Ba-140 (10) 15 -7.5E -1 14 8.5E -1 NO DATA (0) ( -4.2 - 3.6)E 0 (-1.9 - 3.6)E 0 (0/10) (0/2)

Ce-141 (10) -2.4E 0 01 -1.5E 0 NO DATA (0) ( -7.2 - 3.6)E 0 ( -5.8 - 3.6)E 0 (0/10) (0/4)

Ce-144 (10) 2.4E 0 01 7.9E 0 NO DATA (0) (-1.1 - 2.0)E I ( 1.5- 20.2)E 0 (0/10) (0/4)

Th-232 (10) 3.5E 0 01 4.9E 0 NO DATA (0) (-6.2 - 16.0)E 0 (-5.3 - 16.0)E 0 (0/10) (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.

3.6 Sediment 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 Hampton Beach (SE-07) and Seabrook Beach (SE-08), plus one sub tidal sediment core taken from near the discharge structure (SE-02). The control locations, both beach (SE-57) and sub tidal (SE-52), 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 extends from 10 to 15 centimeters in depth. A gamma analysis was performed on each segment.

The only radionuclides detected in 2008 were natural occurring K-40 and Th-232 with its natural daughters. Potassium-40 was detected in all segments from the core samples collected. Thorium-232 (as measured in the gamma isotopic analysis as AcTh-228) and its daughters were also present in 21 of the 30 core segment samples. 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 impact to the environment from any pathways associated with this media.

The REMP Summary Table 3.6-1 list the range of analysis results by radionuclide for Indicator and Control Stations for the sediment environmental media. Attachment 1 to this report lists the individual analysis results for each segment measurement of sediment under the Sample Type code SE.

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 5.

Table 3.6-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

RAMM111RA 0 A; 6 cc "K11're el.116 ivi W a --- " I I : P A 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 (30) 4.3E I 52 1.5E 2 1.3E 2 (0) (-4.1 - 3.1)E 2 ( 1.0- 25.0)E 1 (-1.4 - 5.1)E 2 (0/18) (0/6) (0/ 12)

K-40 (30) 1.7E 4 08 2.0E 4 1.3E 4 (0) ( 1.2 - 2.2)E 4- ( 1.9- 2.1)E 4 ( 1.2-1.4)E4 (18/18) (6/6) (12/12)

Cr-51 (30) -9.1E 1 52 2.2E 2 3.6E I (0) ( -6.6 - 3.1)E 2 ( -2.0 - 8.2)E 2 (-7.1 - 8.2)E 2 (0/18) (0/6) (0/12)

Mn-54 (30) 4.8E 0 08 9.7E 0 -4.2E -1 (0) ( -1.8 - 2.5)E 1 ( -7.9 - 25.0)E 0 (-1.9 - 2.3)E 1 (0/ 18) (0/6) (0/12)

Co-57 (30) 1.2E 0 08 1.1E 1 -1.2E 0 (0) ( -2.3 - 3.1)E 1 ( 4.0 - 21.0)E 0 ( -8.2 - 3.7)E 1 (0/18) (0/6) (0/12)

Co-58 (30) -8.7E 0 57 2.0E I 7.4E 0 (0) ( -3.4 - 1.6)E 1 (-1.9 - 4.8)E 1 ( -2.4 - 4.8)E 1 (0/18) (0/6) (0/12)

Fe-59 (30) -1.8E 1 52 3.9E I 5.7E 0 (0) ( -1.1 - 0.9)E 2 (-7.6 - 21.7)E 1 ( -8.8 - 21.7)E 1 (0/18) (0/6) (0/12)

Co-60 (30) 1.5E 0 02 7.2E 0 -3.0E 0 (0) ( -5.8 - 4.6)E 1 (-1.2 - 2.3)E 1 ( -2.8 - 3.6)E 1 (0/18) (0/6) (0/12)

Zn-65 (30) -1.8E 1 52 1.0E 2 2.7E 1 (0) ( -1.2 - 1.0)E 2 (-3.0 - 33.0)E 1 (-1.6 - 3.3)E 2 (0/18) (0/6) (0/12)

Se-75 (30) -8.0E 0 08 -5.1E 0 -2.0E 1 (0) ( -4.4 - 2.4)E 1 ( -3.3 - 2.3)E I ( -6.6 - 1.7)E 1 (0/ 18) (0/6) (0/12)

Zr-95 (30) -4.4E 0 52 1.4E 1 -1.4E 1 (0) ( -2.0 - 1.0)E 2 ( -6.2 - 5.9)E 1 ( -8.8 - 5.9)E 1 (0/18) (0/6) (0/12)

Ru-103 (30) 2.6E 0 07 8.7E 0 4.3E 0 (0) ( -6.5 - 6.2)E 1 ( -2.9 - 6.2)E 1 ( -4.4 - 5.9)E 1 (0/18) (0/6) (0/12)

Ru-1 06 (30) 3.2E 1 02 7.0E I -7.2E I (0) ( -2.2- 3.1)E 2 ( -8.0 - 18.0)E 1 (-7.8 - 2.9)E 2 (0/18) (0/6) (0/12)

Ag-1 08m (30) 2.9E 0 52 5.0E 0 2.2E 0 (0) (-2.6 - 3.3)E I ( -1.3 - 3.6)E 1 (-1.6 - 3.6)E 1 (0/18) (0/6) (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.

I Table 3.6-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

I MEDIUM: Sediment (SE)

Indicator Stations UNITS: pCilkq Station With Highest Mean Control Stations I

Radionuclides (No. Analyses)

(Non-Routine*)

Required LLD Mean Range (No. Detected**)

Station Mean Range (No. Detected**)

Mean Range (No. Detected**)

I Ag-110m (30)

(0)

-1.4E 0

( -4.4 - 3.7)E 1 52 1.8E 1

( -1.2 - 4.9)E 1 8.6E 0

(-1.7 - 4.9)E 1 I

(01 18) (016) (0/12)

Sb-124 (30)

(0)

-2.3E 0

( -1.3 - 0.6)E 2 (01 18) 57 2.8E 1

( 5.0 - 52.0)E 0 (0/6) 2.8E 1

(-7.7 - 14.9)E 1 (0/12)

I Sb-125 (30)

(0)

-1.OE 1

( -5.9 - 5.1)E 1 (0/18) 52 4.3E 1

(-8.5 - 20.0)E 1 (01 6) 3.1E 1

(-8.5 - 20.0)E 1 (0/ 12) 1 1-131 (30)

(0)

-1.OE 0

( -1.7 - 1.6)E 2 (01 18) 52 3.2E 1

( -2.4 - 8.5)E 1 (0/6) 2.8E 0

(-1.6 - 0.9)E 2 (0112) I Cs-1 34 (30) 150 -9.1E -1 57 1.4E 1 1.3E 1 Cs-1 37 (0)

(30) 180

( -4.0 - 4.4)E 1 2.3E 0 (0/18) 02

( -1.4 - 4.1)E 1 8.5E 0 (0/6)

(-4.1 - 10.4)E 1

-1.1 E 1 (0/12) I I

(0) ( -2.9 - 8.8)E 1 ( -2.3 - 8.8)E 1 ( -2.6- 1.7)E 1 (0/18) (01 6) (01 12)

Ba-140 (30) -4.4E I 07 1.3E 1 -3.8E 1 (0) ( -6.5 - 7.1)E 2 (-3.2 - 2.0)E 2 ( -3.2- 1.6)E 2 Ce-1 41 (30)

(0) 6.7E -1

( -1.1 - 1.5)E 2 (0/18) 08 9.2E 0

(-1.1 - 1.5)E 2 (0/6)

-2.1E 1

( -1.2 - 0.5)E 2 (0/12)

I (0/18) (0/6) (0/12)

Ce-144 (30)

(0)

-4.1E 1

(-2.1 - 1.6)E 2 52 7.3E 1

(-2.0 - 20.0)E 1 1.8E 0

( -2.7 - 2.0)E 2 1

(0/18) (0/6) (0/12)

Th-232 (30)

(0) 6.8E 2 2.0 - 21.7)E 2 (13/18) 52 1.8E 3 1.1 - 2.8)E 3 (6/6)

I.OE 3

( 1.0 - 28.2)E 2 (8/12)

I I

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

I a

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

I

3.7 Fish Semiannual fish (FH) and invertebrate samples are required from two locations. The Program calls 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, respectively.

During the year, 9-fish samples were collected. The fish species available from Station FH-03 (indicator station) and Station FH-53 (control station) was dominated by Winter and Yellow-Tail Flounder which are bottom dwelling species.

A gamma analysis was performed on the edible portion of each sample collected. In 2008, the only radionuclide detected in fish samples was natural occurring K-40 (all samples). 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.

In addition to the required program for fish as defined in the ODCM, the Station attempted to collect a local fish species (cunner fish) that resides in the upper regions of the water column using an alternate collection method from that used for the more prevalent bottom species. For 2008, one cunner sample (see Attachment 1, sample laboratory number L14420-01, 09/24/2008) was collected from the area of the plant's Hampton Bay discharge (FH-03). No plant radionuclides were detected in the sample, with natural occurring K-40 found at a concentration of 2,690 pCi/kg. Observations for an alternate method of collecting cunner fish from the on-site intake impingement screens indicated that a sufficient volume could not be routinely obtained to satisfy the analysis mass requirements.

The REMP Summary Table 3.7-1 list the range of analysis results by radionuclide for Indicator and Control Stations for all fish environmental media. Attachment 1 to this report lists the individual analysis results for each measurement of fish under the Sample Type code FH.

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 5.

Table 3.7-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Fish (FH) UNITS: pCi/kg Radionuclides (No. Analyses) Required Indicator Stations Mean Range Station Station With Highest Mean Mean Range Control Stations Mean Range I

(No. Detected**) (No. Detected**)

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

Be-7 (9) 4.1E 1 03 4.1E 1 2.4E I (0) ( -1.1 - 1.8)E 2 (-1.1 - 1.8)E 2 ( -8.0 - 10.7)E 1 K-40 (9)

(0) 2.9E 3 2.4 - 3.5)E 3 (0/5) 53 3.3E 3 2.8 - 3.8)E 3 (0/5) 3.3E 3

( 2.8 - 3.8)E 3 (0/4)

U Cr-51 (9)

(0) 4.2E 1

(-1.8 - 1.6)E 2 (5!5) 03 4.2E 1

(-1.8 - 1.6)E 2 (4/4)

-2.4E 1

(-1.1 - 1.1)E 2 (414)

I (0/5) (0/5) (0/4)

Mn-54 (9)

(0) 130 2.7E 0

(-8.4 - 22.0)E 0 (01 5) 03 2.7E 0

(-8.4 - 22.0)E 0 (01 5) 1.2E 0

(-4.0 - 6.0)E 0 (0/4)

I Co-57 (9)

(0) 3.7E 0

-6.1 - 14.4)E 0 (0/5) 53 5.6E 0

-3.2 - 14.7)E 0 (0/4) 5.6E 0

( -3.2 - 14.7)E 0 (014)

I Co-58 (9)

(0) 130 -1.1E 1

-3.2 - 0.6)E 1 (015) 53 3.5E 0

(-9.0 - 24.0)E 0 (0/4) 3.5E 0

( -9.0 - 24.0)E 0 (014) I Fe-59 (9) 260 -2.8E 1 03 -2.8E I -2.9E 1 Co-60 (0)

(9) 130

-7.7 - 3.6)E 1

-3.4E -1 (015) 03

( -7.7 - 3.6)E 1

-3.4E -1 (0/5)

(-4.2 - -1.8)E 1

-2.OE 0 (0/4) I Zn-65 (0)

(9) 260

-9.0 - 6.0)E 0

-3.6E 0 (0/5) 03

( -9.0 - 6.0)E 0

-3.6E 0 (0/5)

(-1.7 - 1.2)E 1

-3.1E I (0/4)

I (0) (-2.9 - 1.8)E 1 ( -2.9 - 1.8)E 1 (-7.9 - -0.8)E 1 Se-75 (9)

(0) 3.2E 0

(-7.9 - 23.0)E 0 (0/5) 53 1.1E 1

(-7.8 - 33.0)E 0 (015) 1.1E 1

(-7.8 - 33.0)E 0 (0/4)

I (0/4)

I (0/5) (0/4)

Zr-95 (9) -3.8E 0 53 -7.5E -1 -7.5E -1 (0) (-2.7 - 3.4)E 1 (-2.1 - 2.1)E 1 (-2.1 - 2.1)E 1 (015) (014) (0/4)

Ru-103 (9)

(0)

-3.6E 0

-2.3 - 1.1)E 1 03 -3.6E 0

(-2.3 - 1.1)E 1

-6.9E 0

(-1.6 - 0.4)E 1 U (0/5) (0/5) (0/4)

Ru-1 06 (9)

(0) 0.OE 0

(-4.0 - 3.6)E 1

. (015) 53 6.3E 0

(-7.0 - 7.0)E 1 (014) 6.3E 0

(-7.0 - 7.0)E 1 (0/4)

I Ag-1 08m (9)

(0) 4.4E 0

(-8.5 - 17.0)E 0 (0/5) 03 4.4E 0

(-8.5 - 17.0)E 0 (0/5) 2.1E 0

(-5.6 - 18.0)E 0 (0/4)

U

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.

Table 3.7-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Fish (FH) UNITS: pCilkq 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**)

Ag-110m (9) -1.1E 1 53 4.8E 0 4.8E 0 (0) ( -2.3 - 0.3)E 1 ( -9.0 - 12.0)E 0 (-9.0 - 12.0)E 0 (015) (0/4) (0/4)

Sb-124 (9) -2.1E 1 53 -1.5E 1 -1.5E 1 (0) ( -4.0 - -0.5)E 1 ( -3.4 - 0.4)E 1 (-3.4 - 0.4)E 1 (0/5) (0/4) (0/4)

Sb-125 (9) -2.2E 0 53 3.3E 1 3.3E 1 (0) (-3.4 - 5.4)E 1 (-6.0 - 64.0)E 0 (-6.0 - 64.0)E 0 (015) (0/4) (014) 1-131 (9) -2.4E 0 53 3.8E 0 3.8E 0 (0) (-4.5 - 2.6)E 1 (-1.3 - 1.2)E 1 (-1.3 - 1.2)E 1 (0/5) (0/4) (014)

Cs-1 34 (9) 130 1.5E 0 03 1.5E 0 -1.7E 0 (0) (-1.2 - 2.0)E 1 (-1.2 - 2.0)E 1 (-1.1 - I.0)E 1

'01/5) (0!5) (0/4)

Cs-137 (9) 150 -2.3E 0 53 9.OE -1 9.OE -1 (0) (-6.9 - 2.9)E 0 (-8.0 - 13.6)E 0 (-8.0 - 13.6)E 0

.0/5) (0/4) (014)

Ba-140 (9) -8.2E 0 53 5.OE 0 5.OE 0 (0) (-4.3- 1.1)E I (-1.7 - 2.2)E 1 (-1.7 - 2.2)E 1 (0/5) (0/4) (0/4)

Ce-1 41 (9) -9.OE 0 53 2.5E -1 2.5E -1 (0) (-2.3 - 2.4)E 1 (-2.3 - 2.2)E 1 (-2.3 - 2.2)E 1 (0/5) (0/4). (0/4)

Ce-144 (9) -4.9E 1 03 -4.9E I -6.3E 1 (0) (-1.2- -0.3)E 2 (-1.2 - -0.3)E 2 (-1.5 - -0.1)E 2 (0/5) (0/5) (0/4)

Th-232 (9) 1.2E 1 53 1.3E 1 1.3E 1 (0) (-2.7 - 4.3)E 1 (-1.0 - 5.1)E 1 (-1.0 - 5.1)E 1 (0/5) (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.

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) which is an important commercial food species from local waters. 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 (HA) were collected from an indicator location near the discharge (HA-04) and from a control location (HA-54) 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 2008 was natural occurring K-40 (all samples). 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 consistentwith previous years of plant operations as well as the pre-operational program.

The REMP Summary Table 3.8-1 list the range of analysis results by radionuclide for Indicator and Control Stations for all lobster samples. Attachment 1 to this report lists the individual analysis results for each measurement of lobsters under the Sample Type code HA.

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 5.

Table 3.8-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: American Lobster (HA) UNITS: pCi/kq 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 (4) 4.5E 0 04 4.5E 0 -5.7E 1 (0) ( -7.2- 8.1)E 1 (-7.2 - 8.1)E 1 (-1.0 -- 0.1)E 2 (0/2) (0/2) (012)

K-40 (4) 1.8E 3 54 2.4E 3 2.4E 3 (0) 1.7 - 1.9)E 3 2.3 - 2.5)E 3 2.3 - 2.5)E 3 (2/2) (2/2) (2/2)

Cr-51 (4) 9.8E 1 54 1.4E 2 I.4E 2 (0) 2.5 - 17.0)E 1 4.3 - 23.0)E 1 4.3 - 23.0)E 1 (0/2) (0!2) (0/2)

Mn-54 (4) 130 1.OE 0 04 1.OE 0 -2.8E 0 (0) (-5.9 - 8.0)E 0 (-5.9 - 8.0)E 0 (-5.0 - -0.5)E 0 (01 2) (012) (01 2)

Co-57 (4) 2.5E 0 54 6.5E 0 6.5E 0 (0) 1.3 - 3.8)E 0 00/2) 6.2 - 6.8)E 0 ( 6.2 - 6.8)E 0 (0/2) (0/2)

Co-58 (4) 130 -5.OE -1 54 3.8E 0 3.8E 0 (0) (-3.0 - 2.0)E 0 3.0 - 4.5)E 0 ( 3.0 - 4.5)E 0 (0!2) (0/ 2) (0/2)

Fe-59 (4) 260 -1.2E 1 54 -1.2E I -1.2E 1 (0) -1.8 - -0.6)E 1 -1.3(- -1.0)E 1 -1.3 - -1.0)E 1 (0/2) (0/2) (012)

Co-60 (4) 130 2.OE 1 04 2.OE 1 -1.6E 1 (0) 1.7 - 2.2)E 1 1.7 - 2.2)E 1 -1.8 - -1.4)E 1 00/2) (0/2) (0/2)

Zn-65 (4) 260 2.6E I 04 2.6E 1 -3.OE I (0) 1.6 - 3.5)E 1 1.6 - 3.5)E I -6.9 - I.0)E I 0/2) (0/2) 1 (0/2)

Se-75 (4) -8.OE -1 04 -8.OE -1 -9.4E 0 (0) (-1.9 - 1.7)E 1 -1.9 - 1.7)E 1 -1.3 - -0.6)E 1 (0/2) (0/2) (0/2)

Zr-95 (4) 1.2E 1 04 1.2E 1 -7.5E 0 (0) ( -3.0 - 26.0)E 0 -3.0 - 26.0)E 0 -2.0 - 0.5)E 1 (0/2) (0/2) (0/2)

Ru-103 (4) 2.OE 0 04 2.OE 0 0.OE 0 (0) ( -4.0 - 8.0)E 0 -4.0 - 8.0)E 0 0.0 - 0.0)E 0 (012) (0/2) (012)

Ru-106 (4) -1.1 E 2 54 8.5E 0 8.5E 0 (0) ( -1.8 - -0.4)E 2 (-1.5- 1.7)E 2 (-1.5 - 1.7)E 2 (0/2) (0/2) (0/2)

Ag-108m (4) 1.1E 1 04 1.1E 1 -7.OE 0 (0) ( -5.8 - 27.0)E 0 (-5.8 - 27.0)E 0 - -0.3)E 10-1.1 (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 fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

I Table 3.8-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH I

(January - December 2008)

MEDIUM: American Lobster (HA) UNITS: pCilkg a Radionuclides (No. Analyses) Required Indicator Stations Mean Range Station Station With Highest Mean Mean Range Control Stations Mean Range (No. Detected**)

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

Ag-110m (4) 1.9E 1 04 1.9E 1 8.OE 0 (0) 1.4 - 2.4)E 1 ( 1.4- 2.4)E 1 4.00- 12.0)E 0 Sb-124 (4) -2.2E 1 (0/2) 04 -2.2E 1 (0/2)

-2.7E I (0/2)

I (0) (-2.2 - -2.1)E 1 (-2.2 - -2.1)E 1 (-3.6 - -1.7)E 1 Sb-125 (4)

(0) 1.5E 0

(-1.1 - 1.4)E 1 (0/ 2) 54 8.OE 0

(-4.0 - 20.0)E 0 (0/2) 8.OE 0

(-4.0 - 20.0)E 0 (0/2)

I 0/2) (0/ 2) (0/2) 1-131 (4)

(0)

-1.2E 1

(-7.1 - 4.7)E 1 54 2.9E I 2.0 - 55.0)E 0 2.9E 1 2.0 - 55.0)E 0 01 2) (0/2) (0/2)

Cs-1 34 (4)

(0) 130 -1.1E 0

(-4.3 - 2.1)E 0 (0/2) 54 5.2E 0 4.8 - 5.5)E 0 (0/ 2) 5.2E 0 4.8 - 5.5)E 0 (0/ 2)

Cs-1 37 (4)

(0) 150 -7.OE 0

(-9.0 - -5.0)E 0 (0/2) 54 6.5E 0 4.0 - 9.0)E 0 (0/2) 6.5E 0

( 4.0 - 9.0)E 0 (0/ 2)

I Ba-140 (4) 9.5E 0 54 I.OE 1 I.OE 1 (0) 0.0-1.9)E1 (0/2)

(-3.0 - 23.0)E 0 1.1E I (0/2)

(-3.0 - 23.0)E 0

-2.OE 0 (0/2) !

Ce-141 (4) 1.1E I 04 (0) 4.0 - 18.0)E 0 4.0 - 18.0)E 0 (-1.4 - 1.0)E 1 Ce-144 3.4E 1 (0/2) 04 3.4E 1 (0/2)

-6.OE 1 (0/2)

I (4)

(0) ( 9.0 - 58.0)E 0 9.0 - 58.0)E 0 (-6.8- -5.1)E 1 Th-232 (4) 5.OE 0

(-7.0 - 17.0)E 0 (0/2) 54 1.5E I

(-1.6 - 4.6)E 1 (0/2) 1.5E 1

(-1.6-4.6)E 1 (0/2)

I (0)

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

I U

I I

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 I

3.9 Shellfish Semiannual fish and invertebrate samples are required by the ODCM from two locations. This section provides the results for shellfish (MU) samples only. Fish and other invertebrate results may be found in the Sections 3.7 and 3.8, entitled Fish and Lobsters, respectively. In 2008, four locations (two indicators and two controls) were included in the sample collections During the year there were two species of mussels (MU) harvested for analysis. Modioli (horse mussels) were collected, by divers, from near the discharge outfall (indicator station MU-06) and from Ipswich Bay (control MU-56). Mytilus (blue mussels) were collected from the intratidal areas of Seabrook Harbor (indicator MU-09) and between Plum Island and Ipswich, MA (control MU-59). A total of eight samples were collected in 2008 and analyzed for radioactivity in the edible portion or meat of the shellfish.

Additional analyses were conducted on the May and shellfish collections from both indictor (MS-06) and control (MS-56) locations where mussel shells (MS) were also analyzed for Strontium 90 (two samples) to see if there is any indication of strontium uptake into the shell. For 2008, no Sr-90 was detected in any sample. These analyses are not required by the REMP as defined in the ODCM.

The only radionuclide detected in shellfish samples in 2008 was natural occurring K-40 (7 out of 8 edible portion samples). 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.

The REMP Summary Table 3.9-1 (mussel bodies) and Table 3.9-2 (mussel shells) list the range of analysis results by radionuclide for Indicator and Control Stations for all shellfish samples. Attachment 1 to this report lists the individual analysis results for each measurement of shellfish under the Sample Type code MU for the edible portions and MS for shells only.

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 5.

Table 3.9-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Mussel Body (MU)

Indicator Stations UNITS: pCi/ka Station With Highest Mean Control Stations I

Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected**) (No, Detected**) (No. Detected")

Be-7 (8) 4.7E 1 06 1.1E 2 -4.7E 1 (0) ( -6.0 - 14.8)E 1 7.3- 14.8)E 1 (-1.3 - 0.3)E 2 (0/4) (0/2) (014)

K-40 (8) I.0E 3 56 1.4E 3 1.3E 3 (0) ( 9.1 - 12.4)E 2 ( 1.3-1.5)E3 9.4- 15.4)E 2 (414) (2/2) (3/4)

Cr-51 (8) -4.3E 1 59 3.OE 1 6.3E 0 (0) (-6.9 - 0.7)E 1 ( 0.0 - 6.0)E 1 (-6.5 - 6.0)E 1 (0/4) (0/2) (0/4)

Mn-54 (8) 130 -4.5E 0 59 1.3E 1 5.8E 0 (0) (-9.0 - 4.9)E 0 6.0 - 19.1)E 0 (-1.9 - 19.1)E 0 (0/4) (0/2) (014)

Co-57 (8) 3.7E 0 59 5.OE 0 2.8E 0 (0) (-6.0 - 75.0)E -1 ( 4.0 - 5.9)E 0 ( 0.0 - 5.9)E 0 (0/4) (0/2) (014)

Co-58 (8) 130 -1.2E 1 56 5.OE 0 -9.1E 0 (0) (-2.1 - 0.3)E 1 (-1.1 - 2.1)E 1 (-3.6 - 2.1)E 1 (014) (0/2) (0/4)

Fe-59 (8) 260 7.8E 0 09 2.2E 1 -5.OE 0 (0) (-1.4- 3.9)E 1 ( 4.0 - 39.0)E 0 (-2.7 - 2.3)E 1 (0/4) (0/2) (0/4)

Co-60 (8) 130 2.OE 0 06 2.7E 0 -6.5E 0 (0) (-2.0 - 5.4)E 0 ( 0.0 - 5.4)E 0 ( -1.5 - -0.1)E 1 (014) (0/2) (0/4)

Zn-65 (8) 260 -3.7E 1 59 1.7E 1 -I.OE 0 (0) (-7.9 - -0.3)E 1 1.2-2.1)E1 (-3.2 - 2.1)E 1 (0/4) (0/2) (0/4)

Se-75 (8) 8.6E 0 09 I.4E 1 9.9E 0 (0) ( -1.5 - 14.4)E 0 1.4-1.4)E1 ( 2.8 - 17.0)E 0 (0/4) (0/2) (0/4)

Zr-95 (8) -1.1E I 56 2.OE 0 -3.5E 0 (0) ( -1.7 -- 0.5)E 1 ( -1.0 - 1.4)E 1 ( -5.4 - 3.6)E 1 (0/4) (0/2) (0/4)

Ru-103 (8) 2.7E 0 06 5.8E 0 -6.OE 0 (0) (-1.8 - 1.7)E 1 ( -2.3 - 14.0)E 0 (-1.8 - 1.5)E 1 (014) (012) (014)

Ru-1 06 (8) -7.5E 0 06 8.1E I -2.4E I (0) (-1.2- 0.9)E 2 ( 7.2 - 9.0)E I (-4.0 - 0.0)E 1 (0/4) (0/2) (014)

Ag-1 08m (8) 4.8E 0 06 6.5E 0 1.7E 0 (0) (-6.9 - 13.0)E 0 ( 3.6 - 9.3)E 0 (-5.7 - 14.0)E 0 (0/4) (0/2) (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.

Table 3.9-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Mussel Body (MU) UNITS: pCi/kcq 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**)

Ag-11Om (8) 2.5E -1 59 8.OE 0 7.8E 0 (0) (-6.0 - 17.0)E 0 ( 2.0 - 14.0)E 0 (1.3- 14.0)E 0 (0/4) (01 2) (014)

Sb-124 (8) -3.OE 1 59 1.2E 1 7.3E 0 (0) (-6.1 - -0.7)E 1 (-2.1 - 4.5)E 1 (-2.1 - 4.5)E 1 (0/4) (0/2) (0/4)

Sb-125 (8) -7.5E -1 06 2.2E 1 -1.3E 0 (0) (-7.2 - 3.9)E 1 5.0 - 39.0)E 0 (-1.7 - 1.9)E 1 (0/4) (012) (0/4) 1-131 (8) 2.OE 1 09 2.5E 1 1.9E I (0) (-2.5 - 7.4)E 1 -2.5 - 7.4)E 1 (-7.0 - 45.0)E 0 (0/4) (0/2) (0/4)

Cs-1 34 (8) 130 -3.8E 0 09 3.5E 0 -3.9E 0 (0) (-1.5 - 1.0)E 1 -2.9 - 10.0)E 0 (-1.2 - 0.3)E 1 (0/4) (0/2) (014)

Cs-1 37 (8) 150 -2.3E 0 06 5.OE 0 -1.6E 0 (0) (-1.1 - 1.3)E 1 -3.0 - 13.0)E 0 (-2.2 - 0.8)E 1 (014) (01 2) (0/4)

Ba-140 (8) 4.3E 0 59 3.7E 1 1.9E 1 (0) (-6.3 - 4.7)E 1 0.0 - 7.3)E 1 (-9.0 - 73.0)E 0 (0/4) (0/2) (0/4)

Ce-141 (8) 1.OE 0 59 7.5E 0 3.OE 0 (0) (-3.1 - 2.3)E 1 1.0 - 14.0)E 0 (-8.0 - 14.0)E 0 (0/4) (0/2) (0/4)

Ce-144 (8) -1.7E 1 56 -5.5E 0 -1.OE I (0) (-4.4 - 0.0)E 1 -3.0 - 1.9)E 1 (-1.2 - 0.9)E 2 (0/4) (0/2) (0/4)

Th-232 (8) 1.1E 1 56 2.8E 1 -5.8E 0 (0) (-1.3 - 3.5)E 1 1.6 - 3.9)E 1 (-9.7 - 3.9)E 1 (014) (01 2) (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.

I Table 3.9-2 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH I

(January - December 2008)

MEDIUM: Mussel Shell (MS) UNITS: pCi/kq I I

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 Sr-90 (2) 300 5.E 1 06 5.1E 1 -8.8E 1 (0)

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

I I

I

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 I

I

3.10 Irish Moss There is no REMP technical requirement defined in the ODCM to collect Irish Moss (algae) samples. As a supplement to the required REMP, semiannual Chondrus (Irish Moss)' samples were collected from an indicator area near plant discharge (AL-05) and a control location (AL-55) 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 routine samples (two indicators and two controls) were collected for the year. An additional "seaweed" sample (see Attachment 1, laboratory sample number L14669-04, dated 10/27/2008) was collected from the station's intake impingement screens ( location code El) to investigate if any plant related radioactive effluents might be re-circulated back into the plant and collected as screen wash waste solids.

A gamma analysis was performed on each sample. Natural occurring Potassium-40 (all samples) and Beryllium-7 (2 of 5 samples) were detected in samples for both indicator and control stations (including the intake impingement seaweed). For the special seaweed sample from the intake impingement screens (El), as well from the off-shore indicator station (AL-05), no plant related radionuclides were detected in any sample.

Two samples from the control location (AL-55) collected in May and December did indicate the presence of low level 1-131 (126 pCi/kg in May and 33.7 pCi/kg in December). The control location is situated approximately 17.4 km from the plant. A review of plant effluent discharge records indicated that no measurable 1-131 was released from the plant in 2008. It is highly unlikely due to the distance from the plant and the lack of any detectable releases of iodine in plant effluents that the 1-131 found in the two control samples could have been from Seabrook Station. Since 1-131 (8 day half-life) is also used in the medical industry for patient treatments, the washout of medical related 1-131 into Ipswich Bay is a likely source.

Therefore, no plant related increasing or decreasing trends were observed. Subsequently, there is no dose 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. However, the observation of 1-131 at the control location is another occurrence of past sample observations from the Ipswich Bay (May, 2006) that have also detected the presence of 1-131 in Chondrus (Irish Moss).

The REMP Summary Table 3.10-1 list the range of analysis results by radionuclide for Indicator and Control Stations for all Irish Moss (or seaweed) samples. Attachment 1 to this report lists the individual analysis results for each measurement of Irish Moss under the Sample Type code AL.

Any sample collection and analysis deviations from the ODCM defined program, or reportable concentrations that may have occurred during the year, are described in Section 5.

Table 3.10-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Irish Moss (AL) UNITS: pCilkg 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 (5) 1.7E 2 El 3.6E 2 1.9E 2 (0) ( 3.5 - 36.0)E 1 ( 1.4-2.5)E2 (0/ 3) (0/1) (2/2)

K-40 (5) 6.7E 3 05 7.7E 3 6.4E 3 (0) ( 4.9 - 8.6)E 3 ( 6.8 - 8.6)E 3 ( 6.2 - 6.5)E 3 (3/ 3) (2/2) (2/2)

Cr-51 (5) 7.1E I El 1.1E 2 1.4E 1 (0) 6.0 - 110.0)E 0 ( 6.6 - 20.4)E 0 (0/3) (0/I) (0/2)

Mn-54 (5) 2.6E 0 El 5.OE 0 4.OE -1 (0) 1.2- 5.0)E 0 3.0 - 5.0)E -1 (0/3) (0/1) (0/2)

Co-57 (5) 5.4E 0 El 1.1E 1 -4.OE -1 (0) (-1.4 - 10.9)E 0 (-1.3 - 0.5)E 0 (0/3) (0/1) (0/2)

Co-58 (5) 4.4E 0 El 1.5E 1 -7.6E -1 (0) (-6.2 - 15.0)E 0 (-9.0 - -6.2)E -1 (0/3) (0/1) (0/2)

Fe-59 (5) -8.OE 0 05 7.OE 0 2.5E 0 (0) (-3.8 - 0.9)E 1 ( 5.0 - 9.0)E 0 ( 0.0 - 5.1)E 0 (0/3) (0/2) (0/2)

Co-60 (5) 1.9E 0 El 1.OE 1 7.OE -1 (0) (-2.8 - 10.0)E 0 (-1.3 - 2.7)E 0 (0/3) (0/I) (0/2)

Zn-65 (5) -4.OE I 55 -1.7E 0 -1.7E 0 (0) (-6.8- -1.7)E 1 (-5.1 - 1.6)E 0 (-5.1 - 1.6)E 0 (0/3) (0/2) (0/2)

Se-75 (5) 3.1E 0 05 7.1E 0 4.8E -1 (0) (-5.0 - 13.6)E 0 6.0 - 136.0)E -1 (-4.4 - 14.0)E -1 (0/ 3) (01 2) (0/2)

Zr-95 (5) 8.2E 0 El 2.5E 1 1.5E 0 (0) (-5.0 - 250.0)E -1 ( 1.0-2.0)E0 (0/3) (0/1) (0/2)

Ru-1 03 (5) 1.2E 1 El 3.4E 1 5.6E -1 (0) 8.0 - 340.0)E -1 ( 2.2 - 9.0)E -1 (0/3) (0/1) (0/2)

Ru-106 (5) -8.3E 0 05 2.OE 0 -1.1E I (0) (-2.9 - 0.7)E 1 (-3.0 - 7.0)E 0 (-1.2 - -1.0)E 1 (0/3) (0/2) (0/2)

Ag-1 08m (5) 2.4E 0 El 1.1E I 1.5E -1 (0) No-6.2 - 10.8)E 0 (-8.5 - 11.6)E -1 (0/3) (0/1) (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.

Table 3.10-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Irish Moss (AL) UNITS: pCi/kq 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**)

Ag-110m (5) -1.5E 0 05 4.3E 0 -1.SE 0 (0) (-1.3 -1.3)E 1 (-4.1 - 12.6)E 0 ( -2.7 - -0.2)E 0 (0/3) (0/2) (0/2)

Sb-124 (5) 1.7E I El 5.3E 1 5.OE -1 (0) (-8.1 - 53.0)E 0 ( 3.0 - 7.0)E -1 (0/3) (0/1) (0/2)

Sb-125 (5) -5.3E 0 55 -1.2E 0 -1.2E 0 (0) (-1.7 - 0.6)E 1 (-2.8 - 0.4)E 0 ( -2.8 - 0.4)E 0 (0/3) (0/2) (0/2) 1-131 (5) -7.1E I 55 2.3E 1 2.3E 1 (0) (-2.1 - 0.1)E 2 ( 1.3 - 3.4)E 1 ( 1.3-3.4)E1 (0/3) (212) (2/2)

Cs-134 (5) 60 1.2E 0 El 7.OE 0 6.5E -1 (0) (-4.9 - 7.0)E 0 ( -3.0 - 16.0)E -1 (0/3) (oi1) (0/2)

Cs-1 37 (5) 80 -4.6E 0 El 2.8E 0 4.5E -1 (0) (-1.3 - 0.3)E 1 (-1.2 - 2.1)E 0 (0/3) (0/1) (0/2)

Ba-140 (5) -2.5E 1 55 1.5E -1 1.5E -1 (0) -7.0 - 0.2)E 1 (-9.0 - 12.0)E -1 (-9.0 - 12.0)E -1 0/3) (0/2) (0/2)

Ce-141 (5) -1.1 E 1 55 -1.6E 0 -1.6E 0 (0) -2.8 - 0.2)E 1 (-2.8 - -0.4)E 0 (-2.8 - -0.4)E 0 0/3) (0/2) (0/2)

Ce-144 (5) -3.5E 1 55 -6.5E 0 -6.5E 0 (0) (-7.9 - 1.1)E 1 (-1.2 - -0. 1)E 1 (-1.2 - -0.1)E 1 0/3) (0/2) (0/2)

Th-232 (5) -2.OE 1 55 9.8E 0 9.8E 0 (0) -7.1 - 2.5)E 1 4.9 - 14.7)E 0 4.9 - 14.7)E 0 (0/3) (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.

3.11 Food Crop There is no requirement for food crop or vegetation samples as long as the required milk locations are available. As noted in Section 3.3, milk sampling at the minimum required number of locations in 2008 was not possible due to the limited inventory of milk animal sites in the plant vicinity. To compensate for U this, vegetation samples were collected as part of the REMP. Section 3.12 describes the alternate broad leafy vegetation (TG) collections.

In addition to the broad leafy vegetation sampling, nine food crop (TF) samples were collected from three locations listed on Table 2.0-2 (two indicator stations, TF-02 and TF-03, one control station, TF-06) during the growing season months (June, July and August). These include strawberries in June (Lab number L14033), green beans in July (Lab number L14169), and tomatoes in August (Lab number L14319). For the year, a total of nine food crop samples were collected and analyzed for gamma emitting radionuclides.

I The only radionuclide detected in 2008 was natural occurring K-40. Potassium 40 was detected in all samples from both indicator and control stations. No plant related radionuclides were detected in any samples. 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 consistent with the pre-operational program and with previous years of plant operations.

The following REMP Summary (Table 3.11-1) list the range of analysis results by radionuclide for Indicator and Control Stations for the Food Crop environmental media. Attachment I to this report lists the individual analysis results for each measurement of Food Crops under the Sample Type code TF.

Any sample collection and analysis deviations from the ODCM defined program, or reportable concentrations that may have occurred during the year, are described in Section 5.

I Table 3.11-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Food Crop (TF) UNITS: DCi/kc 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 (9) -2.3E I 02 2.4E 1 6.OE 0 (0) (-9.5 - 5.3)E 1 ( 0.0 - 5.3)E 1 (-3.8 - 7.0)E 1 (0/6) (0/3) (0/3)

K-40 (9) 1.7E 3 02 1.7E 3 1.7E 3 (0) ( 1.1 - 2.2)E 3 ( 1.5 - 2.0)E 3 1.2-2.2)E3 (6/6) (31 3) (313)

Cr-51 (9) 5.OE 0 03 6.OE I -3.3E -1 (0) (-1.0 - 2.0)E 2 ( -2.0 - 20.0)E 1 (-6.0 - 5.9)E 1 (0/6) (0/3) (0/3)

Mn-54 (9) 1.7E 0 03 5.6E 0 -1.9E 0 (0) (-1.1 - I.0)E 1 ( 2.0 - 10.0)E 0 (-7.0 - 6.0)E 0 (016) (0/3) (0/3)

Co-57 (9) -1.5E -1 02 4.7E 0 -4.8E 0 (0) (-8.5 - 11.3)E 0 0.0 - 1.1)E I (-9.3 - -0.3)E 0 (0/6) (013) (0/3)

Co-58 (9) -3.4E 0 02 6.OE -1 -3.OE 0 (0) (-2.5 - 2.1)E 1 (-1.0 - 2.1)E 1 (-8.0 - 5.0)E 0 (016) (013) (0/3)

Fe-59 (9) -2.1E 1 06 3.3E -1 3.3E -1 (0) (-5.8 - I.0)E i (-1.4 -1.6)E i ( -1.4- 1.5)E i (0/6) (013) (0/3)

Co-60 (9) 1.1E 1 03 1.1E I 8.OE -1 (0) ( 0.0 - 2.9)E 1 ( 0.0 - 2.9)E 1 (-5.6 - 11.0)E 0 (016) (013) (0/3)

Zn-65 (9) -1.6E 1 02 -3.7E 0 -1.9E 1 (0) (-7.1 - 1.1)E 1 (-1.7 - 1.1)E 1 (-8.5 - 5.4)E 1 (0/6) (0/3) (0/3)

Se-75 (9) -1.5E 0 02 4.7E 0 1.OE 0 (0) (-9.0 - 9.0)E 0 ( 0.0 - 9.0)E 0 (-1.9 - 2.1)E 1 (0/6) (013) (0/3)

Zr-95 (9) 1.5E 0 02 1.7E 0 -6.3E 0 (0) (-5.0 - 5.0)E 1 (-5.0 - 5.0)E 1 (-2.8 - 1.6)E 1 (0/6) (0/3) (0/3)

Ru-1 03 (9) 5.OE -1 03 6.7E -1 -6.OE 0 (0) (-2.0 - 2.1)E 1 (-3.0 - 8.0)E 0 (-1.8 - 0.0)E 1 (01 6) (0/3) (0/3)

Ru-106 (9) -2.1E 1 03 1.3E 0 -7.7E 0 (0) (-1.0 - 0.3)E 2 (-2.6 - 3.0)E 1 (-9.0 - 9.0)E 1 (0/6) (0/3) (0/3)

Ag-1 08m (9) 1.2E 0 03 2.9E 0 -1.OE I (0) (-7.6 - 10.6)E 0 (-7.4 - 10.6)E 0 (-2.6 - 0.3)E 1 (01 6) (0/3) (013)

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.

Table 3.11-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Food Crop (TF) UNITS: pCi/kq I

Radionuclides (No. Analyses) Required Indicator Stations Mean Range Station Station With Highest Mean Mean Range Control Stations Mean Range I

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

I LLD Ag-11 Om (9) 1.OE 0 02 3.7E 0 1.OE 0 (0) ( -3.5 - 3.6)E 1 ( 0.0 - 7.0)E 0 ( -4.0 - 4.0)E 0 (0/6) (0/3) (0/3)

Sb-124 (9) -3.3E 0 06 4.3E 0 4.3E 0 (0) ( -6.6 - 3.2)E 1 (-5.7 - 4.5)E 1 ( -5.7 - 4.5)E 1 Sb-125 (9)

(0) 1.7E -1

( -2.3 - 3.7)E 1 (0/6) 03 1.6E 1

(-1.4 - 3.7)E 1 (0/3) 2.OE 0

(-3.1 - 2.6)E 1 (01 3)

I (0/6) (0/3) (0/3) 1-131 (9)

(0) 60 -5.8E 0

( -4.3 - 1.3)E 1 06 0.OE0

(-2.0 - 3.0)E 0 0.OE 0

(-2.0 - 3.0)E 0 U

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

Cs-134 (9)

(0) 60 1.8E 0

(-1.4 - 1.6)E 1 (0/6) 03 6.OE 0

-1.4 - 1.6)E 1 (0/3) 2.6E 0

(-6.6 - 13.3)E 0 (0/3)

I Cs-1 37 (9) 80 2.2E -1 06 9.4E 0 9.4E 0 (0) (-1.0 - 1.1)E 1 7.0 - 11.2)E 0 ( 7.0- 11.2)E 0 (0/6) (0/3) (0/3)

Ba-140 (9) -1.8E 0 02 2.OE 0 0.OE 0 (0) ( -3.3 - 2.3)E 1 -1.2 - 1.8)E 1 (-3.0 - 4.8)E 1 (016) (0/3) (01 3)

Ce-1 41 (9) -3.3E 0 03 -1.7E 0 -6.OE 0 (0) ( -2.0 - 2.6)E 1 -2.0 - 2.6)E 1 (-1.0 - 0.1)E 1 (0/6) (0/3) (0/3)

Ce-144 (9) -1.3E 1 02 4.7E 0 -6.1E I (0) ( -6.9 - 3.0)E 1 -4.4 - 3.0)E 1 (-1.4- -0.2)E 2 Th-232 (9) 3.6E 1 (0/ 6) 02 5.OE 1 (0/3)

-I.7E 1 (0/3)

I (0) ( 8.0 - 95.0)E 0 1.4-9.5)E1 (-6.3 - 0.7)E 1 (0/6) (0/3) (0/3)

I I

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 3.12 Vegetation In lieu of milk sampling, the ODCM, Table A.9.1-1, requires broad leafy vegetation (TG) samples grown in the 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 beyond a 3000-foot radius of the two Containment 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 at high D/Q locations 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 (higher values than determined in the 2008 land use census garden listing) were selected over ranked D/Q gardens in the general population. These two Indicator locations (TG-08 and TG-09) are on site property in areas with available sample media. A third far field control location (TG-10) was selected in Georgetown, MA. Sampling tree leaves as broad leaf vegetation at the selected locations provide increased reliability for sample availability. For 2008, monthly (six month growing season, May through October) broad leaf vegetation samples from the three sites were collected and analyzed by gamma spectroscopy.

The only radionuclides detected in 2008 were natural occurring K-40 and Be-7. Both radionuclides were detected at both indicator and control locations. Potassium-40 was seen in all 18 samples, while Be-7 was detected as positive in 13 of the 18 samples analyzed. No plant related radionuclides were detected in any samples. Utilizing the results of broad leaf vegetation sampling for broad leaf food products, there was no detectable dose impact to the public or on the environment through this food ingestion pathway from plant operations.

The following REMP Summary (Table 3.12-1) list the range of analysis results by radionuclide for Indicator and Control Stations for the vegetation environmental media. Attachment 1 to this report lists the individual analysis results for each measurement of vegetation under the Sample Type code TG.

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 5.

Table 3.12-1 Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Vegetation (TG) UNITS: pCi/kq wet 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 (18) 1.4E 3 09 1.4E 3 1.1E 3 (0) (-5.0 - 526.0)E 1 (-5.0 - 526.0)E I 2.4- 18.5)E 2

. (4/6)

(8/12) (516)

K-40 (18) 3.6E 3 08 3.7E 3 2.8E 3 (0) 2.3 - 5.5)E 3 3.2 - 4.2)E 3 ( 1.8- 3.4)E 3 (12/12) (6/6) (6/6)

Cr-51 (18) -4.7E 1 08 -4.7E 1 -9.8E 1 (0) ( -2.8 - 0.8)E 2 (-2.8 - 0.8)E 2 (-3.3 - 0.5)E 2 (0/12) (0/6) (0/6)

Mn-54 (18) -7.6E 0 10 1.1E I 1.1E I (0) ( -3.8 - 1.3)E 1 (-1.3- 2.6)E 1 (-1.3 - 2.6)E 1 (0/12) (01 6) (0/6)

Co-57 (18) 2.3E 0 09 4.OE 0 -1.7E 0 (0) ( -8.7 - 10.3)E 0 1.2- 6.2)E 0 (-8.2 - 5.6)E 0 (0/12) (0/6) (0/6)

Co-58 (18) -6.3E 0 08 -3.2E 0 -1.7E 1 (0) ( -3.2 - 1.5)E 1 (-1.5 - 1.5)E 1 (-4.5 - 1.5)E 1 (0/12) (0/6) (0/6)

Fe-59 (18) -6.5E 0 09 -6.3E 0 -8.7E 0 (0) ( -4.9 - 2.2)E 1 (-4.9 - 2.1)E 1 (-4.8 - 6.2)E 1 (0/12) (0/6) (0/6)

Co-60 (18) 3.2E 0 09 4.3E 0 -1.2E 0 (0) ( -3.1 - 2.5)E 1 (-4.0 - 11.0)E 0 (-3.7 - 2.0)E 1 (0/12) (016) (0/6)

Zn-65 (18) -2.9E 1 10 1.8E 1 1.8E 1 (0) ( -8.0 - 6.9)E 1 (-8.1 - 9.7)E 1 (-8.1 - 9.7)E 1 (0/12) (0/6) (0/ 6)

Se-75 (18) 3.8E 0 08 8.OE 0 5.OE -1 (0) ( -8.0 - 20.0)E 0 (-4.0 - 20.0)E 0 (-1.2 - 2.6)E 1 (0/12) (0/6) (0/6)

Zr-95 (18) 4.7E 0 10 1.7E 1 1.7E 1 (0) ( -4.8 - 5.4)E 1 (-2.9 - 5.9)E 1 ( -2.9 - 5.9)E 1 (0/12) (0/6) (0/6)

Ru-103 (18) 4.3E 0 08 5.7E 0 -3.5E 0 (0) ( -1.4 - 3.0)E 1 (-1.4- 3.0)E 1 ( -1.5 - 1.5)E 1 (0/12) (0/6) (0/6)

Ru-106 (18) -3.4E 1 09 -3.OE 1 -5.1E 1 (0) (-2.3 - 2.1)E 2 (-1.5 - 2.1)E 2 ( -1.5 - 0.2)E 2 (0/12) (0/6) (0/6)

Ag-1 08m (18) 6.7E -2 10 4.1E 0 4.1E0 (0) (-1.7- 1.6)E 1 (-3.9 - 12.0)E 0 ( -3.9 - 12.0)E 0 (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.

Table 3.12-1 (Continued)

Radiological Environmental Monitoring Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2008)

MEDIUM: Veqetation (TG) UNITS: DCi/ka wet 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**)

Ag-110m (18) -8.1E 0 08 -7.7E 0 -8.7E 0 (0) ( -3.7 - 1.4)E 1 ( -2.9 - 1.4)E 1 (-3.6 - 1.7)E 1 (0/12) (0/6) (0/6)

Sb7124 (18) 8.3E 0 08 2.5E I -4.5E 0 (0) ( -4.3 - 4.6)E 1 ( 0.0 - 4.6)E 1 -4.1 - 2.6)E 1 (0112) (016) (0/6)

Sb-125 (18) 1.6E 1 08 1.8E 1 7.8E 0.

(0) ( -3.3 - 5.4)E 1 (-3.3 - 3.6)E 1 -7.9 - 4.9)E 1 (0/12) (0/6) (0/6) 1-131 (36) 60 -1.9E 0 08 6.7E 0 -5.6E 0 (0) ( -5.5 - 4.9)E 1 ( -1.4 - 4:9)E 1 -9.8 - 1.8)E 1 (0/24) (0/12) (0/12)

Cs-1 34 (18) 60 3.OE 0 09 5.5E 0 1.7E 0 (0) ( -2.6 - 2.8)E 1 (-1.0 - 2.1)E 1 -6.0 - 8.0)E 0 (0112) (0/6) (0/6)

Cs-1 37 (18) 80 8.3E -2 10 9.7E 0 9.7E 0 (0) ( -2.0 - 1.3)E 1 (-1.5 - 5.3)E 1 (-1.5 - 5.3)E 1 (0112) (0/6) (0/6)

Ba-140 (18) 6.9E 0 09 7.7E 0 -2.OE 0 (0) ( -3.8 - 5.5)E 1 (-3.8 - 5.5)E 1 (-2.8 - 2.0)E 1 (0112) (0/6) (0!6)

Ce-141 (18) 1.OE 0 08 1.4E 1 7.OE 0 (0) ( -4.9 - 3.3)E 1 (-8.0 - 33.0)E 0 (-1.3 - 3.1)E 1 (0/12) (016) (0/6)

Ce-144 (18) 2.2E 1 09 3.OE 1 -3.3E 1 (0) ( -4.7 - 8.8)E I (-2.4 - 8.8)E 1 (-6.3 - -0.9)E 1 (0/12) (016) (01 6)

Th-232 (18) 6.1E I 09 6.3E 1 I.4E 1 (0) (-6.6 - 13.8)E 1 (-6.6 - 12.0)E 1 (-3.5 - 8.1)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 by the ODCM. The badges were collected and readout on a I

quarterly schedule.

The exposure rates were normalized to a 91-day quarter. A summary of the 2008 data for the plant operational REMP is shown in Table 3.13-1. Overall, the REMP direct radiation program showed no statistically significant indication of increased direct radiation above the variable background measured exposure rate in unrestricted areas. This is demonstrated by the fact that indicator location results are statistically the same as control locations. The.2008 annual mean of all indicator locations was 16.2 mR/91-day quarter while the mean of all control locations was 17.3 mR/91-day quarter. This verifies that there is no statistical difference in the annual dose as a function of distance from the plant. The fractional difference of the 2008 TLD measurements compared with pre-operational TLD measurements (see Table I 3.13-2 for pre-operational history) also shows that no direct dose beyond the site boundary was attributed to station operation during 2008.

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. 3 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 5. 3 TABLE 3.13-1 Environmental TLD Measurements Net Exposure in mR/Standard Quarter (91 days) 2008 Annual Sta. 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Ave.

No. Description Exp. S.D. SD.D Exp. S.D. Exp.

TL-01 Brimmer's Lane 18.3 + 1.1 21.2 + 1.1 17.9 + 0.8 19.5 + 0.6 19.2 TL-02 Landing Road 14.1 + 0.9 15.1 + 1.0 12.1 + 0.5 14.5 + 1.1 14.0 TL-03 Glade Path 15.1 + 1.2 17.0 + 1.4 13.1 + 0.7 15.2 + 0.7 15.1 TL-04 Island Path 17.2 + 1.1 18.2 + 1.0 14.9 + 0.8 16.6 + 1.1 16.7 TL-05 Harbor Road 12.8 + 1.0 13.8 + 0.9 12.1 + 0.6 15.8# + 0.9 12.9 TL-06 Barge Landing 14.9 + 0.9 15.6 + 1.1 13.0 + 0.6 16.7# + 0.5 14.5 TL-07 Cross Road 13.5 + 0.8 14.0 + 1.1 11.4 + 0.5 (a) + 13.0 TL-08 Farm Lane 16.3 + 1.0 17.7 + 1.2 13.9 + 0.7 15.9 + 0.6 16.0 TL-09 Farm Lane 16.2 + 1.1 18.8 + 1.1 15.2 + 0.7 16.6 + 0.5 16.7 TL-10 Site Boundary 17.1 + 1.0 18.9 + 1.1 17.0 + 0.7 17.8 + 0.7 17.7 TL-ll Site Boundary 14.4 + 0.9 18.8 + 1.3 16.8 + 0.8 18.1 + 0.9 17.0 TL-12 Site Boundary 18.4 + 1.3 19.5 + 1.0 17.2 + 0.8 18.4 + 0.6 18.4 TL-13 Inside Site Boundary 19.3 + 1.1 20.5 + 0.9 18.8 + 0.8 19.1 + 0.8 19.4 TL-14 Trailer Park 15.4 + 0.9 17.6 + 1.0 14.5 + 0.7 15.9 + 0.8 15.9 TL-15 Brimmer's Lane 17.7 + 1.1 21.0 + 1.2 18.1 + 0.9 21.2 + 2.2 19.5 TL-16 Brimmer's Lane 16.2 + 0.9 17.9 + 1.2 15.1 + 0.7 15.9 + 0.5 16.3 TL-17 South Road 14.1 + 1.0 17.4 + 1.4 14.6 + 0.8 15.9 + 1.9 15.5 TL-18 Mill Road 13.9 + 0.9 17.4 + 1.0 14.5 + 0.6 15.2 + 0.6 15.3 TL-19 Appledore Avenue 16.3 + 2.1 17.5 + 1.0 14.1 + 0.7 15.1 + 0.7 15.8 TL-20 Ashworth Avenue 18.2 + 1.0 18.6 + 0.9 16.1 + 0.8 17.9 + 0.7 17.7 TL-21 Route 1A 15.7 + 0.9 16.6 + 1.1 14.8 + 0.7 15.8 + 0.6 15.7 TL-22 Cable Avenue 16.9 + 1.7 18.4 + 1.6 15.0 + 0.7 16.6 + 0.7 16.7 TL-23 Ferry Road 16.5 + 2.0 16.8 + 0.8 14.3 + 0.7 16.0# + 0.8 15.9 TL-24 Ferry Lots Lane 14.9 + 0.9 17.2 + 1.0 13.7 + 0.6 15.4 + 0.6 15.3 TL-25 Elm Street 15.6 + 0.9 16.1 + 0.8 14.7 + 0.7 15.6 + 0.7 15.5 TL-26 Route 107A 14.3 + 0.8 17.0 + 0.9 14.5 + 0.7 15.5 + 0.8 15.3 TL-27 Highland Street 16.2 + 1.0 17.4 + 0.9 14.8 + 0.6 16.1 + 0.5 16.1 TL-28 Route 150 15.6 + 1.1 16.7 + 0.9 15.2 + 0.7 15.4 + 0.6 15.7 TL-29 Frying Pan Lane 15.4 + 1.0 16.1 + 1.1 14.2 + 0.7 15.5 + 0.6 15.3 TL-30 Route 27 13.0 + 0.9 17.2 + 1.2 14.8 + 0.9 15.5 + 0.7 15.1 TL-31 Alumni Drive 13.0 + 1.0 15.4 + 0.9 13.9 + 1.1 14.1 + 0.6 14.1 TL-32 SB Elementary School 17.9 + 1.1 18.9 + 1.0 16.2 + 0.9 18.0 + 0.9 17.8 TL-33 Dock Area 18.3 + 1.3 19.8 + 1.0 16.9 + 0.8 22.4# + 1.5 18.3 TL-34 Bow Street 18.6 + 1.2 20.3 + 1.4 17.6 + 1.0 26.7# + 1.2 18.8 TL-35 Lincoln Ack. School 17.0 + 0.9 18.4 + 1.5 17.0 + 0.7 18.6 + 0.6 17.8 TL-36 Route 97(Control) 15.5 + 0.9 15.8 + 0.9 13.7 + 0.7 24.8# + 2.5 15.0 TL-37 Plaistow, NH (Control) 17.0 + 1.1 18.5 + 1.1 16.9 + 0.7 25.2# + 1.3 17.5 TL-38 Hampstead, NH (Control) 19.1 + 1.1 20.0 + 0.9 19.0 + 0.8 20.1 + 0.7 19.6 TL-39 Fremont, NH (Control) 19.8 + 1.6 22.3 + 1.1 20.9 + 0.9 20.6 + 0.9 20.9 TL-40 Newmarket, NH (Control) 13.7 + 0.8 17.2 + 0.9 15.3 + 0.7 18.0# + 0.5 16.1 I

TABLE 3.13-1 (Continued)

Environmental TLD Measurements I Net Exposure in mR/Standard Quarter (91 days) 2008 3 Annual Sta. lst Quarter 2nd Quarter 3rd Quarter 4th Quarter Ave.

No. Description Exp. S.D. Exp. S.D. Exp. S.D. Exp. S.D. Exp.

TL-41 Portsmouth, NH (Control) 17.0 + 1.0 18.0 + 0.9 15.8 + 0.8 (a) + 16.9 TL-42 Ipswich, MA (Control) 15.4 + 1.1 15.4 + 0.9 13.2 + 0.6 15.7 + 0.9 14.9 TL-43 Rocks Road Landing 13.5 + 0.8 14.3 + 0.9 13.1 + 0.6 13.5 + 0.6 13.6 TL-44 SB Education Center 14.7 + 1.0 15.0 + 0.8 14.5 + 0.7 14.8 + 0.6 14.8 TL-45 Hampton Fire Station 17.2 + 1.0 18.3 + 0.9 16.1 + 0.9 16.8 + 0.5 17.1 TL-46 SB Police Station 18.0 + 1.2 17.7 + 1.0 15.8 + 0.8 16.8 + 0.6 17.1 TL-47 Route 84 15.0 + 0.9 17.9 + 1.0 15.1 + 0.9 15.7 + 0.7 15.9 Mean of Indicators 15.9 17.6 15.1 16.4 16.2 Mean of Controls 16.8 18.2 16.4 18.6 17.3 Notes: I (a) TLD lost (not recovered during field collections).

TLD packages were noted during field collections to contain buildup of condensation / water within the TLD packages likely due to severe ice storm conditions experienced in the region during the quarter. Review of the individual TLD element results for each dosimeter indicates that the apparent exposures are questionably high. !

I Table 3.13-2 Pre-Operational Environmental TLD Measurements Net Exposure in mR/Standard Quarter (91 days)

Annual 1st 2nd 3rd 4th Ave.

Quarter Quarter Quarter Quarter Ep xp_ Exp xExp.

1982 Mean of Indicators -- 17.1 18.1 17.5 17.6 Mean of Controls -- 16.9 18.1 17.9 16.8 1983 Mean of Indicators 16.7 17.1 18.8 17.9 17.6 Mean of Controls 16.9 17.5 18.7 18.4 17.9 1984 Mean of Indicators 16.1 17.1 16.9 17.5 17.0 Mean of Controls 17.6 17.4 15.8 18.7 17.4 1985 Mean of Indicators 16.9 18.0 18.9 16.1 17.4 Mean of Controls 16.8 17.7 18.9 16.1 17.4 1986 Mean of Indicators 14.0 15.5 15.3 15.0 15.0 Mean of Controls 13.9 18.0 16.8 15.1 16.0 1987 Mean of Indicators 12.7 14.8 15.0 14.4 14.2 Mean of Controls 13.0 14.8 15.3 15.0 14.6 1988 Mean of Indicators 13.5 14.1 14.7 14.9 14.3 Mean of Controls 13.3 14.4 18.1 14.6 15.1 1989 Mean of Indicators 14.4 14.3 .... 14.4 Mean of Controls' 14.0 14.4 .... 14.2 All Pre-Operational Mean of Indicators 14.9 16.0 16.8 16.2 15.9 Mean of Controls 15.1 16.4 17.4 16.5 16.2 FIGURE 3.6 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 30.0 tf Q20.0 ........... ...... 20.0 23 CL.

E *e 10.0 10.0 0.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008 TL-01 Brimmer's Lane

-G-- TL-02 Landing Road A TL-03 Glade Path X TL-04 Island Path

-+--TL-05 Harbor Road FIGURE 3.6.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 20i 20 L-a)

E 10 10 0 0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 TL-01 Brimmer's Lane

--

TL-02 Landing Road

TL-03 Glade Path

-- TL-04 Island Path

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

SEABROOK STATION 40 40 30 30

( 20 20 E

10 10 0 -0 Qtr-1 Qtr-2 Qtr-3 Qtr-4 2008

-B-- TL-06 Barge Landing

-B-- TL-07 Cross Road 6 TL-08 Farm Lane

--- TL-09 Farm Lane

-X--TL-10 Site Boundary FIGURE 3.7.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 - 30 20 20 W1=

ca 2

10- 10 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 E3 TL-06 Barge Landing

TL-07 Cross Road

TL-08 Farm Lane

-- 0 TL-09 Farm Lane X TL-10 Site Boundary FIGURE 3.8 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 30.0 20.0 20.0 E

10.0 10.0 0.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008

-- TL-11 Site Boundary TL-12 Site Boundary

- TL-13 Inside Site Boundary TL-14 Trailer Park

-- TL-15 Brimmer's Lane FIGURE 3.8.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 20 20 0t 0

L..

U)

C-w 10- 10 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008

-- 3--TL-1 1 Site Boundary

-- TL-12 Site Boundary 6 TL-13 Inside Site Boundary

-e- TL-14 Trailer Park W TL-1 5 Brimmer's Lane FIGURE 3.9 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 30.0 20.0 20.0 CC E

10.0 10.0 0.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008

--- TL-16 Brimmer's Lane

-e-TL-17 South Road 6 TL-18 Mill Road

-X- TL-1 9 Appledore Avenue

-+-TL-20 Ashworth Avenue FIGURE 3.9.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 20 -- 20 cu W

CL.

E 10- 10 0 ...... 0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008

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

TL-18 Mill Road

-e- TL-1 9 Appledore Avenue

-- x TL-20 Ashworth Avenue FIGURE 3.10 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) I SEABROOK STATION I

40.0 40.0 I

30.0 30.0i (D

O 20.0 20.0 CL II 10.0 10.0 0.0 0.0 I Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008 3 TL-21 Route 1A

-O--TL-22 Cable Avenue

TL-23 Ferry Road

- TL-24 Ferry Lots Lane X TL-25 Elm Street FIGURE 3.10.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 20 20 I.-

a C0 1 E

10 -10 0 -0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 TL-21 Route 1A

--e- TL-22 Cable Avenue A TL-23 Ferry Road

-- TL-24 Ferry Lots Lane

-x--TL-25 Elm Street FIGURE 3.11 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 I

30.0 ~I 30.0 C20.0 20.0 I I

10.0 10.0 I

0.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 0 2008 I

-B- TL-26 Route 107A

-*- TL-27 Highland Street

TL-28 Route 150 e-TL-29 Frying Pan Lane I

-X-TL-30 Route 27 FIGURE 3.11.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 20 20 E 10 10

0. 0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008

-3 TL-26 Route 107A e TL-27 Highland Street

--A- TL-28 Route 150

TL-29 Frying Pan Lane

-- x TL-30 Route 27 FIGURE 3.12 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 I

30.0 30.0 tf

°~II 20.0 20.0 10.0 10.0 I I

0.0 - 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 40I I

2008 TL-31 Alumni Drive

-*-TL-32 SB Elementarty School

TL-33 Dock Area

-- TL-34 Bow Street

- TL-35 Lincoln Ackerman School I

FIGURE 3.12.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 20 20 t:

W CL E

10 10 0 ...... 0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 TL-31 Alumni Drive

-- 9 TL-32 SB Elementary School

- TL-33 Dock Area

-TL-34 Bow Street

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

SEABROOK STATION 40.0 40.0 30.0 30.0 a) 20.0 h;-20.0 E

10.0 10.0 0.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008

-- 3 TL-36 Route 97 (Control)

-eTL-37 Plaistow, NH (Control)

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 30] 30 20 20 a) v cu Of-E 10 - 10 0 -. . .0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 E3 TL-36 Route 97 (Control)

- TL-37 Plaistow, NH (Control)

A TL-38 Hampstead NH (Control) 0 TL-39 Fremont, NH (Control)

-x- TL-40 Newmarket, NH (Control)

FIGURE 3.14 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 30.0 ca O 20.0 20.0 E

10.0 10.0 0.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008

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

-*- TL-42 Ipswich, MA (Control)

-*-TL-43 Rocks Road Landing

--- TL-44 SB Education Center

-*-TL-45 Hampton Fire Station

-- TL-46 SB Beach Police Station

-+--TL-47 Hampton Falls, Route 84 FIGURE 3.14.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 20 - 20 10- 10 0i0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 TL-41 Portsmouth, NH (Control)

- TL-42 Ipswich, MA (Control)

TL-43 Rocks Road Landing

-- TL-44 SB Education Center

TL-45 Hampton Fire Station TL-46 SB Beach Police Station TL-47 Hampton Falls, Route 84 4.0 Dry FuelStorage Environmental Monitoring Program & Summary Data The Dry Fuel Storage (DFS) radiological environmental monitoring program required by.ODCM Control C.9.4.1 provides representative measurements of direct (including scattered) radiation exposure at those locations that have the highest potential for dose to members of the public resulting from dry fuel storage operations. The design of the storage facility is such that there are no liquid or gaseous effluents released to the environment from DFS and, therefore, no associated exposure pathways for liquids and gases requiring the collection and analysis of such sample media. As a result, only direct (including scattered) radiation from the DFS modules need to be monitored for integrated exposures in areas where doses to members of the public need to be limited.

At locations near the DFS where members of the public might be present (off-site areas near the site boundary and on-site special use locations; Science and Nature Center and Fitness Center), TLDs were placed at least 1 year (4 quarterly measurements) prior to used fuel being placed into storage. The DFS received its first load of fuel for storage on July 28, 2008. A total of 6 fuel canisters were placed in the NUHOMS© Horizontal Storage Modules (HSM) on the DFS pad during 2008 with the last one being loaded on September 4, 2008. On September 5, 2008, the final storage configuration for the remainder of the year, including the placement of jersey barriers in front of the HSM bottom vents for additional scatter shielding, was achieved.

The DFS radiological environmental monitoring stations are listed in Table 4.0-1. The measurement locations with respect to the Seabrook site area are shown on Figure 4.0.1.

4.1 Direct Radiation from DFS As with the plant operations TLD program described in Section 3.13, the DFS TLD exposure rates were normalized to a 91-day quarter. A summary of the 2008 data for the DFS REMP is shown in Table 4.1-1.

Figures 4.1, 4.2 and 4.3 show the quarterly 2008 TLD trend lines for the control and indicator monitoring locations. Figures 4.4 and 4.5 provide a comparison of long term trend lines (8 years) for the same control locations, site boundary and special use sites. Overall, the direct radiation program showed no statistically significant indication of increased direct radiation above the variable background measured exposure rate in unrestricted areas. This is demonstrated by the fact that indicator location results are I

statistically the same as control locations. The 2008 annual mean of all indicator locations for the DFS was 17.3 mR/91-day quarter with the mean of all control locations also calculated as 17.3 mR/91-day quarter. There was no statistical difference detected in the annual exposure rates in areas were members of the public could be located (site boundary and special use locations).

The DFS radiation monitoring program in 2008 demonstrated that there was no offsite dose to the members of the public or detectable on-site exposures where members of the public are permitted 3

(Science and Nature Center and Fitness Center) from the operations of the DFS.

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 5 I

' , I"Im

Figure 4.0.1 Dry Fuel Storage TLD Environmental Monitoring Locations

."I -;J "x* -.------------------ ----- -** . . * > '--

IO -

, '.:k ...... i ,"

, . *++...:... .

,+.;+ t..* .+,+. ,*+y..* . . .,,,*. -*.K

. I,- -, :. .". )*. . - <

'..f..: +, ' _++..

't .. , ,.;.

----------------- - C.

-+ , I' +_.

.:, 5" ,+," "( \'" * +"

"LI- * "'* :'"--- ' -Q",¢ "*',"*+,* *+- * : "+

s ) . ++:. "* "" "+" "* I 4 LUM z

q)

I Table 4.0-1 Dry Fuel Storage (DFS) TLD Monitoring Locations 3 TLD Sample Location Distance From Direction From Site Designation Code DsrpinDFS Description Pad (km) DFS PadI TL-44 SB-36 On-site, outside Science & Nature Center(1)

On-site, inside Science & Nature Center 0.21 0.24 ESE SE I

TL-67 On-site, outside near Fitness Center parking (1) 0.05 S SB-35 On-site, inside Fitness Center 0.08 S5 TL-68 Nearby site boundary (dump) to DFS 0.45 W TL-69 Nearby site boundary (Rocks Rd) to DFS 0.47 W TL-10 Site Boundary Fence (2) 0.81 S TL-11 Site Boundary Fence (2) 0.52 SSW TL-12 Site Boundary fence (2) 0.53 WSW TL-13 Inside Site Boundary (2) 0.61 WNW TL-14 Trailer Park, Seabrook (2) 0.94 NW TL-36 Rt 97, Georgetown (Control) (2) 22 SSW TL-37 Plaistow, NH (Control) (2) 21 WSW TL-38 Hampstead, NH (Control) (2) 27 W TL-39 Fremont, NH (Control) (2) 27 WNW TL-40 TL-41 TL-42 Newmarket, NH (Control)

Portsmouth, NH (Control)

Ipswich, MA (Control) (1)(2)

(2)

(1)(2) 22 22 22 NNW NNE SSE 5

(1) This location is not part of the required DFS radiological monitoring program as defined in Table A.9.4-1 of the Seabrook ODCM.

(2) Shared environmental monitoring locations for both Seabrook Station REMP and DFS monitoring. 3 I

I I

I

TABLE 4.1-1 DFS Environmental TLD Measurements Net Exposures in mR/Standard Quarter (91 days) 2008 Annual Sta. 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Ave.

No. Description Exp. SD Exp. SDDExp. E.D SD Exp.

TL-44 Outside Science & Nature C.(1) 14.7 + 1.0 15.0 + 0.8 14.5 + 0.7 14.8 + 0.6 14.8 SB-36 Inside Science & Nature C. 16.3 + 0.7 17.0 + 1.5 15.5 + 0.4 15.7 + 0.7 16.1 TL-67 Outside Fitness Center (1) 18.5 + 0.9 18.9 + 0.8 19.9 + 0.9 22.7 + 1.1 20.0 SB-35 Inside Fitness Center 15.5 + 0.9 16.7 + 1.3 17.3 + 0.6 16.4 + 0.7 16.5 TL-68 Nearby Site Boundary to DFS 17.0 + 1.3 17.3 + 1.0 16.3 + 0.7 16.4 + 0.6 16.8 TL-69 Nearby Site Boundary to DFS 18.3 + 1.5 17.8 + 0.9 17.2 + 0.7 17.1 + 0.7 17.6 TL-10 Site Boundary Fence (2) 17.1 + 1.0 18.9 + 1.1 17.0 + 0.7 17.8 + 0.7 17.7 TL-1l Site Boundary Fence (2) 14.4 + 0.9 18.8 + 1.3 16.8 + 0.8 18.1 + 0.9 17.0 TL-12 Site Boundary Fence (2) 18.4 + 1.3 19.5 + 1.0 17.2 + 0.8 18.4 + 0.6 18.4 TL-13 Inside Site Boundary (2) 19.3 + 1.1 20.5 + 0.9 18.8 + 0.8 19.1 + 0.8 19.4 TL-14 Trailer Park Seabrook (2) 15.4 + 0.9 17.6 + 1.0 14.5 + 0.7 15.9 + 0.8 15.9 TL-36 Rt 97, Georgetown (control) (2) 15.5 + 0.9 15.8 + 0.9 13.7 + 0.7 24.8# + 2.5 15.0 TL-37 Plaistow, NH (Control)(2) 17.0 + 1.1 18.5 + 1.1 16.9 + 0.7 25.2# + 1.3 17.5 TL-38 Hampstead, NH (Control) (2) 19.1 + 1.1 20.0 + 0.9 19.0 + 0.8 20.1 + 0.7 19.6 TL-39 Fremont, NH (Control) (2) 19.8 + 1.6 22.3 + 1.1 20.9 + 0.9 20.6 + 0.9 20.9 TL-40 Newmarket, NH (Control)(2) 13.7 + 0.8 17.2 + 0.9 15.3 + 0.7 18.0# + 0.5 16.1 TL-41 Portsmouth, NH (Control) (1) (2) 17.0 + 1.0 18.0 + 0.9 15.8 + 0.8 (a) + 16.9 TL-42 Ipswich, MA (Control) (1) (2) 15.4 + 1.1 15.4 + 0.9 13.2 + 0.6 15.7 + 0.9 14.9 Mean of Indicators 16.8 18.0 16.8 17.5 17.3 Mean of Controls 16.8 18.2 16.4 18.6 17.3 (1) This location is not part of the DFS required program required by the ODCM.

(2) Shared environmental monitoring locations for both plant REMP and DFS monitoring.

(a) TLD lost (not recovered during field collections).

TLD packages were noted during field collections to contain buildup of condensation / water within the TLD packages likely due to severe ice storm conditions experienced in the region during the quarter. Review of individual TLD element results for each dosimeter indicates that the apparent exposures are questionably high.

FIGURE 4.1 DFS CONTROL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 30.0

~1:

0 20.0 20.0 U E

10.0 10.0 0.0 _0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008

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

--

TL-42 Ipswich, MA (Control)

I

TL-36 Route 97 (Control)

--- TL-37 Plaistow, NH (Control)

-- TL-38 Hampstead NH (Control)

--- TL-39 Fremont, NH (Control) I

- Control Average 7 stations TL-40 Newmarket, NH (Control)

FIGURE 4.2 DFS ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 30 20 E

10 0

Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008

- - TL-10 Site Boundary Fence

- TL-1 1 Site Boundary Fence

-*-- -TL-12 Site Boundary Fence

TL-13 Inside Site Boundary

TL-14 Trailer Park

- e - Control Average 7 stations FIGURE 4.3 DFS ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 30.0 CU 20.0 10.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2008

-a--TL-44 Outside Science & Nature Center

SB-36 Inside Science & Nature Center

- TL-67 Outside Fitness Center

SB-35 Inside Fitness Center

--- TL-68 near Site Boundary to DFS

TL-69 Near Site Boundary to DFS

- -o- - Control Average 7 stations FIGURE 4.4 DFS CONTROL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 30 30 First EXS loading 20 20 E

10 10 2000 2001 2002 2003 2004 2005 2006 2007 2008 2008

TL-41 Portsmouth, NH (Control)

-G---TL-42 Ipswich, MA (Control) a TL-36 Route 97 (Control)

TL-37 Plaistow, NH (Control)

.---- TL-38 Hampstead NH (Control)

-. TL-39 Fremont, NH (Control)

--- o--- Control Average 7 stations

--+--TL-40 Newmarket, NH (Control)

FIGURE 4.5 DFS RADIATION MEASUREMENTS TRENDS (USING TLDs)

SEABROOK STATION 30- 30 30 First DFS loading 20 -- 20 cu E

10- 10 2000 2001 2002 2003 2004 2005 2006 2007 2008 2008

-- TL-10 Site Boundary Fence

.--- TL-11 Site Boundary Fence

---* fTL-12 Site Boundary Fence

-~---o-TL-13 Inside Site Boundary

-x-- TL-14 Trailer Park

TL-39 Fremont, NH (Control) o-.---- Control Average 7 stations

-~---TL-40 Newmarket, NH (Control)

FIGURE 4.6 DFS RADIATION MEASUREMENTS TRENDS (USING TLDs)

SEABROOK STATION 30 30 First DFS loading 220 ca ,'!,, X:

a)

E 10 10 2000 2001 2002 2003 2004 2005 2006 2007 2008 2008

.--- TL-44 Outside Science & Nature Center

SB-36 Inside Science & Nature Center A TL-67 Outside Fitness Center

- -SB-35 Inside Fitness Center

-x----TL-68 near Site Boundary to DFS

-.-- TL-69 Near Site Boundary to DFS

--- e--- Control Average 7 stations

- -)K- TL-40 Newmarket, NH (Control)

TL-39 Fremont, NH (Control)

I 5.0 5.1 Program Deviations and Reporting Sampling Program Deviations I

Table A.9.1-1 of the Offsite Dose Calculation Manual (ODCM) allows for deviations in the REMP sampling schedule "ifspecimens are unobtainable due to circumstances such as hazardous conditions, seasonal I

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 2008 are as follows:

U

" On 8/23/2008, power to air sampling station AP/CF-05 [Winnacunnet High School] was disconnected for unrelated maintenance activities at the school for approximately 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months , 40 minutes, thereby failing to "continuously" collect a sample. Power was restored to the air sampler U

when maintenance activity was completed and the power restored to the unit. The out of service time of 2 days out of a 14 day cycle did not impact the ability to collect sufficient sample volume for analysis.

I

On 11/20/2008, power to air sampling station AP/CF-05 [Winnacunnet High School] was disconnected for repair activities to the associated electric conduit that provides power to the unit.

The outage duration was 1.2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months in from 9:18 AM to 10:32 AM, thereby failing to "continuously" I

collect a sample. Power was restored to the air sampler when maintenance activity was completed and the power restored to the unit. The out of service time was minimal compared to the 14 day sample collection cycle and did not impact the ability to collect sufficient sample I

volume for analysis.

On 12/12/2008, a severe regional ice storm caused wide spread power outages, including the loss of power to six of the REMP air sampling stations. The following down times were recorded:

I Air Sampling Station Power Outage Period Outage Duration (h rs)

I AP/CF-01 (Barge Landing)

Off: 12/12/08 12:40 AM On: 12/12/08 7:49 PM U

AP/CF-02 (Harbor Road)

Off: 12/12/08 12:05 AM On: 12/12/08 7:49 PM I AP/CF-03 (Rock Pile) Off:" 12/12/08 12:40 AM On: 12/13/08 11:01 AM I AP/CF-04 (Plate Yard) Off: 12/12/08 12:40 AM On: 12/13/08 11:01 AM I AP/CF-05 Off: 12/12/08 12:05Am 19.73 (Winnacunnet HS)

AP/CF-08 On: 12/12/08 7:49 PM AP/CF-08Off: 12/12/08 12:23 AM I

(Exeter/Hampton Substation)

On: 12/12/08 7:49 PM On: 12/12/08_7:49_PM 19.43 I

Power was restoredto the air samplers as the regional electric service was restored. The service time loss from the "continuously" collect sample requirement was less than 1-1/2 days out of 14 for the collection cycle which did not impact the ability to collect sufficient sample volume for I

analysis.

U I

During the change of the 4 th quarter, 2008, environmental TLDs (January 5 & 6, 2009), the TLD devices for locations TL-41 and TL-07 were missing from their mounting poles (loss of exposure data for the period). In addition, the TLD packages for locations TL-05, TL-06, TL-23, TL-33, TL-34, TL-36, TL-37 and TL-40 were found to contain water, probably as the result of one of the winter snow or ice storms. The TLD data for the 4th Quarter from these locations is in question due to the potential influences that moisture can have on the over-response of the measurement device.

5.2 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 5.2-1 of this report.) Occasionally an LLD is not 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 AREVA NP Environmental Laboratory (E-LAB), the target LLD for any analysis is typically 30-40 percent of the most restrictive required LLD. Expressed differently, the typical sensitivities achieved for each analysis are at least 2.5 to 3 times better than that required by the Seabrook 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 2008, 1430 analyses had an LLD requirement listed in Table 5.2-1, and in every case the LLD requirements were met.

5.3 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 5.3-1 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 2008, no Reporting Levels were exceeded.

Table 5.2-1 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 15 1-131 15 0.07 1 6 0b Cs-1 34 15 0.05 130 15 60 150 Cs-1 37 18 0.06 150 18 80 180 Ba-La-140 15 15

a. Reference Seabrook Station ODCM, Table A.9.1-2 for clarifications.

b. Broad leaf vegetation only.

M M I M o I , i, I- -M # M M im- so m M

m - m - m m mn-mim - m m Table 5.3-1 REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS INENVIRONMENTAL SAMPLESa 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 1,00b Cs-1 34 30 10 1,000 60 1,000 Cs-1 37 50 20 2,000 70 2,000 Ba-La-140 200 300

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

b. Broad leaf vegetation only.

6.0 QUALITY ASSURANCE PROGRAM The quality assurance program at the AREVA NP Environmental Laboratory (E-LAB) 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 U

characteristics of the measurement equipment and processes, relative to established requirements.

The E-LAB employs a comprehensive quality assurance program designed to monitor the quality of analytical I 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, 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 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 the E-LAB on or before December 31, 2008. 1 6.1 Intralaboratory Quality Control Program The E-LAB 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. Additionally, numerous samples of various matrices are periodically re-analyzed as part of the U

internal duplicate analysis program. Table 5.1 provides the summary of the process check and duplicate results for January to December 2008. Of the 751 analyses evaluated for bias, 98.7% passed the acceptance criteria and 98.6% of the 416 results evaluated for precision were acceptable. TheE-LAB internal acceptance criteria are summarized at the end of Table 6.1-1.

l 6.2 Third Party Cross Check Program The E-LAB participates in a third party cross check program managed by Analytics Inc. to satisfy the requirement of the Environmental Technical Specification/ODCM. The E-LAB Analytics program was 3

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 4t" quarter 2007 through the 3rd quarter 2008 are summarized in Table 6.2-

1. The 4 th quarter 2008 sample results are not included in this report as the final results were not received -

from the reporting laboratory in the timeframe covered by this report. This data will be provided in the Quality Assurance Program summary for the subsequent year. Each sample is normally analyzed in triplicate and the results are evaluated against the internal acceptance criteria described in the E-LAB Manual 100-I 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 E-LAB internal acceptance criteria are summarized at the end. of Table 6.1-1.

I

6.3 Blind Duplicate Program Under the Blind Duplicate Quality Assurance Program, samples are split from homogeneous environmental media by the client and sent to the E-LAB 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 12 paired samples in 2008. The measurements evaluated include twenty-six gamma emitting radionuclides and H-3. 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 6.3-1. For the 2008 program, 100%

(212/212) of the measurements met the E-LAB internal acceptance criteria.

6.4 Environmental TLD Quality Assurance Program Performance documentation of the routine processing of the Panasonic environmental TLDs (thermoluminescent dosimeter) program at the E-LAB is provided by the dosimetry quality assurance testing program. This program includes independent third party performance testing by the Pacific Northwest National Laboratory (typically semi-annually) 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 processing 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 and representing between 5-10% of the TLDs processed, are not presented in this report.

Ninety internal performance tests were conducted in 2008 by the E-LAB. These tests were made on fifteen separate sets of six dosimeters. All of the fifteen TLD test sets passed the mean bias criteria of +/-20.1%. Of the ninety individual measurements, 100% of the dosimeter evaluations met the E-LAB Internal Acceptance Criteria for bias (+/-20.1%) and precision (+/-12.8%).

Third party irradiations were performed by the Pacific Northwest National Laboratory. The third party dosimeters were analyzed along with second and fourth quarter client dosimeters. Both sets of six dosimeters passed the mean bias criteria of +/-20.1%. All twelve dosimeter evaluations met the E-LAB individual acceptance criteria for bias (+/-20.1%) and precision (+/-12.8%).

Percentage of Individual Analyses that passed E-LAB Internal Criteria Dosimeter Type Number % Passed Bias Criteria % Passed Precision Criteria Tested Panasonic Environmental 90 100 100 Summary of Third Party Testing Dosimeter Type Panasonic Environmental

] Exposure Period FH 2008 ANSI Category % (Bias +/- SD)*

II 2.7 +/- 1.0 SH 2008 II -1.1 +/- 1.4

Performance criteria are the same as the internal criteria.

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

Category II,High energy photons (Cs-137 or Co-60).

I TABLE 6.1-1 I E-LAB RESULTS IN THE INTRALABORATORY PROCESS CONTROL PROGRAM Media January - December 2008 Bias Criteia (1) Precs id Criteri.a (2) I Analysis I. Air Charcoal 1 2 3 4 3

1 0 0 2 3 0

4 0

I Gamma-Quantitative 97 46 10 Gamma-Screening II. Air Filter 0 0 0 0 0 0 0 0 U

Beta 263 12 0 0 0 0 0 0 Ill. Milk Gamma 3 0 0 0 2 0 0 0 I

1-131(LL) 2 0 0 0 2 0 0 0 IV. Soil/Sediment Gamma 11 1 0 0 16 0 6 0 I

V. Vegetation/Food Gamma 1-131(LL) 0 2

12 1

3 0

0 0

19 0

6 0

5 0

0 0

I VI. Water Gross Alpha Gross Beta 4

15 6

9 6

0 2

0 13 22 2

5 6

2 0

4 I

Gamma 103 66 28 4 116 43 69 0 1-131(LL)

Sr-90 Tritium 0

0 21 0

0 15 0

0 5

1 0

0 0

0 44 0

0 5

0 0

27 0

0 2

I Total Number in Range Percentage of Total 521 69.4 168 22.4 52 6.9 10 1.3 234 56.3 61 14.7 115 27.6 6

1.4 I

Processed Sum of Analyses 751 416 I

(1) Percent Bias Criteria by Bias Category (2) Percent Precision Criteria by Precision Category Bias Category = 1 > 0% and < = 5%

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

Bias Category = 3 > 10% and < = 15%, or Precision Category = 1 > 0% and < = 5%

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

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

Within 2 sigma of known within 2 sigma of mean Gross alpha/beta water, Sr 89/90 > 10% and < = 255%

Transuranics > 10% and < = 20%

Bias Category = 4 Outside Criteria Precision Category = 4 Outside Criteria I

I I

I

TABLE 6.2-1 E-LAB RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2007 - Quarter 3, 2008 S~ample Q~darterl. Sample ~ Repqrtbd Known E-LABI Number Me-u NYear lide Value Value* _,'- Q-Analyti.cs......

E5527-162 4thf2007 Water H-3 9000 9020 1.00 Agreement E5528-162 4th,2007 Water Sr-89 87.1 94.9 0.92 Agreement E5528-162 4thf2007 Water Sr-90 14.4 15.4 0.93 Agreement E5529-162 4thf2007 Charcoal 1-131 69.8 73.4 0.95 Agreement E5530-162 4thf2007 Filter Gross Alpha 103 120 0.86 Agreement E5530-162 4th/2007 Filter Gross Beta 166 152 1.09 Agreement E5531-162 4th/2007 Filter Ce-141 84.1 98.4 0.85 Agreement E5531-162 4thf2007 Filter Cr-51 312 358 0.87 Agreement E5531-162 4tht2007 Filter Cs-134 82.3 96.1 0.86 Agreement E5531-162 4th/2007 Filter Cs-137 109 116 0.94 Agreement E5531-162 4thf2007 Filter Co-58 108 122 0.88 Agreement E5531-162 4th/2007 Filter Mn-54 117 133 0.88 Agreement E5531-162 4th/2007 Filter Fe-59 86.6 104 0.83 Non-Agreement (1)

E5531-162 4th/2007 Filter Zn-65 135 164 0.83 Non-Agreement (1)

E5531-162 4th/2007 Filter Co-60 123 148 0.83 Non-Agreement (1)

E5532-162 4thf2007 Filter Sr-89 45.9 102 0.45 Non-Agreement (2)

E5532-162 4thf2007 Filter Sr-90 7.2 16.5 0.44 Non-Agreement (2)

E5533-162 4th)2007 Milk 1-131LL 59.2 60.8 0.97 Agreement E5533-162 4th)2007 Milk 1-131 58.5 60.8 0.96 Agreement E5533-162 4th)2007 Milk Ce-141 136 141 0.97 Agreement E5533-162 4th)2007 Milk Cr-51 517 512 1.01 Agreement E5533-162 4th/2007 Milk Cs-134 137 137 1.00 Agreement E5533-162 4thf2007 Milk Cs-137 166 166 1.00 Agreement E5533-162 4thf2007 Milk Co-58 167 174 0.96 Agreement E5533-162 4thf2007 Milk Mn-54 201 190 1.06 Agreement E5533-162 4th/2007 Milk Fe-59 155 148 1.05 Agreement E5533-162 4thf2007 Milk Zn-65 223 234 0.95 Agreement E5533-162 4th12007 Milk Co-60 205 211 0.97 Agreement (1) CR 08-11 was issued to address these analyses (2) CR 08-10 was issued to address these analyses

pCi/Liter (Filters in pCi)

I TABLE 6.2-1 (cont'd)

E-LAB RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2007 - Quarter 3, 2008 I

Sample Quartert1. Samp ler Reported Known, Ratio.

E-LAB,'

I I

Number Year':', Mbdia. 1Nuclide Value* Value* ý.Ahalytics Evaluation E5837-162 1st/2008 Water Gross Alpha 97.2 104 0.93 Agreement E5837-162 lst/2008 Water Gross Beta 211 209 1.01 Agreement E5838-162 1st/2008 Water 1-131 LL 66.8 70.4 0.95 Agreement E5838-162 E5838-162 Ist/2008 1st/2008 Water Water 1-131 Ce- 141 65.6 187 70.4 198 0.93 0.94 Agreement Agreement I E5838-162 1 st/2008 Water Cr-51 272 286 0.95 Agreement E5838-162 E5838-162 E5838-162 1 st/2008 1 st/2 008 1 st/2008 Water Water Water Cs-1 34 Cs-137 Co-58 96.2 109 55.8 99.7 116 56.4 0.96 0.94 0.99 Agreement Agreement Agreement I

E5838-162 E5838-162 E5838-162 lst/2008 lst/2008 1 st/2008 Water Water Water Mn-54 Fe-59 Zn-65 75.7 81.6 106 75 81.4 109 1.01 1.00 0.97 Agreement Agreement Agreement I

E5838-162 1 st/2008 Water Co-60 184 188 0.98 Agreement E5839-162 E5839-162 E5840-162 lst/2008 1st/2008 1st/2008 Water Water Water Sr-89 Sr-90 H-3 89.7 11.6 3280 94.1 12.7 4010 0.95 0.91 0.82 Agreement Agreement Non-Agreement (3)

U E5841-162 E5842-162 E5842-162 1st/2008 1st/2008 1st/2008 Charcoal Filter Filter 1-131 Gross Alpha Gross Beta 59.7 79.5 209 60.0 99.5 200 1.00 0.80

1.05 Agreement Non-Agreement (4)

Agreement 1

E5843-162 E5843-162 E5843-162 1st/2008 1st/2008 lst/2008 Milk Milk Milk 1-131LL 1-131 Ce-141 60.0 54.8 241 60.0 60.0 249 1.00 0.91 0.97 Agreement Agreement Agreement I

E5843-162 lst/2008 Milk Cr-51 360 359 1.00 Agreement E5843-162 E5843-162 lst/2008 lst/2008 Milk Milk Cs-134 Cs-137 122 147 125 146 0.97 1.01 Agreement Agreement I E5843-162 lst/2008 Milk Co-58 69.5 70.8 0.98 Agreement E5843-162 E5843-162 E5843-162 lst/2008 1st/2008 Ist/2008 Milk Milk Milk Mn-54 Fe-59 Zn-65 98.3 107 129 94.2 102 137 1.04 1.05 0.94 Agreement Agreement Agreement I

E5843-162 E5844-162 E5844-162 lst/2008 1st/2008 lst/2008 Milk Milk Milk Co-60 Sr-89 Sr-90 237 87.9 10.6 236 95.8 12.9 1.00 0.92 0.82 Agreement Agreement Agreement 1

(3) CR 08-19 was issued to address the H-3 analyses.

(4) The gross alpha analyses are being addressed by CR 08-01.

I

pCi/Liter (Filters in pCi)

I U

-100-I

TABLE 6.2-1 (cont'd)

E-LAB RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2007 - Quarter 3, 2008

'3/4Ratio" ample Quarter/ r S l Reported Known -LA iNu'ber Y.ear-, Media>

M Nuclide Value* Value* Analytics aluation..

E5900-162 2nd/2008 Water Gross Alpha 184 194 0.95 Agreement E5900-162 2nd/2008 Water Gross Beta 177 169 1.05 Agreement E5901-162 2nd/2008 Water I-131 LL 45.4 45.3 1.00 Agreement E5901-162 2nd/2008 Water 1-131 45.5 45.3 1.00 Agreement E5901-162 2nd/2008 Water Ce-141 223 237 0.94 Agreement E5901-162 2nd/2008 Water Cr-51 183 188 0.97 Agreement E5901-162 2nd/2008 Water Cs-1 34 94.8 104 0.91 Agreement E5901-162 2nd/2008 Water Cs-137 155 158 0.98 Agreement E5901-162 2nd/2008 Water Co-58 83.7 84.2 0.99 Agreement E5901-162 2nd/2008 Water Mn-54 191 184 1.04 Agreement E5901-162 2nd/2008 Water Fe-59 123 125 0.99 Agreement E5901-162 2nd/2008 Water Zn-65 162 172 0.94 Agreement E5901-162 2nd/2008 Water Co-60 143 142 1.01 Agreement E5902-162 2nd/2008 Water Sr-89 76.7 86.3 0.89 Agreement E5902-162 2nd/2008 Water Sr-90 15.3 16 0.95 Agreement E5903-162 2nd/2008 Water H-3 11700 13000 0.90 Aqreement E5904-162 2nd/2008 Charcoal 1-131 97.1 97.8 0.99 Agreement E5905-162 2nd/2008 Filter Gross Alpha 214 228 0.94 Agreement E5905-162 2nd/2008 Filter Gross Beta 210 199 1.06 Agreement E5906-162 2nd/2008 Filter Ce-141 204 211 0.97 Agreement E5906-162 2nd/2008 Filter Cr-51 180 167 1.08 Agreement E5906-162 2nd/2008 Filter Cs-1 34 89.5 92.7 0.97 Agreement E5906-162 2nd/2008 Filter Cs-137 151.6 140 1.08 Agreement E5906-162 2nd/2008 Filter Co-58 76 74.8 1.02 Agreement E5906-162 2nd/2008 Filter Mn-54 172 163 1.06 Agreement E5906-162 2 nd/2008 Filter Fe-59 110 ill 0.99 Agreement E5906-162 2 nd/2008 Filter Zn-65 153 153 1.00 Agreement E5906-162 2nd/2008 Filter Co-60 124 126 0.98 Agreement E5907-162 2nd/2008 Milk 1-131LL 69.9 71.4 0.98 Agreement E5907-162 2nd/2008 Milk 1-131 62.3 71.4 0.87 Agreement E5907-162 2nd/2008 Milk Ce-141 171 174 0.98 Agreement E5907-162 2nd/2008 Milk Cr-51 123 138 0.89 Agreement E5907-162 2nd/2008 Milk Cs-134 72.3 76.7 0.94 Agreement E5907-162 2nd/2008 Milk Cs-137 119 116 1.03 Agreement E5907-162 2nd/2008 Milk Co-58 59.3 61.9 0.96 Agreement E5907-162 2nd/2008 Milk Mn-54 146 135 1.08 Agreement E5907-162 2nd/2008 Milk Fe-59 97.6 91.7 1.06 Agreement E5907-162 2nd/2008 Milk Zn-65 125 127 0.98 Agreement E5907-162 2nd/2008 Milk Co-60 106 104 1.02 Agreement pCi/Liter (Filters in pCi)

-101-1

I TABLE 6.2-1 (cont'd)

E-LAB RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM I

Quarter 4, 2007 - Quarter 3, 2008 Sample Quarter/ Sample' Reported Known Ratio E-LAB/

I Number E6238-162 E6238-162 Year 3rd/2008 3rd/2008 Med ia Water Water Nulid Gross Alpha Gross Beta

.Value*

141 147 Value*

152 134 Analytics 0.93 1.09 Evaluation Agreement Agreement I

E6239-162 E6239-162 E6239-162 3rd/2008 3rd/2008 3rd/2008 Water Water Water 1-131 LL 1-131 Ce-141 101.9 101 110 105 105 107 0.96 0.96 1.03 Agreement Agreement Agreement I

E6239-162 .3rd/2008 Water Cr-51 252 279 0.90 Agreement E6239-162 E6239-162 E6239-162 3 rd/2008 3 rd/2008 3rd/2008 Water Water Water Cs-1 34 Cs-137 Co-58 135 104 115 154 107 118 0.88 0.97 0.98 Agreement Agreement Agreement I

E6239-162 E6239-162 E6239-162 3rd/2008 3rd/2008 3rd/2008 Water Water Water Mn-54 Fe-59 Zn-65 117 99.3 208 110 95.6 211 1.06 1.04 0.99 Agreement Agreement Agreement I

E6239-162 3rd/2008 Water Co-60 148 155 0.95 Agreement E6240-162 E6240-162 3rd/2008 3rd/2008 Water Water Sr-89 Sr-90 77.6 12.3 95.5 14.2 0.81 0.86 Agreement Agreement I

E6241-162 3rd/2008 Water H-3 10200 11400 0.90 Agreement E6242-162 E6243-162 E6243-162 3rd/2008 3rd/2008 3rd/2008 Charcoal Filter Filter 1-131 Gross Alpha Gross Beta 75.6 120 122 81.4 129 113 0.93 0.93 1.07 Agreement Agreement Agreement I

E6244-162 E6244-162 E6244-162 3rd/2008 3rd/2008 3rd/2008 Milk Milk Milk I-131LL 1-131 Ce-141 65.9 71.0 163 67.9 67.9 161 0.97 1.05 1.01 Agreement Agreement Agreement I

I E6244-162 3rd/2008 Milk Cr-51 395 421 0.94 Agreement E6244-162 3rd/2008 Milk Cs-134 206 232 0.89 Agreement E6244-162 3rd/2008 Milk Cs-137 164 162 1.01 Agreement E6244-162 3rd/2008 Milk Co-58 177 179 0.99 Agreement E6244-162 E6244-162 E6244-162 3rd/2008 3rd/2008 3rd/2008 Milk Milk Milk Mn-54 Fe-59 Zn-65 176 154 320 166 144 319 1.06 1.06 1.00 Agreement Agreement Agreement I

E6244-162 E6245-162 E6245-162 3rd/2008 3rd/2008 3rd/2008 Milk Milk Milk Co-60 Sr-89 Sr-90 230 59.6 9.9 234 73.9 11 0.98 0.81 0.90 Agreement Agreement Agreement I

pCi/Liter (Filters in pCi)

I I

U I

I

-102-I

TABLE 6.3-1

SUMMARY

OF BLIND DUPLICATE SAMPLES January - December 2008 TYPE OF SAMPLE NUMBER OF PAIRED SAMPLES SUBMITTED Water 8 Algae 2 Mussels 2 TOTAL 12

-103-

7.0 Land Use Census3 The Offsite Dose Calculation Manual (ODOM 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 16 meteorological sectorsI within five miles of the plant. The 2008 census was completed in accordance with the requirements of the ODCM. In 2008, a global positioning system was used to determine locations in the off-site environs with respect to the center of the site (Unit 1 Containment).

The nearest resident, garden and milk animal locations identified in the 2008 Land Use Census and their distances are shown in Table 7.0-1. The annual census indicated there was one minor change in distance of the nearest resident (East sector) from those identified in the previous year's census, but the distanceI from the Containment Building only differed by a few meters from the 2007 distance. One new garden location (SSW sector) was noted as a change (approximately 200 meters closer to the Containment) from the 2007 census. No changes in the milk animal locations were identified in the 2008 land use census forI locations within 5 miles (8 kin).

The results of this year's census also showed that the sampling locations used in the REMP continue to have the highest calculated dose commitments of available locations. In 2008, 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 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 from locations with the highest potential for detecting plant effluents.

-104I

Table 7.0-1 2008 Land Use Census Results (Within 5 Miles)

R-eclor Uý MILSU"tu N 3.5 4.0 NNE 3.0 3.0 8.1D NE 2.9 3.5 ENE 2.3 E 2.6a ESE 2.7 SE 2.4 4.2 SSE 1.6 S 1.2 1.2 1.1 1.2a SSW SW 1.1 1.8 WSW 1.9 2.3 W 1.3 1.4 WNW 1.1 1.5 NW 1.2 1.3 6.9 NNW 1.0 1.0 5.3 a New in 2008.

b Milk location located just beyond the 8 km maximum inventory distance limit of ODCM Table A.9.1-1.

-105-

Sample Analysis Data List for 2008

-106-

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

AL 5 L13980-01 5/28/2008 AcTh-228 2.50E+01 2.40E+0 I 8.40E+0 I AL 5 L13980-01 5/28/2008 Ag-108m 2.50E+00 3.80E+00 1.40E+01 AL 5 L13980-01 5/28/2008 Ag-110m 1.26E+01 9.40E+00 3.20E+01 AL 5 L13980-01 5/28/2008 Ba-140 =7.70E+00 9.50E+00 4.60E+01 AL 5 L13980-01 5/28/2008 Be-7 3.50E+01 4.20E+01 1.50E+02 AL 5 L13980-01 5/28/2008 Ce-141 -8.40E+00 6.20E+00 2.40E+0 I AL 5 L13980-01 5/28/2008 Ce-144 -3.60E+01 2.20E+01 8.40E+0 I AL 5 L13980-01 5/28/2008 Co-57 -1.40E+00 2.80E+00 1.00E+01 AL 5 L13980-01 5/28/2008 Co-58 -6.20E+00 6.20E+00 2.50E+01 AL 5 L13980-01 5/28/2008 Co-60 -2.80E+00 9.1OE+00 3.50E+01 AL 5 L13980-01 5/28/2008 Cr-51 6.OOE+00 4.80E+01 1.70E+02 AL 5 L13980-01 5/28/2008 Cs-134 -4.90E+00 4.90E+00 2.70E+01 AL 5 L13980-01 5/28/2008 Cs-137 -3.60E+00 7.20E+00 2.70E+01 AL 5 L13980-01 5/28/2008 Fe-59 9.OOE+00 1.70E+01 6.20E+01 AL 5 L13980-01 5/28/2008 1-131 -1.20E+01 1.30E+01 5.10E+0I AL 5 L13980-01 5/28/2008 K-40 6.75E+03 3.40E+02 2.90E+02 AL 5 L13980-01 5/28/2008 La- 140 -7.70E+00 9.50E+00 4.60E+01 AL 5 L13980-01 5/28/2008 Mn-54 1.20E+00 5.80E+00 2.20E+01 AL 5 L13980-01 5/28/2008 Nb-95 5.80E+00 6.50E+00 2.30E+01 AL 5 L13980-01 5/28/2008 Ru-103 9.OOE-01 5.60E+00 2.1OE+01 AL 5 L13980-01 5/28/2008 Ru-106 -3.OOE+00 4.90E+01 1.90E+02 AL 5 L13980-01 5/28/2008 Sb-124 4.70E+00 8.20E+00 3.50E+01 AL 5 L13980-01 5/28/2008 Sb-125 6.OOE+00 1.30E+01 4.70E+01 AL 5 L13980-01 5/28/2008 Se-75 6.OOE-01 4.90E+00 1.80E+01 AL 5 L13980-01 5/28/2008 Zn-65 -3.40E+01 1.80E+01 7.50E+01 AL 5 L13980-01 5/28/2008 Zr-95 -5.OOE-01 9.40E+00 3.60E+01 AL 5 L14669-01 12/3/2008 AcTh-228 -7.10E+0I 2.60E+01 1.1OE+02 AL 5 L14669-01 12/3/2008 Ag-108m -6.20E+00 4.50E+00 1.80E+01 AL 5 L14669-01 12/3/2008 Ag-110m -4.1 OE+00 7. 1OE+00 2.80E+01 AL 5 L14669-01 12/3/2008 Ba-140 2.OOE+00 1.00E+01 4.20E+01 AL 5 L14669-01 12/3/2008 Be-7 1.00E+02 5.60E+01 1.80E+02 AL 5 L14669-01 12/3/2008 Ce-141 2.20E+00 7.40E+00 2.60E+0I AL 5 L14669-01 12/3/2008 Ce-144 1.1OE+01 2.40E+0 I 8.30E+01 AL 5 L14669-01 12/3/2008 Co-57 6.80E+00 3.20E+00 1.00E+01 AL 5 L14669-01 12/3/2008 Co-58 4.50E+00 6.60E+00 2.30E+01 AL 5 L14669-01 12/3/2008 Co-60 -1.40E+00 8.50E+00 3.20E+01 AL 5 L14669-01 12/3/2008 Cr-51 9.60E+0 1 4.20E+01 1.30E+02 AL 5 L14669-01 12/3/2008 Cs-134 1.40E+00 3.80E+00 1.50E+01 AL 5 L14669-01 12/3/2008 Cs-137 -1.30E+01 5.70E+00 2.40E+01 AL 5 L14669-01 12/3/2008 Fe-59 5.OOE+00 2.OOE+01 7.10E+01 AL 5 L14669-01 12/3/2008 1-131 9.OOE+00 1.30E+01 4.70E+01 AL 5 L14669-01 12/3/2008 K-40 8.62E+03 3.60E+02 3.40E+02 AL 5 L14669-01 12/3/2008 La-140 2.OOE+00 1.OOE+0I 4.20E+01 AL 5 L14669-01 12/3/2008 Mn-54 1.60E+00 5.70E+00 2.10E+01 AL 5 L14669-01 12/3/2008 Nb-95 1.56E+01 8.OOE+00 2.60E+01 AL 5 L14669-01 12/3/2008 Ru-103 8.OOE-01 6.40E+00 2.30E+01 AL 5 L14669-01 12/3/2008 Ru-106 7.OOE+00 5.30E+01 1.90E+02 AL 5 L14669-01 12/3/2008 Sb-124 -8.1 OE+00 8.1OE+00 4.40E+01 AL 5 L1,4669-01 12/3/2008 Sb-125 -1.70E+01 1.20E+01 4.80E+01 AL 5 LI14669-01 12/3/2008 Se-75 1.36E+01 5.30E+00 1.60E+01 AL 5 L14669-01 12/3/2008 Zn-65 -1.70E+0I 1.90E+01 7.40E+01 AL 5 L14669-01 12/3/2008 Zr-95 0.OOE+00 1.20E+01 4.40E+01 AL 55 L13980-02 5/28/2008 AcTh-228 4.90E+00 5.OOE+00 1.70E+01

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

+ Minimum Detectable Concentration > LoWer Limit of Detection Requirement 107

I Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

U AL 55 L13980-02 5/28/2008 Ag- 108m -8.50E-0 1 7.60E-01 2.60E+00 AL 55 L13980-02 5/28/2008 Ag-110m -2.OOE-01 1.40E+00 4.60E+00 AL 55 L13980-02 5/28/2008 Ba-140 -9.OOE-01 1.30E+00 4.80E+00 AL 55 L13980-02 5/28/2008 Be-7 1.36E+02 9.60E+00 2.70E+0I AL 55 L13980-02 5/28/2008 Ce- 141 -2.80E+00 1.60E+00 5.50E+00 AL AL 55 55 L13980-02 5/28/2008 LI 3980-02 5/28/2008 Ce-144 Co-57

-9.OOE-01 5.40E-01 4.40E+00 5.60E-01 1.50E+01 1.80E+00 I

AL 55 L 13980-02 5/28/2008 Co-58 -6.20E-01 9.50E-01 3.20E+00 AL AL AL 55 55 55 L13980-02 L13980-02 L13980-02 5/28/2008 5/28/2008 5/28/2008 Co-60 Cr-5I Cs-134

-1.30E+00 6.60E+00 1.60E+00 1.1OE+00 8.10E+00 1.00E+00 3.90E+00 2.70E+0I 3.40E+00 I

5/28/2008 -1.20E+00 1.1 OE+00 3.70E+00 AL 55 I

L13980-02 Cs-137 AL 55 L13980-02 5/28/2008 Fe-59 5. 1OE+00 2.50E+00 8.30E+00 AL 55 L13980-02 5/28/2008 1-131 1.26E+01 2.OOE+00 6.40E+00

AL 55 L13980-02 5/28/2008 K-40 6.21E+03 5.30E+01 4.70E+0 I AL AL, AL 55 55 55 L13980-02 5/28/2008 L13980-02 5/28/2008 LI 3980-02 5/28/2008 La-140 Mn-54 Nb-95

-1.00E+00 5.OOE-01 6.OOE-01 1.40E+00 9.80E-01 1.00E+00 4.80E+00 3.30E+00 3.40E+00 U

AL 55 LI13980-02 5/28/2008 Ru-103 2.20E-01 8.50E-01 2.80E+00 AL AL 55 55 L13980-02 L13980-02 5/28/2008 5/28/2008 Ru-106 Sb-124

-9.50E+00 7.OOE-01 8.70E+00 1.80E+00 3.OOE+01 6.1OE+00 I

AL 55 L13980-02 5/28/2008 Sb-125 -2.80E+00 2.30E+00 8.OOE+00 AL AL AL 55 55 55 L13980-02 L13980-02 5/28/2008 5/28/2008 L13980-02 5/28/2008 Se-75 Zn-65 Zr-95

-4.40E-01 1.60E+00 1.00E+00 9.70E-01 4.1 OE+00 1.70E+00 3.30E+00 1.40E+01 5.70E+00 U

AL 55 L14669-02 12/3/2008 AcTh-228 1.47E+01 6.OOE+00 2.OOE+01 AL AL 55 55 L14669-02 L14669-02 12/3/2008 12/3/2008 Ag-108m Ag-1 10m 1.16E+00

-2.70E+00 8.80E-01 1.70E+00 2.90E+00 5.80E+00 I

AL 55 L14669-02 12/3/2008 Ba-140 1.20E+00 2. 1OE+00 7.OOE+00 AL AL AL 55 55 55 L14669-02 LI14669-02 L14669-02 12/3/2008 12/3/2008 12/3/2008 Be-7 Ce-141 Ce- 144 2.47E+02

-4.OOE-01

-1.21E+01 1.40E+01 1.60E+00 5.70E+00 3.80E+01 5.30E+00 1.90E+01 I

AL 55 LI14669-02 12/3/2008 Co-57 -1.34E+00 7.40E-0 1 2.50E+00 AL AL 55 55 L14669-02 L14669-02 12/3/2008 12/3/2008 Co-58 Co-60

-9.OOE-01 2.70E+00 i .20E+00 1.20E+00 4.OOE+00 3.90E+00 I

AL 55 L14669-02 12/3/2008 Cr-51 2.04E+01 9.80E+00 3.20E+0 I AL AL AL 55 55 55 L14669-02 L14669-02 L14669-02 12/3/2008 12/3/2008 12/3/2008 Cs-134 Cs-137 Fe-59

-3.OOE-01

2. 1OE+00 0.OOE+00 1.20E+00 I.IOE+00 3.OOE+00 4.OOE+00 3.70E+00 1.00E+01 U

AL 55 L14669-02 12/3/2008 1-131 3.37E+01 3.90E+00 1.20E+01

AL AL 55 55 L14669-02 L14669-02 12/3/2008 12/3/2008 K-40 La- 140 6.50E+03 1.20E+00 6.OOE+01 2.1OE+00 5.1OE+0I 7.OOE+00 3.60E+00 I

AL 55 L14669-02 12/3/2008 Mn-54 3.OOE-01 1.1OE+00 AL AL AL 55 55 55 L14669-02 L14669-02 L14669-02 12/3/2008 12/3/2008 12/3/2008 Nb-95 Ru-103 Ru-106 1.80E+00 9.OOE-01

-1.18E+01 2.40E+00 1.20E+00 9.90E+00 7.80E+00 3.90E+00 3.40E+01 U

AL 55 L14669-02 12/3/2008 Sb-124 3.OOE-01 2.OOE+00 7. 1OE+00 AL 55 L14669-02 12/3/2008 Sb-125 4.OOE-01 2.70E+00 9.1OE+00 AL AL AL 55 55 55 L14669-02 L14669-02 L14669-02 12/3/2008 12/3/2008 12/3/2008 Se-75 Zn-65 Zr-95 1.40E+00

-5.1 OE+00 2.OOE+00 1.20E+00 3.20E+00 2.OOE+00 3.90E+00 1.50E+01 6.70E+00 I

AL El L14669-04 10/27/2008 AcTh-228 -1.50E+01 4.OOE+01 1.60E+02 AL El L14669-04 10/27/2008 Ag-108m 1.08E+01 7.OOE+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 2.30E+01 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 108 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) ý (pCi/kg) (pCi/kg)

AL El L14669-04 10/27/2008 Ag-110m -I.30E+01 1.40E+01 6.30E+01 AL El LI14669-04 10/27/2008 Ba-140 -7.OOE+01 1.60E+02 7.80E+02 AL El L14669-04 10/27/2008 Be-7 3.60E+02 1.50E+02 4.40E+02 AL El L14669-04 10/27/2008 Ce-I141 -2.80E+01 2.50E+01 9.60E+01 AL El L14669-04 10/27/2008 Ce- 144 -7.90E+01 4.30E+01 1.80E+02 AL El L14669-04 10/27/2008 Co-57 1.09E+01 5.70E+00 1.80E+01 AL El L14669-04 10/27/2008 Co-58 1.50E+01 1.50E+01 5.30E+01 AL El L14669-04 10/27/2008 Co-60 1.00E+01 1.20E+01 4.60E+0 1 AL El L14669-04 10/27/2008 Cr-51 1.101E+02 2.30E+02 8.1OE+02 AL El L14669-04 10/27/2008 Cs-134 7.OOE+00 1.00E+01 4.80E+0 I AL El L14669-04 10/27/2008 Cs-137 2.80E+00 8.90E+00 3.50E+01 AL El L14669-04 10/27/2008 Fe-59 -3.80E+01 4.90E+01 2.1OE+02 AL El L14669-04 10/27/2008 1-131 -2.1 OE+02 6.OOE+02 2.30E+03 AL El L14669-04 10/27/2008 K-40 4.85E+03 4.50E+02 4.90E+02

AL El L14669-04 10/27/2008 La-140 -7.OOE+01 1.60E+02 7.80E+02 AL El L14669-04 10/27/2008 Mn-54 5.OOE+00 1.00E+01 3.90E+01 AL El L14669-04 10/27/2008 Nb-95 2.OOE+00 2.60E+01 1.00E+02 AL El L14669-04 10/27/2008 Ru-103 3.40E+01 2.20E+01 7.OOE+01 AL El L14669-04 10/27/2008 Ru-106 -2.90E+01 9.40E+01 3.80E+02 AL El L14669-04 10/27/2008 Sb-124 5.30E+01 3.90E+01 1.30E+02 AL El L14669-04 10/27/2008 Sb-125 -5.OOE+00 1.90E+01 7.60E+0 I AL El L14669-04 10/27/2008 Se-75 -5.OOE+00 1.20E+01 4.60E+01 AL El L14669-04 10/27/2008 Zn-65 -6.80E+01 3.80E+01 1.60E+02 AL El L14669-04 10/27/2008 Zr-95 2.50E+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 109

Monitoring Program -2008 Seabrook Nuclear Power Station Radiological Environmental SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP AP LI13424-01 L13503-01 1/2/2008 1/16/2008 Gross Beta Gross Beta 1.66E-02 2.12E-02 1.50E-03 1.60E-03 3.90E-03 3.90E-03 I

AP L13568-01 1/30/2008 Gross Beta 1.72E-02 1.50E-03 3.50E-03 AP AP L13604-01 L13656-01 2/13/2008 2/27/2008 Gross Beta Gross Beta 2.23E-02 1.68E-02 1.70E-03 1.60E-03 4.OOE-03

4. 1OE-03 4.OOE-03 I

AP L13692-01 3/12/2008 Gross Beta 1.69E-02 1.60E-03 AP L13731-01 3/26/2008 Gross Beta 1.80E-02 1.60E-03 4.10E-03 AP L13791-01 4/9/2008 Gross Beta 1.59E-02 1.70E-03 4.30E-03 AP L13840-01 4/23/2008 Gross Beta 1.58E-02 1.50E-03 3.50E-03 AP L13851-01 3/26/2008 AcTh-228 -2.20E-03 9.80E-04 5.20E-03 AP AP L13851-01 L13851-01 3/26/2008 3/26/2008 Ag-108m Ag-I10m

-2.OOE-04 1.60E-04 2.OOE-04 4.20E-04 1.80E-02 8.70E-04 1.70E-03 I AP L13851-01 3/26/2008 Ba-140 -2.50E-02 9.90E-02 I

k AP L13851-01 3/26/2008 Be-7 1.22E-01 1.50E-02 2.70E-02 AP L13851-01 3/26/2008 Ce-141 -1.30E-03 1.20E-03 4.80E-03 AP L13851-01 3/26/2008 Ce-144 1.40E-03 1.20E-03 4.OOE-03 AP L13851-01 3/26/2008 Co-57 1.50E-04 1.40E-04 4.90E-04 AP AP L13851-01 L13851-01 3/26/2008 3/26/2008 3/26/2008 Co-58 Co-60 6.40E-04

-6.70E-04 2.60E-02 5.40E-04 3.90E-04 1.30E-02 1.90E-03 2.OOE-03 4.20E-02 I

AP L13851-01 Cr-51 AP AP AP L13851-01 L13851-01 L13851-01 3/26/2008 3/26/2008 3/26/2008 Cs-134 Cs-137 Fe-59 4.1 OE-04 0.OOE+00 2.1 OE-03 2.40E-04 3.10E-04 2.10E-03 1.00E-03 1.30E-03 7.60E-03 I

AP L13851-01 3/26/2008 1-131 -9.40E-02 5.80E-02 2.60E-01 AP AP L13851-01 L13851-01 3/26/2008 3/26/2008 K-40 La- 140

-5.90E-03

-2.50E-02 4.40E-04 3.60E-03 1.80E-02 2.90E-04 1.90E-02 9.90E-02 9.10E-04 I

AP L13851-01 3/26/2008 Mn-54 AP AP AP L13851-01 L13851-01 L13851-01 3/26/2008 3/26/2008 3/26/2008 Nb-95 Ru-103 Ru-106

-1.60E-03 2.30E-04

-8.OOE-04 1.OOE-03 8.40E-04 2.90E-03 5.30E-03 3.30E-03 1.20E-02 I

AP L13851-01 3/26/2008 Sb-124 0.OOE+00 1.90E-03 8.60E-03 AP AP LI3851-01 L13851-01 3/26/2008 3/26/2008 3/26/2008 Sb-125 Se-75 6.40E-04

-4.90E-04

-2.04E-03 5.90E-04 3.60E-04 9.70E-04 2.10E-03 1.50E-03 4.90E-03 I

AP L13851-01 Zn-65 AP AP AP L13851-01 L13910-01 L13955-01 3/26/2008 5/7/2008 5/20/2008 Zr-95 Gross Beta Gross Beta

-6.00E-04 1.48E-02 1.09E-02 1.1OE-03 1.50E-03 1.70E-03 4.90E-03 3.60E-03 4.60E-03 I

AP L14005-01 6/4/2008 Gross Beta 9.50E-03 1.30E-03 3.40E-03 AP AP L14052-01 L14107-01 6/18/2008 7/2/2008 7/16/2008 Gross Beta Gross Beta 1.49E-02 1.48E-02 1.48E-02 1.40E-03 1.40E-03 1.40E-03 3.50E-03 3.30E-03 3.20E-03 I

AP LI4160-01 Gross Beta AP AP AP L14184-01 L14184-01 L14184-01 7/2/2008 7/2/2008 7/2/2008 AcTh-228 Ag-108m Ag-110m

-1.32E-03 0.OOE+00 2.OOE-05 7.20E-04 1.80E-04 2.50E-04 4.40E-03 7.40E-04 1.30E-03 I

AP L14184-01 7/2/2008 Ba-140 4.40E-02 2.20E-02 3.OOE-02 AP AP AP LI4184-01 L14184-01 L14184-01 7/2/2008 7/2/2008 7/2/2008 Be-7 Ce- 141 Ce-144 1.1OE-0 1

-I.IOE-03

-6.OOE-04 1.40E-02 9.60E-04 1.00E-03 1.90E-02 4.20E-03

4. 1OE-03 I

AP L14184-01 7/2/2008 Co-57 -6.OOE-05 1.1OE-04 4.60E-04 AP L14184-01 7/2/2008 Co-58 I. 1OE-04 6.50E-04 2.70E-03 AP L14184-01 7/2/2008 Co-60 -4.OOE-04 3.60E-04 1.90E-03 AP L14184-01 7/2/2008 Cr-51 -5.00E-03 1.10E-02 4.70E-02 AP L14184-01 7/2/2008 Cs-134 -3.OOE-05 1.60E-04 8.60E-04

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 110 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L14184-01 7/2/2008 Cs-137 2.80E-04 2.40E-04 8.60E-04 AP L14184-01 7/2/2008 Fe-59 3.50E-03 1.80E-03 2.40E-03 AP L14184-01 7/2/2008 1-131 -4.20E-02 6.40E-02 2.80E-01 AP L14184-01 7/2/2008 K-40 3. lOE-03 5.1OE-03 2.OOE-02 AP L14184-01 7/2/2008 La-140 4.40E-02 2.20E-02 3.OOE-02 AP L14184-01 7/2/2008 Mn-54 1.80E-04 3.70E-04 1.40E-03 AP L14184-01 7/2/2008 Nb-95 -8.OOE-04 1.40E-03 6.30E-03 AP L14184-01 7/2/2008 Ru-103 -1.46E-03 9.70E-04 4.60E-03 AP L14184-01 7/2/2008 Ru-106 9.OOE-04 1.50E-03 6.50E-03 AP L14184-01 7/2/2008 Sb-124 3.40E-03 2.OOE-03 3.10E-03 AP L14184-01 7/2/2008 Sb-125 1.80E-04 6.OOE-04 2.40E-03 AP L14184-01 7/2/2008 Se-75 -3.20E-04 3.70E-04 1.60E-03 AP L14184-01 7/2/2008 Zn-65 -6.80E-04 6.80E-04 3.70E-03 AP L14184-01 7/2/2008 Zr-95 -1 .40E-04 9.1OE-04 4.20E-03 AP L14214-01 7/30/2008 Gross Beta i .73E-02 1.40E-03 3.20E-03 AP L14268-01 8/13/2008 Gross Beta 1.08E-02 1.40E-03 3.60E-03 AP L14317-01 8/27/2008 Gross Beta 1.58E-02 1.50E-03 3.70E-03 AP L14364-01 9/10/2008 Gross Beta 1.62E-02 1.40E-03 3.40E-03 AP Lt 4422-01 9/24/2008 Gross Beta 9.50E-03 1.30E-03 3.30E-03 AP L14467-01 9/24/2008 AcTh-228 2.50E-04 7.40E-04 3.20E-03 AP L14467-01 9/24/2008 Ag-108m 2.20E-04 2.20E-04 7.70E-04 AP LI14467-01 9/24/2008 Ag-1 10m 5.50E-04 4.30E-04 1.50E-03 AP LI14467-01 9/24/2008 Ba-140 -1.48E-02 9. 1OE-03 4.80E-02 AP L14467-01 9/24/2008 Be-7 1.10E-01 1.20E-02 1.40E-02 AP L14467-01 9/24/2008 Ce-141 2.1OE-04 7.OOE-04 2.60E-03 AP LI14467-01 9/24/2008 Ce- 144 2.50E-04 8.90E-04 3.30E-03 AP L14467-01 9/24/2008 Co-57 -1.80E-04 1.00E-04 4.60E-04 AP L14467-01 9/24/2008 Co-58 1.50E-04 3.20E-04 1.40E-03 AP L14467-01 9/24/2008 Co-60 3.OOE-04 3.30E-04 1.20E-03 AP L14467-01 9/24/2008 Cr-51 1.09E-02 7.60E-03 2.50E-02 AP LI4467-01 9/24/2008 Cs-134 1.1 OE-04 2.OOE-04 1.1 OE-03 AP L14467-01 9/24/2008 Cs-137 9.OOE-05 2.40E-04 9.60E-04 AP LI14467-01 9/24/2008 Fe-59 0.OOE+00 1.50E-03 6.50E-03 AP L14467-01 9/24/2008 1-131 -1.70E-02 1.30E-02 5.80E-02 AP L14467-01 9/24/2008 K-40 1.30E-03 4. 1OE-03 1.70E-02 AP L14467-01 9/24/2008 La- 140 -1..48E-02 9.1OE-03 4.80E-02 AP L14467-01 9/24/2008 Mn-54 3.OOE-04 3.1OE-04 1.1OE-03 AP L14467-01 9/24/2008 Nb-95 -9.70E-04 8.20E-04 4.1 OE-03 AP L14467-01 9/24/2008 Ru-103 0.OOE+00 6.60E-04 2.70E-03 AP L14467-01 9/24/2008 Ru-106 4.90E-03 2.OOE-03 2.20E-03 AP L14467-01 9/24/2008 Sb-124 -8.50E-04 8.50E-04 6.30E-03 AP L14467-01 9/24/2008 Sb-125 6.90E-04 6.40E-04 2.30E-03 AP L14467-01 9/24/2008 Se-75 1.00E-05 3.30E-04 1.30E-03 AP L14467-01 9/24/2008 Zn-65 -3.1 OE-04 8.1 OE-04 3.70E-03 AP L14467-01 9/24/2008 Zr-95 5.30E-04 8.20E-04 3.20E-03 AP L14490-01 10/8/2008 Gross Beta 9.OOE-03 1.40E-03 4.OOE-03 AP L14542-01 10/22/2008 Gross Beta 1.71 E-02 1.60E-03 4.OOE-03 AP L14587-01 11/5/2008 Gross Beta 1.81E-02 1.50E-03 3.40E-03 AP L14635-01 11/19/2008 Gross Beta 8.1 OE-03 1.20E-03 3.40E-03 AP L14673-01 12/3/2008 Gross Beta 1.44E-02 1.30E-03 3.1OE-03 AP L14730-01 12/18/2008 Gross Beta 1.82E-02 1.40E-03 3.40E-03 AP L14762-01 12/30/2008 Gross Beta 2.47E-02 1.70E-03 3.70E-03 AP L14791-01 12/30/2008 AcTh-228 5.80E-04 8.1 OE-04 3.OOE-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 111

-2008 Seabrook Nuclear Power Station Radiological Environmental Monitoring Program SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

I AP L14791-01 12/30/2008 Ag-108m 1.1OE-04 1.50E-04 5.30E-04 AP AP AP L14791-01 L14791-01 L14791-01 12/30/2008 12/30/2008 12/30/2008 Ag-1 10m Ba-140 Be-7 4.OOE-04 2.70E-03 9.74E-02 3.40E-04 3.30E-03

9. 1OE-03 1.20E-03 1.30E-02 1.40E-02

U AP L14791-01 12/30/2008 Ce-141 - 1.44E-03 6.20E-04 2.60E-03 AP AP L14791-01 L14791-01 12/30/2008 12/30/2008 Ce- 144 Co-57 I.OOE-04

-1.60E-04 1.1OE-03 1.20E-04 3.90E-03 4.80E-04 I

AP L14791-01 12/30/2008 Co-58 -4. 10E-04 3.50E-04 1.60E-03 AP AP AP L14791-01 L14791-01 L14791-01 12/30/2008 12/30/2008 12/30/2008 Co-60 Cr-51 Cs-134

-1.80E-04

-2.OOE-03

-1. 1OE-04 1.80E-04 5.60E-03 2.OOE-04 9.60E-04 2.20E-02 I.OOE-03 I

AP L14791-01 12/30/2008 Cs- 137 -4.OOE-04 2.OOE-04 9.80E-04 AP AP L14791-01 L14791-01 12/30/2008 12/30/2008 Fe-59 1-131 6.00E-04 4.50E-03 6.60E-04 5.70E-03 2.50E-03 2.OOE-02 I

AP L14791-01 12/30/2008 K-40 -I.00E-04 3.70E-03 1.50E-02 AP AP AP L14791-01 L14791-01 L14791-01 12/30/2008 12/30/2008 12/30/2008 La- 140 Mn-54 Nb-95 2.70E-03 0.OOE+00

-5.80E-04 3.30E-03 1.90E-04 7.OOE-04 1.30E-02 7.90E-04 3.OOE-03 I

AP L14791-01 12/30/2008 Ru-103 3.40E-04 4.80E-04 1.70E-03 AP AP L14791-01 L14791-01 12/30/2008 12/30/2008 Ru- 106 Sb-124 3.70E-03

-4.40E-04 2.1OE-03 7.60E-04 6.70E-03 4.103E-03 I

AP L14791-01 12/30/2008 Sb-125 3.40E-04 5.40E-04 2.OOE-03 AP AP AP L14791-01 L14791-01 L14791-01 12/30/2008 12/30/2008 12/30/2008 Se-75 Zn-65 Zr-95 I.OOE-04

-1.86E-03

-3.60E-04 3.20E-04 7.90E-04 6.30E-04 1.20E-03 3.70E-03 2.70E-03 I

AP L13424-02 1/2/2008 Gross Beta 1.69E-02 1.60E-03 3.90E-03

AP AP L13503-02 L13568-02 1/16/2008 1/30/2008 Gross Beta Gross Beta 2.14E-02 1.97E-02 1.70E-03 1.60E-03 3.90E-03 3.50E-03

I AP L13604-02 2/13/2008 Gross Beta 2.04E-02 1.60E-03 3.90E-03

AP AP AP L13656-02 L13692-02 L13731-02 2/27/2008 3/12/2008 3/26/2008 Gross Beta Gross Beta Gross Beta 1.75E-02 1.57E-02 1.73E-02 1.60E-03 1.60E-03 1.60E-03 4.10E-03 4.OOE-03

4. 1OE-03

,I AP L13791-02 4/9/2008 Gross Beta 1.27E-02 1.60E-03 4.30E-03

AP AP L13840-02 L13851-02 4/23/2008 3/26/2008 Gross Beta AcTh-228 1.92E-02

-6.80E-04 1.60E-03 8.OOE-04 3.50E-03 3.50E-03 I

AP L13851-02 3/26/2008 Ag-108m -4.00E-05 1.90E-04 7.30E-04 AP AP AP L13851-02 L13851-02 L13851-02 3/26/2008 3/26/2008 3/26/2008 Ag-1 10m Ba-140 Be-7

-1.10E-04

-1.50E-02 1.24E-01 3.50E-04 1.1OE-02 1.30E-02 1.50E-03 6.20E-02 2.70E-02

I AP L13851-02 3/26/2008 Ce- 141 -9.OOE-04 1.20E-03 4.50E-03 AP AP L13851-02 L13851-02 3/26/2008 3/26/2008 Ce- 144 Co-57

-7.OOE-04 2.90E-04 1.1OE-03 1.40E-04 4.1 OE-03 4.40E-04 I

AP L13851-02 3/26/2008 Co-58 2.60E-04 5.1OE-04 1.90E-03 AP AP AP L13851-02 L13851-02 L13851-02 3/26/2008 3/26/2008 3/26/2008 Co-60 Cr-51 Cs-134 3.70E-04

- 1.20E-02

- 1.80E-04 3.20E-04 I.OOE-02 1.90E-04 1.1OE-03 4.20E-02 9.80E-04 I

AP L13851-02 3/26/2008 Cs-137 -3.OOE-05 2.30E-04 9.30E-04 AP AP L13851-02 L13851-02 3/26/2008 3/26/2008 Fe-59 1-131

-2.10E-03

-3.OOE-02 1.20E-03 5.OOE-02 6.50E-03 2.OOE-01 I

AP L13851-02 3/26/2008 K-40 1.80E-03 3.60E-03 1.40E-02 AP L13851-02 3/26/2008 La-140 -1.50E-02 1.IOE-02 6.20E-02 AP L13851-02 3/26/2008 Mn-54 -2.10E-04 2.50E-04 1.1OE-03 AP L13851-02 3/26/2008 Nb-95 1.1OE-03 1.30E-03 4.70E-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

112 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L13851-02 3/26/2008 Ru-103 -4.80E-04 8.40E-04 3.40E-03 AP L13851-02 3/26/2008 Ru-106 -1.80E-03 3.OOE-03 1.20E-02 AP L13851-02 3/26/2008 Sb-124 -6.OOE-04 1.50E-03 6.90E-03 AP L13851-02 3/26/2008 Sb-125 -1.20E-04 4.80E-04 1.90E-03 AP L13851-02 3/26/2008 Se-75 1.70E-04 3.70E-04 1.30E-03 AP L13851-02 3/26/2008 Zn-65 1.40E-04 4.50E-04 1.90E-03 AP L13851-02 3/26/2008 Zr-95 9.40E-04 8.80E-04 3.10E-03 AP L13910-02 5/7/2008 Gross Beta 1.62E-02 1.50E-03 3.50E-03 AP L13955702 5/20/2008 Gross Beta 1.1OE-02 1.60E-03 4.60E-03 AP L14005-02 6/4/2008 Gros's Beta 9.70E-03 1.30E-03 3.50E-03 AP L114052-02 6/18/2008 Gross Beta 1.46E-02 1.50E-03 3.80E-03 AP L14107-02 7/2/2008 Gross Beta 1.56E-02 1.50E-03 3.60E-03 AP L14160-02 7/16/2008 Gross Beta 1.64E-02 1.50E-03 3.40E-03 AP L14184-02 7/2/2008 AcTh-228 - 1.20E-03 1.20E-03 5.80E-03 AP L14184-02 7/2/2008 Ag- 108m -1.80E-04 2.20E-04 9.50E-04 AP L14184-02 7/2/2008 Ag-110m 2.OOE-04 4.40E-04 1.80E-03 AP L14184-02 7/2/2008 Ba-140 - 1.20E-02 1.20E-02 8.50E-02 AP L14184-02 7/2/2008 Be-7 1.33E-01 1.70E-02 3.20E-02 AP L14184-02 7/2/2008 Ce-141 4.OOE-04 1.50E-03 5.50E-03 AP L14184-02 7/2/2008 Ce-144 1.50E-03 1.1 OE-03 3.50E-03 AP L14184-02 7/2/2008' Co-57 -2.OOE-05 1.50E-04 5.60E-04 AP L14184-02 7/2/2008 Co-58 3.OOE-05 3.20E-04 1.70E-03 AP L14184-02 7/2/2008 Co-60 1.50E-04 3.10E-04 1.30E-03 AP L14184-02 7/2/2008 Cr-51 -2.50E-02 1.30E-02 6. 1OE-02 AP L14184-02 7/2/2008 Cs-134 -2.80E-04 2.40E-04 1.50E-03 AP L14184-02 7/2/2008 Cs-137 -5.80E-04 2.90E-04 1.50E-03 AP L14184-02 7/2/2008 Fe-59 3.70E-03 2.30E-03 6.80E-03 AP L14184-02 7/2/2008 1-131 3.80E-02 6.OOE-02 2.30E-01 AP L14184-02 7/2/2008 K-40 5.OOE-03 5.60E-03 2.OOE-02 AP L14184-02 7/2/2008 La-140 -1.20E-02 1.20E-02 8.50E-02 AP L1'4184-02 7/2/2008 Mn-54 5.30E-04 3.I OE-04 8.80E-04 AP L14184-02 7/2/2008 Nb-95 I .80E-03 1.60E-03 5.60E-03 AP L14184-02 7/2/2008 Ru-103 -6.OOE-04 1.1OE-03 4.60E-03 AP L14184-02 7/2/2008 Ru-106 1.60E-03 2.40E-03 9.40E-03 AP L14184-02 7/2/2008 Sb-124 -2.40E-03 1.70E-03 1.1OE-02 AP L14184-02 7/2/2008 Sb-125 5.80E-04 7.40E-04 2.70E-03 AP L14184-02 7/2/2008 Se-75 -1.20E-04 4.40E-04 1.70E-03 AP L14184-02 7/2/2008 Zn-65 -3.60E-04 3.60E-04 2.60E-03 AP L14184-02 7/2/2008 Zr-95 4.90E-04 7.30E-04 3.OOE-03 AP L14214-02 7/30/2008 Gross Beta 1.85E-02 1.50E-03 3.40E-03 AP L14268-02 8/13/2008 Gross Beta 9.60E-03 1.40E-03 3.70E-03 AP L14317-02 8/27/2008 Gross Beta 1.86E-02 1.60E-03 3.80E-03 AP L14364-02 9/10/2008 Gross Beta 1.61E-02 1.50E-03 3.50E-03 AP LI14422-02 9/24/2008 Gross Beta I. 19E-02 1.30E-03 3.40E-03 AP LI14467-02 9/24/2008 AcTh-228 -5.40E-04 5.80E-04 3.50E-03 AP LI14467-02 9/24/2008 Ag-108m -1.70E-04 2.30E-04 9.70E-04 AP LI14467-02 9/24/2008 Ag-I 10m 1.80E-04 4.70E-04 1.90E-03 AP LI14467-02 9/24/2008 Ba-140 0.OOE+00 7.80E-03 3.60E-02 AP L14467-02 9/24/2008 Be-7 1.03E-01 1.20E-02 1.50E-02 AP L14467-02 9/24/2008 Ce- 141 1.32E-03 8.40E-04 2.70E-03 AP LI14467-02 9/24/2008 Ce- 144 -5.OOE-04 1.1OE-03 4.40E-03 AP LI14467-02 9/24/2008 Co-57 -2.20E-04 1.40E-04 5.80E-04 AP LI14467-02 9/24/2008 Co-58 6.1OE-04 4.80E-04 1.60E-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 113

-2008 Seabrook Nuclear Power Station Radiological Environmental Monitoring Program SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3) I AP AP AP L14467-02 L14467-02 L14467-02 9/24/2008 9/24/2008 9/24/2008 Co-60 Cr-51 Cs-134 3.1 OE-04

-7.20E-03

-9.OOE-05 3.50E-04 8.40E-03

2. 1OE-04 1.30E-03 3.50E-02 1.30E-03 I

AP AP AP L14467-02 L14467-02 LI14467-02 9/24/2008 9/24/2008 9/24/2008 Cs-137 Fe-59 1-131

-2.OOE-04

-1.30E-03 1.1OE-02 3.70E-04 1.30E-03 1.20E-02 1.60E-03 6.90E-03 4.40E-02 I

AP AP AP LI14467-02 L14467-02 L14467-02 9/24/2008 9/24/2008 9/24/2008 K-40 La- 140 Mn-54 5.OOE-04 0.OOE+00 7.50E-04 2.90E-03 7.80E-03 3.70E-04 1.40E-02 3.60E-02 1.001E-03 I

AP L14467-02 9/24/2008 Nb-95 -1.68E-03 6.90E-04 4.20E-03 AP AP AP L14467-02 L14467-02 L14467-02 9/24/2008 9/24/2008 9/24/2008 Ru-103 Ru-106 Sb-124 1.23E-03

5. 1OE-03 0.OOE+00 5.80E-04 2.50E-03 0.OOE+00 1.50E-03 6.90E-03 2.40E-03 I

AP AP AP LI14467-02 L14467-02 L14467-02 9/24/2008 9/24/2008 9/24/2008 Sb-125 Se-75 Zn-65 1.29E-03 1.60E-04

-3.30E-03 7.60E-04 3.50E-04 1.1OE-03 2.40E-03 1.30E-03 5.90E-03 I

AP L14467-02 9/24/2008 Zr-95 -4.60E-04 8.80E-04 4.10E-03 AP AP AP L14490-02 L14542-02 L14587-02 10/8/2008 10/22/2008 11/5/2008 Gross Beta Gross Beta Gross Beta 9.OOE-03 2.23E-02 1.48E-02 1.40E-03 1.70E-03 1.40E-03

4. 1OE-03 4.OOE-03 3.50E-03

k I

AP L14635-02 11/19/2008 1.30E-03 AP AP L14673-02 L14730-02 12/3/2008 12/18/2008 Gross Beta Gross Beta Gross Beta 7.70E-03 1.28E-02 1.77E-02 1.30E-03 1.50E-03 3.50E-03 3.30E-03 3.60E-03 I

AP L14762-02 12/30/2008 Gross Beta 2.52E-02 1.80E-03 4.10E-03 AP AP AP L14791-02 L14791-02 L14791-02 12/30/2008 12/30/2008 12/30/2008 AcTh-228 Ag-108m Ag-I 10m 4.OOE-04 3.40E-04

-2.30E-04 1.1OE-03 2.20E-04 3.40E-04 4.40E-03 6.90E-04 1.80E-03 I

AP L14791-02 12/30/2008 AP AP L14791-02 L14791-02 12/30/2008 12/30/2008 Ba-140 Be-7 Ce-141

-2.30E-03 8.80E-02

-8.50E-04 2.30E-03 1.1OE-02 6.90E-04 1.80E-02 1.60E-02 2.90E-03 I

AP L14791-02 12/30/2008 Ce- 144 0.OOE+00 1.OOE-03 3.90E-03 AP AP AP L14791-02 L14791-02 L14791-02 12/30/2008 12/30/2008 12/30/2008 Co-57 Co-58 Co-60 7.OOE-05

-3.OOE-05

-2.30E-04 1.30E-04 2.70E-04 4.OOE-04 4.70E-04 1.40E-03 1.90E-03 I

U AP L14791-02 12/30/2008 Cr-51 I.OOE-02 5.10E-03 1.50E-02 AP L14791-02 12/30/2008 Cs-134 -4.OOE-04 2.20E-04 1.40E-03 AP L14791-02 12/30/2008 Cs-137 0.OOE+00 3.20E-04 1.30E-03 AP L14791-02 12/30/2008 Fe-59 -6.OOE-04 1.60E-03 7. 1OE-03 AP AP AP L14791-02 L14791-02 L14791-02 12/30/2008 12/30/2008 12/30/2008 1-131 K-40 La- 140

.1.30E-02

-3.70E-03

-2.30E-03 7.80E-03 2.60E-03 2.30E-03 2.50E-02 1.60E-02 1.80E-02 I

AP L14791-02 12/30/2008 -2.30E-04 4.20E-04 I.80E-03 I

Mn-54 AP L14791-02 12/30/2008 Nb-95 -4.30E-04 7.OOE-04 3.40E-03 AP L14791-02 12/30/2008 Ru-103 -1.80E-04 6.10E-04 2.60E-03 AP L14791-02 12/30/2008 Ru-106 9.OOE-04 2.30E-03 9.20E-03 AP AP AP L14791-02 L14791-02 L14791-02 12/30/2008 12/30/2008 12/30/2008 Sb-124 Sb-125 Se-75

-8.50E-04 3.60E-04 2.30E-04 8.50E-04 6.80E-04 3.50E-04 6.20E-03 2.60E-03 1.30E-03 I

AP L14791-02 12/30/2008 AP AP L14791-02 L13424-03 12/30/2008 1/2/2008 Zn-65 Zr-95 Gross Beta

-1.60E-03 2.1OE-04 1.95E-02 8.50E-04 7.60E-04 1.80E-03 4J50E-03 3.20E-03 4.40E-03

I AP L13503-03 1/16/2008 Gross Beta 2.30E-02 1.60E-03 3.80E-03

AP L13568-03 1/30/2008 Gross Beta 1.75E-02 1.50E-03 3.40E-03 *

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

114 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L13604-03 2/12/2008 Gross Beta 2.19E-02 1.70E-03 4.OOE-03 AP L13656-03 2/27/2008 Gross Beta 2.24E-02 1.60E-03 3.70E-03 AP L13692-03 3/12/2008 Gross Beta 1.61E-02 1.50E-03 3.70E-03 AP L13731-03 3/26/2008 Gross Beta 1.79E-02 1.60E-03 3.90E-03 AP L13791-03 4/9/2008 Gross Beta 1.61 E-02 1.60E-03 4.OOE-03 AP L13840-03 4/23/2008 Gross Beta 1.74E-02 1.40E-03 3.20E-03 AP L13851-03 3/26/2008 AcTh-228 2.10E-04 9.20E-04 3.80E-03 AP L13851-03 3/26/2008 Ag-108m 0.OOE+00 1.80E-04 7.30E-04 AP L13851-03 3/26/2008 Ag-1 10m -3.50E-04 4.30E-04 2. 1OE-03 AP L13851-03 3/26/2008 Ba-140 2.50E-02 1.80E-02 6.OOE-02 AP L13851-03 3/26/2008 Be-7 1.23E-01 1.40E-02 2.20E-02 AP L13851-03 3/26/2008 Ce-I141 5.OOE-04 1.1OE-03 3.90E-03 AP L13851-03 3/26/2008 Ce-I144 -1.16E-03 8.OOE-04 3.50E-03 AP L13851-03 3/26/2008 Co-57 -4.OOE-05 1.20E-04 4.60E-04 AP L13851-03 3/26/2008 Co-58 1.20E-04 4.40E-04 1.90E-03 AP L13851-03 3/26/2008 Co-60 -4.OOE-05 3.OOE-04 1.40E-03 AP L13851-03 3/26/2008 Cr-51 4.20E-03 9.80E-03 3.70E-02 AP L13851-03 3/26/2008 Cs-134 3.OOE-04 2.OOE-04 8.20E-04 AP L13851-03 3/26/2008 Cs-137 -2.1 OE-04 2.30E-04 1.1 OE-03 AP L13851-03 3/26/2008 Fe-59 3.50E-03 2.1 OE-03 6.50E-03 AP L13851-03 3/26/2008 1-131 -1.32E-01 6.50E-02 2.90E-01 AP L13851-03 3/26/2008 K-40 6.80E-03 4.1OE-03 1.20E-02 AP L13851-03 3/26/2008 La-140 2.50E-02 1.80E-02 6.OOE-02 AP L13851-03 3/26/2008 Mn-54 -7.OOE-05 3.20E-04 1.40E-03 AP L13851-03 3/26/2008 Nb-95 -1.31 E-03 7.60E-04 4.40E-03 AP L13851-03 3/26/2008 Ru-103 -I. 15E-03 8.30E-04 3.80E-03 AP L13851-03 3/26/2008 Ru- 106 3.OOE-03 2.40E-03 8.10E-03 AP L13851-03 3/26/2008 Sb-124 -9.OOE-04 1.60E-03 8.60E-03 AP L13851-03 3/26/2008 Sb-125 -1.60E-04 6.OOE-04 2.50E-03 AP L13851-03 3/26/2008 Se-75 6.1OE-04 3.40E-04 1.1OE-03 AP L13851-03 3/26/2008 Zn-65 -2.90E-04 6.40E-04 3.1OE-03 AP L13851-03 3/26/2008 Zr-95 -1.58E-03 7.90E-04 4.40E-03 AP L13910-03 5/7/2008 Gross Beta 1.44E-02 1.40E-03 3.20E-03 AP L13955-03 5/20/2008 Gross Beta 1.1OE-02 1.50E-03 4.20E-03 AP L14005-03, 6/4/2008 Gross Beta 1.06E-02 1.1OE-03 2.80E-03 AP L14052-03 6/18/2008 Gross Beta 1.57E-02 1.40E-03 3.40E-03 AP L14107-03 7/2/2008 Gross Beta 1.56E-02 1.40E-03 3.20E-03 AP L14160-03 7/16/2008 Gross Beta 1.63E-02 1.40E-03 3.1OE-03 AP L14184-03 7/2/2008 AcTh-228 5.50E-04 7.40E-04 2.80E-03 AP L14184-03 7/2/2008 Ag-108m 8.OOE-05 1.80E-04 6.80E-04 AP L14184-03 7/2/2008 Ag-I 10n -4.70E-04 4.70E-04 2.OOE-03 AP L14184-03 7/2/2008 Ba-140 6.OOE-03 1.50E-02 6.OOE-02 AP L14184-03 7/2/2008 Be-7 I.25E-01 1.40E-02 2.70E-02 AP L14184-03 7/2/2008 Ce-I141 -2.OOE-04 1.1OE-03 4.30E-03 AP L14184-03 7/2/2008 Ce-144 -4.OOE-04 1.1 OE-03 4.1 OE-03 AP L14184-03 7/2/2008 Co-57 7.OOE-05 1.50E-04 5.40E-04 AP L14184-03 7/2/2008 Co-58 -5.80E-04 4.60E-04 2.20E-03 AP L14184-03 7/2/2008 Co-60 I.OOE-04 2.60E-04 1.1OE-03 AP L14184-03 7/2/2008 Cr-51 -2.40E-02 1.1OE-02 4.80E-02 AP L14184-03 7/2/2008 Cs-134 - 1.20E-04 2.OOE-04 1.1OE-03 AP L14184-03 7/2/2008 Cs-137 -6.OOE-05 2.1 OE-04 8.80E-04 AP L14184-03 7/2/2008 Fe-59 -3.OOE-04 1.80E-03 7.60E-03 AP L14184-03 7/2/2008 1-131 5.1OE-02 6.OOE-02 2.1OE-01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 115

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3)

I AP AP L14184-03 L14184-03 7/2/2008 K-40 7/2/2008 La- 140 0.OOE+00 6.OOE-03 2.20E-03 1.50E-02 9.90E-03 6.OOE-02 I

AP L14184-03 7/2/2008 Mn-54 -8.OOE-05 2.80E-04 1.20E-03 AP AP L14184-03 L14184-03 7/2/2008 Nb-95 7/2/2008 Ru-103 7/2/2008 Ru-106 1.28E-03

-4.OOE-04 I.OOE-04 9.30E-04 7.20E-04 2.10E-03 3.10E-03 3.10E-03 8.40E-03 I

AP L14184-03 AP AP AP L14184-03 L14184-03 L14184-03 7/2/2008 Sb-124 7/2/2008 Sb-125 7/2/2008 Se-75 0.OOE+00

-6.30E-04

-3.80E-04 1.30E-03 5.20E-04 3.10E-04 6.20E-03 2.30E-03 1.30E-03 I

AP L14184-03 7/2/2008 Zn-65 -3.40E-04 6.70E-04 2.90E-03 AP AP L14184-03 L14214-03 7/2/2008 Zr-95 7/30/2008 Gross Beta 0.OOE+00 1.66E-02 1.17E-02 7.60E-04 1.40E-03 1.30E-03 3.20E-03 3.1OE-03 3.40E-03 I

AP L14268-03 8/13/2008 Gross Beta "*

AP AP AP L14317-03 L14364-03 L14422-03 8/27/2008 Gross Beta 9/10/2008 Gross Beta 9/24/2008 Gross Beta 1.331E-02 1.70E-02 1.03E-02 1.40E-03 1.40E-03 1.20E-03 3.50E-03 3.20E-03 3.10E-03

A I

AP L14467-03 9/24/2008 AcTh-228 2.50E-04 7.90E-04 3.10E-03 AP AP L14467-03 L14467-03 9/24/2008 Ag-108m 9/24/2008 Ag-1 I10m 9/24/2008 Ba-140 8.OOE-05

-1.10E-04

-2.20E-03 1.90E-04 1.IOE-04 2.20E-03 7.10E-04 8.10E-04 1.60E-02 I

AP L14467-03 1.40E-02 I

AP L14467-03 9/24/2008 Be-7 9.45E-02 9.60E-03 AP L14467-03 9/24/2008 Ce- 141 -1.21E-03 8.OOE-04 3.20E-03 AP L14467-03 9/24/2008 Ce- 144 -9.OOE-04 1.OOE-03 4. 1OE-03 AP L14467-03 9/24/2008 Co-57 2.OOE-05 1.40E-04 5.1OE-04 AP AP AP L14467-03 L14467-03 L14467-03 9/24/2008 Co-58 9/24/2008 Co-60 9/24/2008 Cr-51

-2.30E-04 1.00E-04 6.30E-03 2.90E-04 2.60E-04 7.20E-03 1.40E-03 1.IOE-03 2.50E-02 I

AP AP AP L14467-03 L14467-03 L14467-03 9/24/2008 Cs-134 9/24/2008 Cs-137 9/24/2008 Fe-59

-7.OOE-05 1.20E-04 1.80E-03 2.OOE-04 2.30E-04 1.20E-03 9.90E-04 8.80E-04 3.80E-03 I

AP L14467-03 9/24/2008 1-131 1.50E-02 1.1OE-02 3.60E-02 AP AP LI14467-03 L14467-03 LI14467-03 9/24/2008 K-40 9/24/2008 La-140 9/24/2008 Mn-54 3.OOE-03

-2.20E-03 1.50E-04 3.10E-03 2.20E-03 3.40E-04 1.1OE-02 1.60E-02 1.30E-03 I

AP AP AP AP L14467-03 L14467-03 L14467-03 9/24/2008 Nb-95 9/24/2008 Ru-103 9/24/2008 Ru-106

-8.40E-04 1.82E-03 7.OOE-04 7.OOE-04 6.20E-04 1.90E-03 3.20E-03 1.60E-03 7.40E-03 I

AP L14467-03 9/24/2008 Sb-124 0.OOE+00 7.20E-04 3.80E-03 AP AP, L14467-03 L14467-03 L14467-03 9/24/2008 Sb-125 9/24/2008 Se-75 9/24/2008 Zn-65

-7.40E-04 4.30E-04

-1.20E-04 5.50E-04 3.50E-04 6.60E-04 2.40E-03 1.20E-03 2.70E-03 I

AP AP AP AP L14467-03 L14490-03 L14542-03 9/24/2008 Zr-95 10/8/2008 Gross Beta 10/22/2008 Gross Beta 2.1OE-04 1.15E-02 1.79E-02 9.20E-04 1.40E-03 1.50E-03 3.50E-03 3.70E-03 3.70E-03 I

AP L14587-03 11/5/2008 Gross Beta 1.79E-02 1.40E-03 3.10E-03 AP AP L14635-03 L14673-03 11/19/2008 Gross Beta 12/3/2008 Gross Beta 12/18/2008 Gross Beta 1.01E-02 1.3 1E-02 2.11E-02 1.20E-03 1.30E-03 1.50E-03 3.1OE-03 3.OOE-03 3.50E-03 I

AP L14730-03 I

AP L14762-03 12/30/2008 Gross Beta 2.74E-02 1.80E-03 3.70E-03 AP L14791-03 12/30/2008 AeTh-228 7.OOE-04 1.10E-03 4.20E-03 AP L14791-03 12/30/2008 Ag-108m 4.00E-05 2.OOE-04 7.50E-04 AP L14791-03 12/30/2008 Ag-I IOm 1.40E-04 2.40E-04 1.OOE-03 AP L14791-03 12/30/2008 Ba-140 -2.20E-03 2.20E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 1.60E-02 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 116

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L14791-03 12/30/2008 Be-7 8.52E-02 9.40E-03 1.30E-02 AP L14791-03 12/30/2008 Ce-141 6.20E-04 6.1OE-04 2.1 OE-03 AP LI14791-03 12/30/2008 Ce-144 8.20E-04 7.90E-04 2.70E-03 AP LI14791-03 12/30/2008 Co-57 -1.30E-04 1.1OE-04 4.30E-04 AP L14791-03 12/30/2008 Co-58 -4.20E-04 3.70E-04 1.80E-03 AP L14791-03 12/30/2008 Co-60 -2.60E-04 3.20E-04 1.60E-03 AP L14791-03 12/30/2008 Cr-51 -5.60E-03 4.90E-03 2.1OE-02 AP L14791-03 12/30/2008 Cs-134 9.OOE-05 1.30E-04 2.50E-04 AP L14791-03 12/30/2008 Cs-137 1.70E-04 2.60E-04 9.60E-04 AP L14791-03 12/30/2008 Fe-59 8.60E-04 9.50E-04 3.60E-03 AP L14791-03 12/30/2008 1-131 -4.20E-03 5.70E-03 2.40E-02 AP L14791-03 12/30/2008 K-40 -4.OOE-04 2.70E-03 1.30E-02 AP L14791-03 12/30/2008 La-140 -2.20E-03 2.20E-03 1.60E-02 AP L14791-03 12/30/2008 Mn-54 9.0OE-05 1.60E-04 6.70E-04 AP L14791-03 12/30/2008 Nb-95 2.80E-04 4.70E-04 1.90E-03 AP L14791-03 12/30/2008 Ru-103 2.90E-04 3.50E-04 1.30E-03 AP L14791-03 12/30/2008 Ru-106 -1.80E-03 1.80E-03 8.80E-03 AP L14791-03 12/30/2008 Sb-124 0.OOE+00 0.OOE+00 1.80E-03 AP L14791-03 12/30/2008 Sb-125 0.OOE+00 6.OOE-04 2.40E-03 AP L14791-03 12/30/2008 Se-75 2.50E-04 2.40E-04 8.30E-04 AP L14791-03 12/30/2008 Zn-65 -1.44E-03 7.40E-04 3.80E-03 AP L14791-03 12/30/2008 Zr-95 -5.90E-04 6.OOE-04 3.OOE-03 AP L13424-04 1/2/2008 Gross Beta 2.02E-02 1.70E-03 4.1OE-03 AP L13503-04 1/16/2008 Gross Beta 2.65E-02 1.80E-03 4.1OE-03 AP L13568-04 1/30/2008 Gross Beta 2.11E-02 1.60E-03 3.70E-03 AP L13604-04 2/12/2008 Gross Beta 2.55E-02 1.90E-03 4.40E-03 AP L13656-04 2/27/2008 Gross Beta 2.19E-02 1.70E-03 4.OOE-03 AP L13692-04 3/12/2008 Gross Beta 1.81E-02 1.70E-03 4.1 OE-03 AP L13731-04 3/26/2008 Gross Beta 1.87E-02 1.70E-03 4.30E-03 AP L13791-04 4/9/2008 Gross Beta 1.65E-02 1.60E-03 3.80E-03 AP L13840-04 4/23/2008 Gross Beta 1.93E-02 1.60E-03 3.60E-03 AP L13851-04 3/26/2008 AeTh-228 -3.OOE-04 1.1OE-03 4.90E-03 AP L13851-04 3/26/2008 Ag- 108m -6.OOE-05 2.1OE-04 8.80E-04 AP L13851-04 3/26/2008 Ag-110m 9.50E-04 4.30E-04 5.20E-04 AP L13851-04 3/26/2008 Ba-140 2.OOE-03 1.90E-02 8.60E-02 AP L13851-04 3/26/2008 Be-7 1.51E-01 1.70E-02 2.90E-02 AP L13851-04 3/26/2008 Ce-141 2.OOE-04 1.20E-03 4.40E-03 AP L13851-04 3/26/2008 Ce-144 9.OOE-04 1.1OE-03 3.90E-03 AP L13851-04 3/26/2008 Co-57 2.60E-04 1.60E-04 5.1OE-04 AP L13851-.04 3/26/2008 Co-58 7.OOE-05 7.30E-04 3.OOE-03 AP L13851-04 3/26/2008 Co-60 3.20E-04 3.50E-04 1.30E-03 AP L13851-04 3/26/2008 Cr-51 4.OOE-03 1.30E-02 4.90E-02 AP L13851-04 3/26/2008 Cs-134 9.OOE-05 1.40E-04 7.60E-04 AP L13851-04 3/26/2008 Cs-137 -3.80E-04 3.30E-04 1.50E-03 AP L13851-04 3/26/2008 Fe-59 -8.OOE-04 1.50E-03 7.80E-03 AP L13851-04 3/26/2008 1-131 -1.03E-01 6.40E-02 2.90E-01 AP L13851-04 3/26/2008 K-40 3.60E-03 5.30E-03 2.OOE-02 AP L13851-04 3/26/2008 La-140 2.OOE-03 1.90E-02 8.60E-02 AP L13851-04 3/26/2008 Mn-54 -4.OOE-05 2.70E-04 1.30E-03 AP L13851-04 3/26/2008 Nb-95 -1.70E-03 1.30E-03 6.50E-03 AP L13851-04 3/26/2008 Ru-103 -6.OOE-04 1.OOE-03 4.40E-03 AP L13851-04 3/26/2008 Ru- 106 -2.70E-03 3.OOE-03 1.40E-02 AP L13851-04 3/26/2008 Sb-124 -1.10E-03 2.50E-03 1.20E-02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 117

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3)

I AP AP L13851-04 L13851-04 3/26/2008 3/26/2008.

Sb-125 Se-75 5.60E-04 9.OOE-04 7.80E-04 4.90E-04 2.80E-03 1.60E-03 I

AP L13851-04 3/26/2008 Zn-65 -1.04E-03 7.80E-04 4.20E-03 AP AP AP L13851-04 L13910-04 L13955-04 3/26/2008 5/7/2008 5/20/2008 Zr-95 Gross Beta 7.00E-04 1.83E-02 1.1OE-03 1.60E-03 1.60E-03 4.10E-03 3.60E-03 4.60E-03

I Gross Beta 1.04E-02

AP AP AP L14005-04 L14052-04 L14107-04 6/4/2008 6/18/2008 7/2/2008 Gross Beta Gross Beta Gross Beta 1.011E-02 1.59E-02 1.26E-02 1.20E-03 1.50E-03 1.40E-03 3.10E-03 3.70E-03 3.40E-03 I

AP L14160-04 7/16/2008 Gross Beta 1.59E-02 1.40E-03 3.30E-03

AP AP AP L14184-04 L14184-04 L14184-04 7/2/2008 7/2/2008 AcTh-228 Ag-108m 2.30E-03 3.30E-04 1.10E-03 2.60E-04 4.40E-04 2.80E-03 8.70E-04 I 7/2/2008 Ag-I 10m -7.70E-04 2.60E-03 AP AP AP L14184-04 LI4184-04 114184-04 7/2/2008 7/2/2008 7/2/2008 Ba-140 Be-7 Ce-141

-1.20E-02 1.21E-01

-1.10E-03 1.20E-02 1.70E-02 1.40E-03

9. I OE-02 3.OOE-02 5.80E-03 I

AP L14184-04 7/2/2008 Ce-144 6.OOE-04 1.30E-03 4.60E-03 AP AP AP LI14184-04 114184-04 L14184-04 7/2/2008 7/2/2008 7/2/2008 Co-57 Co-58 Co-60 2.80E-04

-4.OOE-05

-2.40E-04 1.60E-04

4. 1OE-04 3.70E-04 5.20E-04 2.10E-03 1.90E-03 I

AP AP AP L14184-04 L14184-04 L14184-04 7/2/2008 7/2/2008 7/2/2008 Cr-51 Cs-134 Cs-137

-1.10E-02

-2.40E-04 2.20E-04 1.30E-02 2.50E-04

3. 1OE-04 5.70E-02 1.20E-03 1.20E-03 I

AP L14184-04 7/2/2008 Fe-59 -1.001E-03 2.30E-03 1.10E-02 AP AP AP L14184-04 L14184-04 L14184-04 7/2/2008 7/2/2008 7/2/2008 1-131 K-40 La-140

-3.90E-02 1.50E-03

-1.20E-02 6.30E-02 5.30E-03 1.20E-02 2.90E-01 2.20E-02 9.1OE-02 I

AP AP AP L14184-04 L14184-04 L14184-04 7/2/2008 7/2/2008 7/2/2008 Mn-54 Nb-95 Ru-103 6.90E-04 1.50E-03 1.OOE-03 3.90E-04 I .60E-03 1.LOE-03 1.1OE-03 5.70E-03 4.1OE-03 I

AP L14184-04 7/2/2008 Ru-106 3. 1OE-03 2.80E-03 9.70E-03 AP AP AP LI4184-04 L14184-04 LI14184-04 7/2/2008 7/2/2008 7/2/2008 Sb-124 Sb-125 Se-75

-2.70E-03

2. 1OE-04 0.OOE+00 1.90E-03 8.30E-04 4.40E-04 1.20E-02 3.20E-03 1.70E-03 I

AP AP AP L14184-04 L14184-04 L14214-04 7/2/2008 7/2/2008 7/30/2008 Zn-65 Zr-95 Gross Beta 8.OOE-04

-2.00E-04 1.84E-02 9.80E-04 1.1 OE-03 1.50E-03 3.70E-03 5.OOE-03 3.30E-03

I AP L14268-04 8/13/2008 Gross Beta 1.08E-02 1.40E-03 3.70E-03

AP AP AP L14317-04 L14364-04 LI14422-04 8/27/2008 9/10/2008 9/24/2008 Gross Beta Gross Beta Gross Beta 1.17E-02 1.48E-02 9.50E-03 1.40E-03 1.40E-03 1.20E-03 3.70E-03 3.40E-03 3.30E-03

I AP AP AP LI14467-04 L14467-04 L14467-04 9/24/2008 9/24/2008 9/24/2008 AcTh-228 Ag-108m Ag-I 10m 8.OOE-04

-6.00E-05 1.30E-04 1.20E-03 1.90E-04 4.80E-04 4.40E-03 8.50E-04 2.00E-03 I

AP L14467-04 9/24/2008 Ba-140 -3.50E-03 7. 1OE-03 3.80E-02 AP AP AP L14467-04 L14467-04 L14467-04 9/24/2008 9/24/2008 9/24/2008 Be-7 Ce-141 Ce-144 1.01E-01

-2.20E-04

-5.OOE-04 1.30E-02 9.20E-04 1.1OE-03 2.20E-02 3.50E-03 4.40E-03 I

AP AP AP LI14467-04 L14467-04 LI14467-04 9/24/2008 9/24/2008 9/24/2008 Co-57 Co-58 Co-60

-7.OOE-05

-5.60E-04

-5.00E-05 1.50E-04 5.70E-04 4.00E-04 5.80E-04 2.80E-03 1.90E-03 I

AP LI14467-04 9/24/2008 Cr-51 3.20E-03 8.30E-03 3.10E-02 AP L14467-04 9/24/2008 Cs-134 -8.OOE-05 2.OOE-04 1.1OE-03 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 118

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP LI14467-04 9/24/2008 Cs-137 -2.1 OE-04 3.30E-04. 1.50E-03 AP L14467-04 9/24/2008 Fe-59 2.90E-03 1.40E-03 1.90E-03 AP L14467-04 9/24/2008 1-131 5.OOE-03 1.40E-02 5.50E-02 AP L14467-04 9/24/2008 K-40 1.20E-03 3.30E-03 1.50E-02 AP L14467-04 9/24/2008 La-140 -3.50E-03 7.1OE-03 3.80E-02 AP L14467-04 9/24/2008 Mn-54 -3.30E-04 3.OOE-04 1.60E-03 AP L14467-04 9/24/2008 Nb-95 -1.00E-03 1.1OE-03 5;20E-03 AP L14467-04 9/24/2008 Ru-103 6.80E-04 6.OOE-04 2. 1OE-03 AP LI14467-04 9/24/2008 Ru-106 5.90E-03 2.80E-03 7.20E-03 AP L14467-04 9/24/2008 Sb-124 I.OOE-03 1.00E-03 2.70E-03 AP L14467-04 9/24/2008 Sb-125 8.20E-04 7. 10E-04 2.50E-03 AP LI14467-04 9/24/2008 Se-75 -1.60E-04 3.70E-04 1.50E-03 AP LI14467-04 9/24/2008 Zn-65 -1.IOE-03 8.20E-04 4.40E-03 AP L14467-04 9/24/2008 Zr-95 -1.10E-03 1.20E-03 5.40E-03 AP L14490-04 10/8/2008 Gross Beta 1.12E-02 1.50E-03 4.OOE-03 AP L14542-04 10/22/2008 Gross Beta 1.74E-02 1.60E-03 3.90E-03 AP L14587-04 11/5/2008 Gross Beta 1.68E-02 1.40E-03 3.30E-03 AP L14635-04 11/19/2008 Gross Beta 8.1OE-03 1.20E-03 3.30E-03 AP L14673-04 12/3/2008 Gross Beta 1.36E-02 1.30E-03 3.20E-03 AP L14730-04 12/18/2008 Gross Beta 1.83E-02 1.60E-03 3.80E-03 AP L14762-04 12/30/2008 Gross Beta 2.67E-02 1.80E-03 3.90E-03 AP L14791-04 12/30/2008 AcTh-228 -1.20E-04 5.OOE-04 2.70E-03 AP L14791-04 12/30/2008 Ag-108m - 1.00E-04 2.OOE-04 8.20E-04 AP L14791-04 12/30/2008 Ag-1I Om 4.50E-04 5.60E-04 1.80E-03 AP L14791-04 12/30/2008 Ba-140 2.20E-03 3.80E-03 1.60E-02 AP L14791-04 12/30/2008 Be-7 8.59E-02 9.90E-03 1.40E-02 AP L14791-04 12/30/2008 Ce-141 -7.OOE-04 6.30E-04 2.60E-03 AP L14791-04 12/30/2008 Ce-144 -3.90E-04 9.50E-04 3.70E-03 AP L14791-04 12/30/2008 Co-57 8.00E-05 1.30E-04 4.60E-04 AP L14791-04 12/30/2008 Co-58 2.OOE-05 2.OOE-04 .1OE-03 AP L14791-04 12/30/2008 Co-60 -2.OOE-05 2.1OE-04 1.1OE-03 AP L14791-04 12/30/2008 Cr-51 0.OOE+00 6.20E-03 2.40E-02 AP L14791-04 12/30/2008 Cs-134 -2.OOE-04 2.1OE-04 1.20E-03 AP L14791-04 12/30/2008 Cs-137 2.OOE-04 2.60E-04 9.50E-04 AP L14791-04 12/30/2008 Fe-59 1.00E-03 1.20E-03 4.70E-03 AP L14791-04 12/30/2008 1-131 0.OOE+00 5.70E-03 2.30E-02 AP L14791-04 12/30/2008 K-40 -5.OOE-04 3.90E-03 1.70E-02 AP L14791-04 12/30/2008 La-140 2.20E-03 3.80E-03 1.60E-02 AP L14791-04 12/30/2008 Mn-54 -2.OOE-05 3.1OE-04 1.30E-03 AP L14791-04 12/30/2008 Nb-95 -1.04E-03 5.80E-04 3.20E-03 AP L14791-04 12/30/2008 Ru-103 1.60E-04 4.80E-04 1.90E-03 AP L14791-04 12/30/2008 Ru-106 -3.1 OE-03 2.70E-03 1.20E-02 AP L14791-04 12/30/2008 Sb-124 -2.20E-03 1.60E-03 8.70E-03 AP L14791-04 12/30/2008 Sb-125 -6.20E-04 4.90E-04 2.30E-03 AP L14791-04 12/30/2008 Se-75 2.1 OE-04 3.1OE-04 .1OE-03 AP L14791-04 12/30/2008 Zn-65 0.OOE+00 8.60E-04 3.60E-03 AP L14791-04 12/30/2008 Zr-95 3.70E-04 6.80E-04 2.70E-03 AP L13424-05 1/2/2008 Gross Beta 1.94E-02 1.60E-03 4.OOE-03 AP L13503-05 1/16/2008 Gross Beta 2.44E-02 1.70E-03 4.OOE-03 AP L13568-05 1/30/2008 Gross Beta 2.16E-02 1.60E-03 3.50E-03 AP L13604-05 2/13/2008 Gross Beta 2.37E-02 1.70E-03 4.OOE-03 AP L13656-05 2/27/2008 Gross Beta 2.34E-02 1.80E-03 4.20E-03 AP L13692-05 3/12/2008 Gross Beta 1.91E-02 1.60E-03 3.80E-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 119

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3)

I AP AP L13731-05 L13791-05 3/26/2008 4/9/2008 Gross Beta Gross Beta 1.86E-02 1.39E-02 1.70E-03 1.60E-03 4.20E-03 4.30E-03 I

AP L13840-05 4/23/2008 Gross Beta 1.63E-02 1.50E-03 3.50E-03 AP AP L13851-05 L13851-05 3/26/2008 3/26/2008 AcTh-228 Ag-108m 1.60E-03 1.001E-04 1.00E-04 1.20E-03 1.70E-04 4.70E-04 4.20E-03 6.40E-04 1.90E-03 I

AP L13851-05 3/26/2008 Ag-110m AP AP AP L13851-05 L13851-05 L13851-05 3/26/2008 3/26/2008 3/26/2008 Ba-140 Be-7 Ce-141 8.OOE-03 1.30E-01

-1.40E-03 1.40E-02 1.50E-02 1.1OE-03 6.1OE-02 2.50E-02 4.50E-03 I

AP L13851-05 3/26/2008 Ce-144 5.80E-04 8.60E-04 3.10E-03 AP AP AP L13851-05 L13851-05 L13851-05 3/26/2008 3/26/2008 3/26/2008 Co-57 Co-58 Co-60

-I.00E-05 6.80E-04

-6.60E-04 1.00E-04 5.50E-04 3.90E-04 3.90E-04 1.90E-03 2.OOE-03 I

AP AP AP L13851-05 L13851-05 L13851-05 3/26/2008 3/26/2008 3/26/2008 Cr-51 Cs-134 Cs-137

-4.60E-03 1.80E-04 3.OOE-05 9.20E-03 1.50E-04 1.80E-04 3.80E-02 2.80E-04 7.90E-04 I

AP L13851-05 3/26/2008 Fe-59 0.OOE+00 9.90E-04 5.20E-03 AP AP AP L13851-05 L13851-05 L13851-05 3/26/2008 3/26/2008 3/26/2008 1-131 K-40 La-140

-8.70E-02 3.80E-03 8.OOE-03 5.OOE-02 4.OOE-03 1.40E-02 2.40E-01 1.50E-02 6.1OE-02 I

AP AP AP L13851-05 L13851-05 L13851-05 3/26/2008 3/26/2008 3/26/2008 Mn-54 Nb-95 Ru-103

-1.40E-04

-1.10E-03

-4.60E-04 2.OOE-04 1.30E-03 7.30E-04 1.OOE-03 5.80E-03 3.20E-03 I

AP L13851-05 3/26/2008 Ru-106 -1.50E-03 2.40E-03 1.1OE-02 AP AP AP L13851-05 L13851-05 L13851-05 3/26/2008 3/26/2008 3/26/2008 Sb-124 Sb-125 Se-75

-9.30E-04 7.80E-04 1.70E-04 9.30E-04 5.60E-04 3.50E-04 6.80E-03 1.90E-03 1.30E-03 I

AP AP AP L13851-05 L13851-05 L13910-05 3/26/2008 3/26/2008 5/7/2008 Zn-65 Zr-95 Gross Beta

-2.90E-04

-I.64E-03 1.59E-02 8.70E-04 9.50E-04 1.50E-03 3.80E-03 4.90E-03 3.50E-03

k I

AP L13955-05 5/20/2008 Gross Beta- 1.12E-02 1.60E-03 4.50E-03 AP AP AP L14005-05 L14052-05 L14107-05 6/4/2008 6/18/2008 7/2/2008 Gross Beta Gross Beta Gross Beta 1.01E-02 1.44E-02 1.24E-02 1.30E-03 1.50E-03 1.40E-03 3.30E-03 3.80E-03 3.60E-03 I

AP AP AP L14160-05 L14184-05 L14184-05 7/16/2008 7/2/2008 7/2/2008 Gross Beta AcTh-228 Ag-108m 1.52E-02

-1.10E-03 1.70E-04 1.50E-03 1.30E-03 1.90E-04 3.50E-03 5.90E-03 6.90E-04 I

AP L14184-05 7/2/2008 Ag-1 10m 1.16E-03 5.30E-04 1.30E-03 AP L14184-05 7/2/2008 Ba-140 1.10E-02 2.00E-02 8.30E-02 AP AP L14184-05 L14184-05 7/2/2008 7/2/2008 Be-7 Ce- 141 1.30E-01

-I.00E-04 1.60E-02 I.OOE-03 9.1OE-04 2.40E-02

4. 1OE-03 3.70E-03 I

AP AP AP L14184-05 L14184-05 L14184-05 7/2/2008 7/2/2008 7/2/2008 Ce- 144 Co-57 Co-58

-2.30E-04

-3.OOE-05

-2.70E-04 1.10E-04 2.70E-04 4.40E-04 1.90E-03 I

AP L14184-05 7/2/2008 Co-60 -4.OOE-05 3.60E-04 1.70E-03 AP AP AP L14184-05 L14184-05 L14184-05 7/2/2008 7/2/2008.

7/2/2008 Cr-51 Cs-134 1.20E-02 3.001E-05

-1.90E-04 1.20E-02 2.10E-04 2.30E-04 4.40E-02 9.70E-04 1.1OE-03 I

Cs-137 AP AP AP L14184-05 L14184-05 L14184-05 7/2/2008 7/2/2008 7/2/2008 Fe-59 1-131 K-40

-9.OOE-04 8.20E-02

-8.OOE-04 2.40E-03 5.50E-02 2.40E-03 1.1OE-02 1.80E-01 1.30E-02 I

AP L14184-05 7/2/2008 La- 140 1.IOE-02 2.OOE-02 8.30E-02 AP L14184-05 7/2/2008 Mn-54 -4.50E-04 3.1OE-04

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 1.60E-03 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 120 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L14184-05 7/2/2008 Nb-95 1.96E-03 9.80E-04 1.30E-03 AP L14184-05 7/2/2008 Ru-103 -1.20E-03 1.1OE-03 5.OOE-03 AP L14184-05 7/2/2008 Ru-106 0.OOE+00 1.80E-03 8.40E-03 AP L14184-05 7/2/2008 Sb-124 -2.30E-03 1.70E-03 1.10E-02 AP L14184-05 7/2/2008 Sb-125 1.11E-03 6.40E-04 2.OOE-03 AP L14184-05 7/2/2008 Se-75 -7.OOE-05 3.80E-04 1.50E-03 AP L14184-05 7/2/2008 Zn-65 0.OOE+00 6.90E-04 3.20E-03 AP L14184-05 7/2/2008 Zr-95 7.OOE-04 1.1OE-03 4.30E-03 AP L14214-05 7/30/2008 Gross Beta 1.91E-02 1.50E-03 3.50E-03 AP L14268-05 8/13/2008 Gross Beta I.OOE-02 1.40E-03 3.90E-03 AP L14317-05 8/27/2008 Gross Beta 1.35E-02 1.50E-03 4.OOE-03 AP L14364-05 9/10/2008 Gross Beta 1.73E-02 1.50E-03 3.60E-03 AP LI14422-05 9/24/2008 Gross Beta 1.03E-02 1.30E-03 3.50E-03 AP L14467-05 9/24/2008 AcTh-228 -8.50E-04 8.50E-04 4.50E-03 AP LI14467-05 9/24/2008 Ag-108m 6.OOE-05 2.30E-04 8.80E-04 AP L14467-05 9/24/2008 Ag-110m 7.OOE-05 4.20E-04 1.80E-03 AP L14467-05 9/24/2008 Ba-140 0.OOE+00 0.OOE+00 1.1OE-02 AP L14467-05 9/24/2008 Be-7 1.27E-01 1.30E-02 1.50E-02 AP L14467-05 9/24/2008 Ce-141 3.80E-04 7.70E-04 2.80E-03 AP L14467-05 9/24/2008 Ce-144 8.1OE-04 9.90E-04 3.50E-03 AP L14467-05 9/24/2008 Co-57 -5.OOE-05 1.1OE-04 4.60E-04 AP L14467-05 9/24/2008 Co-58 5.40E-04 4.40E-04 1.50E-03 AP L14467-05 9/24/2008 Co-60 -2.40E-04 4.1OE-04 2.OOE-03 AP L14467-05 9/24/2008 Cr-51 7.20E-03 6.60E-03 2.30E-02 AP L14467-05 9/24/2008 Cs-134 -9.00E-05 1.60E-04 9.70E-04 AP L14467-05 9/24/2008 Cs-137 0.OOE+00 1.40E-04 7.OOE-04 AP L14467-05 9/24/2008 Fe-59 -1.30E-03 1.30E-03 7.OOE-03 AP L14467-05 9/24/2008 1-131 -I.OOE-02 1.1OE-02 5.30E-02 AP L14467-05 9/24/2008 K-40 -2.20E-03 2.90E-03 1.60E-02 AP L14467-05 9/24/2008 La-140 0.OOE+00 0.OOE+00 1.1OE-02 AP L14467-05 9/24/2008 Mn-54 -6.OOE-05 3.20E-04 1.40E-03 AP L14467-05 9/24/2008 Nb-95 4.1OE-04 6.80E-04 2.80E-03 AP L14467-05 9/24/2008 Ru-103 0.OOE+00 6.50E-04 2.70E-03 AP L14467-05 9/24/2008 Ru-106 1.80E-03 2.20E-03 8.20E-03 AP L 14467-05 9/24/2008 Sb-124 1.80E-03 1.30E-03 2.50E-03 AP Li14467-05 9/24/2008 Sb-125 -1.90E-04 6.1OE-04 2.60E-03 AP LI14467-05 9/24/2008 Se-75 -2.90E-04 3.30E-04 1.40E-03 AP L14467-05 9/24/2008 Zn-65 0.OOE+00 8.1OE-04 3.60E-03 AP LI14467-05 9/24/2008 Zr-95 -5.1 OE-04 8.40E-04 4.OOE-03 AP L14490-05 10/8/2008 Gross Beta 9.40E-03 1.50E-03 4.20E-03 AP L14542-05 10/22/2008 Gross Beta 1.66E-02 1.60E-03 4.1 OE-03 AP L14587-05 11/5/2008 Gross Beta 1.91E-02 1.50E-03 3.50E-03 AP L14635-05 11/19/2008 Gross Beta 7.1OE-03 1.30E-03 3.50E-03 AP L14673-05 12/3/2008 Gross Beta 1.48E-02 1.40E-03 3.40E-03 AP L114730-05 12/18/2008 Gross Beta 2.05E-02 1.60E-03 3.70E-03 AP L14762-05 12/30/2008 Gross Beta 2.50E-02 1.80E-03 4.OOE-03 AP L14791-05 12/30/2008 AcTh-228 -9.OOE-05 6.80E-04 2.90E-03 AP L14791-05 12/30/2008 Ag- 108m -4.OOE-05 1.80E-04 7.1OE-04 AP L14791-05 12/30/2008 Ag-1 10m 6.30E-04 3.60E-04 1.1OE-03 AP L14791-05 12/30/2008 Ba-140 1.40E-03 3.20E-03 1.30E-02 AP L14791-05 12/30/2008 Be-7 7.3 1E-02 9.1OE-03 1.90E-02 AP L14791-05 12/30/2008 Ce-I141 -1.23E-03 6.1OE-04 2.60E-03 AP L14791-05 12/30/2008 Ce-144 -6.80E-04 7.90E-04 3.20E-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 121

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 S SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3) I AP AP L14791-05 L14791-05 12/30/2008 12/30/2008 Co-57 Co-58 1.00E-04

-4.30E-04 1.30E-04 5.00E-04 4.50E-04 2.10E-03 I

AP L14791-05 12/30/2008 Co-60 -5.70E-04 3.OOE-04 1.50E-03 AP AP AP L14791-05 L14791-05 L14791-05 12/30/2008 12/30/2008 12/30/2008 Cr-51 Cs-134 Cs-137

-4.20E-03

-6.00E-05

-1.70E-04 5.90E-03 1.50E-04 1.80E-04 2.30E-02 7.80E-04 8.50E-04 I

AP AP AP L14791-05 L14791-05 L14791-05 12/30/2008 12/30/2008 12/30/2008 Fe-59 1-131 K-40

-4.30E-04 4.70E-03 2.70E-03 6.40E-04 6.70E-03 3.30E-03 3.40E-03 2.40E-02 1.2013-02 I

AP L14791-05 12/30/2008 La-140 1.40E-03 3.20E-03 1.30E-02 AP AP AP L14791-05 L14791-05 L14791-05 12/30/2008 12/30/2008 12/30/2008 Mn-54 Nb-95 Ru- 103 0.OOE+00

-9.60E-04 1.60E-04 2.60E-04 7.00E-04 6.1OE-04 1.00E-03 3.10E-03 2.30E-03 I

AP AP AP L14791-05 L14791-05 L14791-05 12/30/2008 12/30/2008 12/30/2008 Ru-106 Sb-124 Sb-125 1.00E-03

-9.30E-04

-3.60E-04 2.40E-03 9.30E-04 5.40E-04 8.80E-03 5.00E-03 2.20E-03 I

AP L14791-05 12/30/2008 Se-75 5.OOE-05 3.10E-04 1.10E-03 AP AP AP L14791-05 L14791-05 L13424-06 12/30/2008 12/30/2008 1/3/2008 Zn-65 Zr-95 Gross Beta 9.OOE-05 1.35E-03 1.95E-02 5.90E-04 6.90E-04 1.6013-03 2.40E-03 2.101E-03 3.90E-03

I I

AP L13503-06 1/16/2008 Gross Beta 2.41E-02 1.70E-03 4.10E-03 AP L13568-06 1/30/2008 Gross Beta 2.29E-02 1.5013-03 3.20E-03 AP LI3604-06 2/12/2008 Gross Beta 2.16E-02 1.60E-03 3.90E-03 AP L13656-06 2/27/2008 Gross Beta 1.91E-02 1.50E-03 3.50E-03 AP AP AP L13692-06 L13731-06 L13791-06 3/12/2008 3/26/2008 4/9/2008 Gross Beta Gross Beta Gross Beta 1.45E-02 1.85E-02 1.33E-02 1.50E-03 1.50E-03 1.50E-03 3.70E-03 3.70E-03 3.90E-03 I

I AP L13840-06 4/23/2008 Gross Beta 2.01E-02 1.50E-03 3.20E-03 AP L13851-06 3/26/2008 AcTh-228 1.1OE-03 1.10E-03 3.90E-03 AP L13851-06 3/26/2008 Ag-108m -5.OOE-05 1.90E-04 7.70E-04 AP L13851-06 3/26/2008 Ag-I 10m -1.50E-04 3.90E-04 1.80E-03 AP AP AP L13851-06 L13851-06 L13851-06 3/26/2008 3/26/2008 3/26/2008 Ba-140 Be-7 Ce- 141 1.50E-02 1.18E-01

-6.OOE-04 1.90E-02 1.40E-02 1.00E-03 7.10E-02 2.60E-02 3.90E-03

I AP L13851-06 3/26/2008 Ce-144 I.00E-03 1.10E-03 3.80E-03 AP AP AP L13851-06 L13851-06 L13851-06 3/26/2008 3/26/2008 3/26/2008 Co-57 Co-58 Co-60

-7.00E-05 1.1 OE-04 1.001E-04 1.IOE-04 5.20E-04 3.20E-04 4.40E-04 2.10E-03 1.30E-03 I

AP AP AP L13851-06 L13851-06 L13851-06 3/26/2008 3/26/2008 3/26/2008 Cr-51 Cs-134 Cs-137 2.80E-02 7.OOE-05

-5.OOE-04 1.30E-02 1.80E-04 3.20E-04 4.00E-02 8.40E-04 1.40E-03 I

.AP AP AP L13851-06 L13851-06 L13851-06 3/26/2008 3/26/2008 3/26/2008 Fe-59 1-131 K-40

-7.OOE-04

-7.50E-02

-4.OOE-04 1.70E-03 5.30E-02 3.50E-03 7.90E-03 2.4013-01 1.50E-02 I

AP L13851-06 3/26/2008 La- 140 1.50E-02 1.90E-02 7.10E-02 AP AP AP L13851-06 L13851-06 L13851-06 3/26/2008 3/26/2008 3/26/2008 Mn-54 Nb-95 Ru-103

-5.OOE-05

-1.30E-04

-6.60E-04 2.40E-04 9.90E-04 7.90E-04 1.1OE-03 4.30E-03 3.50E-03 I

AP AP AP L13851-06 L13851-06 L13851-06 3/26/2008 3/26/2008 3/26/2008 Ru-106 Sb-124 Sb-125 2.60E-03 1.70E-03

-1.631E-03 2.1OE-03 1.70E-03 7.4013-04 7.20E-03 6.40E-03 3.3013-03 I

AP L13851-06 3/26/2008 Se-75 1.1 OE-04 3.50E-04 1.30E-03 AP L13851-06 3/26/2008 Zn-65 2.70E-04 7.20E-04

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 2.90E-03 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 122 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L13851-06 3/26/2008 Zr-95 -2.30E-03 1.1 OE-03 5.60E-03 AP L13910-06 5/7/2008 Gross Beta 1.81E-02 1.40E-03 3.20E-03 AP L13955-06 5/20/2008 Gross Beta 1.06E-02 1.50E-03 4.1OE-03 AP L14005-06 6/4/2008 Gross Beta 1.09E-02 1.30E-03 3.40E-03 AP L14052-06 6/18/2008 Gross Beta 1.38E-02 1.50E-03 3.90E-03 AP L14107-06 7/2/2008 Gross Beta 1.44E-02 1.50E-03 3.60E-03 AP L14160-06 7/16/2008 Gross Beta 1.46E 1.50E-03 3.60E-03 AP L14184-06 7/2/2008 AcTh-228 -8.OOE-04 1.30E-03 5.80E-03 AP L14184-06 7/2/2008 Ag-108m -4.50E-04 1.90E-04 9.80E-04 AP L14184-06 7/2/2008 Ag-1 10m I .80E-04 4.90E-04 2.OOE-03 AP L14184-06 7/2/2008 Ba-140 0.OOE+00 1.50E-02 8.OOE-02 AP L14184-06 7/2/2008 Be-7 1.33E-01 1.60E-02 2.50E-02 AP L14184-06 7/2/2008 Ce-141 -6.OOE-04 I.OOE-03 4.30E-03 AP L14184-06 7/2/2008 Ce-144 2.OOE-04 1.20E-03 4.60E-03 AP L14184-06 7/2/2008 Co-57 6.OOE-05 1.20E-04 4.50E-04 AP L14184-06 7/2/2008 Co-58 5.40E-04 6.1OE-04 2.30E-03 AP L14184-06 7/2/2008 Co-60 4.50E-04 4.50E-04 1.60E-03 AP L14184-06 7/2/2008 Cr-51 -1.50E-02 1.40E-02 5.80E-02 AP L14184-06 7/2/2008 Cs-134 -2.OOE-04 2. 1OE-04 1.20E-03 AP L14184-06 7/2/2008 Cs-137 -2.40E-04 2.50E-04 1.20E-03 AP L14184-06 7/2/2008 Fe-59 9.OOE-04 2.30E-03 9.40E-03 AP L14184-06 7/2/2008 1-131 -1.08E-01 5.1OE-02 2.70E-0I AP L14184-06 7/2/2008 K-40 2.60E-03 3.30E-03 1.30E-02 AP L14184-06 7/2/2008 La-140 0.OOE+00 1.50E-02 8.OOE-02 AP L14184-06 7/2/2008 Mn-54 -1.70E-04 3.1OE-04 1.50E-03 AP L14184-06 7/2/2008 Nb-95 1.43E-03 8.20E-04 1.30E-03 AP L14184-06 7/2/2008 Ru-I103 -2.70E-04 7.80E-04 3.50E-03 AP L14184-06 7/2/2008 Ru-106 1.20E-03 3.OOE-03 1.20E-02 AP L14184-06 7/2/2008 Sb- 124 1.1OE-03 1.1OE-03 3.OOE-03 AP L14184-06 7/2/2008 Sb-125 -1.45E-03 7.20E-04 3.40E-03 AP L14184-06 7/2/2008 Se-75 3.50E-04 3.20E-04 1.1OE-03 AP L14184-06 7/2/2008 Zn-65 L.OIE-03 7.50E-04 2.50E-03 AP L14184-06 7/2/2008 Zr-95 5.20E-04 8.80E-04 3.60E-03 AP L14214-06 7/30/2008 Gross Beta 1.90E-02 1.60E-03 3.60E-03 AP L14268-06 8/13/2008 Gross Beta 1.32E-02 1.50E-03 4.OOE-03 AP L14317-06 8/27/2008 Gross Beta 1.75E-02 1.60E-03 3.90E-03 AP L14364-06 9/10/2008 Gross Beta 1.77E-02 1.50E-03 3.60E-03 AP LI14422-06 9/24/2008 Gross Beta 1.15E-02 1.40E-03 3.50E-03 AP LI14467-06 9/24/2008 AeTh-228 -6.OOE-04 1.20E-03 5.30E-03 AP LI14467-06 9/24/2008 Ag-108m 6.1OE-04 2.60E-04 7.30E-04 AP LI14467-06 9/24/2008 Ag-1I Om -1.90E-04 4.90E-04 2.20E-03 AP L14467-06 9/24/2008 Ba-140 0.OOE+00 8.1OE-03 3.80E-02 AP L14467-06 9/24/2008 Be-7 1.05E-01 1.30E-02 1.80E-02 AP L14467-06 9/24/2008 Ce-141 -7.50E-04 9.70E-04 3.80E-03 AP L14467-06 9/24/2008 Ce-144 -1.00E-04 1.20E-03 4.50E-03 AP L14467-06 9/24/2008 Co-57 2.50E-04 1.40E-04 4.50E-04 AP L14467-06 9/24/2008 Co-58 7.OOE-05 4.50E-04 2.OOE-03 AP L14467-06 9/24/2008 Co-60 -2.OOE-04 2.OOE-04 1.40E-03 AP L14467-06 9/24/2008 Cr-51 -3.80E-03 8.40E-03 3.40E-02 AP L14467-06 9/24/2008 Cs-134 -1.10E-04 2.30E-04 1.40E-03 AP L14467-06 9/24/2008 Cs-137 -3.OOE-04 3.40E-04 1.50E-03 AP L14467-06 9/24/2008 Fe-59 -7.OOE-04 1.80E-03 8.OOE-03 AP L14467-06 9/24/2008 1-131 -4.OOE-03 1.40E-02 5.80E-02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 123

Seabrook Nuclear Power station Radiological Environmental Monitoring Program -2008 I SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3) I AP AP L14467-06 Li14467-06 9/24/2008 9/24/2008 K-40 La-140

-4.20E-03 0.OOE+00 4.1 OE-03 8.1OE-03 2.10E-02 3.80E-02 I

AP L14467-06 9/24/2008 Mn-54 3.OOE-05 1.70E-04 8.40E-04 AP AP AP L14467-06 L14467-06 L14467-06 9/24/2008 9/24/2008 9/24/2008 Nb-95 Ru-103 Ru-106 4.60E-04 6.40E-04 1.21E-02 8.40E-04 6.40E-04 4.40E-03 3.30E-03 2.30E-03 1.20E-02 I

AP AP AP L14467-06 L14467-06 L14467-06 9/24/2008 9/24/2008 9/24/2008 Sb-124 Sb-125 Se-75

-2.80E-03

-3.80E-04

-8.OOE-04 2.10E-03 9.OOE-04 3.60E-04 1.1OE-02 3.60E-03 1.70E-03 I

AP L14467-06 9/24/2008 Zn-65 0.OOE+00 6.80E-04 3.10E-03 AP AP AP L14467-06 LI14490-06 L14542-06 9/24/2008 10/8/2008 10/22/2008 Zr-95 Gross Beta Gross Beta

-1.10E-03 9.50E-03 1.69E-02 1.00E-03 1.50E-03 1.60E-03 4.80E-03 4.20E-03 4.20E-03 I

AP AP AP L14587-06 L14635-06 L14673-06 11/5/2008 11/19/2008 12/3/2008 Gross Beta Gross Beta Gross Beta 1.89E-02 7.50E-03 1.36E-02 1.50E-03 1.30E-03 1.40E-03 3.50E-03 3.50E-03 3.40E-03

A I

AP L14730-06 12/18/2008 Gross Beta 1.80E-02 1.50E-03 3.60E-03 AP AP AP L14762-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 Gross Beta AcTh-228 Ag-108m 2.7 1E-02 1.45E-03 0.OOE+00 1.90E-03

9. 1OE-04 1.80E-04 4.10E-03 2.70E-03 7.60E-04

-* I AP AP AP L14791-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 Ag-1 10m Ba-140 Be-7 1.50E-04

-4.70E-03 8.50E-02 3.30E-04 3.30E-03 1.10E-02 1.40E-03 2.30E-02 2.OOE-02 I

AP L14791-06 12/30/2008 Ce-141 -5.1OE-04 6.90E-04 2.80E-03 AP AP AP L14791-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 Ce-I144 Co-57 Co-58

-3.OOE-04 4.OOE-05 7.20E-04 1.1 OE-03 1.50E-04 3.60E-04 4.30E-03 5.40E-04 4.90E-04 I

AP AP AP L14791-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 Co-60 Cr-51 Cs-134

-4.20E-04 3.OOE-04

-8.OOE-05 4.50E-04 5.1OE-03 1.80E-04 2.20E-03 2.1OE-02 1.00E-03 I

AP L14791-06 12/30/2008 Cs-137 -3.80E-04 2.70E-04 1.30E-03 AP AP AP L14791-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 Fe-59 1-131 K-40 6.OOE-04 2.1OE-03

-7.50E-03 I.OOE-03 8.20E-03 3.70E-03 4.40E-03 3.1OE-02 2.20E-02 I

AP AP AP L14791-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 La-140 Mn-54 Nb-95

-4.70E-03 2.OOE-04 1.01E-03 3.30E-03 3.OOE-04 9.60E-04 2.30E-02 1.20E-03 3.40E-03 I

AP L14791-06 12/30/2008 Ru-103 3.70E-04 5.30E-04 2.OOE-03 AP AP AP L14791-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 Ru-106 Sb-124 Sb-125

-3.50E-03

-1.70E-03 1.80E-04 2.70E-03 1.20E-03

7. 1OE-04 1.30E-02 8.OOE-03 2.80E-03 I

AP AP AP L14791-06 L14791-06 L14791-06 12/30/2008 12/30/2008 12/30/2008 Se-75 Zn-65 Zr-95 5.OOE-05

-1.62E-03 1.28E-03 3.OOE-04 9.70E-04 6.40E-04 1.20E-03 4.90E-03 8.70E-04 I

AP LI 3424-07 1/2/2008 Gross Beta 2.08E-02 1.50E-03 3.60E-03

AP L13503-07 1/16/2008 Gross Beta 2.35E-02 1.60E-03 3.70E-03

AP AP L13568-07 L13604-07 1/30/2008 2/13/2008 Gross Beta Gross Beta 1.54E-02 2.13E-02 1.40E-03 1.60E-03 3.20E-03 3.60E-03

I AP L13656-07 2/27/2008 1.87E-02 I

Gross Beta 1.50E-03 3.80E-03 AP L13692-07 3/12/2008 Gross Beta 1.45E-02 1.40E-03 3.60E-03

AP L13731-07 3/26/2008 Gross Beta 1.54E-02 1.40E-03 3.70E-03

AP L13791-07 4/9/2008 Gross Beta 1.42E-02 1.50E-03 3.80E-03

AP L13840-07 4/23/2008 Gross Beta 1.95E-02 1.50E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 3.10E-03

I U

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 124

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L13851-07 3/26/2008 AcTh-228 -2.OOE-04 8.90E-04 3.60E-03 AP L13851-07 3/26/2008 Ag-108m -5.30E-04 1.90E-04 8.60E-04 AP L13851-07 3/26/2008 Ag-110m -2.OOE-04 3.70E-04 1.60E-03 AP L13851-07 3/26/2008 Ba-140 -1.40E-02 I .20E-02 6.20E-02 AP L13851-07 3/26/2008 Be-7 1.27E-01 1.20E-02 2.20E-02 AP L13851-07 3/26/2008 Ce-141 -5.OOE-04 1.1OE-03 4.OOE-03 AP L13851-07 3/26/2008 Ce-144 -9.1 OE-04 9.30E-04 3.70E-03 AP L13851-07 3/26/2008 Co-57 2.OOE-04 1.40E-04 4.60E-04 AP L13851-07 3/26/2008 Co-58 -1.05E-03 4.50E-04 2.20E-03 AP L13851-07 3/26/2008 Co-60 8.OOE-05 2.80E-04 1.10E-03 AP L13851-07 3/26/2008 Cr-51 -5.OOE-03 1.1OE-02 4. 1OE-02 AP L13851-07 3/26/2008 Cs-134 -1.70E-04 1.80E-04 9.50E-04 AP L13851-07 3/26/2008 Cs-137 1.OOE-05 2.1OE-04 8.20E-04 AP L13851-07 3/26/2008 Fe-59 -1.20E-03 1.60E-03 6.80E-03 AP L13851-07 3/26/2008 1-131 9.1OE-02 4.80E-02 1.50E-01 AP L13851-07 3/26/2008 K-40 1.60E-03 3. 1OE-03 1.20E-02 AP L13851-07 3/26/2008 La-140 -1.40E-02 1.20E-02 6.20E-02 AP L13851-07 3/26/2008 Mn-54 -1.90E-04 2.50E-04 1.1OE-03 AP L13851-07 3/26/2008 Nb-95 I.OOE-04 1.OOE-03 3.90E-03 AP L13851-07 3/26/2008 Ru-103 1.OOE-04 7.OOE-04 2.70E-03 AP L13851-07 3/26/2008 Ru-106 -3.80E-03 2.80E-03 1.20E-02 AP L13851-07 3/26/2008 Sb-124 1.60E-03 1.70E-03 6.30E-03 AP L13851-07 3/26/2008 Sb-125 -1.06E-03 6.40E-04 2.60E-03 AP L13851-07 3/26/2008 Se-75 -5.OOE-05 3.60E-04 1.30E-03 AP L13851-07 3/26/2008 Zn-65 -5.20E-04 7.OOE-04 3.OOE-03 AP L13851-07 3/26/2008 Zr-95 -2.1 OE-04 7.1OE-04 3.00E-03 AP L13910-07 5/7/2008 Gross Beta 1.65E-02 1.40E-03 3. 1OE-03 AP L13955-07 5/20/2008 Gross Beta 1.02E-02 1.50E-03 4.00E-03 AP L14005-07 6/4/2008 Gross Beta 8.60E-03 1.20E-03 3.30E-03 AP L14052-07 6/18/2008 Gross Beta 1.44E-02 1.50E-03 3.80E-03 AP L14107-07 7/2/2008 Gross Beta 1.58E-02 1.50E-03 3.60E-03 AP L14160-07 7/16/2008 Gross Beta 1.68E-02 1.50E-03 3.50E-03 AP L14184-07 7/2/2008 AcTh-228 -9.60E-04 7.70E-04 3.70E-03 AP L14184-07 7/2/2008 Ag-108m -1.20E-04 1.50E-04 6.40E-04 AP L14184-07 7/2/2008 Ag-110m -1.20E-04 3.20E-04 1.50E-03 AP L14184-07 7/2/2008 Ba-140 -7.OOE-03 1.20E-02 6.20E-02 AP L14184-07 7/2/2008 Be-7 1.33E-01 1.40E-02 2.10E-02 AP L14184-07 7/2/2008 Ce-I141 -1.50E-03 1.20E-03 5.OOE-03 AP L14184-07 7/2/2008 Ce-144 3.OOE-03 1.20E-03 3.60E-03 AP L14184-07 7/2/2008 Co-57 -2.20E-04 1.1OE-04 5.00E-04 AP L14184-07 7/2/2008 Co-58 -6.OOE-04 5.20E-04 2.40E-03 AP L14184-07 7/2/2008 Co-60 -2.1 OE-04 2.90E-04 1.30E-03 AP L14184-07 7/2/2008 Cr-51 0.OOE+00 1.30E-02 4.80E-02 AP L14184-07 7/2/2008 Cs-134 3.70E-04 1.80E-04 7.50E-04 AP L14184-07 7/2/2008 Cs-137 -9.OOE-05 2.70E-04 1.1OE-03 AP L1,4184-07 7/2/2008 Fe-59 2.70E-03 1.70E-03 5.50E-03 AP L14184-07 7/2/2008 1-131 5.20E-02 6.10E-02 2.20E-01 AP L14184-07 7/2/2008 K-40 2.OOE-03 3.40E-03 1.30E-02 AP L14184-07 7/2/2008 La-140 -7.00E-03 1.20E-02 6.20E-02 AP L14184-07 7/2/2008 Mn-54 -1.60E-04 2.50E-04 1.1OE-03 AP L14184-07 7/2/2008 Nb-95 2.OOE-03 1.20E-03 4.OOE-03 AP L14184-07 7/2/2008 Ru-103 -5.1 OE-04 9.30E-04 3.80E-03 AP L14184-07 7/2/2008 Ru-106 7.OOE-04 2.30E-03 8.70E-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 125

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3)

I AP AP L14184-07 L14184-07 7/2/2008 7/2/2008 Sb-124 Sb-125 1.37E-03

-5.20E-04 9.70E-04 5.20E-04 1.90E-03 2.30E-03 I

AP L14184-07 7/2/2008 Se-75 0.OOE+00 3.70E-04 1.40E-03 AP AP L14184-07 L14184-07 7/2/2008 7/2/2008 Zn-65 Zr-95

- 1.21 E-03

-1.40E-03 1.70E-02 5.40E-04 1.00E-03 1.50E-03 3.OOE-03 4.60E-03 3.50E-03

I AP L14214-07 7/30/2008 Gross Beta I

AP L14268-07 8/13/2008 Gross Beta 9.60E-03 1.40E-03 3.90E-03 AP L14317-07 8/27/2008 Gross Beta 1.86E-02 1.60E-03 3.90E-03 AP L14364-07 9/10/2008 Gross Beta 1.60E-02 1.50E-03 3.60E-03 AP L14422-07 9/24/2008 Gross Beta 1.13E-02 1.40E-03 3.50E-03 AP AP L14467-07 L14467-07 L14467-07 9/24/2008 9/24/2008 9/24/2008 AcTh-228 Ag-108m Ag-110m 0.OOE+00 0.OOE+00 0.OOE+00 9.30E-04 2.OOE-04 3.90E-04 3.80E-03 7.70E-04 1.60E-03 I

AP AP AP AP L14467-07 L14467-07 L14467-07 9/24/2008 9/24/2008 9/24/2008 Ba-140 Be-7 Ce- 141

-2.50E-03 1.13E-01

-3.OOE-05 5.60E-03 1.20E-02 8.40E-04 2.70E-02 2.40E-02

3. IOE-03 I

AP L14467-07 9/24/2008 Ce-144 1.90E-03 l.1OE-03 3.80E-03 AP AP L14467-07 L14467-07 L14467-07 9/24/2008 9/24/2008 9/24/2008 Co-57 Co-58

-1.70E-04 6.60E-04 0.OOE+00 1.30E-04 4.40E-04 2.70E-04 5.50E-04 1.40E-03 1.20E-03 I

AP Co-60 AP AP AP L14467-07 L14467-07 L14467-07 9/24/2008 9/24/2008 9/24/2008 Cr-51 Cs-134 Cs-137 7.1OE-03

-6.OOE-05 3.20E-04 7.90E-03 2.20E-04 2.60E-04 2.80E-02 I.OOE-03 8.90E-04 I

AP L14467-07 9/24/2008 Fe-59 3.OOE-04 1.20E-03 5.OOE-03 AP AP AP L14467-07 L14467-07 L14467-07 9/24/2008 9/24/2008 9/24/2008 1-131 K-40 La- 140 3.40E-02 1.00E-04

-2.50E-03 1.50E-02 3.70E-03 5.60E-03 4.50E-02 1.50E-02 2.70E-02 I

AP AP AP L14467-07 L14467-07 L14467-07 9/24/2008 9/24/2008 9/24/2008 Mn-54 Nb-95 Ru-103

-4.1 OE-04

-5.OOE-04

-7.40E-04 3.40E-04 7.30E-04 7.30E-04 1.50E-03 3.20E-03 3.10E-03 I

AP L14467-07 9/24/2008 Ru-106 -1.90E-03 3.30E-03 1.30E-02 AP AP AP L14467-07 L14467-07 L14467-07 9/24/2008 9/24/2008 9/24/2008 Sb-124 Sb-125 Se-75 0.OOE+00 1.40E-04

-3.40E-04 1.60E-03 7.30E-04 4.30E-04 6.90E-03 2.70E-03 1.70E-03 I

AP AP AP L14467-07 L14467-07 L14490-07 9/24/2008 9/24/2008 10/8/2008 Zn-65 Zr-95 Gross Beta

-3.60E-04 4.80E-04 1.08E-02

7. 1OE-04 7.50E-04 1.50E-03 3.1OE-03 2.90E-03 4.OOE-03

I AP L14542-07 10/22/2008 Gross Beta 2.09E-02 1.70E-03 4. 1OE-03 AP AP AP L14587-07 L14635-07 L14673-07 11/5/2008 11/19/2008 12/3/2008 Gross Beta Gross Beta Gross Beta 1.56E-02 7.60E-03 1.45E-02 1.40E-03 1.20E-03 1.40E-03 3.40E-03 3.50E-03 3.30E-03 I

I AP L14730-07 12/18/2008 Gross Beta 1.94E-02 1.60E-03 3.70E-03 AP L14762-07 12/30/2008 Gross Beta 2.53E-02 1.80E-03 4.OOE-03 AP L14791-07 12/30/2008 AcTh-228 7.OOE-04 I.OOE-03 3.90E-03 AP L14791-07 12/30/2008 Ag-108m -2.OOE-04 1.60E-04 7.40E-04 AP AP AP L14791-07 L14791-07 L14791-07 12/30/2008 12/30/2008 12/30/2008 Ag-1 10m Ba-140 Be-7

-6.OOE-04 0.OOE+00 7.47E-02 4.80E-04 0.OOE+00 9.50E-03 2.30E-03 6.OOE-03 1.60E-02

I AP AP AP L14791-07 L14791-07 L14791-07 12/30/2008 12/30/2008 12/30/2008 Ce- 141 Ce- 144 Co-57 4.40E-04 9.20E-04 4.OOE-05 7.20E-04 8.90E-04 1.1OE-04 2.60E-03 3.1OE-03

4. 1OE-04 I

AP L14791-07 12/30/2008 Co-58 -3.10E-04 3.1OE-04 1.60E-03 AP L14791-07 12/30/2008 Co-60 0.OOE+00 2.OOE-04

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 1.10E-03 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 126

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L14791-07 12/30/2008 Cr-51 1.30E-03 4.20E-03 1.70E-02 AP L1479.1-07 12/30/2008 Cs-134 -1.30E-04 1.80E-04 1.00E-03 AP L14791-07 12/30/2008 Cs-137 2.70E-04 2.90E-04 1.1OE-03 AP L14791-07 12/30/2008 Fe-59 -2.30E-03 1.1 OE-03 6.50E-03 AP L14791-07 12/30/2008 1-131 6.1OE-03 5.70E-03 2.OOE-02 AP L14791-07 12/30/2008 K-40 -5.OOE-04 2.90E-03 1.40E-02 AP L14791-07 12/30/2008 La- 140 0.OOE+00 0.OOE+00 6.OOE-03 AP L14791-07 12/30/2008 Mn-54 -1.00E-04 2.20E-04 1.1OE-03 AP L14791-07 12/30/2008 Nb-95 -3.70E-04 5.50E-04 2.70E-03 AP L14791-07 12/30/2008 Ru-103 -7.90E-04 5.20E-04 2.50E-03 AP L14791-07 12/30/2008 Ru-I106 2.60E-03 2.40E-03 8.60E-03 AP L14791-07 12/30/2008 Sb-124 -8.OOE-04 8.OOE-04 5.60E-03 AP L14791-07 12/30/2008 Sb-125 -3. 1OE-04 4.90E-04 2.20E-03 AP L14791-07 12/30/2008 Se-75 -4.60E-04 2.80E-04 1.30E-03 AP L14791-07 12/30/2008 Zn-65 7.90E-04 6.30E-04 2.103E-03 AP L14791-07 12/30/2008 Zr-95 -2.OOE-04 4.30E-04 2.40E-03 AP L13424-08 1/2/2008 Gross Beta 1.71 E-02 1.50E-03 3.80E-03 AP L13503-08 1/16/2008 Gross Beta 2.02E-02 1.60E-03 3.90E-03 AP L13568-08 1/30/2008 Gross Beta 1.95E-02 1.50E-03 3.40E-03 AP L13604-08 2/12/2008 Gross Beta 1.86E-02 1.60E-03 4.1OE-03 AP L13656-08 2/27/2008 Gross Beta 2.03E-02 1.60E-03 3.70E-03 AP L13692-08 3/12/2008 Gross Beta 1.24E-02 1.40E-03 3.60E-03 AP L13731-08 3/26/2008 Gross Beta 1.60E-02 1.50E-03 3.90E-03 AP L13791-08 4/9/2008 Gross Beta 1.14E-02 1.50E-03 4.20E-03 AP L13840-08 4/23/2008 Gross Beta 1.40E-02 1.40E-03 3.40E-03 AP L13851-08 3/26/2008 AcTh-228 1.68E-03 9.50E-04 2.90E-03 AP L13851-08 3/26/2008 Ag-108m -9.OOE-05 2.OOE-04 8.OOE-04 AP L13851-08 3/26/2008 Ag-110m -3.20E-04 4.60E-04 2.1OE-03 AP L13851-08 3/26/2008 Ba-140 -8.OOE-03 1.30E-02 7.20E-02 AP L13851-08 3/26/2008 Be-7 1.18E-01 1.40E-02 2.50E-02 AP L13851-08 3/26/2008 Ce-141 -1.20E-03 1.1 OE-03 4.20E-03 AP L13851-08 3/26/2008 Ce-144 1.20E-03 1.OOE-03 3.50E-03 AP L13851-08 3/26/2008 Co-57 2.1OE-04 1.OOE-04 3. 1OE-04 AP L13851-08 3/26/2008 Co-58 6.80E-04 4.40E-04 1.40E-03 AP L13851-08 3/26/2008 Co-60 -2.OOE-05 2.OOE-04 1.1OE-03 AP L13851-08 3/26/2008 Cr-51 -5.80E-03 9.30E-03 3.90E-02 AP L13851-08 3/26/2008 Cs-134 -1.50E-04 1.80E-04 9.70E-04 AP L13851-08 3/26/2008 Cs-137 -2.OOE-04 1.60E-04 8.50E-04 AP L13851-08 3/26/2008 Fe-59 -2.70E-03 1.60E-03 8.70E-03 AP L13851-08 3/26/2008 1-131 -6.OOE-03 4.50E-02 1.80E-01 AP L13851-08 3/26/2008 K-40 2.30E-03 3.60E-03 1.40E-02 AP L13851-08 3/26/2008 La-140 -8.OOE-03 1.30E-02 7.20E-02 AP L13851-08 3/26/2008 Mn-54 -2.60E-04 2.70E-04 1.30E-03 AP L13851-08 3/26/2008 Nb-95 6.OOE-04 1.70E-03 6.20E-03 AP L13851-08 3/26/2008 Ru-103 2.20E-04 8.40E-04 3.30E-03 AP L13851-08 3/26/2008 Ru- 106 1.40E-03 2.50E-03 9.40E-03 AP L13851-08 3/26/2008 Sb-124 8.80E-04 8.80E-04 2.40E-03 AP L13851-08 3/26/2008 Sb-125 7.40E-04 6.40E-04 2.20E-03 AP L13851-08 3/26/2008 Se-75 -2.50E-04 2.90E-04 1.20E-03 AP L13851-08 3/26/2008 Zn-65 0.OOE+00 8.60E-04 3.60E-03 AP L13851-08 3/26/2008 Zr-95 -1.17E-03 8.10E-04 4.20E-03 AP L13910-08 5/7/2008 Gross Beta 1.51 E-02 1.40E-03 3.40E-03 AP L13955-08 5/20/2008 Gross Beta 9.40E-03 1.60E-03 4.40E-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 127

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

I AP L14005-08 6/4/2008 Gross Beta 9.1 OE-03 1.IOE-03 3.OOE-03 *k AP AP AP L14052-08 L14107-08 L14160-08 6/18/2008 7/2/2008 7/16/2008 Gross Beta Gross Beta Gross Beta 1.48E-02 1.46E-02 1.62E-02 1.30E-03 1.30E-03 1.30E-03 3.30E-03 3.1OE-03 3.OOE-03 I

1.IOE-04 9.30E-04 4.1OE-03 AP AP AP L14184-08 L14184-08 L14184-08 7/2/2008 7/2/2008 7/2/2008 AcTh-228 Ag-108m Ag-110m 3.10E-04

-4.80E-04 1.90E-04 3.40E-04 5.80E-04 2.1 OE-03 I

AP L14184-08 7/2/2008 Ba-140 1.20E-02 1.20E-02 3.30E-02 AP AP AP L14184-08 L14184-08 L14184-08 7/2/2008 7/2/2008 7/2/2008 Be-7 Ce-141 Ce-144 1.1E-01 1.30E-03

-3.001E-04 1.60E-02 1.30E-03 1.10E-03 2.90E-02 4.70E-03 4.20E-03

r I

-1.40E-04 1.40E-04 5.80E-04 AP AP AP L14184-08 L14184-08 L14184-08 7/2/2008 7/2/2008 7/2/2008 Co-57 Co-58 Co-60 7.20E-04 1.40E-04 5.90E-04 4.30E-04 2.OOE-03 1.80E-03 I

AP L14184-08 7/2/2008 Cr-51 -3.OOE-03 1.001E-02 4.40E-02 AP AP AP L14184-08 L14184-08 L14184-08 7/2/2008 7/2/2008 7/2/2008 Cs-134 Cs-137 Fe-59 1.40E-04

-4. 1OE-04 2.OOE-03 1.60E-04 2.50E-04 2.00E-03 3.60E-04 1.30E-03 7.20E-03 I

7/2/2008 -1.30E-02 6.80E-02 2.80E-01 I

AP L14184-08 1-131 AP L14184-08 7/2/2008 K-40 3.70E-03 3.70E-03 1.40E-02 AP L14184-08 7/2/2008 La-140 1.20E-02 1.20E-02 3.30E-02 AP L14184-08 7/2/2008 Mn-54 4.90E-04 4.00E-04 1.40E-03 AP AP AP L14184-08 L14184-08 L14184-08 7/2/2008 7/2/2008 7/2/2008 Nb-95 Ru-103 Ru-106

-9.OOE-05

-1.30E-03 I.OOE-03 8.20E-04 9.20E-04 2.60E-03 4.20E-03 4.60E-03 1.1OE-02 I

7/2/2008 2.50E-03 1.80E-03 3.40E-03 L14184-08 I

AP Sb-124 AP L14184-08 7/2/2008 Sb-125 8.00E-04 5.70E-04 1.90E-03 AP L14184-08 7/2/2008 Se-75 -1.001E-04 4.OOE-04 1.60E-03 AP L14184-08 7/2/2008 Zn-65 -3.80E-04 3.80E-04 2.80E-03 AP AP AP L14184-08 L14214-08 L14268-08 7/2/2008 7/30/2008 8/13/2008 Zr-95 Gross Beta Gross Beta 3.001E-04 1.76E-02 1.08E-02 1.1OE-03 1.40E-03 1.30E-03 4.70E-03 3.OOE-03 3.30E-03 I

8/27/2008 1.70E-02 1.40E-03 3.40E-03 I

AP L14317-08 Gross Beta AP L14364-08 9/10/2008 Gross Beta 1.45E-02 1.30E-03 3.IOE-03 AP L14422-08 9/24/2008 Gross Beta 1.08E-02 1.20E-03 3.OOE-03 AP L14467-08 9/24/2008 AcTh-228 -1.60E-03 8.30E-04 4.90E-03 AP AP AP L14467-08 L14467-08 L14467-08 9/24/2008 9/24/2008 9/24/2008 Ag-108m Ag-1 10m Ba-140

-1.80E-04 2.70E-04 4.00E-03

2. 1OE-04 5.50E-04 4.OOE-03 9.30E-04 2.1OE-03 1.I OE-02 I

9/24/2008 Be-7 7.20E-02 1.20E-02 2.70E-02

AP AP AP LI14467-08 L14467-08 L14467-08 9/24/2008 9/24/2008 Ce-141 Ce-144

-2.50E-04

-1.80E-03 7.90E-04 1.1OE-03 3.10E-03 4.80E-03 I

AP L14467-08 9/24/2008 Co-57 3.OOE-05 1.40E-04 5.10E-04 AP AP AP L14467-08 L14467-08 L14467-08 9/24/2008 9/24/2008 9/24/2008 Co-58 Co-60 Cr-51

-5. 1OE-04 1.50E-04

-9.20E-03 5.20E-04 3.1OE-04 6.70E-03 2.50E-03 1.30E-03 3.1OE-02 I

-5.30E-04 2.40E-04 1.40E-03 AP AP AP L14467-08 L14467-08 L14467-08 9/24/2008 9/24/2008 9/24/2008 Cs-134 Cs-137 Fe-59

-1.90E-04 3.30E-03 2.40E-04 1.50E-03 1.20E-03 1.80E-03 I

AP L14467-08 9/24/2008 1-131 1.70E-02 1.1OE-02 3.70E-02 AP AP AP L14467-08 L14467-08 L14467-08 9/24/2008 9/24/2008 9/24/2008 K-40 La-140 Mn-54

-9.00E-04 4.OOE-03 3.40E-04 3.60E-03 4.OOE-03 2.80E-04 1.70E-02 1.1OE-02 9.50E-04 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

128

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L14467-08 9/24/2008 Nb-95 -1.60E-04 8.70E-04 3.80E-03 AP L14467-08 9/24/2008 Ru- 103 6.20E-04 6.90E-04 2.50E-03 AP L14467-08 9/24/2008 Ru-106 9.OOE-04 2.30E-03 9.50E-03 AP L14467-08 9/24/2008 Sb-124 -9.OOE-04 1.60E-03 8.50E-03 AP L14467-08 9/24/2008 Sb-125 0.OOE+00 5.30E-04 2.20E-03 AP L14467-08 9/24/2008 Se-75 6.30E-04 4. 1OE-04 1.30E-03 AP L14467-08 9/24/2008 Zn-65 3.30E-04 8.80E-04 3.60E-03 AP L14467-08 9/24/2008 Zr-95 -2.1 OE-03 1.20E-03 5.70E-03 AP L14490-08 10/8/2008 Gross Beta 1.11 E-02 1.30E-03 3.60E-03

AP L14542-08 10/22/2008 Gross Beta 2.OOE-02 1.50E-03 3.50E-03

AP L14587-08 11/5/2008 Gross Beta 1.66E-02 1.30E-03 3.OOE-03

AP L14635-08 11/19/2008 Gross Beta 7.OOE-03 1.1OE-03 3.OOE-03

AP L14673-08 12/3/2008 Gross Beta 1.42E-02 1.20E-03 2.80E-03

AP L14730-08 12/18/2008 Gross Beta 1.79E-02 1.30E-03 3.OOE-03

AP L14762-08 12/30/2008 Gross Beta 2.20E-02 1.60E-03 3.40E-03

AP L14791-08 12/30/2008 AeTh-228 -I.30E-03 8.50E-04 4.30E-03 AP L14791-08 12/30/2008 Ag-108m 2.20E-04 1.1OE-04 3.20E-04 AP L14791-08 12/30/2008 Ag-110m 2.60E-04 3.70E-04 1.40E-03 AP L14791-08 12/30/2008 Ba-140 1.90E-03 1.90E-03 5.20E-03 AP L14791-08 12/30/2008 Be-7 8.50E-02 1.00E-02 1.90E-02

AP L14791-08 12/30/2008 Ce-141 -3.20E-04 4.90E-04 2.OOE-03 AP L14791-08 12/30/2008 Ce-144 -1.70E-04 7.40E-04 2.90E-03 AP L14791-08 12/30/2008 Co-57 -3.90E-05 8.80E-05 3.50E-04 AP L14791-08 12/30/2008 Co-58 5.OOE-05 3.1OE-04 1.30E-03 AP L14791-08 12/30/2008 Co-60 -2.80E-04 2.OOE-04 1.20E-03 AP L14791-08 12/30/2008 Cr-51 -2.30E-03 4.90E-03 2.OOE-02 AP L14791-08 12/30/2008 Cs-134 1.50E-04 1.90E-04 9.20E-04 AP L14791-08 12/30/2008 Cs-137 4.00E-05 2.OOE-04 8.30E-04 AP L14791-08 12/30/2008 Fe-59 9.00E-04 1.20E-03 4.70E-03 AP L14791-08 12/30/2008 1-131 1.30E-03 5.20E-03 2.00E-02 AP L14791-08 12/30/2008 K-40 3.OOE-03 2.80E-03 1.001E-02 AP L14791-08 12/30/2008 La-140 1.90E-03 1.90E-03 5.20E-03 AP L14791-08 12/30/2008 Mn-54 2.OOE-05 1.60E-04 7.50E-04 AP L14791-08 12/30/2008 Nb-95 9.1OE-04 5.90E-04 1.90E-03 AP L14791-08 12/30/2008 Ru-103 - 1.40E-04 5.40E-04 2.20E-03 AP L14791-08 12/30/2008 Ru-106 1.90E-03 1.1OE-03 1.70E-03 AP L14791-08 12/30/2008 Sb-124 -1.26E-03 8.90E-04 5.90E-03 AP L14791-08 12/30/2008 Sb-125 -1.40E-04 3. IOE-04 1.50E-03 AP L14791-08 12/30/2008 Se-75 -3.30E-04 2.70E-04 1.20E-03 AP L14791-08 12/30/2008 Zn-65 -7.20E-04 7.20E-04 3.40E-03 AP L14791-08 12/30/2008 Zr-95 1.011E-03 6.50E-04 2.1 OE-03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 129

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3) I CF CF CF L13424-01 L13503-01 L13568-01 1/2/2008 1/16/2008 1/30/2008 1-131 1-131 1-131 1.05E-02 1.28E-02

-1.20E-03 6.50E-03 6.OOE-03 6.70E-03 2.1OE-02 1.80E-02 2.60E-02 I

5.20E-03 1.70E-02 I

CF L13604-01 2/13/2008 1-131 7.90E-03 CF L13656-01 2/27/2008 1-131 -1.08E-02 6.90E-03 3.OOE-02 CF L13692-01 3/12/2008 1-131 -9.90E-03 4.30E-03 2.20E-02 CF L13731-01 3/26/2008 1-131 1.00E-03 5.OOE-03 1.90E-02 CF CF CF L13791-01 L13840-01 L13910-01 4/9/2008 4/23/2008 5/7/2008 1-131 1-131 1-131

-5.50E-03 5.20E-03

-1.21E-02 5.30E-03 7.20E-03 8.40E-03 2.20E-02 2.60E-02 3.40E-02 I

1.80E-02 I

CF L13955-01 5/20/2008 1-131 2.70E-03 4.90E-03 CF L14005-01 6/4/2008 1-131 -2.30E-03 3.80E-03 1.70E-02 CF L14052-01 6/18/2008 1-131 0.OOE+00 3.40E-03 1.30E-02 CF L14107-01 7/2/2008 1-131 3.20E-03 3.80E-03 1.40E-02 CF CF CF L14160-01 L14214-01 L14268-01 7/16/2008 7/30/2008 8/13/2008 1-131 1-131 1-131 0.OOE+00 0.OOE+00

-2.80E-03 3.20E-03 4.90E-03 6.60E-03 1.30E-02 2.OOE-02 2.70E-02 I

7.50E-03 4.OOE-03 1.30E-02 I

CF L14317-01 8/27/2008 1-131 CF L14364-01 9/10/2008 1-131 -1.60E-03 2.10E-03 9.40E-03 CF L14422-01 9/24/2008 1-131 0.OOE+00 6.40E-03 2.40E-02 CF L14490-01 10/8/2008 1-131 1.45E-02 6.80E-03 2.1OE-02 CF CF CF L14542-01 L14587-01 L14635-01 10/22/2008 11/5/2008 11/19/2008 1-131 1-131 1-131

-4.OOE-04 5.OOE-04

-7.OOE-04 4.40E-03 3.70E-03 3.90E-03 1.80E-02 1.50E-02 1.60E-02 I

1.20E-03 3.30E-03 1.20E-02 I

CF L14673-01 12/3/2008 1-131 CF L14730-01 12/18/2008 1-131 -5.40E-03 4.OOE-03 1.80E-02 CF L14762-01 12/30/2008 1-131 3.40E-03 5.30E-03 2.OOE-02 CF L13424-02 1/2/2008 1-131 3.50E-03 5.1OE-03 1.90E-02 CF CF CF L13503-02 L13568-02 L13604-02 1/16/2008 1/30/2008 2/13/2008 1-131 1-131 1-131

5. 1OE-03 1.33E-02

-1.30E-02 6.OOE-03 6.OOE-03 6.60E-03 2.1OE-02 1.80E-02 2.90E-02 U

2/27/2008 8.10E-03 6.OOE-03 2.OOE-02 I

CF L13656-02 1-131 CF L13692-02 3/12/2008 1-131 -1.35E-02 5.60E-03 2.60E-02 CF L13731-02 3/26/2008 1-131 2.1OE-03 4.90E-03 1.80E-02 CF L13791-02 4/9/2008 1-131 7.70E-03 5.70E-03 1.90E-02 CF CF CF L13840-02 L13910-02 L13955-02 4/23/2008 5/7/2008 5/20/2008 1-131 1-131 1-131 6.50E-03

-1.30E-03

-6.OOE-03 6.30E-03 6.90E-03 4.90E-03 2.20E-02 2.60E-02 2.1OE-02 I

CF L14005-02 6/4/2008 1-131 8.40E-03 3.90E-03 1.20E-02 CF CF L14052-02 L14107-02 6/18/2008 7/2/2008 1-131 1-131 7.1OE-03 5.90E-03 8.40E-03 4.20E-03 4.90E-03 4.30E-03 1.30E-02 1.70E-02 1.30E-02 I

CF L14160-02 7/16/2008 1-131 CF CF CF L14214-02 L14268-02 L14317-02 7/30/2008 8/13/2008 8/27/2008 1-131 1-131 1-131

-1.27E-02 0.OOE+00 5.70E-03 5.80E-03 5.50E-03 5.30E-03 2.80E-02 2.20E-02 1.90E-02 I

9/10/2008 -2.10E-03 2.90E-03 1.20E-02 I

CF L14364-02 1-131 CF L14422-02 9/24/2008 1-131 -1.00E-02 7.OOE-03 3.20E-02 CF L14490-02 10/8/2008 1-131 -1.20E-03 3.40E-03 1.50E-02 CF L14542-02 10/22/2008 1-131 4.70E-03 3.90E-03 1.30E-02 CF CF CF L14587-02 L14635-02 L14673-02 11/5/2008 11/19/2008 12/3/2008 1-131 1-131 1-131

-2.OOE-04

-4.30E-03 3.30E-03 2.80E-03 3.OOE-03 3.60E-03 1.1OE-02 1.50E-02 1.30E-02 U

-2.80E-03 3.30E-03 1.40E-02 I

CF L14730-02 12/18/2008 1-131

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 130 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

CF L14762-02 12/30/2008 1-131 8.1OE-03 5.40E-03 1.80E-02 CF L13424-03 1/2/2008 1-131 -5.1 OE-03 6.70E-03 2.70E-02 CF L13503-03 1/16/2008 1-131 1.00E-02 6.80E-03 2.30E-02 CF L13568-03 1/30/2008 1-131 -2.40E-03 5.80E-03 2.30E-02 CF L13604-03 2/12/2008 1-131 2.80E-03 8.20E-03 3.OOE-02 CF L13656-03 2/27/2008 1-131 -1.38E-02 6.OOE-03 2.70E-02 CF L13692-03 3/12/2008 i-131 0.OOE+00 5.60E-03 2.20E-02 CF L13731-03 3/26/2008 1-131 -4.80E-03 5.20E-03 2.1OE-02 CF L13791-03 4/9/2008 1-131 -7.30E-03 4.OOE-03 1.90E-02 CF L13840-03 4/23/2008 1-131 -3.50E-03 5.60E-03 2.30E-02 CF L13910-03 5/7/2008 1-131 -1.70E-03 7.OOE-03 2.70E-02 CF L13955-03 5/20/2008 1-131 -5.80E-03 4.80E-03 2.OOE-02 CF L14005-03 6/4/2008 1-131 -1.90E-03 3.40E-03 1.50E-02 CF L14052-03 6/18/2008 1-131 -5.70E-03 3.40E-03 1.70E-02 CF L14107-03 7/2/2008 1-131 -7.40E-03 2.90E-03 1.60E-02 CF L14160-03 7/16/2008 1-131 8.OOE-04 3.20E-03 1.30E-02 CF L14214-03 7/30/2008 1-131 -1.30E-03 5.70E-03 2.30E-02 CF L14268-03 8/13/2008 1-131 -6.1 OE-03 6.80E-03 2.90E-02 CF L14317-03 8/27/2008 1-131 3.OOE-03 3.OOE-03 1.1OE-02 CF L14364-03 9/10/2008 1-131 -2.90E-03 2.50E-03 1.1OE-02 CF L14422-03 9/24/2008 1-131 -5.OOE-04 5.30E-03 2.1OE-02 CF LI14490-03 10/8/2008 1-131 4.60E-03 5.20E-03 1.80E-02 CF L14542-03 10/22/2008 1-131 2.20E-03 3.60E-03 1.30E-02 CF L14587-03 11/5/2008 1-131 8.OOE-04 3.30E-03 1.30E-02 CF L14635-03 11/19/2008 1-131 -7.OOE-04 4.1 OE-03 1.60E-02 CF L14673-03 12/3/2008 1-131 9.OOE-04 3.40E-03 1.20E-02 CF L14730-03 12/18/2008 1-131 1.20E-03 3.20E-03 1.30E-02 CF L14762-03 12/30/2008 1-131 -6.10E-03 5.60E-03 2.40E-02 CF L13424-04 1/2/2008 1-131 7.60E-03 6.40E-03 2.20E-02 CF L13503-04 1/16/2008 1-131 9.50E-03 7.80E-03 2.60E-02 CF L13568-04 1/30/2008 1-131 1.54E-02 6.30E-03 1.80E-02 CF L13604-04 2/12/2008 1-131 3.OOE-03 7.1 OE-03 2.70E-02 CF L13656-04 2/27/2008 1-131 4.1OE-03 6.50E-03 2.40E-02 CF L13692-04 3/12/2008 1-131 -1.30E-03 6.1 OE-03 2.40E-02 CF L13731-04 3/26/2008 1-131 -2.1 OE-03 5.OOE-03 2.OOE-02 CF L13791-04 4/9/2008 1-131 -4.50E-03 5.1OE-03 2.1OE-02 CF L13840-04 4/23/2008 1-131 4.OOE-03 7.40E-03 2.70E-02 CF L13910-04 5/7/2008 1-131 1.70E-03 6.60E-03 2.50E-02 CF L13955-04 5/20/2008 1-131 -6.90E-03 6.1 OE-03 2.50E-02 CF L14005-04 6/4/2008 1-131 1.00E-03 4.80E-03 1.80E-02 CF L14052-04 6/18/2008 1-131 2.30E-03 4.OOE-03 1.40E-02 CF L14107-04 7/2/2008 1-131 3.40E-03 4.40E-03 1.60E-02 CF L14160-04 7/16/2008 1-131 2.40E-03 4.OOE-03 1.50E-02 CF L14214-04 7/30/2008 1-131 -5.50E-03 6.20E-03 2.60E-02 CF L14268-04 8/13/2008 1-131 -4.90E-03 6.70E-03 2.90E-02 CF L14317-04 8/27/2008 1-131 3.OOE-04 5.20E-03 2. 1OE-02 CF L14364-04 9/10/2008 1-131 3.90E-03 2.80E-03 9.50E-03 CF L114422-04 9/24/2008 1-131 -3.10E-03 7.30E-03 2.90E-02 CF L14490-04 10/8/2008 1-131 -4.60E-03 4.80E-03 2.20E-02 CF L14542-04 10/22/2008 1-131 5.1OE-03 3.70E-03 1.20E-02 CF L14587-04 11/5/2008 1-131 9.OOE-04 3.60E-03 1.40E-02 CF L14635-04 11/19/2008 1-131 -2.OOE-04 4.30E-03 1.70E-02 CF L14673-04 12/3/2008 1-131 2.OOE-04 4.40E-03 1.70E-02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 131

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3) I CF CF CF L14730-04 L14762-04 L13424-05 12/18/2008 12/30/2008 1/2/2008 1-131 1-131 1-131 5.OOE-03

-5.30E-03 3.60E-03 3.10E-03 6.20E-03 6.OOE-03 1.OOE-02 2.60E-02 2.20E-02 I

CF L13503-05 1/1 6/2008 1-131 -2.60E-03 7.OOE-03 2.70E-02 CF CF L13568-05 L13604-05 1/30/2008 2/13/2008 2/27/2008 1-131 1-131 1.20E-03 7.90E-03

-5.50E-03 5.90E-03 5.90E-03 5.50E-03 2.20E-02 2.OOE-02 2.40E-02 I

CF L13656-05 1-131 CF CF CF L13692-05 L13731-05 L13791-05 3/12/2008 3/26/2008 4/9/2008 1-131 1-131 1-131 6.20E-03 7.80E-03 3.30E-03 6.OOE-03 5.1OE-03 5.90E-03 2.10E-02 1.70E-02 2.10E-02 I

CF L13840-05 4/23/2008 1-131 -3.90E-03 6.80E-03 2.70E-02 CF CF L13910-05 L13955-05 L14005-05 5/7/2008 5/20/2008 6/4/2008 1-131 1-131

-3.OOE-03

-5.OOE-04

-3.30E-03 7.40E-03 4.70E-03 3.90E-03 2.90E-02 1.80E-02 1.60E-02 I

CF 1-131 CF CF CF L14052-05 L14107-05 L14160-05 6/18/2008 7/2/2008 7/16/2008 1-131 1-131 1-131 7.70E-03

-2.70E-03

-4.60E-03 3.70E-03 4.10E-03 4.70E-03 1.1OE-02 1.80E-02

2. 1OE-02 I

CF L14214-05 7/30/2008 1-131 -1.25E-02 7.30E-03 3.20E-02 CF CF CF L14268-05 L14317-05 L14364-05 8/13/2008 8/27/2008 9/10/2008 1-131 1-131 1-131 0.OOE+00

-6.90E-03

-1.80E-03 8.20E-03 4.70E-03 4.10E-03 3.20E-02 2.40E-02 1.60E-02 I

CF CF CF L14422-05 L14490-05 L14542-05 9/24/2008 10/8/2008 10/22/2008 1-131 1-131 1-131 2.40E-03

-7.50E-03 6.30E-03 6.90E-03 5.40E-03 4.OOE-03 2.50E-02 2.40E-02 1.30E-02 U

CF L14587-05 11/5/2008 1-131 -2.70E-03 3.20E-03 1.30E-02 CF CF L14635-05 L14673-05 L14730-05 11/19/2008 12/3/2008 12/18/2008 1-131 1-131 1-131 0.OOE+00

-6.40E-03

2. 1OE-03

4. IOE-03 4.20E-03 4.OOE-03 1.60E-02 1.80E-02 1.50E-02 I

CF CF CF CF L14762-05 L13424-06 L13503-06 12/30/2008 1/3/2008 1/16/2008 1-131 1-131 1-131 2.70E-03 4.30E-03

-1.04E-02 4.70E-03 4.30E-03 6.40E-03 1.80E-02 1.50E-02 2.80E-02 U

CF L13568-06 1/30/2008 1-131 -1.IOE-03 5.20E-03 2.1OE-02 CF CF CF L13604-06 L13656-06 L13692-06 2/12/2008 2/27/2008 3/12/2008 1-131 1-131 1-131

-2.70E-03 0.OOE+00

-3.50E-03 6.90E-03 6.80E-03 5.30E-03 2.70E-02 2.50E-02 2.20E-02 I

CF CF CF L13731-06 L13791-06 L13840-06 3/26/2008 4/9/2008 4/23/2008 1-131 1-131 1-131 0.OOE+00 0.OOE+00

-8.30E-03 4.70E-03 5.80E-03 5.70E-03 1.80E-02 2.20E-02 2.50E-02 I

CF L13910-06 5/7/2008 1-131 6. 1OE-03 6.50E-03 2.30E-02 CF CF CF L13955-06 L14005-06 L14052-06 5/20/2008 6/4/2008 6/18/2008 1-131 1-131 1-131 5.10E-03

-1.IOE-03

-5. 1OE-03 4.60E-03 4.OOE-03 4.40E-03 1.60E-02 1.70E-02 2.OOE-02 I

CF CF CF L14107-06 L14160-06 L14214-06 7/2/2008 7/16/2008 7/30/2008 1-131 1-131 1-131 1.20E-03

-9.OOE-04 1.11 E-02 5.1OE-03 4.70E-03 8.20E-03 2.OOE-02 2.OOE-02 2.80E-02 I

CF L14268-06 8/13/2008 1-131 9.OOE-03 9.OOE-03 3.1OE-02 CF CF CF L14317-06 L14364-06 L14422-06 8/27/2008 9/10/2008 9/24/2008 1-131 1-131 1-131 1.34E-02 0.OOE+00

-4.20E-03 5.30E-03 3.OOE-03 6.50E-03 1.40E-02 1.20E-02 2.80E-02 I

CF CF CF L14490-06 L14542-06 L14587-06 10/8/2008 10/22/2008 11/5/2008 1-131 1-131 1-131 2.60E-03

-8.20E-03

-1.80E-03 6.90E-03 5.70E-03 4.30E-03 2.50E-02 2.50E-02 1.80E-02 I

CF L14635-06 11/19/2008 1-131 3.30E-03 4.80E-03 1.70E-02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

132 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

CF L14673-06 12/3/2008 1-131 -1.30E-03 3.60E-03 1.40E-02 CF L14730-06 12/18/2008 1-131 4.80E-03 4.60E-03 1.60E-02 CF L14762-06 12/30/2008 1-131 8.20E-03 7.OOE-03 2.40E-02 CF L13424-07 1/2/2008 1-131 -8.90E-03 5.90E-03 2.50E-02 CF L13503-07 1/16/2008 1-131 2.40E-03 5.90E-03 2.20E-02 CF L13568-07 1/30/2008 1-131 -3.40E-03 6.70E-03 2.60E-02 CF LI13604-07 2/13/2008 1-131 3.60E-03 5.80E-03 2.1OE-02 CF L13656-07 2/27/2008 1-131 6.20E-03 5.40E-03 1.90E-02 CF L13692-07 3/12/2008 1-131 -2.20E-03 5.50E-03 2.20E-02 CF L13731-07 3/26/2008 1-131 -1.00E-03 3.80E-03 1.60E-02 CF L13791-07 4/9/2008 1-131 1.00E-03 4.70E-03 1.80E-02 CF L13840-07 4/23/2008 1-131 4.60E-03 5.70E-03 2.OOE-02 CF LI13910-07 5/7/2008 1-131 -4.50E-03 7.50E-03 2.90E-02 CF L13955-07 5/20/2008 1-131 -4.OOE-03 5.1OE-03 2.OOE-02 CF L14005-07 6/4/2008 1-131 2.70E-03 5.OOE-03 1.80E-02 CF L14052-07 6/18/2008 1-131 3.20E-03 4.50E-03 1.60E-02 CF L14107-07 7/2/2008 1-131 -2.80E-03 3.80E-03 1.70E-02 CF L14160-07 7/16/2008 1-131 -5.30E-03 3.60E-03 1.90E-02 CF L14214-07 7/30/2008 1-131 7.90E-03 6.90E-03 2.40E-02 CF L114268-07 8/13/2008 1-131 1.70E-03 6.70E-03 2.60E-02 CF L14317-07 8/27/2008 1-131 -1.90E-03 3.1OE-03 1.40E-02 CF L14364-07 9/10/2008 1-131 5.70E-03 3.50E-03 1.1OE-02 CF LI14422-07 9/24/2008 1-131 4.60E-03 8.10E-03 2.80E-02 CF LI14490-07 10/8/2008 1-131 -5.80E-03 5.OOE-03 2.30E-02 CF L14542-07 10/22/2008 1-131 2.30E-03 4.OOE-03 1.40E-02 CF L14587-07 11/5/2008 1-131 -5.90E-03 3.30E-03 1.40E-02 CF L14635-07 11/19/2008 1-131 -6.30E-03 4.50E-03 2.00E-02 CF L14673-07 12/3/2008 1-131 -1.20E-03 3.60E-03 1.50E-02 CF L14730-07 12/18/2008 1-131 5.80E-03 3.30E-03 I.OOE-02 CF L14762-07 12/30/2008 1-131 9.OOE-03 6.70E-03 2.20E-02 CF L13424-08 1/2/2008 1-131 -4.70E-03 5.70E-03 2.30E-02 CF L13503-08 1/16/2008 1-131 9.OOE-03 7.40E-03 2.50E-02 CF L13568-08 1/30/2008 1-131 -2.40E-03 5.90E-03 2.30E-02 CF L13604-08 2/12/2008 1-131 5.70E-03 6.70E-03 2.40E-02 CF L13656-08 2/27/2008 1-131 0.OOE+00 6.30E-03 2.40E-02 CF L13692-08 3/12/2008 1-131 -7.90E-03 5.90E-03 2.50E-02 CF L13731-08 3/26/2008 1-131 -3.20E-03 4.90E-03 2.OOE-02 CF L13791-08 4/9/2008 1-131 -2.80E-03 4.70E-03 1.80E-02 CF L13840-08 4/23/2008 1-131 1.30E-03 5.30E-03 2.OOE-02 CF L13910-08 5/7/2008 1-131 -7.30E-03 7.40E-03 3.OOE-02 CF L13955-08 5/20/2008 1-131 -4.80E-03 4.70E-03 2.00E-02 CF L14005-08 6/4/2008 1-131 8.OOE-04 2.80E-03 1.10E-02 CF L14052-08 6/18/2008 1-131 4.50E-03 3.40E-03 1.10E-02 CF L14107-08 7/2/2008 1-131 -4.20E-03 4.OOE-03 1.80E-02 CF L14160-08 7/16/2008 1-131 6.50E-03 5.OOE-03 1.70E-02 CF L14214-08 7/30/2008 1-131 -2.70E-03 5. 1OE-03 2.20E-02 CF L14268-08 8/13/2008 1-131 0.OOE+00 6.80E-03 2.70E-02 CF L14317-08 8/27/2008 1-131 1.60E-03 4. I OE-03 1.60E-02 CF L14364-08 9/10/2008 1-131 1.40E-03 3.30E-03 1.20E-02 CF L14422-08 9/24/2008 1-131 0.OOE+00 4.00E-03 1.70E-02 CF L14490-08 10/8/2008 1-131 5.OOE-03 5.40E-03 1.90E-02 CF L14542-08 10/22/2008 1-131 6.90E-03 4.20E-03 1.40E-02 CF L14587-08 11/5/2008 1-131 1.60E-03 3.1OE-03 1.1OE-02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 133

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/m3)

STD.DEV.

(pCi/m3)

MDC (pCi/m3) I CF CF CF 9

9 9

L14635-08 11/19/2008 L14673-08 12/3/2008 L14730-08 12/18/2008 1-131 1-131 1-131 3.40E-03

-5.1 OE-03

-3.40E-03 4.30E-03 3.00E-03 1.90E-03 1.50E-02 1.30E-02 1.1OE-02 I

CF 9 L14762-08 12/30/2008 1-131 8.OOE-03 5.OOE-03 1.60E-02 I

I U

I I

I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

134 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH 3 L13641-01 2/25/2008 AcTh-228 -9.OOE+00 3.OOE+01 1.20E+02 FH 3 L13641-01 2/25/2008 Ag- 108m -8.50E+00 6.70E+00 2.70E+01 FH 3 L13641-01 2/25/2008 Ag-1 10m -8.OOE+00 1.30E+01 5.OOE+01 FH 3 L13641-01 2/25/2008 Ba-140 4.OOE+00 1.30E+01 5.1OE+01 FH 3 L13641-01 2/25/2008 Be-7 - 1.09E+02 6.80E+01 2.70E+02 FH 3 L13641-01 2/25/2008 Ce-141 -2.OOE+01 1.30E+01 4.80E+01 FH 3 L13641-01 2/25/2008 Ce-144 -2.60E+01 4.60E+01 1.70E+02 FH 3 L13641-01 2/25/2008 Co-57 -4.60E+00 5.80E+00 2.10E+01 FH 3 L13641-01 2/25/2008 Co-58 5.90E+00 9.30E+00 3.30E+01 FH 3 L13641-01 2/25/2008 Co-60 -1.90E+00 8.40E+00 3.40E+01 FH 3 L13641-01 2/25/2008 Cr-51 3.50E+01 7.20E+0 I 2.50E+02 FH 3 L13641-01 2/25/2008 Cs-134 1.80E+00 6.40E+00 3.OOE+01 FH 3 L13641-01 2/25/2008 Cs-137 2.90E+00 7.40E+00 2.70E+01 FH 3 L13641-01 2/25/2008 Fe-59 3.OOE+00 2.20E+01 7.90E+01 FH 3 L13641-01 2/25/2008 1-131 I.IOE+01 1.70E+01 5.80E+01 FH 3 L13641-01 2/25/2008 K-40 2.39E+03 2.50E+02 5.OOE+02 FH 3 L13641-01 2/25/2008 La- 140 4.OOE+00 1.30E+01 5.10E+01 FH 3 L13641-01 2/25/2008 Mn-54 -8.40E+00 6.50E+00 2.80E+01 FH 3 L13641-01 2/25/2008 Nb-95 -1.13E+01 9.20E+00 3.80E+01 FH 3 L13641-01 2/25/2008 Ru-103 -6.OOE+00 9. I OE+00 3.50E+01 FH 3 L13641-01 2/25/2008 Ru-106 -1.50E+01 8.OOE+01 3.OOE+02 FH 3 L13641-01 2/25/2008 Sb-124 -5.OOE+00 1.70E+01 7.40E+01 FH 3 L13641-01 2/25/2008 Sb-125 -3.OOE+00 2.10E+01 7.80E+01 FH 3 L13641-01 2/25/2008 Se-75 -4.OOE+00 1.10E+01 3.80E+01 FH 3 L13641-01 2/25/2008 Zn-65 -2.90E+-01 2.1OE+01 8.70E+01 FH 3 L13641-01 2/25/2008 Zr-95 -3.OOE+00 1.30E+01 5.I0E+01 FH 3 L13987-01 5/21/2008 AcTh-228 2.90E+01 4.10E+01 1.50E+02 FH 3 L13987-01 5/21/2008 Ag- 108m 8.90E+00 9.1OE+00 3.10E+01 FH 3 L13987-01 5/21/2008 Ag-1 10m -2.30E+01 1.60E+01 6.70E+01 FH 3 L13987-01 5/21/2008 Ba-140 1.IOE+01 3.20E+01 1.30E+02 FH 3 L13987-01 5/21/2008 Be-7 2.OOE+01 1.00E+02 3.90E+02 FH 3 L13987-01 5/21/2008 Ce-141 -I.40E+01 2.OOE+01 7.30E+01 FFH 3 L13987-01 5/21/2008 Ce-I144 -2.80E+01 6.50E+01 2.40E+02 FH 3 L13987-01 5/21/2008 Co-57 1.16E+01 6.80E+00 2.20E+01 FH 3 L13987-01 5/21/2008 Co-58 - 1.00E+01 1.20E+01 5.00E+01 FH 3 L13987-01 5/21/2008 Co-60 6.OOE+00 1.20E+01 4.60E+01 FH 3 L13987-01 5/21/2008 Cr-51 1.60E+02 1.20E+02 3.90E+02 FH 3 L113987-01 5/21/2008 Cs-134 -6.20E+00 8.70E+00 4.80E+01 FH 3 L113987-01 5/21/2008 Cs-137 -2.70E+00 9.90E+00 3.90E+01 FH .3 L13987-01 5/21/2008 Fe-59 -7.70E+0 I 3.40E+01 1.50E+02 FH 3 L13987-01 5/21/2008 1-131 0.OOE+00 4.50E+01 1.70E+02 FH 3 L13987-01 5/21/2008 K-40 2.93E+03 3.40E+02 6.20E+02 FH 3 L13987-01 5/21/2008 La-140 1.1 OE+01 3.20E+01 1.30E+02 FH 3 L13987-01 5/21/2008 Mn-54 1.1OE+01 1.10E+01 3.70E+01 FH 3 L13987-01 5/21/2008 Nb-95 -1.00E+01 1.40E+01 5.90E+01 FH 3 L13987-01 5/21/2008 Ru-103 0.OOE+00 1.60E+01 6.OOE+01 FH 3 L13987-01 5/21/2008 Ru-106 0.OOE+00 1.00E+02 3.80E+02 FH 3 L13987-01 5/21/2008 Sb-124 -9.OOE+00 3.10E+01 1.30E+02 FH 3 L13987-01 5/21/2008 Sb-125 -5.OOE+00 2.90E+01 1.10E+02 FH 3 L13987-01 5/21/2008 Se-75 2.30E+01 1.50E+01 4.80E+01 FH 3 L13987-01 5/21/2008 Zn-65 - 1.90E+01 2.80E+01 1.10E+02 FH 3 L13987-01 5/21/2008 Zr-95 -9.OOE+00 1.90E+01 7.80E+01 FH 3 L14292-01 8/18/2008 AcTh-228 4.30E+01 6.70E+01 2.50E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 135

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH L14292-01 8/18/2008 Ag-108m. 1.70E+01 1.20E+01 4.20E+01 FH L14292-01 8/18/2008 Ag-110m -5.OOE+00 I.1OE+01 5.80E+01 FH L14292-01 8/18/2008 Ba-140 -4.30E+01 2.50E+01 1.50E+02 FH FH L14292-01 8/18/2008 Be-7 L14292-01 8/18/2008 Ce-141 L14292-01 8/18/2008 Ce-144 1.80E+02 2.40E+0 1

-2.50E+01 1.00E+02 1.90E+01 4.80E+01 3.20E+02 6.50E+01 1.90E+02 I

FH.

FH FH FH L14292-01 8/18/2008 Co-57 L14292-01 8/18/2008 Co-58 L14292-01 8/18/2008 Co-60 1.44E+01 3.OOE+00

-2.OOE+00 7.20E+00 1.20E+01 1.50E+01 2.30E+01 4.90E+01 6.80E+01 I

L14292-01 8/18/2008 Cr-51 -1.77E+02 9.60E+01 4.50E+02 I

FH FH L14292-01 8/18/2008 Cs-134 2.04E+01 8.70E+00 3.70E+01 FH L14292-01 8/18/2008 Cs-137 0.OOE+00 1.50E+01 6.OOE+01 FH L14292-01 8/18/2008 Fe-59 -7. 10E+01 3.30E+01 1.80E+02 FH FH FH L14292-01 8/18/2008 1-131 L14292-01 8/18/2008 K-40 L14292-01 8/18/2008 La- 140

-4.OOE+00 3.09E+03

-4.30E+01 2.1OE+01

5. 1OE+02 2.50E+01 8.70E+01 9.20E+02 1.50E+-02 I

FH L14292-01 8/18/2008 Mn-54 -6.1 OE+00 8.80E+00 4.60E+01 FH FH FH L14292-01 8/18/2008 Nb-95 L14292-01 8/18/2008 Ru-103 L14292-01 8/18/2008 Ru-106 8.OOE+00 I.IOE+01 3.60E+01 1.50E+01 1.50E+01 9.50E+01 5.90E+01 5.30E+01 3.80E+02 1

FH FH FH L14292-01 8/18/2008 Sb-124 L14292-01 8/18/2008 Sb-125 L14292-01 8/18/2008 Se-75

-1.90E+01

-3.40E+01 4.OOE+00 1.90E+01 2.90E+01 1.40E+01 1.40E+02 1.30E+02 5.30E+01 I

FH L14292-01 8/18/2008 Zn-65 1.20E+01 3.10E+01 1.30E+02 FH FH FH L14292-01 8/18/2008 Zr-95 L14420-01 9/24/2008 AcTh-228 L14420-01 9/24/2008 Ag-108m 3.40E+01 2.30E+01 3.OOE+00 3.40E+01 4.80E+01 1.1OE+0 1 1.20E+02 1.90E+02 4.40E+01 I

FH FH FH L14420-01 9/24/2008 Ag-I lOm L14420-01 9/24/2008 Ba-140 L14420-01 9/24/2008 Be-7 3.OOE+00

-I.30E+01

-6.OOE+01 1.60E+01 1.30E+01 9.60E+0 1 7.OOE+01 9.60E+01 4.30E+02 I

FH L14420-01 9/24/2008 Ce- 141 -2.30E+01 1.40E+01 6.OOE+01 FH FH FH L14420-01 9/24/2008 Cc- 144 L14420-01 9/24/2008 Co-57 L14420-01 9/24/2008 Co-58

-1. 19E+02 3.OOE+00

-3.20E+01 4.80E+01

7. 1OE+00 2.OOE+01 2.20E+02 2.60E+01 9.10E+01 I

FH FH FH L14420-01 9/24/2008 Co-60 L14420-01 9/24/2008 Cr-51 L14420-01 9/24/2008 Cs-134

-9.OOE+00 5.OOE+01 3.OOE+00 1.40E+01 1.1OE+02 I.10E+01 7.20E+0 1 4.OOE+02 5.40E+0 1 I

FH L14420-01 9/24/2008 Cs-137 -5.OOE+00 1.20E+01 5.40E+01 FH FHI L14420-01 9/24/2008 Fe-59 L14420-01 9/24/2008 1-131 3.60E+01 2.60E+01 2.69E+03 3.20E+01 1.90E+01 4.70E+02

.10OE+02 6.50E+01 7.30E+02

I FH L14420-01 9/24/2008 K-40 FH L14420-01 9/24/2008 La-140 -1.30E+01 1.30E+01 9.60E+01 FH L14420-01 9/24/2008 Mn-54 2.20E+01 1.50E+01 4.90E+0 I FH L14420-01 9/24/2008 Nb-95 -4.20E+01 1.70E+01 8.80E+01 FH L14420-01 9/24/2008 Ru-103 -2.30E+01 1.20E+01 6.OOE+01 FH L14420-01 9/24/2008 Ru-106 -4.OOE+01 1.40E+02 5.60E+02 FH L14420-01 9/24/2008 Sb-124 -4.OOE+01 4.OOE+01 2.1OE+02 FH L14420-01 9/24/2008 Sb-125 5.40E+01 4.OOE+01 1.30E+02 FH L14420-01 9/24/2008 Se-75 1.00E+00 1.40E+01 5.40E+0 I FH L14420-01 9/24/2008 Zn-65 0.OOE+00 4.30E+01 1.70E+02 FH L14420-01 9/24/2008 Zr-95 - 1.40E+01 2.50E+01 1.10E+02 FH L14670-01 11/24/2008 AcTh-228 -2.70E+01 3.20E+01 1.20E+02 FH L14670-01 11/24/2008 Ag-108m 1.70E+00 6.80E+00 2.40E+01

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

I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 136 !

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH 3 L14670-01 11/24/2008 Ag-110m -2.OOE+01 1.20E+01 4.80E+01 FH 3 L14670-01 11/24/2008 Ba-140 0.OOE+00 2.20E+0 I 8.50E+01 FH 3 L14670-01 11/24/2008 Be-7 1.74E+02 7.20E+01 2.20E+02 FH 3 L14670-01 11/24/2008 Ce-141 -1.20E+01 1.30E+01 4.70E+01 FH 3 L14670-01 11/24/2008 Ce-144 -4.50E+01 4.1OE+01 1.50E+02 FH 3 L14670-01 11/24/2008 Co-57 -6. 1OE+00 5.20E+00 1.90E+01 FH 3 L14670-01 11/24/2008 Co-58 -2,12E+01 8.80E+00 3.80E+01 FH 3 L14670-01 11/24/2008 Co-60 5.20E+00 7.1OE+00 2.60E+01 FH 3 L14670-01 11/24/2008 Cr-51 1,41E+02 8.70E+01 2.80E+02 FH 3 L14670-01 11/24/2008 Cs-134 -1.16E+01 6.30E+00 3.50E+01 FH 3 L14670-01 11/24/2008 Cs-137 -6.90E+00 7.30E+00 2.90E+01 FH 3 LI14670-01 11/24/2008 Fe-59 -2.90E+01 2.10E+01 8.50E+01 FH 3 L14670-01 11/24/2008 1-131 -4.50E+01 2.90E+01 1.1 OE+02 FH 3 L14670-01 11/24/2008 K-40 3.54E+03 2.70E+02 4.20E+02

FH 3 L14670-01 11/24/2008 La- 140 0.OOE+00 2.20E+01 8.50E+01 FH 3 L14670-01 11/24/2008 Mn-54 -5.1 OE+00 8.60E+00 3.30E+01 FH 3 L14670-01 11/24/2008 Nb-95 -9.OOE+00 1.1 OE+01 4.40E+01 FH 3 L14670-01 11/24/2008 Ru-103 0.OOE+00 1.00E+01 3.70E+01 FH 3 L14670-01 11/24/2008 Ru-106 1.90E+01 7.30E+01 2.60E+02 FH 3 L14670-01 11/24/2008 Sb-124 -3.OOE+01 1.60E+01 8.OOE+01 FH 3 L14670-01 11/24/2008 Sb-125 -2.30E+01 2.OOE+01 7.70E+01 FH 3 L14670-01 11/24/2008 Se-75 -7.90E+00 9.70E+00 3.60E+01 FH 3 L14670-01 11/24/2008 Zn-65 1.80E+01 2.20E+01 7.60E+01 FH 3 L14670-01 11/24/2008 Zr-95 -2.70E+0 I 1.50E+01 6.20E+01 FH 53 L13641-02 2/26/2008 AcTh-228 -1.00E+01 3.20E+01 1.30E+02 FH 53 L13641-02 2/26/2008 Ag-108m -5.60E+00 7. I OE+00 2.80E+01 FH 53 L1-3641-02 2/26/2008 Ag-110m 7.OOE+00 1.20E+01 4.40E+01 FH 53 L13641-02 2/26/2008 Ba-140 -1.70E+01 1.50E+01 7.I0E+01 FH 53 L13641-02 2/26/2008 Be-7 -3.30E+01 7.40E+01 2.80E+02 FH 53 L13641-02 2/26/2008 Ce-I141 -5.OOE+00 1.40E+01 5.10E+01 FH 53 L13641-02 2/26/2008 Ce-144 -1.50E+01 4.60E+01 1.70E+02 FH 53 L13641-02 2/26/2008 Co-57 1.90E+00 5.60E+00 2.OOE+01 FH 53 L13641-02 2/26/2008 Co-58 -2.OOE+00 1.00E+01 3.90E+01 FH 53 L13641-02 2/26/2008 Co-60 1.20E+01 1.20E+01 4.OOE+01 FH 53 L13641-02 2/26/2008 Cr-51 1.20E+01 8.10E+01 2.90E+02 FH 53 L13641-02 2/26/2008 Cs-134 1.04E+01 7.20E+00 2.60E+01 FH 53 L13641-02 2/26/2008 Cs-137 -8.OOE+00 9.50E+00 3.80E+01 FH 53 L13641-02 2/26/2008 Fe-59 -1.80E+01 1.80E+01 7.70E+01 FH 53 L13641-02 2/26/2008 1-131 1.20E+01 2.10E+01 7.40E+01 FH 53 L13641-02 2/26/2008 K-40 2.75E+03 2.70E+02 3.50E+02 FH 53 L13641-02 2/26/2008 La-140 -1.70E+01 I.50E+01 7.10E+01 FH 53 L13641-02 2/26/2008 Mn-54 5.OOE+00 9.20E+00 3.30E+01 FH 53 L13641-02 2/26/2008 Nb-95 - 1.50E+01 1.1 OE+0 I 4.40E+01 FH 53 L13641-02 2/26/2008 Ru-103 -1.63E+01 9.50E+00 3.90E+01 FH 53 L13641-02 2/26/2008 Ru-106 5.40E+0I 7.90E+01 2.80E+02 FH 53 L13641-02 2/26/2008 Sb-124 -3.OOE+00 1.90E+01 8.00E+01 FH 53 L13641-02 2/26/2008 Sb-125 5.I0E+01 2.30E+01 7.10E+01 FH 53 L13641-02 2/26/2008 Se-75 1.75E+01 8.50E+00 2.70E+01 FH 53 L13641-02 2/26/2008 Zn-65 -7.90E+01 2.70E+01 1.20E+02 FH 53 L13641-02 2/26/2008 Zr-95 -2.10E+01 1.50E+01 6.50E+01 FH 53 LI3987-02 5/28/2008 AcTh-228 1.00E+00 3.80E+01 1.50E+02 FH 53 L13987-02 5/28/2008 Ag-108m -2.OOE-01 9.80E+00 3.60E+01 FH 53 L13987-02 5/28/2008 Ag-1 10m -9.OOE+00 1.50E+01 6.20E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 137

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 S SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I FH FH 53 53 L13987-02 LI13987-02 5/28/2008 5/28/2008 Ba-140 Be-7 1.20E+01 1.07E+02 2.40E+01 9.80E+01 9.20E+0 I 3.40E+02 I

FH 53 L13987-02 5/28/2008 Ce-141 -2.30E+01 1.50E+01 5.90E+01 FH FH FH 53 53 53 L13987-02 L13987-02 L13987-02 5/28/2008 5/28/2008 5/28/2008 Ce- 144 Co-57 Co-5 8

-6.30E+01

-3.20E+00

-9.00E+00 5.30E+01 7.30E+00 1.10E+01 2.OOE+02 2.70E+01 4.70E+01 I

FH FH FH 53 53 53 L13987-02 L13987-02 L13987-02 5/28/2008 5/28/2008 5/28/2008 Co-60 Cr-51 Cs-134

-3.001E+00 1.1OE+02

-5.OOE+00 1.1 OE+0 1 1.10E+02 7.OOE+00 4.70E+01 3.70E+02 3.60E+01 1

FH 53 L13987-02 5/28/2008 Cs-137 -3.OOE+00 I.IOE+01 4.40E+01 FH FH 53 53 L13987-02 L13987-02 5/28/2008 5/28/2008 Fe-59 1-131

-2.90E+01 6.OOE+00 2.40E+01 2.80E+01 3.40E+02 1.00E+02 I.OOE+02 4.70E+02

I FH 53 LI13987-02 5/28/2008 K-40 3.46E+03 FH FH FH 53 53 53 L13987-02 L13987-02 LI13987-02 5/28/2008 5/28/2008 5/28/2008 La-140 Mn-54 Nb-95 1.20E+01

-4.OOE+00 2.OOE+00 2.40E+01 1.101E+01 1.30E+01 9.20E+01 4.30E+01 4.70E+01 U

FH 53 LI13987-02 5/28/2008 Ru-103 -6.OOE+00 1.20E+01 4.80E+01 FH FH FH 53 53 53 L13987-02 L13987-02 L13987-02 5/28/2008 5/28/2008 5/28/2008 Ru-106 Sb-124 Sb-125

-7.OOE+01

-2.80E+01 2.30E+01 1.00E+02 1.60E+01 2.90E+01 4.OOE+02 9.50E+01 1.00E+02 I

FH FH FH 53 53 53 L13987-02 L 13987-02 L13987-02 5/28/2008 5/28/2008 5/28/2008 Se-75 Zn-65 Zr-95 3.OOE+00

-2.40E+0 I 1.20E+01 1.30E+01 2.70E+01 1.70E+01 4.60E+01 1.1OE+02 6.00E+01 I

FH FH FH FH 53 53 53 53 L14292-02 L14292-02 L14292-02 L14292-02 8/21/2008 8/21/2008 8/21/2008 8/21/2008 AcTh-228 Ag-108m Ag-110m Ba-140 5.1OE+OI 1.80E+01 1.20E+01 2.20E+01 7.00E+01 1.10E+01 1.80E+01 2.20E+0 I 2.50E+02 3.40E+01 6.70E+01 8.30E+01 I

FH FH FH 53 53 53 L14292-02 L14292-02 L14292-02 8/21/2008 8/21/2008 8/21/2008 Be-7 Ce- 141 Ce- 144

-8.OOE+01 7.OOE+00

-1.51E+02 1.00E+02 1.80E+01 5.90E+OI 4.50E+02 6.40E+01 2.60E+02 I

FH 53 L14292-02 8/21/2008 Co-57 1.47E+01 8.50E+00 2.80E+01 Fl-I FH FH 53 53 53 L14292-02 L14292-02 L14292-02 8/21/2008 8/21/2008 8/21/2008 Co-58 Co-60 Cr-51 2.40E+01

-I.70E+01

-1.10E+02 1.40E+01 1.90E+01 1.00E+02 4.40E+01 8.90E+01 4.30E+02 I

FH FH FH 53 53 53 L14292-02 L14292-02 L14292-02 8/21/2008 8/21/2008 8/21/2008 Cs-134 Cs-137 Fe-59

-1.00E+00 1.00E+00

-4.20E+01 1.00E+01 1.40E+01 4.20E+01 5.70E+01 5.80E+01 1.80E+02 i

FH 53 L14292-02 8/21/2008 1-131 -I.30E+01 2.10E+01 8.50E+01 FH FH FH 53 53 53 L14292-02 L14292-02 L14292-02 8/21/2008 8/21/2008 8/21/2008 K-40 La-140 Mn-54 3.76E+03 2.20E+01 6.00E+00 5.60E+02 2.20E+OI 1.1 OE+OI 1.00E+03 8.30E+01 4.30E+01 I

FH FH FH 53 53 53 L14292-02 L14292-02 L14292-02 8/21/2008 8/21/2008 8/21/2008 Nb-95 Ru-103 Ru-106

-9.OOE+00 4.OOE+00 7.OOE+01 1.50E+01 1.60E+01 1.30E+02 6.50E+01 5.90E+01 4.80E+02 i

FH 53 L14292-02 8/21/2008 Sb-124 -3.40E+01 4.20E+01 2.1OE+02 FH FH 53 53 L14292-02 L14292-02 L14292-02 8/21/2008 8/21/2008 Sb-125 Se-75 6.40E+01 3.30E+01

-1.10E+01 3.40E+01 1.50E+01 3.60E+01 1.00E+02 4.60E+01 1.50E+02 I

FH 53 8/21/2008 Zn-65 FH FH FH 53 53 53 L14292-02 L14670-02 L14670-02 8/21/2008 12/3/2008 12/3/2008 Zr-95 AcTh-228 Ag-108m

2. 1OE+OI 1.00E+01

-3.80E+00 2.70E+OI 2.90E+01 6.50E+00 9.70E+01 1.00E+02 2.40E+01 1

FH 53 L14670-02 12/3/2008 Ag- I10m 9.OOE+00 I.IOE+01 3.80E+01 FH 53 L14670-02 12/3/2008 Ba-140 3.00E+00 1.40E+01 5.30E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 138 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH 53 L14670-02 12/3/2008 Be-7 1.00E+02 7.40E+0I 2.50E+02 FH 53 L14670-02 12/3/2008 Ce-141 2.20E+01 1.1 OE+0 I 3.50E+01 FH 53 L14670-02 12/3/2008 Ce-144 -2.10E+01 4.OOE+01 1.40E+02 FH 53 L14670-02 12/3/2008 Co-57 9.20E+00 5.20E+00 1.70E+01 FH 53 L14670-02 12/3/2008 Co-58 1.20E+00 7.20E+00 2.70E+01 FH 53 L14670-02 12/3/2008 Co-60 0.OOE+00 6.90E+00 2.70E+01 FH 53 L14670-02 12/3/2008 Cr-51 -1.06E+02 6.60E+01 2.50E+02 FH 53 L14670-02 12/3/2008 Cs-134 -1.13E+01 5.30E+00 2.90E+01 FH 53 L14670-02 12/3/2008 Cs-137 1.36E+01 7.80E+00 2.50E+01 FH 53 L14670-02 12/3/2008 Fe-59 -2.70E+01 1.70E+01 7.OOE+01 FH 53 L14670-02 12/3/2008 1-131 1.00E+01 1.50E+01 5.10E+01 FH 53 L14670-02 12/3/2008 K-40 3.16E+03 2.40E+02 3.20E+02

FH 53 L14670-02 12/3/2008 La-140 3.OOE+00 1.40E+01 5.30E+01 FH 53 L14670-02 12/3/2008 Mn-54 -2.30E+00 8.40E+00 3.10E+01 FH 53 L14670-02 12/3/2008 Nb-95 -7.60E+00 8.40E+00 3.30E+01 FH 53 L14670-02 12/3/2008 Ru-103 -9.30E+00 8.40E+00 3.20E+01 FH 53 L14670-02 12/3/2008 Ru-106 -2.90E+01 8.OOE+01 3.OOE+02 FH 53 L14670-02 12/3/2008 Sb-124 4.OOE+00 1.30E+01 5.20E+01 FH 53 L14670-02 12/3/2008 Sb-125 -6.OOE+00 1.90E+01 7.20E+01 FH 53 L14670-02 12/3/2008 Se-75 -7.80E+00 7.60E+00 2.90E+01 FH 53 L14670-02 12/3/2008 Zn-65 -8.OOE+00 1.90E+01 7.20E+0 I FH 53 L14670-02 12/3/2008 Zr-95 -1.50E+01 1.20E+01 4.90E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 139

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 U

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I HA HA L13989-01 L13989-01 5/28/2008 5/28/2008 AcTh-228 Ag-108m

-7.00E+00 2.70E+01 4.90E+0 I 1.00E+01 1.90E+02 2.90E+01 t

HA L13989-01 5/28/2008 Ag-110m 2.40E+01 1.80E+01 5.90E+01 HA HA L13989-01 L13989-01 5/28/2008 5/28/2008 Ba-140 Be-7 0.00E+00 8.10E+01 1.90E+01 7.60E+01 8.80E+01 2.60E+02 I

HA L13989-01 5/28/2008 Ce-141 4.OOE+00 2.1OE+01 7.30E+01 HA HA HA L13989-01 L13989-01 L13989-01 5/28/2008 5/28/2008 5/28/2008 Ce-144 Co-57 Co-58 5.80E+01 1.30E+00

-3.OOE+00 6.OOE+01 8.20E+00 1.1 OE+0 I 2.1OE+02 2.90E+01 4.50E+01 I

HA L13989-01 5/28/2008 Co-60 2.20E+01 1.30E+01 4.OOE+01 HA HA L13989-01 L13989-01 5/28/2008 5/28/2008 Cr-51 Cs-134 1.70E+02

2. 1OE+00 1.40E+02 9.OOE+00 4.60E+02 4.30E+01 I

HA L13989-01 5/28/2008 Cs-137 -5.OOE+00 1.00E+01 4.20E+01 HA HA HA L13989-01 L13989-01 LI3989-01 5/28/2008 5/28/2008 5/28/2008 Fe-59 1-131 K-40

-6.OOE+00

-7. 1OE+01 1.85E+03 2.80E+01 3.80E+01 3.OOE+02 1.20E+02 1.60E+02 5.90E+02

I I

HA L13989-01 5/28/2008 La- 140 0.OOE+00 1.90E+01 8.80E+01 HA L13989-01 5/28/2008 Mn-54 8.OOE+00 1.20E+01 4.30E+01 HA L13989-01 5/28/2008 Nb-95 -2.OOE+01 1.60E+01 6.80E+0 I HA L13989-01 5/28/2008 Ru-103 8.00E+00 1.40E+01 5.20E+01 HA HA HA L13989-01 L13989-01 L13989-01 5/28/2008 5/28/2008 5/28/2008 Ru-106 Sb-124 Sb-125

-4.00E+01

-2.101E+01

-1.10E+01 1.1OE+02 3.OOE+01 2.70E+0 I 4.30E+02 1.40E+02 1.1OE+02 I

HA L13989-01 5/28/2008 Se-75 1.70E+01 1.40E+01 4.70E+0 I HA HA L13989-01 L13989-01 5/28/2008 5/28/2008 Zn-65 Zr-95 3.50E+01 2.60E+0 I 3.00E+01 2.70E+01 1.00E+02 9.40E+01 3

HA L14668-01 11/20/2008 AcTh-228 1.70E+01 4.OOE+01 1.501E+02 HA HA HA L14668-01 L14668-01 L14668-01 11/20/2008 11/20/2008 11/20/2008 Ag-108m Ag-110m Ba-140

-5.80E+00 1.40E+01 1.90E+01 6.50E+00 6.20E+01 3.20E+01 2.60E+01 2.10E+02 1.30E+02 i

11/20/2008 -7.20E+01 8.80E+01 3.50E+02 I

HA L14668-01 Be-7 HA L14668-01 11/20/2008 Ce- 141 1.80E+01 1.50E+01 5.OOE+01 HA L14668-01 11/20/2008 Ce- 144 9.00E+00 4.OOE+01 1.40E+02 HA L14668-01 11/20/2008 Co-57 3.80E+00 5.1OE+00 1.80E+01 HA HA HA L14668-01 L14668-01 L14668-01 11/20/2008 11/20/2008 11/20/2008 Co-58 Co-60 Cr-51 2.OOE+00 1.70E+01 2.50E+01 1.20E+01 1.00E+01 8.40E+01 4.40E+01 3.1 OE+0 1 3.1OE+02 i

HA L14668-01 11/20/2008 Cs-134 -4.30E+00 6.50E+00 3.70E+01 HA HA L14668-01 L14668-01 11/20/2008 11/20/2008 Cs-137 Fe-59

-9.OOE+00

-1.80E+01 9.00E+00 2.50E+01 3.70E+01 1.10E+02 1.50E+02 i

HA L14668-01 11/20/2008 1-131 4.70E+01 4.40E+01 HA L14668-01 11/20/2008 K-40 1.66E+03 2.80E+02 6.30E+02 HA HA HA L14668-01 L14668-01 L14668-01 11/20/2008 11/20/2008 11/20/2008 La-140 Mn-54 Nb-95 1.90E+01

-5.90E+00

-5.00E+00 3.20E+01 8.60E+00 1.30E+01 1.30E+02 3.60E+01 5.20E+01 I

HA HA L14668-01 L14668-01 11/20/2008 11/20/2008 Ru-103 Ru-106

-4.OOE+00

-1.84E+02 1.1 OE+0 I 8.90E+01 4.20E+01 3.80E+02 I

HA L14668-01 11/20/2008 Sb-124 -2.20E+01 2.40E+01 1.20E+02 HA HA HA L14668-01 L14668-01 L14668-01 11/20/2008 11/20/2008 11/20/2008 Sb-125 Se-75 Zn-65 1.40E+01

-1.86E+01 1.60E+01 2.20E+01 9.70E+00 2.30E+01 7.80E+01 3.90E+01 8.30E+01 i

HA L14668-01 11/20/2008 Zr-95 -3.OOE+00 1.50E+01 6.OOE+01 HA L13989-02 5/28/2008 AcTh-228 4.60E+01 4.50E+01 1.60E+02 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 140 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

HA 54 L13989-02 5/28/2008 Ag-108m -1.14E+01 9.90E+00 4.OOE+01 HA 54 L13989-02 5/28/2008 Ag-110m 4.OOE+00 1.50E+01 5.90E+01 HA 54 L13989-02 5/28/2008 Ba-140 -3.OOE+00 2.30E+01 1.00E+02 HA 54 L13989-02 5/28/2008 Be-7 -1.001E+02 1.00E+02 4.1OE+02 HA 54 L13989-02 5/28/2008 Ce-141 1.001E+01 2.OOE+01 6.90E+01 HA 54 L13989-02 5/28/2008 Ce-144 -6.80E+01 6.OOE+01 2.30E+02 HA 54 L13989-02 5/28/2008 Co-57 6.80E+00 7.90E+00 2.70E+01 HA 54 L13989-02 5/28/2008 Co-58 3.OOE+00 1.40E+01 5.1OE+0I HA 54 L13989-02 5/28/2008 Co-60 -1.40E+01 1.30E+01 5.90E+01 HA 54 L13989-02 5/28/2008 Cr-51 2.30E+02 1.30E+02 4.30E+02 HA 54 L13989-02 5/28/2008 Cs-134 4.80E+00 8.20E+00 3.50E+01 HA 54 L13989-02 5/28/2008 Cs-137 4.OOE+00 1.30E+01 4.90E+01 HA 54 L13989-02 5/28/2008 Fe-59 -1.30E+01 2.60E+01 I. 1OE+02 HA 54 L13989-02 5/28/2008 1-131 5.50E+01 4.I0E+01 1.40E+02 HA 54 L13989-02 5/28/2008 K-40 2.52E+03 3.60E+02 7.30E+02 HA 54 L13989-02 5/28/2008 La- 140 -3.OOE+00 2.30E+01 1.00E+02 HA 54 L13989-02 5/28/2008 Mn-54 -5.OOE+00 1.10E+01 4.50E+01 HA 54 L13989-02 5/28/2008 Nb-95 2.80E+01 1.70E+01 5.50E+01 HA 54 L13989-02 5/28/2008 Ru-103 0.OOE+00 1.30E+01 4.90E+01 HA 54 L13989-02 5/28/2008 Ru-106 -1.50E+02 1.20E+02 4.90E+02 HA 54 L13989-02 5/28/2008 Sb-124 -3.60E+01 3.20E+01 1.50E+02 HA 54 L13989-02 5/28/2008 Sb-125 2.OOE+01 2.40E+01 8.70E+01 HA 54 L13989-02 5/28/2008 Se-75 -6.OOE+00 1.30E+01 5.OOE+01 HA 54 L13989-02 5/28/2008 Zn-65 -6.90E+01 3.20E+01 1.40E+02 HA 54 L13989-02 5/28/2008 Zr-95 -2.OOE+01 2.20E+01 9.20E+01 HA 54 L14668-02 12/3/2008 AcTh-228 -1.60E+01 4.70E+01 1.80E+02 HA 54 L14668-02 12/3/2008 Ag-108m -2.50E+00 8.50E+00 3.20E+01 HA 54 L14668-02 12/3/2008 Ag-110m 1.20E+01 1.40E+01 5.10E+01 HA 54 L14668-02 12/3/2008 Ba-140 2.30E+01 1.60E+01 5.30E+01 HA 54 L14668-02 12/3/2008 Be-7 -I.30E+01 8.10E+01 3. 1OE+02 HA 54 L14668-02 12/3/2008 Ce-141 - 1.40E+01 1.20E+01 4.70E+01 HA 54 L14668-02 12/3/2008 Ce- 144 -5.10E+01 4.50E+01 1.70E+02 HA 54 L14668-02 12/3/2008 Co-57 6.20E+00 5.80E+00 2.OOE+01 HA 54 L14668-02 12/3/2008 Co-58 4.50E+00 8.70E+00 3.20E+01 HA 54 LI14668-02 12/3/2008 Co-60 -1.77E+01 9.90E+00 4.90E+01 HA 54 L14668-02 12/3/2008 Cr-51 4.30E+01 7.90E+01 2.80E+02 HA 54 L14668-02 12/3/2008 Cs-134 5.50E+00 8.90E+00 4.OOE+01 HA 54 LI14668-02 12/3/2008 Cs-137 9.OOE+00 1.00E+01 3.50E+01 HA 54 L14668-02 12/3/2008 Fe-59 -1.001E+01 1.60E+01 7.20E+01 HA 54 L14668-02 12/3/2008 1-131 2.OOE+00 1.60E+01 5.90E+01 HA 54 L14668-02 12/3/2008 K-40 2.32E+03 3.OOE+02 5.60E+02 HA 54 LI14668-02 12/3/2008 La-140 2.30E+01 1.60E+01 5.30E+01 HA 54 L14668-02 12/3/2008 Mn-54 -5.OOE-01 9.70E+00 3.70E+01 HA 54 L14668-02 12/3/2008 Nb-95 -1.001E+01 1.10E+01 4.60E+01 HA 54 LI14668-02 12/3/2008 Ru-103 0.OOE+00 9.50E+00 3.60E+01 HA 54 L14668-02 12/3/2008 Ru-106 1.67E+02 9.20E+01 2.90E+02 HA 54 L14668-02 12/3/2008 Sb-124 -1.70E+01 1.70E+01 8.90E+01 HA 54 L14668-02 12/3/2008 Sb-125 -4.OOE+00 2.60E+01 9.50E+01 HA 54 LI14668-02 12/3/2008 Se-75 -1.28E+01 9.70E+00 3.80E+01 HA 54 LI14668-02 12/3/2008 Zn-65 1.00E+01 2.40E+01 9.OOE+01 HA 54 LI14668-02 12/3/2008 Zr-95 5.OOE+00 1.60E+01 6.OOE+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 141

Program -2008 Seabrook Nuclear Power Station Radiological Environmental Monitoring SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) U MS MS 6

56 L13981-04 L13981-05 5/28/2008 5/28/2008 Sr-90 Sr-90

5. 1OE+01I

-8.80E+01 6.90E+01 6.90E+01 2.30E+02 2.40E+02 I

I I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

142 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

MU L13981-01 5/28/2008 AcTh-228 -!.10E+01 2.70E+01 1.00E+02 MU L13981-01 5/28/2008 Ag-108m 9.30E+00 5.30E+00 1.70E+01 MU L13981-01 5/28/2008 Ag-110m -6.OOE+00 1.00E+01 3.90E+01 MU L13981-01 5/28/2008 Ba-140 3.OOE+00 1.10E+01 4.30E+01 MU L13981-01 5/28/2008 Be-7 7.30E+01 5.70E+01 1.90E+02 MU L13981-01 5/28/2008 Ce-141 2.30E+01 1.10E+01 3.60E+01 MU L13981-01 5/28/2008 Ce-144 -2.20E+01 3.50E+01 1.30E+02 MU L13981-01 5/28/2008 Co-57 -6.OOE-01 4.80E+00 1.70E+01 MU L13981-01 5/28/2008 Co-58 3.20E+00 7.1OE+00 2.50E+01 MU L13981-01 5/28/2008 Co-60 5.40E+00 7.90E+00 2.80E+01 MU L13981-01 5/28/2008 Cr-51 7.OOE+00 6.90E+01 2.40E+02 MU L13981-01 5/28/2008 Cs-134 -7.30E+00 5.30E+00 2.70E+01 MU L13981-01 5/28/2008 Cs-137 -3.OOE+00 6.60E+00 2.50E+01 MU L13981-01 5/28/2008 Fe-59 2.OOE+00 1.70E+01 6.40E+0 1 MU L13981-01 5/28/2008 1-131 8.OOE+00 1.90E+01 6.60E+01 MU L13981-01 5/28/2008 K-40 1.09E+03 1.50E+02 3.40E+02 MU L13981-01 5/28/2008 La- 140 3.OOE+00 1.10E+01 4.30E+01 MU L13981-01 5/28/2008 Mn-54 4.90E+00 7.60E+00 2.70E+01 MU L13981-01 5/28/2008 Nb-95 -5.20E+00 9.50E+00 3.50E+01 MU L13981-01 5/28/2008 Ru-103 -2.30E+00 8.40E+00 3.OOE+01 MU L13981-01 5/28/2008 Ru-106 7.20E+01 6.1OE+OI 2.1OE+02 MU L13981-01 5/28/2008 Sb-124 -3.50E+01 2.OOE+01 8.60E+01 MU L13981-01 5/28/2008 Sb-125 3.90E+01 1.70E+01 5.20E+01 MU L13981-01 5/28/2008 Se-75 7.60E+00 8.1OE+00 2.80E+01 MU L13981-01 5/28/2008 Zn-65 -3.OOE+00 1.50E+01 5.80E+01 MU L13981-01 5/28/2008 Zr-95 -1.30E+0I 1.30E+01 5.20E+01 MU L14667-01 12/3/2008 AcTh-228 3.30E+01 3.90E+01 1.40E+02 MU L14667-01 12/3/2008 Ag-108m 3.60E+00 7.90E+00 3.OOE+01 MU L14667-01 12/3/2008 Ag-110m -4.OOE+00 1.60E+01 6.70E+01 MU L14667-01 12/3/2008 Ba-140 3.OOE+01 3.OOE+01 1.1OE+02 MU L14667-01 12/3/2008 Be-7 1.48E+02 9.40E+0 I 3. 10E+02 MU L14667-01 12/3/2008 Ce-I141 -3.10E+01 1.40E+0I 5.60E+01 MU L14667-01 12/3/2008 Ce- 144 -1.00E+00 4.20E+OI 1.60E+02 MU L14667-01 12/3/2008 Co-57 7.50E+00 5.60E+00 1.90E+01 MU L14667-01 12/3/2008 Co-58 -2.10E+01 1.20E+01 5.50E+01 MU L14667-01 12/3/2008 Co-60 0.OOE+00 1.10E+01 4.70E+01 MU L14667-01 12/3/2008 Cr-51 -6.90E+01 8.OOE+01 3.20E+02 MU L14667-01 12/3/2008 Cs-134 -1.5]E+01 8.60E+00 4.70E+01 MU L14667-01 12/3/2008 Cs-137 1.30E+01 1.40E+01 4.80E+01 MU L14667-01 12/3/2008 Fe-59 -1 .40E+01 2.80E+01 1.20E+02 MU L14667-01 12/3/2008 1-131 2.20E+01 1.60E+OI 5.40E+01 MU L14667-01 12/3/2008 K-40 9.1OE+02 2.70E+02 7.20E+02 MU L14667-01 12/3/2008 La- 140 3.OOE+01 3.OOE+01 1.10E+02 MU L14667-01 12/3/2008 Mn-54 -9.OOE+00 1.1 OE+0 I 4.90E+01 MU L14667-01 12/3/2008 Nb-95 1.80E+01 1.20E+01 3.80E+01 MU L14667-01 12/3/2008 Ru-103 1.40E+0I 1.1 OE+0 I 3.90E+01 MU L14667-01 12/3/2008 Ru-106 9.OOE+01 1.00E+02 3.50E+02 MU L14667-01 12/3/2008 Sb-124 - 1.70E+01 3.40E+01 1.50E+02 MU L14667-01 12/3/2008 Sb-125 5.OOE+00 2.40E+01 9.00E+01 MU L14667-01 12/3/2008 Se-75 -1.50E+00 9.70E+00 3.70E+01 MU L14667-01 12/3/2008 Zn-65 -5.30E+01 2.60E+01 1.30E+02 MU L14667-01 12/3/2008 Zr-95 -5.OOE+00 1.80E+01 7.60E+01 MU L13988-01 5/22/2008 AcTh-228 -1.30E+01 5.60E+01 2.30E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 143

I Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

I MU 9 L13988-01 5/22/2008 Ag-108m 1.30E+01 1.30E+01 4.50E+01 MU MU MU 9

9 9

L13988-01 L13988-01 L13988-01 5/22/2008 5/22/2008 5/22/2008 Ag-1 IOm, Ba-140 Be-7 1.70E+01 4.70E+01

-6.00E+01 2.10E+01 3.30E+01 1.20E+02 7.80E+01 6.30E+01 5.OOE+02 I

I MU 9 L13988-01 5/22/2008 Ce-I141 -3.OOE+00 2.20E+01 8.20E+01 MU 9 L13988-01 5/22/2008 Ce- 144 -4.40E+01 4.70E+01 2.OOE+02 MU 9 L13988-01 5/22/2008 Co-57 2.40E+00 6.40E+00 2.30E+01 MU 9 L13988-01 5/22/2008 Co-58 -1.80E+01 1.30E+01 6.60E+01 MU MU MU 9

9 9

L13988-01 L13988-01 L13988-01 5/22/2008 5/22/2008 5/22/2008 Co-60 Cr-51 Cs-134

-2.OOE+00

-5.OOE+01 1.00E+01 1.40E+01 1.60E+02 1.00E+01 6.40E+01

6. 1OE+02 4.80E+01 I

-8.OOE+00 OE+0 I 5.20E+01 I

MU 9 L13988-01 5/22/2008 Cs-137 1.1 MU 9 L13988-01 5/22/2008 Fe-59 3.90E+01 4.30E+01 1.60E+02 MU 9 L13988-01 5/22/2008 1-131 -2.50E+01 5.90E+01 2.40E+02 MU 9 L13988-01 5/22/2008 K-40 1.24E+03 3.20E+02 6.60E+02

MU MU MU 9

9 9

L13988-01 L13988-01 L13988-01 5/22/2008 5/22/2008 5/22/2008 La-140 Mn-54 Nb-95 4.70E+0 1

-7.OOE+00 2.60E+01 3.30E+01 1.30E+01 1.90E+01 6.30E+01 5.80E+01 6.40E+01 i

1.70E+01 1.30E+01 4.50E+0 1 MU MU MU 9

9 9

L13988-01 L13988-01 L13988-01 5/22/2008 5/22/2008 5/22/2008 Ru-103 Ru-106 Sb-124

-7.OOE+01

-6.10E+01 1.20E+02 3.50E+01 5.1OE+02 2.20E+02 I

MU 9 L13988-01 5/22/2008 Sb-125 -7.20E+01 3.10E+01 1.50E+02 MU 9 L13988-01 5/22/2008 Se-75 1.40E+01 1.30E+01 4.60E+01 MU 9 L13988-01 5/22/2008 Zn-65 -7.90E+01 3.80E+01 1.90E+02 i MU 9 L13988-01 5/22/2008 Zr-95 -7.OOE+00 3.OOE+01 1.20E+02 MU 9 L14648-01 11/19/2008 AcTh-228 3.50E+01 3.50E+01 1.20E+02 MU 9 L14648-01 11/19/2008 Ag-108m -6.90E+00 7.20E+00 2.80E+01 MU 9 L14648-01 11/19/2008 Ag-I 10m -6.OOE+00 1.20E+01 4.70E+01 MU 9 L14648-01 11/19/2008 Ba-140 -6.30E+01 3.90E+01 1.70E+02 MU 9 L14648-01 11/19/2008 Be-7 2.50E+01 9.40E+01 3.40E+02 MU 9 L14648-01 11/19/2008 Ce- 141 1.50E+01 1.80E+01 6.OOE+01 MU 9 L14648-01 11/19/2008 Ce- 144 0.OOE+00 4.90E+01 1.70E+02 5.60E+00 6. 1OE+00 2.1OE+01 MU 11/19/2008 I

9 L14648-01 Co-57 MU 9 L14648-01 11/19/2008 Co-58 -1.40E+01 1.00E+01 4.20E+01 MU 9 L14648-01 11/19/2008 Co-60 4.50E+00 9.OOE+00 3.40E+01 MU 9 L14648-01 11/19/2008 Cr-51 -6.OOE+01 1.001E+02 3.80E+02 MU MU MU 9

9 9

L14648-01 L14648-01 L14648-01 11/19/2008 11/19/2008 11/19/2008 Cs-134 Cs-137 Fe-59

-2.90E+00

-1.10E+01 4.OOE+00 6.90E+00 9.80E+00 2.OOE+01 3.30E+01 3.90E+01 7.60E+01 I

MU 9 L14648-01 11/19/2008 1-131 7.40E+01 5.80E+01 1.90E+02 MU MU 9

9 L14648-01 L14648-01 11/19/2008 11/19/2008 K-40 La-140 9.20E+02

-6.30E+01 1.90E+02 3.90E+01 4.80E+02 1.70E+02 I

MU 9 L14648-01 11/19/2008 Mn-54 -6.70E+00 8.80E+00 3.50E+01 MU MU MU 9

9 9

L14648-01 L14648-01 L14648-01 11/19/2008 11/19/2008 11/19/2008 Nb-95 Ru-103 Ru- 106 1.20E+01

-1.80E+01

-1.22E+02 1.50E+01 1.1OE+01 8.20E+01 5.20E+01 4.70E+01 3.40E+02 I

-7.OOE+00 2.30E+01 1.00E+02 MU MU MU 9

9 9

L14648-01 L14648-01 L14648-01 11/19/2008 11/19/2008 11/19/2008 Sb-124 Sb-125 Se-75 2.50E+01 1.44E+01 2.30E+01 9.70E+00 7.70E+01 3.20E+01 I

MU 9 L14648-01 11/19/2008 Zn-65 -1.30E+01 2.30E+01 9.20E+01 MU MU MU 9

56 56 L14648-01 L13981-02 L13981-02 11/19/2008 5/28/2008 5/28/2008 Zr-95 AcTh-228 Ag-108m

-1.70E+01 3.90E+0 I 4.20E+00 1.50E+01 2.60E+01 5.70E+00 6.60E+01 8.70E+01 2.OOE+01 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

144

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC

. TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

MU 56 L13981-02 5/28/2008 Ag-110m 1.30E+00 9.60E+00 3.50E+01 MU 56 L13981-02 5/28/2008 Ba-140 1.00E+01 1.50E+01 5.60E+01 MU 56 L13981-02 5/28/2008 Be-7 2.80E+01 6.50E+01 2.30E+02 MU 56 L13981-02 5/28/2008 Ce-141 -8.OOE+00 1.00E+01 3.70E+01 MU 56 L13981-02 5/28/2008 Ce-144 -3.OOE+01 3.30E+01 1.20E+02 MU 56 L13981-02 5/28/2008 Co-57 1.40E+00 4.60E+00 1.60E+01 MU 56 L13981-02 5/28/2008 Co-58 -1.11 E+0 I 6.90E+00 2.80E+01 MU 56 L13981-02 5/28/2008 Co-60 -7.70E+00 6.30E+00 2.70E+01 MU 56 L13981-02 5/28/2008 Cr-51 -6.50E+01 6.80E+01 2.50E+02 MU 56 L13981-02 5/28/2008 Cs-134 -3.1 OE+00 4.40EO00 2.20E+01 MU 56 L13981-02 5/28/2008 Cs-137 8.40E+00 7.00E+00 2.40E+01 MU 56 L13981-02 5/28/2008 Fe-59 -2.OOE+00 1.40E+01 5.40E+01 MU 56 L13981-02 5/28/2008 1-131 1.40E+01 2.10E+01 7.20E+01 MU 56 L13981-02 5/28/2008 K-40 1.31E+03 1.60E+02 3.50E+02 MU 56 L13981-02 5/28/2008 La-140 1.00E+01 1.50E+01 5.60E+01 MU 56 L13981-02 5/28/2008 Mn-54 -1.90E+00 6.40E+00 2.40E+01 MU 56 L13981-02 5/28/2008 Nb-95 -5.50E+00 7.30E+00 2.80E+01 MU 56 L13981-02 5/28/2008 Ru-103 -5.1 OE+00 6.80E+00 2.60E+0 I MU 56 L13981-02 5/28/2008 Ru-106 -3.80E+01 6.30E+01 2.30E+02 MU 56 L13981-02 5/28/2008 Sb-124 5.OOE+00 1.40E+01 5.40E+01 MU 56 L13981-02 5/28/2008 Sb-125 1.90E+01 1.70E+01 5.80E+01 MU 56 L13981-02 5/28/2008 Se-75 2.80E+00 7.80E+00 2.70E+01 MU 56 L13981-02 5/28/2008 Zn-65 -5.OOE+00 1.50E+01 5.60E+01 MU 56 L13981-02 5/28/2008 Zr-95 1.40E+01 1.30E+01 4.30E+01 MU 56 L14667-02 12/3/2008 AcTh-228 1.60E+01 4.80E+01 1.80E+02 MU 56 L14667-02 12/3/2008 Ag-108m -5.70E+00 8.70E+00 3.60E+01 MU 56 LI14667-02 12/3/2008 Ag-I Om 1.40E+01 2.OOE+01 7.1OE+01 MU 56 L14667-02 12/3/2008 Ba-140 -9.00E+00 2.60E+01 1.1OE+02 MU 56 L14667-02 12/3/2008 Be-7 2.OOE+01 8.20E+01 3.1OE+02 MU 56 L14667-02 12/3/2008 Ce-141 5.OOE+00 1.30E+01 4.80E+01 MU 56 L14667-02 12/3/2008 Ce-144 1.90E+01 4.80E+01 1.70E+02 MU 56 L14667-02 12/3/2008 Co-57 0.OOE+00 6.OOE+00 2.20E+01 MU 56 L14667-02 12/3/2008 Co-58 2.I0E+01 1.20E+01 3.60E+01 MU 56 L14667-02 12/3/2008 Co-60 -I.10E+00 9.80E+00 4.60E+0 1 MU 56 L14667-02 12/3/2008 Cr-51 3.OOE+01 1.1OE+02 4.1OE+02 MU 56 L14667-02 12/3/2008 Cs-134 -1.24E+01 7.OOE+00 4.20E+01 MU 56 L14667-02 12/3/2008 Cs-137 0.OOE+00 1.50E+01 5.80E+01 MU 56 L14667-02 12/3/2008 Fe-59 2.30E+01 2.80E+01 1.00E+02 MU 56 L14667-02 12/3/2008 1-131 2.20E+01 2.1OE+01 7.40E+01 MU 56 L14667-02 12/3/2008 K-40 1.54E+03 3.40E+02 8.1OE+02 MU 56 L14667-02 12/3/2008 La-140 -9.OOE+00 2.60E+01 1.1OE+02 MU 56 L14667-02 12/3/2008 Mn-54 0.OOE+00 1.00E+01 4.30E+01 MU 56 L14667-02 12/3/2008 Nb-95 -1.70E+01 1.40E+01 6.10E+01 MU 56 L14667-02 12/3/2008 Ru-103 1.50E+01 1.20E+01 4.OOE+01 MU 56 L14667-02 12/3/2008 Ru-106 -4.OOE+01 1.20E+02 4.90E+02 MU 56 LI14667-02 12/3/2008 Sb-124 0.OOE+00 2.50E+01 1.20E+02 MU 56 LI14667-02 12/3/2008 Sb-125 -1.70E+01 3.1OE+0I 1.20E+02 MU 56 LI 4667-02 12/3/2008 Se-75 1.70E+01 1.30E+01 4.20E+01 MU 56 LI14667-02 12/3/2008 Zn-65 -3.20E+0 I 3.40E+0I 1.40E+02 MU 56 LI14667-02 12/3/2008 Zr-95 -1.90E+01 2.10E+01 8.80E+01 MU 59 L13988-02 5/22/2008 AcTh-228 1.90E+01 5.20E+0I 2.1OE+02 MU 59 L13988-02 5/22/2008 Ag-108m 1.40E+0I 1.30E+01 4.40E+0I MU 59 L13988-02 5/22/2008 I1.40E+01 Ag-110m 1.90E+01 7.30E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 145

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 S SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I MU MU 59 59 LI3988-02 L13988-02 5/22/2008 5/22/2008 Ba-140 Be-7 7.30E+01

-1.001E+02 6.50E+01 1.40E+02 2.30E+02 5.90E+02 I

MU 59 L13988-02 5/22/2008 Ce- 141 1.00E+00 2.30E+01 8.40E+0 I MU MU 59 59 L13988-02 L13988-02 5/22/2008 5/22/2008 5/22/2008 Ce-144 Co-57 8.90E+01 4.OOE+00

-3.60E+0 1 6.70E+01 9.30E+00 1.60E+01 2.20E+02 3.30E+01 8.50E+01 I

MU 59 L13988-02 Co-58 MU MU MU 59 59 59 LI13988-02 L13988-02 L13988-02 5/22/2008 5/22/2008 5/22/2008 Co-60 Cr-51 Cs-134

-1.50E+01 0.OOE+00

-2.60E+00 1.1OE+OI 1.70E+02 8.70E+00 6.70E+01 6.50E+02 5.OOE+01 I

MU 59 L13988-02 5/22/2008 Cs-137 -2.20E+01 1.50E+01 7.OOE+01 MU 59 L13988-02 5/22/2008 Fe-59 -2.70E+01 2.70E+01 1.501E+02 4.50E+01 5.80E+01 2.1OE+02 MU MU MU 59 59 59 LI3988-02 L13988-02 L13988-02 5/22/2008 5/22/2008 5/22/2008 1-131 K-40 La-140 9.40E+02 7.30E+01 3.20E+02 6.50E+01 8.20E+02 2.30E+02 I

MU 59 L13988-02 5/22/2008 Mn-54 6.OOE+00 1.20E+01 4.60E+01 MU MU MU 59 59 59 L13988-02 L13988-02 L13988-02 5/22/2008 5/22/2008 5/22/2008 Nb-95 Ru-103 Ru-106

-1.90E+01

-I.80E+01

-1.80E+01 1.80E+01 1.60E+01 9.60E+0 I 8.50E+01 7.10E+01 4.30E+02 I

MU 59 L13988-02 5/22/2008 -2.10E+01 4.70E+0 1 2.30E+02 I

Sb-124 MU 59 L13988-02 5/22/2008 Sb-125 9.00E+00 2.80E+0I 1.1OE+02 MU 59 L13988-02 5/22/2008 Se-75 1.70E+01 1.70E+01 5.70E+0I MU 59 L13988-02 5/22/2008 Zn-65 1.20E+01 4.OOE+01 1.60E+02 MU MU MU 59 59 59 L13988-02 L14648-02 L14648-02 5/22/2008 11/18/2008 11/18/2008 Zr-95 AcTh-228 Ag-108m

-5.40E+01

-9.70E+01

-5.70E+00 2.70E+01 3.70E+01 8.40E+00 1.40E+02 1.60E+02 3.20E+01 I

MU 59 LI14648-02 11/18/2008 Ag-1 10m 2.OOE+00 1.30E+01 5.OOE+01 MU MU 59 59 Li14648-02 LI14648-02 11/18/2008 11/18/2008 Ba-140 Be-7 0.OOE+00

-1.34E+02 3.70E+01 9.30E+01 1.501E+02 3.80E+02 I

MU 59 L14648-02 11/18/2008 Ce-141 1.40E+01 1.90E+01 6.40E+01 MU MU MU 59 59 59 L14648-02 L14648-02 L14648-02 11/18/2008 11/18/2008 11/18/2008 Ce-144 Co-57 Co-58

-1.18E+02 5.90E+00

-1.02E+01 4.70E+0 I 6.20E+00 9.80E+00 1.90E+02 2.10E+01 4.10E+01 I

MU 59 L14648-02 11/18/2008 Co-60 -2.40E+00 6.20E+00 2.80E+0 I MU MU 59 59 L14648-02 L14648-02 11/18/2008 11/18/2008 Cr-51 Cs-134 6.OOE+01 2.70E+00 1.20E+02 8.80E+00 4.40E+02 4.30E+01 I

MU 59 L14648-02 11/18/2008 Cs-137 7.00E+00 1.001E+01 3.70E+0 1 MU 59 L14648-02 11/18/2008 Fe-59 -1.40E+01 2.20E+01 9.1OE+0I MU 59 L14648-02 11/18/2008 1-131 -7.00E+00 6.20E+01 2.30E+02 MU MU MU 59 59 59 LI14648-02 LI14648-02 LI14648-02 11/18/2008 11/18/2008 11/18/2008 K-40 La-140 Mn-54 1.29E+03 0.OOE+00 1.91E+01 2.20E+02 3.70E+01 9.40E+00 5.30E+02 1.501E+02 2.90E+01 I

MU MU MU 59 59 59 L14648-02 L14648-02 L14648-02 11/18/2008 11/18/2008 11/18/2008 Nb-95 Ru-103 Ru-106

-1.00E+01

-1.60E+01 0.OOE+00 I.IOE+01 1.30E+01 8.50E+0I 4.60E+01 5.10E+01 3.20E+02 I

MU 59 L14648-02 11/18/2008 Sb-124 4.50E+0 1 2.80E+01 8.90E+0I MU MU MU 59 59 L14648-02 L14648-02 L14648-02 11/18/2008 11/18/2008 11/18/2008 Sb-125 Se-75

-1.60E+01 3.001E+00 2.10E+01 2.40E+0 I 1.10E+01 2.10E+01 9.30E+01 3.90E+0I 7.40E+01 I

59 Zn-65 MU 59 L14648-02 11/18/2008 Zr-95 3.60E+01 2.00E+01 6.50E+01 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 146 i

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE L13984-01 5/28/2008 AcTh-228 6.43E+02 5.80E+01 1.90E+02

SE L13984-01 5/28/2008 Ag-108m 8.1OE+00 9.70E+00 3.30E+01 SE L13984-01 5/28/2008 Ag-I Om -6.OOE+00 1.80E+01 6.50E+01 SE L13984-01 5/28/2008 Ba-140 1.50E+01 2.OOE+01 7.30E+01 SE L13984-01 5/28/2008 Be-7 2.70E+02 1.1OE+02 3.30E+02 SE L13984-01 5/28/2008 Ce-141 -1.IOE+01 2.60E+01 8.90E+01 SE L13984-01 5/28/2008 Ce-144 9.90E+01 8.90E+01 3.OOE+02 SE LI3984-01 5/28/2008 Co-57 -8.OOE+00 1.10E+01 4.00E+01 SE L13984-01 5/28/2008 Co-58 -1.001E+01 1.30E+01 4.90E+01 SE L13984-01 5/28/2008 Co-60 1.00E+01 1.30E+01 4.40E+01 SE L13984-01 5/28/2008 Cr-51 - 1.00E+02 1.50E+02 5.20E+02 SE L13984-01 5/28/2008 Cs-134 1.00E+00 2.20E+01 8.80E+01 SE L13984-01 5/28/2008 Cs-137 -I.80E+01 1.30E+01 4.90E+01 SE L13984-01 5/28/2008 Fe-59 0.OOE+00 2.90E+01 1.00E+02 SE L13984-01 5/28/2008 1-131 -I.70E+0I 3.70E+01 1.30E+02 SE L13984-01 5/28/2008 K-40 1.27E+04 5.1OE+02 4.70E+02 SE L13984-01 5/28/2008 La- 140 1.50E+01 2.OOE+01 7.30E+01 SE L13984-01 5/28/2008 Mn-54 -1.20E+01 1.20E+01 4.70E+0 I SE L13984-01 5/28/2008 Nb-95 4.30E+01 1.80E+01 5.70E+01 SE L13984-001 5/28/2008 Ru-103 6.OOE+00 1.40E+0I 4.90E+01 SE L13984-01 5/28/2008 Ru-106 1.00E+02 1.1 OE+02 3.60E+02 SE L13984-01 5/28/2008 Sb-124 -2.20E+01 2.30E+01 9.80E+01 SE L13984-01 5/28/2008 Sb-125 -3.10E+01 3.20E+01 1.20E+02 SE L13984-01 5/28/2008 Se-75 2.40E+01 1.80E+01 5.90E+0I SE L13984-01 5/28/2008 Zn-65 -2.90E+01 6.10E+01 2.10E+02 SE L13984-01 5/28/2008 Zr-95 0.OOE+00 2.40E+01 8.80E+01 SE L1,3984-02 5/28/2008 AcTh-228 1.42E+03 8.50E+01 2.60E+02 SE L13984-02 5/28/2008 Ag-108m 2.20E+01 1.60E+01 5.30E+01 SE L13984-02 5/28/2008 Ag-1 10m -I.40E+01 1.80E+01 6.50E+01 SE L13984-02 5/28/2008 Ba-140 -7.OOE+01 1.20E+02 4.30E+02 SE LI3984-02 5/28/2008 Be-7 3.OOE+01 1.70E+02 6.1OE+02 SE L13984-02 5/28/2008 Ce-I141 3.20E+01 4.30E+01 1.40E+02 SE L13984-02 5/28/2008 Ce-144 -1.30E+02 1.50E+02 5.OOE+02 SE L13984-02 5/28/2008 Co-57 -4.OOE+00 1.80E+01 6.20E+0I SE L13984-02 5/28/2008 Co-58 -1.00E+01 1.70E+01 6.40E+01 SE L113984-02 5/28/2008 Co-60 2.30E+01 1.40E+01 4.70E+01 SE LI13984-02 5/28/2008 Cr-51 3.1OE+02 2.1OE+02 6.90E+02 SE L13984-02 5/28/2008 Cs-134 -4.OOE+01 2.30E+01 9.OOE+01 SE L13984-02 5/28/2008 Cs-137 1.60E+01 2.OOE+01 6.70E+0 I SE L13984-02 5/28/2008 Fe-59 2.40E+01 3.80E+01 1.30E+02 SE L13984-02 5/28/2008 1-131 -1.30E+01 5.60E+01 2.OOE+02 SE L13984-02 5/28/2008 K-40 1.34E+04 6.OOE+02 6.30E+02 SE L13984-02 5/28/2008 La-140 2.OOE+01 7.OOE+01 2.40E+02 SE LI3984-02 5/28/2008' Mn-54 9.OOE+00 1.80E+01 6.30E+01 SE L13984-02 5/28/2008 Nb-95 0.OOE+00 2.60E+01 9.20E+01 SE L13984-02 5/28/2008 Ru-103 2.30E+01 2.OOE+01 6.60E+01 SE LI3984-02 5/28/2008 Ru-106 6.OOE+01 1.50E+02 5.20E+02 SE L13984-02 5/28/2008 Sb-124 -2.70E+01 2.70E+01 1.20E+02 SE L13984-02 5/28/2008 Sb-125 -5.70E+01 5.OOE+01 1.80E+02 SE LI3984-02 5/28/2008 Se-75 -1.40E+01 2.50E+01 8.70E+0I SE LI3984-02 5/28/2008 Zn-65 4.50E+01 8.10E+01 2.70E+02 SE L13984-02 5/28/2008 Zr-95 2.50E+01 3.60E+01 1.30E+02 SE L13984-03 5/28/2008 AcTh-228 1.86E+03 1.90E+02 5.80E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 147

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I SE SE SE L13984-03 LI3984-03 L13984-03 5/28/2008 5/28/2008 5/28/2008 Ag- 108m Ag-1 10m Ba-140

-1.80E+01

-4.40E+01

-4.40E+02 2.90E+01 3.10E+01 2.50E+02 1.1OE+02 1.30E+02 1.1 OE+03 I

SE SE L13984-03 L13984-03 5/28/2008 5/28/2008 Be-7 Ce- 141 1.00E+02

-7.20E+01 3.30E+02 7.20E+01 2.10E+02 1.20E+03 2.60E+02 7.40E+02 I

SE L13984-03 5/28/2008 Ce-144 0.OOE+00 SE SE SE L13984-03 L13984-03 L13984-03 5/28/2008 5/28/2008 5/28/2008 Co-57 Co-58 Co-60

-2.30E+01 1.60E+01

-9.OOE+00 2.40E+01 3.30E+01 4.10E+01 8.80E+01 1.20E+02 1.70E+02 I

SE L13984-03 5/28/2008 Cr-51 2.OOE+01 3.60E+02 1.30E+03 SE SE L13984-03 L13984-03 5/28/2008 5/28/2008 Cs-134 Cs-137 1.40E+01 8.80E+01 2.10E+01 3.20E+01 8.70E+01 9.20E+01 8.80E+01 3.70E+02 I

SE LI3984-03 5/28/2008 Fe-59 -7.80E+01 SE L13984-03 5/28/2008 1-131 3.OOE+01 1.IOE+02 3.90E+02 I

SE L 13984-03 5/28/2008 K-40 1.19E+04 1.20E+03 1.40E+03

SE L13984-03 5/28/2008 La-140 -1.10E+02 1.30E+02 5.30E+02 SE L13984-03 5/28/2008 Mn-54 5.OOE+00 3.30E+01 1.30E+02 SE SE L 13984-03 L13984-03 5/28/2008 5/28/2008 Nb-95 Ru-103

-6.70 E+01

-3.30E+01 6.OOE+01 5.60E+01 3.70E+01 2.90E+02 2.20E+02 1.50E+02 1.1OE+03 I

SE L13984-03 5/28/2008 Ru-106 SE SE SE L13984-03 L13984-03 L13984-03 5/28/2008 5/28/2008 5/28/2008 Sb-124 Sb-125 Se-75 0.OOE+00 1.40E+01

-1.30E+01 6.10E+01 8.40E+0 I 4.30E+01 2.80E+02 3.1OE+02 1.60E+02 I

SE L13984-03 5/28/2008 Zn-65 -1.20E+02 1.60E+02 6.1OE+02 SE SE L13984-03 L14662-01 5/28/2008 12/3/2008 Zr-95 AcTh-228

-1.04E+02 2.17E+03

-2. 1OE+01 6.90E+01 7.80E+01 1.40E+01 3.50E+02 2.20E+02 5.20E+0 I

I SE L14662-01 12/3/2008 Ag-108m SE SE SE L14662-01 L14662-01 L14662-01 12/3/2008 12/3/2008 12/3/2008 Ag-10I Om Ba-140 Be-7

-1.00E+01

-2.20E+02

-5.OOE+01 1.50E+01 1.20E+02 1.50E+02 5.60E+0I 4.40E+02 5.1OE+02 I

SE L14662-01 12/3/2008 Ce- 141 1.60E+01 3.70E+01 1.20E+02 SE SE L14662-01 L14662-01 12/3/2008 12/3/2008 Ce- 144 Co-57

-8.OOE+01

-3.OOE+00

-4.OOE+00 1.30E+02 1.60E+01 1.70E+01 4.40E+02 5.50E+0 I 6.OOE+01 I

SE L14662-01 12/3/2008 Co-58 SE SE SE L14662-01 L14662-01 LI14662-01 12/3/2008 12/3/2008 12/3/2008 Co-60 Cr-51 Cs-134 1.60E+01

-3.90E+02 9.OOE+00 1.40E+01 1.90E+02 2.20E+01 4.90E+0 1 6.70E+02 7.90E+01 I

SE L14662-01 12/3/2008 Cs-137 5.OOE+00 1.80E+01 6.20E+0I SE SE L14662-01 L14662-01 L14662-01 12/3/2008 12/3/2008 12/3/2008 Fe-59 1-131 K-40

-6.70E+01 5.30E+01 1.22E+04 3.60E+01 4.40E+01 5.OOE+02 1.40E+02 1.50E+02 5.90E+02

I SE SE SE SE L14662-01 L14662-01 L14662-01 12/3/2008 12/3/2008 12/3/2008 La-140 Mn-54 Nb-95 1.60E+01 2.30E+01

-3.10E+01 5.60E+01 1.70E+01 3.10E+01 1.90E+02 5.80E+01 1.1OE+02 I

SE L14662-01 12/3/2008 Ru-103 1.80E+01 1.80E+01 6.1OE+01 SE SE L14662-01 L14662-01 12/3/2008 12/3/2008 Ru-106 Sb-124 1.00E+02

-2.50E+01

-5.50E+01 1.40E+02 2.70E+01 4.50E+01 4.90E+02 1.1OE+02 1.60E+02 I

SE L14662-01 12/3/2008 Sb-125 SE SE SE L14662-01 L14662-01 L14662-01 12/3/2008 12/3/2008 12/3/2008 Se-75 Zn-65 Zr-95

-4.40E+01 1.04E+02

-2.01 E+02 2.50E+01 7.70E+01 6.60E+01 8.70E+01 2.50E+02 2.50E+02 I

SE L14662-02 12/3/2008 AcTh-228 1.35E+03 7.80E+01 2.40E+02

SE LI14662-02 12/3/2008 Ag-108m 1.60E+01 1.50E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 5.20E+01 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 148 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE L14662-02 12/3/2008 Ag-il0m I.OOE+00 1.80E+01 6.30E+01 SE L14662-02 12/3/2008 Ba-140 1.60E+02 1.1 OE+02 3.60E+02 SE L14662-02 12/3/2008 Be-7 3. 1OE+02 1.60E+02 5.30E+02 SE L14662-02 12/3/2008 Ce-141 4.OOE+01 3.50E+01 1.20E+02 SE LI14662-02 12/3/2008 Ce-144 4.OOE+01 1.20E+02 4.1OE+02 SE LI14662-02 12/3/2008 Co-57 -7.OOE+00 1.50E+01 5.10E+01 SE LI14662-02 12/3/2008 Co-58 -2.40E+01 1.80E+01 6.90E+01 SE LI14662-02 12/3/2008 Co-60 -1.20E+01 1.80E+01 7.10E+01 SE L14662-02 12/3/2008 Cr-51 -3.OOE+01 1.80E+02 6.40E+02 SE L14662-02 12/3/2008 Cs-134 -2.60E+01 2.70E+0I 1.1OE+02 SE L14662-02 12/3/2008 Cs-137 -I.70E+01 1.90E+01 7.30E+01 SE L14662-02 12/3/2008 Fe-59 2.30E+01 3.90E+0I 1.40E+02 SE L14662-02 12/3/2008 1-131 3.50E+01 4.90E+0 1 1.70E+02 SE L14662-02 12/3/2008 K-40 1.35E+04 6.70E+02 6.70E+02 SE L14662-02 12/3/2008 La-140 3.50E+01 6.40E+01 2.20E+02 SE L14662-02 12/3/2008 Mn-54 2.50E+01 1.80E+01 6.OOE+01 SE LI14662-02 12/3/2008 Nb-95 -2.90E+0 I 2.20E+01 8.40E+01 SE LI14662-02 12/3/2008 Ru-103 2.OOE+00 1.90E+01 6.80E+01 SE LI14662-02 12/3/2008 Ru-106 1.80E+02 1.60E+02 5.50E+02 SE LI14662-02 12/3/2008 Sb-124 4.40E+01 2.90E+01 9.40E+01 SE LI14662-02 12/3/2008 Sb-125 -5.60E+01 4.70E+01 1.80E+02 SE LI14662-02 12/3/2008 Se-75 -1.50E+01 2.20E+01 7.70E+01 SE L14662-02 12/3/2008 Zn-65 -4.OOE+01 8.OOE+01 2.80E+02 SE LI14662-02 12/3/2008 Zr-95 9.60E+01 3.70E+01 1.1OE+02 SE LI14662-03 12/3/2008 AcTh-228 1.35E+03 6.20E+01 1.70E+02 SE LI14662-03 12/3/2008 Ag-108m 1.70E+01 1.30E+01 4.40E+01 SE L14662-03 12/3/2008 Ag-110m 7.OOE+00 1.50E+01 5.OOE+01 SE L14662-03 12/3/2008 Ba-140 -3.30E+01 8.90E+01 3.20E+02 SE L14662-03 12/3/2008 Be-7 -1.20E+02 1.40E+02 5.OOE+02 SE L14662-03 12/3/2008 Ce-141 2.OOE+00 3.20E+0I 1.1 OE+02 SE L14662-03 12/3/2008 Ce-144 -2.OOE+01 1.20E+02 3.90E+02 SE L14662-03 12/3/2008 Co-57 1.1 OE+0I 1.40E+01 4.70E+01 SE L14662-03 12/3/2008 Co-58 -1.40E+01 I .40E+01 5.10E+01 SE LI14662-03 12/3/2008 Co-60 1.50E+01 1.40E+01 4.80E+01 SE L14662-03 12/3/2008 Cr-51 5.OOE+01 1.60E+02 5.40E+02 SE LI14662-03 12/3/2008 Cs-134 -4.OOE+01 2.20E+01 8.90E+01 SE L14662-03 12/3/2008 Cs-137 -2.30E+01 1.70E+01 6.30E+01 SE L14662-03 12/3/2008 Fe-59 -2.30E+01 3.OOE+01 1.1 OE+02 SE L14662-03 12/3/2008 1-131 2.50E+01 4.20E+01 1.40E+02 SE L14662-03 12/3/2008 K-40 1.51 E+04 5.30E+02 5.20E+02 SE L14662-03 12/3/2008 La- 140 -I.OOE+00 5.50E+01 1.90E+02 SE L14662-03 12/3/2008 Mn-54 - 1.80E+01 1.50E+01 5.50E+01 SE L14662-03 12/3/2008 Nb-95 1.20E+01 2.OOE+01 6.70E+01 SE L14662-03 12/3/2008 Ru-103 -1.90E+01 1.60E+01 5.90E+01 SE L14662-03 12/3/2008 Ru-106 -8.OOE+01 1.30E+02 4.70E+02 SE L14662-03 12/3/2008 Sb-124 5.60E+01 2.70E+01 8.50E+01 SE L14662-03 12/3/2008 Sb-125 3.1OE+0I 4.1OE+0 I 1.40E+02 SE L14662-03 12/3/2008 Se-75 -1.70E+01 2.OOE+01 6.90E+01 SE L14662-03 12/3/2008 Zn-65 -5.30E+01 6.OOE+01 2.20E+02 SE L14662-03 12/3/2008 Zr-95 6.50E+01 2.70E+01 8.40E+01 SE L13984-04 5/22/2008 AcTh-228 2.50E+02 1.40E+02 4.50E+02 SE L13984-04 5/22/2008 Ag-108m 5.OOE+00 1.60E+01 6.20E+01 SE L13984-04 5/22/2008 Ag- IlOm 3.70E+01 2.40E+0 1 7.80E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 149

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I SE SE L13984-04 L13984-04 5/22/2008 5/22/2008 Ba-140 Be-7

-3.20E+02 6.OOE+01 2.50E+02 2.1OE+02 1.1OE+03 8.20E+02 I

SE L13984-04 5/22/2008 Ce-141 1.30E+01 5.OOE+01 1.80E+02 SE SE L13984-04 L13984-04 5/22/2008 5/22/2008 Ce- 144 Co-57 1.60E+02 3.10E+01

-I.00E+00 1.50E+02 1.90E+01 2.90E+01 5.OOE+02 6.40E+01 1.20E+02 I

SE L13984-04 5/22/2008 Co-58 SE SE SE L13984-04 L13984-04 L13984-04 5/22/2008 5/22/2008 5/22/2008 Co-60 Cr-51 Cs-134

-5.OOE+0 I

-2.30E+02 1.40E+01 3.20E+01 3.30E+02 2.10E+01 1.60E+02 1.30E+03 9.20E+01 I

SE L13984-04 5/22/2008 Cs-137 -2.90E+0 I 2.60E+0 I 1.20E+02 SE SE L13984-04 LI13984-04 5/22/2008 5/22/2008 5/22/2008 Fe-59 1-131

- 1.1OE+02 1.40E+02 1.59E+04 8.50E+01 1.50E+02 1.30E+03 3.80E+02 5.20E+02 1.60E+03

I SE LI13984-04 K-40 SE SE SE L13984-04 L13984-04 LI13984-04 5/22/2008 5/22/2008 5/22/2008 La-140 Mn-54 Nb-95 0.OOE+00 9.OOE+00

-3.70E+01 1.20E+02 3.20E+01 3.90E+01 4.90E+02 1.20E+02 1.70E+02 I

SE LI13984-04 5/22/2008 Ru-103 6.20E+OI 2.50E+01 5.70E+01 SE SE LI13984-04 L13984-04 L13984-04 5/22/2008 5/22/2008 5/22/2008 Ru-106 Sb-124 5.OOE+01 0.00E+00

-5.90E+01 2.60E+02 4.60E+01 6.50E+01 1.00E+03 2.40E+02 2.80E+02 I

SE Sb-125 SE SE SE L13984-04 LI 3984-04 L13984-04 5/22/2008 5/22/2008 5/22/2008 Se-75 Zn-65 Zr-95

-1.00E+00

-5.70E+01

-3.90E+0 I 3.30E+01 8.20E+01 4.40E+01 1.20E+02 3.40E+02 2.30E+02 I

SE L13984-05 5/22/2008 AcTh-228 3.42E+02 9.10E+01 2.60E+02 SE SE L13984-05 L13984-05 5/22/2008 5/22/2008 5/22/2008 Ag-108m Ag-il0m Ba-140 3.30E+01 1.80E+01 8.OOE+01 1.50E+01 1.80E+01 2.60E+02 4.40E+01 6.50E+01 9.40E+02 I

SE L13984-05 SE SE SE L13984-05 L13984-05 L13984-05 5/22/2008 5/22/2008 5/22/2008 Be-7 Ce-141 Ce-144

-4.OOE+01

-9.40E+01 7.OOE+01 2.OOE+02 4.40E+01 1.40E+02 7.90E+02 1.80E+02 4.90E+02 I

SE L13984-05 5/22/2008 Co-57 -2.OOE+00 1.80E+01 6.30E+01 SE SE SE L13984-05 L13984-05 L13984-05 5/22/2008 5/22/2008 5/22/2008 Co-58 Co-60 Cr-51

- 1.70E+01 0.OOE+00

-3.40E+02 2.20E+0 I 2.20E+OI 3.OOE+02 9.40E+01 9.OOE+01 1.20E+03 I

SE SE SE L13984-05 L13984-05 L13984-05 5/22/2008 5/22/2008 5/22/2008 Cs-134 Cs-137 Fe-59 1.30E+01 1.60E+01

-1.08E+02 2.1OE+OI 2.20E+OI 7.30E+01 7.50E+01 7.80E+01

3. 1OE+02 I

SE L13984-05 5/22/2008 1-131 -1.001E+02 1.00E+02 4.20E+02 SE SE SE L13984-05 L13984-05 L13984-05 5/22/2008 5/22/2008 5/22/2008 K-40 La-140 Mn-54 1.79E+04 1.60E+02 0.OOE+00 1.10E+03 1.1 OE+02 2.1OE+OI 6.70E+02 3.60E+02 8.10E+01 I

SE SE SE L13984-05 L13984-05 L13984-05 5/22/2008 5/22/2008 5/22/2008 Nb-95 Ru-103 Ru-106 2.10E+01

-2.90E+01

-1.00E+01 3.30E+01 3.OOE+01 1.80E+02 1.20E+02 1.20E+02 7.1OE+02 I

SE LI13984-05 5/22/2008 Sb-124 1.90E+01 3.40E+OI 1.40E+02 SE SE L13984-05 L13984-05 L13984-05 5/22/2008 5/22/2008 5/22/2008 Sb-125 Se-75 Zn-65 5.1OE+0I 1.20E+01

-5.30E+01 4.50E+01 2.80E+OI 5.80E+0I 1.50E+02 1.00E+02 2.40E+02 I

SE SE SE SE L13984-05 L13984-06 L13984-06 5/22/2008 5/22/2008 5/22/2008 Zr-95 AcTh-228 Ag-108m 3.1 OE+0 1 2.69E+02

-1.50E+01 3.90E+OI 9.20E+01 1.90E+01 1.80E+02 2.50E+02 7.40E+01 I

SE L13984-06 5/22/2008 Ag-110m -2.00E+01 2.OOE+01 8.40E+01 SE L13984-06 5/22/2008 Ba-140 -6.OOE+01 1.70E+02 6.90E+02 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 150

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE LI13984-06 5/22/2008 Be-7 1.00E+01 1.90E+02 7. IOE+02 SE L13984-06 5/22/2008 Ce-141 4.80E+01 4.90E+01 1.70E+02 SE L13984-06 5/22/2008 Ce-144 -7.OOE+01 1.30E+02 4.80E+02 SE L13984-06 5/22/2008 Co-57 -1.40E+01 1.80E+01 6.60E+01 SE L13984-06 5/22/2008 Co-58 1.00E+01 1.80E+01 6.70E+0 I SE L13984-06 5/22/2008 Co-60 4.60E+01 2.OOE+01 5.40E+01 SE L13984-06 5/22/2008 Cr-51 -2.OOE+02 2.90E+02 1.1OE+03 SE L13984-06 5/22/2008 Cs-134 -I.80E+01 3.10E+01 1.20E+02 SE L13984-06 5/22/2008 Cs-137 2.OOE+01 2.20E+01 7.80E+01 SE L13984-06 5/22/2008 Fe-59 3.60E+01 6.20E+01 2.20E+02 SE L13984-06 5/22/2008 1-131 2.OOE+01 1.30E+02 4.70E+02 SE L13984-06 5/22/2008 K-40 1.66E+04 9.80E+02 6.OOE+02 SE LI13984-06 5/22/2008 La- 140 1.1OE+02 1.1 OE+02 4.OOE+02 SE L13984-06 5/22/2008 Mn-54 -1.80E+01 1.90E+01 8.10E+01 SE L13984-06 5/22/2008 Nb-95 -3.OOE+00 3.OOE+01 1.20E+02 SE L13984-06 5/22/2008 Ru-103 3.OOE+00 2.30E+01 8.80E+01 SE L13984-06 5/22/2008 Ru-106 1.50E+02 1.70E+02 5.90E+02 SE L13984-06 5/22/2008 Sb-124 1.60E+01 3.10E+01 1.40E+02 SE L13984-06 5/22/2008 Sb-125 -5.40E+01 5.60E+01 2.20E+02 SE L13984-06 5/22/2008 Se-75 -2.30E+01 2.50E+01 9.70E+01 SE LI 39 8 4-0 6 5/22/2008 Zn-65 -8.60E+01 5.90E+0I 2.50E+02 SE L13984-06 5/22/2008 Zr-95 -8.OOE+00 3.40E+01 1.60E+02 SE L14662-04 11/19/2008 AcTh-228 3.30E+02 4.70E+01 1.70E+02 SE L14662-04 11/19/2008 Ag-108m -1.15E+01 9.80E+00 3.70E+01 SE L14662-04 11/19/2008 Ag-lr0m 1.00E+00 1.00E+01 3.70E+01 SE L14662-04 11/19/2008 Ba-140 6.OOE+01 1.70E+02 5.80E+02 SE L14662-04 11/19/2008 Be-7 -8.60E+01 9.90E+01 3.80E+02 SE L14662-04 11/19/2008 Ce-141 1.20E+01 2.80E+01 9.50E+01 SE L14662-04 11/19/2008 Ce-144 -4.20E+01 7.70E+01 2.70E+02 SE L14662-04 11/19/2008 Co-57 -I.31E+01 9.60E+00 3.40E+01 SE L14662-04 11/19/2008 Co-58 -7.OOE+00 1.40E+01 5.20E+01 SE L14662-04 11/19/2008 Co-60 6.OOE+00 1.40E+01 4.80E+01 SE L14662-04 11/19/2008 Cr-51 6.OOE+01 1.60E+02 5.60E+02 SE L14662-04 11/19/2008 Cs-134 1.90E+01 1.30E+01 4.30E+01 SE L14662-04 11/19/2008 Cs-137 -I.30E+01 1.1OE+01 4.40E+01 SE L14662-04 11/19/2008 Fe-59 -2.OOE+00 3.90E+01 1.40E+02 SE L14662-04 11/19/2008 1-131 5.OOE+01 1.OOE+02 3.50E+02 SE L14662-04 11/19/2008 K-40 1.86E+04 6.OOE+02 4.90E+02 SE L14662-04 11/19/2008 La-140 8.OOE+00 8.OOE+01 2.80E+02 SE L14662-04 11/19/2008 Mn-54 1.00E+01 1.30E+01 4.40E+01 SE L14662-04 11/19/2008 Nb-95 1.20E+01 2.1OE+0I 7.20E+/--01 SE L14662-04 11/19/2008 Ru-103 1.40E+01 1.50E+01 5.OOE+01 SE L14662-04 11/19/2008 Ru-106 -1.70E+02 1.1 OE+02 4.1OE+02 SE L14662-04 11/19/2008 Sb-124 1.20E+01 2.40E+0 1 8.80E+01 SE L14662-04 11/19/2008 Sb-125 1.20E+01 3.20E+01 1.1OE+02 SE L14662-04 11/19/2008 Se-75 -6.OOE+00 1.80E+01 6.20E+01 SE LI14662-04 11/19/2008 Zn-65 8.90E+01 5.90E+01 1.90E+02 SE LI14662-04 11/19/2008 Zr-95 0.OOE+00 2.60E+0I 9.50E+01 SE LI14662-05 11/19/2008 AcTh-228 2.37E+02 5.60E+01 2.1OE+02 SE L14662-05 11/19/2008 Ag- 108m 6.OOE+00 I. IOE+01 3.70E+01 SE L14662-05 11/19/2008 Ag-110m -5.OOE+00 I.IOE+01 4.OOE+01 SE LI14662-05 11/19/2008 Ba-140 2.OOE+02 1.50E+02 5.1 OE+02 SE L14662-05 11/19/2008 Be-7 2.50E+02 1.20E+02 4.00E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 151

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I SE SE L14662-05 L14662-05 11/19/2008 Ce-I141 11/19/2008 Ce- 144

-2.70E+01 3.OOE+01 3.OOE+01 7.70E+01 1.IOE+02 2.60E+02 I

SE L14662-05 11/19/2008 Co-57 -7.OOE+00 .1.00E+01 3.60E+01 SE L14662-05 11/19/2008 Co-58 -3.OOE+00 1.10E+01 4.30E+01 SE L14662-05 11/19/2008 Co-60 5.OOE+00 1.30E+01 4.60E+01 SE L14662-05 11/19/2008 Cr-51 -2.20E+02 1.50E+02 5.60E+02 SE L14662-05 11/19/2008 Cs-134 1.60E+01 1.20E+01 4.1OE+0I SE L14662-05 11/19/2008 Cs-137 -1.00E+00 1.20E+01 4.20E+01 SE L14662-05 11/19/2008 Fe-59 8.OOE+00 3.80E+01 1.30E+02 SE L14662-05 11/19/2008 1-131 -3.OOE+01 1.1 OE+02 3.80E+02 SE SE SE LI14662-05 L14662-05 L14662-05 11/19/2008 K-40 11/19/2008 La-140 2.04E+04

-1.30E+01

-7.OOE+00

6. 1OE+02 8.60E+01 1.20E+01 5.50E+02 3.10E+02 4.40E+01 I

11/19/2008 Mn-54 SE SE SE L14662-05 L14662-05 L14662-05 11/19/2008 Nb-95 11/19/2008 Ru-103 11/19/2008 Ru-106 2.80E+01

-3.OOE+00 6.OOE+01 2.OOE+01 1.70E+01 1.1OE+02 6.60E+01 6.20E+01 3.70E+02 I

SE. L14662-05 11/19/2008 Sb-124 1.1 OE+0 1 1.90E+01 7.30E+01 SE SE SE L14662-05 L14662-05 L14662-05 11/19/2008 Sb-125 11/19/2008 Se-75 11/19/2008 Zn-65

-1.30E+01

-2.OOE+01 6.OOE+00 3.OOE+01 1.60E+01 3.70E+01 1.1OE+02 5.90E+01 1.80E+02 I

SE SE SE L14662-05 L14662-06 L14662-06 11/19/2008 Zr-95 11/19/2008 AcTh-228 11/19/2008 Ag-108m 2.60E+01 3.83E+02 4.OOE+00 2.70E+01 7.30E+01 1.1 OE+0 1 9.OOE+01 2.50E+02 4.OOE+01 I

SE L14662-06 11/19/2008 Ag-1 10m 7.OOE+00 1.60E+01 5.60E+0I SE SE SE L14662-06 L14662-06 L14662-06 11/19/2008 Ba-140 11/19/2008 Be-7 11/19/2008 Ce-141 1.20E+02 3.OOE+01

-2.OOE+00 1.70E+02 1.50E+02 2.90E+01 6.OOE+02 5.30E+02 1.00E+02 i

SE SE SE L14662-06 L14662-06 L14662-06 11/19/2008 Ce-144 11/19/2008 Co-57 11/19/2008 Co-58

-2.11E+02

-7.OOE+00 3.OOE+00 8.30E+01 1.00E+01 2.1OE+01 3.10E+02 3.60E+01 7.40E+01 I

SE L14662-06 11/19/2008 Co-60 1.80E+01 1.50E+01 5.10E+01 SE SE SE L14662-06 L14662-06 L14662-06 11/19/2008 Cr-51 11/19/2008 Cs-134 11/19/2008 Cs-137 1.00E+02

-9.OOE+00

-8.OOE+00 1.70E+02 1.40E+01 1.70E+01 5.80E+02 6.60E+01 6.20E+01 II SE SE SE L14662-06 L14662-06 L14662-06 11/19/2008 Fe-59 11/19/2008 1-131 11/19/2008 K-40 3.30E+01

-7.OOE+01 2.19E+04 5.60E+0I 1.20E+02 8.30E+02 2.OOE+02 4.50E+02

6. IOE+02

I SE L14662-06 11/19/2008 La- 140 -4.80E+01 9.OOE+01 3.40E+02 SE L14662-06 11/19/2008 Mn-54 2.OOE+00 1.60E+01 5.90E+0I SE L14662-06 11/19/2008 Nb-95 2.50E+01 2.40E+01 8.30E+01 SE SE L14662-06 L14662-06 11/19/2008 Ru-103 11/19/2008 Ru-106 5.OOE+00

-2.20E+02 1.80E+01 1.50E+02 6.50E+01 5.90E+02 I

SE L14662-06 11/19/2008 Sb-124 -5.70E+01 2.90E+01 1.50E+02 SE L14662-06 11/19/2008 Sb-125 -2.90E+0 1 3.30E+01 1.30E+02 SE L14662-06 11/19/2008 Se-75 3.OOE+00 1.70E+01 5.80E+01 SE SE SE Li14662-06 L14662-06 L13984-07 11/19/2008 Zn-65 11/19/2008 Zr-95 5/22/2008 AcTh-228

-4.00E+01 2.20E+O1 2.50E+02 5.30E+01 3.30E+01 1.50E+02 1.90E+02 1.20E+02 4.60E+02 I

SE SE SE L13984-07 L13984-07 L13984-07 5/22/2008 Ag-108m 5/22/2008 Ag-I10m 5/22/2008 Ba-140 1.20E+01 0.OOE+00

-4.1 OE+02 2.30E+01 2.70E+01 2.70E+02 8.60E+01 1.10E+02 1.30E+03 I

SE L13984-07 5/22/2008 Be-7 1.50E+02 2.80E+02 1.10E+03 SE L13984-07 5/22/2008 Ce-141 1.48E+02 5.60E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 1.60E+02 I

+ Minimum Detectable Coficentration > Lower Limit of Detection Requirement 152

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE L13984-07 5/22/2008 Ce-I144 - 1.00E+02 1.40E+02 5.60E+02 SE L 13984-07 5/22/2008 Co-57 6.OOE+00 1.80E+01 6.40E+01 SE L13984-07 5/22/2008 Co-58 -3.40E+0 I 4.OOE+01 1.80E+02 SE L13984-07 5/22/2008 Co-60 2.40E+0 I 3.60E+0 I 1.40E+02 SE L13984-07 5/22/2008 Cr-51 3.OOE+02 3.50E+02 1.20E+03 SE L13984-07 5/22/2008 Cs-134 -2.30E+01 2.50E+01 1.1OE+02 SE L13984-07 5/22/2008 Cs-137 -9.OOE+00 3.OOE+01 1.30E+02 SE L13984-07 5/22/2008 Fe-59 -2.90E+0 I 9.70E+0I 4.1OE+02 SE L13984-07 5/22/2008 1-131 4.OOE+01 1.20E+02 4.60E+02 SE L13984-07 5/22/2008 K-40 2.03E+04 1.70E+03 1.90E+03 SE L 13984-07 5/22/2008 La- 140 -1.70E+02 1.30E+02 6.30E+02 SE L13984-07 5/22/2008 Mn-54 1.30E+01 3.30E+01 1.30E+02 SE L13984-07 5/22/2008 Nb-95 -4.30E+01 4.20E+01 2.OOE+02 SE L13984-07 5/22/2008 Ru-103 3.OOE+01 2.70E+01 9.30E+01 SE L13984-07 5/22/2008 Ru-106 -8.OOE+01 1.80E+02 8.40E+02 SE L13984-07 5/22/2008 Sb-124 -1.32E+02 7.60E+01 4.70E+02 SE L13984-07 5/22/2008 Sb-125 -3.70E+OI 6.50E+01 2.80E+02 SE L13984-07 5/22/2008 Se-75 2.30E+01 4.1OE+0I 1.50E+02 SE LI3984-07 5/22/2008 Zn-65 0.OOE+00 1.00E+02 4.OOE+02 SE L13984-07 5/22/2008 Zr-95 6.OOE+00 4.90E+01 2.OOE+02 SE L13984-08 5/22/2008 AcTh-228 2.1OE+02 1.30E+02 4.30E+02 SE L13984-08 5/22/2008 Ag-108m 1.30E+01 2.50E+01 9.30E+01 SE L13984-08 5/22/2008 Ag-110m -9.OOE+00 3.50E+01 1.40E+02 SE L13984-08 5/22/2008 Ba-140 7. IOE+02 3.80E+02 1.20E+03 SE L13984-08 5/22/2008 Be-7 -4.10E+02 3.1 OE+02 1.40E+03 SE L13984-08 5/22/2008 Ce-I141 -8.OOE+00 6.1OE+01 2.30E+02 SE L13984-08 5/22/2008 Ce-144 -6.OOE+01 1.80E+02 6.90E+02 SE L13984-08 5/22/2008 Co-57 2.10E+01 2.20E+01 7.70E+01 SE L13984-08 5/22/2008 Co-58 -2. 10E+01 4.60E+01 1.90E+02 SE L13984-08 5/22/2008 Co-60 -2.20E+01 4.10E+01 1.90E+02 SE L13984-08 5/22/2008 Cr-51 -4.1 OE+02 4.40E+02 1.80E+03 SE L13984-08 5/22/2008 Cs-134 4.40E+0 I 2.90E+01 9.50E+01 SE L13984-08 5/22/2008 Cs-137 2.80E+01 4.40E+01 1.60E+02 SE L13984-08 5/22/2008 Fe-59 -6.OOE+01 1.20E+02 5.1OE+02 SE L13984-08 5/22/2008 1-131 -4.OOE+01 1.70E+02 7.OOE+02 SE L13984-08 5/22/2008 K-40 2.12E+04 1.80E+03 8.50E+02 SE L13984-08 5/22/2008 La- 140 4.1OE+02 1.90E+02 5.40E+02 SE L13984-08 5/22/2008 Mn-54 7.OOE+00 3.1OE+0I 1.30E+02 SE L13984-08 5/22/2008 Nb-95 -2.80E+01 4.70E+01 2.1OE+02 SE L13984-08 5/22/2008 Ru-103 -6.50E+01 4.30E+01 2.OOE+02 SE L13984-08 5/22/2008 Ru-106 3.1OE+02 2.50E+02 8.50E+02 SE L13984-08 5/22/2008 Sb-124 4.50E+01 7.90E+01 3.30E+02 SE L13984-08 5/22/2008 Sb-125 4.10E+01 5.80E+01 2.20E+02 SE L13984-08 5/22/2008 Se-75 6.OOE+00 3.20E+01 1.20E+02 SE L13984-08 5/22/2008 Zn-65 0.OOE+00 9.1OE+OI 3.70E+02 SE L13984-08 5/22/2008 Zr-95 -9.OOE+00 6.OOE+01 2.70E+02 SE L13984-09 5/22/2008 AcTh-228 2.OOE+02 1.20E+02 3.90E+02 SE L13984-09 5/22/2008 Ag-108m -2.60E+01 1.90E+01 8.40E+01 SE L13984-09 5/22/2008 Ag-110m 6.OOE+00 2.30E+01 8.80E+01 SE L13984-09 5/22/2008 Ba-140 -6.50E+02 2.90E+02 1.30E+03 SE L13984-09 5/22/2008 Be-7 1.60E+02 2.70E+02 9.80E+02 SE L13984-09 5/22/2008 Ce-141 - 1.1 OE+02 5.50E+01 2.20E+02 SE L13984-09 5/22/2008 Ce-144 -1.40E+02 1.60E+02 6.20E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 153

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I SE SE L13984-09 L13984-09 5/22/2008 5/22/2008 Co-57 Co-58 1.40E+01

-1.50E+01 2.20E+01 2.70E+01 7.50E+01 1.20E+02 I

SE L13984-09 5/22/2008 Co-60 -5.80E+01 2.70E+01 1.40E+02 SE SE L13984-09 L13984-09 5/22/2008 5/22/2008 Cr-51 Cs-134

-6.60E+02

-2.40E+01 3.20E+02 2.30E+01 2.50E+01 1.40E+03 9.70E+01 1.1 OE+02 I

SE L13984-09 5/22/2008 Cs-137 -2.60E+01 SE SE SE L13984-09 L13984-09 L13984-09 5/22/2008 5/22/2008 5/22/2008 Fe-59 1-131 K-40

-7.50E+01 1.60E+02 2.14E+04 7.90E+01 1.60E+02 1.30E+03 3.30E+02 5.50E+02 1.1OE+03

I SE L13984-09 5/22/2008 La-140 1.20E+02 1.20E+02 4. 1OE+02 SE SE L13984-09 L13984-09 5/22/2008 5/22/2008 Mn-54 Nb-95 2.50E+01 4.60E+01 2.70E+01 4.90E+01 1.90E+01 9.40E+01 1.70E+02 5.50E+01 I

SE L13984-09 5/22/2008 Ru-103 3.30E+01 SE SE SE L13984-09 L13984-09 L13984-09 5/22/2008 5/22/2008 5/22/2008 Ru-106 Sb-124 Sb-125 4.OOE+01 2.50E+01 2.70E+01 2.20E+02 2.50E+01 6.50E+01 8.60E+02 6.80E+01 2.40E+02 I

SE L13984-09 5/22/2008 Se-75 0.OOE+00 3.10E+01 1.20E+02 SE SE L13984-09 L13984-09 5/22/2008 5/22/2008 Zn-65 Zr-95

-1.03E+02

-3.50E+01 4.09E+02 7.90E+01 4.30E+01 8.70E+01 3.30E+02 2.20E+02 2.80E+02

I SE L14662-07 11/19/2008 AcTh-228 SE SE SE L14662-07 L14662-07 L14662-07 1/19/2008 11/19/2008 1/19/2008 Ag-108m Ag-110m Ba-140 9.OOE+00 1.60E+01 1.90E+02 1.20E+01 1.70E+01 2.OOE+02 4.20E+01 5.80E+01 6.70E+02 I

SE L14662-07 11/19/2008 Be-7 8.OOE+01 1.40E+02 4.80E+02 SE SE L14662-07 L14662-07 L14662-07 11/19/2008 11/19/2008 11/19/2008 Ce-141 Ce-I144 3.90E+01

-2. 1OE+02 1.70E+01 3.20E+01 9.30E+01 1.20E+01 1.1 OE+02 3.40E+02 3.80E+01 I

SE Co-57 SE SE SE L14662-07 L14662-07 L14662-07 11/19/2008 11/19/2008 11/19/2008 Co-58 Co-60 Cr-51 2.OOE+00 1.20E+01 8.OOE+01 2.OOE+01 1.70E+01 2.40E+02 7.30E+01 6.20E+01 8.20E+02 I

SE L14662-07 11/19/2008 Cs-134 6.OOE+00 1.1 OE+0I 5.10E+01 SE SE L14662-07 L14662-07 11/19/2008 11/19/2008 Cs-137 Fe-59 6.OOE+00 2.20E+01

-1.70E+02 1.60E+01 5.OOE+01 1.30E+02 5.70E+01 1.80E+02 4.80E+02 I

SE L14662-07 11/19/2008 1-131 SE SE SE LI14662-07 L14662-07 L14662-07 11/19/2008 11/19/2008 11/19/2008 K-40 La-140 Mn-54 1.90E+04 1.50E+02 3.OOE+00

8. 1OE+02 1.00E+02 1.50E+01 6.90E+02 3.50E+02 5.70E+01 I

SE L14662-07 11/19/2008 Nb-95 -6.60E+0 1 2.20E+01 9.70E+01 SE SE L14662-07 L14662-07 11/19/2008 11/19/2008 11/19/2008 Ru-103 Ru-106 3.OOE+00 1.00E+02 0.OOE+00 2.OOE+01 1.50E+02 2.70E+01 7.40E+01 5.40E+02 1.20E+02 I

SE L14662-07 Sb-124 SE SE SE L14662-07 L14662-07 L14662-07 11/19/2008 11/19/2008 11/19/2008 Sb-125 Se-75 Zn-65

-2.OOE+01

-3.30E+01

-1.08E+02 3.60E+01 1.80E+01 4.60E+01 1.50E+02 7.OOE+01 1.90E+02 I

SE L14662-07 11/19/2008 Zr-95 1.90E+01 3.60E+0I 1.30E+02 SE SE L14662-08 L14662-08 11/19/2008 11/19/2008 AcTh-228 Ag-108m 2.78E+02

-3.80E+00

-I.1OE+01 5.40E+0I 9.90E+00 1.1 OE+01 1.90E+02 3.60E+01 4.20E+01 I

SE L14662-08 11/19/2008 Ag-I 10m SE SE SE L14662-08 L14662-08 L14662-08 11/19/2008 11/19/2008 11/19/2008 Ba-140 Be-7 Ce-141

-1. 1OE+02 5.OOE+01

-4.10E+01 1.60E+02 1.30E+02 3.OOE+01 6.OOE+02 4.50E+02 1.1OE+02 I

SE L14662-08 11/19/2008 Ce-144 -7.10E+01 7.90E+01 2.80E+02 SE L14662-08 11/19/2008 Co-57 4.OOE+00 1.00E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 3.40E+01 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 154

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 8 L14662-08 11/19/2008 Co-58 -2.20E+01 1.50E+01 5.60E+01 SE 8 L14662-08 11/19/2008 Co-60 2.OOE+00 1.30E+01 4.70E+01 SE 8 L14662-08 11/19/2008 Cr-5I 8.OOE+01 1.70E+02 5.90E+02 SE 8 L14662-08 11/19/2008 Cs-134 2.30E+01 1.40E+01 4.70E+01 SE 8 L14662-08 11/19/2008 Cs-137 1.20E+01 1.20E+01 3.90E+01 SE 8 L14662-08 11/19/2008 Fe-59 8.80E+01 4.30E+01 1.40E+02 SE 8 L14662-08 11/19/2008 1-131 -1.27E+02 9.20E+01 3.50E+02 SE 8 L14662-08 11/19/2008 K-40 1.92E+04 6.OOE+02 4.50E+02 SE 8 L14662-08 11/19/2008 La-140 -8.50E+01 7.30E+01 2.80E+02 SE 8 L14662-08 11/19/2008 Mn-54 1.80E+01 1.30E+01 4.20E+01 SE 8 L14662-08 11/19/2008 Nb-95 -2.60E+01 2.OOE+01 7.70E+01 SE 8 L14662-08 11/19/2008 Ru-103 3.OOE+00 1.80E+01 6.30E+01 SE 8 L14662-08 11/19/2008 Ru-106 -4.OOE+01 1.1 OE+02 4. 1OE+02 SE 8 L14662-08 11/19/2008 Sb-124 6.OOE+00 2.OOE+01 7.70E+01 SE 8 L14662-08 11/19/2008 Sb-125 2.40E+01 3.10E+01 1.1OE+02 SE 8 L14662-08 11/19/2008 Se-75 -2.90E+01 1.60E+01 6.OOE+01 SE 8 L14662-08 11/19/2008 Zn-65 8.20E+01 5.70E+01 1.90E+02 SE 8 L14662-08 11/19/2008 Zr-95 2.OOE+00 2.1OE+01 9.40E+01 SE 8 L14662-09 11/19/2008 AcTh-228 3.15E+02 2.10E+01 8.40E+01 SE 8 L14662-09 11/19/2008 Ag- 108m 2.OOE+00 4.1OE+00 1.40E+01 SE 8 L14662-09 11/19/2008 Ag-110m 8.OOE-01 4.90E+00 1.70E+01 SE 8 L14662-09 11/19/2008 Ba-140 -1.30E+01 7.50E+01 1.80E+02 SE 8 L14662-09 11/19/2008 Be-7 -2.1 OE+01 5.30E+01 1.80E+02 SE 8 L14662-09 11/19/2008 Ce-141 2.70E+01 1.30E+01 4.20E+01 SE 8 L14662-09 11/19/2008 Ce- 144 -7.OOE+00 3.40E+01 1.20E+02 SE 8 L14662-09 11/19/2008 Co-57 6.20E+00 4.40E+00 1.40E+01 SE 8 L14662-09 11/19/2008 Co-58 -5.40E+00 6.20E+00 2.20E+01 SE 8 L14662-09 11/19/2008 Co-60 1.00E+00 5.40E+00 1.90E+01 SE 8 L14662-09 11/19/2008 Cr-51 -6.60E+01 7.70E+01 2.70E+02 SE 8 L14662-09 11/19/2008 Cs-134 4.60E+00 7. IOE+00 2.60E+01 SE 8 L14662-09 11/19/2008 Cs-137 -5.40E+00 5.20E+00 1.80E+01 SE 8 L14662-09 11/19/2008 Fe-59 -5.OOE+00 1.80E+01 6.20E+01 SE 8 L14662-09 11/19/2008 1-131 -4.OOE+00 4.90E+01 1.70E+02 SE 8 L14662-09 11/19/2008 K-40 2.04E+04 2.70E+02 1.80E+02 SE 8 L14662-09 11/19/2008 La-140 -5.OOE+00 3.70E+01 1.30E+02 SE 8 L14662-09 11/19/2008 Mn-54 -7.90E+00 5.40E+00 1.90E+01 SE 8 L14662-09 11/19/2008 Nb-95 -1.00E+00 1.30E+01 4.40E+01 SE 8 L14662-09 11/19/2008 Ru-103 -6.30E+00 7.90E+00 2.70E+01 SE 8 L14662-09 11/19/2008 Ru-106 -2.70E+01 4.80E+01 1.70E+02 SE 8 L14662-09 11/19/2008 Sb-124 -1.23E+01 8.70E+00 3.40E+01 SE 8 L14662-09 11/19/2008 Sb-125 2.90E+01 1.30E+01 4.30E+01 SE 8 L14662-09 11/19/2008 Se-75 2.30E+00 7.40E+00 2.50E+01 SE 8 L14662-09 11/19/2008 Zn-65 4.OOE+00 2.70E+01 8.90E+01 SE 8 L14662-09 11/19/2008 Zr-95 2.50E+01 1.20E+01 4.OOE+01 SE 52 L13984-10 5/28/2008 AcTh-228 2.55E+03 2.1 OE+02 5.70E+02 SE 52 L13984-10 5/28/2008 Ag-108m 3.60E+01 4.40E+01 1.50E+02 SE 52 L13984-10 5/28/2008 Ag-1 10m -1.20E+01 4.30E+01 1.60E+02 SE 52 L13984-10 5/28/2008 Ba-140 -3.20E+02 3.OOE+02 1.20E+03 SE 52 L13984-10 5/28/2008 Be-7 1.70E+02 4.60E+02 1.60E+03 SE 52 L13984-10 5/28/2008 Ce-141 -5.OOE+01 1.00E+02 3.50E+02 SE 52 L13984-10 5/28/2008 Ce-144 0.OOE+00 3.30E+02 1.20E+03 SE 52 L13984-10 5/28/2008 Co-57 -8.20E+01 4.30E+01 1.60E+02 SE 52 L13984-10 5/28/2008 Co-58 2.10E+01 4.50E+01 1.60E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 155

TYPE Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

U SE SE 52 52 L13984-10 L13984-10 5/28/2008 5/28/2008 Co-60 Cr-51

-8.OOE+00

-2.OOE+02 3.OOE+01 5.70E+02 1.30E+02 2.OOE+03 I

SE 52 L13984-10 5/28/2008 Cs-134 2.50E+0 I 3.OOE+01 1.30E+02 SE SE 52 52 L13984-10 L13984-10 5/28/2008 5/28/2008 Cs-137 Fe-59

-1.90E+01 1.07E+02 4.70E+0 I 6.60E+0 I 1.50E+02 1.70E+02 2.1OE+02 5.40E+02 I

SE 52 L13984-10 5/28/2008 1-131 4.OOE+01 I

SE 52 L13984-10 5/28/2008 K-40 1.16E+04 1.1OE+03 1.70E+03 SE 52 L13984-10 5/28/2008 La-140 4.70E+02 1.80E+02 5.40E+02 SE 52 L13984-10 5/28/2008 Mn-54 -1.90E+01 4.10E+01 1.60E+02 SE 52 L13984-10 5/28/2008 Nb-95 -8.60E+01 5.50E+01 2.20E+02 SE SE 52 52 L13984-10 L13984-10 5/28/2008 5/28/2008 Ru-103 Ru-106

-2.OOE+00

- 1.1OE+02 4.40E+01 3.70E+02 3.40E+01 1.60E+02 1.40E+03 6.40E+0I I

SE 52 L13984-10 5/28/2008 Sb-124 4.70E+01 SE SE SE 52 52 52 L13984-10 L13984-10 L13984-10 5/28/2008 5/28/2008 5/28/2008 Sb-125 Se-75 Zn-65 2.OOE+02

-3.20E+01

-3.OOE+01 1.30E+02 5.90E+01 1.70E+02 4.30E+02

2. 1OE+02 6.OOE+02 I

SE 52 L13984-10 5/28/2008 Zr-95 -6.20E+0 I 8.80E+01 3.30E+02 SE SE 52 52 L13984-11 L13984-11 5/28/2008 5/28/2008 AcTh-228 Ag-108ni 1.35E+03

-I.IOE+01 3.90E+0 I 1.90E+02 2.60E+01 3.70E+0 I 6.50E+02 1.00E+02 1.30E+02 I

SE 52 L13984-11 5/28/2008 Ag-1 I10m SE SE SE 52 52 52 L13984-11 L13984-11 L13984-11 5/28/2008 5/28/2008 5/28/2008 Ba-140 Be-7 Ce-I141 1.60E+02 2.50E+02

-7.80E+01 2.70E+02 3.70E+02 6.80E+0 1 9.80E+02 1.30E+03 2.50E+02 I

SE 52 L13984-11 5/28/2008 Ce- 144 9.OOE+01 2.OOE+02 6.90E+02 SE SE 52 52 L13984-11 L13984-11 5/28/2008 5/28/2008 5/28/2008 Co-57 Co-58 1.80E+01 2.30E+01 2.20E+01 2.50E+01 3.40E+0I 3.20E+01 8.60E+0I 1.30E+02 1.30E+02 I

SE 52 L13984-11 Co-60 SE SE SE 52 52 52 L13984-11 L13984-11 L13984-11 5/28/2008 5/28/2008 5/28/2008 Cr-51 Cs-134 Cs-137 2.80E+02

-4.10E+01 0.OOE+00 3.70E+02 3.OOE+01 3.90E+01 1.30E+03 1.30E+02 1.50E+02 I

SE 52 L13984-11 5/28/2008 Fe-59 2.17E+02 8.70E+01 2.20E+02 SE SE 52 52 L13984-11 L13984-11 5/28/2008 5/28/2008 1-131 K-40

-1.00E+01 1.33E+04 1.1OE+02 1.30E+03 1.60E+02

4. 1OE+02 1.40E+03 6.30E+02

I SE 52 L13984-11 5/28/2008 La-140 -8.OOE+01 SE SE SE 52 52 52 L13984-11 L13984-11 L13984-11 5/28/2008 5/28/2008 5/28/2008 Mn-54 Nb-95 Ru-103 4.OOE+00

-7.70E+01 2.50E+01 2.50E+01 6.30E+01 3.70E+0I 1.00E+02 2.60E+02 1.40E+02 I

SE 52 L13984-11 5/28/2008 Ru-106 -2.80E+02 2.40E+02 1.1OE+03 SE SE 52 52 L13984-11 L13984-11 5/28/2008 5/28/2008 5/28/2008 Sb-124 Sb-125 1.49E+02

-8.50E+01

-4.30E+01 9.10E+01 9.40E+01 3.80E+01 2.70E+02 3.80E+02 1.50E+02 I

SE 52 L13984-11 Se-75 SE SE SE 52 52 52 L13984-11 L13984-11 L13984-12 5/28/2008 5/28/2008 5/28/2008 Zn-65 Zr-95 AcTh-228 3.30E+02

-3.OOE+00 1.33E+03 1.60E+02 5.30E+01 1.90E+02 5.1OE+02 2.OOE+02 6.90E+02

I SE 52 L13984-12 5/28/2008 Ag- 108m 2.40E+01 2.40E+0 I 8.40E+01 SE SE 52 52 L13984-12 L13984-12 5/28/2008 5/28/2008 Ag-110m Ba-140 4.90E+0 1

-1.70E+02 1.40E+02 3.80E+01 2.90E+02 3.50E+02 1.30E+02 1.20E+03 1.30E+03 I

SE 52 L13984-12 5/28/2008 Be-7 SE SE SE 52 52 52 L13984-12 L13984-12 L13984-12 5/28/2008 5/28/2008 5/28/2008 Ce- 141 Ce- 144 Co-57

-4.20E+01 2.OOE+02 2.50E+01 7.70E+01 2.40E+02 3.30E+01 2.80E+02 8.20E+02 1.1OE+02 I

SE 52 L13984-12 5/28/2008 Co-58 -2.40E+01 4.50E+01 1.80E+02 SE 52 L13984-12 5/28/2008 Co-60 3.30E+01 4.60E+01 1.70E+02 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 156

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN 'DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 52 L13984-12 5/28/2008 Cr-51 8.20E+02 4.OOE+02 1.30E+03 SE 52 L13984-12 5/28/2008 Cs-134 1.04E+02 4.70E+01 1.30E+02 SE 52 L13984-12 5/28/2008 Cs-137 -2.40E+0 I 4.20E+01 1.70E+02 SE 52 L13984-12 5/28/2008 Fe-59 -7.60E+0 I 7.60E+0 1 3.50E+02 SE 52 L13984-12 5/28/2008 1-131 4.OOE+01 1.40E+02 5.1OE+02 SE 52 L13984-12 5/28/2008 K-40 1.30E+04 1.40E+03 1.70E+03

SE 52 L13984-12 5/28/2008 La-140 -6.OOE+01 1.60E+02 6.30E+02 SE 52 L13984-12 5/28/2008 Mn-54 7.OOE+00 3.OOE+01 1.20E+02 SE 52 L13984-12 5/28/2008 Nb-95 2.10E+01 4.20E+01 1.60E+02 SE 52 L13984-12 5/28/2008 Ru-103 -4.40E+01 4.40E+01 1.80E+02 SE 52 L13984-12 5/28/2008 Ru-106 -7.80E+02 3.80E+02 1.70E+03 SE 52 L13984-12 .5/28/2008 Sb-124 -7.70E+01 7.70E+0I 4.1 OE+02 SE 52 L13984-12 5/28/2008 Sb-125 1.65E+02 9.90E+01 3.20E+02 SE 52 L13984-12 5/28/2008 Se-75 -6.60E+01 4.60E+01 1.80E+02 SE 52 L13984-12 5/28/2008 Zn-65 2.90E+02 2. 1OE+02 7.OOE+02 SE 52 L13984-12 5/28/2008 Zr-95 -4.OOE+00 6.70E+01 3.30E+02 SE 52 L14662-10 12/3/2008 AcTh-228 2.82E+03 6.30E+01 1.80E+02

SE 52 L14662-10 12/3/2008 Ag-108m -1.30E+01 1.20E+01 4.10E+01 SE 52 L14662-10 12/3/2008 Ag-110m 2.40E+01 1.20E+01 4.10E+01 SE 52 L14662-10 12/3/2008 Ba-140 -1.20E+02 1.00E+02 3.60E+02 SE 52 L14662-10 12/3/2008 B3e-7 2.40E+02 1.30E+02 4. 1OE+02 SE 52 L14662-10 12/3/2008 Ce-141 4.80E+01 4.40E+01 1.40E+02 SE 52 L14662-10 12/3/2008 Ce-144 7.OOE+01 1.00E+02 3.40E+02 SE 52 L14662-10 12/3/2008 Co-57 1.50E+01 1.30E+01 4.40E+01 SE 52 L14662-10 12/3/2008 Co-58 -4.OOE+00 2.1OE+01 7.20E+01 SE 52 L14662-10 12/3/2008 Co-60 3.OOE+00 1.20E+01 4.20E+01 SE 52 L14662-10 12/3/2008 Cr-51 3.80E+02 1.60E+02 5.20E+02 SE 52 L14662-10 12/3/2008 Cs-134 -1.50E+01 1.1 OE+01 4.60E+01 SE 52 L14662-10 12/3/2008 Cs-137 -5.OOE+00 2.60E+01 8.80E+01 SE 52 L14662-10 12/3/2008 Fe-59 -1.80E+01 2.90E+01 1.00E+02 SE 52 L14662-10 12/3/2008 1-131 -2.40E+01 4.40E+0 I 1.50E+02 SE 52 L14662-10 12/3/2008 K-40 1.27E+04 3.80E+02 5.1OE+02

SE 52 L14662-10 12/3/2008 La-140 5.90E+01 5.OOE+01 1.70E+02 SE 52 L14662-10 12/3/2008 Mn-54 3.OOE+00 1.40E+01 4.90E+01 SE 52 L14662-10 12/3/2008 Nb-95 3.30E+01 2.50E+01 8.40E+01 SE 52 L14662 -10 12/3/2008 Ru-103 -7.OOE+00 1.70E+01 5.80E+01 SE 52 L14662-10 12/3/2008 Ru-106 1.1OE+02 1.30E+02 4.30E+02 SE 52 L14662-10 12/3/2008 Sb-124 -1.40E+01 2.40E+0I 8.80E+01 SE 52 L14662-10 12/3/2008 Sb-125 3.60E+01 3.60E+0I 1.20E+02 SE 52 L14662-10 12/3/2008 Se-75 -4.20E+01 2.OOE+01 7.OOE+01 SE 52 L14662-10 12/3/2008 Zn-65 4.10E+01 6.20E+01 2.1OE+02 SE 52 L14662-10 12/3/2008 Zr-95 5.60E+01 2.70E+01 8.70E+01 SE 52 L14662-11 12/3/2008 AcTh-228 1.51 E+03 9.40E+01 2.70E+02

SE 52 L14662-11 12/3/2008 Ag-108m -6.60E+00 1.70E+01 6.20E+01 SE 52 L14662-11 12/3/2008 Ag-I 10m 0.OOE+00 2.OOE+01 7.10E+01 SE 52 L14662-11 12/3/2008 Ba-140 1.40E+02 1.30E+02 4.30E+02 SE 52 L14662-11 12/3/2008 Be-7 7.OOE+01 1.70E+02 5.90E+02 SE 52 L14662-11 12/3/2008 Ce-141 3.80E+01 3.70E+01 1.20E+02 SE 52 L14662-11 12/3/2008 Ce-144 -2.OOE+01 1.30E+02 4.60E+02 SE 52 L14662-11 12/3/2008 Co-57 -9.OOE+00 1.70E+01 5.70E+01 SE 52 L14662-11 12/3/2008 Co-58 -2.OOE+01 2.OOE+01 7.50E+01 SE 52 L14662-11 12/3/2008 Co-60 -1.20E+01 1.70E+01 7.OOE+01 SE 52 L14662-11 12/3/2008 Cr-51 -1.20E+02 2.20E+02 7.80E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 157

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATI6N LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

U SE SE 52 52 L14662-11 L14662-11 12/3/2008 12/3/2008 Cs-134 Cs-137 1.70E+01

-2.60E+0 1 2.80E+01 2.1OE+01 1.001E+02 8.1OE+01 I

SE 52 L14662-11 12/3/2008 Fe-59 2.40E+01 4.60E+01 1.60E+02 SE SE 52 52 L14662-1 L14662-1 12/3/2008 12/3/2008 1-131 K-40 8.50E+01 1.24E+04 1.66E+02 5.40E+01 6.80E+02 7.20E+01 1.80E+02 8.20E+02 2.30E+02

I SE 52 L14662-1I 12/3/2008 La-140 SE SE SE 52 52 52 L14662-1I L14662-11 L14662-11 12/3/2008 12/3/2008 12/3/2008 Mn-54 Nb-95 Ru-103 2.00E+00 1.30E+01 8.OOE+00 1.90E+01 2.70E+01 2.20E+01 6.90E+0 I 9.30E+01 7.70E+01 I

SE 52 L14662-11 12/3/2008 Ru-106 2.10E+02 1.90E+02 6.40E+02 SE SE 52 52 L14662-1 L14662-11 12/3/2008 12/3/2008 Sb-124 Sb-125 4.70E+01 2.30E+01

-1.80E+01 4.30E+01 5.30E+01 2.40E+01 1.50E+02 1.90E+02 8.50E+01 U

SE 52 L14662-11 12/3/2008 Se-75 SE 52 L14662-11 12/3/2008 Zn-65 - 1.00E+01 9.90E+01 3.40E+02 SE 52 L14662-11 12/3/2008 Zr-95 3.80E+01 3.60E+01 1.20E+02 SE 52 L14662-12 12/3/2008 AcTh-228 1.08E+03 6.80E+01 1.90E+02 SE 52 L14662-12 12/3/2008 Ag-108m 0.OOE+00 1.20E+01 4.30E+01 SE SE 52 52 L14662-12 L14662-12 12/3/2008 12/3/2008 12/3/2008 Ag-110m Ba-140 7.OOE+00 1.12E+02 1.OOE+01 1.40E+01 9.60E+01 1.30E+02 4.70E+01 3.20E+02 4.50E+02 I

SE 52 L14662-12 Be-7 SE SE SE 52 52 52 L14662-12 L14662-12 L14662-12 12/3/2008 12/3/2008 12/3/2008 Ce-141 Ce-144 Co-57

-2.30E+01 1.OOE+02 1.40E+01 2.90E+01 1.1OE+02 1.30E+01 1.001E+02 3.60E+02 4.40E+01 I

SE 52 L14662-12 12/3/2008 Co-58 -2.40E+01 1.50E+01 5.80E+01 SE SE SE 52 52 52 L14662-12 L14662-12 L14662-12 12/3/2008 12/3/2008 12/3/2008 Co-60 Cr-51 Cs-134

-2.80E+01 1.40E+02

-1.IOE+01 1.50E+01 1.60E+02 1.90E+01 6.20E+01 5.50E+02 7.OOE+01 U

SE SE SE 52 52 52 L14662-12 L14662-12 L14662-12 12/3/2008 12/3/2008 12/3/2008 Cs-137 Fe-59 1-131

-2.00E+01

-2.00E+01 5.90E+0 I 1.40E+01 3.30E+01 3.90E+01 5.50E+0I 1.20E+02 1.30E+02 I

SE 52 L14662-12 12/3/2008 K-40 1.32E+04 5.30E+02 5.80E+02 SE SE 52 52 L14662-12 L14662-12 L14662-12 12/3/2008 12/3/2008 12/3/2008 La-140 Mn-54 6.90E+0 I 1.OOE+00 4.40E+01 4.70E+01 1.60E+01 2.00E+01 1.60E+02 5.50E+01 6.60E+01 I

SE 52 Nb-95 SE SE SE 52 52 52 L14662-12 L14662-12 L14662-12 12/3/2008 12/3/2008 12/3/2008 Ru- 103 Ru-106 Sb-124 2.1OE+01

-3.1OE+02 1.1OE+01 1.70E+01 1.40E+02 2.OOE+01 5.70E+0 1 5.40E+02 7.70E+01 I

SE 52 L14662-12 12/3/2008 Sb-125 -8.OOE+01 3.80E+0 1 1.40E+02 SE SE 52 52 L14662-12 L14662-12 12/3/2008 12/3/2008 12/3/2008 Se-75 Zn-65 Zr-95 1.70E+01

-1.40E+01 5.90E+01 2.1OE+0I 6.80E+01 2.90E+01 7.20E+01 2.30E+02 9.50E+01 1

SE 52 L14662-12 SE SE SE 57 57 57 L13984-13 L13984-13 L13984-13 5/22/2008 5/22/2008 5/22/2008 AcTh-228 Ag-108m Ag-110m 1.81E+02

-7.OOE+00 1.001E+0 1 9.10E+01 2.00E+01 1.90E+01 2.80E+02 7.80E+01 7.20E+0 1 I

SE 57 L13984-13 5/22/2008 Ba-140 1.50E+02 1.80E+02 6.70E+02 SE SE 57 57 L13984-13 L13984-13 L13984-13 5/22/2008 5/22/2008 5/22/2008 Be-7 Ce-141 1.30E+02

-1.23E+02 1.40E+02 2.OOE+02 5.OOE+01 1.50E+02 7.20E+02 2.OOE+02 5.20E+02 I

SE 57 Ce-144 SE SE SE 57 57 57 L13984-13 L13984-13 L13984-13 5/22/2008 5/22/2008 5/22/2008 Co-57 Co-58 Co-60

-6.OOE+00 4.80E+0 I

-2.70E+0 1 1.80E+01 2.50E+01 2.70E+0 1 6.70E+0 I 7.90E+0 I 1.20E+02 I

SE 57 L13984-13 5/22/2008 Cr-51 -4.1 OE+02 2.70E+02 1.10E+03 SE 57 L13984-13 5/22/2008 Cs-134 1.OOE+00 2.20E+01 8.30E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

158

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 57 L13984-13 5/22/2008 Cs-137 0.OOE+00 1.80E+01 7.30E+01 SE 57 L13984-13 5/22/2008 Fe-59 -7.70E+01 6.30E+01 2.70E+02 SE 57 L13984-13 5/22/2008 1-131 0.OOE+00 1.1OE+02 4.20E+02 SE 57 L13984-13 5/22/2008 K-40 1.44E+04 1.00E+03 1.20E+03 SE 57 L13984-13 5/22/2008 La-140 -7.20E+01 9.80E+01 4.20E+02 SE 57 L13984-13 5/22/2008 Mn-54 1.00E+01 2.20E+01 8.20E+01 SE 57 L13984-13 5/22/2008 Nb-95 1.60E+01 3.40E+01 1.30E+02 SE 57 L13984-13 5/22/2008 Ru-103 -6.OOE+00 2.10E+01 8.80E+01 SE 57 L13984-13 5/22/2008 Ru-106 -1.50E+02 1.90E+02 7.90E+02 SE 57 L13984-13 5/22/2008 Sb-124 2.1OE+0I 3.60E+01 1.50E+02 SE 57 L13984-13 5/22/2008 Sb-125 -2.20E+01 5.40E+01 2.1OE+02 SE 57 L13984-13 5/22/2008 Se-75 -2.60E+0 I 3.1 OE+0 I 1.20E+02 SE 57 L13984-13 5/22/2008 Zn-65 - 1.00E+02 6.90E+0I 2.90E+02 SE 57 L13984-13 5/22/2008 Zr-95 -4.40E+0 I 4.20E+01 2.1OE+02 SE 57 L13984-14 5/22/2008 AcTh-228 4.OOE+02 1.1OE+02 3.20E+02 SE 57 L13984-14 5/22/2008 Ag-108m -1.60E+01 2.OOE+01 8.40E+01 SE 57 L13984-14 5/22/2008 Ag-110m -1.70E+01 2.OOE+01 8.80E+01 SE 57 L13984-14 5/22/2008 Ba-140 -5.06E+01 2.OOE+02 8.40E+02 SE 57 L13984-14 5/22/2008 Be-7 6.OOE+01 1.90E+02 7.30E+02 SE 57 L13984-14 5/22/2008 Ce-141 2.20E+0I 5.1OE+0I 1.80E+02 SE 57 L13984-14 5/22/2008 Ce-144 -2.70E+02 1.50E+02 6.1OE+02 SE 57 L13984-14 5/22/2008 Co-57 -2.OOE+01 2.20E+01 8.10E+01 SE 57 L13984-14 5/22/2008 Co-58 2.80E+01 2.40E+0 1 8.40E+0 I SE 57 L13984-14 5/22/2008 Co-60 -2.40E+01 1.80E+01 9.50E+01 SE 57 L13984-14 5/22/2008 Cr-51 -7.10E+02 3.20E+02 1.40E+03 SE 57 L13984-14 5/22/2008 Cs-134 1.90E+01 3.1OE+01 1.00E+02 SE 57 L13984-14 5/22/2008 Cs-137 -2.40E+0 I 2.30E+0 I 1.00E+02 SE 57 L13984-14 5/22/2008 Fe-59 -6.80E+01 6.60E+01 2.90E+02 SE 57 L13984-14 5/22/2008 1-131 -1.00E+02 1.30E+02 5.30E+02 SE 57 L13984-14 5/22/2008 K-40 1.2]E+04 1.00E+03 9.20E+02 SE 57 L13984-14 5/22/2008 La-140 4.OOE+01 1.40E+02 5.20E+02 SE 57 L13984-14 5/22/2008 Mn-54 1.20E+01 2.10E+01 7.90E+01 SE 57 L13984-14 5/22/2008 Nb-95 6.OOE+00 3.40E+01 1.30E+02 SE 57 L13984-14 5/22/2008 Ru-103 -2.30E+01 2.80E+01 1.20E+02 SE 57 L13984-14 5/22/2008 Ru-106 5.OOE+01 1.70E+02 6.60E+02 SE 57 L13984-14 5/22/2008 Sb-124 2.40E+0I 2.40E+01 6.50E+01 SE 57 L13984-14 5/22/2008 Sb-125 -2.40E+01 6.50E+01 2.60E+02 SE 57 L13984-14 5/22/2008 Se-75 -1.00E+01 3.1OE+0I 1.20E+02 SE 57 L13984-14 5/22/2008 Zn-65 -1.57E+02 7.OOE+01 3.20E+02 SE 57 L13984-14 5/22/2008 Zr-95 -3.20E+01 4.10E+01 1.80E+02 SE 57 L13984-15 5/22/2008 AcTh-228 1.00E+02 1.30E+02 4.90E+02 SE 57 L13984-15 5/22/2008 Ag- 108m 1.70E+01 2.40E+0I 8.60E+01 SE 57 L13984-15 5/22/2008 Ag-1I Om - 1.60E+01 2.30E+01 1.IOE+02 SE 57 L13984-15 5/22/2008 Ba-140 8.OOE+01 2.80E+02 1.IOE+03 SE 57 L13984-15 5/22/2008 Be-7 -1.40E+02 2.OOE+02 9.20E+02 sE 57 L13984-15 5/22/2008 Ce- 141 -4.90E+01 5.1OE+0I 2.OOE+02 SE 57 L13984-15 5/22/2008 Ce-144 9.OOE+01 1.40E+02 5.1OE+02 SE 57 L13984-15 5/22/2008 Co-57 3.70E+0I 1.70E+01 5.20E+01 SE 57 L13984-15 5/22/2008 Co-58 4.30E+01 2.1OE+0I 2.90E+01 SE 57 L13984-15 5/22/2008 Co-60 -3.OOE+00 2.80E+01 1.30E+02 SE 57 L13984-15 5/22/2008 Cr-51 8.OOE+01 3.20E+02 1.20E+03 SE 57 L13984-15 5/22/2008 Cs-134 -1 .40E+01 2.40E+0 I 1.1OE+02 SE 57 L13984-15 5/22/2008 Cs-137 1.70E+01 2.70E+0I 1.00E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 159

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I SE SE L13984-15 L13984-15 5/22/2008 5/22/2008 Fe-59 1-131 2.70E+01 9.OOE+01 9.00E+01 1.40E+02 3.60E+02 5.1OE+02 I

SE L13984-15 5/22/2008 K-40 1.32E+04 1.40E+03 1.70E+03

SE SE L13984-15 L13984-15 5/22/2008 5/22/2008 La- 140 Mn-54

-1.60E+02

-1.50E+01

-6.40E+01 1.80E+02 2.70E+01 5.70E+01 7.40E+02 1.20E+02 2.40E+02 U

SE L13984-15 5/22/2008 Nb-95 SE SE SE L13984-15 L13984-15 L13984-15 5/22/2008 5/22/2008 5/22/2008 Ru-103 Ru-106 Sb-124 1.90E+01 2.90E+02 4.10E+01 2.70E+0I 2.70E+02 9.20E+0 1 1.00E+02 9.60E+02 3.80E+02 I

SE L13984-15 5/22/2008 Sb-125 1.051E+02 7.40E+01 2.50E+02 SE SE L13984-15 L13984-15 5/22/2008 5/22/2008 Se-75 Zn-65

-7.00E+00

-4.70E+0 I

-8.80E+01 2.70E+01 9.90E+01 5.00E+01 1.1OE+02 4.1OE+02 3.1OE+02 I

SE L13984-15 5/22/2008 Zr-95 1.90E+02 I

SE L14662-13 11/19/2008 AcTh-228 3.87E+02 4.80E+01 SE L14662-13 11/19/2008 Ag-108m 2.80E+00 9. 1OE+00 3.20E+0I SE L14662-13 11/19/2008 Ag-110m 4.OOE+00 1.10E+01 3.90E+01 SE L14662-13 11/19/2008 Ba-140 - 1.1OE+02 1.30E+02 5.OOE+02 SE SE L14662-13 L14662-13 L14662-13 11/19/2008 11/19/2008 11/19/2008 Be-7 Ce-I141 Ce- 144 0.OOE+00

-2.50E+01

-2.90E+01 1.20E+02 2.90E+01 7.70E+01 4.20E+02 1.00E+02 2.70E+02 I

SE SE SE SE L14662-13 L14662-13 L14662-13 11/19/2008 11/19/2008 11/19/2008 Co-57 Co-58 Co-60

-5.20E+00

-1.90E+01

-2.OOE+00 9.50E+00 1.30E+01 1.101E+01 3.30E+01 4.90E+01 4.1OE+01 I

SE L14662-13 11/19/2008 Cr-51 -1.00E+01 1.50E+02 5.20E+02 SE SE SE L14662-13 L14662-13 L14662-13 11/19/2008 11/19/2008 11/19/2008 Cs-134 Cs-137 Fe-59 1.00E+01

-1.50E+01 1.1 OE+0I 1.20E+01 1.20E+01 2.80E+01 4.00E+01 4.40E+01 9.90E+0 I I

SE SE SE L14662-13 L14662-13 L14662-13 11/19/2008 11/19/2008 11/19/2008 1-131 K-40 La- 140

-2.70E+0 I 1.41E+04 8.20E+01 9.80E+0 I 5.OOE+02 7.60E+01 3.50E+02 4.60E+02 2.60E+02

k I

SE L14662-13 11/19/2008 Mn-54 2.30E+01 1.101E+0 1 3.50E+01 SE SE L14662-13 L14662-13 L14662-13 11/19/2008 11/19/2008 11/19/2008 Nb-95 Ru-103 Ru-106

-2.10E+01 1.10E+01 2.10E+01 1.70E+01 1.50E+01 9.50E+01 6.50E+0 I 5.30E+01 3.40E+02 I

SE SE SE SE L14662-13 L14662-13 L14662-13 11/19/2008 11/19/2008 11/19/2008 Sb-124 Sb-125 Se-75 5.OOE+00 3.30E+01

-3.OOE+00 1.80E+01 3.10E+01 1.40E+01 7.OOE+01 1.00E+02

5. 1OE+0I I

SE L14662-13 11/19/2008 Zn-65 1.20E+01 2.90E+01 1.40E+02 SE SE SE L14662-13 L14662-14 L14662-14 11/19/2008 11/19/2008 11/19/2008 Zr-95 AcTh-228 Ag-108m

-8.OOE+00 2.29E+02

-2.OOE+00 2.10E+01 9.50E+01 1.50E+01 7.80E+01 3.001E+02 5.50E+01 I

SE SE SE L14662-14 L14662-14 L14662-14 11/19/2008 11/19/2008 11/19/2008 Ag-I 10m Ba-140 Be-7 8.OOE+00

-1.1OE+02

5. 1OE+02 1.50E+01 1.80E+02 1.90E+02 5.50E+01 7.10E+02 5.60E+02 I

SE L14662-14 11/19/2008 Ce- 141 -5.OOE+00 4.20E+01 1.50E+02 SE SE L14662-14 L14662-14 L14662-14 11/19/2008 11/19/2008 11/19/2008 Ce- 144 Co-57 Co-58

-2.OOE+02

- 1.00E+00 2.80E+01 1.1 OE+02 1.30E+01 2.10E+01

4. 1OE+02 4.70E+01 7.10E+01 I

SE SE SE SE L14662-14 L14662-14 L14662-14 11/19/2008 11/19/2008 11/19/2008 Co-60 Cr-51 Cs-134

-2.60E+0 I 1.50E+02 2.50E+01 1.50E+01 2.40E+02 1.50E+01 7.10E+01 8.30E+02 6.00E+01 I

SE L14662-14 11/19/2008 Cs-137 -1.10E+01 1.60E+01 6.30E+01 SE L14662-14 11/19/2008 Fe-59 2.90E+0I 5.80E+0 I 2. 1OE+02 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 160

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 57 L14662-14 11/19/2008 1-131 -1.60E+02 1.60E+02 6.20E+02 SE 57 L14662-14 11/19/2008 K-40 1.40E+04 7.40E+02 7.OOE+02 SE 57 L14662-14 11/19/2008 La-140 -2.OOE+02 1.20E+02 5.OOE+02 SE 57 L14662-14 11/19/2008 Mn-54 -1.50E+01 1.40E+01 5.80E+01 SE 57 L14662-14 11/19/2008 Nb-95 1.30E+01 2.90E+01 1.00E+02 SE 57 L14662-14 11/19/2008 Ru-103 5.90E+01 2.1OE+01 5.80E+01 SE 57 L14662-14 11/19/2008 Ru-106 1.00E+02 1.50E+02 5.40E+02 SE 57 L14662-14 11/19/2008 Sb-124 2.40E+01 2.40E+01 8.90E+01 SE 57 L14662-14 11/19/2008 Sb-125 -2.60E+01 4.80E+01 1.80E+02 SE 57 L14662-14 11/19/2008 Se-75 -8.OOE+00 2.30E+01 8.30E+01 SE 57 L14662-14 11/19/2008 Zn-65 -8.80E+01 4.70E+01 1.90E+02 SE 57 L14662-14 11/19/2008 Zr-95 -5.90E+01 2.70E+01 1.40E+02 SE 57 L14662-15 11/19/2008 AcTh-228 2.68E+02 9.20E+01 2.80E+02 SE 57 L14662-15 11/19/2008 Ag- 108m 2.OOE+00 1.40E+01 5.I0E+01 SE 57 L14662-15 11/19/2008 Ag-110m 7.OOE+00 1.30E+01 4.90E+01 SE 57 L14662-15 11/19/2008 Ba-140 -2.20E+02 2.70E+02 1.00E+03 SE 57 L14662-15 11/19/2008 Be-7 8.OOE+01 1.60E+02 5.60E+02 SE 57 L14662-15 11/19/2008 Ce-141 3.40E+01 4.20E+01 1.40E+02 SE 57 L14662-15 11/19/2008 Ce-144 -1.50E+02 1.1 OE+02 4.20E+02 SE 57 L14662-15 11/19/2008 Co-57 0.OOE+00 1.50E+01 5.1OE+01 SE 57 L14662-15 11/19/2008 Co-58 -1.10E+01 2.1OE+01 8.10E+01 SE 57 L14662-15 11/19/2008 Co-60 3.60E+01 1.40E+01 3.70E+01 SE 57 L14662-15 11/19/2008 Cr-51 3.OOE+01 2.60E+02 9.40E+02 SE 57 L14662-15 11/19/2008 Cs-134 4.10E+01 1.80E+01 5.50E+01 SE 57 L14662-15 11/19/2008 Cs-137 -8.OOE+00 1.60E+01 6.1OE+01 SE 57 L14662-15 11/19/2008 Fe-59 -8.80E+01 5.60E+01 2.30E+02 SE 57 L14662:'15 11/19/2008 1-131 4.OOE+01 1.50E+02 5.40E+02 SE 57 L14662-15 11/19/2008 K-40 1.37E+04 7.60E+02 7.70E+02 SE 57 L14662-15 11/19/2008 La-140 1.50E+02 1.00E+02 3.50E+02 SE 57 L14662-15 11/19/2008 Mn-54 -1.80E+01 1.50E+01 6.40E+01 SE 57 L14662-15 11/19/2008 Nb-95 -7.20E+01 3.OOE+01 1.30E+02 SE 57 L14662-15 11/19/2008 Ru-103 -1.00E+01 2.30E+01 9.OOE+01 SE 57 L14662-15 11/19/2008 Ru-106 -2.OOE+01 1.30E+02 5.1OE+02 SE 57 L14662-15 11/19/2008 Sb-124 5.20E+01 2.60E+01 3.50E+01 SE 57 L14662-15 11/19/2008 Sb-125 5.10E+01 4.50E+01 1.50E+02 SE 57 L14662-15 11/19/2008 Se-75 -5.OOE+00 2.50E+01 8.90E+01 SE 57 L14662-15 11/19/2008 Zn-65 1.00E+02 1.00E+02 3.40E+02 SE 57 L14662-15 11/19/2008 Zr-95 -2.OOE+01 3.OOE+01 1.40E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 161

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 S SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TF TF L14169-01 L14169-01 7/22/2008 7/22/2008 AcTh-228 Ag-108m 9.50E+01

6. 1OE+00 5.60E+01 9.80E+00 1.80E+02 3.60E+01 I

TF L14169-01 7/22/2008 Ag-1 10m 4.00E+00 1.60E+01 6.40E+01 TF TF L14169-01 L14169-01 7/22/2008 7/22/2008 Ba-140 Be-7 1.80E+01 2.OOE+01 1.80E+01 1.00E+02 6.70E+01 3.80E+02 I

TF L14169-01 7/22/2008 Ce- 141 -1.101E+01 1.60E+01 6.OOE+01 TF TF TF L14169-01 L14169-01 L14169-01 7/22/2008 7/22/2008 7/22/2008 Ce- 144 Co-5 7 Co-58 2.80E+01 2.70E+00

-9.20E+00 4.40E+01 5.20E+00 9.40E+00 1.60E+02 1.90E+01 4.60E+01 I

TF L14169-01 7/22/2008 Co-60 1.80E+01 1.80E+01 6.50E+01 TF TF L14169-01 L14169-01 7/22/2008 7/22/2008 Cr-51 Cs-134

-4.30E+01 2.40E+00 7.70E+0 1 9.70E+00 3.20E+02 4.90E+01 I

TF L14169-01 7/22/2008 Cs-137 6.30E+00 9.90E+00 3.80E+01 TF TF TF L14169-01 L14169-01 L14169-01 7/22/2008 7/22/2008 7/22/2008 Fe-59 1-131 K-40

-5.80E+01 8.OOE+00 1.98E+03 2.80E+01 1.70E+01 3.70E+02 1.40E+02 6.20E+01 7.70E+02

I TF L14169-01 7/22/2008 La-140 1.80E+01 1.80E+01 6.70E+01 TF TF LI14169-01 L14169-01 7/22/2008 7/22/2008 Mn-54 Nb-95

-I.10E+01

-3.30E+01 1.40E+01 1.60E+01 1.1OE+01 5.90E+01 7.20E+01 I

TF L14169-01 7/22/2008 Ru-103 0.OOE+00 4.40E+01 TF TF TF L14169-01 L14169-01 L14169-01 7/22/2008 7/22/2008 7/22/2008 Ru-106 Sb-124 Sb-125 0.OOE+00 1.40E+01

-1.90E+01 9.1OE+01 2.40E+0 1 3.1 OE+0 I 3.70E+02 1.00E+02 1.30E+02 I

TF L14169-01 7/22/2008 Se-75 5.OOE+00 1.20E+01 4.40E+01 TF TF L14169-01 L14169-01 7/22/2008 7/22/2008 Zn-65 Zr-95

-1.70E+01

-5.OOE+01 1.40E+01 2.40E+01 2.20E+01 5.30E+01

1. 1OE+02 1.1OE+02

2. 1OE+02 I

TF L14319-01 8/26/2008 AcTh-228 TF TF TF L14319-01 L14319-01 L14319-01 8/26/2008 8/26/2008 8/26/2008 Ag-108m Ag-1 10m Ba-140

-7.60E+00 7.OOE+00

-1 .20E+01 8.30E+00 1.00E+01 2.80E+01 3.80E+0I 4.20E+01 1.30E+02 I

TF L14319-01 8/26/2008 Be-7 5.30E+01 9.20E+01 3.50E+02 TF TF L14319-01 L14319-01 8/26/2008 8/26/2008 Ce-141 Ce-144

-4.OOE+00 3.OOE+01 0.OOE+00 1.40E+01 4.50E+01 5.80E+00 5.50E+01 1.60E+02 I TF L14319-01 8/26/2008 Co-57 2.20E+01 TF TF TF L14319-01 L14319-01 L14319-01 8/26/2008 8/26/2008 8/26/2008 Co-58 Co-60 Cr-51

-1.00E+01 1.1 OE+0 I

-7.OOE+00 1.80E+01 1.60E+01 8.50E+01 7.60E+01 6.10E+01 3.40E+02 I

TF L14319-01 8/26/2008 Cs-134 -6.70E+00 9.60E+00 5.50E+01 TF TF TF L14319-01 L14319-01 L14319-01 8/26/2008 8/26/2008 8/26/2008 Cs-137 Fe-59 1-131 0.OOE+00

-2.10E+01 7.00E+00 1.20E+01 2.60E+01 1.90E+01 5.10E+01 1.30E+02 7.30E+01 I

I TF L14319-01 8/26/2008 K-40 1.73E+03 3.80E+02 8.00E+02 TF L14319-01 8/26/2008 La- 140 -1.20E+01 2.80E+01 1.30E+02 TF L14319-01 8/26/2008 Mn-54 7.OOE+00 1.101E+01 4.20E+01 TF L14319-01 8/26/2008 Nb-95 1.90E+01 1.70E+01 5.90E+01 TF TF L14319-01 L14319-01 8/26/2008 8/26/2008 Ru-103 Ru-106

-2.OOE+01

-3.20E+0 I 1.20E+01 9.70E+01 5.60E+01 4.20E+02 I

TF L14319-01 8/26/2008 Sb-124 -3.50E+01 3.50E+01 1.90E+02 TF TF TF L14319-01 L14319-01 L14319-01 8/26/2008 8/26/2008 8/26/2008 Sb-125 Se-75 Zn-65

-2.30E+01 0.00E+00 1.10E+01 4.OOE+01 1.30E+01 3.20E+01 1.60E+02

5. 1OE+01 1.30E+02 I

TF L14319-01 8/26/2008 Zr-95 5.00E+00 1.80E+01 7.50E+01 TF L14169-02 7/22/2008 AcTh-228 1.80E+01 5.70E+01 2.20E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 162 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TF L14169-02 7/22/2008 Ag-108m -7.40E+00 8.90E+00 3.90E+01 TF L14169-02 7/22/2008 Ag-1I Om -3.50E+01 1.80E+01 9.I0E+01 TF L14169-02 7/22/2008 Ba-140 2.30E+01 2.1OE+01 7.60E+01 TF L14169-02 7/22/2008 Be-7 -7.60E+01 8.40E+01 3.80E+02 TF L14169-02 7/22/2008 Ce-141 -1.10E+01 1.80E+01 6.80E+01 TF L14169-02 7/22/2008 Ce-144 -6.90E+0 I 6.OOE+01 2.40E+02 TF L14169-02 7/22/2008 Co-57 -8.50E+00 7.80E+00 3.10E+01 TF L14169-02 7/22/2008 Co-58 6.OOE+00 1.40E+01 5.50E+01 TF L14169-02 7/22/2008 Co-60 2.90E+01 1.90E+01 6.OOE+01 TF L14169-02 7/22/2008 Cr-51 0.OOE+00 8.80E+01 3.50E+02 TF L14169-02 7/22/2008 Cs-134 1.60E+01 1.10E+01 4.50E+01 TF L14169-02 7/22/2008 Cs-137 1.10E+01 1.40E+01 4.90E+0 I TF L14169-02 7/22/2008 Fe-59 - 1.00E+01 3.90E+01 1.60E+02 TF L14169-02 7/22/2008 1-131 1.00E+00 2.OOE+01 7.70E+0 I TF L14169-02 7/22/2008 K-40 1.73E+03 4.20E+02 1.001E+03 TF L14169-02 7/22/2008 La-140 2.30E+01 2.1OE+OI 7.60E+01 TF L14169-02 7/22/2008 Mn-54 1.00E+01 1.30E+01 4.70E+01 TF L14169-02 7/22/2008 Nb-95 -2.I0E+0I 1.30E+01 6.50E+01 TF L14169-02 7/22/2008 Ru- 103 -3.OOE+00 1.60E+01 6.40E+01 TF L14169-02 7/22/2008 Ru-106 3.OOE+01 1.50E+02 5.70E+02 TF L14169-02 7/22/2008 Sb-124 -6.60E+01 3.30E+01 2.OOE+02 TF L14169-02 7/22/2008 Sb-125 3.70E+01 3.60E+01 1.20E+02 TF L14169-02 7/22/2008 Se-75 -9.OOE+00 1.40E+01 5.50E+01 TF L14169-02 7/22/2008 Zn-65 -2.1OE+0I 3.30E+01 1.50E+02 TF L14169-02 7/22/2008 Zr-95 -8.OOE+00 2.90E+0I 1.20E+02 TF L14319-02 8/26/2008 AcTh-228 3.70E+01 4.70E+01 1.70E+02 TF L14319-02 8/26/2008 Ag- 108m 1.06E+01 8.90E+00 3.OOE+01 TF L14319-02 8/26/2008 Ag-1 10m 3.60E+01 1.50E+01 4.30E+01 TF L14319-02 8/26/2008 Ba-140 -7.OOE+00 2.20E+01 9.50E+01 TF L14319-02 8/26/2008 Be-7 -9.50E+01 7.50E+01 3.20E+02 TF L14319-02 8/26/2008 Ce-141 -2.OOE+01 1.20E+01 4.80E+0 I TF L14319-02 8/26/2008 Ce-144 -3.OOE+00 4.40E+01 1.60E+02 TF L14319-02 8/26/2008 Co-57 -1.50E+00 5.90E+00 2.20E+0 1 TF L14319-02 8/26/2008 Co-58 -3.50E+00 6.70E+00 3.1OE+OI TF L14319-02 8/26/2008 Co-60 5.OOE+00 1.40E+01 5.40E+01 TF L14319-02 8/26/2008 Cr-51 2.OOE+02 1.00E+02 3.30E+02 TF L14319-02 8/26/2008 Cs-134 -1.36E+01 7.90E+00 4.50E+0 I TF L14319-02 8/26/2008 Cs-137 -1.00E+01 1.30E+01 5.30E+01 TF L14319-02 8/26/2008 Fe-59 -2.50E+01 2.30E+01 1.00E+02 TF L14319-02 8/26/2008 1-131 1.30E+01 2.OOE+01 7.OOE+01 TF L14319-02 8/26/2008 K-40 2.16E+03 3.30E+02 6.60E+02 TF L14319-02 8/26/2008 La-140 -7.OOE+00 2.20E+O I 9.50E+01 TF L14319-02 8/26/2008 Mn-54 4.90E+00 9.50E+00 3.60E+0I TF L14319-02 8/26/2008 Nb-95 -1.33E+01 7.60E+00 3.90E+01 TF L14319-02 8/26/2008 Ru-103 8.OOE+00 1.00E+01 3.60E+01 TF L14319-02 8/26/2008 Ru-106 -2.60E+01 8.40E+01 3.40E+02 TF L14319-02 8/26/2008 Sb-124 2.OOE+01 2.50E+01 9.40E+0I TF L14319-02 8/26/2008 Sb-125 -1.40E+01 2.20E+01 9.00E+0I TF L14319-02 8/26/2008 Se-75 -9.OOE+00 1.00E+01 4.10E+01 TF L14319-02 8/26/2008 Zn-65 6.OOE+00 2.10E+01 8.20E+01 TF L14319-02 8/26/2008 Zr-95 4.OOE+00 1.70E+01 6.40E+01 TF L14169-03 7/22/2008 AcTh-228 7.OOE+00 5.90E+OI 2.20E+02 TF L14169-03 7/22/2008 Ag-108m -8.50E+00 8.50E+00 3.50E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 163

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TF TF L14169-03 L14169-03 7/22/2008 7/22/2008 Ag-110m Ba-140

-4.OOE+00

-3.OOE+01 2.10E+01 2.10E+01 8.1OE+0I 1.1OE+02 I

TF L14169-03 7/22/2008 Be-7 -1.40E+01 8.20E+01 3.20E+02 TF TF L14169-03 L14169-03 7/22/2008 7/22/2008 Ce-141 Ce-144 1.00E+00

-2.30E+01 1.50E+01 5.40E+01 5.50E+01 2.00E+02 2.60E+0I I

TF L14169-03 7/22/2008 Co-57 -4.90E+00 6.90E+00 TF TF TF L14169-03 L14169-03 L14169-03 7/22/2008 7/22/2008 7/22/2008 Co-58 Co-60 Cr-51

-8.OOE+00

-3.OOE+00

-6.OOE+01 1.1OE+0I 1.40E+01 1.1OE+02 4.80E+0 I 5.80E+0I 4.OOE+02 I

TF L14169-03 7/22/2008 Cs-134 1.33E+01 9.70E+00 4.60E+0 I TF TF L14169-03 L14169-03 7/22/2008 7/22/2008 7/22/2008 Cs-137 Fe-59 7.OOE+00

-1.40E+01 1.30E+01 2.90E+0I 1.90E+01 4.80E+0 I 1.20E+02 7.1OE+01 I

TF L14169-03 1-131 3.OOE+00 I

TF LI14169-03 7/22/2008 K-40 2.20E+03 3.50E+02 7. 10E+02 TF L14169-03 7/22/2008 La- 140 -3.OOE+01 2. 10E+01 1.1OE+02 TF L14169-03 7/22/2008 Mn-54 -7.OOE+00 1.1 OE+0 I 4.60E+0 I TF L14169-03 7/22/2008 Nb-95 0.OOE+00 1.40E+01 5.50E+OI TF TF LI14169-03 L14169-03 7/22/2008 7/22/2008 Ru-103 Ru-106 0.00E+00 9.OOE+01 1.1 OE+0 I 8.90E+0 1 2.80E+01 4.30E+01 3.1OE+02 8.30E+01 I

TF L14169-03 7/22/2008 Sb-124 4.50E+01 TF TF TF L14169-03 LI14169-03 L14169-03 7/22/2008 7/22/2008 7/22/2008 Sb-125 Se-75 Zn-65 2.60E+01 1.00E+00

-2.60E+0 1 3.10E+01 1.30E+01 2.90E+0 I 1.10E+02 4.70E+01 1.20E+02 I

TF L14169-03 7/22/2008 Zr-95 1.60E+01 2.30E+01 8.10E+01 TF TF L14319-03 L14319-03 8/26/2008 8/26/2008 8/26/2008 AcTh-228 Ag-108m 4.OOE+00

-2.55E+01 3.OOE+00 4.1OE+0I 8.50E+00 1.30E+01 1.60E+02 4.1OE+0I 5.30E+01 I

TF L14319-03 Ag-110m TF TF TF L14319-03 L14319-03 L14319-03 8/26/2008 8/26/2008 8/26/2008 Ba-140 Be-7 Ce-141

-1.80E+01

-3.80E+01

-9.00E+00 1.30E+01 9.40E+01 1.40E+01 8.40E+01 3.70E+02 5.101E+0 I I

TF L14319-03 8/26/2008 Ce-144 -2.60E+0 I 4.10E+01 1.60E+02 TF TF L14319-03 L14319-03 8/26/2008 8/26/2008 Co-57 Co-58

-3.OOE-01

-6.OOE+00

-5.60E+00 5.20E+00 1.10E+01 8.40E+00 2.00E+01 4.90E+01 4.40E+01 I

TF L14319-03 8/26/2008 Co-60 TF TF TF L14319-03 L14319-03 L14319-03 8/26/2008 8/26/2008 8/26/2008 Cr-51 Cs-134 Cs-137 5.90E+01

-6.60E+00 1.12E+01 9.80E+01

7. 10E+00 9.70E+00 3.50E+02 4.10E+01 3.40E+0 I I

TF L14319-03 8/26/2008 Fe-59 1.50E+01 2.70E+01 1.00E+02 TF L14319-03 8/26/2008 1-131 -2.OOE+00 1.80E+01 7.OOE+01 TF TF L14319-03 L14319-03 8/26/2008 8/26/2008 K-40 La-140 1.60E+03

-1.80E+01 3.40E+02 1.30E+01 7.90E+02 8.40E+01 I

TF TF TF L14319-03 L14319-03 L14319-03 8/26/2008 8/26/2008 8/26/2008 Mn-54 Nb-95 Ru-103 6.OOE+00 1.40E+01 0.OOE+00 1.20E+01 1.20E+01 1.10E+01 4.60E+01 4.30E+01 4.40E+0I I

TF L14319-03 8/26/2008 Ru-106 -2.30E+01 9.1OE+0I 3.70E+02 TF TF L14319-03 L14319-03 8/26/2008 8/26/2008 Sb-124 Sb-125 2.50E+01 1.10E+01 2.10E+01 2.50E+01 2.90E+01 1.10E+01 9.20E+01 1.1 OE+02 3.40E+01 I

TF L14319-03 8/26/2008 Se-75 TF TF L14319-03 L14319-03 8/26/2008 8/26/2008 Zn-65 Zr-95 5.40E+0 I

-7.OOE+00 2.30E+01 2.30E+01 5.70E+01 9.40E+0I I I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 164 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM L13502-01 1/16/2008 AcTh-228 5.40E+00 8.60E+00 3.OOE+01 TM L13502-01 1/16/2008 Ag-108m -1.70E+00 2.20E+00 8.OOE+00 TM L13502-01 1/16/2008 Ag-1 10m -3.80E+00 2.90E+00 1.10E+01 TM L13502-01 1/16/2008 Ba-140 0.OOE+00 3.70E+00 1.40E+01 TM L13502-01 1/16/2008 Be-7 -3.30E+01 2.OOE+01 7.60E+01 TM L13502-01 1/16/2008 Ce-141 -9.OOE-01 3.80E+00 1.30E+01 TM L13502-01 1/16/2008 Ce-144 -I.70E+01 1.20E+01 4.50E+01 TM L13502-01 1/16/2008 Co-57 -2.OOE-01 1.40E+00 5.OOE+00 TM L13502-01 1/16/2008 Co-58 -4.30E+00 2.30E+00 9.20E+00 TM L13502-01 1/16/2008 Co-60 2.80E+00 2.50E+00 8.50E+00 TM L13502-01 1/16/2008 Cr-51 -3.70E+01 2.OOE+01 7.50E+01 TM L13502-01 1/16/2008 Cs-134 1.00E+00 2.20E+00 7.80E+00 TM L13502-01 1/16/2008 Cs-137 1.40E+00 2.40E+00 8.30E+00 TM L13502-01 1/16/2008 Fe-59 -6.OOE+00 5.40E+00 2. IOE+01 TM L13502-01 1/16/2008 1-131 -9.80E-02 1.70E-02 6.10E-01 TM L13502-01 1/16/2008 1-131 2.OOE+00 4.OOE+00 1.40E+01 TM L13502-01 1/16/2008 K-40 1.24E+03 7.70E+01 1.1OE+02 TM LI3502-01 1/16/2008 La- 140 0.OOE+00 3.70E+00 1.40E+01 TM L13502-01 1/16/2008 Mn-54 0.OOE+00 2.30E+00 8.20E+00 TM LI3502-01 1/16/2008 Nb-95 -3.OOE-01 2.30E+00 8.60E+00 TM L13502-01 1/16/2008 Ru-103 -2.50E+00 2.50E+00 9.30E+00 TM LI3502-01 1/16/2008 Ru-106 -1.50E+01 2.1OE+01 7.90E+0I TM L13502-01 1/16/2008 Sb-124 4.30E+00 5.50E+00 2.OOE+01 TM L13502-01 1/16/2008 Sb-125 7.40E+00 5.80E+00 1.90E+01 TM L13502-01 1/16/2008 Se-75 -I.10E+00 2.80E+00 1.00E+01 TM L13502-01 1/16/2008 Zn-65 -7.60E+00 5.50E+00 2.20E+01 TM L13502-01 1/16/2008 Zr-95 -2.70E+00 4.20E+00 1.60E+01 TM L13608-01 2/13/2008 AcTh-228 5.OOE+00 4.1OE+00 1.40E+01 TM L13608-01 2/13/2008 Ag-108m 3.OOE-01 1.00E+00 3.60E+00 TM L13608-01 2/13/2008 Ag-110m -2.20E+00 1.40E+00 5.1 OE+00 TM L13608-01 2/13/2008 Ba-140 -2.50E+00 1.80E+00 6.80E+00 TM L13608-01 2/13/2008 Be-7 -2.OOE+01 1.00E+01 3.70E+01 TM L13608-01 2/13/2008 Ce-141 2.90E+00 1.70E+00 5.60E+00 TM L13608-01 2/13/2008 Ce-144 -1.13E+01 5.70E+00 2.OOE+01 TM L13608-01 2/13/2008 Co-57 3.80E-01 7.1OE-0I 2.40E+00 TM L13608-01 2/13/2008 Co-58 3.OOE-01 1.1OE+00 3.70E+00 TM L13608-01 2/13/2008 Co-60 8.OOE-01 1.00E+00 3.60E+00 TM L13608-01 2/13/2008 Cr-51 -4.50E+00 9.OOE+00 3.1OE+01 TM L13608-01 2/13/2008 Cs-134 -5.60E-01 8.10E-01 3.90E+00 TM L13608-01 2/13/2008 Cs-137 -5.OOE-01 1.00E+00 3.60E+00 TM L13608-01 2/13/2008 Fe-59 1.80E+00 2.50E+00 8.50E+00 TM L13608-01 2/13/2008 1-131 9.OOE-02 1.80E-01 9.10E-01 TM L13608-01 2/13/2008 1-131 -2.1 OE+00 2.OOE+00 7.20E+00 TM L13608-01 2/13/2008 K-40 1.18E+03 3.80E+01 6.20E+01 TM L13608-01 2/13/2008 La-140 -2.50E+00 1.80E+00 6.80E+00 TM L13608-01 2/13/2008 Mn-54 -2.1 OE+00 1.1 OE+00 3.90E+00 TM L13608-01 2/13/2008 Nb-95 -2.50E+00 1.20E+00 4.40E+00 TM L13608-01 2/13/2008 Ru-103 -2.60E+00 1.20E+00 4.40E+00 TM L13608-01 2/13/2008 Ru- 106 7.90E+00 9.90E+00 3.30E+01 TM L13608-01 2/13/2008 Sb-124 -2.90E+00 2.20E+00 8.60E+00 TM L13608-01 2/13/2008 Sb-125 -1.80E+00 2.60E+00 9.OOE+00 TM L13608-01 2/13/2008 Se-75 -8.OOE-01. 1.30E+00 4.50E+00 TM L13608-01 2/13/2008 Zn-65 2.70E+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 165

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I TM TM L13608-01 L13691-01 2/13/2008 Zr-95 3/11/2008 AcTh-228 1.30E+00 3.90E+00 1.90E+00 7.00E+00 6.50E+00 2.50E+01 I

TM L13691-01 3/11/2008 Ag- 108m 6.OOE-01 1.70E+00 5.80E+00 TM TM L13691-01 L13691-01 3/11/2008 Ag- I lOin 3/11/2008 Ba-140 3/11/2008 Be-7

-4.1 OE+00 1.20E+00 1.50E+01 2.50E+00 3.20E+00 1.40E+01 9.80E+00 1.20E+01 4.80E+0 1 U

TM L13691-01 TM TM TM L13691-01 L13691-01 L13691-01 3/11/2008 Ce-I141 3/11/2008 Ce-144 3/11/2008 Co-57

- 1.0013+00

-1.60E+01

-5.OOE-01 3.00E+00 1.00E+01 1.30E+00 1.00E+01 3.70E+01 4.60E+00 I

TM L13691-01 3/11/2008 Co-58 -1.50E+00 1.70E+00 6.5013+00 TM TM TM L13691-01 L13691-01 L13691-01 3/11/2008 Co-60 3/11/2008 Cr-51 3/11/2008 Cs-134 1.30E+00 0.OOE+00

-I.20E+00 2.10E+00 1.80E+01 1.40E+00 7.5013+00 6.30E+01 7.20E+00 I

TM TM TM L13691-01 L13691-01 L13691-01 3/11/2008 Cs-137 3/11/2008 Fe-59 3/11/2008 1-131 3.30E+00 6.30E+00 3.80E-01 1.7013+00 4.40E+00 2.50E-01 5.60E+00 1.50E+01 7.20E-01 I

TM L13691-01 3/11/2008 1-131 -1.90E+00 3.90E+00 1.40E+01 TM TM TM L13691-01 L13691-01 L13691-01 3/11/2008 K-40 3/11/2008 La- 140 3/11/2008 Mn-54 1.42E+03 1.20E+00

-1.40E+00 7.10E+01 3.20E+00 1.60E+00 1.101E+02 1.20E+01 6.10E+00 I

TM TM TM L13691-01 L13691-01 L13691-01 3/11/2008 Nb-95 3/11/2008 Ru- 103 3/11/2008 Ru-106 1.00E-01

-3.70E+00

-4.60E+01 2.20E+00 1.90E+00 1.9013+01 8.00E+00 7.50E+00 7.30E+01 I

TM L13691-01 3/11/2008 Sb-124 -1.04E+01 4.00E+00 1.8013+01 TM TM TM L13691-01 L13691-01 L13691-01 3/11/2008 Sb-125 3/11/2008 Se-75 3/11/2008 Zn-65

-1.40E+00 1.50E+00 3.20E+00 4.50E+00 2.00E+00 4.50E+00 1.6013+01 6.70E+00 1.60E+01 I

TM TM TM L13691-01 L13804-01 L13804-01 3/11/2008 Zr-95 4/9/2008 AcTh-228 4/9/2008 Ag-108m 1.00E-01 1.30E+00

-4.0013-01 3.30E+00 9.101E+00 1.60E+00 1.20E+01 3.3013+01 5.70E+00 I

TM L13804-01 4/9/2008 Ag-I 1Om -2.30E+00 2.30E+00 9. 101E+00 TM TM TM L13804-01 L13804-01 L13804-01 4/9/2008 Ba-140 4/9/2008 Be-7 4/9/2008 Ce- 141 2.1013+00 1.30E+01

-5.00E-01 3.90E+00 1.50E+01 3.00E+00 1.40E+01 5.10E+01 1.00E+01 I

TM TM TM L13804-01 L13804-01 L13804-01 4/9/2008 Ce- 144 4/9/2008 Co-57 4/9/2008 Co-58 4.OOE+00

-1.40E+00

-6.OOE-01 1.00E+01 1.40E+00 2.00E+00 3.50E+01 4.90E+00 7.50E+00 I

TM L13804-01 4/9/2008 Co-60 - 1.9013+00 2.30E+00 9.00E+00 TM TM TM L13804-01 L13804-01 L13804-01 4/9/2008 Cr-51 4/9/2008 Cs-134 4/9/2008 Cs-137 1.10E+01

-2.80E+00 2.00E+00 1.8013+01 1.50E+00 2.0013+00

6. 1013+01

8. 101E+00 6.8013+00 I

TM TM TM L13804-01 L13804-01 L13804-01 4/9/2008 Fe-59 4/9/2008 1-131 4/9/2008 1-131

-9.0013-01 6.00E-02 4,90E+00 4.30E+00 1.70E-01 3.30E+00 1.60E+01 8.30E-01 1.101E+01 I

TM L13804-01 4/9/2008 K-40 1.29E+03 7.60E+01 1.1013+02

TM TM TM L13804-01 L13804-01 L13804-01 4/9/2008 La-140 4/9/2008 Mn-54 4/9/2008 Nb-95

2. 10E+00 1.90E+00 1.60E+00 3.90E+00 1.90E+00 2.50E+00 1.40E+01 6.60E+00 8.70E+00 I

TM L13804-01 4/9/2008 Ru-103 3.6013+00 2.00E+00 6.60E+00 TM L13804-01 4/9/2008 Ru- 106 5.00E+00 1.90E+01 6.7013+01 TM L13804-01 4/9/2008 Sb-124 -3.00E+00 4.2013+00 1.80E+01 TM L13804-01 4/9/2008 Sb-125 5.00E-01 4.70E+00 1.70E+01 TM L1,3804-01 4/9/2008 Se-75 2.00E-01 2.50E+00 8.80E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 166 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM L13804-01 4/9/2008 Zn-65 -7.50E+00 5.60E+00 2.20E+01 TM L13804-01 4/9/2008 Zr-95 2.40E+00 3.20E+00 1.IOE+01 TM L13845-01 4/23/2008 AcTh-228 - 1.40E+01 9.40E+00 3.60E+01 TM L13845-01 4/23/2008 Ag-108m 2.20E+00 1.60E+00 5.1OE+00 TM L13845-01 4/23/2008 Ag-I Om 0.OOE+00 3.20E+00 1.20E+01 TM L13845-01 4/23/2008 Ba-140 -3.80E+00 3.30E+00 1.40E+01 TM L13845-01 4/23/2008 Be-7 -2.OOE+00 1.60E+01 5.80E+01 TM L13845-01 4/23/2008 Ce- 141 -2.80E+00 2.70E+00 9.60E+00 TM L13845-01 4/23/2008 Ce- 144 -9.40E+00 8.90E+00 3.20E+01 TM L13845-01 4/23/2008 Co-57 -1.001E+00 1.30E+00 4.40E+00 TM L13845-01 4/23/2008 Co-58 -2. 1OE+00 1.70E+00 6.70E+00 TM L13845-01 4/23/2008 Co-60 -1.20E+00 2.30E+00 9. iOE+00 TM L13845-01 4/23/2008 Cr-51 -1.00E+01 1.80E+01 6.30E+01 TM L13845-01 4/23/2008 Cs-134 -3. 1OE+00 1.60E+00 7.90E+00 TM L13845-01 4/23/2008 Cs-137 -3.OOE-01 2.20E+00 7.80E+00 TM L13845-01 4/23/2008 Fe-59 7.OOE-01 4.40E+00 1.60E+01 TM L13845-01 4/23/2008 1-131 1.60E-01 2.20E-01 9.OOE-01 TM L13845-01 4/23/2008 1-131 6.OOE-01 3.60E+00 1.20E+01 TM L13845-01 4/23/2008 K-40 1.48E+03 8.20E+01 1.00E+02 TM LI13845-01 4/23/2008 La-140 -3.80E+00 3.30E+00 1.40E+01 TM L13845-01 4/23/2008 Mn-54 2.OOE-01 2.1OE+00 7.40E+00 TM L13845-01 4/23/2008 Nb-95 -2.40E+00 2.00E+00 7.80E+00 TM L13845-01 4/23/2008 Ru-103 3.20E+00 2.OOE+00 6.70E+00 TM L13845-01 4/23/2008 Ru-106 -2.50E+01 1.80E+01 7.OOE+01 TM L13845-01 4/23/2008 Sb-124 -6.50E+00 6.OOE+00 2.40E+01 TM L13845-01 4/23/2008 Sb-125 5.40E+00 4.70E+00 1.60E+01 TM L13845-01 4/23/2008 Se-75 -7.OOE-0I 2.OOE+00 7.20E+00 TM L13845-01 4/23/2008 Zn-65 - 1.08E+01 5.30E+00 2.10E+01 TM L13845-01 4/23/2008 Zr-95 2.60E+00 3.30E+00 1.20E+01 TM L13909-01 5/7/2008 AcTh-228 1.84E+0I 7.1OE+00 2.20E+01 TM L13909-01 5/7/2008 Ag-108m 1.00E+00 1.50E+00 5.20E+00 TM L13909-01 5/7/2008 Ag-110m 1.80E+00 2.70E+00 9.30E+00 TM L13909-01 5/7/2008 Ba-140 -1.40E+00 3.90E+00 1.50E+0I TM L13909-01 5/7/2008 Be-7 - 1.70E+01 1.60E+01 5.80E+01 TM L13909-01 5/7/2008 Ce-I141 -3. 1OE+00 2.60E+00 9.20E+00 TM L13909-01 5/7/2008 Ce-144 -8.1 OE+00 8.80E+00 3.1OE+0I TM L13909-01 5/7/2008 Co-57 3.60E-01 9.90E-01 3.40E+00 TM L13909-01 5/7/2008 Co-58 -2.40E+00 1.90E+00 7.50E+00 TM L13909-01 5/7/2008 Co-60 -3. 1OE+00 2.30E+00 9.30E+00 TM L13909-01 5/7/2008 Cr-51 0.00E+00 1.30E+01 4.80E+01 TM L13909-01 5/7/2008 Cs-134 -3.OOE-01 1.40E+00 6.1OE+00 TM L13909-01 5/7/2008 Cs-137 -4.20E+00 1.80E+00 7.20E+00 TM L13909-01 5/7/2008 Fe-59 6.OOE-01 4.70E+00 1.70E+0I TM L13909-01 5/7/2008 1-131 8.OOE-01 2.90E+00 1.00E+01 TM L13909-01 5/7/2008 1-131 1.90E-01 1.80E-01 6.20E-01 TM L13909-01 5/7/2008 K-40 1.30E+03 7.50E+01 1.1OE+02 TM L13909-01 5/7/2008 La-140 -1.40E+00 3.90E+00 1.50E+01 TM L13909-01 5/7/2008 Mn-54 -8.OOE-0I 2.1OE+00 7.60E+00 TM L13909-01 5/7/2008 Nb-95 -8.OOE-0I 2.20E+00 8.20E+00 TM L13909-01 5/7/2008 Ru-103 1.00E+00 1.90E+00 6.50E+00 TM L13909-01 5/7/2008 Ru-106 4.1OE+0 I 1.60E+01 4.70E+01 TM L13909-01 5/7/2008 Sb-124 -5.00E+00 4.30E+00 1.90E+01 TM L13909-01 5/7/2008 Sb-125 -3.50E+00 4.40E+00 1.60E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 167

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

I TM L13909-01 5/7/2008 Se-75 2.OOE+00 2.OOE+00 6.80E+00 TM TM TM L13909-01 L13909-01 L13956-01 5/7/2008 5/7/2008 5/21/2008 Zn-65 Zr-95 AcTh-228 1.1OE+01

-5.90E+00

-5. 1OE+00 5.20E+00 3.70E+00 8.90E+00 1.60E+0I 1.40E+01 3.30E+01 I

TM L13956-01 6.1OE+00 TM TM L13956-01 L13956-01.

5/21/2008 5/21/2008 5/21/2008 Ag-108m Ag-110m Ba-140

-7.OOE-01

-1.60E+00,

-4.30E+00 1.70E+00 2.70E+00 3.20E+00 1.00E+01 1.40E+01 I

TM L13956-01 5/21/2008 Be-7 -2.OOE+00 1.60E+01 5.90E+01 TM TM TM L13956-01 L13956-01 L13956-01 5/21/2008 5/21/2008 5/21/2008 Ce- 141 Ce-144 Co-57 1.30E+00

-8.OOE+00

-5.OOE-01 3.30E+00 1.1OE+01 1.40E+00 1.IOE+01 3.90E+01 4.80E+00 I

TM TM TM L13956-01 L13956-01 L13956-01 5/21/2008 5/21/2008 5/21/2008 Co-58 Co-60 Cr-51

-2:00E+00

-8.OOE-01 0.00E+00 2.OOE+00 2.50E+00 1.70E+01 7.90E+00 9.50E+00 6.OOE+01 I

TM L13956-01 5/21/2008 Cs-134 1.1OE+00 1.50E+00 7.20E+00 TM TM TM L13956-01 L13956-01 L13956-01 5/21/2008 5/21/2008 5/21/2008 Cs-137 Fe-59 1-131 8.OOE-01 1.50E+00 2.90E-01 1.80E+00 5.OOE+00 2.70E-01 6.30E+00 1.80E+01 9.10E-01 I

TM L13956-01 5/21/2008 1-131 -4.70E+00 3.60E+00 1.40E+01 TM TM L13956-01 L13956-01 5/21/2008 5/21/2008 K-40 La-140 1.52E+03

-4.30E+00 8.30E+01 3.20E+00 1.1OE+02 1.40E+01 I

TM L13956-01 5/21/2008 Mn-54 6.OOE-01 1.90E+00 6.80E+00 TM TM TM L13956-01 L13956-01 L13956-01 5/21/2008 5/21/2008 5/21/2008 Nb-95 Ru-103 Ru-106 3.OOE+00

-2.80E+00 1.90E+01 2.OOE+00

2. 1OE+00 2.OOE+01 6.50E+00 8.10E+00 6.80E+01 I

TM L13956-01 5/21/2008 0.OOE+00 3.90E+00 1.60E+01 TM TM L13956-01 L13956-01 5/21/2008 5/21/2008 Sb-124 Sb-125 Se-75 0.OOE+00 0.OOE+00 4.90E+00 2.40E+00 1.80E+01 8.60E+00 I

TM L13956-01 5/21/2008 Zn-65 3.30E+00 5.50E+00 1.90E+01 TM TM TM L13956-01 L14012-01 L14012-01 5/21/2008 6/5/2008 6/5/2008 Zr-95 AcTh-228 Ag-108m

-2.50E+00 1.90E+01 1.40E+00 3.70E+00 1.00E+01 1.80E+00 1.40E+01 3.40E+01 6.OOE+00 I

TM L14012-01 6/5/2008 Ag-1 10m 8.OOE-01 3.20E+00 1.10E+01 TM TM L14012-01 L14012-01 6/5/2008 6/5/2008 Ba-140 Be-7 7.60E+00 0.OOE+00 4.50E+00 1.70E+01 1.40E+0 I 6.30E+01 I

TM L14012-01 6/5/2008 Ce- 141 -5.70E+00 2.90E+00 1.1OE+01 TM TM TM L14012-01 L14012-01 L14012-01 6/5/2008 6/5/2008 6/5/2008 Ce-144 Co-57 Co-58 1.40E+01 1.40E+00 2.80E+00 1.00E+01 1.50E+00

2. 1OE+00 3.40E+01 4.90E+00 7.20E+00 I

9.20E+00 I

TM L14012-01 6/5/2008 Co-60 1.80E+00 2.60E+00 TM L14012-01 6/5/2008 Cr-51 -2.OOE+00 2.OOE+0 I 6.90E+01 TM L14012-01 6/5/2008 Cs-134 1.20E+00 1.80E+00 8.50E+00 TM L14012-01 6/5/2008 Cs-137 1.30E+00 2.40E+00 8.30E+00 TM L14012-01 6/5/2008 Fe-59 -1.50E+00 5.30E+00 2.OOE+01 TM L14012-01 6/5/2008 1-131 -1.86E-01 2.90E-02 9.40E-01 TM L14012-01 6/5/2008 1-131 3.OOE+00 4.90E+00 1.70E+01 TM TM L14012-01 L14012-01 6/5/2008 6/5/2008 K-40 La-140 1.39E+03 7.60E+00 8.50E+01 4.50E+00 1.30E+02 1.40E+01 I

TM TM TM L14012-01 L14012-01 L14012-01 6/5/2008 6/5/2008 6/5/2008 Mn-54 Nb-95 Ru-103 1.1OE+00 2.20E+00

-3.60E+00 2.1OE+00 2.70E+00 2.OOE+00 7.30E+00 9.40E+00 7.90E+00 I

TM L14012-01 6/5/2008 Ru-106 6.OOE+00 2.20E+01 7.60E+01 TM L14012-01 6/5/2008 Sb-124 4.80E+00 5.1OE+00 1.80E+01 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 168 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM LI4012-01 6/5/2008 Sb-125 1.60E+00 5.20E+00 1.80E+01 TM L14012-01 6/5/2008 Se-75 2.70E+00 1.90E+00 6.20E+00 TM L14012-01 6/5/2008 Zn-65 -5.1 OE+00 5.60E+00 2.1OE+01 TM L14012-01 6/5/2008 Zr-95 1.60E+00 3.90E+00 1.40E+01 TM L14053-01 6/18/2008 AcTh-228 -5.OOE-01 6.30E+00 2.20E+0 I TM L14053-01 6/18/2008 Ag-108m 5.OOE-01 1.1 OE+00 3.80E+00 TM L14053-01 6/18/2008 Ag-110m 1.70E+00 1.90E+00 6.30E+00 TM L14053-01 6/18/2008 Ba-140 3.50E+00 3.40E+00 1.10E+01 TM L14053-01 6/18/2008 Be-7 -6.OOE+00 1.IOE+01 4.OOE+01 TM L14053-01 6/18/2008 Ce-141 1.00E+00 2.OOE+00 6.70E+00 TM L14053-01 6/18/2008 Ce-144 2.60E+00 6.60E+00 2.20E+01 TM L14053-01 6/18/2008 Co-57 6.OOE-01 8.30E-01 2.80E+00 TM L14053-01 6/18/2008 Co-58 -6.OOE-01 1.60E+00 5.50E+00 TM L14053-01 6/18/2008 Co-60 1.00E-01 1.70E+00 6.20E+00 TM L14053-01 6/18/2008 Cr-51 1.20E+01 1.1 OE+0 I 3.80E+01 TM L14053-01 6/18/2008 Cs-134 -6.OOE-02 9.50E-01 4.1OE+00 TM L14053-01 6/18/2008 Cs-137 1.50E+00 1.30E+00 4.20E+00 TM L14053-01 6/18/2008 Fe-59 -2.1 OE+00 3.70E+00 1.30E+01 TM L14053-01 6/18/2008 1-131 6.OOE-02 1.80E-01 9.60E-01 TM L14053-01 6/18/2008 1-131 1.30E+00 3.90E+00 1.30E+01 TM L14053-01 6/18/2008 K-40 1.38E+03 5.30E+01 9.OOE+01 TM L14053-01 6/18/2008 La-140 3.50E+00 3.40E+00 1.IOE+01 TM L14053-01 6/18/2008 Mn-54 2.20E+00 1.40E+00 4.60E+00 TM L14053-01 6/18/2008 Nb-95 6.OOE-01 1.70E+00 5.90E+00 TM L14053-01 6/18/2008 Ru-103 -2.70E+00 1.50E+00 5.30E+00 TM L14053-01 6/18/2008 Ru-106 1.60E+01 1.50E+01 4.90E+01 TM L14053-01 6/18/2008 Sb-124 -3.70E+00 3.50E+00 1.40E+01 TM L14053-01 6/18/2008 Sb-125 3.30E+00 3.20E+00 1.10E+01 TM L14053-01 6/18/2008 Se-75 9.OOE-01 1.40E+00 4.80E+00 TM L14053-01 6/18/2008 Zn-65 -3.OOE+00 4.60E+00 1.60E+01 TM L14053-01 6/18/2008 Zr-95 -5.O0E-01 2.70E+00 9.60E+00 TM L14109-01 7/2/2008 AcTh-228 1.47E+01 5.40E+00 1.70E+01 TM L14109-01 7/2/2008 Ag-108m 2.40E+00 1.10E+00 3.50E+00 TM L14109-01 7/2/2008 Ag-110m -4.70E+00 2.1OE+00 7.90E+00 TM L14109-01 7/2/2008 Ba-140 -4.40E+00 3.10E+00 1.20E+01 TM L14109-01 7/2/2008 Be-7 -3.OOE+00 1.1OE+0I 3.70E+01 TM L14109-01 7/2/2008 Ce-141 6.OOE-01 2.OOE+00 6.60E+00 TM L14109-01 7/2/2008 Ce-144 -4.OOE+00 6.50E+00 2.20E+01 TM L14109-01 7/2/2008 Co-57 -5.OOE-01 1.1OE+00 3.80E+00 TM L14109-01 7/2/2008 Co-58 -3.OOE-01 1.40E+00 5.OOE+00 TM L14109-01 7/2/2008 Co-60 -I.80E+00 1.70E+00 6.30E+00 TM L14109-01 7/2/2008 Cr-51 -8.OOE+00 1.20E+0I 4.40E+01 TM L14109-01 7/2/2008 Cs-134 3.OOE-01 1.00E+00 4.80E+00 TM L14109-01 7/2/2008 Cs-137 7.00E-01 1.70E+00 5.70E+00 TM L14109-01 7/2/2008 Fe-59 3.70E+00 3.40E+00 1.101E+01 TM L14109-01 7/2/2008 1-131 -1.53E-01 2.30E-02 7.70E-01 TM L14109-01 7/2/2008 1-131 8.OOE-01 2.60E+00 8.90E+00 TM L14109-01 7/2/2008 K-40 1.49E+03 5.90E+01 9.70E+01 TM L14109-01 7/2/2008 La- 140 -4.40E+00 3.1OE+00 1.20E+01 TM L14109-01 7/2/2008 Mn-54 -1.1OE+00 1.30E+00 4.80E+00 TM L14109-01 7/2/2008 Nb-95 1.00E-01 1.50E+00 5.40E+00 TM L14109-01 7/2/2008 Ru-103 -4.OOE-01 1.40E+00 5.00E+00 TM L14109-01 7/2/2008 Ru-106 1.20E+01 1.30E+01 4.40E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 169

Monitoring Program -2008 Seabrook Nuclear Power Station Radiological Environmental SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

I TM L14109-01 7/2/2008 Sb-124 3.50E+00 3.20E+00 1.10E+01 TM TM TM L14109-01 L14109-01 L14109-01 7/2/2008 7/2/2008 7/2/2008 Sb-125 Se-75 Zn-65

-9.OOE-01 9.OOE-01

-3.10E+00 3.40E+00 1.40E+00 4.60E+00 1.20E+01 4.60E+00 1.70E+01 i

TM L14109-01 7/2/2008 -1.90E+00 2.30E+00 8.50E+00 I

Zr-95 TM L14162-01 7/16/2008 AcTh-228 1.07E+01 8.30E+00 2.80E+01 TM L14162-01 7/16/2008 Ag-108m 2.OOE+00 1.50E+00 5.101E+00 TM L14162-01 7/16/2008 Ag-110m 2.20E+00 3.OOE+00 1.00E+01 TM TM TM L14162-01 L14162-01 L14162-01 7/16/2008 7/16/2008 7/16/2008 Ba-140 Be-7 Ce-141 7.OOE-01

-5.OOE+00 1.00E+00 3.70E+00 1.50E+01 2.70E+00 1.40E+01 5.50E+01 9.20E+00 I

L14162-01 7/16/2008 8.40E+00 2.90E+01 I

TM Ce-144 4.OOE-01 TM L14162-01 7/16/2008 Co-57 -6.OOE-01 1.00E+00 3.70E+00 TM L14162-01 7/16/2008 Co-58 1.20E+00 2.40E+00 8.40E+00 TM L14162-01 7/16/2008 Co-60 -5.OOE-01 2.30E+00 8.80E+00 TM TM TM L14162-01 L14162-01 L14162-01 7/16/2008 7/16/2008 7/16/2008 Cr-51 Cs-134 Cs-137 6.OOE+00

-2.70E+00 0.OOE+00 1.50E+01

2. 1OE+00 1.80E+00 5.20E+01 8.40E+00 6.60E+00 I

TM L14162-01 7/16/2008 Fe-59 0.OOE+00 4.70E+00 1.70E+01 TM TM L14162-01 L14162-01 7/16/2008 7/16/2008 1-131 1-131 1.OOE-02

-1.90E+00 1.70E-01 3.30E+00 9.90E-01 1.20E+01 I

TM L14162-01 7/16/2008 K-40 1.40E+03 7.70E+0 I 1.101E+02 TM TM TM L14162-01 L14162-01 L14162-01 7/16/2008 7/16/2008 7/16/2008 La- 140 Mn-54 Nb-95 7.OOE-01 2.OOE-01 6.OOE-01 3.70E+00 2.10E+00 2.40E+00 1.40E+01 7.30E+00 8.50E+00 I

TM L14162-01 7/16/2008 Ru-103 -4.80E+00 2. 1OE+00 8.20E+00 TM TM L14162-01 L14162-01 7/16/2008 7/16/2008 Ru-106 Sb-124 1.60E+01

-3.OOE+00 1.60E+01 4.50E+00 5.50E+01 1.90E+01 I

TM L14162-01 7/16/2008 Sb-125 -3.50E+00 4.70E+00 1.70E+01 TM TM TM L14162-01 L14162-01 L14162-01 7/16/2008 7/16/2008 7/16/2008 Se-75 Zn-65 Zr-95 2.50E+00 3.60E+00

-1.30E+00 2.OOE+00 5.OOE+00 3.20E+00 6.70E+00 1.70E+01 1.20E+01 I

TM L14269-01 8/13/2008 AcTh-228 6.60E+00 7.50E+00 2.60E+01 TM TM L14269-01 L14269-01 8/13/2008 8/13/2008 Ag-108m Ag-110m 1.40E+00 2.60E+00 1.30E+00 1.80E+00 4.50E+00 6.OOE+00 I

TM L14269-01 8/13/2008 Ba-140 1.60E+00 3.101E+00 1.IOE+01 TM TM TM L14269-01 L14269-01 L14269-01 8/13/2008 8/13/2008 8/13/2008 Be-7 Ce-141 Ce-144

-3.50E+01 2.80E+00 1.25E+01 1.30E+01 1.80E+00 6.40E+00 4.90E+01 5.90E+00 2.101E+01 I

TM L14269-01 8/13/2008 Co-57 1.30E-01 7.90E-01 2.70E+00 TM TM L14269-01 L14269-01 8/13/2008 8/13/2008 Co-58 Co-60

-1.50E+00

-1.20E+00 1.50E+00 1.70E+00 5.80E+00 6.60E+00 I

TM L14269-01 8/13/2008 Cr-51 1.00E+00 1.20E+01 4.20E+01 TM TM TM L14269-01 L14269-01 L14269-01 8/13/2008 8/13/2008 8/13/2008 Cs-134 Cs-137 Fe-59 1.00E+00

-8.OOE-01

-5.OOE-01 1.20E+00 1.60E+00 3.90E+00 5.50E+00 5.70E+00 1.40E+01 I

2.50E+00 9.00E+00 U

TM L14269-01 8/13/2008 1-131 -9.OOE-0I TM L14269-01 8/13/2008 1-131 9.OOE-02 2.00E-01 9.10E-01 TM L14269-01 8/13/2008 K-40 1.44E+03 6.80E+01 9.80E+01 TM L14269-01 8/13/2008 La-140 1.60E+00 3.101E+00 1.IOE+01 TM TM TM L14269-01 L14269-01 L14269-01 8/13/2008 8/13/2008 8/13/2008 Mn-54 Nb-95 Ru-103 5.OOE-01

-9.OOE-01 1.60E+00 1.70E+00 1.90E+00 1.70E+00 6.00E+00 6.80E+00 5.70E+00 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 170 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM L14269-01 8/13/2008 Ru-106 6.OOE+00 1.40E+01 4.70E+01 TM L14269-01 8/13/2008 Sb-124 3.70E+00 4.80E+00 1.70E+01 TM L14269-01 8/13/2008 Sb-125 1.00E+00 3.90E+00 1.40E+01 TM L14269-01 8/13/2008 Se-75 - 1.00E-01 1.60E+00 5.50E+00 TM L14269-01 8/13/2008 Zn-55 -3.20E+00 3.80E+00 1.40E+01 TM L14269-01 8/13/2008 Zr-95 2.30E+00 3.1OE+00 1.1OE+01 TM L14320-01 8/27/2008 AcTh-228 -2.50E+00 9.70E+00 3.70E+01 TM L14320-01 8/27/2008 Ag- 108m 1.1OE+00 1.90E+00 6.70E+00 TM L14320-01 8/27/2008 Ag-1 10m 1.80E+00 3.30E+00 1.20E+01 TM L14320-01 8/27/2008 Ba-140 3.20E+00 3.60E+00 1.30E+01 TM L14320-01 8/27/2008 Be-7 -3.70E+01 1.90E+01 7.80E+01 TM L14320-01 8/27/2008 Ce-141 8.OOE-01 3.40E+00 1.20E+01 TM L14320-01 8/27/2008 Ce-144 8.OOE+00 1.40E+01 4.70E+01 TM L14320-01 8/27/2008 Co-57 -4.30E+00 1.70E+00 6.60E+00 TM L14320-01 8/27/2008 Co-58 2.60E+00 2.70E+00 9.40E+00 TM L14320-01 8/27/2008 Co-60 -2.30E+00 2.70E+00 1.10E+01 TM L14320-01 8/27/2008 Cr-51 -2.50E+01 2.20E+01 8.50E+01 TM L14320-01 8/27/2008 Cs-134 -4.80E+00 1.90E+00 1.1 OE+0 I TM L14320-01 8/27/2008 Cs-137 1.00E-01 2.60E+00 9.60E+00 TM L14320-01 8/27/2008 Fe-59 -4.OOE+00 5.80E+00 2.30E+01 TM L14320-01 8/27/2008 1-131 2.OOE-02 1.10E-01 6.30E-01 TM L14320-01 8/27/2008 1-131 -3.20E+00 4.OOE+00 1.50E+01 TM L14320-01 8/27/2008 K-40 1.50E+03 9.90E+01 1.30E+02 TM L14320-01 8/27/2008 La-140 3.20E+00 3.60E+00 1.30E+01 TM L14320-01 8/27/2008 Mn-54 -8.OOE-01 2.70E+00 1.00E+01 TM L14320-01 8/27/2008 Nb-95 -3.70E+00 3.1OE+00 1.20E+01 TM L14320-01 8/27/2008 Ru-103 -8.OOE-01 2.50E+00 9.20E+00 TM L14320-01 8/27/2008 Ru-106 3.OOE+00 2.30E+01 8.50E+01 TM L14320-01 8/27/2008 Sb-124 1.08E+01 5.1OE+00 1.40E+01 TM L14320-01 8/27/2008 Sb-125 7.50E+00 6.1OE+00 2.OOE+01 TM L14320-01 8/27/2008 Se-75 3.90E+00 3.20E+00 1.1 OE+01 TM L14320-01 8/27/2008 Zn-65 -1.15E+01 5.90E+00 2.50E+01 TM L14320-01 8/27/2008 Zr-95 1.50E+00 4.90E+00 1.80E+01 TM L14365-01 9/11/2008 AcTh-228 -7.OOE-01 9.OOE+00 3.20E+01 TM L14365-01 9/11/2008 Ag-108m I.00E+00 1.40E+00 4.80E+00 TM L14365-01 9/11/2008 Ag-1 10m -6.00E-0I 2.50E+00 9.1OE+00 TM L14365-01 9/11/2008 Ba-140 -4.70E+00 3.40E+00 1.40E+01 TM L14365-01 9/11/2008 Be-7 1.40E+01 1.30E+01 4.30E+01 TM L14365-01 9/11/2008 Ce-141 -2.OOE+00 2.70E+00 9.40E+-00 TM L14365-01 9/11/2008 Ce-144 2.50E+00 8.90E+00 3.OOE+01 TM L14365-01 9/11/2008 Co-57 2.60E+00 1.1OE+00 3.50E+00 TM L14365-01 9/11/2008 Co-58 -5.OOE-01 1.90E+00 6.80E+00 TM L14365-01 9/11/2008 Co-60 5.60E+00 2.30E+00 6.90E+00 TM L14365-01 9/11/2008 Cr-51 -8.OOE+00 1.50E+01 5.20E+01 TM L14365-01 9/11/2008 Cs-134 -3.OOE-01 1.20E+00 5.90E+00 TM L14365-01 9/11/2008 Cs-137 -6.OOE-01 2.OOE+00 7.20E+00 TM L14365-01 9/11/2008 Fe-59 -1.60E+00 4.80E+00 1.70E+01 TM L14365-01 9/11/2008 1-131 -9.50E-02 1.60E-02 6.OOE-01 TM L14365-01 9/11/2008 1-131 -7.OOE-01 3.1OE+00 1.1 OE+01 TM L14365-01 9/11/2008 K-40 1.39E+03 7.20E+01 1.00E+02 TM L14365-01 9/11/2008 La-140 -4.70E+00 3.40E+00 1.40E+01 TM L14365-01 9/11/2008 Mn-54 2.40E+00 1.60E+00 5.20E+00 TM L14365-01 9/11/2008 Nb-95 2.OOE+00 2.20E+00 7.50E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 171

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I TM TM L14365-01 L14365-01 9/11/2008 9/11/2008 Ru-103 Ru-106

-3.OOE-01 9.OOE+00 1.60E+00 1.70E+01 5.80E+00 6.00E+01 I

TM L14365-01 9/11/2008 Sb-124 1.70E+00 4.20E+00 1.50E+01 TM TM L14365-01 L14365-01 9/11/2008 9/11/2008 Sb-125 Se-75

-3. 10E+00 2.80E+00 4.40E+00 1.80E+00 1.60E+01 5.90E+00 2.90E+01 I

TM L14365-01 9/11/2008 Zn-65 8.OOE+00 8.80E+00 TM TM TM L14365-01 L14424-01 L14424-01 9/11/2008 9/24/2008 9/24/2008 Zr-95 AcTh-228 Ag-108m 1.101E+00

-1.0IE+01

-1.10E+00 3.30E+00 8.80E+00 1.40E+00 1.20E+01 3.20E+01 5.20E+00 I

TM L14424-01 9/24/2008 Ag-110m -3.60E+00 2.80E+00 1.IOE+01 TM TM L14424-01 L14424-01 9/24/2008 9/24/2008 Ba-140 Be-7

-2.40E+00

-2.20E+01 3.70E+00 1.50E+01 2.70E+00 1.40E+01 5.50E+01 9.1OE+00 I

TM L14424-01 9/24/2008 Ce- 141 3.OOE-01 TM TM TM L14424-01 L14424-01 L14424-01 9/24/2008 9/24/2008 9/24/2008 Ce- 144 Co-57 Co-58

-9.60E+00 4.OOE-01

-9.00E-01 8.80E+00 1.1OE+00 1.80E+00 3.10E+01 3.70E+00 6.60E+00 I

TM L14424-01 9/24/2008 Co-60 0.00E+00 2.30E+00 8.30E+00 TM TM L14424-01 L14424-01 L14424-01 9/24/2008 9/24/2008 9/24/2008 Cr-51 Cs-134

-2.OOE+01 1.OOE-01

-9.OOE-01 1.60E+01 1.50E+00 2.OOE+00 5.80E+01 6.20E+00 7.20E+00 I

TM Cs-137 TM TM TM L14424-01 L14424-01 L14424-01 9/24/2008 9/24/2008 9/24/2008 Fe-59 1-131 1-131 6.80E+00 1.60E-01 6.20E+00 4.40E+00 2.20E-01 3.40E+00 1.40E+01 9.30E-01 1.IOE+01 I

TM L14424-01 9/24/2008 K-40 1.32E+03 6.90E+01 9.60E+01 -*

TM TM L14424-01 L14424-01 9/24/2008 9/24/2008 9/24/2008 La-140 Mn-54

-2.40E+00 3.OOE-01 7.OOE-01 3.70E+00 1.60E+00 2.00E+00 1.40E+01 5.80E+00

7. 1OE+00 I

TM L14424-01 Nb-95 TM TM TM L14424-01 L14424-01 L14424-01 9/24/2008 9/24/2008 9/24/2008 Ru-103 Ru- 106 Sb-124

-3.50E+00

-3.OOE+00 4.30E+00 1.60E+00 1.70E+01 3.70E+00 6.30E+00 6.1OE+01 1.30E+01 I

TM L14424-01 9/24/2008 Sb-125 -7.60E+00 4.40E+00 1.60E+01 TM TM L14424-01 L14424-01 9/24/2008 9/24/2008 9/24/2008 Se-75 Zn-65 1.60E+00

-4.20E+00 1.90E+00 1.70E+00 4.90E+00 3.40E+00 5.90E+00 1.80E+01 1.20E+01 I

TM L14424-01 Zr-95 TM TM TM L14550-01 L14550-01 L14550-01 10/22/2008 10/22/2008 10/22/2008 AcTh-228 Ag-108m Ag-1 10m 6.OOE+00

-2.OOE+00

-8.00E-01 9.70E+00 1.90E+00 3.1OE+00 3.40E+01 6.90E+00 1.10E+01 I

TM L14550-01 10/22/2008 Ba-140 -2.90E+00 3.40E+00 1.40E+01 TM TM L14550-01 L14550-01 10/22/2008 10/22/2008 Be-7 Ce-141

-3.30E+01

-3.80E+00 3.OOE+00 1.70E+01 2.90E+00 1.00E+01 6.60E+01 1.00E+01 3.50E+01 I

TM L14550-01 10/22/2008 Ce-144 TM TM TM L14550-01 L14550-01 L14550-01 10/22/2008 10/22/2008 10/22/2008 Co-57 Co-58 Co-60

-2.OOE+00

-1.50E+00 4.OOE-01 1.40E+00 2.20E+00 2.70E+00 4.90E+00 8.40E+00 9.70E+00 I

TM L14550-01 10/22/2008 Cr-51 6.OOE+00 1.60E+01 5.60E+01 TM L14550-01 10/22/2008 Cs-134 1.30E+00 1.60E+00 6.80E+00 TM L14550-01 10/22/2008 Cs-137 4.40E+00 2.1OE+00 6.50E+00 TM L14550-01 10/22/2008 Fe-59 5.60E+00 5.20E+00 1.80E+01 TM L14550-01 10/22/2008 1-131 6.00E-02 1.70E-01 9.20E-01 TM TM TM L14550-01 L14550-01 L14550-01 10/22/2008 10/22/2008 10/22/2008 1-131 K-40 La-140

-2.90E+00 1.38E+03

-2.90E+00 3.10E+00 8.50E+01 3.40E+00 1.20E+01 1.40E+02 1.40E+01 I

TM L14550-01 10/22/2008 Mn-54 1.40E+00 2.40E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 8.50E+00 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 172 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM L14550-01 10/22/2008 Nb-95 -7.90E+00 2.80E+00 1.10E+01 TM L14550-01 10/22/2008 Ru-103 -2.OOE-01 2.20E+00 7.70E+00 TM L14550-01 10/22/2008 Ru-106 -4.OOE+00 1.80E+01 6.50E+01 TM L14550-01 10/22/2008 Sb-124 -9. 1OE+00 5.60E+00 2.40E+01 TM L14550-01 10/22/2008 Sb-125 -9.20E+00 5.40E+00 2.10E+01 TM L14550-01 10/22/2008 Se-75 -5.00E-01 2.20E+00 7.80E+00 TM L14550-01 10/22/2008 Zn-65 4.90E+00 5.70E+00 2.00E+01 TM L14550-01 10/22/2008 Zr-95 3.OOE-01 4.OOE+00 1.40E+01 TM L14638-01 11/19/2008 AcTh-228 4.90E+00 7.60E+00 2.60E+01 TM L14638-01 11/19/2008 Ag- 108m -2.OOE+00 1.20E+00 4.60E+00 TM L14638-01 11/19/2008 Ag-1 10m 0.OOE+00 2.60E+00 9.40E+00 TM L14638-01 11/19/2008 Ba-140 3.001E+00 4.20E+00 1.50E+01 TM L14638-01 11/19/2008 Be-7 -1.001E+00 1.30E+01 4.60E+01 TM L14638-01 11/19/2008 Ce-I141 -5.40E+00 2.50E+00 9.OOE+00 TM L14638-01 11/19/2008 Ce-144 8.1OE+00 7.90E+00 2.60E+01 TM L14638-01 11/19/2008 Co-57 8.OOE-01 1.00E+00 3.50E+00 TM L14638-01 11/19/2008 Co-58 -1.00E+00 1.70E+00 6.40E+00 TM L14638-01 11/19/2008 Co-60 2.1OE+00 2.30E+00 7.70E+00 TM L14638-01 11/19/2008 Cr-51 -2.50E+01 1.40E+01 5.OOE+01 TM L14638-01 11/19/2008 Cs-134 -1.70E+00 1.50E+00 6.50E+00 TM L14638-01 11/19/2008 Cs-137 1.30E+00 1.90E+00 6.50E+00 TM L14638-01 11/19/2008 Fe-59 -1.18E+01 4.80E+00 1.90E+01 TM L14638-01 11/19/2008 1-131 1.001E-02 1.80E-01 8.20E-01 TM L14638-01 11/19/2008 1-131 -7.90E+00 4.50E+00 1.70E+01 TM L14638-01 11/19/2008 K-40 1.35E+03 6.60E+0 I 9.80E+01 TM L14638-01 11/19/2008 La-140 3.OOE+00 4.20E+00 1.50E+01 TM L14638-01 11/19/2008 Mn-54 7.00E-01 1.80E+00 6.40E+00 TM L14638-01 11/19/2008 Nb-95 -4.OOE-01 2.1OE+00 7.50E+00 TM L14638-01 11/19/2008 Ru-103 -1.20E+00 1.70E+00 6.30E+00 TM L14638-01 11/19/2008 Ru-106 9.OOE+00 1.60E+01 5.40E+01 TM L14638-01 11/19/2008 Sb-124 -2.30E+00 5.OOE+00 1.90E+01 TM L14638-01 11/19/2008 Sb-125 -5.90E+00 3.60E+00 1.40E+01 TM L14638-01 11/19/2008 Se-75 -3.00E-01 1.80E+00 6.20E+00 TM L14638-01 11/19/2008 Zn-65 -2.1OE+00 5.1OE+00 1.80E+01 TM L14638-01 11/19/2008 Zr-95 -7.50E+00 3. I OE+00 1.20E+01 TM L14726-01 12/18/2008 AcTh-228 1.05E+01 7.OOE+00 2.30E+01 TM L14726-01 12/18/2008 Ag-108m -8.OOE-01 1.50E+00 5.30E+00 TM L14726-01 12/18/2008 Ag-1 10m 2. I OE+00 2.60E+00 8.70E+00 TM L14726-01 12/18/2008 Ba-140 -5.OOE-01 3.70E+00 1.40E+01 TM L14726-01 12/18/2008 Be-7 -8.OOE+00 1.50E+01 5.30E+01 TM L14726-01 12/18/2008 Ce-141 2.60E+00 2.80E+00 9.40E+00 TM L14726-01 12/18/2008 Ce-144 9.OOE-01 9.90E+00 3.40E+01 TM L14726-01 12/18/2008 Co-57 -6.OOE-01 1.30E+00 4.50E+00 TM L14726-01 12/18/2008 Co-58 -2.40E+00 1.80E+00 6.60E+00 TM L14726-01 12/18/2008 Co-60 -4.OOE-01 1.70E+00 6.20E+00 TM L14726-01 12/18/2008 Cr-51 4.00E+00 1.60E+01 5.40E+01 TM L14726-01 12/18/2008 Cs-134 -2.OOE+00 1.90E+00 7.20E+00 TM L14726-01 12/18/2008 Cs-137 -2.60E+00 1.90E+00 7.00E+00 TM L14726-01 12/18/2008 Fe-59 -1.70E+00 4.OOE+00 1.40E+01 TM L14726-01 12/18/2008 1-131 4.30E+00 4.20E+00 1.40E+01 TM L14726-01 12/18/2008 1-131 3.60E-01 2.80E-01 9.OOE-01 TM L14726-01 12/18/2008 K-40 1.28E+03 5.90E+01 8.70E+01 TM L14726-01 12/18/2008 La-140 -5.OOE-01 3.70E+00 1.40E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 173

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TM TM L14726-01 L14726-01 12/18/2008 12/18/2008 Mn-54 Nb-95 1.1 OE+00 3.80E+00 1.70E+00 2.70E+00 6.OOE+00 8.90E+00 I

TM L14726-01 12/18/2008 Ru-103 -4.40E+00 2.OOE+00 7.40E+00 TM TM TM L14726-01 LI14726-01 L14726-01 12/18/2008 12/18/2008 12/18/2008 Ru-106 Sb-124 Sb-125

-1.30E+01

-6.80E+00 3.OOE+00 1.60E+01 4.30E+00 4.30E+00 5.70E+01 1.70E+01 1.50E+01 I

TM TM TM L14726-01 L14726-01 L14726-01 12/18/2008 12/18/2008 12/18/2008 Se-75 Zn-65 Zr-95

-1.00E-01 1.44E+01

-2.30E+00 2.OOE+00 8.OOE+00 3.001E+00 6.90E+00 2.60E+01 1.101E+01 I

TM L13502-02 1/16/2008 AcTh-228 -6.50E+00 7.90E+00 2.90E+01 TM TM TM L13502-02 L13502-02 L13502-02 1/16/2008 1/16/2008 1/16/2008 Ag-108m Ag-1I Om Ba-140 1.30E+00

-6.00-01

-6.1 OE+00 1.50E+00 2.60E+00 3.OOE+00 5.10E+00 9.30E+00 1.30E+01 I

TM TM TM L13502-02 L13502-02 LI3502-02 1/16/2008 1/16/2008 1/16/2008 Be-7 Ce-141 Ce- 144

-7.00E+00

-6.40E+00 3.001E+00 1.40E+01 2.90E+00 1.00E+01 5.20E+01 1.1 OE+0 1 3.40E+01 I

TM L13502-02 1/16/2008 Co-57 - 1.90E+00 1.30E+00 4.80E+00 TM TM TM L13502-02 L13502-02 L13502-02 1/16/2008 1/16/2008 1/16/2008 Co-58 Co-60 Cr-51 9.OOE-01

-1.20E+00

-1.001E+01 1.90E+00 2.20E+00 1.70E+01 6.80E+00 8.20E+00 6.1OE+01 I

TM TM TM L13502-02 L13502-02 L13502-02 1/16/2008 1/16/2008 1/16/2008 Cs-134 Cs-137 Fe-59

-2.80E+00 2.70E+00 6.70E+00 2.30E+00 2.30E+00 4.20E+00 8.50E+00 7.50E+00 1.40E+01 I

TM L13502-02 1/16/2008 1-131 -1.92E-01 2.70E-02 8.80E-01 TM L13502-02 1/16/2008 1-131 8.OOE-01 3.30E+00 1.20E+01 TM TM TM L13502-02 L13502-02 L13502-02 1/16/2008 1/16/2008 1/16/2008 K-40 La-140 Mn-54 1.48E+03

-6.1OE+00

-I.30E+00

7. 1OE+01 3.001E+00 1.70E+00 9.20E+0 1 1.30E+01 6.40E+00 I

1/16/2008 1.80E+00 2.70E+00 9.30E+00 TM TM TM L13502-02 L13502-02 L13502-02 1/16/2008 1/16/2008 Nb-95 Ru-103 Ru-106

- 1.1OE+00 1.00E+01 1.90E+00 1.70E+01 6.80E+00 6.OOE+01 I

TM TM TM L13502-02 L13502-02 L13502-02 1/16/2008 1/16/2008 1/16/2008 Sb-124 Sb-125 Se-75 1.60E+00 4.70E+00

-3.90E+00 4.30E+00 4.60E+00 2.30E+00 1.60E+01 1.60E+01 8.30E+00 I

2.50E+01 TM TM TM L13502-02 L13502-02 LI13608-02 1/16/2008 1/16/2008 2/13/2008 Zn-65 Zr-95 AcTh-228

-3.80E+00 2.30E+00

-1.05E+01 6.80E+00 3.20E+00 8.20E+00 1.1OE+01 3.30E+01 I

TM L 13608-02 2/13/2008 Ag-108m 2.20E+00 1.90E+00 6.40E+00 TM TM TM LI 3608-02 L13608-02 L13608-02 2/13/2008 2/13/2008 2/13/2008 Ag-I 10m Ba-140 Be-7 9.00E-01 1.001E-01 1.20E+01 3.OOE+00 3.60E+00 1.70E+01 1.10E+01 1.40E+01 6.10E+01 I

3.30E+00 1.10E+01 TM TM TM L13608-02 L13608-02 L13608-02 2/13/2008 2/13/2008 2/13/2008 Ce-141 Ce-144 Co-57 4.40E+00

-8.OOE+00 3.OOE+00 1.20E+01 1.50E+00 4.40E+01 4.90E+00 I

TM L13608-02 2/13/2008 Co-58 2.80E+00 2.30E+00 7.80E+00 TM TM TM L13608-02 LI3608-02 L13608-02 2/13/2008 2/13/2008 2/13/2008 Co-60 Cr-5I Cs-134

-3.80E+00

-I .00E+00

-2.30E+00 2.50E+00 2.00E+01 1.60E+00 1.00E+01 7.10E+01 7.80E+00 I

TM TM TM L13608-02 L 13608-02 L13608-02 2/13/2008 2/13/2008 2/13/2008 Cs-137 Fe-59 1-131 6.50E+00

-I.14E+01

-2.OOE+00 3.IOE+00 5.30E+00 4.30E+00 9.80E+00 2.20E+01 1.50E+01 I

TM L13608-02 2/13/2008 1-131 9.00E-02 1.80E-01 9.00E-01 TM L13608-02 2/13/2008 K-40 1.39E+03 8.20E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 1.00E+02

I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 174 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 15 L13608-02 2/13/2008 La-140 1.00E-01 3.60E+00 1.40E+01 TM 15' L13608-02 2/13/2008 Mn-54 -2.1 OE+00 1.90E+00 7.70E+00 TM 15 L13608-02 2/13/2008 Nb-95 -4.OOE+00 2.90E+00 1.1 OE+0 1 TM 15 L13608-02 2/13/2008 Ru-I103 -7.70E+00 2.1OE+00 9. I10E+00 TM 15 L13608-02 2/13/2008 Ru-106 -1.70E+01 1.90E+01 7.20E+01 TM 15 L13608-02 2/13/2008 Sb-124 8.20E+00 5.80E+00 1.90E+01 TM 15 L13608-02 2/13/2008 Sb-125 5.70E+00 5.50E+00 1.90E+01 TM 15 L13608-02 2/13/2008 Se-75 0.OOE+00 2.60E+00 9.20E+00 TM 15 LI13608-02 2/13/2008 Zn-65 -1.10E+00 6.OOE+00 2.20E+01 TM 15 L,13608-02 2/13/2008 Zr-95 0.OOE+00 3.60E+00 1.30E+01 TM 15 L13691-02 3/11/2008 AcTh-228 6.60E+00 8.80E+00 3.OOE+01 TM 15 L13691-02 3/11/2008 Ag-108m 2.1OE+00 1.50E+00 5.1OE+00 TM 15 L13691-02 3/11/2008 Ag-1I Om 1.1 OE+00 2.80E+00 9.70E+00 TM 15 L13691-02 3/11/2008 Ba-140 -3.OOE-01 3.1OE+00 1.20E+01 TM 15 L13691-02 3/11/2008 Be-7 4.OOE+00 1.40E+01 5.OOE+01 TM 15 L13691-02 3/11/2008 Ce-I141 -1.80E+00 3.OOE+00 1.00E+01 TM 15 L13691-02 3/11/2008 Ce-144 -6.80E+00 8.90E+00 3.10E+01 TM 15 L13691-02 3/11/2008 Co-57 4.OOE-01 1.20E+00 4.OOE+00 TM 15 L13691-02 3/11/2008 Co-58 1.70E+00 2.OOE+00 6.90E+00 TM 15 L13691-02 3/11/2008 Co-60 1.50E+00 2.40E+00 8.50E+00 TM 15 L13691-02 3/11/2008 Cr-5I -7.OOE+00 1.40E+01 4.90E+01 TM 15 L13691-02 3/11/2008 Cs-134 1.80E+00 1.20E+00 5.50E+00 TM 15 L13691-02 3/11/2008 Cs-137 6.90E+00 2.50E+00 7.90E+00 TM 15 L13691-02 3/11/2008 Fe-59 2.1 OE+00 5.20E+00 1.80E+01 TM 15 L13691-02 3/11/2008 1-131 -1.04E-01 1.90E-02 6.80E-01 TM 15 L13691-02 3/11/2008 1-131 4.50E+00 3.20E+00 1.10E+01 TM 15 L13691-02 3/11/2008 K-40 1.53E+03 7.50E+01 1.1OE+02

TM 15 L13691-02 3/11/2008 La-140 -3.00E-01 3.1OE+00 1.20E+01 TM 15 L13691-02 3/11/2008 Mn-54 3.1OE+00 1.90E+00 6.40E+00 TM 15 L13691-02 3/11/2008 Nb-95 -1.70E+00 2.30E+00 8.50E+00 TM 15 L13691-02 3/11/2008 Ru-103 2.OOE+00 1.90E+00 6.30E+00 TM 15 L13691-02 3/11/2008 Ru-106 0.OOE+00 1.60E+01 5.60E+01 TM 15 L13691-02 3/11/2008 Sb-124 -1.20E+01 4.70E+00 2. IOE+01 TM 15 L13691-02 3/11/2008 Sb-125 2.30E+00 4.40E+00 1.50E+01 TM 15 L13691-02 3/11/2008 Se-75 2.1OE+00 1.90E+00 6.30E+00 TM 15 L13691-02 3/11/2008 Zn-65 3.70E+00 4.40E+00 1.50E+01 TM 15 L 13691-02 3/11/2008 Zr-95 1.00E+00 3.40E+00 1.20E+01 TM 15 L13804-02 4/9/2008 AcTh-228 3.30E+00 9.80E+00 3.50E+01 TM 15 L13804-02 4/9/2008 Ag-108m 2.OOE-01 1.70E+00 6.20E+00 TM 15 L13804-02 4/9/2008 Ag-1I Om -1.20E+00 3.40E+00 1.30E+01 TM 15 L13804-02 4/9/2008 Ba-140 1.50E+00 3.1OE+00 1.20E+01 TM 15 L13804-02 4/9/2008 Be-7 8.OOE+00 2.OOE+01 6.90E+01 TM 15 LI13804-02 4/9/2008 Ce-I141 -4.70E+00 3.20E+00 1.20E+01 TM 15 L13804-02 4/9/2008 Ce-144 4.OOE+00 1.10E+01 3.60E+01 TM 15 L13804-02 4/9/2008 Co-57 -9.OOE-01 1.40E+00 5.OOE+00 TM 15 L13804-02 4/9/2008 Co-58 4.70E+00 2.50E+00 7.80E+00 TM 15 L13804-02 4/9/2008 Co-60 6.OOE-01 2.80E+00 1.00E+01 TM 15 L13804-02 4/9/2008 Cr-5I 7.OOE+00 1.50E+01 5.30E+01 TM 15 LI 3804-02 4/9/2008 Cs-134 3.OOE-01 1.60E+00 7.60E+00 TM 15 L13804-02 4/9/2008 Cs-137 -3.OOE-01 2.20E+00 8.IOE+00 TM 15 L13804-02 4/9/2008 Fe-59 -8.OOE+00 5.80E+00 2.30E+01 TM 15 L13804-02 4/9/2008 1-131 6.20E+00 3.30E+00 1.1 OE+01 TM 15 L13804-02 4/9/2008 1-131 -1.52E-01 2.70E-02 9.90E-01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 175

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I TM TM L13804-02 L13804-02 4/9/2008 K-40 4/9/2008 La-140 1.63E+03 1.50E+00 9.30E+01 3.IOE+00 1.1 OE+02 1.20E+01 I

TM L13804-02 4/9/2008 Mn-54 -I.40E+00 2.50E+00 9.50E+00 TM TM LI3804-02 LI3804-02 4/9/2008 Nb-95 4/9/2008 Ru-103 2.OOE+00

-5.OOE-01 2.50E+00 2.50E+00 8.70E+00 8.90E+00 I

TM L13804-02 4/9/2008 Ru-106 7.OOE+00 1.90E+01 6.70E+0 1 TM TM TM L13804-02 L13804-02 L13804-02 4/9/2008 Sb-124 4/9/2008 Sb-125 4/9/2008 Se-75

-7.90E+00

- 1.20E+00 2.50E+00 6.40E+00 5.20E+00 2.40E+00 2.70E+01 1.90E+01 8.1OE+00 I

5.20E+00 1.90E+01 TM TM TM L13804-02 L13804-02 L13845-02 4/9/2008 Zn-65 4/9/2008 Zr-95 4/23/2008 AcTh-228 2.40E+00 1.70E+00 7.70E+00 3.90E+00 7.70E+00 1.40E+01 2.60E+01 i

TM L13845-02 4/23/2008 Ag-108m -I.70E+00 1.60E+00 6.1OE+00 TM TM TM L13845-02 L13845-02 L13845-02 4/23/2008 Ag-110m 4/23/2008 Ba-140 4/23/2008 Be-7

-3.OOE-01 3.70E+00

-1.30E+01 2.40E+00 3.30E+00 1.80E+01 8.80E+00 1.10E+01 6.50E+01 I

-1.60E+00 2.70E+00 9.60E+00 i

TM L13845-02 4/23/2008 Ce-141 TM L13845-02 4/23/2008 Ce- 144 0.OOE+00 1.1OE+0 1 3.90E+01 TM L13845-02 4/23/2008 Co-57 1.50E+00 1.40E+00 4.60E+00 TM L13845-02 4/23/2008 Co-58 0.OOE+00 1.90E+00 7.OOE+00 TM TM TM L13845-02 L13845-02 L13845-02 4/23/2008 Co-60 4/23/2008 Cr-51 4/23/2008 Cs-134 6.OOE-01

-3.30E+01 5.OOE-01

2. 1OE+00 1.70E+01 1.60E+00 7.60E+00 6.40E+01 6.90E+00 I

TM L13845-02 4/23/2008 Cs-137 -I1.10E+00 2.OOE+00 7.50E+00 TM TM L13845-02 L13845-02 4/23/2008 Fe-59 4/23/2008 1-131 4/23/2008 1-131 1.50E+00 1.OOE-02

-8.OOE-01 4.60E+00 1.50E-01 3.70E+00 1.60E+01 8.70E-01 1.30E+01 I

TM L13845-02 TM TM TM L13845-02 L13845-02 L13845-02 4/23/2008 K-40 4/23/2008 La-140 4/23/2008 Mn-54 1.59E+03 3.70E+00 2.90E+00 7.60E+0 I 3.30E+00 1.80E+00 9.20E+01 1.10E+01 5.90E+00

,I TM L13845-02 4/23/2008 Nb-95 -2.20E+00 2.20E+00 8.50E+00 TM TM TM L13845-02 L13845-02 L13845-02 4/23/2008 Ru-103 4/23/2008 Ru-106 4/23/2008 Sb-124

-2.20E+00

-2.90E+01 4.OOE+00 1.80E+00 1.70E+01 3.20E+00 7.OOE+00 6.50E+01 1.1 OE+01 I

TM TM TM L13845-02 L13845-02 L13845-02 4/23/2008 Sb-125 4/23/2008 Se-75 4/23/2008 Zn-65

-5.30E+00 1.80E+00

-6.70E+00 5.OOE+00 2.1OE+00 4.50E+00 1.80E+01 7.20E+00 1.80E+01 i

TM L13845-02 4/23/2008 Zr-95 4.1 OE+00 3.30E+00 1.IOE+01 TM TM L13909-02 L13909-02 L13909-02 5/7/2008 AcTh-228 5/7/2008 Ag-108m 5/7/2008 Ag-1 10m

-8.20E+00 3.20E+00 1.00E+00 8.OOE+00 1.60E+00 3.OOE+00 3.OOE+01 5.20E+00 1.10E+01 I

TM TM TM TM L13909-02 LI3909-02 L13909-02 5/7/2008 Ba-140 5/7/2008 Be-7 5/7/2008 Ce-I141 1.90E+00

-3.60E+01 3.40E+00 3.70E+00 1.70E+01 3.OOE+00 1.30E+01 6.60E+01 1.00E+01 i

TM L13909-02 5/7/2008 Ce- 144 -6.OOE+00 1.10E+01 4.OOE+01 TM TM L 13909-02 LI 3909-02 5/7/2008 Co-57 5/7/2008 Co-58 8.OOE-01 2.60E+00 2.20E+00 1.50E+00 2.OOE+00 2.OOE+00 5.20E+00 6.70E+00 6.80E+00 I

TM L13909-02 5/7/2008 Co-60 TM TM TM L13909-02 LI3909-02 L13909-02 5/7/2008 Cr-51 5/7/2008 Cs-134 5/7/2008 Cs-137 1.00E+00

-5.OOE-01

-7.OOE-01 1.70E+01 1.80E+00 1.90E+00 6.OOE+01 7.80E+00 6.90E+00 i

TM L13909-02 5/7/2008 Fe-59 -9.OOE-01 5.20E+00 1.90E+01 TM L13909-02 5/7/2008 1-131 -7.OOE-03 9.80E-02 5.90E-01

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

I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 176 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM LI13909-02 5/7/2008 1-131 -3.OOE-01 3.50E+00 I.20E+01 TM L13909-02 5/7/2008 K-40 1.48E+03 7.40E+01 9.90E+0I TM L13909-02 5/7/2008 La-140 1.90E+00 3.70E+00 1.30E+01 TM L13909-02 5/7/2008 Mn-54 -2.OOE-01 1.90E+00 7.OOE+00 TM L13909-02 5/7/2008 Nb-95 1.70E+00 2.60E+00 8.80E+00 TM L13909-02 5/7/2008 Ru-103 -2. 1OE+00 2.20E+60 8.1OE+00 TM L13909-02 5/7/2008 Ru-106 1.90E+01 1.80E+01 6.10E+01 TM L13909-02 5/7/2008 Sb-124 1.70E+00 4.20E+00 1.60E+01 TM LI13909-02 5/7/2008 Sb-125 - 1.40E+00 4.90E+00 1.80E+01 TM L13909-02 5/7/2008 Se-75 2.OOE+00 2.40E+00 8.OOE+00 TM L13909-02 5/7/2008 Zn-65 -7.40E+00 5.20E+00 2.OOE+01 TM L13909-02 5/7/2008 Zr-95 - 1.60E+00 3.50E+00 1.30E+01 TM L13956-02 5/21/2008 AcTh-228 -8.90E+00 7.40E+00 2.90E+01 TM L13956-02 5/21/2008 Ag-108m -7.OOE-01 1.60E+00 6.OOE+00 TM L13956-02 5/21/2008 Ag- I1Oim 3.80E+00 2.90E+00 9.60E+00 TM L13956-02 5/21/2008 Ba-140 -1. 10E+00 2.40E+00 1.00E+01 TM L13956-02 5/21/2008 Be-7 1.00E+00 1.80E+01 6.30E+01 TM L13956-02 5/21/2008 Ce-141 -2.20E+00 2.90E+00 1.00E+01 TM L13956-02 5/21/2008 Ce-144 2.OOE+00 1.1 OE+0I 3.80E+01 TM L13956-02 5/21/2008 Co-57 -1.00E-0I 1.40E+00 5.OOE+00 TM L13956-02 5/21/2008 Co-58 8.OOE-0I 1.80E+00 6.40E+00 TM L13956-02 5/21/2008 Co-60 4.OOE-0I 2.1OE+00 7.90E+00 TM L13956-02 5/21/2008 Cr-51 3.60E+0I 1.90E+01 6.30E+01 TM L13956-02 5/21/2008 Cs-134 1.20E+00 1.70E+00 7.90E+00 TM L13956-02 5/21/2008 Cs-137 -3.60E+00 2. 10E+00 8.40E+00 TM L1,3956-02 5/21/2008 Fe-59 -6.20E+00 5.OOE+00 1.90E+01 TM L13956-02 5/21/2008 1-131 5.60E+00 3.60E+00 1.20E+01 TM L13956-02 5/21/2008 1-131 -8.OOE-02 1.20E-02 9.10E-01 TM L13956-02 5/21/2008 K-40 1.40E+03 7.80E+01 I .00E+02 TM L13956-02 5/21/2008 La-140 -I.10E+00 2.40E+00 1.00E+01 TM L13956-02 5/21/2008 Mn-54 -2.40E+00 2.OOE+00 7.70E+00 TM L13956-02 5/21/2008 Nb-95 0.OOE+00 2.20E+00 8.10E+00 TM L13956-02 5/21/2008 Ru-103 7.OOE-01 I .90E+00 6.70E+00 TM L,13956-02 5/21/2008 Ru-106 1.30E+01 I.90E+01 6.50E+01 TM L113956-02 5/21/2008 Sb-124 2.40E+00 4.OOE+00 1.50E+01 TM L13956-02 5/21/2008 Sb-125 -3.90E+00 5.OOE+00 I .90E+01 TM L13956-02 5/21/2008 Se-75 2. 1OE+00 2.20E+00 7.60E+00 TM L13956-02 5/21/2008 Zn-65 5.OOE-0I 5.20E+00 1.90E+01 TM L13956-02 5/21/2008 Zr-95 6.70E+00 3.50E+00 !.10E+01 TM L14012-02 6/5/2008 AcTh-228 -1.28E+01 9.20E+00 3.50E+01 TM L14012-02 6/5/2008 Ag-108m -2.30E+00 1.90E+00 7.OOE+00 TM L14012-02 6/5/2008 Ag-110m -3.OOE-01 3.OOE+00 1.10E+01 TM L14012-02 6/5/2008 Ba-140 9.OOE-01 3.80E+00 1.50E+01 TM L14012-02 6/5/2008 Be-7 9.OOE+00 1.80E+01 6.20E+01 TM L14012-02 6/5/2008 Ce-141 I.OOE-0I 2.90E+00 9.90E+00 TM L14012-02 6/5/2008 Ce-144 -7.OOE+00 1.1 OE+0I 3.70E+01 TM L14012-02 6/5/2008 Co-57 6.OOE-0I 1.40E+00 4.70E+00 TM L14012-02 6/5/2008 Co-58 2.30E+00 2.40E+00 8.20E+00 TM L14012-02 6/5/2008 Co-60 -2.80E+00 2.80E+00 1.10E+01 TM L14012-02 6/5/2008 Cr-51 -2.20E+01 1.80E+01 6.60E+01 TM L14012-02 6/5/2008 Cs-134 2.30E+00 1.60E+00 7.20E+00 TM L14012-02 6/5/2008 Cs-137 -3.60E+00 2.20E+00 8.40E+00 TM L14012-02 6/5/2008 Fe-59 4.30E+00 5.80E+00 2.00E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 177

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TM TM TM L14012-02 L14012-02 L14012-02 6/5/2008 6/5/2008 6/5/2008 1-131 1-131 K-40 I.OOE-01 1.90E+00 1.72E+03 2.OOE-01

4. 1OE+00 9.20E+01 9.00E-0 1 1.40E+OI 1.30E+02

I 9.OOE-01 3.80E+00 1.50E+01 I

TM L14012-02 6/5/2008 La- 140 TM L14012-02 6/5/2008 Mn-54 4.OOE-01 2.70E+00 9.60E+00 TM L14012-02 6/5/2008 Nb-95 2.40E+00 2.60E+00 8.90E+00 TM L14012-02 6/5/2008 Ru-103 -1.40E+00 2.30E+00 8.30E+00 TM TM TM L14012-02 L14012-02 L14012-02 6/5/2008 6/5/2008 6/5/2008 Ru-106 Sb-124 Sb-125

-1.90E+01

-4.60E+00

-2.50E+00 1.90E+01 5.40E+00 5.60E+00 7.20E+0 1 2.30E+01 2.OOE+01 I

TM L14012-02 6/5/2008 Se-75 2.40E+00 2.40E+00 8.20E+00 TM L14012-02 6/5/2008 Zn-65 -1.05E+01 6.50E+00 2.50E+01 TM L14012-02 6/5/2008 Zr-95 -7.OOE-01 4.1OE+00 1.50E+01 TM L14053-02 6/18/2008 AcTh-228 8.60E+00 5.90E+00 1.90E+01 TM TM TM L14053-02 L14053-02 L14053-02 6/18/2008 6/18/2008 6/18/2008 Ag-108m Ag-110m Ba-140 2.32E+00

-2.OOE-01

- 1.1OE+00 8.60E-0I 1.60E+00 3.40E+00 2.80E+00 5.50E+00 1.20E+01 I

TM L14053-02 6/18/2008 Be-7 7.40E+00 9.00E+00 3.00E+01 TM TM TM L14053-02 L14053-02 L14053-02 6/18/2008 6/18/2008 6/18/2008 Ce-141 Ce-144 Co-57

-6.00E-01

-3.OOE+00 6.30E-01 1.60E+00 4.50E+00 5.70E-01 5.40E+00 1.50E+01 1.90E+00 U

TM TM TM L14053-02 L14053-02 L14053-02 6/18/2008 6/18/2008 6/18/2008 Co-58 Co-60 Cr-51 I.OOE-01

-3.001E-01 0.OOE+00 1.20E+00 1.30E+00 1.00E+01 4.20E+00 4.70E+00 3.40E+01 I

TM L14053-02 6/18/2008 Cs-134 -1.04E+00 7.80E-01 3.60E+00 TM TM TM L14053-02 L14053-02 L14053-02 6/18/2008 6/18/2008 6/18/2008 Cs-137 Fe-59 1-131

-1.40E+00 0.OOE+00

-8.OOE-01 1.1OE+00 3.1OE+00 3.80E+00 3.90E+00 1.10E+01 1.30E+01 U

TM TM TM L14053-02 L14053-02 L14053-02 6/18/2008 6/18/2008 6/18/2008 1-131 K-40.

La- 140 6.00E-02 1.52E+03

- 1.1OE+00 1.80E-01 4.70E+0 I 3.40E+00 9.40E-01 7.70E+01 1.20E+01 I

L14053-02 6/18/2008 -7.OOE-01 1.1OE+00 3.90E+00 I

TM Mn-54 TM L14053-02 6/18/2008 Nb-95 -1.90E+00 1.50E+00 5.50E+00 TM L14053-02 6/18/2008 Ru-103 -2.60E+00 1.20E+00 4.40E+00 a

TM L14053-02 6/18/2008 Ru-106 -1.80E+00 8.80E+00 3.10E+01 TM L14053-02 6/18/2008 Sb-124 -4.1 OE+00 3.OOE+00 1.10E+01 TM L14053-02 6/18/2008 Sb-125 1.80E+00 2.70E+00 9. 1OE+00 TM LI-4053-02 6/18/2008 Se-75 -7.OOE-01 1.10E+00 3.80E+00 TM L14053-02 6/18/2008 Zn-65 -7.40E+00 3.1OE+00 1.!0E+01 TM TM TM L14053-02 L14109-02 L14109-02 6/18/2008 7/2/2008 7/2/2008 Zr-95 AcTh-228 Ag-108m 6.OOE-01 7.30E+00

-1.00E-01 2.30E+00 7.OOE+00 1.20E+00 7.80E+00 2.40E+01 4.20E+00 I

TM TM TM L14109-02 L14109-02 L14109-02 7/2/2008 7/2/2008 7/2/2008 Ag-1 10m Ba-140 Be-7

-6.40E+00

-1.00E+00

-1.1OE+01 2.00E+00 3.60E+00 1.30E+01 8.20E+00 I.30E+01 4.70E+01 I

7/2/2008 2.30E+00 1.80E+00 6.OOE+00 I

TM L14109-02 Ce-141 TM L14109-02 7/2/2008 Ce-I144 1.80E+00 6.1OE+00 2.10E+01 TM L14109-02 7/2/2008 Co-57 -4.60E-01 7.60E-01 2.60E+00 TM L14109-02 7/2/2008 Co-58 1.60E+00 1.60E+00 5.60E+00 TM TM TM L14109-02 L14109-02 L14109-02 7/2/2008 7/2/2008 7/2/2008 Co-60 Cr-51 Cs-134

-8.OOE-01

-1.40E+01 2.OOE-01 2.OOE+00 1.20E+01 1.001E+00 7.30E+00 4.40E+01 4.30E+00 I

7/2/2008 -4.OOE-01 1.60E+00 5.60E+00 I

TM L14109-02 Cs-137

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 178 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCiikg)

TM 15 L14109-02 7/2/2008 Fe-59 2.70E+00 4.OOE+00 1.40E+01 TM 15 L14109-02 7/2/2008 1-131 1.60E+00 3.OOE+00 1.00E+01 TM 15 LI4109-02 7/2/2008 1-131 1.30E-01 2.OOE-01 8.70E-01 TM 15 L14109-02 7/2/2008 K-40 1.57E+03 6.40E+01 9.20E+01 TM 15 L14109-02 7/2/2008 La-140 -1.00E+00 3.60E+00 1.30E+01 TM 15 L14109-02 7/2/2008 Mn-54 3.OOE+00 1.50E+00 5.OOE+00 TM 15 L14109-02 7/2/2008 Nb-95 2.80E+00 1.90E+00 6.30E+00 TM 15 L14109-02 7/2/2008 Ru-103 -2.40E+00 2.1OE+00 7.70E+00 TM 15 L14109-02 7/2/2008 Ru-106 1.60E+01 1.40E+01 4.50E+01 TM 15 L14109-02 7/2/2008 Sb-124 6.00E-01 4.50E+00 1.60E+01 TM 15 L14109-02 7/2/2008 Sb-125 5.OOE-01 3.70E+00 2.40E+01 TM 15 L14109-02 7/2/2008 Se-75 3.20E+00 1.50E+00 4.90E+00 TM 15 L14109-02 7/2/2008 Zn-65 3.70E+00 4.1OE+00 1.40E+01 TM 15 L14109-02 7/2/2008 Zr-95 -3.OOE+00 3.OOE+00 1.10E+01 TM 15 L14162-02 7/16/2008 AcTh-228 1.84E+01 7.30E+00 2.30E+01 TM 15 L14162-02 7/16/2008 Ag-108m 0.OOE+00 1.20E+00 4.OOE+00 TM 15 L14162-02 7/16/2008 Ag-110m 5.60E+00 2.OOE+00 6. 10E+00 TM 15 L14162-02 7/16/2008 Ba-140 3.60E+00 3.50E+00 1.20E+01 TM 15 L14162-02 7/16/2008 Be-7 1.40E+01 1.20E+01 4.00E+01 TM 15 L14162-02 7/16/2008 Ce-141 2.40E+00 2.OOE+00 6.60E+00 TM 15 L14162-02 7/16/2008 Ce-144 -4.20E+00 6.1OE+00 2.10E+01 TM 15 L14162-02 7/16/2008 Co-57 -1.60E-01 7.70E-01 2.70E+00 TM 15 L14162-02 7/16/2008 Co-58 -1.30E+00 1.70E+00 6.1OE+00 TM 15 L14162-02 7/16/2008 Co-60 2.30E+00 2.OOE+00 6.80E+00 TM 15 L14162-02 7/16/2008 Cr-51 -8.OOE+00 1.20E+01 4.10E+01 TM 15 L14162-02 7/16/2008 Cs-134 1.80E+00 1.00E+00 4.40E+00 TM 15 L14162-02 7/16/2008 Cs-137 3.60E+00 1.60E+00 4.90E+00 TM 15 L14162-02 7/16/2008 Fe-59 -8.OOE-01 4.1OE+00 1.50E+01 TM 15 L14162-02 7/16/2008 1-131 1.40E-01 2.20E-01 9.20E-01 TM 15 L14162-02 7/16/2008 1-131 8.OOE-01 3.1OE+00 1.IOE+01 TM 15 L14162-02 7/16/2008 K-40 1.68E+03 6.60E+01 9.30E+01 TM 15 L14162-02 7/16/2008 La- 140 3.60E+00 3.50E+00 1.20E+01 TM 15 L14162-02 7/16/2008 Mn-54 -1.001E-01 1.70E+00 5.80E+00 TM 15 L14162-02 7/16/2008 Nb-95 1.IOE+00 2.00E+00 6.90E+00 TM 15 L14162-02 7/16/2008 Ru-103 2.00E-01 1.60E+00 5.40E+00 TM 15 L14162-02 7/16/2008 Ru-106 2.OOE+00 1.30E+01 4.50E+01 TM 15 L14162-02 7/16/2008 Sb-124 2.50E+00 4.OOE+00 1.40E+01 TM 15 L14162-02 7/16/2008 Sb-125 1.1OE+00 3.50E+00 1.20E+01 TM 15 L14162-02 7/16/2008 Se-75 -1.00E+00 1.50E+00 5.40E+00 TM 15 L14162-02 7/16/2008 Zn-65 -6.30E+00 4.20E+00 1.60E+01 TM 15 L14162-02 7/16/2008 Zr-95 -2.60E+00 2.90E+00 1.1OE+01 TM 15 L14269-02 8/13/2008 AcTh-228 1.56E+01 7.50E+00 2.40E+01 TM 15 L14269-02 8/13/2008 Ag-108m -7.OOE-01 1.30E+00 4.50E+00 TM 15 L14269-02 8/13/2008 Ag-110m -1.30E+00 2.30E+00 8.40E+00 TM 15 L14269-02 8/13/2008 Ba-140 -1.60E+00 3.1OE+00 1.20E+01 TM 15 L14269-02 8/13/2008 Be-7 -2.OOE+01 1.30E+01 4.90E+01 TM 15 L14269-02 8/13/2008 Ce-141 -2.30E+00 2.50E+00 8.70E+00 TM 15 L14269-02 8/13/2008 Ce-144 -1.05E+01 7.50E+00 2.70E+01 TM 15 L14269-02 8/13/2008 Co-57 5.OOE-01 1.00E+00 3.40E+00 TM 15 L14269-02 8/13/2008 Co-58 -1.IOE+00 1.60E+00 6.OOE+00 TM 15 L14269-02 8/13/2008 Co-60 2.90E+00 2.OOE+00 6.50E+00 TM 15 L14269-02 8/13/2008 Cr-51 1.20E+01 1.40E+01 4.70E+01 TM 15 L14269-02 8/13/2008 Cs-134 -6.OOE-01 1.50E+00 6.40E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 179

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TM TM TM L14269-02 L14269-02 L14269-02 8/13/2008 Cs-137 8/13/2008 Fe-59 8/13/2008 1-131 6.20E+00

-5.90E+00 2.00E-01 2.30E+00 4.40E+00 3.1OE+00 7.20E+00 1.70E+01 1.IOE+01 U

3.80E-01 2.90E-01 9.40E-01 I

TM L14269-02 8/13/2008 1-131 TM L14269-02 8/13/2008 K-40 1.57E+03 7.OOE+01 8.90E+01 TM L14269-02 8/13/2008 La-140 -1.60E+00 3.10E+00 1.20E+01 TM L14269-02 8/13/2008 Mn-54 0.00E+00 1.70E+00 6.OOE+00 TM TM TM L14269-02 L14269-02 L14269-02 8/13/2008 Nb-95 8/13/2008 Ru-103 8/13/2008 Ru-106

-1.20E+00

-1.00E-01 1.00E+01 1.70E+00 1.70E+00 1.60E+01 6.50E+00 6.OOE+00 5.40E+01 I

L14269-02 8/13/2008 Sb-124 3.70E+00 4.OOE+00 1.40E+01 I

TM TM L14269-02 8/13/2008 Sb-125 -4.30E+00 3.80E+00 1.40E+01 TM L14269-02 8/13/2008 Se-75 -6.00E-01 1.70E+00 5.90E+00 TM L14269-02 8/13/2008 Zn-65 9.00E-01 4.20E+00 1.50E+01 TM L14269-02 8/13/2008 Zr-95 2.OOE-01 2.80E+00 9.90E+00 TM L14320-02 8/27/2008 AcTh-228 -3.OOE+00 1.00E+01 3.80E+01 TM L14320-02 8/27/2008 Ag-108m -3.OOE-01 2.1OE+00 7.80E+00 TM L14320-02 8/27/2008 Ag-I 10m 4.50E+00 3.70E+00 1.20E+01 TM L14320-02 8/27/2008 Ba-140 -1.00E+00 3.40E+00 1.40E+01 TM L14320-02 8/27/2008 Be-7 8.OOE+00 1.70E+01 6.20E+01 TM L14320-02 8/27/2008 Ce-141 -6.20E+00 3.80E+00 1.40E+01 TM TM TM L14320-02 L14320-02 L14320-02 8/27/2008 Ce- 144 8/27/2008 Co-57 8/27/2008 Co-58

-I.60E+01

-9.OOE-0 I 4.50E+00 1.40E+01 1.70E+00 2.80E+00 5.10E+01 6.OOE+00 9.OOE+00 I

L14320-02 8/27/2008 Co-60 6.OOE-01 3.001E+00 1.10E+01 I

TM TM L14320-02 8/27/2008 Cr-51 2.30E+01 2.20E+01 7.40E+01 TM L14320-02 8/27/2008 Cs-134 -1.50E+00 2.30E+00 I.IOE+01 TM L14320-02 8/27/2008 Cs-137 3.00E-01 2.70E+00 9.90E+00 TM TM TM L14320-02 L14320-02 L14320-02 8/27/2008 Fe-59 8/27/2008 1-131 8/27/2008 1-131 4.00E-01 2.90E-01 2.60E+00 5.40E+00 2.20E-01 4.40E+00 2.00E+01 6.80E-01 1.50E+01 I

L14320-02 8/27/2008 K-40 1.52E+03 1.00E+02 1.50E+02 *

/3 TM TM L14320-02 8/27/2008 La- 140 -1.001E+00 3.40E+00 1.40E+01 TM L14320-02 8/27/2008 Mn-54 3.10E+00 2.50E+00 8.60E+00 TM L14320-02 8/27/2008 Nb-95 -2.OOE-01 3.30E+00 1.20E+01 TM TM TM L14320-02 L14320-02 L14320-02 8/27/2008 Ru-103 8/27/2008 Ru-106 8/27/2008 Sb-124 3.90E+00 2.20E+01 0.OOE+00 3.20E+00 2.30E+01 5.90E+00 1.1 OE+0 I 8.OOE+01 2.30E+01 I

TM L14320-02 8/27/2008 Sb-125 1.60E+00 6. 1OE+00 2.30E+01 I

TM L14320-02 8/27/2008 Se-75 4.60E+00 3.OOE+00 9.90E+00 TM L14320-02 8/27/2008 Zn-65 -2.70E+00 6.80E+00 2.60E+01 TM L14320-02 8/27/2008 Zr-95 - 1.40E+00 3.70E+00 1.50E+01 TM TM TM L14365-02 L14365-02 L14365-02 9/11/2008 AcTh-228 9/11/2008 Ag- 108m 9/11/2008 Ag-110m 8.60E+00

-2.OOE+00 2.40E+00 9.40E+00 1.80E+00 2.70E+00 3.20E+01 6.90E+00 9.50E+00 I

2.50E+00 3.50E+00 1.30E+01 I

TM L14365-02 9/11/2008 Ba-140 TM L14365-02 9/11/2008 Be-7 8.00E+00 1.70E+01 5.90E+01 TM L14365-02 9/11/2008 Ce-141 -5.70E+00 3.30E+00 1.20E+01 TM L14365-02 9/11/2008 Ce-144 1.50E+01 1.20E+01 3.90E+01 TM TM TM L14365-02 L14365-02 L14365-02 9/11/2008 Co-57 9/11/2008 Co-58 9/11/2008 Co-60

-3. 1OE+00

-1.00E-01

-1.20E+00 1.60E+00 2.30E+00 3.30E+00 5.90E+00 8.60E+00 1.20E+01 1

9/11/2008 Cr-51 2.20E+01 2.OOE+01 6.80E+01 I

TM L14365-02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 180 U

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 15 L14365-02 9/11/2008 Cs-134 -2.OOE-01 1.80E+00 8.OOE+00 TM 15 L14365-02 9/11/2008 Cs-137 -3.OOE-01 2.50E+00 9.1OE+00 TM 15 L14365-02 9/11/2008 Fe-59 -8.OOE-01 5.OOE+00 1.90E+01 TM 15 L14365-02 9/11/2008 1-131 -6.50E+00 3.20E+00 1.30E+01 TM 15 L14365-02 9/11/2008 1-131 -9.30E-02 1.50E-02 5.80E-01 TM 15 L14365-02 9/11/2008 K-40 1.68E+03 1.00E+02 1.50E+02 TM 15 L14365-02 9/11/2008 La-140 2.50E+00 3.50E+00 1.30E+01 TM 15 L14365-02 9/11/2008 Mn-54 -1.00E-01 2.30E+00 8.50E+00 TM 15 L14365-02 9/11/2008 Nb-95 7.80E+00 2.70E+00 8.OOE+00 TM 15 L14365-02 9/11/2008 Ru-103 -3. 1OE+00 2.40E+00 9.1OE+00 TM 15 L14365-02 9/11/2008 Ru- 106 -3.80E+01 2.I0E+01 8.40E+01 TM 15 L14365-02 9/11/2008 Sb-124 0.OOE+00 6.OOE+00 2.30E+01 TM 15 L14365-02 9/11/2008 Sb-125 -3.60E+00 5.80E+00 2.10E+01 TM 15 L14365-02 9/11/2008 Se-75 -2.90E+00 2.20E+00 8.30E+00 TM 15 L14365-02 9/11/2008 Zn-65 6.50E+00 9.60E+00 3.30E+01 TM 15 LI4365-02 9/11/2008 Zr-95 3.30E+00 4.90E+00 1.70E+01 TM 15 L14424-02 9/24/2008 AcTh-228 -9.70E+00 9.30E+00 3.60E+01 TM 15 L14424-02 9/24/2008 Ag- 108m 4.OOE-01 2.OOE+00 7.1OE+00 TM 15 L14424-02 9/24/2008 Ag-l Inm 2.OOE+00 3.60E+00 1.30E+01 TM 15 L114424-02 9/24/2008 Ba-140 2.60E+00 3.80E+00 1.40E+01 TM 15 LI14424-02 9/24/2008 Be-7 -3.40E+01 1.90E+01 7.40E+01 TM 15 LI14424-02 9/24/2008 Ce-141 -5.70E+00 3.20E+00 1.20E+01 TM 15 LI14424-02 9/24/2008 Ce-144 0.OOE+00 1.20E+01 4.20E+01 TM 15 LI14424-02 9/24/2008 Co-57 2.20E+00 1.60E+00 5.30E+00 TM 15 LI14424-02 9/24/2008 Co-58 -5.90E+00 2.50E+00 1.00E+01 TM 15 LI14424-02 9/24/2008 Co-60 -5.OOE-01 2.90E+00 1.1OE+01 TM 15 LI14424-02 9/24/2008 Cr-51 -2.OOE+00 2.OOE+01 7.OOE+01 TM 15 L14424-02 9/24/2008 Cs-134 -2.OOE-01 1.70E÷00 8.1OE+00 TM 15 L14424-02 9/24/2008 Cs-137 9.OOE-01 2.60E+00 9.1OE+00 TM 15 L14424-02 9/24/2008 Fe-59 -4.OOE+00 6.40E+00 2.40E+01 TM 15 LI14424-02 9/24/2008 1-131 -1.46E-01 2.60E-02 8.90E-01 TM 15 L14424-02 9/24/2008 1-131 -1.OOE+00 3.60E+00 1.30E+01 TM 15 L114424-02 9/24/2008 K-40 1.46E+03 9.30E+01 1.50E+02 TM 15, L14424-02 9/24/2008 La-140 2.60E+00 3.80E+00 1.40E+01 TM 15 L14424-02 9/24/2008 Mn-54 -3.OOE-01 2.70E+00 9.70E+00 TM 15 L14424-02 9/24/2008 Nb-95 -2.90E+00 2.90E+00 1.10E+01 TM 15 L14424-02 9/24/2008 Ru-103 4.60E+00 2.40E+00 7.70E+00 TM 15 L14424-02 9/24/2008 Ru- 106 5.OOE+00 2.OOE+01 7.10E+01 TM 15 L14424-02 9/24/2008 Sb-124 1.60E+00 6.90E+00 2.60E+0 I TM 15 L14424-02 9/24/2008 Sb-125 -4.1 OE+00 5.90E+00 2.20E+01 TM 15 L14424-02 9/24/2008 Se-75 -4.OOE-01 2.60E+00 9.OOE+00 TM 15 L14424-02 9/24/2008 Zn-65 -2.20E+01 1.20E+01 4.50E+01 TM 15 L14424-02 9/24/2008 Zr-95 -3.OOE-01 4.1OE+00 1.50E+01 TM 15 L14550-02 10/22/2008 AcTh-228 9.40E+00 7.80E+00 2.60E+01 TM 15 L14550-02 10/22/2008 Ag-108m -1.70E+00 1.50E+00 5.60E+00 TM 15 L14550-02 10/22/2008 Ag-I IOm -2.70E+00 2.40E+00 9.40E+00 TM 15 L14550-02 10/22/2008 Ba-140 - 1.40E+00 3.50E+00 1.40E+01 TM 15 L14550-02 10/22/2008 Be-7 -8.OOE+00 1.40E+01 5.20E+01 TM 15 L14550-02 10/22/2008 Ce-141 -4.OOE-01 2.20E+00 7.60E+00 TM 15 L14550-02 10/22/2008 Ce-144 3.20E+00 7.70E+00 2.70E+01 TM 15 L14550-02 10/22/2008 Co-57 8.60E-01 9.10E-01 3.1OE+00 TM 15 L14550-02 10/22/2008 Co-58 -5.1 OE+00 2.OOE+00 8.30E+00 TM 15 L14550-02 10/22/2008 Co-60 -1.60E+00 1.70E+00 7.20E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 181

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TM TM TM L14550-02 L14550-02 L14550-02 10/22/2008 10/22/2008 10/22/2008 Cr-51 Cs-134 Cs-137 1.10E+01 2.20E+00

-9.OOE-01 1.30E+01 1.30E+00 1.70E+00 4.50E+01 5.30E+00 6.50E+00 I

TM L14550-02 10/22/2008 Fe-59 6.OOE-01 4.40E+00 1.60E+01 TM TM TM L14550-02 L14550-02 L14550-02 10/22/2008 10/22/2008 10/22/2008 1-131 1-131 K-40 3.OOE-01

-I.06E-01 1.26E+03 2.80E+00 1.90E-02 7.40E+0 I 1.00E+01 8.70E-01 1.1OE+02

I TM TM TM L14550-02 L14550-02 L14550-02 10/22/2008 10/22/2008 10/22/2008 La- 140 Mn-54 Nb-95

-1.40E+00 1.70E+00

-3.60E+00 3.50E+00 1.90E+00 2.30E+00 1.40E+01 6.40E+00 8.90E+00 I

TM 114550-02 10/22/2008 Ru-103 -I. 10E+00 1.90E+00 7.00E+00 TM TM TM L14550-02 L14550-02 L14550-02 10/22/2008 10/22/2008 10/22/2008 Ru-106 Sb-124 Sb-125 1.70E+01

-8.90E+00

-4.40E+00 1.60E+01 4.90E+00 4.40E+00 5.30E+01 2.20E+01 1.60E+01

'U TM TM TM L14550-02 L14550-02 L14550-02 10/22/2008 10/22/2008 10/22/2008 Se-75 Zn-65 Zr-95 1.50E+00

-5.50E+00

-4.OOE-01 1.90E+00 5.20E+00 3.90E+00 6.50E+00 2.OOE+01 1.40E+01 I

TM L14638-02 11/19/2008 AcTh-228 -2.1 OE+00 6.70E+00 2.40E+01 TM TM TM L14638-02 L14638-02 L14638-02 11/19/2008 11/19/2008 11/19/2008 Ag- 108m Ag-1 IOm Ba-140

-I.00E+00 I.OOE+00

-2.40E+00 1.40E+00 2.30E+00 3.80E+00 5.00E+00

8. 10E+00 1.50E+01 I

TM TM TM L14638-02 L14638-02 L14638-02 11/19/2008 11/19/2008 11/19/2008 Be-7 Ce-I141 Ce-144 3.OOE+00 6.00E-01

-1.98E+01 1.40E+01 2.90E+00 9.50E+00 4.80E+01 9.80E+00 3.40E+01 I

TM L14638-02 11/19/2008 Co-57 -1.80E+00 1.20E+00 4.20E+00 TM TM TM L14638-02 L14638-02 L14638-02 11/19/2008 11/19/2008 11/19/2008 Co-58 Co-60 Cr-51 2.10E+00 1.50E+00

-7.OOE+00 1.90E+00 1.90E+00 1.60E+01 6.40E+00 6.50E+00 5.80E+0 I I

TM TM TM L14638-02 L14638-02 L14638-02 11/19/2008 11/19/2008 11/19/2008 Cs-134 Cs-137 Fe-59 8.OOE-01

-1.00E-01

-2.40E+00 1.60E+00 1.70E+00 4.50E+00 6.90E+00 6.20E+00 1.60E+01 I

TM L14638-02 11/19/2008 1-131 -8.OOE-02 1.30E-01 7.50E-01 TM TM TM L14638-02 L14638-02 L14638-02 11/19/2008 11/19/2008 11/19/2008 1-131 K-40 La- 140 7.OOE-01 1.54E+03

-2.40E+00 4.70E+00 6.70E+01 3.80E+00 1.60E+01 9.40E+01 1.50E+01 *I I

TM TM TM L14638-02 L14638-02 L14638-02 11/19/2008 11/19/2008 11/19/2008 Mn-54 Nb-95 Ru-103

-4.90E+00

-7.OOE-01

-2.30E+00 1.80E+00 2.30E+00

2. 10E+00

7. 1OE+00 8.20E+00 7.80E+00 I

TM L14638-02 11/19/2008 Ru-106 -3.OOE+00 1.60E+01 5.70E+01 TM TM TM L14638-02 L14638-02 L14638-02 11/19/2008 11/19/2008 11/19/2008 Sb-124 Sb-125 Se-75

-6.20E+00 0.OOE+00

-2.90E+00 4.10E+00 4.20E+00 2.20E+00 1.70E+01 1.50E+01 7.90E+00 I

TM TM TM L14638-02 L14638-02 L14726-02 11/19/2008 11/19/2008 12/18/2008 Zn-65 Zr-95 AcTh-228 6.60E+00 1.00E+00 0.OOE+00 6.20E+00 3.30E+00 8.40E+00 2.OOE+01 1.20E+01 3.OOE+01 I

TM L14726-02 12/18/2008 Ag-108m 0.OOE+00 1.70E+00 6.1OE+00 TM TM TM L14726-02 L14726-02 L14726-02 12/18/2008 12/18/2008 12/18/2008 Ag-1 IOm Ba-140 Be-7

-1.70E+00 7.OOE-01 5.OOE+00 3.30E+00 4.OOE+00 1.80E+01 1.20E+01 1.50E+01 6.20E+01 I

TM TM TM L14726-02 L14726-02 L14726-02 12/18/2008 12/18/2008 12/18/2008 Ce- 141 Ce-144 Co-57

-7.OOE-01

-2.20E+01 1.501E+00 2.60E+00 1.101E+0 1 1.50E+00 9.20E+00 4.10E+01 4.90E+00 I

TM L14726-02 12/18/2008 Co-58 0.00E+00 2.30E+00 8.40E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

182 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 15 L14726-02 12/18/2008 Co-60 3.OOE-01 2.30E+00 8.50E+00 TM 15 L14726-02 12/18/2008 Cr-51 -9.00E+00 2.OOE+01 7.OOE+01 TM 15 L14726-02 12/18/2008 Cs-134 6.OOE-01 1.60E+00 8.OOE+00 TM 15 L14726-02 12/18/2008 Cs-137 -2.OOE-01 2.20E+00 7.80E+00 TM 15 L14726-02 12/18/2008 Fe-59 4.90E+00 5.20E+00 1.80E+01 TM 15 L14726-02 12/18/2008 1-131 -1.79E-01 2.80E-02 8.70E-01 TM 15 L14726-02 12/18/2008 1-131 -3.90E+00 4.90E+00 1.80E+01 TM 15 L14726-02 12/18/2008 K-40 1.52E+03 7.70E+01 1.10E+02 TM 15 L14726-02 12/18/2008 La-140 7.OOE-01 4.OOE+00 1.50E+01 TM 15 L14726-02 12/18/2008 Mn-54 0.OOE+00 2.40E+00 8.40E+00 TM 15 L14726-02 12/18/2008 Nb-95 -2.70E+00 4.30E+00 1.50E+01 TM 15 L14726-02 12/18/2008 Ru-103 -2.OOE-01 2.70E+00 9.60E+00 TM 15 L14726-02 12/18/2008 Ru-106 -4.OOE+00 I 90E+01 6.90E+01 TM 15 L14726-02 12/18/2008 Sb-124 7.20E+00 4.60E+00 1.50E+01 TM 15 L14726-02 12/18/2008 Sb-125 8.50E+00 5.50E+00 1.80E+01 TM 15 L14726-02 12/18/2008 Se-75 7.OOE-01 2.50E+00 8.70E+00 TM 15 L14726-02 12/18/2008 Zn-65 -I.00E+00 1.00E+01 3.60E+01 TM 15 L14726-02 12/18/2008 Zr-95 -6.OOE+00 4.30E+00 1.60E+01 TM 20 L13502-03 1/16/2008 AcTh-228 5.OOE+00 1.00E+01 3.50E+01 TM 20 L13502-03 1/16/2008 Ag-108m -3.1 OE+00 1.80E+00 7.OOE+00 TM 20 L13502-03 1/16/2008 Ag-1I Om 1.60E+00 3.20E+00 1.20E+01 TM 20 L13502-03 1/16/2008 Ba-140 -2.OOE+00 3.50E+00 1.50E+01 TM 20 L13502-03 1/16/2008 Be-7 -4.OOE+00 1.70E+01 6.40E+01 TM 20 L13502-03 1/16/2008 Ce-141 3.30E+00 3.20E+00 1.1OE+01 TM 20 L13502-03 1/16/2008 Ce-144 1.30E+01 I.IOE+01 3.60E+01 TM 20 L13502-03 1/16/2008 Co-57 -I.00E-01 1.40E+00 4.90E+00 TM 20 L13502-03 1/16/2008 Co-58 4.OOE-01 2.70E+00 9.70E+00 TM 20 L13502-03 1/16/2008 Co-60 -4.60E+00 2.80E+00 1.20E+01 TM 20 L13502-03 1/16/2008 Cr-51 -1.00E+00 1.90E+01 6.70E+01 TM 20 L13502-03 1/16/2008 Cs-134 -3.40E+00 3.OOE+00 1.20E+01 TM 20 L13502-03 1/16/2008 Cs-137 3.80E+00 2.20E+00 7.20E+00 TM 20 L13502-03 1/16/2008 Fe-59 1.70E+00 6.1OE+00 2.20E+0I TM 20 L13502-03 1/16/2008 1-131 2.10E-01 2.40E-01 9.30E-01 TM 20 L13502-03 1/16/2008 1-131 8.OOE-01 3.60E+00 1.30E+01 TM 20 L13502-03 1/16/2008 K-40 1.19E+03 8.90E+01 1.60E+02 TM 20 L13502-03 1/16/2008 La-140 -2.OOE+00 3.50E+00 1.50E+01 TM 20 L13502-03 1/16/2008 Mn-54 -3. 1OE+00 2.50E+00 9.70E+00 TM 20 L13502-03 1/16/2008 Nb-95 3.60E+00 2.70E+00 8.90E+00 TM 20 L13502-03 1/16/2008 Ru-103 -4.OOE+00 2.60E+00 9.90E+00 TM 20 L13502-03 1/16/2008 Ru-106 8.OOE+00 1.90E+0I 6.80E+01 TM 20 L13502-03 1/16/2008 Sb-124 1.39E+01 6.50E+00 2.OOE+01 TM 20 L13502-03 1/16/2008 Sb-125 -1.20E+00 6.OOE+00 2.20E+01 TM 20 L13502-03 1/16/2008 Se-75 0.OOE+00 2.50E+00 8.70E+00 TM 20 L13502-03 1/16/2008 Zn-65 -1.70E+00 6.30E+00 2.40E+0 I TM 20 L13502-03 1/16/2008 Zr-95 1.60E+00 4.90E+00 1.80E+01 TM 20 L13608-03 2/13/2008 AcTh-228 -4.40E+00 6.90E+00 2.60E+0I TM 20 L13608-03 2/13/2008 Ag-108m 1.1OE+00 1.80E+00 6.30E+00 TM 20 L13608-03 2/13/2008 Ag-I 10m -3.OOE+00 2.90E+00 1.1OE+01 TM 20 L13608-03 2/13/2008 Ba-140 -5.OOE+00 3.30E+00 1.40E+0I TM 20 L13608-03 2/13/2008 Be-7 3.20E+01 1.60E+01 5.20E+0I TM 20 L13608-03 2/13/2008 Ce-141 8.10E+00 2.90E+00 9.OOE+00 TM 20 L13608-03 2/13/2008 Ce-144 -2.OOE+00 1.20E+01 4.1OE+0I TM 20 L13608-03 2/13/2008 Co-57 -I.00E-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 183

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I TM 20 L13608-03 2/13/2008 Co-58 -1.40E+00 2. 1OE+00 8.OOE+00 TM 20 L13608-03 2/13/2008 Co-60 4.OOE-01 2.OOE+00 7.50E+00 TM 20 LI13608-03 2/13/2008 Cr-51 1.10E+01 1.80E+01 6.20E+0 I TM 20 L13608-03 2/13/2008 Cs-134 -7.OOE-01 1.60E+00 7.80E+00 TM TM TM 20 20 20 L13608-03 L13608-03 L13608-03 2/13/2008 2/13/2008 2/13/2008 Cs-137 Fe-59 1-131

-1.50E+00 2.70E+00 2.70E+00 2.40E+00 4.80E+00 3.90E+00 8.80E+00 1.70E+01 1.30E+01 I

TM 20 L 13608-03 2/13/2008 1-131 -8.OOE-02 1.30E-01 9.OOE-01 TM 20 L13608-03 2/13/2008 K-40 1.20E+03 7.30E+01 1.1 OE+02 TM 20 L13608-03 2/13/2008 La-140 -5.OOE+00 3.30E+00 1.40E+01 TM 20 L13608-03 2/13/2008 Mn-54 3.OOE-01 1.90E+00 6.80E+00 TM TM TM 20 20 20 L13608-03 L13608-03 L13608-03 2/13/2008 2/13/2008 2/13/2008 Nb-95 Ru-103 Ru-106

2. 1OE+00

-2.OOE+00 9.OOE+00 2.50E+00 1.90E+00 1.70E+01 8.40E+00 7.30E+00 6.10E+01 I

TM 20 L13608-03 2/13/2008 Sb-124 0.OOE+00 4.80E+00 1.80E+01 TM TM TM 20 20 20 L13608-03 L 13608-03 LI13608-03 2/13/2008 2/13/2008 2/13/2008 Sb-125 Se-75 Zn-65

-2.90E+00 1.50E+00

-7.20E+00 5.1OE+00 2.20E+00 5.40E+00 1.90E+01 7.50E+00 2.1OE+01 I

TM 20 L13608-03 2/13/2008 Zr-95 5.OOE-01 3.1OE+00 1.IOE+01 TM TM 20 20 L13691-03 L13691-03 3/11/2008 3/11/2008 AcTh-228 Ag-108m 3.1OE+00

-2.OOE-01 7.10E+00 1.50E+00 2.50E+01 5.30E+00 TM 20 L13691-03 3/11/2008 Ag-I11i 6.OOE-01 2.60E+00 9.OOE+00 TM TM TM 20 20 20 L13691-03 L1-3691-03 L13691-03 3/11/2008 3/11/2008 3/11/2008 Ba-140 Be-7 Ce-141

-7.OOE-01

-4.OOE+00 3.30E+00 3.OOE+00 1.60E+0I 2.70E+00 1.20E+01 5.50E+01 8.90E+00 I

TM 20 L13691-03 3/11/2008 Ce-144 -1.67E+01 9.50E+00 3.40E+01 TM TM 20 20 L13691-03 L13691-03 3/11/2008 3/11/2008 Co-57 Co-58

-9.OOE-01 4.00E-01 1.30E+00 1.70E+00 4.50E+00 6.OOE+00 I

TM 20 L13691-03 3/11/2008 Co-60 -1.1OE+00 2.20E+00 8.30E+00 TM TM TM 20 20 20 L13691-03 L13691-03 L13691-03 3/11/2008 3/11/2008 3/11/2008 Cr-51 Cs-134 Cs-137

-1.10E+01 1.30E+00 3.40E+00 1.70E+01 1.20E+00 1.90E+00 6.20E+0 I 5.30E+00 6.30E+00 I

TM 20 L13691-03 3/11/2008 Fe-59 2.40E+00 4.40E+00 1.50E+01 TM 20 L13691-03 3/11/2008 1-131 1.90E+00 3.70E+00 1.30E+01 TM 20 L13691-03 3/11/2008 1-131 1.00E-02 1.20E-01 7.10E-01 TM TM TM 20 20 20 L13691-03 L13691-03 L13691-03 3/11/2008 3/11/2008 3/11/2008 K-40 La-140 Mn-54 1.19E+03

-7.OOE-01 1.00E+00 6.10E+01 3.OOE+00 1.80E+00 7.90E+0 I 1.20E+01

6. 1OE+00 i

TM TM 20 20 L13691-03 L13691-03 3/11/2008 3/11/2008 3/11/2008 Nb-95 Ru-103

-3.OOE-01 5.OOE-01 2.OOE+00 2.40E+00 1.80E+00 1.60E+01 8.40E+00 6.20E+00 5.50E+0 I I

TM 20 L13691-03 Ru-106 TM TM TM 20 20 20 L13691-03 L13691-03 L13691-03 3/11/2008 3/11/2008 3/11/2008 Sb-124 Sb-125 Se-75

-1.70E+00 6.40E+00

-1.101E+00 3.90E+00 5.OOE+00 2.OOE+00 1.60E+01 1.70E+01 7.OOE+00 I

TM 20 L13691-03 3/11/2008 Zn-65 -4.50E+00 4.70E+00 1.70E+01 TM TM 20 20 L13691-03 L13804-03 3/11/2008 4/9/2008 Zr-95 AcTh-228

-3.90E+00

-1.44E+01 0.OOE+00 3.10E+00 7.60E+00 1.60E+00 1.20E+01 3.10E+01 5.80E+00 I

TM 20 L13804-03 4/9/2008 Ag-108m TM TM TM 20 20 20 L13804-03 L13804-03 L13804-03 4/9/2008 4/9/2008 4/9/2008 Ag-ll0m Ba-140 Be-7 3.OOE+00 3.40E+00

-1.00E+01 2.40E+00 3.60E+00 1.60E+01 8.20E+00 1.30E+01 6.OOE+01 I

TM 20 L13804-03 4/9/2008 Ce- 141 2.60E+00 2.90E+00 9.90E+00 TM 20 L13804-03 4/9/2008 Ce- 144 -1.00E+00 1.10E+01 3.90E+01 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 184 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 20 L13804-03 4/9/2008 Co-57 -3.70E+00 1.50E+00 5.50E+00 TM 20 L13804-03 4/9/2008 Co-58 -8.OOE-01 2.1OE+00 7.90E+00 TM 20 L13804-03 4/9/2008 Co-60 4.00E-01 2.OOE+00 7.60E+00 TM 20 L13804-03 4/9/2008 Cr-51 3.70E+01 1.80E+01 5.60E+01 TM 20 L13804-03 4/9/2008 Cs-134 1.00E-01 1.40E+00 6.20E+00 TM 20 L13804-03 4/9/2008 Cs-137 1.30E+00 1.90E+00 6.50E+00 TM 20 L13804-03 4/9/2008 Fe-59 6.90E+00 4.50E+00 1.50E+01 TM 20 L13804-03 4/9/2008 1-131 2.OOE-02 1.50E-01 8.90E-01 TM 20 L13804-03 4/9/2008 1-131 -5.101E+00 4.00E+00 1.50E+01 TM 20 L13804-03 4/9/2008 K-40 1.28E+03 7.50E+01 1.IOE+02 TM 20 L13804-03 4/9/2008 La-140 3.40E+00 3.60E+00 1.30E+01 TM 20 L13804-03 4/9/2008 Mn-54 1.80E+00 2.1OE+00 7.20E+00 TM 20 L13804-03 4/9/2008 Nb-95 -4.40E+00 2.40E+00 9.60E+00 TM 20 L13804-03 4/9/2008 Ru-103 -3.80E+00 1.90E+00 7.70E+00 TM 20 L13804-03 4/9/2008 Ru-106 -4.OOE+01 2.OOE+01 7.80E+01 TM 20 L13804-03 4/9/2008 Sb-124 -5.OOE+00 4.40E+00 1.90E+01 TM 20 L13804-03 4/9/2008 Sb-125 -1.10E+00 5.40E+00 1.90E+01 TM 20 L13804-03 4/9/2008 Se-75 -1.30E+00 2.30E+00 8.30E+00 TM 20 L13804-03 4/9/2008 Zn-65 -5.20E+00 4.60E+00 1.80E+01 TM 20 L13804-03 4/9/2008 Zr-95 -5.1 OE+00 3.1OE+00 1.30E+01 TM 20 L13845-03 4/23/2008 AcTh-228 8.20E+00 7.70E+00 2.60E+01 TM 20 L13845-03 4/23/2008 Ag-108m 0.OOE+00 1.70E+00 6.1OE+00 TM 20 L13845-03 4/23/2008 Ag-110m 2.40E+00 3.OOE+00 1.00E+01 TM 20 L13845-03 4/23/2008 Ba-140 6.90E+00 3.1OE+00 9.10E+00 TM 20 L13845-03 4/23/2008 Be-7 0.OOE+00 1.80E+01 6.50E+01 TM 20 L13845-03 4/23/2008 Ce-141 -2.50E+00 2.90E+00 1.00E+01 TM 20 L13845-03 4/23/2008 Ce-144 5.OOE+00 1.10E+01 3.80E+01 TM 20 L13845-03 4/23/2008 Co-57 -1.10E+00 1.30E+00 4.80E+00 TM 20 L13845-03 4/23/2008 Co-58 1.1OE+00 2.30E+00 8.10E+00 TM 20 L13845-03 4/23/2008 Co-60 1.90E+00 2.20E+00 7.80E+00 TM 20 L13845-03 4/23/2008 Cr-51 -1.40E+01 1.80E+01 6.50E+01 TM 20 L13845-03 4/23/2008 Cs-134 -1.70E+00 1.50E+00 7.50E+00 TM 20 L13845-03 4/23/2008 Cs-137 3.40E+00 2.1OE+00 7.OOE+00 TM 20 L13845-03 4/23/2008 Fe-59 4.70E+00 5.30E+00 1.80E+01 TM 20 L13845-03 4/23/2008 1-131 -1.53E-01 2.80E-02 9.80E-01 TM 20 L13845-03 4/23/2008 1-131 -2.OOE-01 4.OOE+00 1.40E+01 TM 20 L13845-03 4/23/2008 K-40 1.34E+03 7.90E+01 1.1OE+02 TM 20 L13845-03 4/23/2008 La-140 6.90E+00 3.1OE+00 9.1OE+00 TM 20 L13845-03 4/23/2008 Mn-54 -1.40E+00 2.00E+00 7.60E+00 TM 20 L13845-03 4/23/2008 Nb-95 -4.20E+00 2. 101E+00 8.70E+00 TM 20 L13845-03 4/23/2008 Ru-103 7.00E-01 1.90E+00 6.90E+00 TM 20 L13845-03 4/23/2008 Ru-106 1.10E+01 1.90E+01 6.60E+01 TM 20 L13845-03 4/23/2008 Sb-124 -4.1 OE+00 4.50E+00 1.90E+01 TM 20 L13845-03 4/23/2008 Sb-125 -4.OOE+00 5.60E+00 2.10E+01 TM 20 L13845-03 4/23/2008 Se-75 2.OOE+00 2.20E+00 7.40E+00 TM 20 L13845-03 4/23/2008 Zn-65 5.30E+00 4.70E+00 1.60E+01 TM 20 L13845-03 4/23/2008 Zr-95 0.OOE+00 3.OOE+00 1.10E+01 TM 20 L13909-03 5/7/2008 AcTh-228 7.40E+00 9.30E+00 3.20E+01 TM 20 L13909-03 5/7/2008 Ag-108m 1.40E+00 1.50E+00 5.20E+00 TM 20 L13909-03 5/7/2008 Ag-110m 4.30E+00 2.70E+00 8.90E+00 TM 20 L13909-03 5/7/2008 Ba-140 -7.00E-01 3.80E+00 1.501E+01 TM 20 LI13909-03 5/7/2008 Be-7 -1.90E+0I 1.60E+01 5.90E+01 TM 20 L13909-03 5/7/2008 Ce-141 1.50E+00 2.60E+00 8.80E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 185

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I TM TM 20 20 L13909-03 L13909-03 5/7/2008 5/7/2008 Ce-144 Co-57 3.60E+00

-7.00E-01 8.90E+00 1.20E+00 3.00E+01 4.20E+00 I

TM 20 L13909-03 5/7/2008 Co-58 1.70E+00 1.90E+00 6.60E+00 TM TM 20 20 L13909-03 L13909-03 5/7/2008 5/7/2008 Co-60 Cr-51 1.90E+00

-1.30E+01 2.40E+00 1.80E+01 8.30E+00 6.30E+01 6.20E+00 I

TM 20 L13909-03 5/7/2008 Cs-134 1.80E+00 1.60E+00 TM TM TM 20 20 20 L13909-03 L13909-03 L13909-03 5/7/2008 5/7/2008 5/7/2008 Cs-137 Fe-59 1-131 4.60E+00

-8.20E+00 0.00E+00 2.101E+00 4.60E+00 3.30E+00 6.70E+00 1.80E+01 1.20E+01 i

TM 20 L13909-03 5/7/2008 1-131 1.90E-01 1.70E-01 6.10E-01 TM TM 20 20 L13909-03 L13909-03 5/7/2008 5/7/2008 K-40 La-140 1.37E+03

-7.00E-01 7.90E+01 3.80E+00 2.00E+00 1.101E+02 1.50E+01 7.90E+00 I

TM 20 L13909-03 5/7/2008 Mn-54 -2.70E+00 TM 20 L13909-03 5/7/2008 Nb-95 2.OOE-01 2. 101E+00 7.70E+00 TM 20 L13909-03 5/7/2008 Ru-103 -2.40E+00 1.80E+00 7.00E+00 TM TM TM 20 20 20 L13909-03 L13909-03 L13909-03 5/7/2008 5/7/2008 5/7/2008 Ru-106 Sb-124 Sb-125

-6.00E+00

-5.20E+00

-1.80E+00 1.80E+01 4.90E+00 4.50E+00 6.60E+01 2.1OE+OI 1.60E+01 i

TM 20 L13909-03 5/7/2008 Se-75 1.30E+00 2.00E+00 6.70E+00 TM 20 L13909-03 5/7/2008 Zn-65 -7.00E+00 4.70E+00 1.90E+01 TM 20 L13909-03 5/7/2008 Zr-95 1.50E+00 3.50E+00 1.20E+01 TM 20 L13956-03 5/21/2008 AcTh-228 7.50E+00 7.70E+00 2.60E+0 1 TM TM TM 20 20 20 L13956-03 L13956-03 L13956-03 5/21/2008 5/21/2008 5/21/2008 Ag-108m Ag-110m Ba-140 3.00E-01 1.80E+00

-7.00E-01 1.60E+00 2.50E+00 3.30E+00 5.80E+00 8.90E+00 1.30E+01 I

L13956-03 1.20E+01 1.50E+01 5.10E+01 TM TM TM 20 20 20 L13956-03 L13956-03 5/21/2008 5/21/2008 5/21/2008 Be-7 Ce-141 Ce-144 2.OOE+00 1.50E+01 3.40E+00 1.10E+01 1.20E+01 3.60E+01 I

TM 20 L13956-03 5/21/2008 Co-57 -1.50E+00 1.40E+00 4.90E+00 TM TM TM 20 20 20 L13956-03 L13956-03 L13956-03 5/21/2008 5/21/2008 5/21/2008 Co-58 Co-60 Cr-51

-4.40E+00 7.00E-01 3.20E+01 1.90E+00 2.40E+00 1.70E+01 8.00E+00 8.80E+00 5.50E+01 I

TM TM TM 20 20 20 L13956-03 L13956-03 L13956-03 5/21/2008 5/21/2008 5/21/2008 Cs-134 Cs-137 Fe-59 2.80E+00 2.30E+00 1.70E+00 1.70E+00 2.20E+00 4.90E+00 7.50E+00 7.40E+00 1.70E+01 1

TM 20 L13956-03 5/21/2008 1-131 -4.30E+00 3.90E+00 1.40E+01 TM 20 L13956-03 5/21/2008 1-131 -8.00E-02 1.20E-02 9. 101E-01 TM 20 L13956-03 5/21/2008 K-40 1.25E+03 7.20E+01 1.00E+02 TM 20 L13956-03 5/21/2008 La- 140 -7.00E-01 3.30E+00 1.30E+01 TM 20 L13956-03 5/21/2008 -1.70E+00 1.90E+00 7.40E+00 I

Mn-54 TM 20 L13956-03 5/21/2008 Nb-95 2.30E+00 2.50E+00 8.40E+00 TM 20 L13956-03 5/21/2008 Ru-103 -4.00E-01 2.20E+00 7.70E+00 TM 20 L13956-03 5/21/2008 Ru-106 -3.40E+01 1.70E+01 6.80E+01 TM TM TM 20 20 20 L13956-03 L13956-03 L13956-03 5/21/2008 5/21/2008 5/21/2008 Sb-124 Sb-125 Se-75

-1.90E+00 1.00E+00

-2.40E+00 4.60E+00 4.80E+00 2.40E+00 1.80E+01 1.70E+01 8.80E+00 I

TM TM TM 20 20 20 L13956-03 L13956-03 L14012-03 5/21/2008 5/21/2008 6/5/2008 Zn-65 Zr-95 AcTh-228

-8.60E+00 5.90E+00

-1.40E+00 4.80E+00 3.60E+00 6.60E+00 1.90E+01 1.20E+01 2.30E+01

,I TM 20 L14012-03 6/5/2008 Ag-108m -1.00E-01 1.101E+00 4.00E+00 TM TM TM 20 20 20 L14012-03 L14012-03 L14012-03 6/5/2008 6/5/2008 6/5/2008 Ag-110m Ba-140 Be-7

-4.00E-01 2.00E+00

-5.00E+00 2.00E+00 3.20E+00 1.30E+01 7.20E+00 1.10E+01 4.80E+01 i

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement i

186

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 20 L14012-03 6/5/2008 Ce-141 2.1OE+00 2.40E+00 7.90E+00 TM 20 L14012-03 6/5/2008 Ce-144 3.60E+00 8.70E+00 3.OOE+01 TM 20 L14012-03 6/5/2008 Co-57 -1.00E-01 1.IOE+00 3.70E+00 TM 20 L14012-03 6/5/2008 Co-58 -1.60E+00 1.60E+00 5.90E+00 TM 20 L14012-03 6/5/2008 Co-60 9.OOE-01 1.60E+00 5.70E+00 TM 20 L14012-03 6/5/2008 Cr-51 7.OOE+00 1.50E+01 5.OOE+01 TM 20 L14012-03 6/5/2008 Cs-134 2.OOE-01 1.30E+00 5.90E+00 TM 20 L14012-03 6/5/2008 Cs-137 1.60E+00 1.60E+00 5.40E+00 TM 20 L14012-03 6/5/2008 Fe-59 1.40E+00 3.60E+00 1.30E+01 TM 20 L14012-03 6/5/2008 1-131 -2.1 OE+00 3.80E+00 1.40E+01 TM 20 L14012-03 6/5/2008 1-131 -4.OOE-02 1.50E-01 9.50E-01 TM 20 L14012-03 6/5/2008 K-40 1.36E+03 5.80E+01 8.00E+01 TM 20 L14012-03 6/5/2008 La-140 2.OOE+00 3.20E+00 1.10E+01 TM 20 L14012-03 6/5/2008 Mn-54 6.OOE-01 1.60E+00 5.70E+00 TM 20 L14012-03 6/5/2008 Nb-95 1.60E+00 1.90E+00 6.30E+00 TM 20 L14012-03 6/5/2008 Ru-103' -6.OOE-01 1.40E+00 5.20E+00 TM 20 L14012-03 6/5/2008 Ru-106 -9.OOE+00 1.40E+01 5.1OE+01 TM 20 L14012-03 6/5/2008 Sb-124 5.OOE-01 3.20E+00 1.20E+01 TM 20 L14012-03 6/5/2008 Sb-125 4.70E+00 3.90E+00 1.30E+01 TM 20 L14012-03 6/5/2008 Se-75 -3.20E+00 1.90E+00 6.70E+00 TM 20 L14012-03 6/5/2008 Zn-65 -3.40E+00 3.90E+00 1.40E+01 TM 20 L14012-03 6/5/2008 Zr-95 0.OOE+00 2.60E+00 9.40E+00 TM 20 L14053-03 6/18/2008 AcTh-228 2.OOE-01 6.40E+00 2.20E+01 TM 20 L14053-03 6/18/2008 Ag-108m 0.OOE+00 1.00E+00 3.50E+00 TM 20 L14053-03 6/18/2008 Ag-1 10m 2.50E+00 1.70E+00 5.60E+00 TM 20 L14053-03 6/18/2008 Ba-140 -2.80E+00 3.IOE+00 1.20E+01 TM 20 L14053-03 6/18/2008 Be-7 -I.37E+01 9.90E+00 3.60E+01 TM 20 L14053-03 6/18/2008 Ce-141 2.20E+00 3.60E+00 1.20E+01 TM 20 L14053-03 6/18/2008 Ce-144 1.17E+01 6.80E+00 2.20E+01 TM 20 L14053-03 6/18/2008 Co-57 6.50E-0 I 8.50E-01 2.90E+00 TM 20 L14053-03 6/18/2008 Co-58 -2.50E+00 1.20E+00 4.70E+00 TM 20 L14053-03 6/18/2008 Co-60 2.40E+00 1.40E+00 4.50E+00 TM 20 L14053-03 6/18/2008 Cr-51 -1.60E+01 1.30E+01 4.50E+01 TM 20 L14053-03 6/18/2008 Cs-134 7.00E-01 9.10E-01 4.30E+00 TM 20 L14053-03 6/18/2008 Cs-137 6.OOE-01 1.20E+00 4. 10E+00 TM 20 L14053-03 6/18/2008 Fe-59 1.50E+00 3.50E+00 1.20E+01 TM 20 L14053-03 6/18/2008 1-131 3.80E+00 3.90E+00 1.30E+01 TM 20 L14053-03 6/18/2008 1-131 6.OOE-02 1.80E-01 9.50E-01 TM 20 L14053-03 6/18/2008 K-40 1.26E+03 4.60E+01 7.40E+01 TM 20 L14053-03 6/18/2008 La-140 -2.80E+00 3.1OE+00 1.20E+01 TM 20 L14053-03 6/18/2008 Mn-54 -5.OOE-01 1.20E+00 4.40E+00 TM 20 L14053-03 6/18/2008 Nb-95 9.OOE-01 1.30E+00 4.40E+00 TM 20 L14053-03 6/18/2008 Ru-103 1.40E+00 1.50E+00 5.OOE+00 TM 20 L14053-03 6/18/2008 Ru-106 4.OOE+00 1.10E+01 3.90E+01 TM 20 L14053-03 6/18/2008 Sb-124 -2.60E+00 2.70E+00 1.00E+01 TM 20 L14053-03 6/18/2008 Sb-125 5.80E+00 3.OOE+00 9.90E+00 TM 20 L14053-03 6/18/2008 Se-75 -1.40E+00 1.50E+00 5.30E+00 TM 20 L14053-03 6/18/2008 Zn-65 1.04E+01 5.90E+00 1.90E+01 TM 20 L14053-03 6/18/2008 Zr-95 0.OOE+00 2.30E+00 8.OOE+00 TM 20 L14109-03 7/2/2008 AcTh-228 -1.30E+00 6.70E+00 2.40E+01 TM 20 L14109-03 7/2/2008 Ag-i08m -2.OOE-01 1.30E+00 4.60E+00 TM 20 L14109-03 7/2/2008 Ag-1I Om -1.10E+00 2.20E+00 8.IOE+00 TM 20 L14109-03 7/2/2008 Ba-140 0.OOE+00 3.20E+00 1.20E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 187

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TM TM TM 20 20 20 L14109-03 L14109-03 L14109-03 7/2/2008 7/2/2008 7/2/2008 Be-7 Ce-141 Ce-144

-1.00E+01

-2.40E+00

-1.72E+01 1.30E+01 2.40E+00 8.60E+00 4.60E+0 1 8.50E+00 3.1 OE+0 I U

TM 20 L14109-03 7/2/2008 Co-57 0.OOE+00 1.20E+00 4. 10E+00 TM TM TM 20 20 20 L14109-03 L14109-03 L14109-03 7/2/2008 7/2/2008 7/2/2008 Co-58 Co-60 Cr-51 7.OOE-01 1.50E+00

-6.OOE+00 1.60E+00 1.70E+00 1.60E+01 5.60E+00 5.90E+00 5.50E+01 I

TM TM TM 20 20 20 L14109-03 L14109-03 L14109-03 7/2/2008 7/2/2008 7/2/2008 Cs-134 Cs-137 Fe-59

-2.OOE-01 1.00E-01

-1.50E+00 1.20E+00 1.60E+00 3.70E+00 5.70E+00 5.50E+00 1.40E+01 I

TM 20 L14109-03 7/2/2008 1-131 -2.OOE-02 1.50E-01 9.20E-01 TM TM TM 20 20 20 L14109-03 LI14109-03 L14109-03 7/2/2008 7/2/2008 7/2/2008 1-131 K-40 La- 140 8.OOE-01 1.30E+03 0.OOE+00 4.20E+00 5.80E+01 3.20E+00 1.50E+01 8.1OE+OI 1.20E+01

I I

TM 20 L14109-03 7/2/2008 Mn-54 -3.OOE-01 1.60E+00 5.80E+00 TM 20 L14109-03 7/2/2008 Nb-95 -3.30E+00 2.1OE+00 8.OOE+00 TM 20 L14109-03 7/2/2008 Ru-103 -2.OOE-01 1.80E+00 6.20E+00 TM 20 L14109-03 7/2/2008 Ru- 106 2.OOE+01 1.40E+01 4.60E+01 TM TM TM 20 20 20 L14109-03 L14109-03 L14109-03 7/2/2008 7/2/2008 7/2/2008 Sb-124 Sb-125 Se-75 1.20E+00

-3.70E+00

-6.OOE-01 3.10E+00 4.OOE+00 1.90E+00 1.1 OE+0 1 1.50E+01 6.50E+00 I

TM TM TM 20 20 20 L14109-03 L14109-03 L14162-03 7/2/2008 7/2/2008 7/16/2008 Zn-65 Zr-95 AcTh-228

-1.17E+01 0.OOE+00 8.1OE+00 4.40E+00 2.90E+00 8.80E+00 1.70E+01 1.00E+01 3.OOE+01 I

TM 20 L14162-03 7/16/2008 Ag-108mn 1.60E+00 1.10E+00 3.60E+00 TM TM TM 20 20 20 L14162-03 L14162-03 L14162-03 7/16/2008 7/16/2008 7/16/2008 Ag-110m Ba-140 Be-7

-5.60E+00

-3. 1OE+00 1.00E+01 2.50E+00 3.60E+00 1.30E+01 9.50E+00 1.40E+01 4.40E+01 I

TM TM TM 20 20 20 L14162-03 L14162-03 L14162-03 7/16/2008 7/16/2008 7/16/2008 Ce-I141 Ce-144 Co-57 1.50E+00 2.40E+00 1.20E+00 2.20E+00 7.20E+00 1.20E+00 7.40E+00 2.40E+01 3.90E+00 I

TM 20 L14162-03 7/16/2008 Co-58 -4.OOE-01 1.60E+00 5.70E+00 TM TM TM 20 20 20 L14162-03 L14162-03 L14162-03 7/16/2008 7/16/2008 7/16/2008 Co-60 Cr-51 Cs-134 1.90E+00 2.40E+01

-2.OOE-01 1.80E+00 1.40E+01 1.1OE+00 6.1OE+00 4.40E+0I 5.30E+00 I

I TM 20 L14162-03 7/16/2008 Cs-137 -5.OOE-01 1.70E+00 5.90E+00 TM 20 L14162-03 7/16/2008 Fe-59 -1.10E+00 3.80E+00 1.40E+01 TM 20 L14162-03 7/16/2008 1-131 5.50E-01 2.80E-01 7.50E-01 TM 20 L14162-03 7/16/2008 1-131 -2.OOE-01 3.80E+00 1.30E+01 TM TM TM 20 20 20 L14162-03 L14162-03 L14162-03 7/16/2008 7/16/2008 7/16/2008 K-40 La-140 Mn-54 1.21 E+03

-3.1 OE+00 6.OOE-0 I 5.80E+01 3.60E+00 1.50E+00 9.50E+01 1.40E+01 5.20E+00 I

TM TM TM 20 20 20 L14162-03 L14162-03 L14162-03 7/16/2008 7/16/2008 7/16/2008 Nb-95 Ru-103 Ru-106 1.00E+00

-1.60E+00

-6.OOE+00 1.70E+00 1.60E+00 1.40E+01 5.70E+00 5.80E+00 5.00E+01 I

TM 20 L14162-03 7/16/2008 Sb-124 0.OOE+00 3.80E+00 1.40E+01 TM TM TM 20 20 20 L14162-03 L14162-03 L14162-03 7/16/2008 7/16/2008 7/16/2008 Sb-125 Se-75 Zn-65

-6.30E+00 7.OOE-01

-8.10E+00 3.40E+00 1.50E+00 3.90E+00 1.30E+01 5.1OE+00 1.50E+01 U

TM TM TM 20 20 20 L14162-03 L14269-03 L14269-03 7/16/2008 8/13/2008 8/13/2008 Zr-95 AcTh-228 Ag-1081n 3.10E+00

-7.OOE-01

-6.OOE-01 2.60E+00 8.50E+00 1.80E+00 8.90E+00 3.10E+01 6.50E+00 1

TM 20 L14269-03 8/13/2008 Ag-1 10m 0.OOE+00 2.90E+00 1.10E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

188 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 20 L14269-03 8/13/2008 Ba-140 -4.50E+00 3.20E+00 1.50E+01 TM 20 L14269-03 8/13/2008 Be-7 2.90E+01 I .80E+01 5.80E+01 TM 20 L14269-03 8/13/2008 Ce-141 -4.40E+00 3.40E+00 1.20E+01 TM 20 L14269-03 8/13/2008 Ce-144 1.00E+60 1.20E+01 4.l0E+01 TM 20 L14269-03 8/13/2008 Co-57 1.60E+00 1.60E+00 5.30E+00 TM 20 L14269-03 8/13/2008 Co-58 1.00E+00 2.OOE+00 7.20E+00 TM 20 L14269-03 8/13/2008 Co-60 -5.OOE-01 2.20E+00 8.50E+00 TM 20 LI14269-03 8/13/2008 Cr-51 3.20E+01 2.OOE+01 6.40E+01 TM 20 L14269-03 8/13/2008 Cs-134 -1.80E+00 1.60E+00 8.1OE+00 TM 20 L14269-03 8/13/2008 Cs-137 9.OOE-01 1.90E+00 7.OOE+00 TM 20 L14269-03 8/13/2008 Fe-59 5.OOE+00 5.OOE+00 1.70E+01 TM 20 L14269-03 8/13/2008 1-131 3.80E-01 2.90E-01 9.40E-01 TM 20 L14269-03 8/13/2008 1-131 -5.1 OE+00 4.OOE+00 1.50E+01 TM 20 L14269-03 8/13/2008 K-40 1.29E+03 8.40E+01 1.20E+02 TM 20 L14269-03 8/13/2008 La-140 -4.50E+00 3.20E+00 1.50E+01 TM 20 LI14269-03 8/13/2008 Mn-54 2.60E+00 2.20E+00 7.60E+00 TM 20 L14269-03 8/13/2008 Nb-95 -2.OOE-01 2.70E+00 1.00E+01 TM 20 L14269-03 8/13/2008 Ru-103 0.OOE+00 2.40E+00 8.70E+00 TM 20 LI14269-03 8/13/2008 Ru-106 -1.00E+00 2.20E+01 7.80E+01 TM 20 L14269-03 8/13/2008 Sb- 124 2.50E+00 4.90E+00 1.80E+01 TM 20 L14269-03 8/13/2008 Sb-125 3.90E+00 5.50E+00 1.90E+01 TM 20 L14269-03 8/13/2008 Se-75 -2. 1OE+00 2.70E+00 9.80E+00 TM 20 LI14269-03 8/13/2008 Zn-65 -2.80E+00 5.30E+00 2.OOE+01 TM 20 L14269-03 8/13/2008 Zr-95 3.50E+00 3.80E+00 1.30E+01 TM 20 L14320-03 8/27/2008 AcTh-228 1.92E+01 9.1OE+00 2.80E+01 TM 20 L14320-03 8/27/2008 Ag-108m -1.00E+00 2.1OE+00 7.60E+00 TM 20 L14320-03 8/27/2008 Ag-110m -7.30E+00 2.90E+00 1.30E+01 TM 20 L14320-03 8/27/2008 Ba-140 2.30E+00 3.80E+00 1.40E+01 TM 20 L14320-03 8/27/2008 Be-7 5.OOE+00 1.70E+01 6.30E+01 TM 20 L14320-03 8/27/2008 Ce-141 6.OOE-01 3.50E+00 1.20E+01 TM 20 L14320-03 8/27/2008 Ce- 144 -2.1 0E+01 1.40E+01 5.1OE+01 TM 20 L14320-03 8/27/2008 Co-57 -2.30E+00 1.60E+00 6.OOE+00 TM 20 L14320-03 8/27/2008 Co-58 -2.60E+00 2.40E+00 9.60E+00 TM 20 L14320-03 8/27/2008 Co-60 5.OOE-01 2.90E+00 1.10E+01 TM 20 L14320-03 8/27/2008 Cr-51 -7.OOE+00 2. 1OE+01 7.50E+01 TM 20 L14320-03 8/27/2008 Cs-134 -2.OOE+00 1.60E+00 8.80E+00 TM 20 L14320-03 8/27/2008 Cs-137 3.50E+00 2.20E+00 7.20E+00 TM 20 L14320-03 8/27/2008 Fe-59 2. 101E+00 5.1 OE+00 1.80E+01 TM 20 L14320-03 8/27/2008 1-131 -9.OOE-02 1.70E-02 6.80E-01 TM 20 L14320-03 8/27/2008 1-131 3.40E+00 4.50E+00 1.60E+01 TM 20 L14320-03 8/27/2008 K-40 1.43E+03 9.10E+01 1.20E+02 TM 20 L14320-03 8/27/2008 La-140 2.30E+00 3.80E+00 1.40E+01 TM 20 L14320-03 8/27/2008 Mn-54 1.40E+00 2.1 OE+00 7.50E+00 TM 20 L14320-03 8/27/2008 Nb-95 -8.OOE-01 2.50E+00 9.40E+00 TM 20 L14320-03 8/27/2008 Ru-103 2.00E-01 2.1OE+00 7.90E+00 TM 20 L14320-03 8/27/2008 Ru-106 2.10E+01 2.40E+01 8. IOE+01 TM 20 L14320-03 8/27/2008 Sb-124 -4.OOE-01 3.50E+00 1.60E+01 TM 20 L14320-03 8/27/2008 Sb-125 -7.OOE+00 6.30E+00 2.40E+01 TM 20 L14320-03 8/27/2008 Se-75 -5.60E+00 2.60E+00 1.00E+01 TM 20 L14320-03 8/27/2008 Zn-65 6.OOE-01 6. 1OE+00 2.20E+01 TM 20 L14320-03 8/27/2008 Zr-95 -3.90E+00 4.OOE+00 1.60E+01 TM 20 L14365-03 9/10/2008 AcTh-228 -1.80E+00 8.70E+00 3.20E+01 TM 20 L14365-03 9/10/2008 Ag- 108m 2.OOE-01 1.80E+00 6.30E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 189

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TM TM TM 20 20 20 L14365-03 9/10/2008 L14365-03 9/10/2008 L14365-03 9/10/2008 Ag-1 10m Ba-140 Be-7 1.60E+00 4.80E+00

-3.10E+01 2.80E+00 3.1OE+00 1.70E+01 1.00E+01 1.00E+01 6.70E+01 U

20 LI4365-03 9/10/2008 Ce-141 1.1OE+00 2.70E+00 9.30E+00 I

TM TM 20 L14365-03 9/10/2008 Ce-144 -3.001E+00 1.10E+01 3.90E+01 TM 20 L14365-03 9/10/2008 Co-57 9.OOE-01 1.50E+00 5.20E+00 TM 20 L14365-03 9/10/2008 Co-58 -3.30E+00 1.90E+00 8.OOE+00 TM TM TM 20 20 20 L14365-03 9/10/2008 L14365-03 9/10/2008 L14365-03 9/10/2008 Co-60 Cr-51 Cs-134

-5.60E+00

-2.70E+01 3.OOE-01 2.30E+00 1.90E+01 1.40E+00 1.00E+01 7.OOE+01 6.90E+00 I

TM 20 L14365-03 9/10/2008 Cs-137 4.1OE+00 2.30E+00 7.40E+00 TM TM TM 20 20 20 L14365-03 9/10/2008 L14365-03 9/10/2008 L14365-03 9/10/2008 Fe-59 1-131 1-131

-7.70E+00 7.OOE-02 3.OOE+00 4.90E+00 1.80E-01 3.60E+00 2.OOE+01 9.20E-01 1.20E+01 I

I TM 20 L14365-03 9/10/2008 K-40 1.47E+03 8.OOE+01 8.60E+01 TM 20 L14365-03 9/10/2008 La-140 4.80E+00 3.1OE+00 1.00E+01 TM 20 L14365-03 9/10/2008 Mn-54 -2.30E+00 2.1OE+00 8. 1OE+00 TM 20 L14365-03 9/10/2008 Nb-95 1.50E+00 2.30E+00 8.20E+00 TM TM TM 20 20 20 L14365-03 9/10/2008 L14365-03 9/10/2008 L14365-03 9/10/2008 Ru-103 Ru-106 Sb-124 1.30E+00

-1.20E+01

- 1.90E+00 1.90E+00 1.70E+01 4.40E+00 6.80E+00 6.60E+01 1.80E+01 U

TM TM TM 20 20 20 L14365-03 9/10/2008 L14365-03 9/10/2008 L14365-03 9/10/2008 Sb-125 Se-75 Zn-65 6.00E+00

-I.20E+00 6.OOE+00 5.60E+00 2.40E+00 5.30E+00 1.90E+01 8.50E+00 1.80E+01 I

TM 20 L14365-03 9/10/2008 Zr-95 -2.50E+00 3.60E+00 1.40E+01 TM TM 20 20 20 LI14424-03 9/24/2008 LI14424-03 9/24/2008 L14424-03 9/24/2008 AcTh-228 Ag-108m Ag-1 10m 1.50E+00 1.00E-01 2.70E+00 6.80E+00 1.30E+00 2.60E+00 2.40E+01 4.70E+00 8.90E+00 I

TM TM TM TM 20 20 20 LI14424-03 9/24/2008 L14424-03 9/24/2008 L14424-03 9/24/2008 Ba-140 Be-7 Ce-141

-6.OOE-01

-6.OOE+00

-1. 1OE+00 3.90E+00 1.50E+01 2.60E+00 1.50E+01 5.30E+01 9.20E+00 U

TM 20 L14424-03 9/24/2008 Ce- 144 4.30E+00 8.70E+00 3.OOE+01 TM TM TM 20 20 20 L14424-03 9/24/2008 L14424-03 9/24/2008 L14424-03 9/24/2008 Co-57 Co-58 Co-60

-9.OOE-01 4.OOE-01 5.OOE-01 1.20E+00 1.90E+00 2.OOE+00 4.30E+00 6.60E+00 7.30E+00 I

TM 20 L14424-03 9/24/2008 Cr-51 -8.OOE+00 1.50E+01 5.30E+01 TM 20 L14424-03 9/24/2008 Cs- 134 -8.OOE-01 1.40E+00 6.30E+00 TM 20 LI14424-03 9/24/2008 Cs-137 2.OOE-01 1.90E+00 6.60E+00 TM 20 LI14424-03 9/24/2008 Fe-59 -6.20E+00 3.90E+00 1.50E+01 TM 20 LI14424-03 9/24/2008 1-131 6.20E+00 5.OOE+00 1.70E+01 TM 20 LI14424-03 9/24/2008 1-131 4.80E-01 3.20E-01 9.50E-01 TM 20 L14424-03 9/24/2008 K-40 1.29E+03 6.20E+01 8.90E+01

TM TM TM 20 20 20 L14424-03 9/24/2008 L14424-03 9/24/2008 L14424-03 9/24/2008 La-140 Mn-54 Nb-95

-6.OOE-01

-7.OOE-01

-2.60E+00 3.90E+00 1.60E+00 2.10E+00 1.50E+01 5.80E+00

8. 1OE+00 I

TM TM 20 20 L14424-03 9/24/2008 L14424-03 9/24/2008 Ru-103 Ru-106

-7.OOE-01

-2.50E+01

2. 1OE+00 1.50E+01 7.50E+00 5.60E+01 1.70E+01 I

TM 20 L14424-03 9/24/2008 Sb-124 -1.40E+00 4.50E+00 TM 20 L14424-03 9/24/2008 Sb-125 2.20E+00 4.OOE+00 1.40E+01 TM 20 L14424-03 9/24/2008 Se-75 0.OOE+00 2.00E+00 6.90E+00 i TM 20 L14424-03 9/24/2008 Zn-65 -I.80E+00 4.50E+00 1.60E+01 20 LI14424-03 9/24/2008 Zr-95 -8.80E+00 2.90E+00 1.20E+01 I

TM TM 20 L14550-03 10/22/2008 AcTh-228 -3.50E+00 7.80E+00 2.80E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 190 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 20 L14550-03 10/22/2008 Ag- 108m 2.50E+00 1.40E+00 4.70E+00 TM 20 L14550-03 10/22/2008 Ag-1 10m -2.OOE+00 2.40E+00 9.00E+00 TM 20 L14550-03 10/22/2008 Ba-140 5.OOE-01 3.20E+00 1.20E+01 TM 20 L14550-03 10/22/2008 Be-7 1.00E+00 1.40E+01 5.10E+01 TM 20 L14550-03 10/22/2008 Ce-141 -7.40E+00 2.90E+00 1.00E+01 TM 20 L14550-03 10/22/2008 Ce-144 9.00E+00 1.00E+01 3.40E+01 TM 20 L14550-03 10/22/2008 Co-57 -1.40E+00 1.30E+00 4.60E+00 TM 20 L14550-03 10/22/2008 Co-58 -1.70E+00 2.OOE+00 7.30E+00 TM 20 L14550-03 10/22/2008 Co-60 -3.OOE-01 2.OOE+00 7.5013+00 TM 20 L14550-03 10/22/2008 Cr-51 5.00E+00 1.70E+01 5.80E+01 TM 20 L14550-03 10/22/2008 Cs-134 -1.00E-01 2. I OE+00 7.8013+00 TM 20 L14550-03 10/22/2008 Cs-137 -2.501E+00 1.60E+00 6.30E+00 TM 20 L14550-03 10/22/2008 Fe-59 -1.20E+00 4.40E+00 1.60E+01 TM 20 L14550-03 10/22/2008 1-131 -2.1 OE+00 3.2013+00 1.20E+01 TM 20 L14550-03 10/22/2008 1-131 -1.15E-01 2.00E-02 9.40E-01 TM 20 L14550-03 10/22/2008 K-40 1.43E+03 6.90E+01 9.80E+01 TM 20 114550-03 10/22/2008 La-140 5.OOE-01 3.20E+00 1.20E+01 TM 20 L14550-03 10/22/2008 Mn-54 -1.00E+00 1.70E+00 6.40E+00 TM 20 L14550-03 10/22/2008 Nb-95 -1.90E+00 2.5013+00 9. 101E+00 TM 20 L14550-03 10/22/2008 Ru-103 -1.50E+00 2.00E+00 7.30E+00 TM 20 L14550-03 10/22/2008 Ru-106 -2.20E+01 1.70E+0I 6.50E+01 TM 20 L14550-03 10/22/2008 Sb-124 -6.00E+00 4.30E+00 1.80E+01 TM 20 L14550-03 10/22/2008 Sb-125 4.10E+00. 4.20E+00 1.40E+01 TM 20 L14550-03 10/22/2008 Se-75 9.OOE-01 2.00E+00 7.00E+00 TM 20 L14550-03 10/22/2008 Zn-65 1.50E+00 4.90E+00 1.70E+01 TM 20 L14550-03 10/22/2008 Zr-95 4.OOE+00 3.OOE+00 1.00E+01 TM 20 L114638-03 11/19/2008 AcTh-228 -3.90E+00 6.40E+00 2.30E+01 TM 20 L14638-03 11/19/2008 Ag-108m 2.70E+00 1.30E+00 4.40E+00 TM 20 L114638-03 11/19/2008 Ag-I Om 9.00E-01 2.30E+00 8.20E+00 TM 20 L14638-03 11/19/2008 Ba-140 -5.50E+00 3.70E+00 1.50E+01 TM 20 L14638-03 11/19/2008 Be-7 -9.OOE+00 1.30E+01 4.80E+01 TM 20 L14638-03 11/19/2008 Ce-I141 -9.00E-01 2.70E+00 9.3013+00 TM 20 L14638-03 11/19/2008 Ce-144 -1.00E+00 8.90E+00 3.10E+01 TM 20 L14638-03 11/19/2008 Co-57 -5.OOE-01 .10OE+00 4.00E+00 TM 20 L14638-03 11/19/2008 Co-58 1.101E+00 1.70E+00 5.90E+00 TM 20 L14638-03 11/19/2008 Co-60 -1.60E+00 1.90E+00 7. 101E+00 TM 20 L14638-03 11/19/2008 Cr-51 -6.OOE+00 1.50E+01 5.30E+01 TM 20 L14638-03 11/19/2008 Cs-134 -3.00E-01 1.4013+00 6.70E+00 TM 20 L14638-03 11/19/2008 Cs-137 -1.40E+00 1.60E+00 5.90E+00 TM 20 L14638-03 11/19/2008 Fe-59 -6.70E+00 3.90E+00 1.50E+01 TM 20 L14638-03 11/19/2008 1-131 4.30E+00 4.40E+00 1.50E+01 TM 20 L14638-03 11/19/2008 1-131 2.00E-01 2.40E-01 8.90E-01 TM 20 L14638-03 11/19/2008 K-40 1.32E+03 5.80E+01 7.30E+01 TM 20 L14638-03 11/19/2008 La-140 -5.50E+00 3.70E+00 1.50E+01 TM 20 L14638-03 11/19/2008 Mn-54 -1.50E+00 1.60E+00 5.80E+00 TM 20 L14638-03 11/19/2008 Nb-95 1.30E+00 2.00E+00 7.00E+00 TM 20 L14638-03 11/19/2008 Ru-103 4.00E-01 1.70E+00 5.90E+00 TM 20 L14638-03 11/19/2008 Ru-106 3.OOE+00 1.50E+01 5.30E+01 TM 20 L14638-03 11/19/2008 Sb-124 5.70E+00 4.20E+00 1.40E+01 TM 20 L14638-03 11/19/2008 Sb-125 5.40E+00 4. 1OE+00 1.40E+01 TM 20 L14638-03 11/19/2008 Se-75 -3. 101E+00 1.80E+00 6.50E+00 TM 20 L14638-03 11/19/2008 Zn-65 -1.20E+00 4.20E+00 1.50E+01 TM 20 L14638-03 11/19/2008 Zr-95 -2.1 OE+00 2.80E+00 1.00E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 191

TYPE Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

U TM 20 L14726-03 12/18/2008 AcTh-228 3.70E+00 6.60E+00 2.30E+01 TM 20 L14726-03 12/18/2008 Ag-108m -I.00E-01 1.40E+00 4.90E+00 TM 20 L14726-03 12/18/2008 Ag-110m 2.OOE-01 2.30E+00 8.30E+00 TM 20 L14726-03 12/18/2008 Ba-140 -6.80E+00 3.20E+00 1.40E+01 TM 20 L14726-03 12/18/2008 Be-7 1.60E+01 1.40E+01 4.80E+01 TM 20 L14726-03 12/18/2008 Ce-141 -1.00E+00 2.40E+00 8.40E+00 TM 20 L14726-03 12/18/2008 Ce-144 -1.00E-01 8.1OE+00 2.80E+01 TM 20 L14726-03 12/18/2008 Co-57 8.OOE-01 1.1OE+00 3.60E+00 TM TM TM 20 20 20 L14726-03 L14726-03 L14726-03 12/18/2008 12/18/2008 12/J18/2008 Co-58 Co-60 Cr-51

-1.1OE+00 1.20E+00

-1.20E+01 2.00E+00 2.20E+00 1.30E+01 7.30E+00 7.70E+00 4.70E+0 I I

5.30E+00 TM TM TM 20 20 20 L14726-03 L14726-03 L14726-03 12/18/2008 12/18/2008 12/18/2008 Cs-134 Cs-137 Fe-59

-4.OOE-01 2.OOE-01

-1.30E+00 1.20E+00 1.80E+00 4.50E+00

6.20E+00 1.60E+01 I

TM 20 L14726-03 12/18/2008 1-131 -4.OOE-01 1.70E-01 8.70E-01 TM TM TM 20 20 20 L14726-03 L14726-03 L14726-03 12/18/2008 12/18/2008 12/18/2008 1-131 K-40 La- 140

-8.OOE-01 1.41E+03

-6.80E+00 3.50E+00 6.60E+0 I 3.20E+00 1.20E+01 1.00E+02 1.40E+01

I TM 20 L14726-03 12/18/2008 Mn-54 -1.30E+00 1.70E+00 6.30E+00 TM 20 L14726-03 12/18/2008 Nb-95 -8.OOE-01 2.OOE+00 7.40E+00 TM TM TM 20 20 20 L14726-03 L14726-03 L14726-03 12/18/2008 12/18/2008 12/18/2008 Ru-103 Ru-106 Sb-124 6.OOE-01

-9.00E+00

-2.80E+00 1.80E+00 1.40E+01 3.90E+00 6.40E+00 5.20E+01 1.50E+01 I

TM 20 L14726-03 12/18/2008 Sb-125 -I.50E+00 4.30E+00 1.50E+01 TM TM 20 20 L14726-03 L14726-03 12/18/2008 12/18/2008 Se-75 Zn-65 1.70E+00

-5.50E+00 1.70E+00 4.40E+00 5.80E+00 1.60E+01 !

TM 20 L14726-03 12/18/2008 Zr-95 -1.40E+00 3.40E+00 1.20E+01 TM TM TM 24 24 24 L13909-04 L13909-04 L13909-04 5/7/2008 5/7/2008 5/7/2008 AcTh-228 Ag-108m Ag-110m 9.50E+00 5.OOE-01 2.90E+00 8.30E+00 1.70E+00 2.80E+00 2.80E+01 5.90E+00 9.70E+00 I

TM 24 L13909-04 5/7/2008 Ba-140 2.60E+00 3.30E+00 1.20E+01 TM TM 24 24 L13909-04 L13909-04 5/7/2008 5/7/2008 Be-7 Ce-I141

-5.30E+01

-1.80E+00 1.80E+01 2.90E+00 7.30E+01 1.00E+01 3.40E+01 I

TM 24 L13909-04 5/7/2008 Ce-144 1.00E+01 1.00E+01 TM TM TM 24 24 24 L13909-04 L13909-04 L13909-04 5/7/2008 5/7/2008 5/7/2008 Co-57 Co-58 Co-60

-4.OOE-01 1.50E+00

-5.OOE-01 1.00E+00 1.90E+00 2.OOE+00 3.60E+00 6.70E+00 8.OOE+00 i

TM 24 L13909-04 5/7/2008 Cr-51 2.20E+0I 1.60E+01 5.30E+01 TM TM 24 24 LI13909-04 L13909-04 5/7/2008 5/7/2008 Cs-134 Cs-137

-3.OOE+00 1.90E+00 8.OOE-01 1.50E+00 2.OOE+00

6. 10E+00

7. 1OE+00 7.OOE+00 2.20E+01 I

TM 24 L13909-04 5/7/2008 Fe-59 TM TM TM 24 24 24 L13909-04 L13909-04 L13909-04 5/7/2008 5/7/2008 5/7/2008 1-131 1-131 K-40

-9.OOE-01

-1.09E-01 1.52E+03 3.OOE+00 1.70E-02 9.OOE+01 1.1OE+0I 6.30E-01 1.30E+02

TM 24 LI13909-04 5/7/2008 La-140 2.60E+00 3.30E+00 1.20E+01 TM TM 24 24 LI13909-04 L13909-04 5/7/2008 5/7/2008 Mn-54 Nb-95 9.OOE-01 1.30E+00

-2.80E+00 2.10E+00 2.20E+00 2.OOE+00 7.40E+00 7.90E+00 7.60E+00 I

TM 24 LI13909-04 5/7/2008 Ru-103 TM 24 LI13909-04 5/7/2008 Ru-106 1.60E+01 1.70E+01 5.90E+01 TM 24 L13909-04 5/7/2008 Sb-124 1.20E+00 4.80E+00 1.90E+01 TM 24 L13909-04 5/7/2008 Sb-125 2.70E+00 5.30E+00 1.90E+01 TM 24 L13909-04 5/7/2008 Se-75 2.40E+00 2.OOE+00 6.70E+00 TM 24 L13909-04 5/7/2008 Zn-65 2.30E+00 5.80E+00 2.10E+01 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 192

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 24 L13909-04 5/7/2008 Zr-95 1.50E+00 3.80E+00 1.30E+01 TM 24 LI3956-04 5/21/2008 AcTh-228 1.26E+01 8.80E+00 2.90E+01 TM 24 LI3956-04 5/21/2008 Ag- 108m -1.70E+00 1.80E+00 6.50E+00 TM 24 LI3956-04 5/21/2008 Ag-I Om 7.OOE-01 2.80E+00 9.90E+00 TM 24 L13956-04 5/21/2008 Ba-140 -1 .90E+00 3.OOE+00 1.20E+01 TM 24 L13956-04 5/21/2008 Be-7 2.OOE+00 1.80E+01 6.20E+01 TM 24 L13956-04 5/21/2008 Ce-I141 1.80E+00 2.90E+00 9.70E+00 TM 24 LI13956-04 5/21/2008 Ce-144 1.50E+01 1.IOE+01 3.70E+01 TM 24 L13956-04 5/21/2008 Co-57 -4.OOE-01 1.60E+00 5.40E+00 TM 24 L13956-04 5/21/2008 Co-58 7.OOE-01 2.OOE+00 7.20E+00 TM 24 L13956-04 5/21/2008 Co-60 1.00E+00 2.OOE+00 7.30E+00 TM 24 LI3956-04 5/21/2008 Cr-51 1.80E+01 1.90E+01 6.40E+01 TM 24 L13956-04 5/21/2008 Cs-134 2.OOE-01 1.70E+00 7.50E+00 TM 24 L13956-04 5/21/2008 Cs-137 3.60E+00 2.20E+00 7.20E+00 TM 24 L13956-04 5/21/2008 Fe-59 -5.90E+00 4.90E+00 1.90E+01 TM 24 LI3956-04 5/21/2008 1-131 1.00E-01 1.80E-01 8.70E-01 TM 24 L13956-04 5/21/2008 1-131 3.90E+00 3.70E+00 1.30E+01 TM 24 L13956-04 5/21/2008 K-40 1.69E+03 8.OOE+01 9.90E+01 TM 24 L113956-04 5/21/2008 La-140 -1.90E+00 3.OOE+00 1.20E+01 TM 24 L13956-04 5/21/2008 Mn-54 2.80E+00 1.80E+00 6.OOE+00 TM 24 L13956-04 5/21/2008 Nb-95 1.30E+00 2.1OE+00 7.40E+00 TM 24 L13956-04 5/21/2008 Ru-103 -3.20E+00 2.OOE+00 7.50E+00 TM 24 L13956-04 5/21/2008 Ru-106 -8.OOE+00 1.90E+01 7.OOE+01 TM 24 L13956-04 5/21/2008 Sb-124 3.40E+00 5.OOE+00 1.80E+01 TM 24 L13956-04 5/21/2008 Sb-125 -7.70E+00 5.30E+00 2.OOE+01 TM 24 L13956-04 5/21/2008 Se-75 5.OOE-01 2.1 OE+00 7.30E+00 TM 24 L13956-04 5/21/2008 Zn-65 -3.80E+00 5.20E+00 1.90E+01 TM 24 L13956-04 5/21/2008 Zr-95 -4.OOE-01 3.60E+00 1.30E+01 TM 24 L14012-04 6/5/2008 AcTh-228 3.OOE+00 6.60E+00 2.30E+01 TM 24 L14012-04 6/5/2008 Ag-108m -2.50E+00 1.50E+00 5.50E+00 TM 24 L14012-04 6/5/2008 Ag-1 10m -1.80E+00 2.30E+00 8.60E+00 TM 24 L14012-04 6/5/2008 Ba-140 5.40E+00 3.40E+00 1.10E+01 TM 24 L14012-04 6/5/2008 Be-7 -3.OOE+00 1.50E+01 5.40E+01 TM 24 L14012-04 6/5/2008 Ce-141 3.40E+00 2.70E+00 9. IOE+00 TM 24 L14012-04 6/5/2008 Ce-144 2.03E+01 9.30E+00 3.OOE+01 TM 24 L14012-04 6/5/2008 Co-57 -2.OOE-01 1.20E+00 4.1OE+00 TM 24 L14012-04 6/5/2008 Co-58 -2.30E+00 1.80E+00 6.80E+00 TM 24 L14012-04 6/5/2008 Co-60 -5.OOE-01 1.80E+00 6.70E+00 TM 24 L14012-04 6/5/2008 Cr-51 1.40E+01 1.70E+01 5.80E+0I TM 24 L14012-04 6/5/2008 'Cs-134 -1.40E+00 1.40E+00 6.30E+00 TM 24 L14012-04 6/5/2008 Cs-137 1.20E+00 2.1OE+00 7.1OE+00 TM 24 L14012-04 6/5/2008 Fe-59 4.OOE-01 4.1OE+00 1.50E+01 TM 24 L14012-04 6/5/2008 1-131 6.70E+00 5.20E+00 1.70E+01 TM 24 L14012-04 6/5/2008 1-131 -1.77E-01 2.70E-02 8.90E-01 TM 24 L14012-04 6/5/2008 K-40 1.67E+03 6.80E+01 8.50E+01 TM 24 L14012-04 6/5/2008 La-140 5.40E+00 3.40E+00 1.1 OE+0 I TM 24 L14012-04 6/5/2008 Mn-54 -4.00E-0I 1.80E+00 6.30E+00 TM 24 L14012-04 6/5/2008 Nb-95 -1.50E+00 2.30E+00 8.30E+00 TM 24 L14012-04 6/5/2008 Ru-103 -1.20E+00 1.80E+00 6.50E+00 TM 24 L14012-04 6/5/2008 Ru-106 -1.40E+01 1.50E+01 5.70E+0I TM 24 L14012-04 6/5/2008 Sb-124 -4.OOE+00 4.20E+00 1.70E+01 TM 24 L14012-04 6/5/2008 Sb-125 -1.70E+00 4.20E+00 1.50E+01 TM 24 L14012-04 6/5/2008 Se-75 -2.90E+00 2.OOE+00 7.20E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 193

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 U

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I TM TM 24 24 L14012-04 L14012-04 6/5/2008 6/5/2008 Zn-65 Zr-95

-7.20E+00 3.30E+00 4.50E+00 3.30E+00 1.70E+01 1.1OE+01 i

TM 24 L14053-04 6/18/2008 AcTh-228 9.OOE+00 6.90E+00 2.30E+01 TM TM 24 24 L14053-04 L14053-04 6/18/2008 6/18/2008 Ag-108m Ag- I10m 4.90E-01 1.30E+00

-3.70E+00 8.90E-01 1.70E+00 3.60E+00 3.OOE+00 5.70E+00 1.30E+01 I

TM 24 L14053-04 6/18/2008 Ba-140 TM TM TM 24 24 24 L14053-04 L14053-04 L14053-04 6/18/2008 6/18/2008 6/18/2008 Be-7

.Ce-141 Ce-144 3.70E+00

-3.40E+00 1.80E+00

9. 1OE+00 1.90E+00 5.50E+00 3.1 OE+0 I 6.50E+00 1.80E+01 I

1.001E+00 U

TM 24 L14053-04 6/18/2008 Co-57 -1.00E-01 3.40E+00 TM 24 L14053-04 6/18/2008 Co-58 -3.OOE-01 1.20E+00 4.20E+00 TM 24 L14053-04 6/18/2008 Co-60 1.90E+00 1.30E+00 4.20E+00 TM 24 L14053-04 6/18/2008 Cr-51 7.00E+00 1.20E+01 4.OOE+01 TM TM TM 24 24 24 L14053-04 L14053-04 L14053-04 6/18/2008 6/18/2008 6/18/2008 Cs-134 Cs-137 Fe-59 5.20E-01 1.80E+00 2.80E+00 9.50E-01 1.30E+00 3.10E+00 3.90E+00 4.30E+00 1.00E+0I I

TM 24 L14053-04 6/18/2008 1-131 6.OOE-02 1.70E-01 9.10E-01 TM TM TM 24 24 24 L14053-04 L14053-04 L14053-04 6/18/2008 6/18/2008 6/18/2008 1-131 K-40 La- 140 7.70E+00 1.71 E+03

-4.OOE+00 4.30E+00 4.90E+01 3.60E+00 1.40E+0I 7.80E+01 1.30E+01

I TM TM TM 24 24 24 L14053-04 L14053-04 L14053-04 6/18/2008 6/18/2008 6/18/2008 Mn-54 Nb-95 Ru-103

-4.OOE-01 6.OOE-01

-1.80E+00 1.10E+00 1.501E+00 1.30E+00 3.80E+00 5.OOE+00 4.70E+00 I

TM 24 L14053-04 6/18/2008 Ru-106 -I.10E+01 1.00E+01 3.70E+01 TM TM TM 24 24 24 L14053-04 L14053-04 L14053-04 6/18/2008 6/18/2008 6/18/2008 Sb-124 Sb-125 Se-75

-3.1OE+00

-1.001E-01 5.001E-01 2.80E+00 2.70E+00 1.101E+00 1.10E+01 9.30E+00 3.80E+00 I

TM TM TM 24 24 24 L14053-04 L14053-04 L14109-04 6/18/2008 6/18/2008 7/1/2008 Zn-65 Zr-95 AcTh-228

-4.60E+00

-9.OOE-01 4.70E+00 2.90E+00 2.1OE+00 6.OOE+00 1.00E+01 7.30E+00 2.OOE+01 3

TM 24 L14109-04 7/1/2008 Ag-108m -1.20E+00 1.1OE+00 3.80E+00 TM TM TM 24 24 24 L14109-04 L14109-04 L14109-04 7/1/2008 7/1/2008 7/1/2008 Ag-110m Ba-140 Be-7

-9.00E-01 7.00E-01 1.20E+01 2.OOE+00 2.70E+00 1.00E+01 6.90E+00 9.70E+00 3.40E+01 I

TM TM TM 24 24 24 L14109-04 L14109-04 L14109-04 7/1/2008 7/1/2008 7/1/2008 Ce-141 Ce-144 Co-57 1.40E+00

-9.70E+00

-2.60E-01 2.40E+00 7.OOE+00 9.30E-01

8. 1OE+00 2.40E+0 I 3.20E+00 i

TM 24 L14109-04 7/1/2008 Co-58 7.OOE-01 1.50E+00 5.OOE+00 TM TM 24 24 L14109-04 L14109-04 7/1/2008 7/1/2008 Co-60 Cr-51 3.80E+00 5.00E+00 1.40E+00 1.30E+01 1.20E+00 4.50E+00 4.40E+01 5.00E+00 I

TM 24 L14109-04 7/1/2008 Cs-134 1.40E+00 TM TM TM 24 24 24 L14109-04 L14109-04 L14109-04 7/1/2008 7/1/2008 7/1/2008 Cs-137 Fe-59 1-131 1.60E+00 3.40E+00 4.OOE-01 1.30E+00 3.40E+00 3.30E+00 4.40E+00 1.10E+01 1.10E+01 I

TM 24 L14109-04 7/1/2008 1-131 -1.64E-01 2.50E-02 8.30E-01 TM TM TM 24 24 LI14109-04 LI14109-04 L14109-04 7/1/2008 7/1/2008 7/1/2008 K-40 La-140 1.87E+03 7.00E-01 1.50E+00 5.50E+01 2.70E+00 1.40E+00 7.10E+01 9.70E+00 4.80E+00 I

24 Mn-54 TM TM TM 24 24 24 LI14109-04 L14109-04 L14109-04 7/1/2008 7/1/2008 7/1/2008 Nb-95 Ru-103 Ru-106

-2.10E+00

-8.00E-01

-2.00E+01 1.80E+00 1.60E+00 1.20E+01 6.50E+00 5.60E+00 4.40E+0I TM 24 L14109-04 7/1/2008 Sb-124 2.00E+00 3.00E+00 1.00E+01 TM 24 L14109-04 7/1/2008 Sb-125 1.20E+00 3.20E+00 1.IOE+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 194 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 24 L14109-04 7/1/2008 Se-75 2.30E+00 1.60E+00 5.30E+00 TM 24 L14109-04 7/1/2008 Zn-65 -3.40E+00 5.30E+00 1.80E+01 TM 24 L14109-04 7/1/2008 Zr-95 1.70E+00 2.60E+00 8.90E+00 TM 24 L14162-04 7/16/2008 AcTh-228 1.30E+00 7.70E+00 2.70E+01 TM 24 L14162-04 7/16/2008 Ag-108m -1.00E+00 1.30E+00 4.60E+00 TM 24 L14162-04 7/16/2008 Ag-1 10m -4.OOE-01 2.60E+00 9.20E+00 TM 24 L14162-04 7/16/2008 Ba-140 4.OOE+00 3.60E+00 1.20E+01 TM 24 L14162-04 7/16/2008 Be-7 -1.70E+01 1.40E+01 5.20E+01 TM 24 L14162-04 7/16/2008 Ce-I141 -I.00E+00 2.40E+00 8.20E+00 TM 24 L14162-04 7/16/2008 Ce-I144 -3.40E+00 8.30E+00 2.90E+01 TM 24 L14162-04 7/16/2008 Co-57 -2.20E+00 1.1OE+00 3.80E+00 TM 24 L14162-04 7/16/2008 Co-58 -2.OOE+00 1.90E+00 7.OOE+00 TM 24 L14162-04 7/16/2008 Co-60 -2.50E+00 2.OOE+00 7.80E+00 TM 24 L14162-04 7/16/2008 Cr-51 1.20E+01 1.50E+01 5.OOE+01 TM 24 L14162-04 7/16/2008 Cs-134 5.OOE-01 1.20E+00 5.50E+00 TM 24 L14162-04 7/16/2008 Cs-137 2.20E+00 1.70E+00 5.70E+00 TM 24 L14162-04 7/16/2008 Fe-59 9.OOE-01 4.20E+00 1.50E+01 TM 24 L14162-04 7/16/2008 1-131 -1.56E-01 2.70E-02 9.10E-01 TM 24 L14162-04 7/16/2008 1-131 1.70E+00 3.50E+00 1.20E+01 TM 24 L14162-04 7/16/2008 K-40 1.48E+03 6.80E+01 1.10OE+02 TM 24 L14162-04 7/16/2008 La-140 4.OOE+00 3.60E+00 1.20E+01 TM 24 114162-04 7/16/2008 Mn-54 -2.60E+00 1.80E+00 6.70E+00 TM 24 L14162-04 7/16/2008 Nb-95 -2.20E+00 2.30E+00 8.50E+00 TM 24 L14162-04 7/16/2008 Ru-I103 -I.30E+00 1.90E+00 6.80E+00 TM 24 L14162-04 7/16/2008 Ru- 106 1.20E+01 1.40E+01 4.90E+01 TM 24 L14162-04 7/16/2008 Sb-124 5.70E+00 4.50E+00 1.50E+01 TM 24 L14162-04 7/16/2008 Sb-125 1.20E+00 4. 1OE+00 1.40E+01 TM 24 L14162-04 7/16/2008 Se-75 3.30E+00 2.1OE+00 6.80E+00 TM 24 L14162-04 7/16/2008 Zn-65 -1.30E+00 4.80E+00 1.70E+01 TM 24 L14162-04 7/16/2008 Zr-95 -1.80E+00 3.50E+00 1.30E+01 TM 24 LI4320-04 8/27/2008 AcTh-228 3.30E+00 9.90E+00 3.50E+01 TM 24 L14320-04 8/27/2008 Ag-108m 1.50E+00 1.90E+00 6.60E+00 TM 24 L14320-04 8/27/2008 Ag-1 IOm 2.90E+00 3.20E+00 1.10E+01 TM 24 L14320-04 8/27/2008 Ba-140 -6.OOE-01 3.50E+00 1.40E+01 TM 24 L14320-04 8/27/2008 Be-7 -8.OOE+00 2.OOE+01 7.40E+01 TM 24 L14320-04 8/27/2008 Ce-141 2.60E+00 3.30E+00 1.10E+01 TM 24 L14320-04 8/27/2008 Ce- 144 -I.20E+01 1.30E+01 4.70E+01 TM 24 L14320-04 8/27/2008 Co-57 1.70E+00 1.70E+00 5.70E+00 TM 24 L14320-04 8/27/2008 Co-58 7.OOE-01 2.40E+00 8.80E+00 TM 24 L14320-04 8/27/2008 Co-60 5.OOE-01 2.60E+00 9.50E+00 TM 24 L14320-04 8/27/2008 Cr-51 5.OOE+00 2.20E+01 7.60E+01 TM 24 L14320-04 8/27/2008 Cs-134 1.00E-01 2.1 OE+00 9.90E+00 TM 24 L14320-04 8/27/2008 Cs-137 5.80E+00 2.1OE+00 6.30E+00 TM 24 L14320-04 8/27/2008 Fe-59 1.30E+00 5.60E+00 2.OOE+01 TM 24 L14320-04 8/27/2008 1-131 2.OOE-02 1.00E-01 5.90E-01 TM 24 L114320-04 8/27/2008 1-131 8.OOE-01 3.90E+00 1.40E+01 TM 24 L14320-04 8/27/2008 K-40 1.59E+03 9.20E+01 1.1 OE+02 TM 24 L14320-04 8/27/2008 La-140 -6.OOE-01 3.50E+00 1.40E+01 TM 24 L14320-04 8/27/2008 Mn-54 -3.OOE-01 2.OOE+00 7.70E+00 TM 24 L14320-04 8/27/2008 Nb-95 -2.90E+00 2.60E+00 1.00E+01 TM 24 L14320-04 8/27/2008 Ru- 103 1.70E+00 2.40E+00 8.50E+00 TM 24 L14320-04 8/27/2008 Ru-106 -2.50E+01 2.OOE+01 7.70E+01 TM 24 L14320-04 8/27/2008 Sb-124 -5.1 OE+00 5.60E+00 2.40E+0 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 195

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 U

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TM TM TM 24 24 24 L14320-04 L14320-04 L14320-04 8/27/2008 8/27/2008 8/27/2008 Sb-125 Se-75 Zn-65 4.40E+00 2.OOE-01

-1.04E+01 6.50E+00 2.70E+00

6. 1OE+00 2.20E+01 9.50E+00 2.50E+01 U

TM 24 L14320-04 8/27/2008 Zr-95 -5.40E+00 4.70E+00 1.80E+01 I

I I

U I

I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

196 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG 8 L13958-01 5/27/2008 AcTh-228 1.38E+02 5.80E+01 1.70E+02 TG 8 L13958-01 5/27/2008 Ag- 108m -6.90E+00 9. 1OE+00 3.70E+01 TG 8 L13958-01 5/27/2008 Ag-1 10m -2.90E+0 I 2.40E+0I 9.80E+01 TG 8 L13958-01 5/27/2008 Ba-140 -2.30E+01 2.80E+01 1.20E+02 TG 8 L13958-01 5/27/2008 Be-7 2.50E+02 1.30E+02 4. 10E+02 TG 8 L13958-01 5/27/2008 Ce-I141 5.OOE+00 1.70E+01 5.90E+01 TG 8 L13958-01 5/27/2008 Ce-144 2.70E+01 6.20E+01 2.20E+02 TG 8 L13958-01 5/27/2008 Co-57 -8.70E+00 6.80E+00 2.60E+01 TG 8 L13958-01 5/27/2008 Co-58 -I.20E+01 1.30E+01 5.60E+0I TG 8 L13958-01 5/27/2008 Co-60 1.00E+00 1.80E+01 7.OOE+01 TG 8 L13958-01 5/27/2008 Cr-51 -2.30E+02 1.1 OE+02 4.60E+02 TG 8 L13958-01 5/27/2008 Cs-134 2.80E+01 1.1 OE+0 I 4.60E+01 TG 8 L13958-01 5/27/2008 Cs-137 0.OOE+00 1.50E+01 5.80E+01 TG 8 L13958-01 5/27/2008 Fe-59 1.40E+01 2.90E+01 1.1 OE+02 TG 8 L13958-01 5/27/2008 1-131 -9.OOE+00 2.1OE+0I 7.90E+01 TG 8 L13958-01 5/27/2008 1-131 1.90E+00 5.40E+00 2.90E+01 TG 8 L13958-01 5/27/2008 K-40 3.66E+03 4.60E+02 8.20E+02 TG 8 L13958-01 5/27/2008 La-140 -2.30E+01 2.80E+01 1.20E+02 TG 8 L13958-01 5/27/2008 Mn-54 -3.80E+01 1.40E+01 6.60E+01 TG 8 L13958-01 5/27/2008 Nb-95 1.20E+01 1.70E+01 6.OOE+01 TG 8 L13958-01 5/27/2008 Ru-103 -2.OOE+00 1.30E+01 4.80E+01 TG 8 L13958-01 5/27/2008 Ru-106 -1.20E+02 1.30E+02 5.1OE+02 TG 8 L13958-01 5/27/2008 Sb-124 3.60E+01 4.OOE+01 1.40E+02 TG 8 L13958-01 5/27/2008 Sb-125 3.60E+01 3.30E+01 1.1OE+02 TG 8 L13958-01 5/27/2008 Se-75 -3.OOE+00 1.10E+01 4.30E+01 TG 8 L13958-01 5/27/2008 Zn-65 -6.70E+01 3.90E+01 1.70E+02 TG 8 L13958-01 5/27/2008 Zr-95 2.40E+01 2.70E+01 9.50E+01 TG 8 L14034-01 6/17/2008 AcTh-228 -5.OOE+00 6.OOE+01 2.20E+02 TG 8 L14034-01 6/17/2008 Ag-108m 5.OOE+00 1.1 OE+0 I 3.90E+0I TG 8 L14034-01 6/17/2008 Ag-110m -5.OOE+00 1.80E+01 6.80E+01 TG 8 L14034-01 6/17/2008 Ba-140 3.90E+01 4.80E+01 1.70E+02 TG 8 L14034-01 6/17/2008 Be-7 3.40E+02 2.OOE+02 6.50E+02 TG 8 L14034-01 6/17/2008 Ce- 141 3.30E+01 2.40E+01 7.90E+0 I TG 8 L14034-01 6/17/2008 Ce-144 -4.70E+01 6.70E+0 1 2.40E+02 TG 8 L14034-01 6/17/2008 Co-57 -1.00E+00 8.40E+00 2.90E+01 TG 8 L14034-01 6/17/2008 Co-58 -9.OOE+00 1.60E+01 5.90E+01 TG 8 L14034-01 6/17/2008 Co-60 1.00E+01 1.60E+01 5.70E+0I TG L14034-01 6/17/2008 Cr-51 1.00E+01 1.70E+02 5.80E+02 8

TG L14034-01 6/17/2008 Cs-134 -2.60E+01 1.00E+01 5.70E+01 8

TG L14034-01 6/17/2008 Cs-137 1.00E+00 1.50E+01 5.30E+01 8

TG L14034-01 6/17/2008 Fe-59 -4.80E+01 3.70E+01 1.50E+02 8

TG L14034-01 6/17/2008 1-131 -3.59E+00 5.50E-01 4.1OE+0I 8

TG L14034-01 6/17/2008 1-131 4.90E+01 7.20E+01 2.50E+02 8

TG L14034-01 6/17/2008 K-40 3.57E+03 3.60E+02 7.OOE+02 8

TG L14034-01 6/17/2008 La- 140 3.90E+01 4.80E+01 1.70E+02 8

TG L14034-01 6/17/2008 Mn-54 7.OOE+00 1.40E+01 5.10E+01 8

TG L14034-01 6/17/2008 Nb-95 -4.20E+01 2.20E+01 8.60E+0I 8

TG L14034-01 6/17/2008 Ru-103 -2.OOE+00 1.80E+01 6.60E+0 I 8

TG L14034-01 6/17/2008 Ru-106 -2.30E+02 1.30E+02 5.20E+02 8

TG L14034-01 6/17/2008 Sb-124 1.60E+01 3.90E+01 1.50E+02 8

TG L14034-01 6/17/2008 Sb-125 -3.30E+01 3.50E+01 1.30E+02 8

TG L14034-01 6/17/2008 Se-75 1.00E+01 1.80E+01 6.10E+01 8

TG LI14034-01 6/17/2008 Zn-65 4.OOE+00 3.60E+01 1.30E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 197

TYPE Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) 3 TG TG L14034-01 L14170-01 6/17/2008 7/22/2008 Zr-95 AcTh-228

-4.80E+01 2.10E+01 3.30E+01 6.60E+01 1.30E+02 2.40E+02 I

TG L14170-01 7/22/2008 Ag-108m -6.00E+00 1.30E+01 4.90E+01 TG TG L14170-01 L14170-01 7/22/2008 7/22/2008 Ag-I 10m Ba-140

-7.OOE+00 2.50E+01 2.80E+01 3.10E+01 2.1OE+02 1.10E+02 1.20E+02 5.80E+02

I TG L14170-01 7/22/2008 Be-7 8.80E+02 TG TG TG L14170-01 L14170-01 L14170-01 7/22/2008 7/22/2008 7/22/2008 Ce-141 Ce- 144 Co-57 2.40E+0 1 7.30E+01 2.20E+00 1.90E+01 7.20E+01 8.40E+00 6.50E+01 2.40E+02 2.90E+01 i

TG L14170-01 7/22/2008 Co-58 1.50E+01 1.70E+01 6.10E+01 TG TG L14170-01 L14170-01 7/22/2008 7/22/2008 Co-60 Cr-51 2.50E+01

-2.80E+02 9.00E+00 2.1OE+01 1.20E+02 1.20E+01 7.30E+01 5.OOE+02 4.90E+01 I

TG L14170-01 7/22/2008 Cs-134 TG TG TG L14170-01 L14170-01 L14170-01 7/22/2008 7/22/2008 7/22/2008 Cs-137 Fe-59 1-131 1.20E+01

-8.OOE+00

-1.40E+01 1.60E+01 3.40E+01 3.20E+01 5.70E+01 1.40E+02 1.20E+02 I

TG L14170-01 7/22/2008 1-131 -4.88E+00 8.40E-01 4.70E+01 TG TG L14170-01 L14170-01 7/22/2008 7/22/2008 K-40 La-140 3.63E+03 2.50E+01

-1.70E+01 4.80E+02 3.1OE+01 1.80E+01 8.90E+02 1.20E+02 7.20E+01 i

TG L14170-01 7/22/2008 Mn-54 TG L14170-01 7/22/2008 Nb-95 -2.20E+01 1.90E+01 7.80E+01 TG L14170-01 7/22/2008 Ru-103 1.80E+01 1.70E+01 5.70E+01 TG L14170-01 7/22/2008 Ru-106 1.00E+02 1.60E+02 5.70E+02 TG L14170-01 7/22/2008 Sb-124 2.70E+0 I 3.40E+01 1.30E+02 TG TG L14170-01 L14170-01 L14170-01 7/22/2008 7/22/2008 7/22/2008 Sb-125 Se-75 3.40E+01 1.50E+01

-4.1OE+01 4.00E+01 1.70E+01 4.40E+01 1.40E+02 5.80E+01 1.80E+02 I

TG Zn-65 TG TG TG L14170-01 L14318-01 L14318-01 7/22/2008 8/26/2008 8/26/2008 Zr-95 AcTh-228 Ag-108m 5.40E+0 I 8.40E+0 1

-1.30E+01 3.20E+01 5.10E+01 1.00E+01 1.00E+02 1.70E+02 3.90E+0 I I

TG L14318-01 8/26/2008 Ag-1 10m 1.40E+01 1.60E+01 5.60E+01 TG TG L14318-01 L14318-01 8/26/2008 8/26/2008 Ba-140 Be-7 3.40E+01 4.74E+03 2.40E+01 2.60E+OI 2.70E+02 1.70E+01 8.60E+01 4.40E+02 5.50E+01

i TG L14318-01 8/26/2008 Ce- 141 TG TG TG L14318-01 L14318-01 L14318-01 8/26/2008 8/26/2008 8/26/2008 Ce- 144 Co-57 Co-58

-4.OOE+00 1.03E+01

-4.OOE+00 6.30E+01 7.20E+00 1.20E+01 2.20E+02 2.40E+0 I 4.60E+01 I

TG L14318-01 8/26/2008 Co-60 0.00E+00 1.20E+01 4.70E+0 1 TG TG TG L14318-01 L14318-01 L14318-01 8/26/2008 8/26/2008 8/26/2008 Cr-5I Cs-134 Cs-137 8.00E+01

-1.30E+01 1.001E+00 1.20E+02 1.40E+01 1.20E+01 4.OOE+02 5.40E+0 I 4.50E+01 I

TG TG TG L14318-01 L14318-01 L14318-01 8/26/2008 8/26/2008 8/26/2008 Fe-59 1-131 1-131 7.OOE+00 3.40E+01

-1.20E+01 3.00E+01 1.90E+01 4.1OE+01 1.10E+02 5.70E+01 1.50E+02 I

TG L14318-01 8/26/2008 K-40 3.88E+03 3.50E+02 6.40E+02 TG TG L14318-01 L14318-01 8/26/2008 8/26/2008 La-140 Mn-54 3.40E+01

-1.30E+01

-1.60E+01 2.60E+01 1.1OE+01 1.70E+01 8.60E+01 4.40E+01 6.30E+01 I

TG L14318-01 8/26/2008 Nb-95 TG TG TG L14318-01 L14318-01 L14318-01 8/26/2008 8/26/2008 8/26/2008 Ru-103 Ru-106 Sb-124 4.OOE+00

-1.00E+01 4.60E+01 1.1OE+0 1 1.30E+02 2.OOE+01 4.10E+01 4.50E+02 5.20E+01 I

TG L14318-01 8/26/2008 Sb-125 2.70E+01 3.20E+01 1.10E+02 TG L14318-01 8/26/2008 Se-75 -4.OOE+00 1.40E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 4.90E+01 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 198

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG L14318-01 8/26/2008 Zn-65 -5.90E+01 5.40E+01 2.OOE+02 TG L14318-01 8/26/2008 Zr-95 4.70E+0 I 2.20E+01 6.70E+0I TG L14423-01 9/25/2008 AcTh-228 2.40E+01 5.50E+01 2.OOE+02 TG L14423-01 9/25/2008 Ag-108m -1.70E+01 1.10E+01 4.40E+0 I TG L14423-01 9/25/2008 Ag-110m -2.OOE+01 2.OOE+01 8.30E+01 TG L14423-01 9/25/2008 Ba-140 -2.70E+01 2.40E+01 1.20E+02 TG L14423-01 9/25/2008 Be-7 1.16E+03 2.OOE+02 5.1OE+02 TG L14423-01 9/25/2008 Ce-I141 -8.OOE+00 1.40E+01 5.30E+01 TG L14423-01 9/25/2008 Ce-144 5.40E+01 5.70E+01 1.90E+02 TG L14423-01 9/25/2008 Co-57 2.1OE+00 7.1OE+00 2.50E+01 TG L14423-01 9/25/2008 Co-58 6.OOE+00 1.30E+01 4.70E+0 I TG L14423-01 9/25/2008 Co-60 7.OOE+00 1.50E+01 5.80E+01 TG L14423-01 9/25/2008 Cr-5I 7.OOE+01 1.00E+02 3.60E+02 TG L14423-01 9/25/2008 Cs-134 -9.OOE+00 1.10E+01 5.50E+01 TG L14423-01 9/25/2008 Cs-137 0.OOE+00 1.20E+01 4.80E+0 1 TG L14423-01 9/25/2008 Fe-59 2.20E+01 2.90E+01 I.00E+02 TG L14423-01 9/25/2008 1-131 3.OOE+01 2.10E+01 6.80E+01 TG L14423-01 9/25/2008 1-131 -5.80E+00 1.00E+00 4.80E+0 I TG L14423-01 9/25/2008 K-40 4.19E+03 5.30E+02 1.1 OE+03 TG L14423-01 9/25/2008 La-140 -2.70E+01 2.40E+01 1.20E+02 TG L14423-01 9/25/2008 Mn-54 -1.40E+01 1.40E+01 5.90E+01 TG L14423-01 9/25/2008 Nb-95 -2.OOE+00 1.90E+01 7.30E+01 TG L14423-01 9/25/2008 Ru-103 -1.40E+01 1.30E+01 5.20E+01 TG L14423-01 9/25/2008 Ru-I106 -7.00E+01 1.20E+02 4.70E+02 TG L14423-01 9/25/2008 Sb-124 2.50E+01 2.50E+01 9.1OE+01 TG L14423-01 9/25/2008 Sb-125 5.OOE+00 3.70E+01 1.40E+02 TG L14423-01 9/25/2008 Se-75 1.00E+01 1.50E+01 5.10E+01 TG L14423-01 9/25/2008 Zn-65 -3.80E+01 4.OOE+01 1.60E+02 TG L14423-01 9/25/2008 Zr-95 -5.00E+00 2.80E+01 1.1 OE+02 TG L14539-01 10/21/2008 AcTh-228 9.OOE+01 6.80E+01 2.30E+02 TG L14539-01 10/21/2008 Ag- 108m 1.60E+01 9.80E+00 3.20E+O01 TG L14539-01 10/21/2008 Ag-1 10m 1.00E+00 1.90E+01 7.60E+0 I TG L14539-01 10/21/2008 Ba-140 -I.10E+01 2.80E+01 1.30E+02 TG L14539-01 10/21/2008 Be-7 1.08E+03 1.90E+02 4.60E+02 TG L14539-01 10/21/2008 Ce-141 3.OOE+00 1.30E+01 4.70E+0 I TG L14539-01 10/21/2008 Ce-144 -2.20E+01 4.70E+01 1.80E+02 TG L14539-01 10/21/2008 Co-57 -1.40E+00 6.OOE+00 2.20E+01 TG L14539-01 10/21/2008 Co-58 -1.50E+01 1.40E+01 6.20E+01 TG L14539-01 10/21/2008 Co-60 -3.10E+01 1.90E+01 8.90E+01 TG L14539-01 10/21/2008 Cr-51 7.OOE+01 1.1OE+02 3.90E+02 TG L14539-01 10/21/2008 Cs-134 1.40E+01 1.00E+01 4.40E+01 TG L14539-01 10/21/2008 Cs-137 9.00E+00 1.60E+01 5.70E+01 TG L14539-01 10/21/2008 Fe-59 -2.70E+01 2.90E+01 1.30E+02 TG L14539-01 10/21/2008 1-131 1.20E+01 2.60E+01 9.30E+01 TG L14539-01 10/21/2008 1-131 3.OOE+00 1.10E+01 4.70E+01 TG L14539-01 10/21/2008 K-40 3.18E+03 4.70E+02 8.60E+02 TG L14539-01 10/21/2008 La-140 -I.103E+01 2.80E+01 1.30E+02 TG L14539-01 10/21/2008 Mn-54 -7.OOE+00 1.20E+01 5.30E+01 TG L14539-01 10/21/2008 Nb-95 1.90E+01 2.OOE+01 7.OOE+01 TG L14539-01 10/21/2008 Ru-103 3.OOE+01 1.30E+01 3.80E+01 TG L14539-01 10/21/2008 Ru-106 1.001E+02 1.1OE+02 3.90E+02 TG L14539-01 10/21/2008 Sb-124 0.00E+00 4.20E+01 1.80E+02 TG L14539-01 10/21/2008 Sb-125 3.60E+01 3.50E+01 1.20E+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 199

TYPE Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I TG L14539-01 10/21/2008 Se-75 2.OOE+01 1.30E+01 4.50E+01 TG TG TG L14539-01 10/21/2008 L14539-01 10/21/2008 L13958-02 5/27/2008 Zn-65 Zr-95 AcTh-228 3.60E+01

-1.00E+01 1.16E+02 4.40E+01 2.90E+01 6.80E+01 1.60E+02 1.20E+02 2.20E+02 I

TG TG TG L13958-02 5/27/2008 L13958-02 5/27/2008 L13958-02 5/27/2008 Ag-108m Ag-I lOm Ba-140 1.50E+01

-1.40E+01 3.90E+01 1.20E+01 2.30E+01 3.20E+OI 4.1OE+01 8.90E+01 1.1 OE+02 I

TG L13958-02 5/27/2008 Be-7 -5.OOE+01 1.30E+02 4.90E+02 TG TG TG L13958-02 5/27/2008 L13958-02 5/27/2008 L13958-02 5/27/2008 Ce-141 Ce- 144 Co-57 1.00E+00 5.70E+01 5.80E+00 1.70E+01 5.20E+01 6.40E+00 5.80E+01 1.80E+02 2.20E+01 I

5.50E+01 TG TG TG L13958-02 5/27/2008 L13958-02 5/27/2008 L13958-02 5/27/2008 Co-58 Co-60 Cr-51

-1.00E+01 6.OOE+00 0.OOE+00 1.30E+01 1.60E+01 1.1 OE+02 6.OOE+01 3.80E+02 I

TG L13958-02 5/27/2008 Cs-134 2.10E+01 1.00E+01 3.70E+01 TG TG TG L13958-02 5/27/2008 L13958-02 5/27/2008 L13958-02 5/27/2008 Cs-137 Fe-59 1-131 1.30E+01

-4.90E+01 1.70E+00 1.60E+01 3.50E+01 4.80E+00 5.50E+01 1.50E+02 2.60E+01 I

TG L13958-02 5/27/2008 1-131 -5.OOE+00 1.90E+01 7.20E+01 TG L13958-02 5/27/2008 K-40 4.56E+03 5.10E+02 9. 1OE+02 TG L13958-02 5/27/2008 La-140 3.90E+01 3.20E+01 1.1OE+02 TG L13958-02 5/27/2008 Mn-54 -3.OOE+00 1.50E+01 5.80E+01 TG L13958-02 5/27/2008 Nb-95 -4.60E+01 2.10E+01 8.70E+01 TG L13958-02 5/27/2008 Ru-103 1.IOE+01 1.40E+01 5.OOE+01 TG L13958-02 5/27/2008 Ru-106 -4.OOE+01 1.40E+02 5.20E+02 TG L13958-02 5/27/2008 Sb-124 -1.20E+01 3.90E+0 1 1.70E+02 TG L13958-02 5/27/2008 Sb-125 5.OOE+00 3.60E+01 1.30E+02 TG L13958-02 5/27/2008 Se-75 I. IOE+01 1.40E+01 5.OOE+01 TG L13958-02 5/27/2008 Zn-65 6.90E+01 8.1OE+01 2.80E+02 TG L13958-02 5/27/2008 Zr-95 L4.IOE+o1 2.60E+01 1.1 OE+02 TG LI14034-02 6/17/2008 AcTh-228 5.OOE+01 4.10E+01 1.40E+02 TG TG LI14034-02 6/17/2008 L14034-02 6/17/2008 Ag-108m Ag-I 10m

-1.03 E+01 L5.OOE+00 5.50E+01

8. 1OE+00 1.30E+01 3.30E+01 3.OOE+01 4.90E+01 1.1 OE+02 I

TG L14034-02 6/17/2008 Ba-140 TG TG TG L14034-02 6/17/2008 L14034-02 6/17/2008 L14034-02 6/17/2008 Be-7 Ce-I141 Ce-I144 8.40E+02 2.40E+01 0.OOE+00 1.50E+02 1.70E+01 4.40E+OI

4. 1OE+02 5.60E+01 1.50E+02 U

TG L14034-02 6/17/2008 Co-57 3.40E+00 6.OOE+00 2.OOE+01 TG TG L14034-02 6/17/2008 L14034-02 6/17/2008 Co-58 Co-60

-7 OOE+00 1.10E+01 5.OOE+01 1.1OE+01 1.1OE+01 1.20E+02 4.30E+01 3.90E+OI 4.20E+02 I

TG LI4034-02 6/17/2008 Cr-51 TG TG TG L14034-02 6/17/2008 L14034-02 6/17/2008 L14034-02 6/17/2008 Cs-134 Cs-137 Fe-59 9.70E+00 1-2.OOE+01

-4.OOE+00

9. 1OE+00 1.20E+01 3.OOE+01 3.60E+01 4.50E+01 1.1OE+02 I

TG L14034-02 6/17/2008 1-131 -3.83E+00 5.90E-01 4.30E+01 TG TG L14034-02 6/17/2008 L14034-02 6/17/2008 1-131 K-40 2.40E+01 2.93E+03 5.50E+01 5.40E+OI 2.60E+02 3.30E+01 1.90E+02 5.1OE+02 1.1 OE+02

i TG L14034-02 6/17/2008 La-140 TG TG TG L14034-02 6/17/2008 L14034-02 6/17/2008 L14034-02 6/17/2008 Mn-54 Nb-95 Ru-103 5.OOE+00 8.OOE+00

-1.00E+01 1.1OE+01 1.40E+01 1.20E+01 3.80E+01 4.80E+01 4.40E+01 I

TG L14034-02 6/17/2008 Ru-106 !ý-9.00E+00 9.40E+01 3.40E+02 TG L14034-02 6/17/2008 Sb-124 I 1.60E+01 2.50E+01 8.90E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 200

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG L14034-02 6/17/2008 Sb-125 -2.40E+01 2.50E+01 9.10E+01 TG LI14034-02 6/17/2008 Se-75 -8.OOE+00 1.10E+01 4.1OE+01 TG L14034-02 6/17/2008 Zn-65 -3.80E+01 2.70E+01 1.00E+02 TG L14034-02 6/17/2008 Zr-95 4.20E+01 2.1OE+01 6.90E+01 TG LI14170-02 7/22/2008 AcTh-228 -6.60E+01 5.20E+01 2. IOE+02 TG L14170-02 7/22/2008 Ag- 108m 0.00E+00 1.10E+01 3.80E+01 TG L14170-02 7/22/2008 Ag-1 10m 1.20E+01 1.60E+01 5.70E+01 TG L14170-02 7/22/2008 Ba-140 -3.80E+01 2.50E+01 1.20E+02 TG L14170-02 7/22/2008 Be-7 5.70E+02 1.70E+02 5.OOE+02 TG L14170-02 7/22/2008 Ce-I141 -8.OOE+00 1.50E+01 5.20E+01 TG L14170-02 7/22/2008 Ce-144 -2.40E+01 5.10E+01 1.80E+02 TG L14170-02 7/22/2008 Co-57 5.OOE+00 6.1OE+00 2.1OE+01 TG L14170-02 7/22/2008 Co-58 4.OOE+00 1.1 OE+01 4.10E+01 TG L14170-02 7/22/2008 Co-60 9.OOE+00 1.50E+01 5.40E+01 TG L14170-02 7/22/2008 Cr-51 5.OOE+01 1.30E+02 4.40E+02 TG L14170-02 7/22/2008 Cs-134 1.10E+01 1.00E+01 4.30E+01 TG L14170-02 7/22/2008 Cs-137 -1.30E+01 1.40E+01 5.40E+01 TG L14170-02 7/22/2008 Fe-59 5.00E+00 3.OOE+01 1.1OE+02 TG L14170-02 7/22/2008 1-131 -4.99E+00 8.50E-01 4.90E+01 TG L14170-02 7/22/2008 1-131 -4.50E+01 3.20E+01 1.20E+02 TG L14170-02 7/22/2008 K-40 2.43E+03 3.50E+02 8.OOE+02 TG L14170-02 7/22/2008 La-140 -3.80E+01 2.50E+01 1.20E+02 TG L14170-02 7/22/2008 Mn-54 1.30E+01 1.30E+01 4.40E+01 TG L14170-02 7/22/2008 Nb-95 -8.OOE+00 1.50E+01 5.90E+01 TG L14170-02 7/22/2008 Ru-103 8.OOE+00 1.30E+01 4.60E+01 TG L14170-02 7/22/2008 Ru-106 -I.50E+02 1.1 OE+02 4.30E+02 TG L14170-02 7/22/2008 Sb-124 -9.OOE+00 3.80E+01 1.50E+02 TG L14170-02 7/22/2008 Sb-125 -4.OOE+00 3.20E+01 1.1OE+02 TG L14170-02 7/22/2008 Se-75 3.OOE+00 1.10E+01 4.OOE+01 TG L14170-02 7/22/2008 Zn-65 -7.70E+01 3.OOE+01 1.30E+02 TG L14170-02 7/22/2008 Zr-95 8.OOE+00 2.10E+01 7.60E+01 TG L14318-02 8/26/2008 AcTh-228 9.40E+01 5.80E+01 1.90E+02 TG L14318-02 8/26/2008 Ag-108m 5.OOE+00 1.10E+01 3.80E+01 TG L14318-02 8/26/2008 Ag-110m -3.70E+0I 1.80E+01 7.90E+01 TG L14318-02 8/26/2008 Ba-140 0.OOE+00 2.80E+01 1.20E+02 TG L14318-02 8/26/2008 Be-7 5.26E+03 3.1OE+02 4.60E+02 TG L14318-02 8/26/2008 Ce-I141 -4.90E+01 2.80E+01 1.00E+02 TG L14318-02 8/26/2008 Ce-144 2.00E+01 4.50E+01 1.60E+02 TG L14318-02 8/26/2008 Co-57 2.60E+00 5.50E+00 1.90E+01 TG L14318-02 8/26/2008 Co-58 -3.20E+01 1.60E+01 6.80E+01 TG L14318-02 8/26/2008 Co-60 -4.OOE+00 1.60E+01 6.30E+01 TG L14318-02 8/26/2008 Cr-51 -9.OOE+01 1.20E+02 4.40E+02 TG L14318-02 8/26/2008 Cs-134 -1.001E+01 1.00E+01 5.OOE+01 TG L14318-02 8/26/2008 Cs-137 -8.00E+00 1.20E+01 4.90E+0I TG L14318-02 8/26/2008 Fe-59 1.30E+01 3.20E+01 1.20E+02 TG L14318-02 8/26/2008 1-131 -1.00E+01 1.60E+00 4.50E+01 TG L14318-02 8/26/2008 1-131 -5.50E+01 3.50E+01 1.40E+02 TG L14318-02 8/26/2008 K-40 3.31 E+03 3.90E+02 6.90E+02 TG L14318-02 8/26/2008 La-140 0.OOE+00 2.80E+01 1.20E+02 TG L14318-02 8/26/2008 Mn-54 -3.OOE+00 1.30E+01 5.OOE+01 TG L14318-02 8/26/2008 Nb-95 -3.60E+01 1.90E+01 7.90E+01 TG L14318-02 8/26/2008 Ru-103 6.OOE+00 1.50E+01 5.20E+01 TG L14318-02 8/26/2008 Ru-106 2.1OE+02 1.20E+02 4.OOE+02

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 201

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE END 'CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG TG L14318-02 L14318-02 8/26/2008 8/26/2008 Sb-124 Sb-125 4.30E+01

,3.70E+01 3.40E+01 3.20E+01 1.60E+02 1.10E+02 I

TG L14318-02 8/26/2008 Se-75 11.00E+00 1.30E+01 4.70E+0 1 TG TG L14318-02 L14318-02 8/26/2008 8/26/2008 Zn-65 Zr-95

-6.701E+01

-3.001E+00 3.40E+01 2.70E+01 1.50E+02 I.00E+02 I

TG L14423-02 9/25/2008 AcTh-228 16.10E+01 6.20E+01 2.20E+02 TG TG TG L14423-02 L14423-02 L14423-02 9/25/2008 9/25/2008 9/25/2008 Ag-108m Ag-1 10m Ba-140 I1.30E+01 0.00E+00 1.20E+01 1.20E+01 2.30E+01 3.10E+01 4.00E+01 9.30E+01 1.30E+02 I

TG L14423-02 9/25/2008 Be-7 4.101E+02 2.OOE+02 6.30E+02 TG TG L1-4423-02 L14423-02 9/25/2008 9/25/2008 Ce- 141 Ce- 144

-m7.00E+00 13.60E+01 1.50E+01 6.30E+01 5.70E+01 2.20E+02 2.70E+01 I

TG L14423-02 9/25/2008 Co-57 '6.20E+00 7.80E+00 TG TG TG L14423-02 L14423-02 L14423-02 9/25/2008 9/25/2008 9/25/2008 Co-58 Co-60 Cr-51

-1.30E+01

-,2.OOE+00

-2.30E+02 1.40E+01 1.40E+01 1.50E+02 6.40E+0 1 6.40E+0 1

6. 1OE+02 I

TG LI4423-02 9/25/2008 Cs-134 3 .00+00 1.10E+01 5.90E+01 TG TG L14423-02 L14423-02 9/25/2008 9/25/2008 Cs-137 Fe-59

-7.00E+00

2. 10E+01 1.90E+01 3.OOE+01 1.30E+00 7.60E+01 1.20E+02 5.90E+01 I

TG L14423-02 9/25/2008 1-131 -7.20E+00 TG TG TG L14423-02 L14423-02 L14423-02 9/25/2008 9/25/2008 9/25/2008 1-131 K-40 La-140

-4.50E+01 5.453+03

1.20E+01 2.80E+01 6.20E+02 3.10E+01 1.1OE+02 7.50E+02 1.30E+02 I

TG L14423-02 9/25/2008 Mn-54 4 1.60E+01 1.501E+01 6.80E+01 TG TG L14423-02 L14423-02 9/25/2008 9/25/2008 Nb-95 Ru-103 9.OOE+00 7

7T.00E+00 1.70E+01 1.60E+01 6.50E+01 6.20E+01 I

TG L14423-02 9/25/2008 Ru- 106 i1.30E+02 1.70E+02 6.90E+02 TG TG TG L14423-02 L14423-02 LI4423-02 9/25/2008 9/25/2008 9/25/2008 Sb-124 Sb-125 Se-75 1.80E+01 5.40E+01

-6.00E+00 3.10E+01 4.20E+01 1.40E+01 1.30E+02 1.40E+02 5.50E+01 I

TG LI4423-02 9/25/2008 Zn-65 1.10E+01 2.90E+01 1.20E+02 TG TG L14423-02 L14539-02 9/25/2008 10/21/2008 Zr-95 AcTh-228

-I .40E+01 1.20E+02 0.OOE+00 2.70E+01 6.OOE+01 9.80E+00 1.101E+02 1.90E+02 3.60E+01 I

TG L14539-02 10/21/2008 Ag-108m TG TG TG L14539-02 L14539-02 L14539-02 10/21/2008 10/21/2008 10/21/2008 Ag-i I10m Ba-140 Be-7 r7.OOE+00

-2.20E+01 l.47E+03 1.70E+01 2.60E+01 2.OOE+02 6.70E+01 1.20E+02 4.80E+02

I TG L14539-02 10/21/2008 Ce-I141 L3.00E+01 1.40E+01 5.50E+01 TG TG L14539-02 L14539-02 10/21/2008 10/21/2008 Ce-144 Co-57 8.80E+01 I1.20E+00 5.30E+01 6.20E+00 1.70E+02 2.20E+01 I TG L14539-02 10/21/2008 Co-58 2.OOE+00 1.30E+01 4.70E+01 TG L14539-02 10/21/2008 Co-60 I6.OOE+00 1.80E+01 6.80E+01 TG L14539-02 10/21/2008 Cr-51 L6.00E+01 1.1OE+02 4.OOE+02 TG L14539-02 10/21/2008 Cs-134 4.OOE+00 1.20E+01 5.90E+01 TG L14539-02 10/21/2008 Cs-137 1.30E+01 1.30E+01 4.60E+0 1 TG L14539-02 10/21/2008 Fe-59 -2.40E+01 2.70E+01 1.20E+02 TG L14539-02 10/21/2008 1-131 :2.60E+01 2.40E+0 1 8.I0E+01 TG L14539-02 10/21/2008 1-131 -3.001E+00 1.00E+01 5.20E+01 TG L14539-02 10/21/2008 K-40 2.32E+03 3.50E+02 7.50E+02

TG L14539-02 10/21/2008 La- 140 -2.20E+01 2.60E+01 1.20E+02 TG L14539-02 10/21/2008 Mn-54 -5.00E+00 1.30E+01 5.00E+01 TG L14539-02 10/21/2008 Nb-95 -1.30E+01 1.50E+01 5.90E+01 TG L14539-02 10/21/2008 Ru-103 i 9.OOE+00 1.20E+01 4.30E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 202 I I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG 9 L14539-02 10/21/2008 Ru-106 -6.OOE+01 1.20E+02 4.60E+02 TG 9 L14539-02 10/21/2008 Sb-124 -2.OOE+01 3.20E+01 1.40E+02 TG 9 L14539-02 '10/21/2008 Sb-125 1.70E+01 3.OOE+01 1.1OE+02 TG 9 L14539-02 10/21/2008 Se-75 -4.OOE+00 1.1 OE+0 I 4.OOE+01 TG 9 L14539-02 10/21/2008 Zn-65 -8.OOE+01 3.70E+01 1.60E+02 TG 9 L14539-02 10/21/2008 Zr-95 2.OOE+00 1.80E+01 7.1OE+0I TG 10 L13958-03 5/27/2008 AcTh-228 5.30E+01 4.50E+01 1.50E+02 TG 10 L13958-03 5/27/2008 Ag-108m -3.90E+00 8.80E+00 3.20E+01 TG 10 L13958-03 5/27/2008 Ag-110m -2.80E+01 1.50E+01 5.70E+01 TG 10 L13958-03 5/27/2008 Ba-140 2.OOE+01 1.60E+01 5.60E+01 TG 10 LI3958-03 5/27/2008 Be-7 2.35E+02 9.40E+01 3.OOE+02 TG 10 L13958-03 5/27/2008 Ce-I141 7.OOE+00 1.50E+01 5.OOE+01 TG 10 L13958-03 5/27/2008 Ce-144 -1.50E+01 5.40E+01 1.90E+02 TG 10 L13958-03 5/27/2008 Co-57 -2.30E+00 6.70E+00 2.30E+01 TG 10 L13958-03 5/27/2008 Co-58 -2.20E+01 1.10E+01 4.40E+01 TG 10 L13958-03 5/27/2008 Co-60 -5.OOE+00 1.20E+01 4.40E+01 TG 10 L13958-03 5/27/2008 Cr-51 -1.80E+02 1.00E+02 3.70E+02 TG 10 L13958-03 5/27/2008 Cs-134 2.OOE+00 1.10E+01 3.90E+01 TG 10 L13958-03 5/27/2008 Cs-137 2.00E+00 1.80E+01 6.30E+01 TG 10 L13958-03 5/27/2008 Fe-59 1.30E+01 2.30E+01 1.20E+02 TG 10 L13958-03 5/27/2008 1-131 1.09E+01 8.OOE+00 2.50E+01 TG 10 L13958-03 5/27/2008 1-131 9.OOE+00 1.80E+01 6.30E+01 TG 10 L13958-03 5/27/2008 K-40 2.77E+03 2.60E+02 '5.30E+02 TG 10 L13958-03 5/27/2008 La-140 2.OOE+01 1.60E+01 5.60E+01 TG 10 LI3958-03 5/27/2008 Mn-54 -I.30E+01 I.00E+01 4.OOE+01 TG 10 L13958-03 5/27/2008 Nb-95 -2.20E+01 2.OOE+01 7.OOE+01 TG 10 L13958-03 5/27/2008 Ru-I103 0.OOE+00 1.00E+01 3.60E+01 TG 10 L13958-03 5/27/2008 Ru- 106 -6.60E+01 9.20E+01 3.40E+02 TG 10 L13958-03 5/27/2008 Sb-124 5.OOE+00 2.1 OE+0 1 7.80E+01 TG 10 LI3958-03 5/27/2008 Sb-125 4.30E+01 3.10E+01 1.00E+02 TG 10 LI3958-03 5/27/2008 Se-75 -2.OOE+00 1.20E+01 4.20E+0 I TG 10 L13958-03 5/27/2008 Zn-65 9.70E+01 5.50E+01 1.80E+02 TG 10 LI13958-03 5/27/2008 Zr-95 -2.90E+01 2.OOE+01 7.50E+01 TG 10 L14034-03 6/17/2008 AcTh-228 0.OOE+00 4.80E+01 1.70E+02 TG 10 L14034-03 6/17/2008 Ag-108m 7.OOE+00 1.10E+01 3.70E+01 TG 10 L14034-03 6/17/2008 Ag-1 10m -3.60E+01 1.80E+01 7.50E+01 TG 10 L14034-03 6/17/2008 Ba-140 1.20E+01 4.30E+01 1.60E+02 TG 10 LI4034-03 6/17/2008 Be-7 8.70E+02 2.OOE+02 5.70E+02 TG 10 L14034-03 6/17/2008 Ce-I141 3.10E+01 2.30E+01 7.50E+01 TG 10 L14034-03 6/17/2008 Ce-144 -9.OOE+00 6.70E+01 2.40E+02 TG 10 L14034-03 6/17/2008 Co-57 -2.30E+00 7.90E+00 2.80E+01 TG 10 L14034-03 6/17/2008 Co-58 -4.OOE+00 1.50E+01 5.60E+01 TG 10 L14034-03 6/17/2008 Co-60 1.50E+01 1.40E+01 4.80E+01 TG 10 L14034-03 6/17/2008 Cr-51 - 1.1OE+02 1.70E+02 6.OOE+02 TG 10 L14034-03 6/17/2008 Cs-134 8.OOE+00 1.20E+01 4.80E+01 TG 10 L14034-03 6/17/2008 Cs-137 -1.30E+01 1.50E+01 5.50E+01 TG 10 L14034-03 6/17/2008 Fe-59 -4.OOE+01 4.10E+01 1.60E+02 TG 10 L14034-03 6/17/2008 1-131 -9.80E+01 7.80E+01 2.90E+02 TG 10 L14034-03 6/17/2008 1-131 -4.05E+00 6.20E-01 4.60E+01 TG 10 L14034-03 6/17/2008 K-40 3.36E+03 3.30E+02 5.80E+02 TG 10 L14034-03 6/17/2008 La-140 1.20E+01 4.30E+01 1.60E+02 TG 10 L14034-03 6/17/2008 Mn-54 2.50E+01 1.40E+01 4.50E+01 TG 10 L14034-03 6/17/2008 Nb-95 -5.OOE+00 1.90E+01 6.90E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 203

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG TG L14034-03 L14034-03 6/17/2008 6/17/2008 Ru-103 Ru-106

-i1.50E+01

-9.OOE+01 1.80E+01 1.30E+02 6.70E+01 4.80E+02 U

TG L14034-03 6/17/2008 Sb-124 -2.50E+01 3.80E+01 1.50E+02 TG TG L14034-03 L14034-03 6/17/2008 6/17/2008 Sb-125 Se-75 2.10E+01 2.60E+01 3.90E+01 1.40E+01 1.30E+02 4.70E+01 I

TG L14034-03 6/17/2008 Zn-65 -'8.IOE+01 3.50E+01 1.40E+02 TG TG TG L14034-03 LI14170-03 L14170-03 6/17/2008 7/22/2008 7/22/2008 Zr-95 AcTh-228 Ag-108m 15.00E+01 1.30E+01 9.OOE+00 2.70E+01 5.60E+01 1.30E+01 8.60E+01

2. 1OE+02 4.50E+01 I

TG L14170-03 7/22/2008 Ag-I 10m 0.00E+00 2.OOE+01 7.70E+0 1 TG TG L14170-03 L14170-03 7/22/2008 7/22/2008 Ba-140 Be-7

-'2.80E+01 i8.40E+02 4.10E+01

2. 1OE+02 1.70E+02 5.90E+02

I TG L14170-03 7/22/2008 Ce- 141 1I.30E+01 2.20E+01 7.90E+01 TG TG TG L14170-03 L14170-03 L14170-03 7/22/2008 7/22/2008 7/22/2008 Ce-144 Co-57 Co-58

.2.20E+01 71.80E+00 i 1.50E+01 7.40E+01 9.60E+00 1.60E+01 2.70E+02 3.40E+01 5.70E+01 I

TG L14170-03 7/22/2008 Co-60 12.OOE+01 1.60E+01 5.60E+01 TG TG L14170-03 LI14170-03 7/22/2008 7/22/2008 Cr-51 Cs-134 i2.00E+01

-6.OOE+00 5.30E+01 1.60E+02 1.1OE+0 1 2.00E+01 5.70E+02 5.60E+01 5.80E+01 I

TG L14170-03 7/22/2008 Cs-137 TG TG TG L14170-03 L14170-03 L14170-03 7/22/2008 7/22/2008 7/22/2008 Fe-59 1-131 1-131 6.20E+0 1 75.12E+00 S1.70E+0 I 3.30E+01 8.80E-01 4.30E+01 1.001E+02 2.30E+01 1.50E+02 I

TG L14170-03 7/22/2008 K-40 2.34E+03 3.80E+02 8.50E+02 TG TG L14170-03 L14170-03 7/22/2008 7/22/2008 La-140 Mn-54

-2.80E+01

!2.20E+01 4.1OE+01 1.60E+01 1.70E+02 5.50E+01 I

TG L14170-03 7/22/2008 Nb-95 ,6.OOE+00 1.60E+01 6.30E+01 TG TG TG L14170-03 L14170-03 L14170-03 7/22/2008 7/22/2008 7/22/2008 Ru-103 Ru-106 Sb-124

-2.OOE+00 2.00E+01

-4.10E+01 1.40E+01 1.60E+02 3.60E+01 5.30E+01 5.70E+02 1.70E+02 I

TG L14170-03 7/22/2008 Sb-125 .7.90E+0 I 4.50E+01 1.80E+02 TG TG L14170-03 L14170-03 7/22/2008 7/22/2008 Se-75 Zn-65 i1l.20E+01

,4.80E+01 1.60E+01 3.70E+01 2.80E+01 6.20E+01 1.30E+02 1.1OE+02 I

TG L14170-03 7/22/2008 Zr-95 -5.OOE+00 TG TG TG L14318-03 L14318-03 L14318-03 8/26/2008 8/26/2008 8/26/2008 AcTh-228 Ag-108m Ag-1 10m

-3.OOE+01

,2.OOE+00 11.70E+01 6.30E+01 1.10E+01 2.40E+0 1 2.40E+02 4.20E+01 8.40E+01 I

TG L14318-03 8/26/2008 Ba-140 1.20E+01 3.90E+01 1.60E+02 TG TG L14318-03 L14318-03 8/26/2008 8/26/2008 Be-7 Ce- 141 1.85E+03 1.80E+01 2.60E+02 2.OOE+01 6.50E+02 6.60E+0 I 2.50E+02 I

TG L14318-03 8/26/2008 Ce- 144 -6.30E+01 6.80E+01 TG L14318-03 8/26/2008 Co-57 5.60E+00 7.1OE+00 2.40E+01 i-4.50E+01 TG L14318-03 8/26/2008 Co-58 1.80E+01 7.90E+0 1 TG L14318-03 8/26/2008 Co-60 -3.70E+01 2. 1OE+01 9.30E+01 TG L14318-03 8/26/2008 Cr-51 0.OOE+00 1.50E+02 5.40E+02

.-2.OOE+00 TG L14318-03 8/26/2008 Cs-134 1.1OE+0 1 5.10E+01 TG L14318-03 8/26/2008 Cs-137 ,-1.50E+01 1.80E+01 7. 1OE+01 TG L14318-03 8/26/2008 Fe-59 -4.80E+01 3.90E+01 1.60E+02 TG L14318-03 8/26/2008 1-131 1.80E+01 1.60E+01 5.50E+01 TG L14318-03 8/26/2008 1-131 6.OOE+00 4.60E+01 1.70E+02 TG L14318-03 8/26/2008 K-40 ,2.91E+03 4.30E+02 9.OOE+02 TG L14318-03 8/26/2008 La- 140 11.20E+01 3.90E+01 1.60E+02 TG L14318-03 8/26/2008 Mn-54 2.00E+00 1.40E+01 5.20E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 204

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG 10 L14318-03 8/26/2008 Nb-95 -2.50E+01 1.80E+01 7.70E+01 TG 10 L14318-03 8/26/2008 Ru-103 -7.OOE+00 1.70E+01 6.50E+01 TG 10 L14318-03 8/26/2008 Ru-106 -4.OOE+01 1.40E+02 5.50E+02 TG 10 L14318-03 8/26/2008 Sb-124 2.60E+01 4.80E+01 1.80E+02 TG 10 L14318-03 8/26/2008 Sb-125 -1.001E+01 3.60E+01 1.30E+02 TG 10 L14318-03 8/26/2008 Se-75 8.OOE+00 1.50E+01 5.30E+01 TG 10 L14318-03 8/26/2008 Zn-65 3.00E+01 3.60E+01 1.30E+02 TG 10 L14318-03 8/26/2008 Zr-95 5.90E+01 2.70E+01 8.20E+01 TG 10 L14423-03 9/25/2008 AcTh-228 -3.50E+01 5.80E+01 2.40E+02 TG 10 L14423-03 9/25/2008 Ag- 108m 1.20E+01 1.20E+01 4.30E+01 TG 10 L114423-03 9/25/2008 Ag-1 1m -1.60E+01 2.10E+01 9.20E+01 TG 10 L14423-03 9/25/2008 Ba-140 -2.20E+01 3.I OE+01 1.50E+02 TG 10 L14423-03 9/25/2008 Be-7 1.1 8E+03 2.1OE+02 4.60E+02 TG 10 L14423-03 9/25/2008 Ce-141 0.OOE+00 1.30E+01 4.90E+01 TG 10 L14423-03 9/25/2008 Ce-144 -5.40E+01 5.1OE+01 2.OOE+02 TG 10 L14423-03 9/25/2008 Co-57 -1.30E+00 6.30E+00 2.40E+01 TG 10 L14423-03 9/25/2008 Co-58 -2.50E+01 1.40E+01 6.70E+01 TG 10 L14423-03 9/25/2008 Co-60 9.OOE+00 2.00E+01 7.80E+01 TG 10 L14423-03 9/25/2008 Cr-51 -3.30E+02 9.60E+01 4.60E+02 TG 10 L14423-03 9/25/2008 Cs-134 4.00E+00 1.001E+01 4.60E+01 TG 10 L14423-03 9/25/2008 Cs-137 -I.10E+01 1.60E+01 6.60E+01 TG 10 L14423-03 9/25/2008 Fe-59 -3.OOE+01 3.OOE+01 1.40E+02 TG 10 L14423-03 9/25/2008 1-131 1.70E+01 1.60E+01 5.40E+01 TG 10 L14423-03 9/25/2008 1-131 -7. 10E+00 1.20E+00 5.80E+01 TG 10 L14423-03 9/25/2008 K-40 3.32E+03 5.1OE+02 9.1OE+02 TG 10 L14423-03 9/25/2008 La-140 -2.20E+0 I 3. 1OE+01 1.50E+02 TG 10 L14423-03 9/25/2008 Mn-54 2.60E+01 1.30E+01 4.OOE+01 TG 10 L14423-03 9/25/2008 Nb-95 1.40E+01 1.50E+01 5.40E+01 TG 10 L14423-03 9/25/2008 Ru-103 -1.20E+01 1.20E+01 5.20E+01 TG 10 L14423-03 9/25/2008 Ru-106 -1.50E+02 1.00E+02 4.80E+02 TG 10 L14423-03 9/25/2008 Sb-124 0.OOE+00 4.80E+01 2.OOE+02 TG 10 L14423-03 9/25/2008 Sb-125 4.90E+01 3.50E+01 1.20E+02 TG 10 L14423-03 9/25/2008 Se-75 -I.10E+01 1.50E+01 5.70E+01 TG 10 L14423-03 9/25/2008 Zn-65 -1.00E+01 2.30E+01 1.10E+02 TG 10 L14423-03 9/25/2008 Zr-95 1.50E+01 2.60E+01 9.90E+01 TG 10 L14539-03 10/21/2008 AcTh-228 8. IOE+0I 4.50E+01 1.50E+-02 TG 10 L14539-03 10/21/2008 Ag-108m -1.60E+00 9.40E+00 3.50E+01 TG 10 L14539-03 10/21/2008 Ag-I 10m 1.IOE+01 1.70E+01 5.90E+01 TG 10 L14539-03 10/21/2008 Ba-140 -6.OOE+00 2.10E+01 8.80E+01 TG 10 L14539-03 10/21/2008 Be-7 1.74E+03 2.1OE+02 5. 1OE+02 TG 10 L14539-03 10/21/2008 Ce-I141 -1.00E+00 1.60E+01 5.80E+01 TG 10 L14539-03 10/21/2008 Ce-144 -3.30E+01 5.80E+01 2.1OE+02 TG 10 L14539-03 10/21/2008 Co-57 -8.20E+00 7.50E+00 2.80E+01 TG 10 L14539-03 10/21/2008 Co-58 -1.80E+01 1.20E+01 5.1OE+01 TG 10 L14539-03 10/21/2008 Co-60 -9.OOE+00 1.20E+01 5.20E+01 TG 10 L14539-03 10/21/2008 Cr-51 5.OOE+01 9.50E+01 3.40E+02 TG 10 L14539-03 10/21/2008 Cs-134 4.OOE+00 1.00E+01 5.OOE+01 TG 10 L1,4539-03 10/21/2008 Cs-137 4.20E+01 1.60E+01 4.80E+01 TG 10 L14539-03 10/21/2008 Fe-59 -9.OOE+00 2.40E+01 9.50E+01 TG 10 L14539-03 10/21/2008 1-131 -2.70E+00 9.90E+00 4.90E+01 TG 10 L14539-03 10/21/2008 1-131 -2.80E+01 2.50E+01 9.60E+0i TG 10 L14539-03 10/21/2008 K-40 1.84E+03 2.90E+02 6.30E+02 TG 10 L14539-03 10/21/2008 La-140 -6.OOE+00 2.10E+01 8.80E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 205

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I TG TG TG 10 10 10 L14539-03 L14539-03 L14539-03 10/21/2008 10/21/2008 10/21/2008 Mn-54 Nb-95 Ru-103

,4.OOE+00 25.00E+00 1.50E+01 1.10E+01 1.40E+01 1.20E+01 3.90E+01 5.40E+01 4.10E+01 I

TG 10 L14539-03 10/21/2008 Ru-106 ,2.OOE+01 1.1OE+02 4.OOE+02 TG TG TG 10 10 10 L14539-03 L14539-03 L14539-03 10/21/2008 10/21/2008 10/21/2008 Sb-124 Sb-125 Se-75 8.OOE+00 2.30E+01

-6.OOE+00 2.90E+01 3.20E+01 1.20E+01 1.1OE+02 1.1OE+02 4.60E+01 I

TG TG 10 10 L14539-03 L14539-03 10/21/2008 10/21/2008 Zn-65 Zr-95 2.60E+0I II10E+01 3.60E+01 2.OOE+01 1.30E+02 7.1OE+01 U I

I I

I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

206 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

WG L13693-01 3/12/2008 AcTh-228 1.60E+01 7.40E+00 2.40E+01 WG L13693-01 3/12/2008 Ag-108m 1.80E+00 1.30E+00 4.20E+00 WG L13693-01 3/12/2008 Ag-I 10m -4.OOE-01 2.30E+00 8.20E+00 WG L13693-01 3/12/2008 Ba-140 -2.20E+00 3.70E+00 1.40E+01 WG L13693-01 3/12/2008 Be-7 -2.80E+01 1.20E+01 4.80E+01 WG L13693-01 3/12/2008 Ce-141 -3.OOE+00 2.40E+00 8.40E+00 WG L13693-01 3/12/2008 Ce-144 2.20E+00 8.20E+00 2.80E+01 WG L13693-01 3/12/2008 Co-57 -I.60E+00 8.40E-01 3.OOE+00 WG L13693-01 3/12/2008 Co-58 1.1OE+00 1.60E+00 5.70E+00 WG L13693-01 3/12/2008 Co-60 -8.OOE-01 1.90E-+00 7.30E+00 WG L13693-01 3/12/2008 Cr-51 1.50E+01 1.20E+01 3.90E+01 WG L13693-01 3/12/2008 Cs-134 -7.OOE-01 1.1OE+00 5.20E+00 WG L13693-01 3/12/2008 Cs-137 -3.OOE-01 1.50E+00 5.50E+00 WG L13693-01 3/12/2008 Fe-59 4.20E+00 3.1OE+00 1.001E+01 WG L13693-01 3/12/2008 Gross Beta 5.80E+00 1.20E+00 3.20E+00 WG L13693-01 3/12/2008 H-3 -6.70E+02 3.40E+02 1. IOE+03 WG L13693-01 3/12/2008 1-131 3.40E+00 2.70E+00 9. 1OE+00 WG L13693-01 3/12/2008 K-40 -1.001E+01 2.70E+01 9.90E+01 WG L13693-01 3/12/2008 La-140 -2.20E+00 3.70E+00 1.40E+01 WG L13693-01 3/12/2008 Mn-54 5.00E-01 1.50E+00 5.40E+00 WG L13693-01 3/12/2008 Nb-95 -1.00E-01 2.1OE+00 7.50E+00 WG L13693-01 3/12/2008 Ru-103 -1.20E+00 1.60E+00 5.80E+00 WG L13693-01 3/12/2008 Ru-106 -9.OOE+00 1.30E+01 5.OOE+01 WG L13693-01 3/12/2008 Sb-124 -3.80E+00 4.50E+00 1.80E+01 WG L13693-01 3/12/2008 Sb-125 7.OOE-01 4.1OE+00 1.40E+01 WG L13693-01 3/12/2008 Se-75 6.OOE-01 1.60E+00 5.60E+00 WG L13693-01 3/12/2008 Zn-65 1.50E+00 7.1OE+00 2.40E+01 WG L113693-01 3/12/2008 Zr-95 -4.00E-01 2.60E+00 9.40E+00 WG L14013-01 6/5/2008 AcTh-228 5.60E+00 6.1OE+00 2.10E+01 WG L14013-01 6/5/2008 Ag-108m 1.40E+00 1.30E+00 4.40E+00 WG L14013-01 6/5/2008 Ag-110m 1.70E+00 2.1OE+00 7.30E+00 WG L14013-01 6/5/2008 Ba-140 -4.20E+00 3.80E+00 1.50E+01 WG L14013-01 6/5/2008 Be-7 -1.00E+00 1.20E+01 4.20E+01 WG L14013-01 6/5/2008 Ce-141 -9.OOE-01 2.20E+00 7.60E+00 WG L14013-01 6/5/2008 Ce-144 7.80E+00 7.90E+00 2.60E+01 WG L14013-01 6/5/2008 Co-57 2.50E-01 9.50E-01 3.20E+00 WG L14013-01 6/5/2008 Co-58 -1.70E+00 1.501E+00 5.60E+00 WG L14013-01 6/5/2008 Co-60 7.OOE-01 1.90E+00 6.70E+00 WG L14013-01 6/5/2008 Cr-51 5.OOE+00 1.501E+01 5.1OE+01 WG L14013-01 6/5/2008 Cs-134 I.OOE-01 1.1OE+00 5.40E+00 WG L14013-01 6/5/2008 Cs-137 3.60E+00 1.60E+00 5.20E+00 WG L14013-01 6/5/2008 Fe-59 2.30E+00 3.70E+00 1.30E+01 WG L14013-01 6/5/2008 Gross Beta 6.30E+00 1.20E+00 3.20E+00 WG L14013-01 6/5/2008 H-3 -3.20E+02 4.40E+02 1.30E+03 WG L14013-01 6/5/2008 1-131 -2.20E+00 3.80E+00 1.30E+01 WG L14013-01 6/5/2008 K-40 5.90E+01 2.40E+01 7.70E+01 WG L14013-01 6/5/2008 La-140 -4.20E+00 3.80E+00 1.50E+01 WG L14013-01 6/5/2008 Mn-54 -2.20E+00 1.50E+00 5.70E+00 WG L14013-01 6/5/2008 Nb-95 -8.OOE-01 1.90E+00 7.OOE+00 WG L14013-01 6/5/2008 Ru-103 -1.00E-01 1.70E+00 5.90E+00 WG L14013-01 6/5/2008 Ru-106 -7.OOE+00 1.40E+01 5.OOE+01 WG L14013-01 6/5/2008 Sb-124 4.40E+60 4.20E+00 1.50E+01 WG L14013-01 6/5/2008 Sb-125 2.20E+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 207

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I WG WG L14013-01 L14013-01 6/5/2008 6/5/2008 Se-75 Zn-65 1.20E+00 2.60E+00 1.60E+00 2.70E+00 5.30E+00 9.20E+00 I

WG L14013-01 6/5/2008 Zr-95 3.30E+00 2.60E+00 8.80E+00 WG WG L14366-01 L14366-01 9/11/2008 9/11/2008 AcTh-228 Ag-108mn 3.40E+00 2.40E+00 8.1OE+00 1.40E+00 2.80E+01 4.50E+00 I

WG L14366-01 9/11/2008 Ag-110m -2. 10E+00 2.30E+00 8.80E+00 WG WG WG L14366-01 L14366-01 L14366-01 9/11/2008 9/11/2008 9/11/2008 Ba-140 Be-7 Ce-141

-1.70E+00 1.10E+01

-5.80E+00 3.90E+00 1.40E+01 2.40E+00 1.50E+01 4.70E+01 8.70E+00 I

WG L14366-01 9/11/2008 Ce-144 1.50E+00 7.50E+00 2.60E+01 WG WG L14366-01 L14366-01 9/11/2008 9/11/2008 Co-57 Co-58

-5.40E-01

-3.OOE+00 9.40E-01 1.90E+00 3.30E+00 7.30E+00 I WG L14366-01 9/11/2008 Co-60 6.OOE-01 1.80E+00 6.50E+00 WG WG WG L14366-01 L14366-01 L14366-01 9/11/2008 9/11/2008 9/11/2008 Cr-51 Cs-134 Cs- 137

-6.OOE+00 3.20E+00 1.50E+00 1.40E+01 1.20E+00 1.50E+00 4.90E+01 5.20E+00 5.30E+00 I

WG L14366-01 9/11/2008 Fe-59 2.OOE+00 3.80E+00 1.30E+01 WG WG L14366-01 L14366-01 9/11/2008 9/11/2008 9/11/2008 Gross Beta H-3 6.OOE+00 1.50E+02 1.80E+00 1.30E+00 4.30E+02 2.70E+00 3.40E+00 1.30E+03 9.30E+00 I

WG L14366-01 1-131 WG WG WG L14366-01 L14366-01 L14366-01 9/11/2008 9/11/2008 9/11/2008 K-40 La-140 Mn-54

-2.80E+0 1

-1.70E+00

-6.OOE-01 2.50E+01 3.90E+00 1.70E+00 9.60E+01 1.50E+01 6.20E+00 I

WG L14366-01 9/11/2008 Nb-95 -2.70E+00 2.20E+00 8.20E+00 WG WG L14366-01 L14366-01 9/11/2008 9/11/2008 Ru-103 Ru-106

-1.20E+00 1.10E+01 1.60E+00 1.50E+01 3.70E+00 6.OOE+00 5.OOE+01 1.1OE+01 I

WG L14366-01 9/11/2008 Sb-124 8.90E+00 WG WG WG L14366-01 L14366-01 L14366-01 9/11/2008 9/11/2008 9/11/2008 Sb-125 Se-75 Zn-65 4.OOE-01

-3.OOE-01

-3.70E+00 4.70E+00 1.80E+00 8.40E+00 1.60E+01 6.40E+00 2.90E+01 I

WG L14366-01 9/11/2008 Zr-95 9.OOE-01 3.1OE+00 1.1OE+01 WG WG L14687-01 L14687-01 12/3/2008 12/3/2008 AcTh-228 Ag-108ni

-5.30E+00

-1.90E+00 1.1OE+00 7.OOE+00 1.30E+00 2.50E+00 2.50E+01 4.70E+00 8.80E+00 I

WG L14687-01 12/3/2008 Ag-110m WG WG WG L14687-01 L14687-01 L14687-01 12/3/2008 12/3/2008 12/3/2008 Ba-140 Be-7 Ce-141

-5.OOE-01 8.OOE+00 3.60E+00 3.20E+00 1.30E+01 2.80E+00 1.20E+01 4.50E+01 9.20E+00 I

WG L14687-01 12/3/2008 Ce-144 2.02E+01 8.OOE+00 2.60E+01 WG WG L14687-01 L14687-01 L14687-01 12/3/2008 12/3/2008 12/3/2008 Co-57 Co-58 Co-60

-4.90E-0 I

-2.20E+00

-3.OOE-01 9.70E-01 1.50E+00 1.80E+00 3.30E+00 5.60E+00 6.70E+00 I

WG WG WG WG L14687-01 L14687-01 L14687-01 12/3/2008 12/3/2008 12/3/2008 Cr-51 Cs-134 Cs-137

-1.50E+01

-2.1 OE+00 1.90E+00 1.50E+01 1.20E+00 1.70E+00 5.20E+01 5.80E+00 5.80E+00 I

WG L14687-01 12/3/2008 Fe-59 0.OOE+00 3.50E+00 1.20E+01 WG WG L14687-01 L14687-01 12/3/2008 12/3/2008 12/3/2008 Gross Beta H-3 7.OOE+00 1.00E+02

-2.20E+00 1.30E+00 4.50E+02 3.20E+00 3.30E+00 1.30E+03 1.10E+01 I

WG L14687-01 1-131 WG WG WG L14687-01 L14687-01 L14687-01 12/3/2008 12/3/2008 12/3/2008 K-40 La-140 Mn-54 2.20E+01

-5.OOE-01 2.OOE-01 2.40E+01 3.20E+00 1.60E+00 8.10E+01 1.20E+01 5.70E+00 I

WG L14687-01 12/3/2008 Nb-95 -1.80E+00 1.90E+00 7. 1OE+00 WG L14687-01 12/3/2008 Ru-103 -2.OOE-01 1.60E+00 5.60E+00 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 208

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

WG L14687-01 12/3/2008 Ru-106 -1.70E+01 1.60E+01 5.70E+01 WG L14687-01 12/3/2008 Sb-124 -7.OOE+00 4.30E+00 1.70E+01 WG L14687-01 12/3/2008 Sb-125 -6.20E+00 4. 1OE+00 1.50E+01 WG L14687-01 12/3/2008 Se-75 -2.20E+00 1.60E+00 5.80E+00 WG L14687-01 12/3/2008 Zn-65 1.85E+01 7.OOE+00 2.20E+0 I WG L14687-01 12/3/2008 Zr-95 -3.60E+00 2.60E+00 9.80E+00 WG 13 L13693-02 3/12/2008 AcTh-228 6.70E+00 8.60E+00 2.90E+0I WG 13 L13693-02 3/12/2008 Ag-108m -2.60E+00 1.50E+00 5.60E+00 WG 13 L13693-02 3/12/2008 Ag-I Om -4.50E+00 2.90E+00 1.IOE+01 WG 13 L13693-02 3/12/2008 Ba-140 1.40E+00 3.70E+00 1.40E+01 WG 13 L13693-02 3/12/2008 Be-7 6.OOE+00 1.40E+01 4.80E+01 WG 13 L13693-02 3/12/2008 Ce- 141 -6.80E+00 2.60E+00 9.50E+00 WG 13 L13693-02 3/12/2008 Ce- 144 4.OOE-01 9.OOE+00 3.1OE+01 WG 13 L13693-02 3/12/2008 Co-57 -1.50E+00 1.20E+00 4.20E+00 WG 13 L13693-02 3/12/2008 Co-58 -4.30E+00 1.90E+00 7.80E+00 WG 13 L13693-02 3/12/2008 Co-60 3.30E+00 1.60E+00 5.OOE+00 WG 13 L13693-02 3/12/2008 Cr-51 9.00E+00 1.60E+0I 5.50E+01 WG 13 L13693-02 3/12/2008 Cs-134 -2.OOE-01 2.OOE+00 7.30E+00 WG 13 L13693-02 3/12/2008 Cs-137 -8.OOE-01 2.OOE+00 7.40E+00 WG 13 LI3693-02 3/12/2008 Fe-59 -3.60E+00 4.20E+00 1.60E+01 WG 13 L13693-02 3/12/2008 Gross Beta 2.86E+00 9.60E-01 2.90E+00 WG 13 L1,3693-02 3/12/2008 H-3 -1.28E+03 3.30E+02 1.1OE+03 WG 13 L13693-02 3/12/2008 1-131 3.OOE+00 3.30E+00 1.1OE+01 WG 13 L13693-02 3/12/2008 K-40 -2.30E+01 2.80E+01 1.1OE+02 WG 13 L13693-02 3/12/2008 La-140 1.40E+00 3.70E+00 1.40E+01 WG 13 L13693-02 3/12/2008 Mn-54 1.30E+00 1.70E+00 6.OOE+00 WG 13 L13693-02 3/12/2008 Nb-95 -2.20E+00 2.20E+00 8.30E+00 WG 13 L13693-02 3/12/2008 Ru- 103 -I.90E+00 1.80E+00 6.60E+00 WG 13 L13693-02 3/12/2008 Ru-106 -6.OOE+00 1.60E+01 6.OOE+01 WG 13 L13693-02 3/12/2008 Sb-124 I.OOE+00 4.50E+00 1.70E+01 WG 13 L13693-02 3/12/2008 Sb-125 -4.OOE-01 4.30E+00 1.50E+01 WG 13 L13693-02 3/12/2008 Se-75 -1.60E+00 1.80E+00 6.50E+00 WG 13 L13693-02 3/12/2008 Zn-65 1.60E+01 7.20E+00 2.30E+01 WG 13 L13693-02 3/12/2008 Zr-95 -4.70E+00 3.1 OE+00 1.20E+01 WG 13 L14013-02 6/5/2008 AcTh-228 2.80E+00 7.30E+00 2.50E+01 WG 13 L14013-02 6/5/2008 Ag- 108m 1.40E+00 1.30E+00 4.40E+00 WG 13 L14013-02 6/5/2008 Ag-I 10m -3.70E+00 2.30E+00 9.OOE+00 WG 13 L14013-02 6/5/2008 Ba-140 -8.OOE-01 4.OOE+00 1.50E+01 WG 13 L14013-02 6/5/2008 Be-7 -I.OOE+00 1.40E+01 4.80E+01 w6 13 L14013-02 6/5/2008 Ce-I141 -2.OOE+00 2.40E+00 8.30E+00 WG 13 L14013-02 6/5/2008 Ce-144 7.50E+00 8.1 OE+00 2.70E+01 WG 13 L14013-02 6/5/2008 Co-57 -1.40E+00 1.1 OE+00 3.70E+00 WG 13 L14013-02 6/5/2008 Co-58 -3.90E+00 1.90E+00 7.20E+00 WG 13 L14013-02 6/5/2008 Co-60 - 1.60E+00 2.OOE+00 7.50E+00 WG 13 L14013-02 6/5/2008 Cr-51 1.50E+01 1.40E+01 4.80E+0 I WG 13 L14013-02 6/5/2008 Cs-134 7.OOE-01 1.80E+00 6.50E+00 WG 13 L14013-02 6/5/2008 Cs-137 -3.20E+00 1.60E+00 6.20E+00 WG 13 L14013-02 6/5/2008 Fe-59 -5.OOE-01 4.OOE+00 1.50E+01 WG 13 L14013-02 6/5/2008 Gross Beta 4.50E+00 1.1OE+00 3.001E+00

WG 13 L14013-02 6/5/2008 H-3 -4.50E+02 4.40E+02 1.30E+03 WG 13 L14013-02 6/5/2008 1-131 4.OOE+00 3.40E+00 1.1 OE+01 WG 13 L14013-02 6/5/2008 K-40 -4.30E+01 3.20E+01 1.20E+02 WG 13 L14013-02 6/5/2008 La-140 -8.OOE-01 4.OOE+00 1.50E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 209

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I WG WG WG 13 13 13 L14013-02 L14013-02 L14013-02 6/5/2008 6/5/2008 6/5/2008 Mn-54 Nb-95 Ru-103 2.20E+00

-2.40E+00

-4.OOE-01 1.80E+00

2. 1OE+00 1.80E+00 6.20E+00 7.80E+00 6.30E+00 I

WG 13 L14013-02 6/5/2008 Ru-106 -3.50E+01 1.30E+01 5.30E+01 WG WG WG 13 13 13 L14013-02 L14013-02 L14013-02 6/5/2008 6/5/2008 6/5/2008 Sb-124 Sb-125 Se-75 0.OOE+00 1.60E+00 2.OOE-01 4.40E+00 4.1OE+00

2. 1OE+00 1.60E+01 1.40E+01 7.10E+00 I

WG WG WG 13 13 13 L14013-02 L14013-02 L14366-02 6/5/2008 6/5/2008 9/11/2008 Zn-65 Zr-95 AcTh-228 8.80E+00

-3.60E+00

-6.20E+00 7.80E+00 3.1OE+00 7.30E+00 2.60E+01 1.20E+01 2.80E+01 I

WG 13 L14366-02 9/11/2008 Ag-108m 2.20E+00 1.70E+00 5.80E+00 WG WG WG 13 13 13 L14366-02 L14366-02 L14366-02 9/11/2008 9/11/2008 9/11/2008 Ag-I IOm Ba-140 Be-7 3.40E+00 1.60E+00 7.OOE+00 2.70E+00 2.90E+00 1.50E+01 8.90E+00 1.1OE+01 5.20E+01 I

WG WG WG 13 13 13 L14366-02 L14366-02 L14366-02 9/11/2008 9/11/2008 9/11/2008 Ce-141 Ce-144 Co-57 1.00E+00

-3.OOE+00

-3.OOE-01 2.90E+00 1.1 OE+0 I 1.30E+00 9.90E+00 3.80E+0I 4.70E+00 I

WG 13 L114366-02 9/11/2008 Co-58 - 1.1OE+00 1.70E+00 6.60E+00 WG WG WG 13 13 13 L14366-02 L14366-02 L14366-02 9/11/2008 9/11/2008 9/11/2008 Co-60 Cr-51 Cs-134

-1.50E+00

-3.OOE+01 1.00E+00 2.OOE+00 1.80E+01 1.20E+00 7.90E+00 6.80E+01 5.50E+00 I

WG WG WG 13 13 13 L14366-02 L14366-02 L14366-02 9/11/2008 9/11/2008 9/11/2008 Cs-137 Fe-59 Gross Beta 1.OOE+00

-1.20E+00 2.90E+00 1.90E+00 3.70E+00 1.20E+00 6.80E+00 1.40E+01 3.60E+00 I

WG 13 L14366-02 9/11/2008 H-3 2.OOE+02 4.40E+02 1.30E+03 WG 13 L14366-02 9/11/2008 1-131 -4.OOE+00 3.30E+00 1.20E+01 WG 13 L14366-02 9/11/2008 K-40 7.OOE+00 2.60E+01 9.30E+01 WG 13 L14366-02 9/11/2008 La-140 1.60E+00 2.90E+00 1.1OE+01 WG 13 L14366-02 9/11/2008 Mn-54 -1.60E+00 2.OOE+00 7.50E+00 WG 13 L14366-02 9/11/2008 Nb-95 2.OOE+00 1.90E+00 6.50E+00 WG 13 L14366-02 9/11/2008 Ru-103 -1.00E+00 1.90E+00 7.OOE+00 WG 13 L14366-02 9/11/2008 Ru-106 -4.OOE+00 1.60E+01 6.OOE+01 WG WG WG 13 13 13 L14366-02 L14366-02 L14366-02 9/11/2008 9/11/2008 9/11/2008 Sb-124 Sb-125 Se-75

-4.30E+00

-3.OOE-01 3.1OE+00 5.OOE+00 4.80E+00

2. 1OE+00 2.1OE+0I 1.70E+01

7. 1OE+00 I

WG WG WG 13 13 13 L14366-02 L14366-02 L14687-02 9/11/2008 9/11/2008 12/3/2008 Zn-65 Zr-95 AcTh-228

-7.80E+00 9.OOE-01 5.30E+00 4.40E+00 3.20E+00

7. 1OE+00 1.80E+01 1.20E+01 2.50E+0 I I

WG 13 L14687-02 12/3/2008 Ag-108m 6.OOE-01 1.30E+00 4.60E+00 WG WG WG 13 13 13 L14687-02 L14687-02 L14687-02 12/3/2008 12/3/2008 12/3/2008 Ag-11 Om Ba-140 Be-7

- 1.1OE+00

-2.80E+00 1.50E+01 2.1OE+00 3.60E+00 1.30E+01 8.OOE+00 1.40E+01 4.30E+01 I

WG WG WG 13 13 13 L14687-02 L14687-02 L14687-02 12/3/2008 12/3/2008 12/3/2008 Ce- 141 Ce-144 Co-57

-4.40E+00

-5.10E+00 5.90E-0I 2.20E+00 7.50E+00 9.70E-01 7.90E+00 2.60E+01 3.30E+00 I

WG 13 L14687-02 12/3/2008 Co-58 2.OOE+00 1.50E+00 5. 1OE+00 WG WG WG 13 13 13 L14687-02 L14687-02 L14687-02 12/3/2008 12/3/2008 12/3/2008 Co-60 Cr-51 Cs-134

-1.50E+00

-6.OOE+00 8.OOE-01 1.90E+00 1.30E+01 1.40E+00 7.30E+00 4.60E+0I 5.90E+00 I

WG WG WG 13 13 13 L14687-02 L14687-02 L14687-02 12/3/2008 12/3/2008 12/3/2008 Cs-137 Fe-59 Gross Beta

-1.00E-01 2.30E+00 1.30E+00 1.60E+00 3.50E+00 1.00E+00 5.80E+00 1.20E+01 3.40E+00 U

WG 13 L14687-02 12/3/2008 H-3 5.70E+02 4.60E+02 1.30E+03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

210 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC. STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

WG 13 L14687-02 12/3/2008 1-131 1.00E+00 3.OOE+00 1.00E+01 WG 13 L14687-02 12/3/2008 K-40 1.20E+01 2.90E+01 1.00E+02 WG 13 L14687-02 12/3/2008 La-140 -2.80E+00 3.60E+00 1.40E+01 WG 13 L14687-02 12/3/2008 Mn-54 2.30E+00 1.70E+00 5.80E+00 WG 13 L14687-02 12/3/2008 Nb-95 1.00E+00 1.70E+00 5.90E+00 WG 13 L14687-02 12/3/2008 Ru-103 3.OOE-01 1.70E+00 5.90E+00 WG 13 LI4687-02 12/3/2008 Ru-106 4.OOE+00 1.50E+01 5.30E+01 WG 13 LI4687-02 12/3/2008 Sb-124 4.70E+00 4.70E+00 1.60E+01 WG 13 L14687-02 12/3/2008 Sb-125 1.40E+00 3.80E+00 1.30E+01 WG 13 L14687-02 12/3/2008 Se-75 2.40E+00 1.60E+00 5.30E+00 WG 13 L14687-02 12/3/2008 Zn-65 -1.38E+01 4.50E+00 1.90E+01 WG 13 L14687-02 12/3/2008 Zr-95 2.90E+00 3.1OE+00 1.00E+01 WG 14 L14013-03 6/5/2008 AcTh-228 2.20E+00 4.OOE+00 1.30E+01 WG 14 L14013-03 6/5/2008 Ag-108m 7.00E-02 5.50E-01 1.90E+00 WG 14 L14013-03 6/5/2008 Ag-110m -I.10E+00 8.40E-01 3.OOE+00 WG 14 L14013-03 6/5/2008 Ba-140 -1.90E+00 1.70E+00 6.20E+00 WG 14 L14013-03 6/5/2008 Be-7 5.50E+00 5.90E+00 2.OOE+01 WG 14 L14013-03 6/5/2008 Ce-141 1.70E+00 1.10E+00 3.80E+00 WG 14 L14013-03 6/5/2008 Ce-144 3.40E+00 3.80E+00 1.30E+01 WG 14 L14013-03 6/5/2008 Co-57 2.20E-01 4.70E-01 1.60E+00 WG 14 L14013-03 6/5/2008 Co-58 -6.40E-01 6.60E-01 2.30E+00 WG 14 L14013-03 6/5/2008 Co-60 -7.30E-01 6.OOE-01 2.20E+00 WG 14 L14013-03 6/5/2008 Cr-51 6.50E+00 7.40E+00 2.40E+0 I WG 14 L14013-03 6/5/2008 Cs-134 2.OOE-01 6.30E-01 2.20E+00 WG 14 L14013-03 6/5/2008 Cs-137 -8.60E-01 6.80E-01 2.40E+00 WG 14 L14013-03 6/5/2008 Fe-59 6.OOE-01 1.50E+00 5.OOE+00 WG 14 L14013-03 6/5/2008 Gross Beta 3.20E+00 9.90E-01 2.90E+00 WG 14 L14013-03 6/5/2008 H-3 -2.OOE+02 4.40E+02 1.30E+03 WG 14 L14013-03 6/5/2008 1-131 3.OOE-01 2.30E+00 7.70E+00 WG 14 L14013-03 6/5/2008 K-40 1.00E+00 1.40E+01 4.70E+0 I WG 14 L14013-03 6/5/2008 La-140 -1.90E+00 1.70E+00 6.20E+00 WG 14 L14013-03 6/5/2008 Mn-54 -6.70E-01 6.10E-01 2.1OE+00 WG 14 L14013-03 6/5/2008 Nb-95 1.1OE+00 1.20E+00 4.1OE+00 WG 14 L14013-03 6/5/2008 Ru-103 -5.10E-01 7.20E-01 2.50E+00 WG 14 L14013-03 6/5/2008 Ru-106 5.40E+00 5.90E+00 2.OOE+01 WG 14 L14013-03 6/5/2008 Sb-124 -1.40E+00 1.70E+00 6.1OE+00 WG 14 L14013-03 6/5/2008 Sb-125 1.001E+00 1.70E+00 5.60E+00 WG 14 L14013-03 6/5/2008 Se-75 -1.62E+00 7.40E-01 2.60E+00 WG 14 L14013-03 6/5/2008 Zn-65 7.00E+00 2.80E+00 9.00E+00 WG 14 L14013-03 6/5/2008 Zr-95 -2.20E+00 1.20E+00 4.1OE+00 WG 14 L14366-03 9/11/2008 AcTh-228 4.80E+00 7.00E+00 2.40E+01 WG 14 L14366-03 9/11/2008 Ag- 108m 1.00E-01 1.50E+00 5.30E+00 WG 14 L14366-03 9/11/2008 Ag-1 10m -2.OOE+00 2.50E+00 9.20E+00 WG 14 L14366-03 9/11/2008 Ba-140 3.60E+00 3.1OE+00 1.00E+01 WG 14 L14366-03 9/11/2008 Be-7 -2.60E+01 1.40E+01 5.50E+01 WG 14 L14366-03 9/11/2008 Ce-141 -7.20E+00 3.10E+00 1.10E+01 WG 14 L14366-03 9/11/2008 Ce-144 -1.10E+01 1.00E+01 3.60E+01 WG 14 L14366-03 9/11/2008 Co-57 -4.OOE-01 1.30E+00 4.60E+00 WG 14 L14366-03 9/11/2008 Co-58 -2.1 OE+00 1.80E+00 6.90E+00 WG 14 L14366-03 9/11/2008 Co-60 8.OOE-01 1.80E+00 6.60E+00 WG 14 L14366-03 9/11/2008 Cr-51 -5.20E+01 1.60E+01 6.10E+01 WG 14 L14366-03 9/11/2008 Cs-134 -5.OOE-01 1.80E+00 6.60E+00 WG 14 L14366-03 9/11/2008 Cs-137 -3.40E+00 1.70E+00 6.70E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 211

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 U

SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I WG WG 14 14 L14366-03 L14366-03 9/11/2008 9/11/2008 Fe-59 Gross Beta 3.1OE+00 4.70E-01 4.1OE+00 8.OOE-0 I 1.40E+01 2.80E+00 I

WG 14 L14366-03 9/11/2008 H-3 -1.70E+02 4.30E+02 1.30E+03 WG WG 14 14 L14366-03 L14366-03 9/11/2008 9/11/2008 1-131 K-40

-3.40E+00

-9.OOE+00 3.30E+00 2.80E+01 1.20E+01 1.00E+02 I

WG 14 L14366-03 9/11/2008 La- 140 3.60E+00 3.1OE+00 1.00E+01 WG WG WG 14 14 14 L14366-03 L14366-03 L14366-03 9/11/2008 9/11/2008 9/11/2008 Mn-54 Nb-95 Ru-103 6.OOE-01 3.50E+00

-2.30E+00 1.90E+00 3.1OE+00

2. 1OE+00 6.80E+00 1.10E+01 7.60E+00 I

WG 14 L14366-03 9/11/2008 Ru-106 -3.30E+01 1.60E+01 6.40E+01 WG WG 14 14 L14366-03 L14366-03 9/11/2008 9/11/2008 Sb-124 Sb-125

-3.OOE+00 2.40E+00 4.1OE+00 4.90E+00 2.20E+00 1.60E+01 1.70E+01 7.70E+00 I

WG 14 L14366-03 9/11/2008 Se-75 -1.00E-01 WG WG 14 14 L14366-03 L14366-03 9/11/2008 9/11/2008 Zn-65 Zr-95 1.50E+00 7.OOE-01 8.30E+00 3.OOE+00 2.90E+01 1.10E+01 I I

I I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 212 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

WS L13547-01 1/23/2008 AcTh-228 8.1OE+00 3.60E+00 1.20E+01 WS L13547-01 1/23/2008 Ag- 108m -8.70E-01 8.90E-01 3.OOE+00 WS L13547-01 1/23/2008 Ag-1 10m 1.04E+00 9.70E-01 3.20E+00 WS L13547-01 1/23/2008 Ba-140 4.OOE-01 1.50E+00 5.OOE+00 WS L13547-01 1/23/2008 Be-7 -2. 1OE+00 6.60E+00 2.30E+01 WS L13547-01 1/23/2008 Ce- 141 0.OOE+00 1.40E+00 4.80E+00 WS L13547-01 1/23/2008 Ce-144 1.40E+00 3.70E+00 1.30E+01 WS L13547-01 1/23/2008 Co-57 7.30E-01 5.OOE-01 1.70E+00 WS L13547-01 1/23/2008 Co-58 -2.30E-01 7.20E-01 2.50E+00 WS L13547-01 1/23/2008 Co-60 2.90E-01 7.10E-01 2.40E+00 WS L13547-01 1/23/2008 Cr-51 -9.90E+00 7.OOE+00 2.40E+01 WS L13547-01 1/23/2008 Cs-134 -1.20E-01 7.70E-01 2.70E+00 WS L13547-01 1/23/2008 Cs-137 5.40E-01 6.90E-0 I 2.30E+00 WS L13547-01 1/23/2008 Fe-59 9.OOE-01 1.60E+00 5.30E+00 WS L113547-01 1/23/2008 1-131 -I.00E-01 1.70E+00 5.70E+00 WS L13547-01 1/23/2008 K-40 3.25E+02 1.90E+01 4.70E+0I WS L13547-01 1/23/2008 La- 140 4.OOE-01 1.50E+00 5.OOE+00 WS L13547-01 1/23/2008 Mn-54 1.05E+00 6.90E-01 2.30E+00 WS L113547-01 1/23/2008 Nb-95 4.10E-01 8.30E-01 2.80E+00 WS L113547-01 1/23/2008 Ru-103 -1.81E+00 8.70E-01 3.1OE+00 WS L13547-01 1/23/2008 Ru-106 -I.20E+01 6.40E+00 2.30E+01 WS L113547-01 1/23/2008 Sb-124 -I.90E+00 1.70E+00 6.1OE+00 WS L13547-01 1/23/2008 Sb-125 -3.OOE+00 1.80E+00 6.40E+00 WS L13547-01 1/23/2008 Se-75 4.70E-01 9.OOE-01 3.OOE+00 WS L13547-01 1/23/2008 Zn-65 -I .00E+00 1.60E+00 5.60E+00 WS L13547-01 1/23/2008 Zr-95 -3.OOE-01 1.20E+00 4.20E+00 WS L13640-01 2/25/2008 AcTh-228 9.1OE+00 5.20E+00 1.70E+01.

WS L113640-01 2/25/2008 Ag-108m 9.OOE-01 1.1OE+00 3.80E+00 WS L13640-01 2/25/2008 Ag-110m -9.OOE-01 1.90E+00 6.70E+00 WS L13640-01 2/25/2008 Ba-140 - 1.20E+00 2.60E+00 9.60E+00 WS L13640-01 2/25/2008 Be-7 1.70E+01 1.10E+01 3.60E+01 WS L13640-01 2/25/2008 Ce- 141 2.90E+00 2.OOE+00 6.50E+00 WS L13640-01 2/25/2008 Ce- 144 3.40E+00 7.30E+00 2.50E+01 WS L13640-01 2/25/2008 Co-57 1.29E+00 9.40E-01 3.1OE+00 WS L13640-01 2/25/2008 Co-58 7.OOE-01 1.30E+00 4.50E+00 WS L13640-01 2/25/2008 Co-60 -4.OOE-01 1.1OE+00 4.20E+00 WS L13640-01 2/25/2008 Cr-51 -2.20E+01 1.30E+01 4.60E+01 WS L13640-01 2/25/2008 Cs-134 -3.OOE-01 1.20E+00 5.40E+00 WS L13640-01 2/25/2008 Cs-137 4.OOE-01 1.50E+00 5.1OE+00 WS L13640-01 2/25/2008 Fe-59 3.50E+00 2.80E+00 9.50E+00 WS L13640-01 2/25/2008 1-131 3.60E+00 2.50E+00 8.40E+00 WS L13640-01 2/25/2008 K-40 3.07E+02 3.20E+01 7.60E+0 I WS L13640-01 2/25/2008 La-140 -1.20E+00 2.60E+00 9.60E+00 WS L13640-01 2/25/2008 Mn-54 4.OOE-01 1.40E+00 4.70E+00 WS L13640-01 2/25/2008 Nb-95 -1.70E+00 1.70E+00 6.20E+00 WS L13640-01 2/25/2008 Ru-103 -2.20E+00 1.30E+00 4.80E+00 WS L13640-01 2/25/2008 Ru-106 6.OOE+00 1.20E+01 4.20E+01 WS L13640-01 2/25/2008 Sb-124 2.20E+00 3.OOE+00 1.1 OE+0 I WS L13640-01 2/25/2008 Sb-125 -3.80E+00 3.60E+00 1.30E+01 WS L13640-01 2/25/2008 Se-75 6.OOE-01 1.50E+00 5.20E+00 WS L13640-01 2/25/2008 Zn-65 2.30E+00 3.30E+00 I.IOE+01 WS L13640-01 2/25/2008 Zr-95 3.OOE+00 2.40E+00 8.OOE+00 WS L13737-01 3/24/2008 AcTh-228 1.11 E+0 I 5.90E+00 1.90E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 213

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

I WS WS L13737-01 L13737-01 3/24/2008 3/24/2008 Ag-108m Ag-I 10m

-2.OOE-01

-1.50E+00 1.40E+00 1.80E+00 4.80E+00 6.90E+00 I

WS L13737-01 3/24/2008 Ba-140 -1.60E+00 3.20E+00 1.20E+01 WS WS L13737-01 L13737-01 3/24/2008 3/24/2008 Be-7 Ce- 141 9.OOE+00

-4.OOE-01 7.70E+00 1.1 OE+0 1 2.20E+00 7.60E+00 3.80E+01 7.50E+00 2.50E+01 U

WS L13737-01 3/24/2008 Ce- 144

-7.40E-01 WS WS WS L13737-01 L13737-01 L13737-01 3/24/2008 3/24/2008 3/24/2008 Co-57 Co-58 Co-60

-2.OOE-01

-3.20E+00 7.50E-01 1.70E+00 2.1OE+00 2.70E+00 6.00E+00 8.30E+00 I

WS L13737-01 3/24/2008 Cr-51 1.50E+01 1.101E+01 3.80E+01 WS WS WS L13737-01 L13737-01 3/24/2008 3/24/2008 3/24/2008 Cs-134 Cs-137 5.OOE-01

-8.OOE-01

-2.70E+00 1.00E+00 1.60E+00 3.50E+00 5.OOE+00 5.90E+00 1.30E+01 I

L13737-01 Fe-59 WS WS WS L13737-01 L13737-01 L13737-01 3/24/2008 3/24/2008 3/24/2008 1-131 K-40 La-140 1.20E+00 2.75E+02

- 1.60E+00 2.40E+00 3.60E+01 3.20E+00 8.30E+00 8.40E+0I 1.20E+01 I

WS L13737-01 3/24/2008 Mn-54 -1.00E-01 1.30E+00 4.70E+00 WS WS WS L13737-01 L13737-01 L13737-01 3/24/2008 3/24/2008 3/24/2008 Nb-95 Ru-103 Ru- 106 3.00E-01

-2.90E+00 8.OOE+00 1.80E+00 1.60E+00 1.20E+01 6.30E+00 6.OOE+00 4.OOE+01 I

WS WS WS L13737-01 L13737-01 L13737-01 3/24/2008 3/24/2008 3/24/2008 Sb-124 Sb-125 Se-75

-3.OOE+00 8.50E+00 2.80E+00 3.80E+00 3.90E+00 1.70E+00 1.50E+01 1.20E+01 5.40E+00 I

WS L13737-01 3/24/2008 Zn-65 5.OOE+00 2.90E+00 9.40E+00 WS WS WS L13737-01 L13848-01 L13865-01 3/24/2008 3/24/2008 4/22/2008 Zr-95 H-3 AcTh-228

-9.00E-01

-3.40E+02 6.40E+00 2.70E+00 4.50E+02 5.40E+00 9.80E+00 1.40E+03 1.80E+01 I

WS WS WS L13865-01 L13865-01 L13865-01 4/22/2008 4/22/2008 4/22/2008 Ag-108m Ag- I Om Ba-140

-7.OOE-0 I

-6.OOE-01

-7.50E+00 1.1 OE+00 1.90E+00 3.20E+00 4.10E+00 6.70E+00 1.40E+01 I

WS L13865-01 4/22/2008 Be-7 -5.OOE+00 1.20E+01 4.30E+01 WS WS WS L13865-01 L13865-01 L13865-01 4/22/2008 4/22/2008 4/22/2008 Ce-I141 Ce-I144 Co-57 1.90E+00 2.70E+00 1.001E-01 2.20E+00 7.50E+00 9.60E-01 7.50E+00 2.60E+01 3.30E+00 I

WS WS WS L13865-01 L13865-01 L13865-01 4/22/2008 4/22/2008 4/22/2008 Co-58 Co-60 Cr-51 I.00E-01 1.60E+00 2.40E+01 1.50E+00 1.30E+00 1.40E+01 5.10E+00 4.60E+00 4.60E+0 I I

WS L13865-01 4/22/2008 Cs-134 -4.30E-01 9.OOE-01 4.40E+00 WS WS WS L13865-01 L13865-01 L13865-01 4/22/2008 4/22/2008 4/22/2008 Cs-137 Fe-59 1-131 4.00E-01 3.90E+00 4.00E-01 1.40E+00 3.1OE+00 4.30E+00 4.70E+00 1.00E+0I 1.50E+01 I

WS 7.10E+01 I

L13865-01 4/22/2008 K-40 2.57E+02 2.90E+01 WS L13865-01 4/22/2008 La- 140 -7.50E+00 3.20E+00 1.40E+01 WS L13865-01 4/22/2008 Mn-54 -3.OOE+00 1.30E+00 5.10E+00 WS L13865-01 4/22/2008 Nb-95 -1.80E+00 2.OOE+00 7.30E+00 WS WS WS L13865-01 L13865-01 L13865-01 4/22/2008 4/22/2008 4/22/2008 Ru-103 Ru-106 Sb-124 1.20E+00 3.OOE+00

-3.30E+00 1.40E+00 1.30E+01 3.50E+00 4.60E+00 4.50E+01 1.40E+01 I

WS WS WS WS L13865-01 L13865-01 L13865-01 4/22/2008 4/22/2008 4/22/2008 Sb-125 Se-75 Zn-65

-1.50E+00

-3.70E+00 9.00E-01 3.40E+00 1.50E+00 2.90E+00 1.20E+01 5.60E+00 1.00E+01 I

L13865-01 4/22/2008 Zr-95 -1.70E+00 2.40E+00 8.90E+00 WS L13982-01 5/28/2008 AcTh-228 7.OOE-01 6.50E+00 2.30E+01

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

214

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

WS L13982-01 5/28/2008 Ag-108m 4.OOE-01 .10OE+00 4.OOE+00 WS L13982-01 5/28/2008 Ag-I Om -6.OOE-01 1.90E+00 7.OOE+00 WS L13982-01 5/28/2008 Ba-140 -1.05E+01 3.30E+00 1.50E+01 WS L13982-01 5/28/2008 Be-7 2.OOE+00 1.30E+01 4.50E+01 WS L13982-01 5/28/2008 Ce-141 9.OOE-01 3.1OE+00 1.00E+01 WS L13982-01 5/28/2008 Ce-144 7.30E+00 8.20E+00 2.70E+01 WS L13982-01 5/28/2008 Co-57 -5.OOE-01 1.00E+00 3.60E+00 WS L13982-01 5/28/2008 Co-58 0.OOE+00 1.60E+00 5.80E+00 WS L13982-01 5/28/2008 Co-60 8.OOE-01 1.60E+00 5.50E+00 WS L13982-01 5/28/2008 Cr-51 2.OOE+00 1.50E+01 5.30E+01 WS L13982-01 5/28/2008 Cs-134 -1.40E+00 1.40E+00 6.20E+00 WS L13982-01 5/28/2008 Cs-137 -7.OOE-01 1.30E+00 4.90E+00 WS L13982-01 5/28/2008 Fe-59 -3.40E+00 3.50E+00 1.30E+01 WS L13982-01 5/28/2008 1-131 -3.80E+00 3.90E+00 1.40E+01 WS L13982-01 5/28/2008 K-40 3.56E+02 3.50E+01 7.60E+01 WS L13982-01 5/28/2008 La- 140 -1.05E+01 3.30E+00 1.50E+01 WS L13982-01 5/28/2008 Mn-54 -1.60E+00 1.50E+00 5.70E+00 WS L13982-01 5/28/2008 &b-95 -8.OOE-01 2.OOE+00 7.20E+00 WS L13982-01 5/28/2008 Ru-103 -3.40E+00 1.70E+00 6.30E+00 WS L13982-01 5/28/2008 Ru-106 1.80E+01 1.40E+01 4.70E+01 WS L13982-01 5/28/2008 Sb-124 4.70E+00 3.60E+00 1.20E+01 WS L113982-01 5/28/2008 Sb-125 -3.OOE-01 3.40E+00 1.20E+01 WS L13982-01 5/28/2008 Se-75 7.OOE-01 1.70E+00 5.80E+00 WS L13982-0 1 5/28/2008 Zn-65 -9.OOE-01 3.30E+00 1.20E+01 WS L13982-01 5/28/2008 Zr-95 -1.70E+00 2.50E+00 9.20E+00 ws WS L14095-01 6/22/2008 AcTh-228 5.30E+00 4.40E+00 1.50E+01 L14095-01 6/22/2008 Ag-108m 6.OOE-02 5.70E-01 1.90E+00 WS WS L14095-01 6/22/2008 Ag-1 10m -6.20E-01 9.10E-01 3.20E+00 L14095-01 6/22/2008 Ba-140 -3.00E+00 2.60E+00 9.30E+00 WS L14095-01 6/22/2008 Be-7 1.50E+00 6.70E+00 2.30E+01 WS WS L14095-01 6/22/2008 Ce-141 1.50E+00 1.40E+00 4.50E+00 L14095-01 6/22/2008 Ce-144 3.20E+00 3.90E+00 1.30E+01 WS L14095-01 6/22/2008 Co-57 -1.70E-01 4.90E-01 1.70E+00 WS WS L14095-01 6/22/2008 Co-58 -8.10E-01 7.50E-01 2.60E+00 WS L14095-01 6/22/2008 Co-60 1.31 E+00 6.90E-01 2.20E+00 WS L14095-01 6/22/2008 Cr-51 2.02E+01 9.OOE+00 2.90E+0 I L14095-01 6/22/2008 Cs-134 5.70E-01 6.60E-0 I 2.30E+00 WS WS L14095-01 6/22/2008 Cs-137 6.80E-01 6.90E-0 I 2.30E+00 L14095-01 6/22/2008 Fe-59 2.10E+00 1.80E+00 6.OOE+00 WS L14095-01 6/22/2008 1-131 -6.50E+00 4.20E+00 1.40E+01 WS WS L14095-01 6/22/2008 K-40 2.82E+02 1.80E+01 4.70E+01 WS L14095-01 6/22/2008 La-140 -3.OOE+00 2.60E+00 9.30E+00 WS L14095-01 6/22/2008 Mn-54 -3.30E-01 6.40E-01 2.20E+00 WS L14095-01 6/22/2008 Nb-95 -4. I0E-01 9.70E-01 3.40E+00 L14095-01 6/22/2008 Ru-103 -5.60E-01 8.40E-01 2.90E+00 WS WS L14095-01 6/22/2008 Ru-106 6.60E+00 6.40E+00 2.10E+01 L14095-01 6/22/2008 Sb-124 - 1.40E+00 1.90E+00 6.70E+00 WS WS L14095-01 6/22/2008 Sb-125 1.00E+00 1.70E+00 5.80E+00 L14095-01 6/22/2008 Se-75 -8.60E-01 7.90E-01 2.70E+00 WS L14095-01 6/22/2008 Zn-65 -5.40E+00 1.60E+00 5.90E+00 WS WS L14095-01 6/22/2008 Zr-95 -7.OOE-01 1.30E+00 4.60E+00 L14193-01 6/22/2008 H-3 -3.90E+02 4.40E+02 1.40E+03 WS L14197-01 7/22/2008 AcTh-228 1.80E+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 215

I Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

I WS L14197-01 7/22/2008 Ag-108m -4.00E-01 1.60E+00 5.80E+00 WS WS WS L14197-01 L14197-01 L14197-01 7/22/2008 7/22/2008 7/22/2008 Ag-i I10m Ba-140 Be-7

-2.80E+00

-1.80E+00 6.OOE+00 2.60E+00 3.60E+00 1.40E+01 9.80E+00 1.40E+01 5.OOE+0I I

WS L14197-01 7/22/2008 5.OOE+00 6.60E+00 2.20E+01 I

Ce-I141 WS L14197-01 7/22/2008 Ce-144 1.50E+01 1.1OE+0I 3.70E+01 WS L14197-01 7/22/2008 Co-57 -4.OOE-01 1.40E+00 4.80E+00 WS L14197-01 7/22/2008 Co-58 -2.90E+00 1.80E+00 7.20E+00 WS WS WS L14197-01 L14197-01 L14197-01 7/22/2008 7/22/2008 7/22/2008 Co-60 Cr-51 Cs-134 2.10E+00

-1.00E+01 5.1OE+00

2. 1OE+00 1.80E+01 2.OOE+00 7.1OE+00 6.40E+01 6.20E+00 I

WS L14197-01 7/22/2008 -2.60E+00 1.90E+00 7.30E+00 I

Cs-137 WS L14197-01 7/22/2008 Fe-59 -5.00E-01 4.50E+00 1.60E+0I WS L14197-01 7/22/2008 1-131 -7.OOE+00 3.50E+00 1.30E+01 WS L14197-01 7/22/2008 K-40 2.14E+02 4.10E+01 I.1OE+02

WS WS WS L14197-01 L14197-01 L14197-01 7/22/2008 7/22/2008 7/22/2008 La-140 Mn-54 Nb-95

-1.80E+00 1.1OE+00 2.80E+00 3.60E+00 1.90E+00 2.60E+00 1.40E+01 6.60E+00 8.80E+00 I

WS L14197-01 7/22/2008 Ru-103 -4.20E+00 2.20E+00 8.20E+00 WS WS WS L14197-01 L14197-01 7/22/2008 7/22/2008 Ru-106 Sb-124 3.20E+01

-4. 1OE+00 1.70E+01 4.80E+00 5.40E+0 I 1.90E+01 I

L14197-01 7/22/2008 Sb-125 -4.80E+00 5.OOE+00 1.80E+01 WS WS WS L14197-01 L14197-01 L14197-01 7/22/2008 7/22/2008 7/22/2008 Se-75 Zn-65 Zr-95

-2.40E+00 3.40E+00

-1.20E+00 2.30E+00 4.OOE+00 3.20E+00 8.40E+00 1.40E+01 1.20E+01 I

WS L14293-01 8/18/2008 AcTh-228 -1. 1IE+OI 8.70E+00 3.40E+01 WS WS WS L14293-01 L14293-01 8/18/2008 8/18/2008 Ag- 108m Ag-1 10m 1.80E+00 I.30E+00 1.70E+00 2.70E+00 5.70E+00 9.90E+00 I

L14293-01 8/18/2008 Ba-140 9.OOE-0 I 3.60E+00 1.40E+01 WS WS WS L14293-01 L14293-01 L14293-01 8/18/2008 8/18/2008 8/18/2008 Be-7 Ce-141 Ce-144 4.OOE+00

-3.1OE+00 2.OOE+01 1.60E+01 3.10E+00 1.20E+01 5.80E+01 1.10E+0 1 3.80E+01 I

WS L14293-01 8/18/2008 Co-57 -1.80E+00 1.30E+00 5.00E+00 WS WS WS L14293-01 L14293-01 8/18/2008 8/18/2008 Co-58 Co-60

-3.OOE-01

-3.OOE+00 2.1OE+00 2.20E+00 7.90E+00 9.30E+00 I

L14293-01 8/18/2008 Cr-51 -2.OOE+00 1.90E+01 6.70E+0 I WS WS WS L14293-01 L14293-01 L14293-01 8/18/2008 8/18/2008 8/18/2008 Cs-134 Cs-137 Fe-59 6.00E-01

-1.70E+00

-9.50E+00 1.70E+00 2.00E+00 4.60E+00 7.20E+00 7.90E+00 2.OOE+01 I

WS L14293-01 8/18/2008 1-131 9.30E+00 4.10E+00 1.30E+01 WS WS WS L14293-01 L14293-01 8/18/2008 8/18/2008 K-40 La-140 2.89E+02 9.OOE-01 4.90E+01 3.60E+00 1.20E+02 1.40E+01 I

L14293-01 8/18/2008 Mn-54 -3.30E+00 2.OOE+00 8.20E+00 WS WS WS L14293-01 L14293-01 L14293-01 8/18/2008 8/18/2008 8/18/2008 Nb-95 Ru-103 Ru-106 2.80E+00

-4.80E+00 1.20E+01 2.80E+00 2.50E+00 1.80E+01 9.60E+00 9.70E+00 6.40E+01 I

WS L14293-01 8/18/2008 Sb-124 0.00E+00 4.60E+00 1.80E+01 WS WS WS L14293-01 L14293-01 8/18/2008 8/18/2008 Sb-125 Se-75

-1.80E+00 1.80E+00 5.20E+00 2.50E+00 1.90E+01 8.40E+00 I

L14293-01 8/18/2008 Zn-65 .-1.03E+01 4.70E+00 2.OOE+01 WS WS WS L14293-01 L14421-01 L14421-01 8/18/2008 9/23/2008 9/23/2008 Zr-95 AcTh-228 Ag-108m 3.30E+00

-1.80E+00

-1.80E+00 3.80E+00 5.70E+00 1.IOE+00 1.30E+01 2.OOE+01 3.90E+00 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

216

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

WS L14421-01 9/23/2008 Ag-110m -2.OOE-01 1.80E+00 6.50E+00 WS L14421-01 9/23/2008 Ba-140 1.60E+00 3.20E+00 1.10E+01 WS L14421-01 9/23/2008 Be-7 -3.1OE+01 1.1 OE+0 I 4.20E+01 WS L14421-01 9/23/2008 Ce- 141 2.OOE-01 2.20E+00 7.60E+00 WS L14421-01 9/23/2008 Ce- 144 -1.25E+01 7.40E+00 2.60E+01 WS L14421-01 9/23/2008 Co-57 -8.30E-01 9.40E-01 3.20E+00 WS L14421-01 9/23/2008 Co-58 -2.30E+00 1.20E+00 4.70E+00 WS L14421-01 9/23/2008 Co-60 -1.50E+00 1.30E+00 5.OOE+00 WS L14421-01 9/23/2008 Cr-51 -1.20E+01 1.20E+01 4.20E+01 WS L14421-01 9/23/2008 Cs-134 3.OOE-01 1.30E+00 4.50E+00 WS L14421-01 9/23/2008 Cs-137 -6.OOE-01 1.30E+00 4.70E+00 WS L14421-01 9/23/2008 Fe-59 1.90E+00 2.70E+00 9.40E+00 WS L14421-01 9/23/2008 1-131 -2.50E+00 3.80E+00 1.30E+01 WS L14421-01 9/23/2008 K-40 2.82E+02 2.80E+01 7.1OE+0I WS L14421-01 9/23/2008 La-140 1.60E+00 3.20E+00 1.1OE+01 WS L14421-01 9/23/2008 Mn-54 -7.OOE-01 1.30E+00 4.50E+00 WS L14421-01 9/23/2008 Nb-95 2.20E+00 2.30E+00 7.70E+00 WS L14421-01 9/23/2008 Ru-103 9.OOE-01 1.40E+00 4.80E+00 WS L14421-01 9/23/2008 Ru-106 8.OOE+00 1.10E+01 3.90E+01 WS L14421-01 9/23/2008 Sb-124 -8.OOE-01 3.1OE+00 1.10E+01 WS L14421-01 9/23/2008 Sb-125 -2.70E+00 3.50E+00 1.20E+01 WS LI14421-01 9/23/2008 Se-75 -1.20E+00 1.50E+00 5.1OE+00 WS L14421-01 9/23/2008 Zn-65 1.50E+00 5.80E+00 1.90E+01 WS L14421-01 9/23/2008 Zr-95 -2.OOE+00 2.1OE+00 7.70E+00 WS L14514-01 9/23/2008 H-3 -2.60E+02 4.50E+02 1.30E+03 WS L14556-01 10/27/2008 AcTh-228 1.80E+01 7.OOE+00 2.20E+01 WS L14556-01 10/27/2008 Ag- 108m -2.1 OE+00 1.30E+00 4.90E+00 WS L14556-01 10/27/2008 Ag-1 10m 2.40E+00 2.20E+00 7.50E+00 WS L14556-01 10/27/2008 Ba-140 -7.40E+00 3.40E+00 1.50E+01 WS L14556-01 10/27/2008 Be-7 -9.OOE+00 1.20E+01 4.60E+01 WS L14556-01 10/27/2008 Ce- 141 -2.60E+00 2.30E+00 8. 1OE+00 WS L14556-01 10/27/2008 Ce- 144 2.1OE+00 7.60E+00 2.60E+01 WS L14556-01 10/27/2008 Co-57 1.24E+00 9.80E-01 3.30E+00 WS L14556-01 10/27/2008 Co-58 -6.OOE-01 I .80E+00 6.70E+00 WS L14556-01 10/27/2008 Co-60 2.50E+00 2.1OE+00 7.1OE+00 WS L14556-01 10/27/2008 Cr-51 -3.OOE+00 1.30E+01 4.60E+0I WS L14556-01 10/27/2008 Cs-134 -7.OOE-01 1.40E+00 6.70E+00 WS L14556-01 10/27/2008 Cs-137 I. 1OE+00 1.80E+00 6.1OE+00 WS L14556-01 10/27/2008 Fe-59 -5.1 OE+00 4.1OE+00 1.60E+01 WS L14556-01 10/27/2008 1-131 1.30E+00 3.1OE+00 1.10E+01 WS L14556-01 10/27/2008 K-40 3.08E+02 4.10E+01 9.70E+01 WS L14556-01 10/27/2008 La-140 -7.40E+00 3.40E+00 1.50E+01 WS L14556-01 10/27/2008 Mn-54 6.OOE-01 1.70E+00 5.90E+00 WS L14556-01 10/27/2008 Nb-95 6.OOE-01 2.OOE+00 7.OOE+00 WS L14556-01 10/27/2008 Ru-103 1.30E+00 1.50E+00 5.20E+00 WS L14556-01 10/27/2008 Ru-106 -3.OOE+00 1.50E+01 5.30E+01 WS L14556-01 10/27/2008 Sb-124 3.60E+00 4.I OE+00 1.50E+01 WS L14556-01 10/27/2008 Sb-125 -8.OOE-01 4.OOE+00 1.40E+01 WS L14556-01 10/27/2008 Se-75 -7.OOE-01 1.60E+00 5.80E+00 WS L14556-01 10/27/2008 Zn-65 1.90E+00 4.30E+00 1.50E+01 WS L14556-01 10/27/2008 Zr-95 -5.60E+00 2.80E+00 1.10E+01 WS L14647-01 11/17/2008 AcTh-228 -5.30E+00 5.OOE+00 1.80E+01 WS L14647-01 11/17/2008 Ag-108m 0.OOE+00 9.50E-01 3.30E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 217

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 S SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) U wS wS ws L14647-01 L14647-01 11/17/2008 11/17/2008 Ag-I 10m Ba-140 4.OOE-01

-4.OOE-01 1.60E+00 2.90E+00 5.50E+00 1.1 OE+0 I I

WS L14647-01 11/17/2008 Be-7 5.OOE+00 1.OOE+01 3.60E+OI ws wS wS L14647-01 L14647-01 L14647-01 11/17/2008 11/17/2008 11/17/2008 Ce-I141 Ce-144 Co-57

-2.OOE-01 1.90E+00 4.60E-01 2.20E+00 6.80E+00 8.50E-01 7.50E+00 2.30E+01 2.90E+00 I

wS WS WS L14647-01 L14647-01 L14647-01 11/17/2008 11/17/2008 11/17/2008 Co-58 Co-60 Cr-51 3.OOE-01

- 1.40E+00

-6.OOE+00 1.30E+00 1.30E+00 1.20E+01 4.60E+00 5.OOE+00 4.30E+01 I

wS L14647-01 11/17/2008 Cs-134 3.10E-01 9.30E-01 4.50E+00 wS WS wS L14647-01 L14647-01 L14647-01 11/17/2008 11/17/2008 11/17/2008 Cs-137 Fe-59 1-131 6.OOE-01

-1.90E+00 1.1OE+00 1.20E+00 3.OOE+00 3.80E+00 4.OOE+00 1.1OE+01 1.30E+01 I

ws I

L14647-01 11/17/2008 K-40 2.74E+02 2.70E+01 6.50E+0 1 wS LI14647-01 11/17/2008 La-140 -4.OOE-01 2.90E+00 1.1OE+01 WS L14647-01 11/17/2008 Mn-54 -I.OOE+00 1.30E+00 4.50E+00 wS LI14647-01 11/17/2008 Nb-95 8.OOE-01 1.80E+00 6.1OE+00 wS WS wS L14647-01 L14647-01 L14647-01 11/17/2008 11/17/2008 11/17/2008 Ru-103 Ru-106 Sb-124

-3.70E+00

-7.OOE+00

- 1.20E+00 1.60E+00 1.1OE+01 3.OOE+00 5.80E+00 4.10E+01 1.1OE+01 I

wS wS wS L14647-01 L14647-01 L14647-01 11/17/2008 11/17/2008 11/17/2008 Sb-125 Se-75 Zn-65

-3.70E+00 5.O0E-01 1.43E+01 3.1OE+00 1.60E+00 5.10E+00 1.IOE+01 5.30E+00 1.60E+01 I

ws L14647-01 11/17/2008 Zr-95 -2.70E+00 2.40E+00 8.70E+00 WS WS WS L14757-01 L14757-01 L14757-01 12/23/2008 12/23/2008 12/23/2008 AcTh-228 Ag-108m Ag-Il0m

-7.1 OE+00

-4.OOE-01

-2.40E+00 4.90E+00 I.OOE+00 1.50E+00 1.80E+01 3.70E+00 5.70E+00 I

wS wS ws L14757-01 L14757-01 L14757-01 12/23/2008 12/23/2008 12/23/2008 Ba-140 Be-7 Ce-I141 7.OOE-01

-1.70E+01 0.OOE+00 3.30E+00 1.1OE+OI 2.OOE+00 1.20E+01 4.OOE+01 6.90E+00 I

ws L14757-01 12/23/2008 Ce-144 -6.OOE-01 6.80E+00 2.30E+01 WS wS wS L14757-01 L14757-01 L14757-01 12/23/2008 12/23/2008 12/23/2008 Co-57 Co-58 Co-60 7.OOE-02

- 1.60E+00

-8.OOE-01 8.50E-01 1.20E+00 1.30E+00 2.90E+00 4.40E+00 4.70E+00 I

WS 4.20E+0 I WS wS wS L14757-01 L14757-01 L14757-01 12/23/2008 12/23/2008 12/23/2008 Cr-51 Cs-134 Cs-137

-9.OOE+00 3.OOE-01 7.OOE-01 1.20E+01 1.OOE+00 1.20E+00 4.50E+00 4.1OE+00 I

L14757-01 12/23/2008 Fe-59 2.50E+00 2.70E+00 9.20E+00 WS wS WS L14757-01 L14757-01 L14757-01 12/23/2008 12/23/2008 12/23/2008 1-131 K-40 La-140 7.60E+00 2.72E+02 7.OOE-01 4.40E+00 2.70E+01 3.30E+00 1.40E+01 6.60E+0 I 1.20E+01

I WS wS ws WS L14757-01 L14757-01 L14757-01 12/23/2008 12/23/2008 12/23/2008 Mn-54 Nb-95 Ru-103

-3.OOE-01 2.OOE-01 2.1OE+00 1.20E+00 1.60E+00 1.50E+00

4. 1OE+00 5.50E+00 5.OOE+00 I

L14757-01 12/23/2008 Ru-106 -2.OOE+00 1.1OE+0I 3.90E+01 wS ws wS L14757-01 L14757-01 L14757-01 12/23/2008 12/23/2008 12/23/2008 Sb-124 Sb-125 Se-75

-1.90E+00

-5.1 OE+00

-1.30E+00 3.30E+00 3.20E+00 1.40E+00 1.20E+01 1.1OE+01 4.80E+00 I

WS wS wS WS L14757-01 L14757-01 L14796-01 12/23/2008 12/23/2008 12/23/2008 Zn-65 Zr-95 H-3 4.30E+00

-1.70E+00

-5.70E+02 3.50E+00

2. 1OE+00 4.50E+02 1.1OE+01 7.70E+00 1.40E+03 I

L13982-04 5/27/2008 AcTh-228 4.20E+00 5.90E+00 2.OOE+01 WS L13982-04 5/27/2008 Ag-108m 5.OOE-02 8.60E-01 3.OOE+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

218 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) wS 2 L13982-04 5/27/2008 Ag-110m -4.OOE-01 1.50E+00 5.40E+00 wS 2 L13982-04 5/27/2008 Ba-140 -6.OOE-01 2.80E+00 1.00E+01 wS 2 L13982-04 5/27/2008 Be-7 -1.00E+00 8.90E+00 3.1OE+0I ws 2 L13982-04 5/27/2008 Ce-141 2.30E+00 1.50E+00 5.OOE+00 wS 2 L13982-04 5/27/2008 Ce-144 3 40E+00 5.20E+00 1.70E+01 ws 2 L13982-04 5/27/2008 Co-57 6.70E-01 6.50E-01 2.20E+00 wS 2 LI13982-04 5/27/2008 Co-58 -7.OOE-01 1.1OE+00 3.80E+00 ws 2 L13982-04 5/27/2008 Co-60 -1.20E+00 1.20E+00 4.30E+00 ws 2 L13982-04 5/27/2008 Cr-51 -7.70E+00 8.70E+00 3.1OE+01 wS 2 L13982-04 5/27/2008 Cs-134 1.90E+00 1.20E+00 4.1OE+00 ws 2 L 13982-04 5/27/2008 Cs-137 -7.OOE-01 9.40E-01 3.40E+00 wS 2 L13982-04 5/27/2008 Fe-59 2.20E+00 2.40E+00 8.20E+00 wS 2 L13982-04 5/27/2008 H-3 -1.50E+02 2.OOE+02 5.80E+02 ws 2 L13982-04 5/27/2008 1-131 -2.20E+00 2.60E+00 9.1OE+00 wS 2 L13982-04 5/27/2008 K-40 1.45E+02 2.80E+01 8.40E+01 ws 2 L13982-04 5/27/2008 La-140 -6.OOE-01 2.80E+00 1.00E+01 wS 2 L13982-04 5/27/2008 Mn-54 -4.00E+00 1.OOE+00 3.70E+00 ws 2 L13982-04 5/27/2008 Nb-95 -2.20E+00 1.40E+00 5.OOE+00 ws 2 L13982-04 5/27/2008 Ru-103 I.00E-0I 1.1 OE+00 3.90E+00 wS 2 LI3982-04 5/27/2008 Ru-106 3.50E+00 8.20E+00 2.80E+01 wS 2 L13982-04 5/27/2008 Sb-124 -3.OOE-01 2.90E+00 1.10E+01 wS 2 LI3982-04 5/27/2008 Sb-125 -3.90E+00 2.60E+00 9. IOE+00 ws 2 L13982-04 5/27/2008 Se-75 1.50E+00 1.50E+00 5.OOE+00 ws 2 L13982-04 5/27/2008 Zn-65 -2.50E+00 2.50E+00 9.OOE+00 wS 2 L13982-04 5/27/2008 Zr-95 -9.OOE-01 2.1OE+00 7.40E+00 ws 2 L14647-04 11/19/2008 AcTh-228 3.80E+00 7.40E+00 2.50E+01 ws 2 L14647-04 11/19/2008 Ag-108m -1.00E-01 1.30E+00 4.40E+00 wS 2 L14647-04. 11/19/2008 Ag-1 lOrn 1.OOE-01 2.20E+00 7.70E+00 ws 2 L 14647-04 11/19/2008 Ba-140 -4.OOE-01 4.OOE+00 1.50E+01 ws 2 L14647-04 11/19/2008 Be-7 7.OOE+00 1.30E+01 4.50E+01 ws 2 L14647-04 11/19/2008 Ce-141 -2.50E+00 2.30E+00 8.1OE+00 wS 2 L14647-04 11/19/2008 Ce-144 -8.30E+00 7.40E+00 2.60E+01 wS 2 L14647-04 11/19/2008 Co-57 2.90E-01 9.60E-01 3.20E+00 ws 2 L14647-04 11/19/2008 Co-58 -4.00E+00 1.60E+00 5.90E+00 wS 2 L14647-04 11/19/2008 Co-60 -4.OOE-01 1.80E+00 6.70E+00 ws 2 L14647-04 11/19/2008 Cr-51 1.70E+01 1.30E+01 4.30E+01 ws 2 L14647-04 11/19/2008 Cs-134 -2. 1OE+00 1.1 OE+00 5.20E+00 wS 2 L14647-04 11/19/2008 Cs-137 1.30E+00 1.40E+00 4.80E+00 wS 2 L14647-04 11/19/2008 Fe-59 2.40E+00 3.40E+00 1.20E+01 wS 2 L14647-04 11/19/2008 H-3 -1.70E+02 4.30E+02 1.30E+03 wS 2 L14647-04 11/19/2008 1-131 2. I OE+00 3.30E+00 1.10E+01 wS 2 L14647-04 11/19/2008 K-40 1.85E+02 3.10E+01 8.40E+0 I wS 2 L14647-04 11/19/2008 La-140 -4.OOE-01 4.OOE+00 1.50E+01 wS 2 L14647-04 11/19/2008 Mn-54 1.00E-01 1.60E+00 5.70E+00 wS 2 L14647-04 11/19/2008 Nb-95 8.OOE-01 1.90E+00 6.60E+00 ws 2 L14647-04 11/19/2008 Ru-103 -3.50E+00 1.60E+00 6.20E+00 wS 2 L14647-04 11/19/2008 Ru-106 -1.90E+01 1.40E+01 5.10E+01 ws 2 L14647-04 11/19/2008 Sb-124 2.60E+00 4.OOE+00 1.40E+01 wS 2 L14647-04 11/19/2008 Sb-125 -4.70E+00 3.90E+00 1.40E+01 wS 2 L 14647-04 11/19/2008 Se-75 -1.30E+00 1.60E+00 5.50E+00 wS 2 L14647-04 11/19/2008 Zn-65 -4.60E+00 4.50E+00 1.70E+01 ws 2 L14647-04 11/19/2008 Zr-95 3.OOE-01 2.40E+00 8.70E+00 ws 51 L13547-02 1/24/2008 AcTh-228 6.70E+00 2.50E+00 8.1OE+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 219

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I WS WS L13547-02 L13547-02 1/24/2008 1/24/2008 Ag-108m Ag-110m 9.OOE-02 7.20E-01 5.40E-01 8.80E-0 I 1.80E+00 2.90E+00 I

I WS L13547-02 1/24/2008 Ba-140 -7.OOE-01 1.30E+00 4.60E+00 WS L13547-02 1/24/2008 Be-7 2.60E+00 5.40E+00 1.80E+01 WS L13547-02 1/24/2008 Ce- 141 1.00E-01 1.50E+00 5.OOE+00 WS L13547-02 1/24/2008 Ce- 144 2.80E+00 3.60E+00 1.20E+01 WS WS WS L13547-02 L13547-02 L13547-02 1/24/2008 1/24/2008 1/24/2008 Co-57 Co-58 Co-60

-1.70E-01

-2.10E-01

-3.30E-01 4.80E-0 I 6.70E-01 6.80E-01 1.60E+00 2.30E+00 2.40E+00 I

WS L13547-02 1/24/2008 Cr-51 -8.OOE-01 6.40E+00 2.20E+01 WS WS WS L13547-02 L13547-02 L13547-02 1/24/2008 1/24/2008 1/24/2008 Cs-134 Cs-137 Fe-59 4.10E-0I

-9.10E-01

-1.20E+00 7.50E-01 6.70E-01 1.50E+00 2.60E+00 2.40E+00 5.30E+00 U

WS WS WS L13547-02 L13547-02 L13547-02 1/24/2008 1/24/2008 1/24/2008 1-131 K-40 La-140 2.OOE-01 3.3 1E+02

-7.OOE-01 1.40E+00 1.90E+01 1.30E+00 4.80E+00 4.60E+01 4.60E+00 I

WS L13547-02 1/24/2008 Mn-54 -1.00E+00 6.80E-0 I 2.40E+00 WS WS WS L13547-02 L13547-02 L13547-02 1/24/2008 1/24/2008 1/24/2008 Nb-95 Ru-103 Ru-106 1.50E+00

-2.30E+00

-8.OOE-01 8.10E-01 1.20E+00

6. 1OE+00 2.60E+00 4.20E+00 2.10E+01 I

WS WS WS L13547-02 L13547-02 L13547-02 1/24/2008 1/24/2008 1/24/2008 Sb-124 Sb-125 Se-75 5.OOE-01 5.OOE-01 1.26E+00 1.40E+00 1.70E+00 7.90E-0 I 4.90E+00 5.60E+00 2.60E+00 I

WS L13547-02 1/24/2008 Zn-65 5.OOE-01 1.60E+00 5.50E+00 WS WS WS L13547-02 L13640-02 L13640-02 1/24/2008 2/25/2008 2/25/2008 Zr-95 AcTh-228 Ag-108m 3.00E-01 1.00E-01

-9.OOE-01 1.20E+00 5.90E+00 1.30E+00

4. 1OE+00 2.20E+01 4.80E+00 I

WS WS WS L13640-02 L13640-02 L13640-02 2/25/2008 2/25/2008 2/25/2008 Ag-110m Ba-140 Be-7

-1.20E+00 5.OOE-01 7.OOE+00 2.10E+00 2.70E+00 1.30E+01 8.OOE+00 1.00E+01 4.40E+01 I

WS L13640-02 2/25/2008 Ce-141 -1.40E+00 2.50E+00 8.70E+00 WS WS WS L13640-02 L13640-02 L13640-02 2/25/2008 2/25/2008 2/25/2008 Ce-144 Co-57 Co-58 1.17E+01 5.00E-01 7.OOE-01 9.40E+00 1.20E+00 1.70E+00 3.10E+01 4.OOE+00 6.10E+00 I

WS WS WS L13640-02 L13640-02 L 13640-02 2/25/2008 2/25/2008 2/25/2008 Co-60 Cr-51 Cs-134 1.80E+00 1.00E+00

-5.OOE-01 1.90E+00 1.60E+01 1.1OE+00 6.60E+00 5.60E+01 5.30E+00 I

WS L13640-02 2/25/2008 Cs-137 1.00E+00 1.80E+00 6.20E+00 WS WS WS L13640-02 L13640-02 L13640-02 2/25/2008 2/25/2008 2/25/2008 Fe-59 1-131 K-40

-2.40E+00

-2.OOE+00 2.67E+02 2.70E+00 3.10E+00 3.70E+01 1.1OE+01 1.1OE+01 8.50E+01

I WS WS WS L13640-02 L13640-02 L13640-02 2/25/2008 2/25/2008 2/25/2008 La- 140 Mn-54 Nb-95 5.OOE-01

-6.OOE-01

-8.OOE-01 2.70E+00 1.70E+00 2.OOE+00 1.00E+01 6.40E+00 7.30E+00 I

WS WS WS WS LI3640-02 LI13640-02 L13640-02 L13640-02 2/25/2008 2/25/2008 2/25/2008 2/25/2008 Ru-103 Ru-106 Sb-124 Sb-125

-1.50E+00 7.OOE+00

-7.90E+00 4.40E+00 1.70E+00 1.50E+01 4.90E+00 4.50E+00 6.40E+00 5.30E+01 2.OOE+01 1.50E+01 i

WS WS WS WS L13640-02 L13640-02 L13640-02 2/25/2008 2/25/2008 2/25/2008 Se-75 Zn-65 Zr-95

-3.40E+00

-8.OOE+00 0.OOE+00 1.80E+00 4.30E+00 2.50E+00 6.80E+00 1.70E+01 9.40E+00 i

L13737-02 3/25/2008 AcTh-228 2.1OE+00 6.70E+00 2.40E+01 WS L13737-02 3/25/2008 Ag-108m 4.OOE-01 1.20E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 4.20E+00 i

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 220 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE . NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

WS L13737-02 3/25/2008 Ag-110m 6.OOE-01 2.OOE+00 7.30E+00 WS L13737-02 3/25/2008 Ba-140 - 1.90E+00 3.OOE+00 1.20E+01 WS LI 3737-02 3/25/2008 Be-7 -1.IOE+01 1.40E+01 5.00E+01 WS L13737-02 3/25/2008 Ce-141 *2.90E+00 2.40E+00 8.OOE+00 WS L13737-02 3/25/2008 Ce-144 -3.40E+00 9.OOE+00 3.10E+01 WS L13737-02 3/25/2008 Co-57 1.00E-01 1.20E+00 4.OOE+00 WS L13737-02 3/25/2008 Co-58 2.40E+00 1.50E+00 5.OOE+00 WS L13737-02 3/25/2008 Co-60 3.OOE-01 1.70E+00 6.30E+00 WS L13737-02 3/25/2008 Cr-51 1.00E+00 1.50E+01 5.1OE+0I WS L13737-02 3/25/2008 Cs-134 -2.OOE-01 1.1OE+00 5.40E+00 WS L13737-02 3/25/2008 Cs-137 -6.OOE-01 1.70E+00 6.OOE+00 WS L13737-02 3/25/2008 Fe-59 -2.90E+00 3.50E+00 1.40E+01 WS L13737-02 3/25/2008 1-131 4.OOE+00 3.1OE+00 1.00E+01 WS L13737-02 3/25/2008 K-40 2.07E+02 3.50E+01 9.30E+01 WS L13737-02 3/25/2008 La-140 -1.90E+00 3.OOE+00 1.20E+01 WS L13737-02 3/25/2008 Mn-54 -4.OOE-01 1.60E+00 5.80E+00 WS L13737-02 3/25/2008 Nb-95 -3. 1OE+00 2.OOE+00 7.70E+00 WS L13737-02 3/25/2008 Ru-103 1.70E+00 1.50E+00 4.90E+00 WS L13737-02 3/25/2008 Ru-106 - 1.90E+01 1.40E+01 5.50E+01 WS L13737-02 3/25/2008 Sb-124 2.OOE+00 4.OOE+00 1.50E+01 WS L13737-02 3/25/2008 Sb-125 2.20E+00 4.20E+00 1.40E+01 WS L13737-02 3/25/2008 Se-75 1.00E+00 1.80E+00 6.1OE+00 WS L13737-02 3/25/2008 Zn-65 6.OOE-01 3.40E+00 1.20E+01 WS L13737-02 3/25/2008 Zr-95 -3.50E+00 2.50E+00 9.90E+00 ws L13848-02 3/25/2008 -7.50E+02 4.40E+02 H-3 1.30E+03 WS L13865-02 4/23/2008 AcTh-228 4.90E+00 7.80E+00 2.70E+0I WS L13865-02 4/23/2008 Ag-108m -2.30E+00 1.30E+00 4.90E+00 ws L13865-02 4/23/2008 Ag-I 10m -4.80E+00 2.40E+00 9.30E+00 ws L1 3865-02 4/23/2008 Ba-140 1.30E+00 3.90E+00 1.40E+01 ws L13865-02 4/23/2008 Be-7 7.OOE+00 1.30E+01 4.60E+01 WS L13865-02 4/23/2008 Ce-141 -6.60E+00 2.90E+00 1.00E+01 ws L13865-02 4/23/2008 Ce-144 4.40E+00 7.70E+00 2.60E+01 ws L13865-02 4/23/2008 Co-57 2.60E-01 9.90E-01 3.40E+00 ws L13865-02 4/23/2008 Co-58 1.50E+00 1.70E+00 5.70E+00 ws L13865-02 4/23/2008 Co-60 1.1 OE+00 1.80E+00 6.30E+00 ws L13865-02 4/23/2008 Cr-51 -6.OOE+00 1.40E+01 4.90E+01 ws L13865-02 4/23/2008 Cs-134 -2.OOE-01 1.20E+00 5.60E+00 ws ws L13865-02 4/23/2008 Cs-137 0.OOE+00 1.50E+00 5.50E+00 WS L13865-02 4/23/2008 Fe-59 1.80E+00 3.90E+00 1.40E+01 WS wS L113865-02 4/23/2008 1-131 1.40E+00 3.90E+00 1.40E+01 ws L13865-02 4/23/2008 K-40 3.39E+02 4.OOE+01 9.70E+01 ws L13865-02 4/23/2008 La-140 1.30E+00 3.90E+00 1.40E+01 WS L13865-02 4/23/2008 Mn-54 4.OOE-01 1.70E+00 5.90E+00 ws LI3865-02 4/23/2008 Nb-95 - 1.40E+00 1.90E+00 7.20E+00 ws L13865-02 4/23/2008 Ru-103 -7.OOE-01 1.70E+00 6.1 OE+00 ws L13865-02 4/23/2008 Ru-106 -4.OOE+00 1.40E+01 5.I0E+01 ws L13865-02 4/23/2008 Sb-124 -8.70E+00 4.40E+00 1.90E+01 WS L13865-02 4/23/2008 Sb-125 -I.50E+00 4.20E+00 1.50E+01 ws L13865-02 4/23/2008 Se-75 2.20E+00 1.60E+00 5.40E+00 ws L13865-02 4/23/2008 Zn-65 2.60E+00 3.70E+00 1.30E+01 WS L13865-02 4/23/2008 Zr-95 -2.40E+00 3.30E+00 1.20E+01 wS L13982-02 5/28/2008 AcTh-228 1.17E+0I 4.50E+00 1.90E+01 L13982-02 5/28/2008 Ag-108m -3.10E-01 9.40E-01 3.30E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 221

I Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

I WS L13982-02 5/28/2008 Ag-1 10m 1.1OE+00 1.40E+00 4.70E+00 WS WS WS L13982-02 L13982-02 L13982-02 5/28/2008 5/28/2008 5/28/2008 Ba-140 Be-7 Ce- 141

-5.OOE-01 I. 14E+OI 2.90E+00 3.30E+00 9.70E+00 1.80E+00 1.20E+01 3.20E+01 5.90E+00 I

WS L13982-02 5/28/2008 Ce-I144 - 1.00E+00 4.60E+00 1.60E+01 WS WS WS L13982-02 L13982-02 5/28/2008 5/28/2008 Co-57 Co-58 5.30E-01 4.OOE-01 6.30E-01 1.50E+00 2.1OE+00 5.1OE+00 I

L13982-02 5/28/2008 Co-60 1.1 OE+00 1.40E+00 4.70E+00 WS WS WS L13982-02 L13982-02.

L13982-02 5/28/2008 5/28/2008 5/28/2008 Cr-51 Cs-134 Cs-137

-2.OOE+/-00

-2.30E-01

-2.OOE-01 1.10E+01 8.10E-01 1.101E+00 3.70E+01 3.90E+00 3.90E+00 I

WS L13982-02 5/28/2008 Fe-59 -2.60E+00 2.90E+00 I.10E+01 WS WS WS L13982-02 L13982-02 5/28/2008 5/28/2008 1-131 K-40 4.30E+00 3.3 1E+02 3.60E+00 3.20E+01 1.20E+01 7.80E+01

I L13982-02 5/28/2008 La-140 -5.OOE-01 3.30E+00 1.20E+01 WS WS WS L13982-02 L13982-02 L13982-02 5/28/2008 5/28/2008 5/28/2008 Mn-54 Nb-95 Ru-103

-1.50E+00

-3.70E+00

-2.1 OE+00 1.20E+00 1.60E+00 1.30E+00 4.30E+00 6.10E+00 4.80E+00 I

WS L13982-02 5/28/2008 Ru-106 -2.OOE+00 1.00E+01 3.60E+01 WS WS WS L13982-02 L13982-02 5/28/2008 5/28/2008 Sb-124 Sb-125 3.20E+00 6.00E-01 1.90E+00 3.30E+00 2.90E+00 1.20E+00 1.1 OE+0 I 9.80E+00 4.101E+00 I

L13982-02 5/28/2008 Se-75 WS WS WS L13982-02 L13982-02 L14095-02 5/28/2008 5/28/2008 6/24/2008 Zn-65 Zr-95 AcTh-228

-2.90E+00 1.1OE+00

-1.30E+00 2.90E+00 2.1OE+00 4.90E+00 1.10E+01 7.40E+00 1.70E+01 I

WS -1.00E-01 1.00E+00 3.50E+00 I

L14095-02 6/24/2008 Ag-108m WS L14095-02 6/24/2008 Ag-110m I.OOE-01 1.60E+00 5.70E+00 WS LI14095-02 6/24/2008 Ba-140 3.50E+00 3.30E+00 1.1OE+01 WS L14095-02 6/24/2008 Be-7 -1.10E+01 I.i0E+01 4.00E+01 WS WS WS L14095-02 L14095-02 L14095-02 6/24/2008 6/24/2008 6/24/2008 Ce-141 Ce-144 Co-57

3. 1OE+00 5.20E+00

-2.80E-01 2.OOE+00 6.50E+00 8.40E-01 6.70E+00 2.20E+01 2.90E+00 I

WS L14095-02 6/24/2008 Co-58 5.OOE-01 1.1OE+00 3.90E+00 WS WS WS L14095-02 L14095-02 6/24/2008 6/24/2008 Co-60 Cr-51 1.00E-01

-8.OOE+00

-1.80E+00 1.20E+00 1.40E+01 1.20E+00 4.20E+00 4.80E+0 I 4.40E+00 I

L14095-02 6/24/2008 Cs-134 WS WS WS L14095-02 L14095-02 L14095-02 6/24/2008 6/24/2008 6/24/2008 Cs-137 Fe-59 1-131 9.00E-01 1.80E+00 5.50E+00 1.20E+00 2.80E+00 4.40E+00 3.90E+00 9.50E+00 1.50E+01 I

WS L14095-02 6/24/2008 K-40 2.99E+02 2.60E+01 6.10E+01

WS WS WS L14095-02 L14095-02 6/24/2008 6/24/2008 La-140 Mn-54 3.50E+00

- 1.20E+00 2.50E+00 3.30E+00 1.101E+00 1.60E+00 1.10E+01 3.9013+00 5.20E+00 I

L14095-02 6/24/2008 Nb-95 WS WS WS L14095-02 L14095-02 L14095-02 6/24/2008 6/24/2008 6/24/2008 Ru-103 Ru-106 Sb-124

-I.20E+00

- 1.40E+01

-8.OOE-01 1.30E+00 1.00E+01 3.20E+00 4.70E+00 3.70E+01 1.20E+01 I

WS L14095-02 6/24/2008 Sb-125 -2.40E+00 3.101E+00 1.101E+01 WS WS WS L14095-02 L14095-02 6/24/2008 6/24/2008 Se-75 Zn-65

-6.00E-01

-4.40E+00 4.OOE+00 1.30E+00 2.90E+00 2.1OE+00 4.70E+00 1.10E+01 6.80E+00 I

L14095-02 6/24/2008 Zr-95 WS WS WS L14193-02 L14197-02 L14197-02 6/24/2008 7/22/2008 7/22/2008 H-3 AcTh-228 Ag- 108m

-3. 1OE+02

-5.70E+00

-3.OOE-01 4.30E+02 7.OOE+00 1.70E+00 1.30E+03 2.60E+01 5.90E+00 I

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement I

222

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) ws L14197-02 7/22/2008 Ag-1 10m -1.80E+00 2.20E+00 8.30E+00 wS L14197-02 7/22/2008 Ba-140 -3.50E+00 3.70E+00 1.50E+01 ws L14197-02 7/22/2008 Be-7 1.10E+01 1.50E+01 5.10E+01 WS L14197-02 7/22/2008 Ce-141 -1.60E+00 2.60E+00 9.20E+00 WS L14197-02 7/22/2008 Ce-144 1.47E+01 9.50E+00 3.IOE+0 1 wS L14197-02 7/22/2008 Co-57 1.40E+00 1.20E+00 4.1OE+00 wS L14197-02 7/22/2008 Co-58 1.50E+00 1.90E+00 6.70E+00 wS L14197-02 7/22/2008 Co-60 2.30E+00 1.60E+00 5.30E+00 wS L14197-02 7/22/2008 Cr-51 2.80E+01 1.70E+01 5.50E+01 ws L14197-02 7/22/2008 Cs-134 -1.70E+00 1.30E+00 6.1OE+00 ws L14197-02 7/22/2008 Cs-137 -2.OOE+00 1.90E+00 7.20E+00 ws L14197-02 7/22/2008 Fe-59 4.30E+00 3.80E+00 1.30E+01 ws L14197-02 7/22/2008 .1-131 -2.30E+00 3.70E+00 1.30E+01 ws L14197-02 7/22/2008 K-40 2.85E+02 3.80E+01 9.I0E+01 ws L14197-02 7/22/2008 La- 140 -3.50E+00 3.70E+00 1.50E+01 WS WS L14197-02 7/22/2008 Mn-54 2.OOE-01 1.60E+00 5.80E+00 wS L14197-02 7/22/2008 Nb-95 1.40E+00 2.30E+00 7.80E+00 ws L14197-02 7/22/2008 Ru-103 -1.00E+00 2.OOE+00 7.20E+00 ws L14197-02 7/22/2008 Ru-106 8.OOE+00 1.70E+01 5.90E+01 wS L14197-02 7/22/2008 Sb-124 -4.30E+00 4.1OE+00 1.70E+01 wS L14197-02 7/22/2008 Sb-125 6.70E+00 4.90E+00 1.60E+01 wS L14197-02 7/22/2008 Se-75 1.70E+00 2.OOE+00 6.90E+00 wS L14197-02 7/22/2008 Zn-65 -2.04E+01 4.80E+00 2.I0E+01 wS L14197-02 7/22/2008 Zr-95 -5.30E+00 2.90E+00 1.20E+01 wS L14293-02 8/18/2008 AcTh-228 -5.30E+00 6.1OE+00 2.30E+01 wS L14293-02 8/18/2008 Ag-108m 4.OOE-01 1.40E+00 4.90E+00 ws L14293-02 8/18/2008 Ag-110m -2.50E+00 2. 1 OE+00 8.20E+00 wS L14293-02 8/18/2008 Ba-140 -2.60E+00 3.30E+00 I .30E+01 WS L14293-02 8/18/2008 Be-7 -6.OOE+00 1.30E+01 4.70E+01 WS L14293-02 8/18/2008 Ce- 141 1.80E+00 2.70E+00 9. 1OE+00 ws L14293-02 8/18/2008 Ce-I144 1.1 OE+00 9. 1OE+00 3.10E+01 WS L14293-02 8/18/2008 Co-57 7.OOE-01 1.1 OE+00 3.90E+00 ws L14293-02 8/18/2008 Co-58 -1.80E+00 1.40E+00 5.60E+00 wS L14293-02 8/18/2008 Co-60 1.90E+00 1.90E+00 6.70E+00 ws L14293-02 8/18/2008 Cr-51 -I.80E+01 1.50E+01 5.30E+01 wS L14293-02 8/18/2008 Cs-134 8.OOE-01 1.1 OE+00 5.20E+00 WS ws L14293-02 8/18/2008 Cs-137 1.50E+00 1.70E+00 5.80E+00 wS ws L14293-02 8/18/2008 Fe-59 4.40E+00 3.1OE+00 1.00E+01 ws L14293-02 8/18/2008 1-131 -2.30E+00 3.40E+00 1.20E+01 L14293-02 8/18/2008 K-40 2.39E+02 3.60E+01 9.30E+01 ws L14293-02 8/18/2008 La- 140 -2.60E+00 3.30E+00 1.30E+01 WS L14293-02 8/18/2008 Mn-54 -3.OOE+00 1.60E+00 6.30E+00 WS L14293-02 8/18/2008 Nb-95 -2.30E+00 I.80E+00 6.90E+00 wS WS L14293-02 8/18/2008 Ru-103 -2.OOE+00 1.60E+00 6.20E+00 ws L14293-02 8/18/2008 Ru-106 -4.80E+01 I .60E+01 6.30E+01 ws L14293-02 8/18/2008 Sb-124 4.70E+00 3.30E+00 1.1 OE+0I ws L14293-02 8/18/2008 Sb-125 -4.20E+00 4.50E+00 1.60E+01 wS L14293-02 8/18/2008 Se-75 1.00E-01 I .80E+00 6.30E+00 WS L14293-02 8/18/2008 Zn-65 7.OOE+00 6. 1OE+00 2.OOE+01 ws L14293-02 8/18/2008 Zr-95 -5.20E+00 2.60E+00 1.00E+01 wS 9/24/2008 AcTh-228 wS L14421-02 2.30E+00 7.1OE+00 2.50E+01 ws L14421-02 9/24/2008 Ag-108m 8.OOE-01 1.40E+00 4.90E+00 L 14421-02 9/24/2008 Ag-110m -3. 1OE+00 2.20E+00 8.80E+00

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 223

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 I SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg) I WS WS L14421-02 L14421-02 9/24/2008 9/24/2008 Ba-140 Be-7 8.10E+00 0.OOE+00 4.30E+00 1.40E+01 1.40E+01 4.90E+01 I

WS L14421-02 9/24/2008 Ce- 141 -4.30E+00 2.50E+00 8.80E+00 WS WS WS LI14421-02 L14421-02 L14421-02 9/24/2008 9/24/2008 9/24/2008 Ce- 144 Co-57 Co-58

-3.40E+00 8.30E-01

-1.30E+00 7.30E+00 8.80E-01 1.80E+00 2.60E+01 3.OOE+00 6.90E+00 I

WS WS WS L14421-02 L14421-02 L14421-02 9/24/2008 9/24/2008 9/24/2008 Co-60 Cr-51 Cs-134 8.OOE-01 7.OOE+00

-I.IOE+00 2.20E+00 1.40E+01 1.20E+00 7.90E+00 4.70E+01 6.1OE+00 I

WS L14421-02 9/24/2008 Cs-137 -6.OOE-01 1.80E+00 6.60E+00 WS WS WS L14421-02 L14421-02 L14421-02 9/24/2008 9/24/2008 9/24/2008 Fe-59 1-131 K-40

-1.10E+00

-1.00E-01 2.95E+02 3.90E+00 2.80E+00 4.10E+01 1.40E+01 9.80E+00 1.00E+02

I WS WS WS L14421-02 L14421-02 L14421-02 9/24/2008 9/24/2008 9/24/2008 La-140 Mn-54 Nb-95 8.10E+00 8.OOE-01

-4.30E+00 4.30E+00 1.70E+00 2.20E+00 1.40E+-01 6.OOE+00 8.40E+00 I

WS L14421-02 9/24/2008 Ru-103 -1.80E+00 1.80E+00 6.70E+00 WS WS WS L14421-02 L14421-02 L14421-02 9/24/2008 9/24/2008 9/24/2008 Ru-106 Sb-124 Sb-125 1.10E+01

-2.60E+00 5.OOE+00 1.50E+01 4.50E+00 4.40E+00 5.30E+01 1.80E+01 1.50E+01 I

WS WS WS L14421-02 L14421-02 LI4421-02 9/24/2008 9/24/2008 9/24/2008 Se-75 Zn-65 Zr-95

-4.70E+00 5.40E+00 2.OOE+00 2.80E+00 7.60E+00 2.90E+00 1.00E+01 2.60E+01 1.00E+01 I

WS L14514-02 9/24/2008 H-3 -4.1 OE+02 4.40E+02 1.30E+03 WS WS WS L14556-02 L14556-02 L14556-02 10/27/2008 10/27/2008 10/27/2008 AcTh-228 Ag-108m Ag-1 10m

-5.1 OE+00 1.OOE-01

-2.80E+00 8.40E+00 1.40E+00 2.90E+00 3.I0E+01 5.1OE+00

1. 1OE+01 U

WS WS WS L14556-02 L14556-02 LI4556-02 10/27/2008 10/27/2008 10/27/2008 Ba-140 Be-7 Ce-141

-4.30E+00 8.OOE+00 1.00E-01 3.50E+00 1.40E+01 2.40E+00 1.50E+01 4.90E+01 8.30E+00 I

WS L14556-02 10/27/2008 Ce- 144 -1.20E+00 9.40E+00 3.30E+01 WS WS WS L14556-02 L14556-02 L14556-02 10/27/2008 10/27/2008 10/27/2008 Co-57 Co-58 Co-60 2.OOE-01

-1.40E+00 0.OOE+00 1.1OE+00 1.60E+00 2.1OE+00 3.80E+00 6.1OE+00 8.OOE+00 I

WS WS WS L14556-02 L14556-02 L14556-02 10/27/2008 10/27/2008 10/27/2008 Cr-51 Cs-134 Cs-137

-2.OOE+01 1.20E+00

-1.60E+00 1.50E+01 1.30E+00 1.80E+00 5.40E+01 6.40E+00 7.OOE+00 I

WS L14556-02 10/27/2008 Fe-59 -2.40E+00 4.30E+00 1.60E+01 WS L14556-02 10/27/2008 1-131 1.80E+00 3.40E-00 1.20E+01 WS WS WS LI4556-02 L14556-02 10/27/2008 10/27/2008 K-40 La- 140 3.07E+02

-4.30E+00 4.40E+01 3.50E+00 1.1OE+02 1.50E+01 I

WS WS L14556-02 L14556-02 L14556-02 10/27/2008 10/27/2008 10/27/2008 Mn-54 Nb-95 Ru-103 1.00E+00

-1.60E+00

-1.40E+00 1.80E+00 1.90E+00 1.70E+00 6.50E+00 7.40E+00 6.40E+00 I

WS L14556-02 10/27/2008 Ru-106 0.OOE+00 1.60E+01 5.80E+01 WS WS WS L14556-02 L14556-02 L14556-02 10/27/2008 10/27/2008 10/27/2008 Sb-124 Sb-125 Se-75

-6.OOE+00

-4.00E-01 4.OOE+00 5.30E+00 4.20E+00 1.90E+00 2.20E+01 1.50E+01 6.OOE+00 I

WS WS WS L14556-02 L14556-02 L14647-02 10/27/2008 10/27/2008 11/24/2008 Zn-65 Zr-95 AcTh-228

-7.30E+00

-3. 1OE+00 1.30E+00 4.20E+00 2.70E+00 8.30E+00 1.70E+01 1.1OE+01 3.OOE+01 I

WS L14647-02 11/24/2008 Ag-108m 1.30E+00 1.50E+00 5.30E+00 WS L14647-02 11/24/2008 Ag-1 IOm -3.OOE-01 2.70E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation) 9.80E+00 I

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 224 I

Seabrook Nuclear Power Station Radiological Environmental Monitoring Program -2008 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) wS L14647-02 11/24/2008 Ba-140 -3.40E+00 3.70E+00 1.50E+01 ws L14647-02 11/24/2008 Be-7 -2.30E+01 1.50E+01 5.70E+0I ws L14647-02 11/24/2008 Ce-I141 -2.60E+00 2.80E+00 9.70E+00 wS L14647-02 11/24/2008 Ce-144 - 1.66E+01 9.90E+00 3.50E+01 wS L14647-02 11/24/2008 Co-57 -1.00E-01 1.20E+00 4.20E+00 wS ws LI14647-02 11/24/2008 Co-58 1.20E+00 2.1OE+00 7.30E+00 ws L14647-02 11/24/2008 Co-60 -2.OOE+00 2.40E+00 9.20E+00 ws L14647-02 11/24/2008 Cr-51 2.10E+01 1.50E+01 4.90E+01 WS L14647-02 11/24/2008 Cs-134 -4.OOE-01 1.30E+00 6.1OE+00 ws L14647-02 11/24/2008 Cs-137 3.60E+00 1.80E+00 5.70E+00 ws L14647-02 11/24/2008 Fe-59 -1.20E+00 4.50E+00 1.70E+01 ws L14647-02 11/24/2008 1-131 -I.00E-01 3.OOE+00 1.10E+01 ws L14647-02 11/24/2008 K-40 3.60E+02 4.60E+01 1.00E+02 ws L14647-02 11/24/2008 La-140 -3.40E+00 3.70E+00 1.50E+01 ws L14647-02 11/24/2008 Mn-54 -2.1 OE+00 1.90E+00 7.30E+00 ws L14647-02 11/24/2008 Nb-95 -5.20E+00 2.20E+00 8.90E+00 ws L14647-02 11/24/2008 Ru- 103 -1.90E+00 2.OOE+00 7.40E+00 ws L14647-02 11/24/2008 Ru-106 7.OOE+00 1.70E+01 6.00E+01 ws L14647-02 11/24/2008 Sb-124 1.00E+00 5.IOE+00 1.90E+01 ws L14647-02 11/24/2008 Sb-125 4.OOE-01 4.90E+00 1.70E+01 ws L14647-02 11/24/2008 Se-75 6.OOE-01 1.80E+00 6.30E+00 ws L14647-02 11/24/2008 Zn-65 -2.40E+00 4.70E+00 1.80E+01 WS L14647-02 11/24/2008 Zr-95 5.30E+00 3.80E+00 1.30E+01 WS L14757-02 12/29/2008 AcTh-228 -3.30E+00 7.30E+00 2.60E+01 ws L14757-02 12/29/2008 Ag-108m 1.70E+00 1.20E+00 4.OOE+00 ws L14757-02 12/29/2008 Ag-1I Om -1.80E+00 2.40E+00 8.90E+00 WS L14757-02 12/29/2008 Ba-140 2.70E+00 3.80E+00 1.30E+01 ws L14757-02 12/29/2008 Be-7 -1.00E+00 1.30E+01 4.50E+01 ws L14757-02 12/29/2008 Ce-141 1.00E-01 2.20E+00 7.40E+00 wS L14757-02 12/29/2008 Ce-I144 2.70E+00 7.70E+00 2.60E+01 wS L14757-02 12/29/2008 Co-57 1.1 8E+00 9.80E-01 3.30E+00 ws L14757-02 12/29/2008 Co-58 -1.70E+00 1.50E+00 5.90E+00 ws L14757-02 12/29/2008 Co-60 8.OOE-01 1.90E+00 6.70E+00 WS L14757-02 12/29/2008 Cr-51 -2.10E+01 1.20E+01 4.60E+01 ws WS L14757-02 12/29/2008 Cs-134 2.30E+00 1.40E+00 5.50E+00 ws L14757-02 12/29/2008 Cs-137 -2.OOE-01 1.80E+00 6.30E+00 WS L14757-02 12/29/2008 Fe-59 6.30E+00 3.40E+00 1.IOE+01 ws L14757-02 12/29/2008 1-131 1.1 OE+00 3.OOE+00 1.00E+01 WS L14757-02 12/29/2008 K-40 2.45E+02 4.OOE+01 1.1OE+02 wS L14757-02 12/29/2008 La-140 2.70E+00 3.80E+00 1.30E+01 wS L14757-02 12/29/2008 Mn-54 5.OOE-01 1.60E+00 5.60E+00 L14757-02 12/29/2008 Nb-95 2.80E+00 1.80E+00 6.OOE+00 ws L14757-02 12/29/2008 Ru-I103 -3.30E+00 1.60E+00 6.1OE+00 ws L14757-02 12/29/2008 Ru-106 -3.50E+01 1.50E+01 5.80E+01 ws L14757-02 12/29/2008 Sb-124 -6.1 OE+00 4.80E+00 1.90E+01 ws L14757-02 12/29/2008 Sb-125 4.90E+00 3.90E+00 1.30E+01 ws L14757-02 12/29/2008 Se-75 -5.OOE-01 1.60E+00 5.70E+00 ws L14757-02 12/29/2008 Zn-65 -4.80E+00 4.OOE+00 1.50E+01 ws L14757-02 12/29/2008 Zr-95 -8.OOE-01 2.70E+00 9.80E+00 ws L14796-02 12/29/2008 H-3 -8.50E+02 4.40E+02 1.40E+03

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

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 225

SBK-L-09090, 2008 Annual Radiological Environmental Operating Report

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SBK-L-09090, 2008 Annual Radiological Environmental Operating Report

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