Text

Annual Radiological Environ Operating Rept for 1995
	ML20107K500
Person / Time
Site:	Seabrook
Issue date:	12/31/1995
From:	Diprofio W; NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
	NYN-96027, NUDOCS 9604260182
	Download: ML20107K500 (218)
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i North North Atlantic Energy Service Corporation P.O. nox 300 -

Atlantic seahroet, Nii o3874 d (603) 474-9521 The Northeast Utilities System

R 221986 Docket No. 50-443 NYN-96022 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Seabrook Station 1995 Annual Radiolocical Environmental Ooerating Report North Atlantic Energy Service Corporation (North Atlantic) has enclosed the 1995 Annual Radiological Environmental Operating Report for Seabrook Station. This report summarizes the implementation of the North Atlantic's Radiological Environmental Monitoring Program (REMP). Attachment I to the enclosure is the complete data set for the REMP samples.

This report is being submitted pursuant to the requirements of Seabrook Station Technical Specification 6.8.1.3. ,

Should you require further information regarding this matter, please contact Mr. Anthony M. Callendrello, Licensing Manager, at (603) 474-9521, extension 2751.

Very truly yours, NORTH ATLANTIC ENERGY SERVICE CORP.

._ d /GA W. A. DiProfio Unit Director cc without enclosure:

Mr. Thomas T. Martin, Region i Administrator Mr. Albert W. De Agazio, Sr. Project Manager Mr. John B. MacDonald, Sr. NRC Resident inspector 9604260182 951231 i PDR ADOCK 05000443 R PDR f 62 )/

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ENCLOSURE I TO NYN-96027 l

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SEABROOK STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT For the Period January - December 1995 April 1995 Prepared By:

North Atlantic Energy Service Corporation Environmental Sciences Seabrook Station i

and Yankee Atomic Electric Company Environmental Engineering Department Bolton, Massachusetts 01740 )

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1 Section Page EXECUTIVE

SUMMARY

11 LIST OF TABLES iii LIST OF FIGURES iv

1.0 INTRODUCTION

............................................ 1 2.0 ENVIRONMENTAL MONITORING PROGRAM........................ 2 3.O

SUMMARY

OF RADIOLOGICAL ENVIRONMENTAL DATA.............. 13 A. Air Particulate...................................... 14 B. Charcoal Filter...................................... 19 C. M11k................................................. 21 D. Surface Water........................................ 26 E. Ground Water......................................... 29 F. Sediment............................................. 33 G. Fish................................................. 36 H. Lobsters............................................. 39 I. Shellfish............................................ 42 J. Irish Moas........................................... 45 K. Food Crops........................................... 48 K. Direct Radiation..................................... 51 4.0 QUALITY ASSURANCE PROGRAM............................... 63 5.0 LAND USE CENSUS......................................... 71 1

6.0 REFERENCES

.............................................. 73 1

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Executive Summary The Radiological Environmental Monitoring Program for Seabrook Station operated without interruption for the period of January through December 1995. During the year, samples collected as part of the radiological environmental program included air particulates, charcoal filters, milk, ground water, surface (sea) water, sediment, fish, lobsters, shellfish, vegetation'and direct radiation. Radiological analysis on all samples included that for gamma and/or beta radiation. Any variability observed in the data is based primarily on a number of natural variables that can influence background radiation. The radionuclides identified as naturally occurring are K-40, Be-7, Th-232 and its daughter products. Cesium-137 was detected in milk as the result of fallout from atmospheric nuclear weapons testing. The levels detected are consistent with those measured during the preoperational phase of the monitoring program.

During 1995, Seabrook Station had a capacity factor of 23.2%. This includes a scheduled refueling outage of 37.5 days. The capacity factor excluding the outage was 92.7%.

During 1995, the maximum whole body dose to the hypothetically exposed individual was 0.0032 ndllirem. 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 dose represents 0.01%

of the whole body dose limit for a member of the public as set forth in 40CFR190. The complete calculational methodology is submitted to the NRC as part of the Annual Radioactive Effluent Release Report.

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a LIST OF TABLES-Number Title Page

2.1 . Radiological Environmental Monitoring Program 3 2.2 Radiological Environmental Monitoring Locations 4 3.1 Environmental TLD Measurements................ 52 j 4.1 Summary of Process Control Analysis Results... 65 4.2 Summary of EPA Intercomparison Analysis Results 66 4.3 Summary of EPA Intercomparison Program Results.. 68 4.4 Summary of Blind Duplicate Samples submitted.. 69 l

4.5 Summary of Blind Duplicate Results............ 70 i 5.1 Land Use Census Results....................... 72 ,

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LIST OF FIGURES Humber Title Page 2.1 Radiological Environmental Monitoring Locations Within 4 Kilometers of Seabrook Station............... 7 2.2 Radiological Environmental Monitoring Locations l Between 4 Kilometers and 12 Kilometera from l Seabrook Station.................. ................... 8 2.3 Radiological Environmental Monitoring Locations outside 12 Kilometers of Seabrook Station............. 9 4 l

2.4 Direct Radiation Monitoring Locations Within 4 Kilometers of Seabrook Station........................ 10 2.5 Direct Radiation Monitoring Locations between j 4 Kilometers and 12 Kilometers from Seabrook Station.. 11 2.6 Direct Radiation Monitoring Locations outside 12 Kilometers of Seabrook Station ..................... 12 i

, 3.1 Gross Beta Measurements of Air Particulate Filters..... 15 1 3.2 Gross Beta Quarterly Average Air Particulate Filters... 16 3.3 Cesium-137 in Milk (Stations TM-04, 09, 10, 15)........ 22 3

3.4 cesium-137 in Milk (Stations TM-16, 20, 21)............ 23 3.5 Gross Beta Measurements of Ground Water................ 29 3.6 Environmental Radiation Measurements, TL 01-05......... 54 3.7 Environmental Radiation Measurements, TL 06-10......... 55 3.0 Environmental Radiation Measurements, TL 11-15......... 56 3.9 Environmental Radiation Measurements, TL 16-20......... 57 3.10 Environmental Radiation Measurements, TL 21-25......... 58 3.11 Environmental Radiation Measurements, TL 26-30......... 59 3.12 Environmental Radiation Measurements, TL 31-35......... 60 2

3.13 Environmental Radiation Measurements, TL 3 6- 4 0. . . . . . . . . 61 3.14 Environmental Radiation Measurements, TL 41-47......... 62 iv f

-ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 1.0- Introduction The North Atlantic Energy Service Corporation's (NAESCO) Radiological Environmental Monitoring Program 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 i 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.

North Atlantic Energy Service Corporation collected the terrestrial samples. Normandeau Associates, Inc. collected the marine and sediment samples. After the initial processing, the samples were sent to the Yankee Atomic Environmental Laboratory (YAEL) in Westboro, Massachusetts for further processing and radionuclide analysis. The YAEL also processed the environmental thermoluminescent dosimeters (TLDs).

This report is a summary of the findings of the Radiological Environmental Monitoring Program for 1995. It is being provided in compliance with plant Technical Specification 6.8.1.3.

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2.0 Environmental Monitoring Program In this section, Table 2.1 outlines the monitoring program as required by Plant Technical Specification 3/4.12.1. Table 2.2 lists the operational sampling stations and their specific locations (distances

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

a 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)

TL Direct Radiation (TLD)

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

-Quarterly Composite Gamma spectroscopy Charcoal Filter (CF) -Weekly I-131 Milk (TM) -Monthly; bimonthly Gamma spectroscopy when animals I-131 are on pasture Surface (Sea) Water (WS) -Monthly Gamma spectroscopy

-Quarterly Composite H-3(composite)

Sediment (SE) -Semiannually Gamma spectroscopy Fish & Invertebrates -Seasonal or Gamma spectroscopy

( Fil, FIA, MU) -Semiannually Direct Radiation (TL) -Quarterly Integrated gamma exposure l

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Table 2.2 Radiological Environmental Monitoring Locations 1995 Distance

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From Direction Station Code ' Station Plant From (Msdia - Sta. No.) Descriptic.n Zone * (km) Plant AP/CF-Ol+ PSNH Barge Landing Area 1 2.7 ESL AP/CF-02+ Hampton Marina 1 2.7 E AP/CF-03+ Southwest Boundary 1 0.8 SW AP/CF-04+ West Boundary 1 1.0 W AP/CF-05 Winnacunnet High School 1 4.0 NNE AP/CF-06+ Ceorgetown Substation 2 24.0 SSW AP/CF-07 PSNH Substation 1 5.7 NNW AP/CF-08 E&H Substation 1 3.4 SSE TM-04+ Salisbury, MA 1 5.2 SW TM-09+ Hampton, NH 1 5.3 NNW TM-10+ Hampton Falls, NH 1 4.8 WNW TM-15+ Hampton Falls, NH 1 7.0 NW TM-16 Kensington, NH 1 7.7 WNW TM-20+ Rowley, MA 2 16.3 S TM-21 North Andover, MA 2 29.0 SW WG-01 Seabrook Town Wells 1 5.6 W

WG-04 Seabrook Station Well No.4 1 1.0 N WG-13 Seabrook Station Well No.13 1 1.0 N WS-01+ Hampton-Discharge Area 1 5.3 E WS-51+ Ipswich Bay 2 16.9 SSE SE-02 Hampton-Discharge Area 1 5.3 E SE-07+ Hampton Beach 1 3.1 E SE-08 Seabrook Beach 1 3.2 ESE SE-52 Ipswich Bay 1 16.9 SSE SE-57 Plum Island Beach 2 15.9 SSE

< FH-03+ Hampton-Discharge Area 1 4.5 ESE FH-53+ Ipswich Bay 2 16.4 SSE HA-04+ Hampton-Discharge Area 1 5.5 E im-54+ Ipswich 2 17.2 SSE MU-06+ Hampton-Discharge Area 1 5.2 E MU-09 Hampton Harbor 1 2.6 E MU-56+ Ipswich Bay 2 17.4 SSE MU-59 Plum Island 2 15.8 SSE i

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Tablo 2.2 (Cont'd)

Radiological Environmental Monitoring Locations 1995 Distance From Direction '

Station Code Station Plant From (Media - Sta. No.) Description Zone * (km) Plant TL-l+ Brimmer's Lane, I 1.1 N Hampton Falls TL-2+ Landing Road, Hampton. I 3.2 NNE TL-3+ Glade Path, Hampton Beach I 3.1 NE TL-4+ Island Path, Hampton Beach I 2.4 ENE TL-5+ Harbor Road, Hampton Beach I 2.7 E TL-6+ PSNH Barge Landing Area I 2.7 ESE TL-7+ Cross Road, Seabrook Beach I 2.6 SE TL-8+ Farm Lane, Seabrook I 1.1 SSE TL-9+ Farm Lane, Seabrook I 1.1 S r TL-10+ Site Boundary Fence I 1.0 SSW TL-11+ Site Boundary Fence I 1.0 SW ;

TL-12+ Site Boundary Fence I 1.0 WSW TL-13+ Inside site Boundary I 0.8 W TL-14+ Trailer Park, Seabrook I 1.1 WNW TL-15+- Brimmer's Lane, I 1.4 NW Hampton Falls TL-16+ Brimmer's Lane I 1.1 NNW Hampton Falls TL-17+ South Road, North Hampton 0 7.9 N TL-18+ Mill Road, North Hampton 0 7.6 NNE TL-19+ Appledore Avenue, 0 7.9 NE North Hampton TL-20+ Ashworth Avenue, 0 3.4 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 7.6 W TL-2 8 Rte. 150, Kensington 0 7.9 WNW TL-29 Frying Pan Ln., Hampton Falls 0 7.4 NW TL-30 Route 150, Hampton 0 7.9 NNW 1

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Table 2.2 (Cont'd)

Radiological Environmental Monitoring Locations 1995 Distance From Direction Station Code Station Plant From (Media - Sta. No.) Description Zone * (km) Plant TL-31+ Alumni Drive, Hampton S 4.0 NNE TL-32+ Seabrook Elementary School S 1.9 S TL-33+ Dock Area, Newburyport S 9.7 S TL-34+ Bow Street, Sxeter S 12.1 UW TL-35+ Lincoln Ackerman School S 2.4 NNW TL-36+ Route 97, Georgetown 2 22.0 SSW TL-37+ Plaistow, NH 2 26.0 WSW TL-38+ Hampstead, NH 2 29.0 W TL-39+ Epping, NH 2 27.0 NW TL-40+ Newmarket, NH 2 24.0 NNW TL-41+ Portsmouth, NH 2 21.0 NNE TL-42+ Ipswich, MA 2 27.0 SSE TL-43 Education Center S 0.3 ENE TL-44 Rocks Road Landing S 0.5 SW

, TL-45' Hampton Fire Station S 4.5 NE TL-46 Seabrook Beach S 2.9 ESE TL-47 Hampton Falls, NH S 4.2 WNW l *1 = Indicator Stations; 2 = Control Stations; O = Outer Ring TLD; I = Inner Ring TLD; S = Special Interest TLD

+ = Sample Locations Required by the Off-Sjte Dose Calculation Manual (ODCM) 6 M

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3.0L Summary of Radiological Environmantal Data The following pages summarize the analytical results of the environmental samples which were collected in 1995. Each environmental media category is presented as a separate subsection. A discussion of the sampling requirements and results for each program is followed by a table which summarizes the data. Listed at the top of each table are the units of measurement for each medium. The left hand column contains the 4

radionuclide which is being reported, total number of analyses of that radionuclide, and the number of measurements which exceed ten times the yearly average of control measurements. The latter are classified as ,

"non- routine" measurements. The next column lists the Lower Limit of

Detection (LLD) for those radionuclides which have detection capability requirements specified in the off-Site Dose Calculation Manual.

l 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 plant influences are called " Control" or " Zone 2" stations. Direct radiation (TLD) monitoring locations are subdivided into site boundary, inner ring, and outer ring (emergency response) stations.

A set of statistical parameters is calculated for each radionuclide.

This set of statistical parameters includes separate analyses for (1) the indicator stations, (2) the control stations, and (3) the station having the highest annual mean concentration for that radionuclide. For d

each of these three groups of data, these parameters are as follows:

The mean value of all concentrations.

The standard error of the mean.

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The lowest and highest concentration.

The number of positive measurements (a concentration which is greater than the a posteriori LLD for that analysis) divided by the j total number of measurements.

Each single radioactivity measurement 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 ,

4 possible uncertainties in the analytical procedure. I Attachment I contains the data for the samples collected in 1995. The I results are organized by sample type, within each sample type listing i the data is alphabetical by nuclide, within each nuclide listing the data is chronologically arranged by end date (date of sample collection). l l

The radionuclide value concentrations (charcoal media) have been corrected for radioactive decay to the end of the collection. The ;

j airborne radioiodine (charcoal) concentrations have been calculated i assuming a constant flow rate and concentration throughout the collection period and correcting for decay while sampling as well as between sample collection termination and analysis.

1 Pursuant to ODCM requirements, any concentration below the LLD for its l

, analysis is reported as "not detected". These values are set to zero for averaging purposes. Where a range of values is reported in the tables of

this section, values less than the a posteriori LLD for the analysis are 1

reported as zero.

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A) Air Particulate Air monitoring stations were established at a total of eight locations (five are required by the offsite Dose Calculation manual). Seven of these locations are indicators, while the remaining one is a control station.

Airborne particulates are collected by passing the air through a glass-fiber filter. These filters are collected weekly and held for at least 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> before being analyzed for gross-beta activity (indicated as GR-B in tables) to allow for the decay of radon daughter products. Quarterly composite air filters from each location are 3

analyzed for gamma emitting radionuclides. In 1995, naturally occurring Be-7 was the only nuclide detected. All gross beta samples were 1 i collected as required, l i

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4 i RGURE 11 l GROSSEETA MEASUREMENTS OF AIR PARTICULATE FILTERS SEABROOK STATION 4 i 1 0.08 0.08 l

0.07- -0.07 0.06- -0.06 l jij 0.05- -0.05 0.04 - -0.04

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. I a AP-01 Barge Landing Area

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

-o- AP-04 W Boundary

--v- AP-05 Winnacunnet High School l x AP-06 Georgetown Substation (Control)

-+- AP-07 PSNH Substation, Hampton

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

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RGURE3.2 GROSSBETA ON AIR PARTICULATE RLTERS QUARTERLYAVERAGES SEABROOK STATION 0.08 0.08 0.06- - 0.06 5 !

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i ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEASROOK STATION, SEAS 400K, NM (JANUARY DECEMBER 1995)

MEDIUM: AIR PARTICULATE UNITS: PCl/CU. M l

IND CONTROL STAT !

e...I.CATOR

..... ..S..T STAT!DN WI.TH

... AT. IONS

.......... HIGHEST MEAN

...........*** e............ IONS AADIONUCL1 DES MEAN MEAN MEAN (h0. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (WON ROUTINE)* LLD NO. DETECTED ** NO. NO. DETECTE0** Wo. DETECTED ** !

.......................... ..................... I GR B (416) .01 ( 1.7 i 0.0)E 2 05 ( 1.8 t 0.1)E -2 ( 1.7 i 0.1)E 2

( 0) ( 3.0 - 40.3)E -3 ( 4.0 - 40.2)E -3 ( 3.5 - 36.1)E 3

(562/364)* *( 52/ 52)* *( 52/ 52)*

BE 7 ( 32) ( 9.4 i 0.4)E 2 03 ( 1.0 t 0.2)E 1 ( 8.8 i 0.9)E *2 1

( 0) ( 5.6 - 14.0)E 2 ( 6.6 - 14.0)E -2 ( 6.2 - 10.0)E 2 j

( 28/ 28)* *( 4/ 4)* *( 4/ 4)* j i

K-40 ( 32) ( 1.7 2 0.8)E 3 03 ( 4.71 1.6)E 3 ( 4.3 i 1.4)E -3

( 0) ( 5.7 - 11.4)E 3 ( 1.7 - 8.3)E -3 ( 5.1 - 594.0)E -5

( 1/ 28)* *( 0/ 4)* *( 0/ 4)*

l CR 51 ( 32) ( 9.5 10.6)E 4 02 ( 4.1 2 1.2)E 3 ( 4.7 i 31.7)E -4 )

( 0) ( -1.0 - 1.0)E 2 ( 2.2 - 7.5)E 3 ( -9.8 - 3.5)E 3 i

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

MN-54 ( 32) ( 1.7 i 5.4)E -5 05 ( 1.3 2 2.4)E -4 ( -6.4 i 6.3)E -5

( 0) ( -4.9 - 7.1)E -4 ( -2.7 - 7.1)E -4 ( 1.7 - 1.1)E -4 '

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

C0 57 ( 32) ( -2.0 t 2.5)E -5 04 ( 9.8 2 2.7)E -5 ( -2.2 1 4.8)E 5

( 0) ( 3.3 - 1.9)E -4 ( 4.8 - 17.2)E 5 ( -1.3 - 1.0)E -4

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

Co-58 ( 32) ( 7.5 1 6.3)E 5 04 ( 4.0 1 1.7)E -4 ( -2.0 t 2.6)E -4

( 0) ( 4.6 - 8.1)E 4 ( -9.0 - 66.6)E 5 ( 7.4 - 5.1)E -4

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

FE 59 ( 32) ( 7.4 1 31.5)E 5 03 ( 1.3 0.3)E -3 ( 1.72 2.6)E -4

( 0) ( 4.6 - 2.3)E -3 ( 5.2 - 18.3)E -4 ( -9.0 - 1.9)E 4 l

( 0/ 28)* *( 0/ 4)* *( 0/ 4)* l Co-60 ( 32) ( 2.1 1 5.8)E 5 08 ( 2.1 1 1.5)E -4 ( 1.5 1 1.8)E 4

( 0) ( -8.0 - 5.6)E -4 ( - 1. 7 - 5.6)E 4 ( 2.4 - 5.7)E -4 I

( 0/ 28)* *( 0/ 4)* *( 0/ 4)* l 1

2N 65 ( 32) ( -3.3 1 1.5)E 4 03 ( 2.7 i 3.0)E -4 ( 7.5 i 4.2)E -4

( 0) ( 1.8 - 1.0)E -3 ( -5.1 - 9.6)E 4 ( 1.8 - 0.0)E 3

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

SE 75 ( 32) ( 3.1 i 6.1)E 5 03 ( 4.4 1.6)E -4 ( 1.9 1 0.8)E -4 j

( 0) ( 5.5 - 7.6)E -4 ( 8.6 - 75.7)E 5 ( 3.0 - 36.4)E -5

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

Non-routine refers to the tuber of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sample analyses yielding detectable measurements (i.e.. greater than three (3) standard ,

deviations) is indicated with *( )*.

i 17 1 l

-.~ _ _ - _. .. ...

ENVIRONMENTAL RADIOLOGICAL PROGRAM $UMMARY SEABROOK STATION, $EABROOK, NN (JANUARY DECEMBER 1995)

MEDIUM: AIR PARTICULATE UNITS: PC1/CU. M INDICATOR STATIONS seeeeeeeeeeeeeeeee $...

. TAT.

.. ION.W..ITH eeeeeeeeeeeeeee CON..TRO.L.ST HIGHE$f MEAN

.. . . e**e .. AT I.ONS RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD No. DETECTED ** No. No. DETECTED ** NO. DETECTED **

2R 95 ( 32) ( 1.4 2 1.5)E -4 05 ( 6.3 2 0.8)E 4 ( -2.6

2.6)E -4

( 0) ( -1.9 - 1.6)E 3 ( 4.9 - 7.9)E 4 ( 1.0 - 0.0)E -3

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

AG 110M( 32) ( 5.6 2 6.0)E 5 05 ( 2.6 2 2.4)E 4 ( -5.4 i 18.4)E -5

( 0) ( -6.7 - 9.8)E -4 ( 1.5 - 98.0)E 5 ( -5.6 - 2.6)E 4

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

RU 103 ( 32) ( 1.0 2 0.8)E 4 01 ( 3.4 i 1.0)E 4 ( 3.1 1 2.5)E -4

( 0) ( -8.0 - 7.8)E 4 ( 9.0 - 57.6)E -5 ( -1.0 - 9.9)E -4

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

RU 106 ( 32) ( 6.5 1 418.4)E 6 01 ( 1.9 1 1.1)E -3 ( -3.9 t 10.6)E 4

( 0) ( -4.2 - 5.0)E -3 ( 7.0 - 498.0)E -5 ( -2.6 - 2.2)E -3

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

55 124 ( 32) ( 1.7 i 1.8)E -4 06 ( 4.7

9.3)E -4 ( 4.7 9.3)E 4

( 0) ( -2.2 - 1.5)E -3 ( -1.4 - 3.0)E 3 ( -1.4 - 3.0)E -3

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

l 131 ( 32) ( 4.1 1 2.1)E 3 03 ( 5.4 i 3.9)E 3 ( 2.1 2 2.9)E -3

( 0) ( -3.5* - 1.3:e -2 ( 1.2 - 12.8)E -3 ( 8.1 - 5.8)E 3

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

C$-134 ( 32) .35 ( 1.8 i 0.8;i -4 06 ( 2.0 i 1.L)E 4 ( 2.0 i 1.8)E -4

( 0) ( -1.4 - 0.4;? 3 ( 2.3 - 5.2)E -4 ( 2.3 - 5.2)E 4

( 0/ 2P/,* *( 0/ 4)* *( 0/ 4)*

CS 137 ( 32) .06 ( 2.1 i 52.1)E 6 03 ( 2.0 1 1.1)E -4 ( -4.3 i 10.9)E -5

( 0) ( 8.9 - 6.6)E 4 ( 2.7 - 48.5)E -5 ( 2.6 - 2.5)E 4

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

4 BA*140 ( 32) ( 3.4 1 6.1)E -4 05 ( 2.0 2 1.7)E -3 ( -2.0 1 2.1)E 3

( 0) ( -5.7 - 7.6)E -3 ( -7.8 - 70.8)E 4 ( -8.1 - 1.2)E 3 l

( 0/ 28)* *( 0/ 4)* *( 0/ 4)* I CE 141 ( 32) ( 6.1 1 12.4)E 5 08 ( 6.2 2 2.0)E 4 ( 1.6 i 4.2)E 4

( 0) ( -1.2 - 1.7)E -3 ( 2.9 - 11.9)E 4 ( 1.1 - 0.7)E 3

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

CE 144 ( 32) ( 5.0 1 208.8)E -6 07 ( 6.4 t 2.1)E -4 ( 2.9 t 37.3)E -5 1

( 0) ( 2.0 - 2.4)E -3 ( 1.1 - 10.9)E -4 ( 9.9 - 7.3)E -4

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

TM 232 ( 32) ( 2.0 t 1.5)E -4 03 ( 8.6 4.6)E -4 ( 3.2 i 2.8)E -4 i

( 0) ( 1.1 - 2.2)E 3 ( 1. 7 - 22.0)E -4 ( 2.2 - 10.4)E 4

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

I

Non routine refers to the ruber of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sample analyses yleiding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*,

18

B) Charcoal Filters Charcoal filter cartridges are in series with the air particulate glass-fiber filters. Monitoring stations were established at a total of eight locations (five are required by the ODCM). Seven of these are indicators and one is a control. Charcoal filters from the air sampling stations were collected and analyzed weekly for I-131 activity.

During 1995, no I-131 was detected on charcoal filters.

I l

19 j

ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEABROOK STATION, SEA 8R00K, NH (JANUARY

DECEMBER 1995)

MEDIUM: CHARCOAL CARTRIDGE UNITS: PCI/CU. M INDICATOR TATIONS STATION W HIGHEST MEAN eee** **..S.eeeeee. ..........I.TH......e**....e CO.NTRO.L..

. ... STATIONS

..eeeee.

RADIONUCLIOES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUT!NE)* LLD NO. DETECTED ** NO. NO. DETECTED ** NO. DETECTED" 1 131 (416) .07 ( -3.2 1 5.6)E .4 06 ( 9.5 i 14.9)E 4 ( 9.5 1 14.9)E -4

( 0) ( 6.4 - 2.5)E 2 ( 2.3 - 2.6)E -2 ( 2.3 - 2.6)E 2

( 0/364)* *( 0/ 52)* *( 0/ 52)*

Non routine refers to the rumber of separate measurements whi .h were greater than ten (10) times the average backgraand for the period of the report.

- The fraction r f sample analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

20

I

! C) Milk Milk samples were collected every two weeks during the pasture season and monthly at other times. samples are analyzed for I-131 and 4

gamma-emitting radionuclides.

Detectable concentrations of Cs-137 was measured in several samples collected in 1995. It has been shown in the preoperational program that this nuclide is the result of atmospheric nuclear weapons testing that persists in the environment. The levels of Cs-137 detected in 1995 are consistent with that detected in the pre-operational phase.

Potassium-40 is a naturally occurring nuclide detected in the milk samples.

i 21

1 FIGURE 3.3 CESIUM-137IN MLK SEABROOK STATION ]

l 30 _

30

1 25 ' -25 20 -20 l

a 152 -15 g : I oa 10 -10

1 5-~ -5 l l

1 0- .. -0 l

-5 ~ . ,

, . . ~ -5 Jan Apr Jul Oct Jan i 1995

--o- TM44 Dairy Farm, Salisbury, MA v TM-09 Dairy Farm, Hampton, NH

--v- TM-15 Goat Herd, Hampton Falls, NH 22

l l

FIGURE 3.4 CESIUM-137IN MLK SEABROOK STATION 30 _ 30 25 -25 20 -20 m 15) ~-15 g :

oa '

10 7 10

~

-5 5-~

0- -0

-5 . . , . . , . .

, . . -5 Jan Apr Jul Oct Jan i 1995 l

l

c. TM-16 Goat Herd, Kensington, NH

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

--v- TM-21 Dairy Farm, N. Andover, MA (Control) 1 1

I I

I 23

- -l

r i

i i

ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEASROOK STATION, SEASROOK, NW (JANUARY DECEMSER 1995)

MEDIUM: MILK UNITS: PCI/KG INDICATOR STATIONS STATION WITH HIGHEST MEAN CONTROL STATIONS

- ee eeeeeeeeeeee seeeeeeee****eeeeeeeeeeee e eeeeeeeeeeeeee i RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD No. DETECTED ** NO. No. DETECTED ** NO. DETECTED **

BE 7 (120) ( 1.3 1 1.3)E O 15 ( 3.7 i 2.0)E O ( 2.0 i 1.8)E O

( 0) ( 3.8 - 2.5)E 1 ( 1.0 - 2.4)E 1 ( 2.2 - 3.3)E 1

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

K 40 (120) ( 1.5 t 0.0)E 3 16 ( 1.8 t 0.0)E 3 ( 1.3 i 0.0)E 3

( 0) ( 1.2 - 2.2)E 3 ( 1.4 - 2.2)E 3 ( 1.2 - 1.5)E 3

( 80/ 80)* *( 20/ 20)* *( 40/ 40)*

CR 51 (120) ( -1.2 1.6)E 0 09 ( 1.6 2 3.2)E D ( -2.9 i 2.2)E O

( 0) ( 3.8 - 3.5)E 1 ( 2.0 - 3.5)E 1 ( 3.5 - 2.6)E 1

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

MN 54 (120) ( 3.9 2 1.7)E 1 16 ( 1.8 2 3.1)E *1 ( 1.6 1 1.9)E -1

( 0) ( 3.6 - 3.1)E O ( -3.0 - 2.9)E O ( 4.1 - 1.7)E O

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

CO 57 (120) ( 2.1 1 1.4)E 1 09 ( 4.6 1 1.8)E 1 ( 3.6 2 11.1)E 2

( 0) ( 2.8 - 4.4)E O ( -1.2 - 2.1)E 0 ( 1.2 - 2.0)E O

( 0/ 60)* *( 0/ 20)* *( 0/ 40)*

Co 58 (120) ( 3.5 t 1.8)E 1 21 ( 4.1 2 2.9)E 1 ( 2.7 t 21.2)E -2

( 0) ( 4.6 - 3.2)E O ( 1.7 - 3.0)E 0 ( -2.6 - 3.0)E O

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

FE 59 (120) ( 2.8 i 6.0)E 1 21 ( 2.9 t 1.1)E O ( 1.3 1 0.7)E O

, ( 0) ( 1.7 - 1.1)E 1 ( 5.5 - 13.9)E O ( 7.1 - 13.9)E O

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

CO 60 (120) ( 6.2 2 19.5)E -2 20 ( 8.6 t 3.8)E 1 ( 6.9 t 3.0)E 1

( 0) ( -5.8 - 3.4)E 0 ( -2.4 - 4.4)E O ( -4.2 - 5.0)E O

( 0/ 60)* *( 0/ 20)* *( 0/ 40)*

ZN 65 (120) ( 1.6 i 0.5)E O 20 ( 1.3 t 10.3)E 1 ( 1.2 2 710.5)E 3

( 0) ( 1.2 - 1.1)E 1 ( 6.0 - 8.1)E O ( 9.6 - 8.1)E O

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

SE 75 (120) ( -1.7 i 2.2)E -1 21 ( 4.0 1 3.9)E 1 ( 4.5 2 27.1)E 2

( 0) ( 7.6 - 3.3)E 0 ( 3.6 - 3.0)E O ( 3.9 - 3.0)E O

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

ZR 95 (120) ( 4.1 3.4)E -1 16 ( 1.1 2 0.6)E O ( 3.4 2 4.2)E 1

( 0) ( -5.6 - 7.4)E 0 ( 2.9 - 7.2)E 0 ( 4.8 - 6.5)E O

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

Non routine refers to the mmber of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of senple analyses yielding detectable measurements (1.e., greater than three (3) standard deviations) is indicated with *( )*.

24

l I

l ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEABROOK STATION, SEASROOK, NH (JANUARY DECEM3ER 1995)

MEDIUM MILK UNITS: PCl/KG IND STATION WITH HIGHEST MEAN e...ICATOR

....... .. S.T

...AT. IONSe eeeeee** eeeeeeeeeeeeee CON T

...... ROL..S..TA.T

. ... IONS RADIONUCLIDES MEAN MEAN MEAN i (20. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (BON ROUTINE)* LLD N0. DETECTED ** bO. Wo. DETECTED ** Wo. DETECTED **

AG 110M(120) ( -6.0 t 28.5)E 2 16 ( 5.9 2 5.1)E 1 ( 2.3

3.5)E -1

( 0) ( 1.0 - 0.5)E 1 ( 3.4 - 5.2)E O ( 4.1 - 6.2)E O J

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

RU 103 (120) ( 9.1 t 2.0)E 1 09 ( -4.6 2 3.8)E -1 ( -1.2 1 0.3)E 'O

( 0) ( 4.6 - 4.6)E 0 ( 3.4 - 4.2)E O ( -4.6 - 3.8)E O

( 0/ B0)* *( 0/ 20)* *( 0/ 40)*

RU 106 (120) ( 4.2 1 17.0)E 1 15 ( 6.4 t 4.2)E 0 ( 3.9 t 2.0)E O

( 0) ( 2.8 - 5.4)E 1 ( 2.2 - 5.4)E 1 ( -3.5 - 1.8)E 1

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

$8 124 (120) ( 2.8 t 4.0)E 1 16 ( 7.7 t 7.3)E -1 ( -1.1 2 0.5)E O

( 0) ( -9.8 - 8.4)E O ( 5.2 - 8.4)E O ( 8.4 - 6.0)E O i

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

I 131 (120) 1. ( 2.7 i 0.9)E 2 16 ( 4.3 1 2.0)E 2 ( 4.8 i 12.8)E -3

( 0) ( 1.1 - 2.6)E 1 ( 1.1 - 2.4)E -1 ( -1.5 - 3.0)E 1

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

CS 134 (120) 15. ( 9.1 1 2.1)E 1 21 ( 1.1 t 4.0)E 1 ( 1.9 t 2.9)E -1

( 0) ( -8.1 - 2.2)E 0 ( 3.5 - . 1)E O ( 3.5 - 3.1)E O

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

CS-137 (120) 18. ( 2.9 0.2)E O 04 ( 3.7 2 0.6)E O ( 1.9 i 0.4)E O

( 0) ( 1.9 - 9.9)E O ( 1.4 - 9.9)E O ( 1.3 - 10.4)E O

( 12/ 80)* *( 5/ 20)* *( 2/ 40)*

SA 140 (120) 15. ( 1.4 2 2.6)E 1 04 ( 4.2 i 4.5)E 1 ( -5.8 t 3.5)E -1

( 0) ( 6.5 - 7.2)E O ( -2.3 - 7.2)E O ( 5.4 - 3.8)E O j

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

CE 141 (120) ( 1.2 t 35.3)E 2 09 ( 5.6 7.0)E -1 ( 4.2 t 3.6)E -1

( 0) ( 10.0 - 6.7)E O ( 3.5 - 6.7)E O ( -5.6 - 4.4)E 0

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

CE 144 (120) ( 7.6 2 10.6)E 1 04 ( 4.2 1 2.5)E O ( 5.8 2 12.1)E 1

( 0) ( 1.7 - 3.0)E 1 ( 1.7 - 3.0)E 1 ( 2.5 - 1.4)E 1 1

I *( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

TH 232 (120) ( 1.6 i 0.7)E 0 09 ( 2.8 1 1.2)E O ( 1.1 t 1.0)E O

( 0) ( ~2.2 - 1.6)E 1 ( -5.5 - 12.4)E O ( -1,1 - 1.6)E 1

( 0/ 80)* *( 0/ 20)* *( 0/ 40)*

Non routine refers to the r:unber of separate measurements which were greater than ten (10) times the average background for the period of the report.

" The fraction of sample analyses yletding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

l 25

D) Surface Water Surface water (sea water) grab samples are required at two locations monthly. A gamma analysis is performed on each sample. A tritium analysis is performed on the quarterly composite of these samples, sea Water sample (WS-51) was not collected from Ipswich Bay (control) during November. This was do to rough seas and weather that continued for the entire collection period.

The only radionuclide detected in 1995 was naturally occurring K-40.

l l

l

. 26

I I

l I'

4 i a :

i ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEASROOK STATION, SEASROOK, NN 1 (JANUARY DECEMBER 1995)

MEDIUM: SEAWATER UNITS: PCl/KG i

STATION WITH NIGNEST MEAN

. .INDICATOR

- eeeeeeeeeeee STATIONSeeeeeeeeeeeeeeeeeeeeeeeee CONTRO..L.S.TA.T.

... .. ... IONS 4 RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE i (NON ROUTINE)* LLD NO. DETECTED ** NO. NO. DETECTE0** NO. DETECTED **

]

1 i BE*7 ( 23) ( 2.0 i 1.7)E O 01 ( 2.0 1 1.7)E 0 ( 1.1

2.0)E 0

! ( 0) ( -6.7 - 11.5)E O ( 6.7 - 11.5)E O ( 1.4 - 0.6)E 1

!, *( 0/ 12)* *( 0/ 12)* *( 0/ 11)* ,

j K 40 ( 23) ( 3.0 t 0.1)E 2 01 ( 3.0 t 0.1)E 2 ( 2.7

0.1)E 2 2

( 0) ( 2.2 - 3.6)E 2 ( 2.2 - 3.6)E 2 ( 2.3 - 3.1)E 2

( 12/ 12)* *( 12/ 12)* *( 11/ 11)*

j i CR 51 ( 23) ( 1.6 2 35.7)E 1 51 ( 6.7 2 32.2)E 1 ( 6.72 32.2)E -1

( 0) ( 1.4 - 2.5)E 1 ( 1.4 - 2.5)E 1 ( 1.4 - 2.5)E 1

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

MN 54 ( 23) 15. ( -4.7 i 3.2)E -1 01 ( 4.7 2 3.2)E -1 ( 9.1 2 2.0)E -1 j ( 0) ( 2.5 - 0.8)E O ( 2.5 - 0.8)E O ( ~1.9 - 0.0)E O

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

I Co 57 ( 23) ( 7.5 1 340.5)E -3 01 ( 7.5 1 340.5)E -3 ( 4.3 2 2.4)E 1

( 0) ( 2.2 - 1.e)E O ( 2.2 - 1.6)E O ( 2.1 - 0.6)E O

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

Co 58 ( 23) 15. ( 5.9 t 3.1)E 1 51 ( 2.2 1 3.9)E 1 ( 2.2 2 3.9)E -1

. ( 0) ( 2.8 - 0.7)E O ( 1.6 - 2.2)E O ( 1.6 - 2.2)E O 4

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

FE 59 ( 23) 30. ( -1.6 i 8.8)E 1 51 ( 1.4 1 0.9)E O ( 1.4 i 0.9)E O

( 0) ( -5.0 - 5.3)E O ( -4.6 - 4.5)E O ( 4.6 - 4.5)E O

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

Co 60 ( 23) 15. ( 2.4 1 4.0)E 1 01 ( 2.4 1 4.0)E 1 ( 3.9 19.3)E ~2 d

( 0) ( 3.0 - 2.0)E O ( 3.0 - 2.0)E O ( 1.1 - 1.0)E O

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

4 2N 65 ( 23) 30. ( 1.6 0.5)E 0 51 ( -1.5 2 0.6)E O ( 1.5 t 0.6)E O

( 0) ( 5.3 - 1.8)E O ( 4.9 - 1.0)E O ( -4.9 - 1.0)E O

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

SE 75 ( 23) ( 3.9 1 3.9)E 1 51 ( 1.9 i 3.0)E -1 ( -1.9 1 3.0)E 1 1

( 0) ( 3.5 - 1.2)E O ( 1.8 - 1.5)E O ( 1.8 - 1.5)E 0

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

ZR 95 ( 23) 15. ( 3.0 t 5.1)E 1 51 ( 5.5 2 4.8)E 1 ( 5.5 t 4.8)E *1 4

( 0) ( -2.1 - 3.2)E 0 ( 2.2 - 3.0)E O ( 2.2 - 3.0)E O

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

Mon routine refers to the ruuber of seperate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sample analyses yletding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

4 4

W 27

ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEASR00K $TATION, SEASROOK, NH (JANUARY DECEMBER 1995)

MEDIUM: SEAWATER UNITS: PCl/KG IMolCATOR STATIONS STATION WITH HIGHEST MEAN CONTROL STATIONS eseeeeeeeeeeeee**e eeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeee RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (h0N ROUTINE)* LLD MO. DETECTE0** NO. No. DETECTED ** NO. DETECTED **

AG 110M( 23) ( 1.9 1 4.1)E 1 51 ( 7.2 2 34.6)E 2 ( 7.2 i 34.6)E 2

( 0) ( 2.5 - 2.2)E 0 ( 2.9 - 1.1)E O ( -2.9 - 1.1)E O

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

RU 103 ( 23) ( 1.2 i 0.4)E O 51 ( 1.2 1 0.3)E 0 ( 1.2 2 0.3)E O

( 0) ( 2.9 - 1.1)E O ( 2.7 - 0.0)E O ( 2.7 - 0.0)E O

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

RU 106 ( 23) ( 1.4 1 3.0)E O 51 ( 1.8 t 2.1)E O ( 1.8 i 2.1)E O

( 0) ( -1.6 - 1.9)E 1 ( -1.4 - 1.3)E 1 ( 1.4 - 1.3)E 1

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

58 124 ( 23) ( 5.9 i 6.8)E 1 51 ( 8.7 t 7.4)E 1 ( 8.7 i 7.4)E 1

. ( 0) ( 3.1 - 4.5)E O ( -3.9 - 3.9)E O ( 3.9 - 3.9)E O

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

I 131 ( 23) 15. ( 1.5 2 11.5)E 1 01 ( 1.5 11.5)E 1 ( -7.6 i 5.6)E 1

( 0) ( -6.6 - 6.1)E O ( -6.6 - 6.1)E O ( -3.0 - 2.2)E 0

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

CS 134 ( 23) 15. ( 3.6

3.9)E 1 01 ( 3.6 1 3.9)E 1 ( 9.0 1 30.9)E 2

( 0) ( 1.4 - 3.1)E O ( 1.4 - 3.1)E O ( 1.1 - 1.7)E O

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

CS 137 ( 23) 18. ( 4.7 2 3.0)E 1 01 ( 4.7 1 3.0)E 1 ( -3.8 2 2.6)E 1

( 0) ( 1.3 - 2.1)E O ( 1.3 - 2.1)E O ( - 1.7 - 0.6)E O

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

SA 140 ( 23) 15. ( 2.8 4.2)E 1 01 ( 2.8 i 4.2)E 1 ( 1.1 i 0.7)E O

( 0) ( 1.3 - 3.1)E O ( 1.3 - 3.1)E O ( 5.5 - 2.0)E O

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

CE 141 ( 23) ( -6.2 2 5.9)E 1 51 ( 4.0 t 59.0)E 2 ( 4.0 t 59.0)E 2

( 0) ( 3.7 - 3.0)E D ( 3.5 - 2.3)E D ( 3.5 - 2.3)E O

( 0/ 12)* *( 0/ 11)* *( 0/ 11)*

CE 144 ( 23) ( 3.4 1 2.7)E O 51 ( 2.8 t 2.2)E O ( 2.8 2 2.2)E O ,

( 0) ( 2.4 - 0.7)E 1 ( 1.8 - 0.7)E 1 ( 1.8 - 0.7)E 1 ;

( 0/ 12)* *( 0/ 11)* *( 0/ 11)* i l

TN 232 ( 23) ( 1.7 i 1.2)E 0 01 ( 1.7 i 1.2)E O ( 1.7 i 1.5)E O I

( 0) ( 3.7 - 11.7)E O ( -3.7 - 11.7)E O ( 4.5 - 12.1)E O

( 0/ 12)* *( 0/ 12)* *( 0/ 11)*

H3 ( 8) 3000. ( 1.4 1 0.5)E 2 01 ( 1.4

0.5)E 2 ( 1.6 i 7.0)E 1

( 0) ( 4.0 - 26.9)E 1 ( 4.0 - 26.9)E 1 ( 8.0 - 21.7)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

Non routine refers to the number of separate measurements which were greater than ten (10) times the )

average background for the period of the report.

- The fraction of sample analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

28

FIGURE 3.5

~

GROSS-BETA MEASUREMENTS OF GROUND WATER SEABROOK STATION 20 _

20 18 ~ -18

-16 16j

.14i 114 122 -12 cm :

-10 ho. 10i -

Si -8 Sk -6 C 14 4

2- -2

0- . .

i

, . . ~0

. Jan Apr Jul Oct Jan 1995

-e- WG-01 Seabrook Town Wells

-o- WG-13 Seabrook Station Well No.13 29

E) Ground Water There is no requirement to collect ground water samples. The samples that were obtained on-site were analyzed for gross-beta activity, gamma-emitters and tritium. The gross beta activity detected is due primarily to naturally occurring radium and its daughter products.

I 30

ENVIRONMENTAL RADIOLOGICAL PROGRAM SUNMARY SEABROOK STATION, SEABROOK, NH (JANUARY DECEMBER 1995)

MEDIUM: GROUND WATER UNITS: PCl/KG INDI ........STAT..IO.NS e...C.ATOR .. STATIO.N WI.TH HIGHEST MEAN

..... .... .............. CONTROL..

...... STATIONS

...e**ee MEAN MEAN MEAN RADIONUCLIDES RANGE STA. RANGE RANGE (W0. ANALYSES) REQUIRED LLD NO. DETECTED ** Wo. NO. DETECTED ** NO. DETECTED ** ,

(WON ROUTINE)* ..................... i GR B ( 8) 4. ( 5.5 i 1.6)E O 13 ( 6.4 2 3.4)F 0 NO DATA

( 0) ( 2.7 - 16.6)E O ( 2.7 - 16.6)E O

( 8/ 8)* *( 4/ 4)*

BE 7 ( 8) ( 4.6 t 2.9)E 0 01 ( 6.8 1 4.0)E D WO DATA

( 0) ( -6.1 - 18.9)E 0 ( 2.3 - 18.9)E O

( 0/ 8)* *( 0/ 4)*

K 40 ( 8) ( 3.7 i 8.4)E O 01 ( 1.7 1 1.3)E 1 No DATA

( 0) ( 3.2 - 4.7)E 1 ( 9.0 - 47.1)E O

( 0/ 8)* *( 0/ 4)*

CR-51 ( 8) ( 5.0 i 12.6)E 1 01 ( 1.6 i 1.9)E O WO DATA

( 0) ( 4.1 - 5.6)E O ( 3.0 - 5.6)E O

( 0/ 8)* *( 0/ 4)*

MN 54 ( 8) 15. ( -6.3 i 3.3)E 1 13 ( -4.0 t 3.5)E -1 NO DATA

( 0) ( 1.9 - 0.7)E O ( -1.1 - 0.6)E O

( 0/ 8)* *( 0/ 4)*

CO 57 ( 8) ( 3.2 1 4.2)E 1 01 ( 7.3 i 7.6)E -1 NO DATA

( 0) ( 1.0 - 3.0)E O ( -3.2 - 29.8)E -1

( 0/ 8)* *( .0/ 4)*

l Co 58 ( 8) 15. ( 5.8 i 5.1)E -1 01 ( 1.2 2 5.2)E 1 NO DATA

( 0) ( 3.2 - 1.1)E 0 ( -1.4 - 0.8)E O

( 0/ 8)* *( 0/ 4)*

FE-59 ( 8) 30. ( 4.3 1 16.3)E 1 01 ( 2.6 i 1.8)E O NO DATA

( 0) ( -6.6 - 7.0)E O ( 1.1 - 7.0)E O

( 0/ 8)* *( 0/ 4)*

CO 60 ( 8) 15. ( 3.8 i 4.9)E 1 01 ( 1.0 2 0.3)E O NO DATA

( 0) ( 2.2 - 1.7)E O ( 1.2 - 16.8)E -1

( 0/ 8)* *( 0/ 4)*

ZN 65 ( 8) 30. ( -6.2 i 11.9)E -1 01 ( 2.0 t 18.7)E -1 NO DATA

( 0) ( -4.9 - 4.5)E 0 ( -3.7 - 4.5)E O

( 0/ 8)* *( 0/ 4)*

SE 75 ( 8) ( 1.4 t 8.9)E 1 01 ( 1.6 i 18.5)E 1 No DATA

( 0) ( 5.3 - 2.7)E O ( -5.3 - 2.7)E O

( 0/ 8)* *( 0/ 4)*

ZR 95 (.8) 15. ( 3.4 i 8.4)E 1 13 ( 3.8 t 12.3)E 1 NO DATA

( 0) ( 4.2 - 3.7)E 0 ( 2.2 - 3.7)E O

( 0/ 8)* *( 0/ 4)*

Non routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sample analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

31 1

i

ENVIRONMENTAL RADIOLOGICAL PROGRAM SLDMARY SEASROOK STATION, SEA 8 ROOK, NH (JANUARY DECEMSER 1995)

MEDIUM: GROUND WATER DNITS: PCl/KG INDICATOR STATIONS eeeeeeee**ee.****e STA110N WITH HIGHES.T e***e. ***ee....... ..ee. MEAN CONTROL ee** ... ... S.

...TAT. IONS RADIONUCLIDES MEAN MEAN MEAN (NO. ANALTSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD NO. DETECTED ** No. No. DETECTED ** WO. DETECTED **

GR*B ( 8) 4. ( 5.5 i 1.6)E O 13 ( 6.4 2 3.4)E O NO DATA

( 0) ( 2.7 - 16.6)E O ( 2.7 - 16.6)E O

( 8/ 8)* *( 4/ 4)*

BE 7 ( 8) ( 4.6 t 2.9)E O 01 ( 6.8 2 4.0)E 0 NO DATA

( 0) ( 6.1 - 18.9)E D ( 2.3 - 18.9)E O

( 0/ 8)* *( 0/ 4)*

K-40 ( 8) ( 3.7 i 8.4)E O 01 ( 1.7 t 1.3)E 1 NO DATA

( 0) ( 3.2 - 4.7)E 1 ( -9.0 - 47.1)E O

( 0/ 8)* *( 0/ 4)*

CR 51 ( 8) ( 5.0 1 12.6)E -1 01 ( 1.6 1 1.9)E O NO DATA

( 0) ( 4.1 - 5.6)E O ( 3,0 - 5.6)E 0

( 0/ 8)* *( 0/ 4)*

MN 54 ( 8) 15. ( 6.3 t 3.3)E 1 13 ( -4.0 2 3.5)E -1 NO DATA '

( 0) ( -1.9 - 0.7)E 0 ( 1.1 - 0.6)E O

( 0/ 8)* *( 0/ 4)*

Co-57 ( 8) ( 3.2 t 4.2)E 1 01 ( 7.3 t 7.6)E -1 NO DATA

( 0) ( -1.0 - 3.0)E O ( -3.2 - 29.8)E 1

( 0/ 8)* *( 0/ 4)*

Co 58 ( 8) 15. ( 5.8 t 5.1)E 1 01 ( 1.2 1 5.2)E 1 NO DATA

( 0) ( 3.2 - 1.1)E 0 ( 1.4 - 0.8)E O

( 0/ 8)* *( 0/ 4)*

FE 59 ( 8) 30. ( 4.3 i 16.3)E 1 01 ( 2.6 2 1.8)E O NO DATA

( 0) ( 6.6 - 7.0)E 0 ( 1.1 - 7.0)E O

( 0/ 8)* *( 0/ 4)*

Co 60 ( 8) 15. ( 3.8 4.9)E 1 01 ( 1.0 2 0.3)E O NO DATA

( 0) ( 2.2 - 1.7)E 0 ( 1.2 - 16.8)E 1

( 0/ 8)* *( 0/ 4)*

2N 65 ( 8) 30. ( 6.2 i 11.9)E 1 01 ( 2.0 i 18.7)E 1 NO DATA

( 0) ( 4.9 - 4.5)E O ( -3.7 - 4.5)E O

( 0/ 8)* *( 0/ 4)*

SE-75 ( 8) ( -1.4

8.9)E 1 01 ( 1.6 i 18.5)E 1 NO DATA

( 0) ( 5.3 - 2.7)E O ( -5.3 - 2.7)E 0

( 0/ 8)* *( 0/ 4)*

2R 95 ( 8) 15. ( 3.4 8.4)E 1 13 ( 3.8 2 12.3)E -1 NO DATA

( 0) ( 4.2 - 3.7)E O ( -2.2 - 3.7)E 0

( 0/ 8)* *( 0/ 4)*

Non routine refers to the maber of separate measurements which were greater than ten (10) times the average backgrourd for the period of the report.

- The fraction of sample analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

31

ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEA 8 ROOK STATION, SEASROOK, NH (JANUARY DECEMBER 1995)

MEDIUM: GROUND WATER UNITS: PCI/KG IND e...ICATOR

....... .. S....

TAT. IONS S T AT.

.... .. ION.W..I.TH

.** . .. . H CONTROL..S.

....... .. ...TAT. IONS

.. I G.HE.ST.ME.AN RADIONUCLIDES MEAN MEAN MEAN (WO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD 20. DETECTED ** No. 20. DETECTED ** Wo. DETECTED **

AG 110M( 8) ( 5.1

50.1)E 2 13 ( 4.6 2 8.3)E -1 WO DATA

( 0) ( 1.4 - 2.1)E O ( 1.4 - 2.1)E O

( 0/ 8)* *( 0/ 4)*

RU 103 ( 8) ( 1.4 0.6)E 0 01 ( 1.2 i 0.6)E O WO DATA

( 0) ( 3.7 - 1.5)E O ( 2.2 - 0.6)E O

( 0/ 8)* *( 0/ 4)*

RU 106 ( 8) ( 3.8

5.2)E O 13 ( 4.6 i 9.8)E 0 NO DATA

( 0) ( 2.2 - 2.2)E i ( 2.2 - 2.2)E 1

( 0/ 8)* *( 0/ 4)*

$5 124 ( 8) ( -8.9 2 13.0)E 1 13 ( 1.4 2 1.4)E O NO DATA

( 0) ( -6.2

4.6)E O ( -2.0 - 4.6)E O

( 0/ 8)* *( 0/ 4)*

l 131 ( 8) 15 ( 1.4 2 0.9)E 0 13 ( 2.2 i 0.8)E O NO DATA

( 0) ( 4.0 - 4.1)E 0 ( 4.5 - 40.7)E 1

( 0/ 8)* *( 0/ 4)*

CS 154 ( 8) 15. ( 6.3 t 10.8)E 1 01 ( 2.3 1 1.7)E 0 NO DATA

( 0) ( 3.3 - 7.1)E 0 ( 7.7 - 70.6)E 1

( 0/ 8)* *( 0/ 4)*

CS 137 ( 8) 18. ( 2.3 2 6.4)E 1 01 ( 2.8 i 8.6)E 1 NO DATA

( 0) ( 3.3 - 2.0)E O ( -2.0 - 2.0)E O

( 0/ 8)* *( 0/ 4)*

BA 140 ( 8) 15. ( 4.5 t 7.6)E 1 01 ( 8.2 2 10.4)E 1 NO DATA

( 0) ( 2.2 - 3.7)E O ( 2.2 - 2.3)E O

( 0/ 8)* *( 0/ 4)*

CE 141 ( 8) ( 1.1 1 1.0)E O 13 ( 1.9 t 1.0)E O NO DATA

( 0) ( -3.1 - 5.4)E O ( 7.1 - 481.0)E 2

( 0/ 8)* *( 0/ 4)*

CE 144 ( 8) ( 4.1 t 3.1)E O 13 ( -3.7

3.3)E O WO DATA

( 0) ( 2.1 - 0.5)E 1 ( -9.9 - 2.8)E O

( 0/ 8)* *( 0/ 4)*

TH 232 ( 8) ( 1.0 t 0.8)E O 13 ( 2.6 t 1.0)E O NO DATA

( 0) ( 1.9 - 5.4)E O ( 7.0 - 53.8)E 1

( 0/ 8)* *( 0/ 4)*

H3 ( 8) 3000. ( 1.1 1 0.6)E 2 01 ( 1.4 t 0.8)E 2 ko DATA

( 0) ( 1.8 - 3.5)E 2 ( 2.1 - 35.0)E 1

( 0/ 8)* *( 0/ 4)*

Non routine refers to the nuiber of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sample analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

32 ,

F) Sediment Semiannual sediment sampling is required at one location, although a total of five locations, three indicator and two control are collected.

Each sediment core was sectioned into 5 centimeter segments. A gamma analysis was performed on each section.

The only radionuclides detected in 1995 were naturally occurring K-40, Th-232 and its natural daughters.

i l

l 1

l I

l 1

i 1

33

l l

1 ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEASP00K $TATION, SEASROOK, NM (JANUARY - DECEMBER 1995)

MEDIUM: SEDIMENT UNITS: PCl/KG DRY CONTROL STATIONS

.INolCATOR

.......... . ST.A.TIONS

.... .S...TAT. ION WITH

...eeeeee*** HIGHEST MEAN eeeeee. ......... *****e RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD No. DETECTED ** No. No. DETECTED ** NO. DETECTED **

J BE 7 ( 30) ( 3.3 3.4)E 1 07 ( 5.7 i 5.3)E 1 ( -3.1 1 33.2)E 0

( 0) ( 2.0 - 2.9)E 2 ( 1.0 - 2.5)E 2 ( -2.2 - 1.4)E 2

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

K-40 ( 30) ( 1.5 0.1)E 4 08 ( 1.9 k 0.2)E 4 ( 1.3 2 0.0)E 4

( 0) ( 1.0 - 2.4)E 4 ( 1.0 - 2.4)E 4 ( 1.0 - 1.4)E 4

( 18/ 18)* *( 6/ 6)* *( 12/ 12)*

CR-51 ( 30) ( 2.2 1 56.7)E O 08 ( 5.8

9.8)E 1 ( 5.2 t 6.8)E 1

( 0) ( 3.5 - 3.8)E 2 ( 2.6 - 3.6)E 2 ( -4.3 - 4.3)E 2

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

MN 54 ( 30) ( -1.8 2 29.2)E -1 02 ( 4.6 i 3.4)E 0 ( -1.5 t 3.8)E O

( 0) ( -3.5 - 1.5)E 1 ( 8.4 - 15.4)E O ( 2.0 - 1.9)E 1

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

Co-57 ( 30) ( 5.4 2 12.9)E -1 57 ( 6.7 2 3.6)E O ( 3.5 2 2.3)E D

( 0) ( 7.4 - 11.5)E D ( -3.6 - 18.9)E O ( -8.1 - 18.9)E O

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

CO 58 ( 30) ( 7.6 1 3.8)E O 57 ( 2.2 1 5.3)E D ( -4.1 i 4.5)E O

( 0) ( -3.4 - 2.3)E 1 ( 1.1 - 2.1)E 1 ( -4.1 - 2.1)E 1

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

FE-59 ( 30) ( 2.6 2 1.4)E 1 52 ( 7.4 18.1)E O ( -4.1 i 11.7)E O

( 0) ( -1.0 - 0.5)E 2 ( 6.6 - 5.3)E 1 ( -6.6 - 5.3)E 1 d

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

Co-60 ( 30) ( 2.4 i 3.8)E O 57 ( 5.2 1 4.6)E O ( -5.1 t 33.9)E 1

( 0) ( -2.8 - 3.8)E 1 ( 9.7 - 23.0)E O ( 1.8 - 2.3)E 1 a *( 0/ 18)* *( 0/ 6)* *( 0/ 12)*

a ZN 65 ( 30) ( 3.71 1.3)E 1 57 ( 2.3 i 3.5)E 1 ( 2.2 2 2.0)E 1

( 0) ( -1.2 - 0.4)E 2 ( -4.0 - 19.4)E 1 ( -4.0 - 19.4)E 1

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

SE 75 ( 30) ( 3.9 t 3.3)E 0 02 ( 1.7 i 5.5)E O ( 7.5 2 3.2)E O

( 0) ( -2.8 - 1.4)E 1 ( 2.2 - 1.4)E 1 ( 2.6 - 1.1)E 1

( 0/ 18)* *( 0/ o)* *( 0/ 12)*

ZR 95 ( 30) ( 2.0 1 5.4)E O 52 ( 3.8 2 1.1)E 1 ( 2.5 i 0.7)E 1

( 0) ( 3.8 - 3.6)E 1 ( 0.0 - 7.2)E 1 ( 7.9 - 72.2)E O

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

Non-routine refers to the ruber of separate measurements which were greater than ten (10) times the average backgromd for the period of the report.

- The fraction of sagte analyses yletding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

34

i ENV!EONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEASROOK STATION, SEABROOK, NN (JANUARY DECEMeER 1995)

MEDIUM: SEDIMENT UNITS: PCl/KG DRY l

lN

..DICATO.R.STAil0NS

..... . ........ .S...TAT.

.....ION WI.TH

..... ......L.S.T CONTRO.AT.I HIG.Hf.S.T.MEAN

. .... . .. ...ONS RADIONUCLIDES MEAN MEAN MEAN (No. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUT!NE)* LLD NO. DETECTED ** NO. NO. DETECTED ** WO. DETECTED **

AQ 110M( 30) ( 4.7 i 3.0)E 0 08 ( 8.9 t 3.7)E O ( 3.1 1 3.8)E O

( 0) ( 1.5 - 2.5)E 1 ( 2.7 - 19.4)E O ( 2.1 - 1.5)E 1

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

RU 103 ( 30) ( 1.0 t 4.9)E O 08 ( 8.1 t 5.6)E 0 ( 3.9 t 5.2)E O

( 0) ( 3.5 - 3.8)E 1 ( 1.8 - 1.8)E 1 ( -3.6 - 2.2)E 1

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

RU 106 ( 30) ( 6.6 2 273.3)E 1 52 ( 1.1 t 0.4)E 2 ( 8.3 t 3.0)E 1

( 0) ( 2.7 - 1.9)E 2 ( -3.8 - 28.0)E 1 ( 1.1 - 2.8)E 2

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

SB 124 ( 30) ( 4.8 i 58.5)E 1 08 ( 4.72 11.5)E O ( 5.0 t 5.7)E O

( 0) ( 3.9 - 4.2)E 1 ( 2.5 - 4.2)E 1 ( 3.9 - 1.9)E 1

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

l 131 ( 30) ( 3.0 t 3.1)E 1 52 ( 5.8 i 7.6)E 1 ( 1.2 t 4.4)E 1

( 0) ( 2.9 - 2.2)E 2 ( 1.9 - 3.1)E 2 ( -1.9 - 3.1)E 2

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

CS 134 ( 30) 150. ( 9.6 1 5.0)E O 07 ( 1.1 t 6.8)E O ( -9.7 2 5.3)E O

( 0) ( 4.7 - 1.6)E 1 ( 2.6 - 1.6)E 1 ( 4.8 - 0.7)E 1

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

CS 137 ( 30) 180. ( 6.9 1 361.9)E 2 52 ( 6.8 1 9.6)E O ( 6.9 2 59.9)E 1

( 0) ( 2.6 - 2.7)E 1 ( 1.8 - 3.9)E 1 ( -1.9 - 3.9)E 1

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

BA 140 ( 30) ( 1.9 t 14.4)E O 57 ( 2.3 t 3.5)E 1 ( 2.0 1 2.0)E 1

( 0) ( 10.0 - 10.8)E 1 ( 7.7 - 12.9)E 1 ( -7.7 - 12.9)E 1

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

CE 141 ( 30) ( 1.9

1.0)E 1 02 ( 3.7 t 2.0)E 1 ( 1.6

0.7)E 1

( 0) ( -4.9 - 9.7)E 1 ( 1.9 - 9.7)E 1 ( 1.9 - 6.0)E 1

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

CE 144 ( 30) ( 4.1 1 1.8)E 1 07 ( -3.1 t 21.2)E 0 ( 4.3

2.4)E 1

( 0) ( 2.0 - 0.8)E 2 ( 6.8 - 7.9)E 1 ( -1.6 - 1.1)E 2

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

TM 232 ( 30) ( 4.8

0.7)E 2 52 ( 9.0 t 0.9)E 2 ( 6.2 t 1.0)E 2

( 0) ( 1.9 - 10.6)E 2 ( 6.9 - 13.4)E 2 ( 2.8 - 13.4)E 2

( 17/ 18)* *( 6/ 6)* *( 12/ 12)*

Won routine refers to the nueer of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of senple analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

35

i l

G) Fish Semiannual fish and invertebrate samples are required from two locations. This section presents the results for fish sampling only. !

Invertebrate results may be found in sections entitled Lobsters and Shellfish. Samples were collected from two locations quarterly. A gamma analysis was performed on each sample.

~

During the year the fish species collected from station no.03 were Winter Flounder and common Yellow Tail Flounder. The species collected from station no. 53 were Winter Flounder, common Yellow Tail Flounder and Dog Fish Shark.

The only radionuclide detected in fish samples in 1995 was naturally occurring K-40.

i 1

36

-. --.. r

i ENVIRONMENTAL RADIOLOGICAL PROGRAM SUMARY SEABROOK STATION, SEABROOK, NN (JANUARY DECEMBER 1995)

MEDIUM: FISHES UNITS: PCI/KG WET INDICATOR STAfl0NS

- - - eeeeeeeeeeeeee S.TA..TIO.N

. WI.T.H

. .... ....... .. HIGHES.T

.. CONTROL.

ME.AN.... STAT.

....... ... IONS RADIONUCLIDES MEAN MEAN MEAN (NO ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD NO. DETECTED ** NO. NO. DETECTED ** NO. DETECTED **

BE 7 ( 8) ( 4.5 1 41.2)E O 03 ( 4.5 2 41.2)E 0 ( -2.7 2 24.3)E O

( 0) ( -1.1 - 0.6)E 2 ( 1.1 - 0.6)E 2 ( -5.3 - 4.3)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

K-40 ( 8) ( 2.9 1 0.1)E 3 03 ( 2.9 1 0.1)E 3 ( 2.9 1 0.1)E 3

( 0) ( 2.6 - 3.2)E 3 ( 2.6 - 3.2)E 3 ( 2.7 - 3.3)E 3

( 4/ 4)* *( 4/ 4)* *( 4/ 4)*

CR-51 ( 8) ( 5.5 t 3.1)E 1 53 ( 1.1 2 0.1)E 2 ( 1.1 i 0.1)E 2

( 0) ( -6.3 - 141.0)E O ( 8.4 - 12.5)E 1 ( 8.4 - 12.5)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

MN 54 ( 8) 130. ( 1.62 4.8)E O 53 ( 9.9 2 54.7)E -1 ( -9.9 2 54.7)E 1

( 0) ( -1.2 - 1.0)E 1 ( 1.6 - 0.7)E 1 ( 1.6 - 0.7)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

Co 57 ( 8) ( 4.0 t 1.4)E O 03 ( 4.0 1 1.4)E O ( 1.1 i 4.8)E O

( 0) ( 3.7 - 68.6)E 1 ( 3.7 - 68.6)E 1 ( -6.8 - 14.7)E O

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

CO 58 ( 8) 130. ( 3.9 i 3.3)E O 03 ( 3.9 2 3.3)E 0 ( 3.7 i 5.2)E O

( 0) ( 1.2 - 13.3)E O ( -1.2 - 13.3)E O ( +5.1 - 18.8)E O

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

FE 59 ( 8) 260. ( 6.7 2 7.7)E 0 03 ( 6.7 1 7.7)E O ( 9.5 t 22.5)E O

( 0) ( 1.4 - 1.9)E i ( 1.4 - 1.9)E 1 ( -6.6 - 3.5)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

Co-60 ( 8) 130. ( 3.8 1 3.1)E 0 03 ( 3.8 1 3.1)E O ( 1.1 2 4.4)E O

( 0) ( 2.2 - 9.4)E O ( 2.2 - 9.4)E 0 ( 1.1 - 0.9)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

ZN 65 ( 8) 260. ( -2,1 i 0.9)E 1 53 ( 1,6 1 0.5)E 1 ( 1.6 i 0.5)E 1

( 0) ( -4.5 - 0.3)E 1 ( 2.8 - -0.3)E 1 ( 2.8 - 0.3)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

SE 75 ( 8) ( 3.4 2 4.7)E 0 53 ( 5.8 1 2.8)E 0 ( 5.8 2 2.8)E O

( 0) ( 9.3 - 10.6)E 0 ( 1.7 - 11.7)E O ( 1.7 - 11.7)E O

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

ZR 95 ( 8) ( 2.7 i 6.9)E 0 53 ( 4.9 i 3.3)E O ( 4.9 2 3.3)E 0

( 0) ( 1.8 - 1.0)E 1 ( -2.2 - 10.7)E O ( -2.2 - 10.7)E O

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

Non routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The f raction of senple analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*. .

37

ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEABROOK $TATION, SEAS 400K, NH (JANUARY DECEM8ER 1995) l i

MEDIUM: FISHES UNITS: PCI/KG WET i

CONTROL STATIONS INDICATOR .. S. .S...T AT .I O.N..W..I

.. TAT. ION.S . . .. .T H. H.I GHE.S..T.MEAN

.... eeeeeeeeeeeeeee.

RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTlWE)* LLD NO. DETECTE0** NO. No. DETECTED" NO. DETECTED **

AG 110M( 8) ( 1.3 2 31.0)E 1 53 ( 9.7 i 4.1)E O ( 9.7 i 4.1)E O

( 0) ( 4.8 - 9.2)E O ( 1.5 - 16.7)E O ( 1.5 - 16.7)E 0

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

RU 103 ( 8) ( 7.3 1 4.1)E 0 53 ( 1.4 1 22.6)E 1 ( 1.4

22.6)E 1

( 0) ( 1.5 - 0.1)E 1 ( -3.2 - 6.6)E O ( 3.2 - 6.6)E O

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

RU 106 ( 8) ( 2.2 1 1.3)E 1 03 ( 2.2 2 1.3)E 1 ( -5.8 1 2.5)E 1

( 0) ( 1.7 - 4.0)E 1 ( 1.7 - 4.0)E 1 ( 1.2 - 0.0)E 2

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

Sa 124 ( 8) ( 3.9 i 9.0)E O 53 ( 9.2 9.7)E O ( 9.2 1 9.7)E O

( 0) ( -2.0 - 2.2)E 1 ( 7.7 - 37.0)E O ( 7.7 - 37.0)E O

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

l 131 ( 8) ( 1.1 1 1.0)E 1 53 ( 9.1 1 8.2)E O ( 9.1

8.2)E O

( 0) ( 3.9 - 0.5)E 1 ( 1.5 - 2.1)E 1 ( -1.5 - 2.1)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

CS-134 ( 8) 130. ( 1.3 1 0.4)E 1 53 ( 1.0 2 0.5)E 1 ( 1.0 i 0.5)E 1 *'

i

( 0) ( 2.5 - 0.3)E 1 ( 3.4 - 24.1)E O ( 3.4 - 24.1)E O

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

CS 137 ( 8) 150. ( 3.0 2 5.1)E O 53 ( 7.7 i 4.1)E O ( 7.7 i 4.1)E O

( 0) ( 9.3 - 13.3)E O ( 1.5 - 154.0)E 1 ( 1.5 - 154.0)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

BA 140 ( 8) ( 10.0 t 9.4)E O 03 ( 10.0 t 9.4)E 0 ( -1.5

0.8)E 1

( 0) ( 8.1 - 34.8)E O ( 8.1 - 34.8)E O ( 3.7 - 0.0)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

CE 141 ( 8) ( 4.1 2 3.8)E 0 03 ( 4.1 1 3.8)E O ( 2.6

4.1)E O

( 0) ( -6.3 - 10.6)E O ( 6.3 - 10.6)E O ( 1.2 - 0.8)E 1

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

CE 144 ( 8) ( 5.4 t 1.6)E 1 53 ( -2.2 1 3.2)E 1 ( 2.2 3.2)E 1

( 0) ( 1.0 - -0.3)E 2 ( 1.1 - 0.4)E 2 ( 1.1 - 0.4)E 2

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

TM 232 ( 8) ( 2.8 0.5)E 1 03 ( 2.8 1 0.5)E 1 ( -3.1 1 1.4)E 1

( 0) ( 1.9 - 4.1)E 1 ( 1.9 - 4.1)E 1 ( 6.7 - 0.9)E i

( 0/ 4)* *( 0/ 4)* *( 0/ 4)*

Non routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sanple analyses yletding detectable measurements (i.e., greater than three (3) standard devletions) is indicated with *( )*.

38 l

1

H) Lobsters Semiannual fish and invertebrate samples were required from two locations. This section provides the results for one type of invertebrate only - American lobsters. Fish and other invertebrate results may be found in the sections entitled Fish and Shellfish, respectively. Semiannual samples were collected from two locations. A gamma analysis was performed on each sample.

The only radionuclide detected in lobster samples in 1995 was naturally occurring K-40.

j f

s

' m_.

D.

J 39 .

ll d

ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEABROOK STATION, SEASROOK, NH (JANUARY DECEMSER 1995)

MEDIUM: AMERICAN LOS$fER UNITS: PCl/KG WET IN0lCATOR STAf eeeeeeeeeeeeee.l0NS ... .S.TATION....eeeeeeeeeeeeeeeeeee WITH HIGHEST MEAN CO.N.. TROL. STATIONS

. .. eeeeee**

RADIONUCLIDES MEAN MEAN MEAN REQUIRE 0 RANGC STA. RANGE RANGE (No. ANALYSES)

(NON ROUTINE)* LLD NO. DETECTE0** NO. NO. DETECTE0** No. DETECTED **

BE 7 ( 4) ( 3,0 1 4.3)E 1 54 ( 5.9 1 7.4)E 1 ( 5.9 2 7.4)E 1

( 0) ( 7.3 - 1.2)E 1 ( 1.5 - 13.3)E 1 ( 1.5 - 13.3)E 1

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

K 40 ( 4) ( 2.1 t 0.0)E 3 54 ( 2.2

0.2)E 3 ( 2.2 1 0.2)E 3

( 0) ( 2.1 - 2.1)E 3 ( 2.0 - 2.5)E 3 ( 2.0 - 2.5)E 3

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

1 CR 51 ( 4) ( 5.6

8.4)E 1 54 ( 3.2 1 13.6)E 1 ( -3.2 i 13.6)E 1

( 0) ( 1.4 - 0.3)E 2 ( 1.7 - 1.0)E 2 ( 1.7 - 1.0)E 2

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

MN 54 ( 4) 130. ( 6.0 2 1.1)E 0 54 ( 5.9 2 4.9)E O ( 5.9 t 4.9)E 0

( 0) ( 7.1 - 5.0)E O ( 1.1 - 0.1)E 1 ( 1.1 - 0.1)E 1

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

C0 57 ( 4) ( 6.2 4.1)E O 04 ( 6.2 1 4.1)E O ( -3.6 1 2.2)E O

( 0) ( 2.1 - 10.3)E O ( 2.1 - 10.3)E O ( 5.7 - 1.4)E O

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

C0 58 ( 4) 130. ( 1.7 i 7.2)E 0 54 ( 1.5 2.9)E O ( 1.5 t 2.9)E O

( 0) ( 9.0 - 5.5)E D ( 1.4 - 4.4)E O ( -1.4 - 4.4)E O

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

FE 59 ( 4) 260. ( 4.6 2 0.7)E 1 04 ( 4.6 i 0.7)E 1 ( -1.0 t 7.6)E O

( 0) ( 3.9 - 5.2)E 1 ( 3.9 - 5.2)E 1 ( 8.6 - 6.6)E O

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

Co 60 ( 4) 130. ( 1.7 1 0.4)E 1 04 ( 1.7 i 0.4)E 1 ( 2.0 t 4.3)E O

( 0) ( 1.3 - 2.0)E 1 ( 1.3 - 2.0)E 1 ( 2.3 - 6.2)E O

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

ZN 65 ( 4) 260. ( 5.3 i 5.3)E 0 54 ( 1.6

0.7)E 1 ( 1.6 1 0.7)E 1

( 0) ( 0.0 - 1.1)E 1 ( 9.1 - 24.0)E 0 ( 9.1 - 24.0)E 0

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

SE 75 ( 4) ( 3.2 1 8.6)E 0 54 ( 9.7 t 88.5)E -1 ( -9.7 t 88.5)E *1

( 0) ( 1.2 - 0.5)E 1 ( 9.8 - 7.9)E O ( -9.8 - 7.9)E 0

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

r ZR 95 ( 4) ( 4.9 i 32.4)E 1 04 ( 4.9 i 32.4)E 1 ( 8.4

8.5)E 0

( 0) ( 2.7 - 3.7)E 0 ( -2.7 - 3.7)E O ( 1.7 - 0.0)E 1

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

Non routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The f raction of sample analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

i 40 l

ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEABROOK STATION, SEABROOK, NH (JANUARY - DECEMBER 1995)

MEDIUM: AMERICAN LOS$TER UNITS: PCI/KG WET IND CONTROL STATIONS e...I ....

CATOR..ST ...........WIT.H ee****e.AT IONSSTATION ......HIGHEST

- ... MEAN e.**e eeeeee****

RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (MON ROUTINE)* LLD Wo. DE1ECTED** Wo. NO. DETECTED ** Wo. DETECTED **

AG 110M( 4) ( 9.1 2 3.0)E O 04 ( 9.1 2 3.0)E O ( 4.6 2 4.6)E 0

( 0) ( 6.1 - 12.1)E O ( 6.1 - 12.1)E O ( 0.0 - 9.1)E O

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

RU-103 L 4) ( 7.2 2 2.2)E O 04 ( 7.2 2 2.2)E 0 ( -7.1 2 17.4)E O

( 0) ( 5.0 - 9.4)E D ( 5.0 - 9.4)E O ( 2.4 - 1.0)E 1

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

RU 106 ( 4) ( 4.7 i 5.3)E 1 54 ( 1.1 2 0.9)E 2 ( 1.1 1 0.9)E 2

( 0) ( 6.1 - 99.3)E 0 ( 1.7 - 19.8)E 1 ( 1.7 - 19.8)E 1

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

$8-124 ( 4) ( 1.2 2.5)E 1 54 ( -5.1 2 4.4)E O ( -5.1 1 4.4)E D

( 0) ( -3.7 - 1.I)E 1 ( 9.5 - 0.7)E O ( -9.5 - -0.7)E O

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

l 131 ( 4) ( 1.3 2 3.1)E 1 04 ( -1.3 1 3.1)E 1 ( -2.0 1 1.1)E 1

( 0) ( 4.4 - 1.8)E 1 ( -4.4 - 1.8)E 1 ( -3.1 - 1.0)E 1

i 0/ 2)* *( 0/ 2)* *( 0/ 2)*

CS 134 ( 4) 130. s 3.4 1 1.0)E O 04 ( 5.4 1 1.0)E O ( -2.5 1 0.7)E O 3.2 -

l- ( 0) ( 4.4 - 6.4)E O ( 4.4 - 6.4)E O ( 1.7)E O

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

CS 137 ( 4) 150. ( 1.1 t 1.4)E O 54 ( 8.6 t 2.9)E D ( 8.6 t 2.9)E O

( 0) ( 2.4 - 24.8)E -1 ( 5.7 - 11.6)E O ( 5.7 - 11.6)E 0

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

BA 140 ( 4) ( 3.0 1.5)E 1 04 ( 3.0 i 1.5)E 1 ( 8.2 2 14.5)E O l

( 0) ( 1.5 - 4.5)E 1 ( 1.5 - 4.5)E 1 ( 2.3 - 0.6)E 1 !

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

1 CE-141 ( 4) ( 3.0 2 6.3)E O 04 ( 3.0 t 6.3)E O ( 5.6 1 0.9)E O

( 0) ( 3.4 - 9.3)E 0 ( -3.4 - 9.3)E O ( -6.5 - -4.6)E O I

( 0/ 2)* *( 0/ 2)* *( 0/ 2)* '

l CE 144 ( 4) ( 2.2 0.6)E 1 54 ( -4.0 2 17.8)E 0 ( 4.0 2 17.8)E 0

( 0) ( -2.8 - 1.7)E 1 ( -2.2 - 1.4)E 1 ( -2.2 - 1.4)E 1

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

TM-232 ( 4) ( 3.0 t 5.2)E 1 04 ( 3.0 2 5.2)E 1 ( 1.8 1 1.3)E 1

( 0) ( 2.2 - 8.2)E 1 ( 2.2 - 8.2)E 1 ( 4.4 - 31.0)E O

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

Non-routine refers to the nunber of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sapple analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

41

I) Shellfish Semiannual fish and invertebrate samples are required from two locations. This section provides the results for shellfish samples

)

only. Fish and other invertebrate results may be found in the sections entitled Fish and Lobsters, respectively. A gamma analysis was performed on each sample.

The only radionuclide detected in shellfish samples in 1995 was naturally occurring K-40.

4 1

t 42

l l

ENVIRONMENTAL RADIOLOGICAL PROGRAM SUNMARY SEASROOK STATION, SEASROOK, NH (JANUARY DECEMBER 1995)

MEDIUM: MUSSEL UNITS: PCl/KG WET STATION WITH HIGHEST MEAN CONTROL STATIONS

. .....e***e.......

INDICATOR STATIONS ..... ****e.......******e eeeeee****veeee.

RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD No. DE1ECTED** NO. NO. DETECTED ** Wo. DETECTED **

BE 7 ( 8) ( 3.2 1 64.0)E O 59 ( 6.8 1 1.1)E 1 ( 4.6 i 1.5)E 1

( 0) ( -1.5 - 1.4)E 2 ( 5.7 - 7.8)E 1 ( 6.7 - 78.4)E O

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

K 40 ( 8) ( 1.0 1 0.1)E 3 56 ( 1.3 1 0.4)E 3 ( 1.0 t 0.3)E 3

( 0) ( 8.5 - 12.3)E 2 ( 8.5 - 16.8)E 2 ( 4.8 - 16 8)E 2

( 4/ 4)* *( 2/ 2)* *( 3/ 4)*

CR 51 ( 8) ( 8.7 i 4.2)E 1 09 ( 1.2 t 0.7)E 2 ( -5.6 1 2.9)E 1

( 0) ( 8,5 - 188.0)E 0 ( 5.6 - 18.8)E 1 ( -1.2 - 0.1)E 2

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

MN 54 ( 8) 130. ( 2.4 t 2.5)E O 59 ( 7.4 1 0.1)E O ( 4.9 1 1.5)E O

( 0) ( 7.1 - 2.8)E O ( 7.3 - 7.6)E O ( 2.1 - 7.6)E O

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

Co 57 ( 8) ( 7.6 1 31.0)E 1 59 ( 4.3 1 0.4)E O ( 3.3 t 0.6)E O

( 0) ( 8.8 - 5.7)E O ( 3.9 - 4.7)E O ( 2.3 - 4.7)E O

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

CO-58 ( 8) 130. ( 5.8 1 5.3)E O 09 ( 1.1 i 0.8)E 1 ( 1.8 1 0.9)E O

( 0) ( -5.7 - 19.5)E O ( 2.6 - 19.5)E D ( -9.1 - 31.6)E 1

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

FE 59 ( 8) 260. ( 1.5 1 0.8)E 1 56 ( 2.7 1 2.2)E 1 ( -3.5 1 75.8)E 1

( 0) ( 3.8 - 0.1)E 1 ( 5.0 - 48.0)E -1 ( 2.1 - 1.5)E 1

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

Co 60 ( 8) 130. ( -6.7 1 26.6)E -1 59 ( 7.4 1 4.1)E O ( 4.5 1 3.1)E O

( 0) ( -8.4 - 3.4)E O ( 3.3 - 11.5)E O ( -3.3 - 11.5)E 0

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

ZN 65 ( 8) 260. ( -5.0 47.1)E 1 D6 ( 7.0 1 3.3)E O ( -7.1 1 9.7)E O

( 0) t 1.1 - 1.0)E 1 ( 3.6 - 10.3)E O ( -3.2 - 1.2)E 1

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

SE 75 ( 8) t 2.7 6.7)E O 56 ( 8.0 1 7.0)E D ( 4.8 i 4.8)E O

( 0) ( 1.7 - 1.4)E 1 ( 1.0 - 15.0)E O ( -6.7 - 15.0)E O i

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

l 2R-95 ( 8) ( 1.6 1 0.5)E 1 09 ( 2.1 t 0.8)E 1 ( 2.7 i 33.2)E -1

( 0) ( 6.0 - 29.0)E D ( 1.4 - 2.9)E 1 ( 5.3 - 9.5)E O

'( 0/ 4)* *( 0/ 2)* *( 0/ 4)*

Non-routine refers to the nudser of separate measurements which were greater than ten (10) times the avercge background for the period of the report. ,

- The fraction of sample analyses yielding detectable measurements (i.e., greater than three (3) standard i deviations) is indicated with *( )*.

l 43

I ENVIRONMENTAL RADIOLOGICAL PROGRAM SUM ARY SEA 8R00K STAfl0N, SEASROOK, NN (JANUARY - DECEMSER 1995)

MEDIUM: MUSSEL UNITS: PCl/KG WET IN0!CATOR STATIONS eeeeeeeeeeeeeeeee. STAT!DN WIT.M

........... ......HIGHE.ST.ME.AN

. . .. C.ONTROL

......... . STA.T.

... IONS RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD NO. OETECTED** NO. No. DETECTED ** NO. DETECTED **

AG 110M( 8) ( 6.2 2 2.1)E 0 56 ( 8.2 t 6.1)E O ( 6.0 t 2.9)E O

( 0) - ( 3.8 - 12.4)E O ( 2.1 - 14.3)E O ( 1.9 - 14.3)E O

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

RU-103 ( 8) ( 1.9 2 3.0)E O 06 ( 5.6 i 1.8)E O ( 3.5 1 2.0)E O

( 0) ( 6.5 - 7.4)E O ( 3.8 - 7.4)E 0 ( 7.5 - 0.0)E O

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

RU 106 ( 8) ( 8.0 t 1.5)E 1 56 ( 2.8 2 0.1)E 1 ( 1.6 2 1.3)E 1

( 0) ( 1.2 - 0.5)E 2 ( 2.8 - 2.9)E 1 ( 2.1 - 2.9)E 1

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

$5 124 ( 8) ( -4.5 t 13.0)E O 59 ( 2.0 1 2.7)E 1 ( 9.9 1 12.6)E O

( 0) ( 4.3 - 1.2)E 1 ( 7.1 - 46.3)E O ( 7.1 - 46.3)E O

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

I-131 ( 8) ( 9.7 i 15.0)E O 59 ( 4.6 i 1.3)E 1 ( 1.3 1 2.0)E 1

( 0) ( -1.7 - 4.4)E 1 ( 3.3 - 6.0)E 1 ( 2.8 - 6.0)E 1

( 0/ 4)* *( Of 2)* *( 0/ 4)*

CS-134 ( 8) 130. ( 6.8 1 3.7)E D 09 ( 1.3 1 0.1)E 1 ( 9.5 1 4.6)E 0

( 0) ( 0.0 - 1.5)E 1 ( 1.2 - 1.5)E 1 ( -3.3 - 18.9)E O

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

CS-137 ( 8) 150. ( 3.2 1 5.1)E 0 06 ( 1.2 1 0.2)E 1 ( -2.0 1 3.7)E O

( 0) ( -6.8 - 13.6)E 0 ( 1.0 - 1.4)E 1 ( 7.2 - 8.4)E 0

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

BA 140 ( 8) ( 4.7 1 7.7)E D 56 ( 9.1 1 1.6)E O ( 2.2 2 13.6)E 0

( 0) ( 1.6 - 1.8)E 1 ( 7.4 - 10.7)E O ( 3.6 - 2.7)E 1

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

CE-141 ( 8) ( -1.0 1 1.7)E 0 59 ( 2.0 2 0.4)E 1 ( 1.5 2 0.4)E 1

( 0) ( +5.9 - 1.5)E O ( 1.7 - 2.4)E 1 ( 6.6 - 24.3)E O

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

CE 144 ( 8) ( -6.7 i 8.7)E O 56 ( 2.1 i 1.3)E i ( 6.7 t 22.9)E O

( 0) ( 2.2 - 1.3)E 1 ( 7.8 - 33.8)E O ( 7.3 - 3.4)E 1

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

TM 232 ( 8) ( 1.6 1 1.4)E 1 59 ( 2.8 1 2.6)E i ( 3.0 2 18.7)E O

( 0) ( -1.6 - 5.1)E 1 ( 1.9 - 53.8)E D ( 3.6 - 5.4)E 1

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

Won-routine refers to the nunber of separate measurements which were greater than ten (10) times the l average background for the period of the report.

- The fraction of snapte analysee yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

i I

l 44 1

J) Irish Moso There is no requirement to collect Irish Moss samples. Semiannual samples were collected from two locations. A gamma analysis was performed oit each sample. Irish Moss sample (ALI-55) was not collected from Ipswich Bay for the predetermined December sample collection time.

Ipswich Bay was barren of Irish Moss samples which was most probably due to over predation by sea urchins.

The only radionuclides detected im 1995 were naturally occurring Be-7 and K-40.

7 4

I l

45

ENVIRONMENTAL RADIOLOGICAL PdOGRAM SUMARY

, SEASROOK STATION, St#sROOK, NH (JANUARY DECEMBLR 1995)

MEDIUN IRISH MOSS UNITS: PCI/KG WET INDICATOR STATIONS STATION WITH HIGHEST MEAN CONTROL STATIONS eeeeeeeeeeeeeeeeet e eeeeeeeeeeeeeeeeee**ee. **eeeeeeeeeeeeee RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUT!NE)* LLD NO. DETECTED ** NO. NO. DETECTED ** WO. DETECTED **

BE 7 ( 3) ( 1.1 2 0.7)E 2 55 ( 1.2 1 0.6)E 2 ( 1.2 2 0.6)E 2

( 0) ( 4.8 - 18.0)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

K 40 ( 3) ( 8.6 i 1.8)E 3 05 ( 8.6 2 1.8)E 3 ( 6.6 1 0.3)E 3

( 0) ( 6.8 - 10.4)E 3 ( 6.8 - 10.4)E 3

( 2/ 2)* *( 2/ 2)* *( 1/ 1)*

CR 51 ( 3) ( 1.3 2 3.5)E 1 55 ( 6.8 1 67.7)E O ( 6.8 i 67.7)E 0

( 0) ( 4.8 - 2.2)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

MN 54 ( 3) ( 2.7 1 6.3)E O 05 ( 2.7 1 6.3)E O ( -4.9 i 5.7)E O

( 0) ( 3.6 - 9.0)E O ( 3.6 - 9.0)E O

( 0/ 2)* *( 0/ 2)* *( 0/ 1)*

Co-57 ( 3) ( 1.4 t 2.9)E 0 55 ( 1.5 2 3.0)E O ( 1.5 1 3.0)E O

( 0) ( 4.3 - 1.5)E O

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

Co-58 ( 3) ( 1.2 i 1.5)E O 55 ( 4.5 t 6.1)E O ( 4.6

6.3)E O

( 0) ( 2.7 - 0.3)E O

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

FE-59 ( 3) ( -9.9 t 12.0)E O 55 ( 5.1 1 2.1)E 1 ( 5.1 2 2.1)E 1

( 0) ( -2.2 - 0.2)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

Co-60 ( 3) ( 1.1 1 1.0)E 1 55 ( 9.9 2 53.4)E 1 ( 9.9 2 53.4)E 1

( 0) ( 2.1 - 0.0)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

MN-65 ( 3) ( 6.0 t 6.4)E 1 05 ( 6.0 1 6.4)E 1 ( 2.0 1 1.6)E 1

( 0) ( 3.7 - 124.0)E O ( -3.7 - 124.0)E O

( 0/ 2)* *( 0/ 2)* *( 0/ 1)* !

SE 7, ( 3) ( 8.8 t 8.5)E O 05 ( 8.8 i 8.5)E 0 ( -3.6 t 6.2)E D

( 0) ( 3.9 - 173.0)E 1 ( 3.9 - 173.0)E -1

( 0/ 2)* *( 0/ 2)* *( 0/ 1)*

s ZR 95 ( 3) ( 1.2 2 1.2)E O 05 ( -1.2 1 1.2)E O ( -6.7 2 10.8)E O

( 0) ( -2,3 - 0.1)E O ( 2.3 - 0.1)E O 4 *( 0/ 2)* *( 0/ 2)* *( 0/ 1)* j

Non-routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

' ** The f raction of sample analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

1 46 l

I

ENVIRONMENTAL RADIOLOGICAL PROGRAM SU M ARY SEA 8 ROOK STATION, SEABROOK, NM (JANUARY - DECEMBER 1995)

MEDIUM: IRISH MOSS UNITS: PCl/KG WET INDICATOR STATIONS STA CONTROL STAT!DNS eeeeeeeeeeeeeeeeee ...T.. ION

.....WI.T.H HIGHE.ST.MEAN

..... .. .... eeeeeee****eeeee RADIONUCLIDES MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON-ROUTINE)* LLD NO. DETECTED ** NO. NO. DETECTED ** NO. DETECTED **

AG 110M( 3) ( 1.9 i 54.0)E 1 55 ( 8.6

7.8)E O ( 8.6

7.8)E O

( 0) ( -5.6 - 5.2)E O

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

RU-103 ( 3) ( 3.9 3.9)E 0 55 ( 5.2 i 6.5)E O ( 5.2 2 6.5)E O

( 0) ( 0.0 - 7.7)E O

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

RU 106 ( 3) ( 1.0 2 1.2)E 1 55 ( -1.9 i 46.8)E 0 ( -1.9 2 46.8)E O

( 0) ( 2.2 - 0.2)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

$8 124 ( 3) ( 5.1 1 13.8)E O $5 ( 1.9 1 1.0)E 1 ( 1.9 t 1.0)E 1

( 0) ( -8.8 - 18.9)E 0

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

l 131 ( 3) ( 1.9 1 1.9)E 1 55 ( 2.5 t 3.6)E 1 ( 2.5 2 3.6)E 1

( 0) ( 0.0 - 3.8)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

CS 154 ( 3) ( 7.4 2 7.4)E O 55 ( 7.9

6.3)E O ( 7.9 2 6.3)E 0

( 0) ( 1.5 - 0.0)E 1

( 0/ 2)* *( 0/ 1)* **( 0/ 1)*

CS-137 ( 3) ( 8.2 1 0.2)E O 05 ( 8.2 t 0.2)E O ( -2.9 i 4.4)E O

( 0) ( 8.0 - 8.4)E 0 ( 8.0 - 8.4)E O

( 0/ 2)* *( 0/ 2)* *( 0/ 1)*

BA 140 ( 3) ( 7.4 1 4.7)E 0 55 ( -6.8

12.1)E O ( -6.8 t 12.1)E O

( 0) ( 1.2 - 0.3)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

CE 141 ( 3) ( 8.0 1 6.9)E O 55 ( 7.5 t 8.6)E D ( 7.5 1 8.6)E O

( 0) ( 1.5 - 0.1)E 1

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

, CE-144 ( 3) ( 1.4 2 0.9)E 1 55 ( 3.2 1 2.5)E 1 ( 3.2 1 2.5)E 1

( 0) ( 5.2 - 23.7)E O

( 0/ 2)* *( 0/ 1)* *( 0/ 1)*

TM-232 ( 3s ( 1. ) . 0.1)E 1 55 ( 1.8 2 2.1)E 1 ( 1.8 1 2.1)E 1

( L? ( 1.2 - -1.1)2 1

( 0/ 7)* *( 0/ 1)* *( 0/ 1)*

Non-routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of snapte analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

47

K) Food Crop There is no requirement for food crop samples as long as the required milk locations are available. Samples are collected from three locations in the growing season. A garnma analysis is performed on each sample.

The only radionuclide detected in 1995 was naturally occurring K-40.

l l

i 1

1 l

l l

1 48

l i

l ENVIRONMENTAL RADIOLOGICAL PROGRAM

SUMMARY

SEABROOK $ TAT 10N, SEAS 400K, NM (JANUARY DECEMBER 1995)

MEDIUM: FOOD CROP UNITS PCl/KG WET

. \

' INDICATOR STAil0NS STAfl0N WITH HIGHEST MEAN e eeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeee. *CONTROL

........... IONS STAT ...

RADIONUCLIDES MEAN MEAN MEAN (20. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON ROUTINE)* LLD po. DETECTED ** No. NO. DETECTED ** NO. DETECTED **

BE 7 ( 10) ( 2.0 t 3.1)E 1 03 ( 1.3 1 4.2)E 1 ( -4.4 i 2.6)E 1

( 0) ( 1.7 - 0.9)E 2 ( 5.2 - 9.1)E 1 ( 9.1 - 0.2)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

K-40 ( 10) ( 1.8 2 0.2)E 3 02 ( 2.0 1 0.4)E 3 ( 1.8 t 0.3)E 3

. ( 0) ( 9.1 - 26.9)E 2 ( 1.2 - 2.7)E 3 ( 1.2 - 2.2)E 3

( 7/ 7)* *( 3/ 3)* *( 3/ 3)*

CR 51 ( 10) ( -8.4 i 152.5)E -1 01 ( 3.0 t 7.6)E 1 ( 4.2 2 1.3)E '

( 0) ( 5.1 - 7.9)E 1 ( 6.9 - *2.6)E i

( 0/ 7)* *( 0/ 1)* *( 0/ 3)*

NN-54 ( 10) ( 2.0 1 3.5)E O 02 ( 3.8

3.8)E D ( 2.7 2 2.9)E O 3.7 - 8.8)E O 1.2 - 8.3)E O

' 7.4 - 17.7)E O ( (

( 0) (

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

Co-57 ( 10) ( -1.1 1 7.9)E 1 01 ( 1.6 1 4.1)E O ( 1.3 2 2.5)E O

( 0) ( 3.2 - 2.5)E O ( -3.1 - 5.6)E O

( 0/ 7)* *( 0/ 1)* *( 0/ 3)*

CO 58 ( 10) ( 3.0 t 3.5)E 0 01 ( 1.7 i 0.8)E 1 ( 4.0 2 1.8)E O

( 0) ( 1.1 - 1.7)E 1 ( 2.1 - 7.7)E O

( 0/ 7)* *( 0/ 1)* *( 0/ 3)* ,

FE 59 ( 10) ( 2.1 i 8.1)E 0 01 ( 2.3 1 2.1)E 1 ( 4.71 6.7)E O

? ( 0) ( -2.5 - 2.8)E 1 ( 2.3 - 18.1)E O 4 *( 0/ 7)* *( 0/ 1)* *( 0/ 3)*

Co 60 ( 10) ( 1.5 1 4.2)E O D6 ( 5.0 t 3.1)E D ( 5.0 t 3.1)E D

( 0) ( 2.1 - 1.0)E 1 ( 2.4 - 106.0)E -1 ( -2.4 - 106.0)E 1

*( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

ZN 65 ( 10) ( -1.5 t 0.5)E 1 06 ( 3.6 i 19.3)E O ( 3.6 t 19.3)E O

( 0) ( 3.9 - 0.3)E 1 ( 3.3 - 3.2)E 1 ( -3.3 - 3.2)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

! SE 75 ( 10) ( 1.5 1 2.9)E O 01 ( 8.2 1 7.1)E O ( 1.6 2 2.6)E D

( 0) ( 7.4 - 15.2)E O ( 5.1 - 3.4)E O

( 0/ 7)* *( 0/ 1)* *( 0/ 3)*

ZR-95 ( 10) ( -5.3 1 36.7)E 1 D6 ( 1.6 2 1.0)E 1 ( 1.6 1 1.0)E 1

( 0) ( 1.4 - 1.7)E 1 ( -4.2 - 326.0)E 1 ( -4.2 - 326.0)E -1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

Non-routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sagte analyses yielding detectable measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

49

ENVIRONMENTAL RADIOLOGICAL PROGRAM SUMMART SEASROOK STATION, SEABROOK, NH (JANUARY DECEMBER 1995)

MEDIUM FOOD CROP UNITS: PCI/KG WET CONTROL INDI .........

.....CATOR ... IONS STATION STAT. .......... WI.TH HIGHEST MEAN

.............. ........ STATIONS e**eee*e RADIONUCLIDZS MEAN MEAN MEAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RANGE (NON-ROUTINE)* LLD NO. DETECTED ** No. NO. DETECTED ** NO. DETECTED **

AG 110M( 10) ( 2.5 2 3.5)E 0 02 ( 9.8

5.3)E O ( 4.8 2 4.8)E O

( 0) ( -8.9 - 20.3)E 0 ( 3.8 - 20.3)E O ( 1.4 - 0.2)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

RU 103 ( 10) ( 1.1 2 4.2)E O 02 ( 4.0 i 10.1)E D ( 2.6 i 4.8)E O

( 0) ( -6.6 - 24.3)E 0 ( 6.1 - 24.3)E 0 ( 7.6 - 6.9)E O

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

RU 106 ( 10) ( 1.4 1 2.1)E 1 01 ( 3.6 2 6.6)E 1 ( -7.7 t 1.7)E i

( 0) ( 1.2 - 0.4)E 2 ( -1.0 - -0.5)E 2

( 0/ 7)* *( 0/ 1)* *( 0/ 3)*

$8 124 ( 10) ( 1.1 i 8.6)E O 02 ( 9.4 2 16.8)E O ( -1.8 t 0.9)E 1

( 0) ( -3.0 - 4.3)E 1 ( -8.8 - 43.0)E O ( 2.8 - 0.0)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

I 131 ( 10) 60. ( 9.6 2 6.4)E 0 06 ( 2.0 i 1028.1)E 2 ( 2.0 t 1028.1)E -2

( 0) ( 2.9 - 0.8)E 1 ( -1.8 - 1.7)E 1 ( 1.8 - 1.7)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

CS 134 ( 10) 60. ( 2.7 t 2.0)E 0 02 ( 5.5 2 3.0)E 0 ( -6.6 i 4.0)E O

( 0) ( -5.8 - 9.8)E O ( 3.7 - 97.7)E 1 ( 1.5 - -0.2)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

CS 137 ( 10) 80. ( 2.6 2 2.6)E O 01 ( 1.2 i 0.7)E 1 ( 5.1 2 1.9)E O

( 0) ( 3.8 - 12.4)E O ( -8. 7 - -2.1)E O

( 0/ 7)* *( 0/ 1)* *( 0/ 3)*

SA-140 ( 10) ( 1.6 2 6.3)E O 02 ( 1.0 t 0.8)E 1 ( 1.7

5.4)E O

( 0) ( -3.1 - 2.6)E 1 ( 1.3 - 26.0)E O ( 7.6 - 11.1)E O

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

CE 141 ( 10) ( 3.6 2 2.5)E O 01 ( 9.3 1 10.1)E O ( 4.8 1 5.1)E O

( 0) ( 4.0 - 14.5)E D ( 2.5 - 14.7)E O

( 0/ 7)* *( 0/ 1)* *( 0/ 3)*

CE-144 ( 10) ( 1.3 t 10.2)E O 03 ( 1.5 t 2.0)E 1 ( -7.0 t 11.3)E O

( 0) ( 3.5 - 5.5)E 1 ( -1.0 - 5.5)E 1 ( 2.9 - 0.7)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

TM 232 ( 10) ( 1.1 2 1.0)E 1 02 ( 3.1 t 0.9)E 1 ( -4.7

18.4)E O

( 0) ( -4.2 - 4.8)E 1 ( 1.8 - 4.8)E 1 ( -2.9 - 3.2)E 1

( 0/ 7)* *( 0/ 3)* *( 0/ 3)*

Non-routine refers to the number of separate measurements which were greater than ten (10) times the average background for the period of the report.

- The fraction of sample analyses yletding detectobte measurements (i.e., greater than three (3) standard deviations) is indicated with *( )*.

50 ,

I

l L)- Direct Radiation l Direct gamma radiation exposure was measured with thermoluminescent

- dosimeters (TLDs). Two TLDs badges are placed at each of-the monitoring stations (Each TLD badge has 3 CaSO Tm elements).

4 A total of forty i seven stations are located offsite, forty of which are required. All badges were collected and readout on a quarterly schedule. All exposure rates were normalized to a 91-day. quarter. A summary of the data is-E shown in Table 3.1, No unusual readings were detected.

! The Yankee Atomic Environmental Laboratory (YAEL), beginning with the-

first quarter of 1995, has been contracted to provide the TLD ;

j procecssing services for Seabrook Station's direct radiation program.

l The YAEL is continuing to utilize all original Panasonic elements for

}

Seabrook Station's environmental TLD badges.

j In the fourth quarter of 1995 their were five TLD badges that were not

reported due to water intrusion in the TLD badges. The badges were found

with the phosphors immersed in water. This water intrusion caused anomalous phosphor readings at read out. The water damage was caused by unusually wet and windy weather that struck the New Hampshire seacoast in the fourth quarter of 1995. Modifications have been made to the badge holder to preclude this from recurring.

a l

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I 51

l l

ENVIRONMENTAL TLD MEASUREMENTS l Net Exposure in aft / Standard Quarter (91 days) l 1995 STA. DESCRIPTION iST QUARTER 2ND QUARTER 3RD QUARTER 4TH QUARTER ANNUAL NO. EXP. S.D. EXP. S.D. EXP. S.D. EXP. S.D. MEAN EXP TL 01 erlasner's Lane 15.4 2 0.7 17.6 s 0.7 16.8 e 0.8 15.7 s 0.9 16.4 TL 02 Landing Road 14.9 s 1.2 15.5 0.9 14.0 s 0.7 13.4 s 0.4 14.5 TL 03 Glade Path 16.4 s 0.5 16.7 e 0.8 15.2 0.9 16.0 2 0.7 16.1 TLa04 letand Path 15.4

0.5 16.3 2 0.7 15.2 2 0.9 (2) 15.6 TL 05 Harbor Road 15.6 0.6 16.1 0.5 14.4 2 0.8 15.5 t 0.9 15.4 TL 06 Berge Landing 14.8 0.4 15.9 2 0.6 15.1 0.8 14.0 t 0.5 15.0 TL 07 Cross Road 13.8 2 0.5 14.7 s 0.7 12.9 0.7 13.4 2 0.5 13.7 TL 08 Farm Lane 16.1 0.6 16.9

0.7 16.0 s 0.9 15.4

0.5 16.1 4

4 TL 09 Farm Lane 16.2 t 0.8 17.3 s 0.8 16.5 a 1.0 15.8 2 0.7 16.5 TL 10 Site soundary 17.0 s 0.5 18.7

0.7 18.6 s 1.4 17.2 t 1.4 17.9 TL 11 Site soundary 14.5 t 0.5 16.0 2 0.7 16.7

1.2 14.4 2 0.6 15.4 TL 12 Site Boundary 15.0 t 0.5 15.8 t 0.6 21.1 1.2 (2) 17.3 TL 13 Inside Site Boundary 19.3 0.9 20.5 t 0.8 20.7 2 1.1 19.7 s 0.8 20.1 TL 14 Treller Park 16.1 2 0.6 17.3 2 0.9 17.820.9 16.1 2 0.6 16.8 TL 15 Brismer's Lane 15.0 s 0.4 17.2

0.6 17.7 a 1.0 16.1 s 1.0 16.5 TL 16 Srlamer's Lane 14.2 s 0.5 14.9 2 0.5 15.4 s 0.9 14.1

0.8 14.7 4

TL-17 South Road 15.5 s 0.5 17.2 a 0.7 18.1 0.9 15.2 a 0.6 16.5 4

TL 18 MILL Road 13.9 0.4 14.9

0.7 16.7 s 1.0 14.4

0.5 15.0 TL-19 Appledore Avenue 14.8 2 0.6 16.0 s 0.7 16.1 2 0.9 (2) 15.6 TL 20 Ashworth Avenue 18.1 2 0.6 18.4 2 0.9 18.6 1.2 17.3 2 0.7 18.1 TL 21 Route 1A 15.9 0.5 16.6 s 0.8 (1) 15.3 2 0.6 15.9 TL 22 Cable Avenue 15.9 2 0.5 18.6 a 1.7 17.2 2 0.9 16.2 a 0.6 17.0 TL 23 Ferry Road 15.4

0.7 16.7 2 0.9 17.2 t 1.2 15.7

0.6 16.3 i TL 24 Ferry Lots Lane 14.9 0.6 16.6

0.7 18.0 2 1.1 15.8 0.6 16.3 TL 25 Elm Street 16.6 2 0.6 17.620.7 17.7 0.8 16.7

1.0 17.2 TL 26 Route 107A 16.4 s 0.5 18.3 s 0.9 18.7 t 1.0 (2) 17.8 TL 27 Highland Street 15.9 0.6 17.1 0.7 17.9

1.2 16.1 0.9 16.8 TL 28 Route 150 15.2 a 0.6 17.6 s 0.7 17.6 0.9 18.0 t 2.8 17.1 TL 29 Frying Pan Lane 16.2 s 0.4 17.3 a 0.6 17.8 t 0.8 18.9 t 2.7 17.6 TL 30 Route 101C 14.5

0.4 16.7

0.6 16.8 2 0.9 17.1 1.3 16.3 TL 31 Alumni Drive 14.9 0.6 16.0 s 0.7 15.6 2 0.8 14.5

0.9 15.3 TL 32 88 Elementary School 14.0 2 0.4 16.0 s 0.9 15.4 0.8 14.9 2 0.5 15.1 l

52

ENVIRONMENTAL TLD MEASUREMENTS Net Exposure in aft / Standard Quarter (91 days) 1995 STA. DESCRIPTION iST QUARTER 2ND QUARTER 3RD QUARTER 4TH QUARTER ANNUAL NO. EXP. S.D. EXP. S.D. EXP. S.D. EXP. S.D. MEAN EXP TL 33 Dock Area 18.2 e 1.3 19.920.8 18.8 2 0.8 19.4 0.7 19.1 TL 34 Bow Street 18.2 t 0.5 20.2 2 0.9 19.9 a 1.1 (2) 19.4 TL 35 Lincoln Ack. School 17.7 0.6 19.4 s 0.7 19.0 t 1.1 17.5 t 0.7 18.4 TL 36 Route 97 (Control) 16.8 t 0.5 18.3 s 0.9 17.7 0.9 16.8 0.5 17.4 TL 37 Plafstow, NH (Control) 16.3 t 0.5 18.3 t 1.0 18.5 t 0.9 16.7 0.5 17.5 TL 38 Hespetoed, NH (Control) 15.3 s 0.5 18.2 s 0.8 18.6 2 1.0 17.1 0.9 17.3 TL 39 Fremont, NM (Control) 17.9 t 0.6 20.6 t 1.1 20.5 t 1.1 18.8 2 0.8 19.5 TL 40 Newmarket, NH (Control) 14.3 0.7 16.6 2 0.7 17.3 2 1.0 15.5 2 0.7 15.9 TL 41 Portsmouth, NH Control) 15.2 0.6 16.5

0.8 16.0 t 0.8 15.1 2 0.9 15.7 TL-42 Ipswich, MA (Control) 14.6 2 0.4 15.6

0.7 14.5

0.8 14.8 0.7 14.9 TL 43 Rocks Road Landing 14.7

0.5 15.7

0.7 15.9 e 0.9 15.6 e 0.6 15.5 TL-44 S8 Education Center 14.6 2 0.6 16.0 t 0.6 16.2 2 0.8 14.8 2 0.8 15.4 TL 45 Hampton Fire Station 15.6 0.5 17.2 t 1.1 16.6 2 1.2 16.9

0.6 16.6 TL-46 Se Beach Police Station 16.7

0.6 17.1

0.8 16.5 t 0.9 16.3 2 0.8 16.7 TL 47 Hampton Falls, Rt. 84 15.2 s 0.8 16.9 2 0.7 16.3 2 0.9 16.3 2 1.0 16.2 l

l Mean of Indicators 15.7 17.0 17.0 16.0 16.5 Mean of Controls 15.8 17.7 17.6 16.4 16.9 NOTES:

(1) TLD lost.

(2) TLD found wet.

t J

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53

s FIGURE 3.6 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30- -30 E -

~

8 20- -20 u . _

8. a - ^A G 0%k M e .

5- v o E

10 -10 0 , ,

i 0

Jan Apr Jul Oct Jan Retrieval Date(1995)

-c- TL-01 Brimmer's Lane

--o- TL-02 Landing Road e TL-03 Glade Path l c TL-04 island Path

--v- TL-05 Harbor Road 54

FIGURE 3.7 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 4

30- -30

~

E lia

~

E 20- -20 1 -

4 _I ?%

E

= M+

p 5_

i

_g 1

10- -10 O , , , , , , , , , ,

i 0 l i

Jan Apr Jul Oct Jan Retrieval Date(1995) l 1

-e- TL-06 Barge Landing l

-o- TL-07 Cross Road e TL-08 Farm Lane c TL-09 Farm Lane

-v- TL-10 Site Boundary 55

FIGURE 3.8 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30- -30

t -

E 20- e 6 -20 x . ofj' k E Y 10- -10 l

0 , , , , , , , , , , ,

i 0

Jan Apr Jul Oct Jan )

Retrieval Date(1995) l

-e- TL-11 Site Boundary

-o- TL-12 Site Boundary e TL-13 Inside Site Boundary

-o- TL-14 Trailer Park 1

-v-- TL-15 Brimmer's Lane i

56 1

l 1

l l

t 1

\

i i

i FIGURE 3.9 !

ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 i

1 30 -30 I

~

E t -

3 -

E 20- -20 v = !

v

$ 8' "

10- -10 0 , , , , , , , , , , , ,

O l Jan Apr Jul Oct Jan Rebieval Date (1995) ,

1 1

-o- TL-16 Brimmer's Lane

-o- TL-17 South Road :

1 1

A TL-18 Mill Road e TL-19 Appledore Avenue !

--v- TL-20 Ashworth Avenue i 57 l

FIGURE 3.10 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30- -30

~

E ~

E s -

E 20- -20 R A ~. -

5

=

%-_ g 10- -10 0 , , , , , , , , , , ,

i 0

Jan Apr Jul Oct Jan Rebieval Date (1995)

-e- TL-21 Route 1 A

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

--o- TL-24 Ferry Lots Lane

-v-- TL-25 Elm Street 58

k FIGURE 3.11 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30- -30

~

E ~

5a -

E 20- -20 g .

a

, g _

T -

E _

10- -10 l

0 , , , , , , , , ,

, , , O Jan Apr Jul Oct Jan f

Retrieval Date(1995) 1

-e- TL-26 Route 107A

--o-- TL-27 Highland Street e TL-28 Route 150 l c TL-29 Frying Pan Lane l

+ TL-30 Route 101C l

l I

59 1

1 FIGURE 3.12 ENVIRONMENTAL RADIATION MEASUREMENTS (USING T1.Ds)

SEABROOK STATION 40 40 30- -30

~

E ~

%s 20 t~ g 3 -20

'li : g c w i 10- -10 0 , ,

i 0

i Jan Apr Jul Oct Jan Retrieval Date(1995)

-e- TL-31 Alumni Drive

-o- TL-32 SB Elementary School e TL-33 Dock Area

-o-- TL-34 Bow Street 1 I

-v-- TL-35 Uncoln Ackerman School 60

FIGURE 3.13 .

ENVIRON MENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30- -30

~

E '

E 3 -

[20 g -

=

-20 e .

E .

10- -10 0 , , , , , , , , , , ,

i 0

Jan Apr Jul Oct Jan Rebieval Date (1995)

-e- TL-36 Route 97 (Control)

-o- TL-37 Plaistow, NH (Control) e TL-38 Hampstead, NH (Control)

-o- TL-39 Fremont. NH (Control)

-v- TL-40 Newmarket, NH (Control) l 61

I l

l FIGURE 3.14 l ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs) I SEABROOK STATION 40 40 30 -30

~

E ~

M2 -

E 20- -20 f; ge!- 7 z-j 10 -10 i et 0 , , i i i i i

i i i 0

i i Jan Apr Jul Oct Jan Retrieval Date (1995)

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

-o- TL 42 Ipswich, MA (Control)

-tr- TL-43 Rocks Road Landing

-e- TL-44 SB Education Center

--v- TL-45 Hampton Fire Station e TL-46 SB Beach Police Station

-*- TL-47 Hampton Falls, Route 84 62

4.0 Quality Assurance Program The Panasonic environmental dosimeters are processed by the YAEL, which is a National Voluntary Laboratory Accreditation Program (NVLAP) certified laboratory. The YAEL environmental TLD program has its own quality assurance program. This program includes instrumentation checks which represent nearly 10% of the TLD's processed, two independent test programs are performed for accuracy and precision. The first program is done in-house while the latter is performed by Battelle Pacific Northwest Laboratories.

Procedures have also been established and training conducted to address quality control in the sampling process.

The YAEL participates in the EPA Interlaboratory Comparison (cross-check) program for those species and matrices routinely analyzed by the laboratory. This provides an independent check of accuracy and precision of the laboratory analysis.

When the results of the cross-check analysis fall outside the control limit, an investigation is made to determine the cause of the problem, and corrective measures are taken, as appropriate.

YAEC maintains an intralaboratory quality control program to assure the validity and reliability of the data. This program includes quality control of laboratory equipment, use of reference standards for calibration, and analysis of blank and spiked samples. The records of the quality control program are reviewed by the responsible cognizant individual, and corrective measures are taken whenever applicable.

A blind duplicate program is maintained in which paired samples from five nuclear plants, including Seabrook Station, are prepared from homogenous media and sent to the laboratory for analysis. The results from this blind duplicate program are used to check for precision in laboratory analyses.

Intralaboratory and EPA Interlaboratory Results The Quality Assurance Program implemented at the analytical laboratory indicated good precision and accuracy in reported values. Table 4.1 shows the results of accuracy and precision for laboratory analyses in 1995 for intralaboratory analyses and EPA interlaboratory cross-check analyses.

The results of the EPA Interlaboratory Comparison Program (Table 4.2),

when considered apart from the remainder of the Quality Assurance Program, were satisfactory with respect to accuracy and precision. Two sets of results for 1995 have not yet been received from the EPA, and consequently not included in this report. As indicated in Table 4.3, 111 analyses were evaluated for bias and a similar number for precision.

All were performed on air particulate filters, milk, and water samples.

Three mean values did not fall within the EPA control limits. These are:

Pu-239 in Water (Ref. date 3/17/95)

Gross Alpha in Water -2 (Ref. dates 7/21 & 10/27-95)

An internal investigation was conducted that included the reprocessing of the original Pu-239 water sample in triplicate. The reprocessed results were within the EPA control limits. It should be noted that Pu-239 analyses in environmental water samples is not required for Seabrook Station's REMP. The EPA in October of 1995, issued a note that stated that there was a built in bias for both July and October Gross Alpha-Beta in water samples. Based on the EPA information and the followup YAEL investigation, no further followup is warrented at this time.

63

The abova Interlaboratory Comparison Program results are provided in compliance with Technical Specification 4.12.3.

Blind Duplicate Quality Assurance Program A total of 49 paired samples (Table 4.4) were submitted by the five YAEL sponsor company, plants for analysis during 1995. The data base used for the duplicate analysis consisted of paired measurements of 26 gamma-emitting nuclides, H-3, Sr-89, Sr-90, Icw levels I-131 and gross beta. All measuren.ents were evaluated, whether the results were considered statistically positive or not, and whether.the net concentration was positive or negative. Of the 1252 paired duplicate measurements evaluated in 1995, 1241 (99.1%) fell within the established acceptance criteria. !

64

ps- - p , _ .a. -

TABLE 4.1

SUMMARY

OF PROCESS CONTROL ANALYSES RESULTS JANUARY-DECEMBER 1995 ACCURACY PRECISION NUMBER OF NUMBER OF NUMBER OF ANALYSES NUMBER OF ANALYSES SAMPLE MEDIA ANALYSIS OUTSIDE OF ANALYSES OUTSIDE ACCEPTANCE ACCEPTANCE CRITERIA CRITERIA AIR CliARCOAL GAMMA 52 2 0 0 AIR FILTER BETA 129 0 0 0 GAMMA 0 0 3 0 STRONTIUM 0 0 0 0 MILK GAMMA 51 1 54 0 IODINE 21 0 21 0 STRONTIUM 18 0 18 0 WATER GROSS ALPHA 3 1 3 0 GAMMA 15 0 15 0 IODINE 3 0 3 0 STRONTIUM 6 0 6 0 TRITIUM 3 0 3 0 SOIL / SEDIMENT GAMMA 0 0 30 0 TOTAL 301 2 153 0 1

65

TABLE 4.2

SUMMARY

OF EPA INTERCOMPARISON RESULTS JANUARY - DECEMBER 1995 EPA YAEL CONTROL LIMITS EPA REF. DATE SAMPLE TYPE NUCLIDE MEAN (pCi/l)

(pci/1) 1-13-95 WATER Sr-89 21.67 11.3 - 28.7 Sr-90 18.13 6.30-23.70 1-27-95 WATER Gross Beta 6.08 0.0 - 14.9 Gross Alpha 5.09 0.0 - 13.7 2-3-95 WATER I-131 (LL) 100.73 82.7- 117.3 3-10-95 WATER H-3 7005.60 6144.2-8725.8 3-17-95 WATER Pu-239 8.91 9.2-13.0 4-18-95 WATER Co-60 28.25 20.3-37.7 Cs-134 18.06 11.3-28.7 Cs-137 12.34 2.3-19.37 Nat.U 9.86 4.8-15.2 Ra-226 14.81 11.1-18.7 Ra-228 17.47 8.9-22.7 l Sr-89 24.8 11.3-28.7

'. Sr-90 15.67 6.3-23.7 6-9-95 WATER Ba-133 79.03 65.1-92.9

- Co-60 38.63 31.3-48.7 Cs-134 46.6 41.3-58.7 I Cs-137 34.66 21.30-38.70 1

1 Zn-65 77.66 62.1-89.9 7-14-95 WATER Sr-89 17.63 11.3-28.7 i Sr-90 8.94 0-16.7 l

i l

l l

66

__. . . . . . = . . . . - - - -

TABLE 4.2 (Cont.)

SUMMARY

OF EPA INTERCOMPARISON RESULTS JANUARY - DECEMBER 1995 YAEL EPA 3 EPA Ref. Date SAMPLE TYPE NUCLIDE MEAN Control (pCi/1) Limits (pCi/1) 7-21-95 WATER Gross Alpha 13.90 15.5-39.5 Gross Beta

22.50 11.7-30.6 6-04-95 WATER H-3 5154.221 4024.1-5716.9 4

6-25-95 Part. Gross Alpha 25.26 14.1-35.9 Filter Gross Beta

83.10 69.3-103 l Cs-137 24.96 16.3-33.7 Sr-90 28.53 21.3-38.7 9-29-95 Milk Cs-137 50.45 41.3-58.7 h-40 1418 1259-1499 1

I 5 1-131LL 100.16 81.7-116.3 SI-89 21.37 11.3-28.7 Sr-90 15.57 6.3-23.7 t

10-6-95 WATER I-131 150.51 122-174 10-27-95 WATER Gross Alpha 21.05 29-73.4 Gross Beta

27.9 17.54-36.49 4

I

All EPA Gross Beta known and associated values adjusted by 1.089.4% to i compensate for reference electron conversion. l i

l I i

\

l l

l >

67

- - -. .. . . .. -- ~ . _ - . - - - -. . . ~ .

s TABLE 4.3

SUMMARY

OF EPA INTERCOMPARISON PROGRAM RESULTS JANUARY - DECEMBER 1995 NO. OF NO. OF NO. OUTSIDE SAMPLE MEDIA SAMPLES ANALYSES EPA CONTROL ANALYZED

LIMITS **

f AIR FILTER

Alpha 1 3 0 Beta 1 3 0 Gamma 1 3 0 4

Strontium 1 3 0 MILK Gamma 1 9 0 I Strontium 1 6 0 WATER j Gross Alpha 3 9 2 Gross Beta 3 9 0 l

Gamma 9 27 0

' Iodine 1 3 0 i

Radium 1 6 0 Strontium 3 18 0 Tritium 2 6 0 Plutonium 1 3 1 Natural U 1 3 0

The number of EPA samples that were analyzed for the specified radionuclide. Each of these samples were analyzed in triplicate.

The number of mean values (from triplicate samples) outside EPA control limits.

i I

68

j TABLE 4.4

SUMMARY

OF BLIND DUPLICATE SAMPLES SUBMITTED ,

I JANUARY - DECEMBER 1995 i

TYPE OF SAMPLE [dit.MBEROFPAIREDSAMPLES SUBMITTED l

COW MILK 21 GROUND WATER 6 SURFACE WATER 15 l

IRISH MOSS 2 MUSSELS 4 FOOD (CRANBERRIES) 1 )

)

TOTAL 49 l l

1 i

69

TABLE 4.5

SUMMARY

OF BLIND DUPLICATE RESULTS January - December 1995 ANALYSIS TOTAL ANALYSIS

TYPE MILK WATER FOOD PROD MARIN E MUSSEL TOTAL I

ALGAE GAMMA 520 (4) 516 (3) 25 44(2) 94 1199 (9)

Sr-89,90 8(2) - - - -

8 (2)

H-3 -

10 - - -

10 Gross -

10 - - -

10 Beta I-131 21 4 - - -

25

The number of paired measurements that did not meet the acceptance criteria are given in parentheses.

l d

70

5.0 Land Use Census Technical Specification 4.12.2 requires that a Land Use census be conducted annually. The 1995 census was completed in accordance with the requirements of the ODCM. The census is used to identify the location of the nearest milk animal, the nearest residence, and the nearest garden of 50 square meters within five miles of plant. The distance from the plant for each of the above locations is shown in Table 5.1.

71

I~

Table 5.1 Land Use census Results Hearest Nearest Nearest Residence Garden Milk Animal Sector (km) (km) (km)

N 1.0 4.2 --

NNE 3.2 3.2 --

NE 2.4 3.2 --

ENE 2.4 -- --

E 2.6 -- --

ESE 2.4 -- --

SE 2.4 -- --

SSE 1.0 -- --

S 1.0 1.1 --

SSW 1.0 1.3 --

SW 1.0 1.3 5.2 WSW 1.1 -- --

W 1.0 1.1 --

WNW 1.0 1.6 6.1 NW 1.0 1.1 7.1 NNW 1.1 1.1 5.5 72

i 6.0 Raforenca 1

6.1 Seabrook Station Technical Specifications ,

6.2 Seabrook Station Off - Site Dose Calculation Manual !

l l

l 73

ATTACHMENT I Sample Analysis Data 1

1 1

1 i

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (PC1/kg) (pCi/kg)

Irish Moss 1 ALI 05 23517 05/24/95 AcTh228 -1.05E+01 2.04E+01 7.63E+01 ALI 05 23517 05/24/95 Ag-110M. 5.22E+00 7.88E+00 2.76E+01 ALI 05 23517 05/24/95 Ba-140 -1.22E+01 1.46E+01 6.44E+01 ALI 05 23517 05/24/95- Be-7 4.82E+01 4.575+01 1.55E+02 ALI 05 23517 05/24/95 Co-141 -1.13E+00 6.58E+00 2.23E+01-ALI 05 23517 05/24/95 Co-144 5.19E+00 1.74E+01 5.82E+01 ALI 05 23517 05/24/95 Co-57 1.48FrDO 2.30E+00 7.54E+00 ALI 05 23517 05/24/95 Co-58 0.32E+00 4.83E+00 1.75E+01.

ALI 05 23517- 05/24/95. Co-60 -0.42E+00 5.68E+00 2.22E+01 ALI 05 23517' 05/24/95 Cr-51 -4.81E+01 4 12E+01 1.66E+02 ALI 05 23517 05/24/95 Cs-134 0.00E+00 4.1 ,2+00 1.72E+01 ALI 05 23517 05/24/95 'Cs-137 8.03E+00 4.te4v00 1.52E+01 ALI 05 23517 05/24/95 Fe-59 -2.19E+01 2.16E&O1 8.77E+01 ALI 05 23517 05/24/95 I-131 3.84E+01 2.69E+01 8.92E+01 ALI 05 23517 05/24/95 K-40 6.77E+03 2.71E+02 2.11E+02

ALI 05 23527 05/24/95 Mn-54 -3.64E+00 4.80E+00 1.80E+01 ALI 05 23517 05/24/95 Ru-103 0.03E+00 5.14E+00 1.89E+01 ALI 05 23517 05/24/95 Ru-106 1.84E+00 3.52E+01 1.35E+02 ALI 05 23517 05/24/95 Sb-124 1.89E+01 9.97E+00 2.87E+01 ALI 05 23517 05/24/95 So-75 0.39E+00 4.26E+00 1.46E+01 ALI 05 23517 05/24/95 En-65 -3.69E+00 1.07E+01 4.14E+01 i ALI 05 23517 05/24/95 Er-95 -5.17E-02 7.41E+00 2.75E+01 ALI 05 26841 12/04/95 AcTh228 -1.25E+01 3.20E+01 1.26E+02 ALI 05 26841 12/04/95 Ag-110M -5.59E+00 1.25E+01 4.97E+01 ALI 05 26841 12/04/95 'Ba-140 -2.71E+00 2.01E+01 1.06E+02 aLI 05 26841 12/04/95 Be-7 1.80E+02 8.86E+01 2.79E+02 ALI 05 26841 12/04/95 Co-141 -1.49E+01 1.42E+01 5.12E+01 ALI 05 26841 12/04/95 Co-144 2.37E+01 3.54E+01 1.17E+02 ALI 05 26841 12/04/95 Co-57 -4.29E+00 4.21E+00 1.52E+01 ALI 05 26841 12/04/95 Co-58 -2.65E+00 9.86E+00 3.80E+01 ALI 05 26841 12/04/95 Co-60 -2.10E+01 1.11E+01 5.15E+01 ALI 05 26841 12/04/95 Cr-51 2.24E+01 1.02E+02 3.69E+02 L ALI 05 26841 12/04/95 Cs-134 -1.48E+01 9.17E+00 3.88E+01

, ALI 05 26841 12/04/95 Cs-137 8.43E+00 8.15E+00 2.91E+01

ALI 05 26841 12/04/95 Fe-59 2.06E+00 4.96E+01 1.91E+02 j ALI 05 26841 12/04/95 I-131 0.00E+00 9.13E+01 3.35E+02 ALI 05 26841 12/04/95 K-40 1.04E+04 5.22E+02 4.56E+02

ALI 05 26841 12/04/95 Mn-54 9.02E+00 7.99E+00 2.68E+01 i ALI 05 26841 12/04/95 Ru-103 7.74E+00 1.13E+01 4.01E+01 ALI 05 26841 12/04/95 Ru-106 -2.22E+01 8.29E+01 3.25E+02 ALI J5 26841 12/04/95 Sb-124 -8.77E+00 1.96E+01 9.45E+01 ALI 45 26841 12/04/95 Se-75 1.73E+01 8.23E+00 2.48E+01 ALI 05 26841 12/04/95 En-65 1.24E+02 4.42E+01 1.60E+02 ALI G5 26841 12/04/95 Er-95 -2.36E+00 1.54E+01 5.99E+01

ALI 55 23518 05/23/95 AcTh228 1.78E+01 2.14E+01 '7.43E+01

! ALI 55 23518 05/23/95 Ag-110M 8.60E+00 7.76E+00 2.65E+01

! ALI 55 23518- 05/23/95 Ba-140 -6.85E+00 1.21E+01 5.51E+01 ALI 55 23518 05/23/95 Be-7 1.23E+02 5.96E+01 1.97E+02 ALI 55 23518 05/23/95 Co-141 7.52E+00 8.63E+00 2.81E+01 ALI 55 23518 05/23/95 Co-144 3.23E+01 2.48E+01 7. 89E4 01 ALI 55 23518 05/23/95 Co-57 1.56E+00 3.02E+00 9.95E+00 e

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pC1/kg) (pC1/kg)

ALI 55 23518 05/23/95 Co-58 4.585+00 6.29E+00 2.15E+01 ALI 55 23518 05/23/95 Co-60 0.993+00 5.34E+00 2.08E+01 ALI 55 23518 05/23/95 Cr-51 6.80E+00 6.77E+01 2.40E+02 ALI 55 23518 05/23/95 Cs-134 7.94E+00 6.32E+00 2.19E+01 ALI 55 23518 05/23/95 Cs-137 -2.91E+00 4.44E+00 1.69E+01 ALI 55 23518 05/23/95 Fe-59 5.09E+01 2.09E+01 6.31E+01 ALI 55 23518 05/23/95 I-131 2.52E+01 3.57E+01 1.24E+02 ALI 55 23518 05/23/95 K-40 6.57E+03 2.81E+02 2.65E+02

ALI 55 23518 05/23/95 Mn-54 -4.87E+00 5.73E+00 2.22E+01 ALI 55 23518 05/23/95 Ru-103 5.15E+00 6.48E+00 2.33E+01 ALI 55 23518 05/23/95 Ru-106 -1.89E+00 4.68E+01 1.78E+02 ALI 55 23518 05/23/95 Sb-124 1.85E+01 9.69E+00 2.63E+01 ALI 55 23518 05/23/95 Se-75 -3.59E+00 6.23E+00 2.27E+01 ALI 55 23518 05/23/95 Zn-65 1.98E+01 1.59E+01 5.36E+01 ALI 55 23518 05/23/95 Zr-95 -6.68E+00 1.08E+01 4.03E+01 1

1

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

_ .~ - . . - . . - - ~ _ . - . - - . . . . - -- -- --- --- . . ..

i i

Seabrook Station Radiological Environmental Data I (January - December 1995) 5 8 AMPLE CONC. STD DEV. . MDC

, TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) 3 ------------------------------------------------------------------------------

i Fish 4

'FHf 03 21705 02/16/95 AcTh228 2.88E+01 3.59E+01 1.25E+02 i FHf 03 21705 02/16/95 Ag-110M 9.19E+00 1.11E+01 3.89E+01 FHf 03 21705 02/16/95 Ba-140 -2.49E-06 1.81E+01 7.35E+01 FHf 03 21705 02/16/95 Be-7 6.28E+01 6.90E+01 2.37E+02 l

- FHf 03 21705 02/16/95 Co-141 -6.29E+00 1.19E+01 4.06E+01 '

FHf 03 21705 02/16/95 Co-144 -1.01E+02 5.70E+01 2.11E+02 FHf 03 21705 02/16/95 Co-57 6.86E+00 4.44E+00 1.40E+01 FHf 03 21705 02/16/95 Co-58 0.54E+00 8.03E+00 2.92E+01 FHf 03 21705 02/16/95 Co-60 -0.94E+00 9.99E+00 3.92E+01 j FHf 03 21705 02/16/95 Cr-51 1.41E+02 8.25E+01 2.69E+02 ,

FHf 03 21705 02/16/95 Cs-134 -1.42E+01 1.77E+01 5.72E+01 i FHf 03 21705 02/16/95 Cs-137 1.33E+01 8.60E+00 2.93E+01 i FHf 03 21705 02/16/95 Fe-59 -1.36E+01 2.71E+01 1.11E+02

. FHf 03 21705 02/16/95 I-131 -3.31E+00 3.01E+01 1.09E+02

, FHf 03 21705 02/16/95 K-40 3.24E+03 2.84E+02 5.13E+02

i FHf 03 21705 02/16/95 Mn-54 -4.87E+00 8.16E+00 3.06E+01 l j FHf 03 21705 02/16/95 Ru-103 -1.30E+01 1.02E+01 . 3.93E+01 1 FHf 03 21705 02/16/95 Ru-106 -1.66E+01 7.30E+01 2.80E+02 j FHf 03- 21705 02/16/95 Sb-124 -1.97E+01 1.35E+01 7.23E+01 FHf 03 21705 02/16/95 Se-75 -8.69E+00 8.44E+00 3.00E+01

, FHf 03 21705 02/16/95 En-65 -2.64E+01 2.03E+01 8.26E+01 FHf 03 21705 02/16/95 Er-95 1.01E+01 1.39E+01 4.79E+01 I

i FHf 03 23626 05/23/95 AcTh228 4.13E+01 3.87E+01 1.35E+02 ,

FHf 03 23626 05/23/95 Ag-110M -4.81E+00 1.19E+01 4.45E+01 j FHf 03 23626 05/23/95 Ba-140 3.48E+01 1.78E+01 5.64E+01 FHf 03 23626 05/23/95 Be-7 5.51E+01 6.77E+01 2.41E+02 FHf 03 23626 05/23/95 Co-141 3.45E+00 1.50E+01 5.12E+01

FHf 03 23626 05/23/95 Co-144 -3.80E+01 4.78E+01 1.69E+02 l FHf 03 23626 05/23/95 Co-57 4.95E+00 6.78E+00 2.29E+01 l FHf 03 23626 05/23/95 Co-58 1.33E+01 8.31E+00 2.72E+01 FHf 03 23626 05/23/95 Co-60 9.43E+00 2.31E+00 2.85E+01

FHf 03 23626 05/23/95 Cr-51 4.34E+01 9.25E+01 3.18E+02

! FHf 03 23626 05/23/95 Cs-134 -3.19E+00 8.13E+00 2.87E+01 FHf 03 23626 05/23/95 Cs-137 9.33E+00 8.95E+00 2.95E+01 i FHf 03 23626 05/23/95 Fa-59 1.94E+01 2.87E+01 9.90E+01 FHf 03 23626 05/23/95 I-131 -3.87E+01 2.56E+01 9.65E+01 FHf 03 23626 05/23/95 K-40 2.98E+03 2.48E+02 4.44E+02

FHf 03 23626 05/23/95 Mn-54 0.30E+00 8.93E+00 3.23E+01 FHf 03 23626 05/23/95 Ru-103 1.25E+00 9.99E+00 3.67E+01 FHf 03 23626 05/23/95 Ru-106 3.96E+01 7.70E+01 2.61E+02 FHf 03 23626 05/23/95 Sb-124 1.37E+01 2.05E+01 7.60E+01 FHf 03 23626 05/23/95 Se-75 -6.15E+00 1.02E+01 3.62E+01 .

FHf 03 23626 05/23/95 En-65 -2.63E+00 2.38E+01 8.85E+01 FHf 03 23626 05/23/95 Er-95 -1.77E+01 1.73E+01 6.60E+01 1

FHf 03 25056 08/21/95 AcTh228 2.28E+01 3.42E+01 1.22E+02 FHf 03 25056 08/21/95 Ag-110M -2.41E+00 1.28E+01 4.86E+01 FHf 03 25056 08/21/95 Ba-140 1.32E+01 8.65E+00 2.70E+01

, FHf 03 25056 08/21/95 Be-7 -1.15E+02 7.65E+01 3.12E+02 ;

FHf 03 25056 08/21/95 Co-141 8.48E+00 1.13E+01 3.70E+01

! FHf 03 25056 08/21/95 Co-144 -5.15E+01 4.17E+01 1.48E+02 i

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

l I

I 1

- . ~ , , - . ~ _ - - - - , _ . __ , , ,-

. . . , . - - .. .- , . - . . . - - _ _ . . ..- -. . -- - - ~ . . . _ . .

Seabrook Station Radiological Environmental Data.

(January - December 1995)

. SAMPLE CONC. STD DEV. MDC TYPE .8TA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg) 1 ------------------------------------------------------------------------------

i FHf 03 25056 08/21/95 Co-57 3.89E+00 5.77E+00 1.89E+01 FHf 03 25056 08/21/95 Co-58 2.88E+00 7.89E+00 2.83E+01 FHf 03 25056 08/21/95 Co-60 9.14E+00 9.27E+00 3.34E+01 FHf 03 25056 08/21/95 Cr-51 4.06E+01 7.03E+01 2.45E+02 FHf 03 25056 08/21/95 Cs-134 -1.11E+01 8.80E+00 3.62E+01 i FHf 03 25056 08/21/95 Co-137 -9.32E+00 8.10E+00 3.21E+01 FHf 03 25056 08/21/95 Fe-59 1.80E+01 2.08E+01 7.67E+01 FHf 03 25056 08/21/95 I-131 -9.44E+00 1.37E+01 5.11E+01 FHf 03 25056 08/21/95 K-40 2.84E+03 2.63E+02 3.55E+02 *

FHf 03 25056 08/21/95 Mn-54 1.04E+01 8.57E+00 2.91E+01 j FHf. 03 25056 08/21/95 Ru-103 -1.54E+01 9.24E+00 3.81E+01 PHf 03 25056 08/21/95 Ru-106 2.98E+01 8.76E+01 3.24E+02 FHf 03 25056 08/21/95 Sb-124 2.16E+01 1.40E+01 4.29E+01

] 1.00E+01 3.73E+01 FHf 03 25056 08/21/95 Se-75 -9.27E+00 FHf 03 25056 08/21/95 En-65 -4.47E+01 2.17E+01 9.32E+01 i

FHf 03 25056 08/21/95 Er-95 -1.08E+01 1.34E+01 5.30E+01 FH 03 26839 11/30/95 AcTh228 1.89E+01 2.90E+01 1.02E+02 FH 03 26839 11/30/95 Ag-110M -1.46E+00 1.08E+01 3.98E+01 FH 03 26839 11/30/95 Ba-140 -8.09E+00 8.29E+00 3.85E+01

FH 03 26839 11/30/95 Be-7 1.52E+01 6.66E+01 2.43E+02 4

FH 03 26839 11/30/95 Co-141 1.06E+01 1.02E+01 3.28E+01

FH 03 26839 11/30/95 Co-144 -2.65E+01 3.52E+01 1.20E+02

, FH 03 26839 11/30/95 Co-57 0.37E+00 4.26E+00 1.42E+01 FH 03 26839 11/30/95 Co-58 -1.21E+00 6.52E+00 2.40E+01

{ Co-60 -2.23E+00 9.50E+00 3.66E+01

FH 03 26839 11/30/95 i FH 03 26839 11/30/95 Cr-51 -6.26E+00 6.89E+01 2.45E+02 FH 03 26839 11/30/95 Co-134 -2.45E+01 1.57E+01 5.21E+01 FH 03 26839 11/30/95 Cs-137 -1.31E+00 7.32E+00 2.61E+01 3

i FH 03 26839 11/30/95 Fe-59 3.23E+00 2.56E+01 9.63E+01 FH 03 26839 11/30/95 I-131 5.29E+00 1.84E+01 6.45E+01 i FH 03 26839 11/30/95 K-40 2.63E+03 2.31E+02 4.70E+02 *

, FH 03- 26839 11/30/95 Mn-54 -1.23E+01 7.38E+00 2.96E+01

FH 03 26839 11/30/95 Ru-103 -2.09E+00 8.66E+00 3.23E+01 FH 03 26839 11/30/95 Ru-106 3.48E+01 6.21E+01 2.26E+02 j FH 03 26839 11/30/95 Sb-124 0.00E+00 1.37E+01 5.47E+01 FH 03 26839 11/30/95 Se-75 1.06E+01 8.80E+00 2.94E+01 i FH 03 26839 11/30/95 En-65 -1.10E+01 1.82E+01 6.90E+01 FH 03 26839 11/30/95 Zr-95 7.77E+00 1.27E+01 4.36E+01 f

j 4

4

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data

, (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (pci/kg) (pci/kg)

-----~~----

I FHf 53 21706 02/15/95 AcTh228 -3.69E+01 5.77E+01 2.17E+02 FHf 53 21706 02/15/95 Ag-110M 1.46E+01 1.80E+01 6.29E+01 i FHf 53 21706 02/15/95 Ba-140 0.00E+00 2.11E+01 8.30E+01 l FHf 53 21706 02/15/95 Be-7 4.34E+01 1.04E+02 3.66E+02 l FHf 53 21706 02/15/95 Co-141 8.29E+00 1.58E+01 5.19E+01 FHf 53 21706 02/15/95 Co-144 -1.11E+02 5.32E+01 1.93E+02 FHf 53 21706 02/15/95 Co-57 1.47E+01 7.41E+00 2.30E+01 FHf 53 21706 02/15/95 Co-58 1.88E+01 1.26E+01 4.05E+01 FHf 53 21706 02/15/95 Co-60 -1.08E+01 1.57E+01 6.40E+01 FHf 53 21706 02/15/95 Cr-51 8.42E+01 1.08E+02 3.71E+02 FHf 53 21706 02/15/95 Co-134 8.33E+00 1.43E+01 5.15E+01 )

FHf 53 21706 02/15/95 Co-137 1.54E+01 1.42E+01 5.01E+01 '

FHf 53 21706 02/15/95 Fe-59 1.67E+01 3.02E+01 1.15E+02 j FHf 53 21706 02/15/95 I-131 1.09E+01 2.39E+01 8.33E+01 !

FHf 53 21706 02/15/95 K-40 3.26E+03 4.26E+02 1.05E+03

I I

FHf 53 21706 02/15/95 Mn-54 -1.60E+01 1.24E+01 4.83E+01 FHf 53 21706 02/15/95 Ru-103 -3.17E+00 1.27E+01 4.66E+01 4

FHf 53 21706 02/15/95 Ru-106 -1.19E+02 1.08E+02 4.36E+02 i l

FHf 53 21706 02/15/95 Sb-124 3.84E+00 2.47E+01 1.01E+02 l FHf 53 21706 02/15/95 Se-75 5.61E+00 1.41E+01 4.69E+01 i FHf 53 21706 02/15/95 En-65 -1.48E+01 3.24E+01 1.24E+02 FHf 53 21706 02/15/95 Zr-95 -2.17E+00 1.91E+01 7.085+01

FHf 53 23627 05/23/95 AcTh228 -9.08E+00 3.26E+01 1.21E+02 FHf 53 23627 05/23/95 Ag-110H -1.50E+00 9.50E+00 3.62E+01 l FHf 53 23627 05/23/95 Ba-140 -3.69E+01 1.79E+01 8.25E+01 l FHf 53 23627 05/23/95 Be-7 3.40E+01 5.69E+01 2.00E+02 FHf 53 23627 05/23/95 Co-141 -3.56E+00 9.18E+00 3.13E+01 FHf 53 23627 05/23/95 Co-144 -1.78E+01 3.27E+01 1.12E+02 1.36E+01 FHf 53 23627 05/23/95 Co-57 -3.58E+00 3.95E+00 FHf. 53 23627 05/23/95 Co-58 1.25E+00 7.92E+00 2.82E+01 FHf 53 23627 05/23/95 Co-60 0.28E+00 9.44E+00 3.64E+01 FHf 53 23627 05/23/95 Cr-51 1.05E+02 ' . 01E + 01 2.32E+02 FHf 53 23627 05/23/95 Cs-134 5.83E+00 3.43E+00 3.02E+01 FHf 53 23627 05/23/95 Cs-137 0.15E+00 7.52E+00 2.85E+01 FHf 53 23627 05/23/95 Fe-59 3.53E+01 .1.60E+01 8.93E+01 FHf 53 23627 05/23/95 I-131 -1.45E+01 2.29E+01 8.45E+01 l

FHf 53 23627 05/23/95 K-40 2.87E+03 2.515+02 4.39E+02

FHf 53 23627 05/23/95 Mn-54 6.79E+00 7.63E+00 2.57E+01 FHf 53 23627 05/23/95 Ru-103 -2.02E+00 7.97E+00 2.94E+01 FHf 53 23627 05/23/95 Ru-106 -6.03E+01 6.32E+01 2.54E+02 FHf 53 23627 05/23/95 Sb-124 -7.72E+00 1.38E+01 6.35E+01 FHf 53 23627 05/23/95 Se-75 1.17E+01 7.42E+00 2.34E+01 FHf 53 23627 05/23/95 En-65 -2.92E+00 1.96E+01 7.31E+01 FHf 53 23627 05/23/95 Zr-95 1.07E+01 1.43E+01 4.84E+01 FH 53 25057 08/21/95 AcTh228 -6.75E+01 4.77E+01 1.99E+02 FH 53 25057 08/21/95 Ag-110M 1.67E+01 1.83E+01 6.39E+01 FH 53 25057 08/21/95 Ba-140 -1.79E+01 1.81E+01 8.09E+01 FH 53 25057 08/21/95 Be-7 -5.26E+01 1.18E+02 4.51E+02 FH 53 25057 08/21/95 Co-141 -1.17E+01 1,79E+01 6.45E+01 FH 53 25057 08/21/95 Co-144 4.09E+01 6.69E+01 2.30E+02 FH 53 25057 08/21/95 Co-57 -6.84E+00 9.16E+00 3.31E+01 FH 53 25057 08/21/95 Co-58 0.00E+00 1.20E+01 4.575+01 FH 53 25057 08/21/95 Co-60 9.36E+00 1.40E+01 5.09E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

. , . , . ., - . ._ w __ _ - _ _ _ _ _ _ e

4 Seabrook station Radiological Environmental Data (January - December 1995)

~

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) 4 FH 53 25057 08/21/95 Cr-51 1.19E+02 9.93E+01 3.35E+02 4 FH 53 25057 08/21/95 Cs-134 2.41E+01 1.92E+01 6.02E+01 FH 53 25057 08/21/95 Cs-137 1.43E+01 1.39E+01 4.61E+01 1.58E+02 1 FH 53 25057 08/21/95 Fe-59 -6.59E+01 3.61E+01 FH 53 25057 08/21/95 I-131 2.10E+01 1.79E+01 6.05E+01 y FH 53 25057 08/21/95 K-40 2.74E+03 3.58E+02 7.57E+02

FH 53 25057 08/21/95 Mn-54 -2.21E+00 1.34E+01 5.07E+01 d

FH ' 53 25057 08/21/95 Ru-103 6.58E+00 1.18E+01 4.33E+01 1 FH 53 25057 06/21/95 Ru-106 ~5.77E+01 9.22E+01 3.58E+02 FH 53 25057 '08/21/95 Sb-124 3.70E+01 2.95E+01 1.02E+02 i FH 53 25057 08/21/95 So-75 7.47E+00 1.47E+01 5.12E+01 FH 53 25057 08/21/95 En-65 -2.77E+01 2.87E+01 1.21E+02 1 FH 53 25057 08/21/95 Er-95 0.67E+00 2.19E+01 8.24E+01 i

FH 53 26840 12/05/95 AcTh228 -9.35E+00 3.68E+01 1.36E+02 FH 53 26840 12/05/95 Ag-110M 8.87E+00 1.19E+01 4.17E+01

., 1PH 53 26840 12/05/95 Ba-140 -4.68E+00 9.06E+00 4.01E+01 FH 53 26840 12/05/95 Be-7 -3.58E+01' 5.98E+01 2.25E+02 FH 53 26840 12/05/95 Co-141 -3.61E+00 8.45E+00 2.89E+01

.FH 53 26840 12/05/95 Co-144 1.77E+00 3.29E+01 1.10E+02 FH 53 26840 12/05/95 Co-57 0.00E+00 4.23E+00 1.41E+01 FH 53. 26840 12/05/95 Co-58 -5.05E+00 7.50E+00 2.86E+01 l

FH 53 26840 12/05/95 Co-60' 5.49E+00 7.73E+00 2.88E+01

, FH 53 26840 12/05/95 Cr-51 1.2SE+02 6.51E+01 2.10E+02 FH 53 26840 12/05/95 Cs-134 3.42E+00 1.59E+01 4.875+01 FH 53 26840 12/05/95 Cs-137 0.95E+00 7.98E+00 3.01E+01 l 1.15E+02 FH' 53 26840 12/05/95 Fe-59 -2.42E+01 2.83E+01 FH 53 26840 12/05/95 I-131 1.91E+01 1.13E+01 3.70E+01 FH 53 26840 12/05/95 K-40 2.71E+03 2.63E+02 4.99E+02

FH 53 26840 12/05/95 Mn-54 7.46E+00 7.10E+00 2.37E+01

. FH 53 26840 12/05/95 Ru-103 -1.93E+00 6.95E+00 2.59E+01 i

FH 53 26840 12/05/95 Ru-106 2.87E+00 6.39E+01 2.43E+02 FH 53 26840 12/05/95 sb-124 3.59E+00 1.83E+01 7.23E+01 FH 53 26840 12/05/95 Se-75 -1.68E+00 6.91E+00 2.40E+01 i

! FH 53 26840 12/05/95 En-65 -1.88E+01 1.98E+01 7.83E+01 FH 53 26840 12/05/95 Er-95 1.05E+01 1.17E+01 3.97E+01 l

l 4

e d

i

?-

I f

f

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

J

+

_ _ _ . , , . - , , y w.

i i

j 8eabrook Station Radiological Environmental Data

(January - December 1995) ;

- SAMPLE CONC. STD DEV. MDC

. TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

American Lobster (Homarus americanus)

HA 04 23515 05/25/95 AcTh228 -2.23E+01 3.11E+01- 1.19E+02

HA 04 23515 05/25/95 Ag-110M 6.12E+00 1.02E+01 3.65E+01 HA 04 23515 05/25/95 Ba-140 1.51E+01 3.01E+01 1.13E+02 l

HA 04 23515 05/25/95 Be-7 -7.28E+01 7.05E+01 2.72E+02 NA 04 23515 05/25/95 Co-141 9.29E+00 1.24E+01 4.04E+01 HA 04 23515 05/25/95 Co-144 -1.68E+01 3.21E+01 1.10E+02

' HA 04_ 23515 05/25/95 Co-57 2.14E+00 4.05E+00 1.33E+01 HA 04 23515 05/25/95 Co-58 -8.99E+00 9.05E+00 3.47E+01 HA 04 23515 05/25/95 Co-60 1.31E+01 6.58E+00 2.02E+01 HA 04 23515 05/25/95 -Cr-51 -1.40E+02 8.89E+01 3.41E+02 HA 04 23515 05/25/95 Co-134 4.37E+00 8.28E+00 3.00E+01 l 8.09E+00 2.99E+01

HA 04 23515 05/25/95 Co-137 2.48E+00 HA 04 23515 05/25/95 Fe-59 5.23E+01 2.92E+01 9.50E+01 i - HA 04 23515 05/25/95 I-131 -4.40E+01 5.59E+01 2.09E+02 HA 04 23515 05/25/95 K-40 2.12E+03 2.30E+02 4.73E+02

6.82E+00 2.67E+01 J

HA 04 23515 05/25/95 Hn-54 -7.08E+00 l HA 04 23515 05/25/95 Ru-103 4.99E+00 9.16E+00 3.24E+01 i HA 04' 23515 05/25/95 Ru-106 -6.10E+00 7.67E+01 2.88E+02

. HA 04 23515 05/25/95 sb-124 -3.71E+01 1.87E+01 9.39E+01 HA 04 23515 05/25/95 Se-75 5.39E+00 7.39E+00 2.44E+01 l 6.17E+01

HA 04 23515 05/25/95 En-65 0.00E+00 1.62E+01

HA 04 23515 05/25/95- Er-95 -2.75E+00 1.19E+01 4.52E+01 HA 04 26613 11/21/95 AcTh228 8.19E+01 3.69E+01 1.15E+02 4 HA 04 26613 11/21/95 Ag-110H 1.21E+01 1.24E+01 4.29E+01 HA 04 26613 11/21/95 Ba-140 4.54E+01 1.88E+01 4.39E+01 i HA 04 26613 11/21/95 Be-7 1.24E+01 7.15E+01 2.60E+02 l

HA 04 26613 11/21/95 Co-141 -3.38E+00 1.19E+01 4.06E+01 l l HA 04 26613 11/21/95 Co-144 -2.81E+01 3.88E+01 1.34E+02 l HA 04 26613 11/21/95 Co-57 1.03E+01 5.48E+00 1.70E+01 '

HA 04 26613 11/21/95 Co-58 5.49E+00 9.45E+00 3.28E+01

[ Co-60 2.02E+01 1.04E+01 3.31E+01 HA 04 26613 11/21/95 HA 04 26613 11/21/95 Cr-51 2.89E+01 1.05E+02 3.68E+02 RA 04 26613 11/21/95 Cs-134 6.39E+00 8.46E+00 3.04E+01

HA 04 26613 11/21/95 Cs-137 -0.24E+00 9.46E+00 3.58E+01

~

HA 04 26613 11/21/95 Fe-59 3.89E+01 2.91E+01 9.99E+01 l HA 04 26613 11/21/95 I-131 1.80E+01 4.16E+01 1.46E+02 '

j HA 04 26613 11/21/95 K-40 2.14E+03 2.60E+02 5.80E+02 *

! HA 04 26613 11/21/95 Mn-54 -4.98E+00 8.76E+00 3.28E+01 HA 04 26613 11/21/95 Ru-103 9.35E+00 9.35E+00 3.21E+01

]

HA 04 26613 11/21/95 Ru-106 9.93E+01 6.89E+01 2.36E+02 HA ' 04 26613 11/21/95 Sb-124 1.26E+01 2.36E+01- 8.89E+01 HA 04 26613 11/21/95 Se-75 -1.18E+01 9.15E+00 3.30E+01 HA 04 26613 11/21/95 En-65 1.06E+01 1.90E+01 6.89E+01

, HA 04 26613 11/21/95 Er-95 3.73E+00 1.55E+01 5.54E+01 1

I

< l 4

Radioactivity detected (i.e., Concentration is > 3 Std. Deviationsi.

I l

1 l

1

- -_ - - . . - . - -,,4 -.m-. . ---

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. HDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

HA 54 23516 05/22/95 AcTh228 3.10E+01 3.32E+01 1.11E+02

- HA 54 23516 05/22/95 Ag-110M 9.14E+00 1.03E+01 3.45E+01-HA 54 23516 05/22/95 Ba-140 -2.28E+01 1.73E+01 7.23E+01 HA- 54 23516 05/22/95 Be-7 -1.45E+01 6.79E+01 2.45E+02 HA 54 23516 05/22/95 Co-141 -6.50E+00 1.05E+01 3.56E+01 HA 54 23516 05/22/95 Co-144 -2.18E+01 3.44E+01 1.17E+02 HA 54 23516 05/22/95 Co-57 -5.75E+00 4.46E+00 1.54E+01 NA 54 23516 05/22/95 Co-58 4.44E+00 7.39E+00 2.55E+01 RA 54 23516 05/22/95 Co-60 6.23E+00 9.86E+00 3.50E+01 HA 54 23516 05/22/95 Cr-51 1.04E+02 7.77E+01 2.59E+02 HA 54 23516 05/22/95 Cs-134 -1.74E+00 7.79E+00 2.83E+01 HA 54 23516 05/22/95 Cs-137 1.16E+01 7.36E+00 2.50E+01 HA 54 23516 05/22/95 Fe-59 -8.61E+00 2.43E+01 9.42E+01 HA - 54 23516 05/22/95 I-131 -3.13E+01 2.32E+01 8.71E+01 HA 54 23516 05/22/95 K-40 2.46E+03 2.35E+02 4.88E+02

HA 54 23516 05/22/95 Mn-54 -1.04E+00 6.46E+00 2.36E+01 HA 54 23516 05/22/95 Ru-103 1.03E+01 8.14E+00 2.73E+01 HA 54 23516 05/22/95 Ru-106 1.98E+02 7.44E+01 2.36E+02 HA 54 23516 05/22/95 Sb-124 -9.49E+00 1.65E+01 6.90E+01 HA 54 23516 05/22/95 Se-75 -9.82E+00 7.82E+00 2.77E+01 NA 54 23516 05/22/95 En-65 2.40E+01 1.58E+01 5.20E+01 HA 54 23516 05/22/95 Er-95 -1.69E+01 1.58E+01 6.26E+01 HA 54 26614 11/20/95 AcTh228 4.42E+00 3.22E+01 1.17E+02 ]

HA 54 26614 11/20/95 Ag-110M 0.00E+00 1.05E+01 3.93E+01 ;

HA 54 26614 11/20/95 Ba-140 6.30E+00 2.56E+01 9.50E+01 HA 54 26614 11/20/95 Be-7 1.33E+02 8.67E+01 2.96E+02 )

HA 54 26614 11/20/95 Co-141 -4.61E+00 1.45E+01 4.88E+01 '

HA 54 26614 11/20/95 Co-144 1.38E+01 4.16E+01 1.37E+02 HA 54 26614 11/20/95 Co-57 -1.41E+00 4.78E+00 1.62E+01 ,

HA 54 26614 11/20/95 Co-58 -1.39E+00 8.60E+00 3.14E+01 )

HA 54 26614 11/20/95 cc 60 -2.31E+00 8.37E+00 3.36E+01 HA 54 26614 11/20/95 Cr-51 -1.68E+02 9.35E+01 3.59E+02 HA 54 26614 11/20/95 Cs-134 -3.20E+00 9.60E+00 3.61E+01 HA 54 26614 11/20/95 Cs-137 5.70E+00 8.57E+00 2.90E+01 HA 54 26614 11/20/95 Fe-59 6.59E+00 3.11E+01 1.18E+02 HA 54 26614 11/20/95 I-131 -9.77E+00 4.77E+01 1.71E+02 HA 54 26614 11/20/95 K-40 1.96E+03 2.20E+02 4.62E+02

HA 54 26614 11/20/95 Mn-54 -1.08E+01 8.38E+00 3.32E+01 HA 54 26614 11/20/95 Ru-103 ~2.44E+01 1.22E+01 4.91E+01 HA 54 26614 11/20/95 Ru-106 1.75E+01 7.72E+01 2.86E+02 HA 54 26614 11/20/95 Sb-124 -0.71E+00 1.80E+01 7.22E+01

HA 54 26614 11/20/95 Se-75 7.87E+00 1.09E+01 3.71E+01 HA' 54 26614 11/20/95 En-65 9.06E+00 2.07E+01 7.41E+01 RA 54 26614 11/20/95 Zr-95 0.00E+00 1.52E+01 5.47E+01 3

a i

i

-

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

.-_ - . . - _ _ _ _ _ - - - _ - - - . - - . - _- - - _ - - - - - -. .- -. ~

' Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE atA. L5N END DATE NUCLIDE (pci/kg) (pC1/kg) (pCi/kg) i Mussel Body (mud = Modiolus, MUt = Mytilus) mud 06 23602 05/24/95 AcTh228 -1.61E+01 3.67E+01 1.39E+02

. mud 06 23602 05/24/95 Ag-110M 4.13E+00 1.17E+01 4.28E+01 i mud 06 23602 05/24/95 Ba-140 -9.12E+00 2.14E+01 8.58E+01 mud 06 23602 05/24/95 Be-7 -4.80E+01 7.62E+01 2.86E+02

mud 06 23602 05/24/95 Co-141 -5.94E+00 1.17E+01 4.02E+01 mud 06 23602 05/24/95 Co-144 1.33E+01 4.13E+01 1.37E+02

' mud 06 23602 05/24/95 Co-57 -8.82E+00 5.23E+00 1.85E+01 mud 06 23602 05/24/95 Co-58 6.90E+00 9.37E+00 3.21E+01 mud 06 23602 05/24/95 Co-60 -8.37E+00 1.18E+01 4.81E+01 mud 06 23602 05/24/95 Cr-51 -8.49E+00 8.70E+01 3.11E+02 mud 06 23602 05/24/95 Co-134 0.00E+00 9.13E+00 3.44E+01 3.03E+01 mud 06 23602 05/24/95 Cs-137 1.01E+01 8.63E+00 mud 06 23602 05/24/95 Fe-59 -0.72E+00 2.66E+01 1.06E+02

. mud 06 23602 05/24/95 I-131 2.59E+01 2.51E+01 8.52E+01 l

mud 06 23602 05/24/95 K-40 1.08E+03 2.06E+02 5.21E+02 * ,

mud 06 23602 05/24/95 Mn-54 -7.07E+00 8.29E+00 3.20E+01 l mud 06 23602 05/24/95 Ru-103 7.43E+00 1.04E+01 3.59E+01 mud 06 23602 05/24/95 Ru-106 -7.76E+01 8.12E+01 3.25E+02 mud 06 23602 05/24/95 Sb-124 -4.26E+01 2.79E+01 1.23E+02 mud 06 23602 05/24/95 So-75 1.85E+00 8.51E+00 2.89E+01 mud 06 23602 05/24/95 En-65 3.63E+00 1.88E+01 7.07E+01 mud 06 23602 05/24/95 Er-95 1.41E+01 1.59E+01 5.38E+01 )

mud 06 26836 12/04/95 AcTh228 5.07E+01 3.93E+01 1.41E+02 mud 06 26836 12/04/95 Ag-110M 4.46E+00 9.29E+00 3.34E+01 mud 06 26836 12/04/95 Ba-140 -1.59E+01 1.00E+01 4.42E+01

. mud 06 26836 12/04/95 Be-7 1.42E+02 7.42E+01 2.48E+02 mud 06 26836 12/04/95 Co-141 0.35E+00 9.63E+00 3.21E+01

mud 06 26836 12/04/95 Co-144 -2.19E+01 3.63E+01 1.23E+02

, mud 06 26836 12/04/95 Co-57 -1.91E+00 4.27E+00 1.45E+01 mud 06 26836 12/04/95 Co-58 -5.72E+00 6.48E+00 2.50E+01 l

! mud 06 26836 12/04/95 Co-60 2.33E+00 8.09E+00 3.06E+01 l mud 06 26836 12/04/95 Cr-51 1.11E+02 6.50E+01 2.13E+02 mud 06 26836 12/04/95 Cs-134 1.18E+00 8.92E+00 3.26E+01 mud 06 26836 12/04/95 Cs-137 1.36E+01 7.06E+00 2.18E+01 mud 06 26836 12/04/95 Fe-59 -9.88E+00 2.01E+01 8.12E+01 mud 06 26836 12/04/95 I-131 -1.42E+01 1.30E+01 4.85E+01 mud 06 26836 12/04/95 K-40 1.05E+03 1.84E+02 5.02E+02

mud 06 26836 12/04/95 Mn-54 -6.16E+00 7.54E+00 2.89E+01

. mud 06 26836 12/04/95 Ru-103 3.80E+00 8.28E+00 2.99E+01

. mud 06 26836 12/04/95 Ru-106 -5.35E+01 7.22E+01 2.79E+02 mud 06 26836 12/04/95 Sb-124 1.22E+01 1.30E+01 4.58E+01 l mud 06 26836 12/04/95 So-75 -1.71E+01 9.03E+00 3.38E+01 mud 06 26836 12/04/95 En-65 1.03E+01 1.41E+01 5.00E+01

. mud 06 26836 12/04/95 Er-95 5.98E+00 1.25E+01 4.31E+01 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

I

. . . - - . . - . - . - . . . ~ ~ . - . . - . _ . - - . . . . - . . . _ - - . . - _ - - - . - -. -

l 1

i Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

~~~~----------------~~-------------------------------~~~-------

1 mud 56 23603 05/23/95 AcTh228 -3.57E+01 2.76E+01 1.04E+02 mud 56 23603 05/23/95 Ag-110M 2.13E+00 8.66E+00 3.09E+01 l mud 56 23603 05/23/95 Ba-140 1.07E+01 1.28E+01 4.42E+01 mud 56 23603 05/23/95 Be-7 3.97E+01 5.82E+01 2.07E+02

)- mud 56 23603 05/23/95 Co-141 6.59E+00 9.63E+00 3.11E+01 mud 56 23603 05/23/95 Co-144 3.38E+01 3.27E+01 1.04E+02 mud 56 23603 .05/23/95 Co-57 2.38E+00 .4.21E+00 1.36E+01 mud 56 23603 05/23/95 Co-58 -0.91E+00 6.40E+00 2.27E+01 mud 56 23603 05/23/95- Co-60 6.53E+00 6.88E+00 2.44E+01 mud 56 23603 05/23/95 Cr-51 -1.18E+02 6.562+01 2.43E+02 mud 56 23603 05/23/95 Cs-134 -3.32E+00 1.33E+01 4.11E+01 mud 56 23603 05/23/95 Cs-137 -7.15E+00 6.26E+00 2.30E+01

- mud 56 23603 05/23/95 Fe-59 4.80E+00 2.03E+01 7.54E+01 4

mud 56 23603 05/23/95 I-131 -2.85E+01 2.15E+01 7.89E+01-J mud 56 23603 05/23/95 K-40 1.68E+03 1.64E+02 3.51E+02

mud 56 23603 05/23/95 Mn-54 2.14E+00 5.91E+00 2.10E+01 mud 56 23603 05/23/95 Ru-103 -6.63E+00 8.03E+00 3.02E+01 mud 56 23603 05/23/95 Ru-106 2.93E+01 6.59E+01 2.37E+02 mud 56 23603 05/23/95 sb-124 7.00E+00 1.51E+01 5.42E+01 i mud 56 23603 05/23/95 Se-75 1.05E+00 7.61E+00 2.63E+01 mud 56 23603 05/23/95 En-65 1.84E+00 1.44E+01 5.19E+01 mud 56 23603 05/23/95 Er-95 -2.97E+00 1.10E+01 3.93E+01 mud 56 26837 12/05/95 AcTh228 -8.14E+00 2.94E+01 1.09E+02 1 mud 56 26837 12/05/95 Ag-110M 1.43E+01 1.10E+01 3.69E+01 !

i mud 56 26837 12/05/95 Ba-140 7.44E+00 1.02E+01 3.72E+01 mud 56 26837 12/05/95 Be-7 6.74E+00 5.43E+01 1.96E+02 mud 56 26837 12/05/95 Co-141 1.06E+01 8.09E+00 2.58E+01

! mud 56 26837 12/05/95 Co-144 7.76E+00 3.01E+01 1.00E+02 mud 56 26837 12/05/95 Co-57 2.29E+00 3.84E+00 1.26E+01 mud 56 26837 12/05/95 Co-58 2.61E+00 4.96E+00 1.78E+01 mud 56 26837 12/05/95 Co-60 -3.36E+00 6.96E+00 2.91E+01 mud 56 26837 12/05/95 Cr-51 -8.85E+01 5.75E+01 2.18E+02 mud 56 26837 12/05/95 Cs-134 1.89E+01 1.15E+01 3.15E+01 mud 56 26837 12/05/95 Cs-137 -7.00E+00 7.33E+00 2.93E+01 i mud 56 26837 12/05/95 Fe-59 0.50E+00 1.63E+01 6.57E+01 i mud 56 26837 12/05/95 I-131 -1.27E+01 1.04E+01 3.96E+01 mud 56 26837 12/05/95 K-40 8.50E+02 1.60E+02 4.06E+02

i mud 56 26837 12/05/95 Mn-54 2.39E+00 5.98E+00 2.12E+01 mud 56 26837 12/05/95 Ru-103 0.00E+00 6.21E+00 2.27E+01 mud 56 26837 12/05/95 Ru-106 2.78E+01 5.51E+01 2.04E+02 mud 56 26837 12/05/95 Sb-124 -6.47E+00 1.33E+01 5.87E+01 mud 56 26837 12/05/95 Se-75 1.50E+01 6.57E+00 1.99E+01 mud 56~ 26837 12/05/95 En-65 -3.25E+01 1.49E+01 6.51E+01 mud 56 26837 12/05/95 Er-95 -2.34E+00 1.10E+01 4.08E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

e , - a. . , . - - --- -- -v.-, - - - - - -

-r--- , , . - , - - w + - - - - ,

5eabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N. EMD DATE NUCLIDE (pci/kg) (pci/kg) (pCi/kg)

MUt 09 23605 05/22/95 AcTh228 1.38E+01 4.15E+01 1.52E+02

MUt 09 23605 05/22/95 Ag-110M 1.24E+01 1.30E+01 4.56E+01 i MUt 09 23605 05/22/95 Ba-140 1.79E+01 1.84E+01 6.69E+01

MUt 09 23605 05/22/95 Be-7 -1.49E+02 8.08E+01 3.37E+02 i Mut 09 23605 05/22/95 Co-141 1.54E+00 1.45E+01 4.90E+01

MUt 09 23605 05/22/95 Co-144 -2.06E+01 4.40E+01 1.53E+02

j. MUt 09 23605 05/22/95 Co-57 2.03E+00 5.38E+00 1.80E+01 MUt 09 23605 05/22/95 Co-58 1.95E+01 1.06E+01 3.27E+01 MUt 09 23605 05/22/95 Co-60 0.00E+00 1.18E+01 4.72E+01 MUt 09 23605 05/22/95 Cr-51 1.88E+02 9.95E+01 3.20E+02 MUt 09 23605 05/22/95 Cs-134 1.17E+01 1.12E+01 3.94E+01 MUt 09 23605 05/22/95 Cs-137 -6.80E+00 1.10E+01 4.38E+01

, MUt 09 23605 05/22/95 Fe-59 -3.775+01 2.66E+01 1.28E+02 MUt 09 23605 05/22/95 I-131 -1.68E+01 3.25E+01 1.22E+02 f MUt 09 23605 05/22/95 K-40 1.23E+03 2.43E+02 6.08E+02

Mut 09 23605 05/22/95 Mn-54 2.76E+00 8.47E+00 3.09E+01 MUt 09 23605 05/22/95 Ru-103 2.72E+00 9.24E+00 3.41E+01

, MUt 09 23605 05/22/95 Ru-106 -6.69E+01 8.61E+01 3.52E+02 MUt 09 23605 05/22/95 sb-124 3.87E-06 2.81E+01 1.14E+02

MUt 09 23605 05/22/95 Se-75 1.37E+01 9.72E+00 3.10E+01 l' 8.89E+01 MUt 09 23605 05/22/95 En-65 -4.72E+00 2.27E+01 MUt 09 23605 05/22/95 Er-95 2.90E+01 1.60E+01 4.89E+01 MUt 09 26615 11/20/95 AcTh228 1.47E+01 3.05E+01 1.10E+02

- MUt 09 26615 11/20/95 Ag-110M 3.86E+00 9.45E+00 3.50E+01

, MUt 09 26615 11/20/95 Ba-140 -1.18E+01 2.30E+01 9.92E+01

MUt 09 26615 11/20/95 Be-7 6.77E+01 6.34E+01 2.17E+02

MUt 09 26615 11/20/95 Co-141 0.00E+00 1.18E+01 3.96E+01 MUt 09 26615 11/20/95 Co-144 2.40E+00 3.37E+01 1.13E+02 MUt 09 26615 11/20/95 Co-57 5.65E+00 4.65E+00 1.49E+01 MUt 09 26615 11/20/95 Co-58 2.64E+00 8.37E+00 2.99E+01

] MUt 09 26615 11/20/95 Co-60 3.36E+00 8.43E+00 3.24E+01 MUt 09 26615 11/20/95 Cr-51 5.64E+01 8.09E+01 2.81E+02

~

MUt 09 26615 11/20/95 Cs-134 1.45E+01 1.75E+01 5.16E+01 1 MUt 09 26615 11/20/95 Cs-137 -3.90E+00 9.09E+00 3.51E+01 MUt 09 26615 11/20/95 Fe-59 -1.21E+01 2.50E+01 1.06E+02

]

MUt 09 26615 11/20/95 I-131 4.39E+01 4.90E+01 1.67E+02 MUt 09 26615 11/20/95 K-40 8.54E+02 1.795+02 4.68E+02

MUt 09 26615 11/20/95 Mn-54 0.98E+00 6.40E+00 2.36E+01 7

MUt 09 26615 11/20/95 Ru-103 -6.50E+00 9.64E+00 3.66E+01 MUt 09 26615 11/20/95 Ru-106 -1.23E+02 8.15E+01 3.31E+02

, MUt 09 26615 11/20/95 Sb-124 1.24E+01 2.32E+01 8.75E+01

. MUt 09 26615 11/20/95 Se-75 -9.36E+00 7.40E+00 2.72E+01 MUt 09 26615 11/20/95 En-65 -1.12E+01 1.90E+01 7.51E+01 MUt 09 26615 11/20/95 Er-95 1.35E+01 1.51E+01 5.12E+01 4

W l

i l 4

1

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

4

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC '

TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pci/kg) (pci/kg)

MUt 59 23606 05/22/95 AcTh228 1.92E+00 3.39E+01 1.25E+02 hut 59 23606 05/22/95 Ag-110M 1.94E+00 1.11E+01 4.12E+01 ,

MUt 59 23606 05/22/95 Be-140 2.73E+01 1.80E+01 5.67E+01 MUt 59 23606 05/22/95 Be-7 5.72E+01 8.00E+01 2.80E+02 MUt 59 23606 05/22/95 Co-141 1.67E+01 1.26E+01 4.01E+01 ,

MUt 59 23606 05/22/95 Co-144 -7.26E+01 3.975+01 1.45E+02 l MUt 59 23606 05/22/95 Co-57 3.88E+00 4.93E+00 1.61E+01 MUt~ 59 23606 05/22/95 Co-58 3.16E+00 8.26E+00 3.00E+01 MUt 59 23606 05/22/95 Co-60 1.15E+01 9.86E+00 3.40E+01 MUt 59 23606 05/22/95 Cr-51 1.04E+01 8.78E+01 3.15E+02 MUt 59 23606 05/22/95 Cs-134 1.17E+01 8.32E+00 2.77E+01 MUt 59 23606- 05/22/95 Co-137 -2.27E+00 9.13E+00 3.595+01 MUt 59 23606 05/22/95 Fe-59 1.46E+01 2.35E+01 8.83E+01 MUt 59 23606 05/22/95 I-131 3.34E+01 3.21E+01 1.09E+02 MUt 59 23606 05/22/95 K-40 4.80E+02 1.89E+02 5.90E+02 MUt 59 23606 05/22/95 Mn-54 7.34E+00 8.02E+00 2.74E+01 MUt 59 23606 05/22/95 Ru-103 -7.46E+00 9.07E+00 3.58E+01 MUt 59 23606 05/22/95 Ru-106 -2.14E+01 7.98E+01 3.13E+02 MUt 59 23606 05/22/95 Sb-124 4.63E+01 2.77E+01 8.60E+01 MUt 59 23606 05/22/95 So-75 9.72E+00 1.03E+01 3.37E+01 MUt. 59 23606 05/22/95 En-65 1.25E+01 2.17E+01 7.86E+01 MUt 59 23606 05/22/95 Er-95 9.50E+00 1.73E+01 6.45E+01 MUt 59 26616 11/20/95 AcTh228 5.388+01 3.49E+01 1.15E+02 MUt 59 26616 11/20/95 Ag-110M 5.79E+00 1.04E+01 3.76E+01 MUt 59 26616 11/20/95 Ba-140 -3.64E+01 2.43E+01 1.13E+02 MUt 59 26616 11/20/95 Be-7 7.84E+01 6.79E+01 2.30E+02 hut 59 26616 11/20/95 Co-141 2.43E+01 1.41E+01 4.42E+01 MUt 59 26616 11/20/95 Co-144 4.07E+00 3.97E+01 1.32E+02 MUt 59 26616 11/20/95 Co-57 4.69E+00 4.70E+00 1.52E+01 MUt 59 26616 11/20/95 Co-58 2.51E+00 7.87E+00 2.83E+01 MUt 59 26616 11/20/95 Co-60 3.34E+00 9.67E+00 3.68E+01 MUt 59 26616 11/20/95 Cr-51 -2.88E+01 9.85E+01 3.55E+02 MUt 59 26616 11/20/95 Cs-134 1.08E+01 1.46E+01 4.31E+01 MUt 59 26616 11/20/95 Cs-137 8.41E+00 8.71E+00 3.09E+01 MUt 59 26616 11/20/95 Fe-59 -2.13E+01 2.88E+01 1.21E+02 MUt 59 26616 11/20/95 I-131 5.95E+01 4.32E+01 1.44E+02 MUt 59 26616 11/20/95 K-40 1.00E+03 1.95E+02 5.06E+02

MUt 59 26616 11/20/95 Mn-54 7.57E+00 7.05E+00 2.36E+01 MUt 59 26616 11/20/95 Ru-103 0.00E+00 1.04E+01 3.76E+01 MUt 59 26616 11/20/95 Ru-106 2.92E+01 7.34E+01 2.71E+02 MUt 59 26616 11/20/95 Sb-124 -7.12E+00 2.05E+01 8.75E+01 l MUt 59 26616 11/20/95 Se-75 -6.66E+00 9.19E+00 3.22E+01 l MUt 59 26616 11/20/95 En-65 -1.02E+01 1.83E+01 7.23E+01 i MUt 59 26616 11/20/95 Er-95 -5.27E+00 1.61E+01 5.97E+01 )

I

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

f.

5 t l

_ _ _ _ _ _ _ = _ _ _ _ _ _ _ _ _ _ _ _ . _ -

. . - . . - -. . . ~ _ -- _ _- _ .~. _- -. - - -

Seabrook Station Radiological Environmental Data i

(January - December 1995) 8 AMPLE CONC. STD DEV. MDC TYPE- STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg)- (pci/kg) l Sediment (SE1 = 0-5 cm, SE2 = 5-10 cm, SE3 = 10-15 cm)

SE1 02 23520 05/24/95 AcTh228 9.62E+02 6.55E+01 1.53E+02

851 02 23520 05/24/95 Ag-110M -1.04E+01 2.32E+01 8.77E+01 l SE1 02 23520 05/24/95 Ba-140 8.19E+01 1.02E+02 3.61E+02 SE1 02 23520 05/24/95 Be-7 -3.73E+01 1.58E+02 5.79E+02 l 4 SE1 02 23520 05/24/95 Co-141 9.65E+01 3.97E+01 1.22E+02 SE1 02 23520 05/24/95 Co-144 3.47E+01 1.00E+02 3.26E+02 SE1 02 23520 05/24/95 Co-57 -7.26E+00 1.22E+01 4.07E+01 SE1 02 23520 05/24/95 Co-58 -3.37E+01 2.06E+01 7.99E+01 SE1 02 23520 05/24/95 Co-60 3.79E+01 1.66E+01 5.06E+01 SE1 02 23520 05/24/95 Cr-51 1.69E+02 2.62E+02 8.96E+02 4 SE1 02 23520 05/24/95 Cs-134 -4.69E+01 1.75E+01 7.24E+01 SE1 02 23520 05/24/95 Cs-137 2.60E+01 1.72E+01 5.87E+01

] 3.26E+02 SE1 02 23520 05/24/95 Fe-59 -1.04E+02 7.95E+01 SE1 02 23520 05/24/95 I-131 2.21E+02 2.18E+02 7.35E+02 8E1 02 23520 05/24/95 K-40 1.23E+04 6.65E+02 8.26E+02

SE1 02 23520 05/24/95 Mn-54 -8.41E+00 1.62E+01 5.93E+01 j SE1 02 23520 05/24/95 Ru-103 3.42E+01 2.15E+01 7.06E+01 SE1 02 23520 05/24/95 Ru-106 2.04E+01 1.51E+02 5.58E+02 SE1 02 23520 05/24/95 Sb-124 -1.15E+01 3.05E+01 1.38E+02 SE1 02 23520 05/24/95 So-75 1.18E+01 1.86E+01 6.11E+01 SE1 02 23520 05/24/95 En-65 2.33E+01 4.12E+01 1.46E+02 l 1.23E+02 SE1 02 23520 05/24/95 Er-95 -1.69E+01 3.33E+01 SE1 02 26844 12/04/95 AcTh228 1.06E+03 7.17E+01 2.55E+02

SE1 02 26844 12/04/95 Ag-110M -5.79E+00 2.05E+01 7.65E+01 SE1 02 26844 12/04/95 Ba-140 9.87E+01 5.91E+01 2.25E+02 SE1 02 26844 12/04/95 Be-7 2.93E+02 1.70E+02 5.76E+02 SE1 02 26844 12/04/95 Co-141 8.88E+01 3.29E+01 1.01E+02 SE1 02 26844 12/04/95 Co-144 -1.27E+01 1.05E+02 3.44E+02 SE1 02 26844 12/04/95 Co-57 -4.66E+00 1.25E+01 4.12E+01

SE1 02 26844 12/04/95 Co-58 -1.03E+01 1.62E+01 5.99E+01 SE1 02 26844 12/04/95 Co-60 1.79E+01 1.61E+01 5.66E+01 SE1 02 26844 12/04/95 Cr-51 -2.70E+02 1.86E+02 6.83E+02 l SE1 02 26844 12/04/95 Cs-134 -3.14E+01 1.79E+01 7.04E+01 SE1 02 26844 12/04/95 Cs-137 2.74E+01 1.77E+01 5.64E+01

SE1 02 26844 12/04/95 Fe-59 5.17E+01 5.38E+01 1.90E+02 SE1 02 26844 12/04/95 I-131 -1.03E+02 6.73E+01 2.51E+02 l

SE1 02 26844 12/04/95 K-40 1.32E+04 6.47E+02 8.44E+02 *

SE1 02 26844 12/04/95 Mn-54 9.93E+00 1.60E+01 5.60E+01 SE1 02 26844 12/04/95 Ru-103 1.07E+01 1.98E+01 7.11E+01 l 4.99E+02 SE1 02 26844 12/04/95 Ru-106 1.32E+02 1.41E+02 SE1 02 26844 12/04/95 Sb-124 -3.90E+01 2.90E+01 1.33E+02

! SE1 02 26844 12/04/95 So-75 -2.15E+01 2.16E+01 7.71E+01 SE1 02 26844 12/04/95 En-65 -6.85E+01 8.20E+01 3.13E+02 l SE1 02 26844 12/04/95 Er-95 5.33E+00 2.97E+01 1.04E+02 SE1 07 23526 05/22/95 AcTh228 3.21E+02 5.70E+01 2.08E+02

SE1 07 23526 05/22/95 Ag-110M. -2.15E+00 1.98E+01 7.36E+01 SEl- 07 23526 05/22/95 Ba-140 4.89E+01 5.93E+01 2.19E+02 SE1 07 23526 05/22/95 Be-7 -1.01E+02 1.24E+02 4.74E+02 SE1 07 23526 05/22/95 Co-141 5.53E+01 2.79E+01 8.65E+01 SE1 07 23526 05/22/95 Co-144 -1.32E+01 6.14E+01 2.06E+02 8E1 07 23526 05/22/95 Co-57 7.27E+00 7.88E+00 2.54E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4 A

, . -.- . ,.-r , -.,y .m . - -

Seabrook Station Radiological Environmental Data (January - December 1995)

I SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) l

SE1 07 23526 05/22/95 Co-58 -1.21E+01 1.56E+01 5.96E+01

! SE1 07 23526 05/22/95 Co-60 -1.55E+00 1.46E+01 5.77E+01

SE1 07 23526 05/22/95 Cr-51 3.79E+02 2.00E+02 6.49E+02

} SE1 07 23526 05/22/95 Co-134 1.03E+01 1.28E+01 4.59E+01 SE1 07 23526 05/22/95 Co-137 -1.95E+01 1.43E+01 '5.75E+01 SE1 07 23526 05/22/95 Fe-59 -8.92E+01 6.38E+01 2.69E+02 SE1 07 23526 05/22/95 I-131 -2.28E+02 1.59E+02 6.27E+02 SE1 07 23526 05/22/95 K-40 1.25E+04 6.18E+02 5.69E+02 *

. SE1 07 23526 05/22/95 Mn-54 -0.90E+00 1.23E+01 4.48E+01 SE1 '07 23526 05/22/95 Ru-103 -7.17E+00 1.74E+01 6.53E+01 SE1 07 23526 05/22/95 Ru-106 9.04E+01 1.14E+02 4.08E+02 SE1 07 23526 05/22/95, sb-124 2.12E+01 2.60E+01 9.84E+01

4.40E+01

SE1 07 23526 05/22/95 So-75 -0.69E+00 1.28E+01 SE1 07 23526 05/22/95 En-65 -3.42E+00 4.00E+01 1.47E+02 SE1 07 23526 05/22/95 Er-95 -1.85E+01 2.72E+01 1.03E+02 SE1 07 26632 11/20/95 AcTh228 5.02E+02 5.12E+01 1.74E+02 *

, SEl- 07 26632 11/20/95 Ag-110M -1.22E+01 1.70E+01 6.53E+01 4

SEl- 07 26632 11/20/95 Ba-140 -3.46E+01 5.12E+01 2.09E+02

{ SE1 07 26632 11/20/95 Be-7 2.49E+02 1.25E+02 4.13E+02 SE1 07 26632 11/20/95 Co-141 -4.02E+01 2.71E+01 9.37E+01 i SE1 07 26632 11/20/95 Co-144 2.70E+01 6.46E+01 2.11E+02

- SE1 07 26632 11/20/95 Co-57 -2.13E+00 8.77E+00 2.92E+01 1.37E+01 4.54E+01 SE1 07 26632 11/20/95 Co-58 1.40E+01

< SE1 07 26632 11/20/95 Co-60 1.75E+00 1.23E+01 4.72E+01 SE1 07 26632 11/20/95 Cr-51 3.12E+01 1.71E+02 6.00E+02 SE1 07 26632- 11/20/95 Cs-134 -1.44E+01 2.99E+01 1.19E+02 l SE1 07 26632 11/20/95 Cs-137 -1.04E+01 1.18E+01 4.35E+01 SE1 07 26632 11/20/95 Fe-59 5.19E+01 4.98E+01 1.76E+02 SE1 07 26632 11/20/95 I-131 1.02E+02 1.18E+02 4.04E+02 SE1 07 26632 11/20/95 K-40 1.25E+04 5.53E+02 5.61E+02

SE1 07 26632 11/20/95 Mn-54 6.63E+00 1.30E+01 4.60E+01 l

t SE1 07 26632 11/20/95 Ru-103 -1.10E+01 1.57E+01 6.13E+01 SE1 07 26632 11/20/95 Ru-106 1.89E+02 1.10E+02 3.72E+02 (

4

SE1 07 26632 11/20/95 Sb-124 -3.95E+00 2.24E+01 9.54E+01 '

SE1 07 26632 11/20/95 So-75 -1.99E+01 1.57E+01 5.75E+01

SE1 07 26632 11/20/95 En-65 -8.28E+01 5.68E+01 2.28E+02

SE1 07 26632 11/20/95 Er-95 8.96E+00 2.81E+01 9.72E+01

! SE1 08 23529 05/22/95 AcTh228 2.27E+02 4.84E+01 1.90E+02 * !

SE1 08 23529 05/22/95 Ag-110M 8.84E+00 1.29E+01 4.68E+01 SE1 08 23529 05/22/95 Ba-140 -3.83E+01 4.69E+01 2.30E+02 i

SE1 08 23529 05/22/95 Be-7 1.67E+02 1.14E+02 3.76E+02 SE1 08 23529 05/22/95 Co-141 -8.65E+00 2.79E+01 9.37E+01 4

SE1 08 23529 05/22/95 Co-144 8.03E+00 6.22E+01 2.06E+02

, SE1 08 23529 05/22/95 Co-57 -3.35E+00 7.92E+00 2.67E+01 SE1 08 23529 05/22/95 Co-58 1.85E+00 1.28E+01 4.69E+01 i SE1 08 23529 05/22/95 Co-60 -1.64E+01 1.50E+01 6.36E+01 j SE1 08 23529 05/22/95 Cr-51 -2.64E+02 1.90E+02 7.19E+02 l SE1 08 23529 05/22/95 Co-134 -3.25E+00 2.04E+01 6.49E+01 SE1 08 23529 05/22/95 Cs-137 -1.47E+00 1.50E+01 5.64E+01 SE1 08 23529 05/22/95 Fe-59 2.91E+01 6.76E+01 2.50E+02 SE1 08 23529 05/22/95 I-131 -2.06E+01 1.96E+02 7.05E+02 SE1 08 23529 05/22/95 K-40 1.39E+04 6.49E+02 5.82E+02

SE1 08 23529 05/22/95 Mn-54 -1.32E+01 1.31E+01 5.02E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). ;

1 l

l

,-r- -

y --

my- y

t Seabrook Station Radiological Environmental Data (January - December 1995) i SAMPLE CONC. STD DEV. MDC

, TYPE STA. L8N END DATE NUCLIDE (pC1/kg) (pC1/kg) (pci/kg) i --------------.......--.........................-.....----..........---------

f '

SE1 08 23529 05/22/95 Ru-103 1.19E+01 1.52E+01 5.34E+01

! SE1 08 23529 05/22/95 Ru-106 -7.45E+00 1.23E+02 4.63E+02 SE1 08 23529 05/22/95 Sb-124 4.22E+01 2.58E+01 7.76E+01 SE1 08 23529 05/22/95 Se-75 -4.11E+00 1.36E+01 4.69E+01

SE1 08 23529 05/22/95 En-65 4.21E+01 5.71E+01 2.17E+02

! SE1 08 23529 05/22/95 Er-95 .3.03E+01 2.83E+01 9.40E+01 SE1 08 26635 11/20/95 AcTh228 3.27E+02 4.91E+01 .2.16E+02

SE1 08 26635 11/20/95- Ag-110M 1.87E+01 1.84E+01 6.30E+01 l 8E1 08 26635 11/20/95 Ba-140 7.28E+00 4.00E+01 1.57E+02

^

SE1 08 26635 11/20/95 Be-7 1.40E+01 1.45E+02 5.29E+02 SE1 08 26635 11/20/95 Co-141 4.00E+01 2.69E+01 8.49E+01 SE1 08 26635 11/20/95 Ce-144 -6.14E+01 6.78E+01 2.30E+02

SE1 08 26635 11/20/95 Co-57 -0.26E+00 8.55E+00 2.83E+01 j SE1 08 26635 11/20/95 Co-58 1.09E+01 1.43E+01 4.85E+01 j- SE1 08 26635 11/20/95 Co-60 -8.39E+00 1.48E+01 5.83E+01 4 SE1 08 26635 11/20/95 .Cr-51 -9.32E+01 1.72E+02 6.20E+02 SE1 08 26635 11/20/95 Cs-134 -4.48E+01 3.01E+01 1.14E+02 i

j SE1 08 26635 11/20/95 Cs-137 -2.63E+00 1.23E+01 4.37E+01 i SE1 08 26635 11/20/95 Fe-59 4.13E+01 6.81E+01 2.44E+02 )

SE1 08 26635 11/20/95 I-131 0.00E+00 1.46E+02 5.15E+02 i l 7.21E+02 5.13E+02 *

! SE1 08 26635 11/20/95 K-40 2.22E+04

! SE1 08 26635 11/20/95 Mn-54 1.65E+00 1.31E+01 4.71E+01 SE1 08 26635 11/20/95 Ru-103 1.81E+01 2.18E+01 7.67E+01 SE1 08 26635 11/20/95 Ru-106 -7.87E+01 1.21E+02 4.63E+02 l

SE1 08 26635 11/20/95 Sb-124 -2.52E+01 2.55E+01 1.14E+02 SE1 08 26635 11/20/95. Se-75 -1.61E+01 1.54E+01 5.62E+01 SE1 08 26635 11/20/95 En-65 -8.77E+01 3.80E+01 1.51E+02 i

SE1 08 26635 11/20/95 Er-95 6.69E+00 2.24E+01 7.93E+01 l SE1 52 23523 05/23/95 AcTh228 8.10E+02 5.52E+01 2.03E+02

SE1 52 23523 05/23/95 Ag-110M 1.41E+01 1.92E+01 6.66E+01

-3.72E+01 5.83E+01 2.45E+02 SE1 52 23523 05/23/95 Ba-140 SE1 52 23523 05/23/95 Be-7 9.70E+01 1.32E+02 4.53E+02 SE1 52 23523 05/23/95 Co-141 3.39E+01 3.09E+01 9.83E+01 l

SE1 52 23523 05/23/95 Co-144 7.82E+01 7.49E+01 2.39E+02

'l 1.19E+00 9.09E+00 2.96E+01 SE1 52 23523 05/23/95 Co-57

. SE1 52 23523 05/23/95 Co-58 -1.67E+01 1.54E+01 5.78E+01 l SE1 52 23523 05/23/95 Co-60 -3.71E+00 1.45E+01 5.66E+01

{ SE1 52 23523 05/23/95 Cr-51 4.31E+02 2.03E+02 6.55E+02

?

SE1 52 23523 05/23/95 Co-134 -3.18E+01 1.39E+01 5.62E+01 SE1 52 23523 05/23/95 Cs-137 -1.43E+01 1.54E+01 5.88E+01 2.48E+02 2

SE1 52 23523 05/23/95 Fe-59 -6.58E+01 6.18E+01 SE1 52 23523 05/23/95 I-131 -1.88E+02 1.70E+02 6.25E+02 SE1 52 23523 05/23/95 K-40 1.19E+04 5.46E+02 4.74E+02 =

SE1 52 23523 05/23/95 Mn-54 -2.06E+01 1.27E+01 4.88E+01 SE1 52- '23523 05/23/95 Ru-103 1.91E+00 1.71E+01 6.12E+01 SE1 52 23523 05/23/95 Ru-106 -3.82E+01 1.29E+02 4.82E+02 SE1 52 23523 05/23/95 Sb-124 -6.84E+00 2.81E+01 1.19E+02 SE1 52 23523 05/23/95 Se-75 -4.30E+00 1.47E+01 4.97E+01 SE1 52- 23523 05/23/95 En-65 -7.93E+00 7.28E+01 2.74E+02 SE1 52 -23523 05/23/95 Er-95 7.22E+01 3.09E+01 9.37E+01 SE1 52 26847 12/05/95 AcTh228 1.34E+03 6.82E+01 1.89E+02

SE1 52 26847 12/05/95 Ag-110M 5.40E+00 1.98E+01 7.06E+01 i

j-

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

1 Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pC1/kg) (pci/kg)

~~-----------------------------

SE1 52 26847 12/05/95 Ba-140 2.69E+01 4.12E+01 1.45E+02 l SE1 52 26847 12/05/95 Be-7 4.16E+01 1.62E+02 5.84E+02 l SE1 52 26847 12/05/95 Co-141 1.76E+01 3.56E+01 1.15E+02 SE1 52 .26847 12/05/95 Co-144 -7.22E+01 1.99E+02 7.51E+02 SE1 52 26847 12/05/95 Co-57 -3.08E+00 1.27E+01 4.15E+01 ,

SE1 52 26847 12/05/95 Co-58 -4.10E+01 1.68E+01 6.57E+01 i SE1 52 26847 12/05/95 Co-60 -1.84E+01 1.59E+01 6.46E+01 SE1 52 26847 12/05/95 Cr-51 -1.72E+02 2.01E+02 7.15E+02 SE1 52 26847 12/05/95 Cs-134 -5.95E+00 1.75E+01 6.44E+01 SE1 52 26847 12/05/95 Cs-137 -1.84E+01 2.87E+01 1.14E+02 SE1 52 26847 12/05/95 Fe-59 4.71E+01 5.41E+01 1.92E+02 SE1 52 26847 12/05/95 I-131 -4.09E+01 9.15E+01 3.24E+02 SE1 52 26847 12/05/95 K-40 1.14E+04 5.45E+02 6.26E+02

SE1 52 26847 12/05/95 Mn-54 1.69E+01 1.62E+01 5.50E+01 SE1 52 26847 12/05/95 Ru-103 -3.61E+01 2.18E+01 8.41E+01 SE1 52 26847 12/05/95 Ru-106 5.41E+01 1.42E+02 5.13E+02 SE1 52 26847 12/05/95 Sb-124 -7.49E+00 3.01E+01 1.20E+02 SE1 52 26847 12/05/95 Se-75 -1.86E+01 2.16E+01 7.62E+01 SE1 52 26847 12/05/95 Zn-65 2.99E+01 3.34E+01 1.15E+02 SE1 52 26847 12/05/95 Zr-95 0.00E+00 3.03E+01 1.06E+02 SE1 57 23532 05/22/95 AcTh228 4.58E+02 6.44E+01 2.34E+02

SE1 57 23532 05/22/95 .Ag-110M 1.54E+01 2.20E+01 7.69E+01 SE1 57 23532 05/22/95 Ba-140 1.29E+02 9.17E+01 3.11E+02 SE1 57 23532 05/22/95 Be-7 -1.09E+02 1.82E+02 6.87E+02 SE1 57 23532 05/22/95 Co-141 -1.85E+01 4.44E+01 1.54E+02 ,

SE1 57 23532 05/22/95 Co-144 -9.47E+01 1.09E+02 3.81E+02 SE1 57 23532 05/22/95 Co-57 1.89E+01 1.38E+01 4.55E+01 SE1 57 23532 05/22/95 Co-58 2.11E+01 1.67E+01 5.62E+01 l SE1 57 23532 05/22/95 Co-60 2.30E+01 1.58E+01 5.22E+01 SE1 57 23532 05/22/95 Cr-51 -3.11E+02 2.17E+02 8.16E+02 SE1 57 23532 05/22/95 Cs-134 3.74E+00 1.22E+01 4.22E+01 SE1 57 23532 05/22/95 Cs-137 -1.11E+01 1.48E+01 5.44E+01 SE1 57 23532 05/22/95 Fe-59 3.22E+01 6.55E+01 2.30E+02 SE1 57 23532 05/22/95 I-131 6.34E+01 2.10E+02 7.38E+02 SE1 57 23532 05/22/95 K-40 1.44E+04 6.68E+02 6.95E+02 *

, SE1 57 23532 05/22/95 Mn-54 -1.25E+01 1.62E+01 6.15E+01 SE1 57 23532 05/22/95 Ru-103 -3.37E+01 2.29E+01 9.14E+01 SE1 57 23532 05/22/95 Ru-106 1.28E+02 1.25E+02 4.14E+02 SE1 57 23532 05/22/95 Sb-124 -7.75E+00 3.14E+01 1.38E+02 SE1 57 23532 05/22/95 Se-75 -4.67E+00 2.09E+01 7.37E+01 SE1 57 23532 05/22/95 Zn-65 1.94E+02 7.85E+01 2.85E+02 SE1 57 23532 05/22/95 Zr-95 4.64E+00 3.74E+01 1.35E+02 ,

1 SE1 57 26638 11/20/95 AcTh228 2.94E+02 4.94E+01 1.92E+02

SE1 57 26638 11/20/95 Ag-110M -2.07E+01 1.79E+01 7.08E+01 SE1 57 26638 11/20/95 Ba-140 3.78E+01 5.57E+01 1.99E+02 SE1 57 26638 11/20/95 Be-7 1.50E+01 1.18E+02 4.38E+02 SE1 57 26638 11/20/95 Co-141 5.82E+00 2.76E+01 9.08E+01 SE1 57 26638 11/20/95 Co-144 1.12E+02 6.50E+01 2.04E+02 SE1 57 26638 11/20/95 Co-57 -3.60E+00 8.76E+00 2.94E+01

' SE1 57 26638 11/20/95 Co-53 1.53E+01 1.48E+01 4.94E+01

=

SE1 57 26638 11/20/95 Co-60 9.96E+00 1.32E+01 4.80E+01 SE1 57 26638 11/20/95 Cr-51 2.00E+02 1.62E+02 5.42E+02 SE1 57 26638 11/20/95 Cs-134 6.90E+00 3.06E+01 1.15E+02

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

d

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

~~~~~~---------------------------------------------~~-----------~~------------

SE1 57 26638 11/20/95 Cs-137 -1.83E+01 1.27E+01 4.84E+01 SE1 57 26638 11/20/95 Fe-59 1.79E+01 5.21E+01 1.95E+02 )

SE1 57 26638 11/20/95 I-131 -1.13E+02 1.27E+02 4.75E+02 I SE1 57 26638 11/20/95 K-40 1.39E+04 6.00E+02 5.74E+02

SE1 57 26638 11/20/95 Nb-95 4.93E+00 1.85E+01 6.51E+01 SE1 57 26638 11/20/95 Ru-103 -1.25E+01 1.52E+01 7.34E+01 i SE1 57 26638 11/20/95 Ru-106 -1.08E+02 1.12E+02 4.42E+02 i SE1 57 26638 11/20/95 Sb-124 3.37E+00 2.27E+01 9.34E+01 ,

SE1 57 26638 11/20/95 Se-75 1.06E+01 1.48E+01 5.07E+01 )

SE1 57 26638 11/20/95 En-65 -4.03E+01 3.77E+01 1.44E+02 (

SE1 57 26638 11/20/95 Er-95 3.61E+01 2.38E+01 7.60E+01 i l

1 1

e

'* Radioactivity detected.(i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

SE2 02 23521 05/24/95 AcTh228 7.83E+02 7.15E+01 2.46E+02 *'

SE2 02 23521 05/24/95 Ag-110M -1.50E+01 2.16E+01 8.03E+01 SE2 02 23521 05/24/95 Ba-140 -7.60E+01 7.77E+01 3.20E+02 SE2 02 23521 05/24/95 Be-7 -6.90E+01 1.60E+02 5.85E+02

, SE2 02 23521 05/24/95 Co-141 -6.91E+00 3.79E+01 1.25E+02 SE2 02 23521 05/24/95 Co-144 -2.03E+02 8.79E+01 3.06E+02 SE2 02 23521 05/24/95 Co-57 1.40E+00 1.17E+01 3.82E+01 SE2 02 23521 05/24/95 Co-58 -1.30E+01 1.79E+01 6.67E+01 SE2 02 23521 05/24/95 Co-60 5.92E+00 1.57E+01 5.77E+01 SE2 02 23521 05/24/95 Cr-51 -3.03E+02 2.47E+02 9.00E+02 SE2 02 23521 05/24/95 Cs-134 3.41E+00 1.47E+01 5.23E+01 SE2 02 23521 05/24/95 Cs-137 -2.62E+01 1.94E+01 7.55E+01 SE2 02 23521 05/24/95 Fe-59 -9.95E+01 5.79E+01 2.48E+02 SE2 02 23521 05/24/95 I-131 1.03E+02 1.90E+02 6.57E+02 SE2 02 23521 05/24/95 K-40 1.47E+04 6.92E+02 7.85E+02

SE2 02 23521 05/24/95 Mn-54 1.04E+00 1.61E+01 5.67E+01 SE2 02 23521 05/24/95 Ru-103 -9.67E+00 2.32E+01 8.45E+01 SE2 02 23521 05/24/95 Ru-106 -1.07E+01 1.32E+02 4.98E+02 SE2 02 23521 05/24/95 Sb-124 1.89E+01 4.14E+01 1.53E+02 SE2 02 23521 05/24/95 Se-75 -1.70E+00 1.81E+01 6.08E+01 SE2 02 23521 05/24/95 Zn-65 1.51E+01 9.75E+01 3.84E+02 SE2 02 23521 05/24/95 Zr-95 3.63E+01 3.76E+01 1.33E+02 SE2 02 26845 12/04/95 AcTh228 8.82E+02 6.60E+01 2.14E+02

SE2 02 26845 12/04/95 Ag-110M 1.86E+01 2.26E+01 7.85E+01 SE2 02 26845 12/04/95 Ba-140 1.05E+01 3.79E+01 1.46E+02 SE2 02 26845 12/04/95 Be-7 1.88E+02 1.47E+02 4.91E+02 SE2 02 26845 12/04/95 Co-141 2.51E+01 2.76E+01 8.87E+01 SE2 02 26845 12/04/95 Ce-144 -1.83E+02 8.72E+01 .3.02E+02 SE2 02 26845 12/04/95 Co-57 7.21E+00 1.07E+01 3.44E+01 SE2 02 26845 12/04/95 Co-58 -2.83E+01 1.50E+01 6.13E+01 SE2 02 26845 12/04/95 Co-60 -2.82E+01 1.62E+01 7.26E+01 SE2 02 26845 12/04/95 Cr-51 1.45E+01 1.81E+02 6.32E+02 4

SE2 02 26845 12/04/95 Cs-134 -4.92E+00 1.83E+01 6.83E+01 SE2 02 26845 12/04/95 Cs-137 1.59E+01 1.84E+01 6.52E+01 SE2 02 26845 12/04/95 Fe-59 -4.82E+01 6.55E+01 2.60E+02 SE2 02 26845 12/04/95 I-131 -6.52E+01 6.19E+01 2.30E+02 SE2 02 26845 12/04/95 K-40 1.32E+04 6.90E+02 7.67E+02

SE2 02 26845 12/04/95 Mn-54 7.76E+00 1.56E+01 5.38E+01 SE2 02 26845 12/04/95 Ru-103 -3.10E+01 1.50E+01 6.16E+01 SE2 02 26845 12/04/95 Ru-106 -5.75E+01 1.52E+02 5.77E+02 SE2 02 26845 12/04/95 Sb-124 0.00E+00 2.86E+01 1.21E+02 SE2 02 26845 12/04/95 Se-75 -2.64E+00 1.69E+01 5.71E+01 SE2 02 26845 12/04/95 En-65 2.49E+01 8.70E+01 3.29E+02 SE2 02 26845 12/04/95 Zr-95 1.54E+01 3.28E+01 1.13E+02 SE2 07 23527 05/22/95 AcTh228 2.61E+02 4.71E+01 1.82E+02 *,

SE2 07 23527 05/22/95 Ag-110M 7.13E+00 1.59E+01 5.71E+01 SE2 07 23527 05/22/95 Ba-140 -2.93E+01 6.87E+01 2.76E+02 SE2 07 23527 05/22/95 Be-7 1.07E+02 1.03E+02 3.53E+02 SE2 07 23527 05/22/95 Co-141 -7.85E+00 2.31E+01 7.75E+01 SE2 07 23527 05/22/95 Co-144 -1.18E+00 5.62E+01 1.86E+02 SE2 07 23527 05/22/95 Co-57 3.94E+00 6.76E+00 2.20E+01 SE2 07 23527 05/22/95 Co-58 -7.59E+00 1.26E+01 4.75E+01 SE2 07 23527 05/22/95 Co-60 2.88E+00 1.36E+01 5.13E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Soabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)-

SE2 07 23527 05/22/95 Cr-51 -1.04E+02 1.65E+02 5.97E+02 SE2 07 23527 05/22/95 Cs-134 -4.69E+00 2.61E+01 9.80E+01 SE2 07 23527 05/22/95 Cs-137 0.95E+00 1.29E+01 4.77E+01 SE2 07 23527 05/22/95 Fe-59 -1.01E+02 5.47E+01 2.33E+02 SE2 07 23527 05/22/95 I-131 -1.07E+02 1.37E+02 5.11E+02 SE2 07 23527 05/22/95 K-40 1.25E+04 5.51E+02 4.57E+02

SE2 07 23527 05/22/95 Mn-54 -8.91E+00 1.02E+01 3.90E+01 SE2 07 23527 05/22/95 Ru-103 -9.44E+00 1.52E+01 5.71E+01 SE2 07 23527 05/22/95 Ru-106 -3.89E+01 1.06E+02 4.05E+02 SE2 07 23527 05/22/95 Sb-124 1.69E+00 1.64E+01 7.54E+01 SE2 07 23527 05/22/95 Se-75 3.49E+00 1.13E+01 3.79E+01 SE2 07 23527 05/22/95 En-65 -4.35E+01 2.98E+01 1.19E+02 SE2 07 23527 05/22/95 Er-95 -3.04E+01 2.32E+01 9.05E+01 SE2 07 26633 11/20/95 AcTh228 2.90E+02 5.53E+01 1.87E+02

SE2 07 26633 11/20/95 Ag-110M -3.00E+00 2.06E+01 7.65E+01 SE2 07 26633 11/20/95 Ba-140 -3.07E+01 4.47E+01 2.07E+02 SE2 07 26633 11/20/95 Be-7 -4.91E+01 1.32E+02 4.88E+02 SE2 07 26633 11/20/95 Co-141 3.60E+01 2.52E+01 7.97E+01 SE2 07 26633 11/20/95 Co-144 7.89E+01 6.57E+01 2.10E+02 SE2 07 26633 11/20/95 Co-57 -5.26E+00 7.95E+00 2.70E+01 SE2 07 26633 11/20/95 Co-58 -1.81E+01 1.62E+01 6.26E+01 SE2 07 26633 11/20/95 Co-60 1.43E+01 1.51E+01 5.40E+01 SE2 07 26633 11/20/95 Cr-51 -3.51E+02 1.81E+02 6.95E+02 SE2 07 26633 11/20/95 Cs-134 1.22E+01 1.32E+01 4.69E+01 SE2 07 26633 11/20/95 Cs-137 -2.42E+00 1.28E+01 4.90E+01 SE2 07 26633 11/20/95 Fe-59 -5.69E+01 6.24E+01 2.55E+02 l SE2 07 26633 11/20/95 I-131 -1.50E+01 1.28E+02 4.64E+02 -

SE2 07 26633 11/20/95 K-40 1.44E+04 6.70E+02 5.84E+02

SE2 07 26633 11/20/95 Mn-54 -3.17E+00 1.17E+01 4.37E+01 SE2 07 26633 11/20/95 Ru-103 -3.48E+01 1.50E+01 6.36E+01 SE2 07 26633 11/20/95 Ru-106 -1.42E+02 1.13E+02 4.62E+02 SE2 07 26633 11/20/95 Sb-124 -3.73E+01 2.45E+01 1.32E+02 SE2 07 26633 11/20/95 Se-75 -2.62E+01 1.25E+01 4.72E+01 SE2 07 26633 11/20/95 En-65 -9.54E+01 4.04E+01 1.66E+02 SE2 07 26633 11/20/95 Zr-95 -1.20E+01 2.76E+01 1.02E+02 SE2 08 23530 05/22/95 AcTh228 2.50E+02 4.52E+01 1.99E+02

SE2 08 23530 05/22/95 Ag-110M -2.75E+00 2.08E+01 7.64E+01 SE2 08 23530 05/22/95 Ba-140 1.08E+02 6.16E+01 1.88E+02 ,

SE2 08 23530 05/22/95 Be-7 -2.00E+02 1.53E+02 6.03E+02 )

SE2 08 23530 05/22/95 Ce-141 1.40E+01 2.94E+01 9.63E+01 '

SE2 08 23530 05/22/95 Co-144 -1.49E+02 6.78E+01 2.42E+02 SE2 08 23530 05/22/95 Co-57 1.21E+00 8.79E+00 2.91E+01 SE2 08 23530 05/22/95 Co-58 4.88E+00 1.42E+01 5.03E+01 SE2 08 23530 05/22/95 Co-60 1.05E+01 1.34E+01 4.86E+01 SE2 08 23530 05/22/95 Cr-51 9.66E+01 2.09E+02 7.25E+02 SE2 08 23530 05/22/95 Cs-134 -1.73E+01 1.27E+01 5.11E+01 SE2 08 23530 05/22/95 Cs-137 -1.12E+01 1.04E+01 4.04E+01 SE2 08 23530 05/22/95 Fe-59 2.18E+01 5.80E+01 2.16E+02 SE2 08 23530 05/22/95 I-131 -2.92E+02 1.91E+02 7.35E+02 SE2 08 23530 05/22/95 K-40 1.45E+04 6.27E+02 5.99E+02

SE2 08 23530 05/22/95 Mn-54 -3.56E+01 1.53E+01 6.22E+01 SE2 08 23530 05/22/95 Ru-103 3.12E+00 2.19E+01 8.05E+01 SE2 08 23530 05/22/95 Ru-106 2.98E+01 1.18E+02 4.36E+02

Rad'ioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l l

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg) j 1

l SE2 08 23530 05/22/95 Sb-124 -1.39E+01 2.46E+01 1.12E+02 )

SE2 08 23530 05/22/95 Se-75 -2.86E+01 1.77E+01 6.58E+01 '

SE2 08 23530 05/22/95 Zn-65 -8.15E+01 3.90E+01 1.57E+02 SE2 08 23530 05/22/95 Zr-95 -1.59E+01 2.80E+01 1.04E+02 SE2 08 26636 11/20/95 AcTh228 2.69E+02 5.72E+01 2.11E+02

SE2 08 26636 11/20/95 Ag-110M 0.00E+00 2.08E+01 7.56E+01 SE2 08 26636 11/20/95 Ba-140 -1.42E+01 6.21E+01 2.48E+02 SE2 08 26636 11/20/95 Be-7 1.77E+01 1.10E+02 3.98E+02 SE2 08 26636 11/20/95 Co-141 -1.57E+01 2.57E+01 8.65E+01 SE2 08 26636 11/20/95 Co-144 5.98E+00 6.35E+01 2.09E+02 SE2 08 26636 11/20/95 Co-57 1.15E+01 8.43E+00 2.67E+01 SE2 08 26636 11/20/95 Co-58 -3.27E+01 1.46E+01 5.99E+01 SE2 08 26636 11/20/95 Co-60 -1.93E+01 1.61E+01 6.68E+01 SE2 08 26636 11/20/95 Cr-51 2.98E+02 1.73E+02 5.64E+02 SE2 08 26636 11/20/95 Cs-134 1.20E+01 3.28E+01 1.26E+02 SE2 08 26636 11/20/95 Cs-137 2.06E+01 1.29E+01 4.38E+01 SE2 08 26636 11/20/95 Fe-59 1.16E+00 6.91E+01 2.59E+02 SE2 08 26636 11/20/95 I-131 -4.04E+01 1.36E+02 4.89E+02 SE2 08 26636 11/20/95 K-40 2.38E+04 8.11E+02 6.57E+02 * ,

SE2 08 26636 11/20/95 Mn-54 1.02E+01 1.33E+01 4.48E+01 '

SE2 08 26636 11/20/95 Ru-103 1.69E+01 1.78E+01 6.07E+01

SE2 08 26636 11/20/95 Ru-106 -2.58E+01 1.19E+02 4.50E+02 SE2 08 26636 11/20/95 Sb-124 3.71E+01 2.62E+01 8.61E+01 SE2 08 26636 11/20/95 Se-75 1.40E+01 1.32E+01 4.27E+01 SE2 08 26636 11/20/95 Zn-65 -7.95E+01 4.89E+01 1.86E+02 SE2 08 26636 11/20/95 Zr-95 -3.85E+01 2.59E+01 1.02E+02 SE2 52 23524 05/23/95 AcTh228 6.95E+02 5.71E+01 2.13E+02

SE2 52 23524 05/23/95 Ag-110M 0.00E+00 1.55E+01 5.80E+01 SE2 52 23524 05/23/95 Ba-140 1.46E-05 6.47E+01 2.54E+02 SE2 52 23524 05/23/95 Be-7 1.01E+02 1.37E+02 4.73E+02 SE2 52 23524 05/23/95 Co-141 4.82E+01 3.11E+01 9.79E+01 SE2 52 23524 05/23/95 Co-144 -2.05E+01 7.17E+01 2.37E+02 SE2 52 23524 05/23/95 Co-57 -8.10E+00 9.36E+00 3.13E+01 SE2 52 23524 05/23/95 Co-58 -2.73E+00 1.71E+01 6.08E+01 SE2 52 23524 05/23/95 Co-60 1.13E+01 1.45E+01 5.23E+01 SE2 52 23524 05/23/95 Cr-51 -9.50E+01 1.95E+02 6.98E+02 SE2 52 23524 05/23/95 Cs-134 6.66E+00 1.43E+01 5.16E+01 SE2 52 23524 05/23/95 Cs-137 7.88E+00 1.47E+01 5.29E+01 SE2 52 23524 05/23/95 Fe-59 -1.45E+01 6.13E+01 2.36E+02 SE2 52 23524 05/23/95 I-131 2.01E+02 1.77E+02 5.93E+02 SE2 52 23524 05/23/95 K-40 1.39E+04 6.08E+02 5.33E+02

SE2 52 23524 05/23/95 Mn-54 1.18E+01 1.45E+01 4.86E+01 i SE2 52 23524 05/23/95 Ru-103 6.08E+00 1.87E+01 6.59E+01 1 SE2 52 23524 05/23/95 Ru-106 2.80E+02 1.14E+02 3.65E+02 SE2 52 23524 05/23/95 Sb-124 1.82E+01 2.88E+01 1.09E+02 SE2 52 23524 05/23/95 Se-75 0.60E+00 1.47E+01 4.93E+01 l SE2 52 23524 05/23/95 Zn-65 1.28E+02 8.14E+01 3.05E+02 SE2 52 23524 05/23/95 Zr-95 1.52E+01 3.10E+01 1.06E+02 SE2 52 26848 12/05/95 AcTh228 8.82E+02 6.69E+01 2.17E+02

SE2 52 26848 12/05/95 Ag-110M -8.46E+00 1.79E+01 6.95E+01 SE2 52 26848 12/05/95 Ba-140 -3.86E+01 4.93E+01 2.~04E+02 SE2 52 26848 12/05/95 Be-7 4.58E+01 1.39E+02 4.90E+02 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l

. _ . . __ _ _ _ . _ _ _ _ _ _ _ _ _ _ . _ _ _. _ _ _ . . _ __ . . . . = _ _ _ .

I l

Seabrook station Radiological Environmental Data '

l (January - December 1995) i SAMPLE CONC. STD DEV. MDC l TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) l SE2 52 26848 12/05/95 Co-141 5.96E+01 3.13E+01 9.78E+01 SE2 52 26848 12/05/95 Co-144 -7.64E+01 8.61E+01 2.89E+02 SE2 52 26848 12/05/95 Co-57 2.16E+00 1.08E+01 3.52E+01 i SE2 52 26848 12/05/95 Co-58 -3.00E+00 1.87E+01 6.66E+01 .

J i SE2 52 26848 12/05/95 Co-60 -6.06E+00 1.82E+01 7.16E+01 SE2 52 26848 12/05/95 Cr-51 4.45E+01 1.76E+02 6.14E+02

, SE2 52 26848 12/05/95 Cs-134 2.28E+00 1.60E+01 5.89E+01 SE2 52 26848 12/05/95 Cs-137 2.95E+01 1.70E+01 5.72E+01 SE2 52 26848 12/05/95 Fe-59 0.00E+00 5.88E+01 2.25E+02

- SE2 52 26848 12/05/95 I-131 1.24E+02 8.74E+01 2.90E+02 SE2 52 26848 12/05/95 K-40 1.28E+04 6.54E+02 7.31E+02

SE2 52 26848 12/05/95 Mn-54 4.40E+00 1.55E+01 5.40E+01 J

SE2 52 26848 12/05/95 Ru-103 4.10E+00 1.69E+01 6.03E+01 SE2 52 26848 12/05/95 Ru-106 9.92E+01 1.44E+02 5.14E+02 i SE2 52 26848 12/05/95 sb-124 1.93E+01 3.40E+01 1.29E+02

SE2 52 26848 12/05/95 so-75 -5.45E+00 1.73E+01 5.86E+01 SE2 52 26848 12/05/95 En-65 1.97E+00 8.24E+01 3.13E+02 SE2 52 26848 12/05/95 Er-P5 5.59E+01 3.19E+01 1.00E+02 2

SE2 57 23533 05/22/95 AcTh228 3.52E+02 4.73E+01 1.61E+02

SE2 57 23533 05/22/95 Ag-110M -1.95E+01 2.04E+01 7.74E+01 l

SE2 57 23533 05/22/95 Ba-140 2.97E+01 5.56E+01 2.10E+02 i SE2 57 23533 05/22/95 Be-7 1.39E+02 1.21E+02 4.08E+02 ,

SE2 57 23533 05/22/95 Co-141 -1.45E+01 2.64E+01 8.86E+01 1

, SE2 57 23533 05/22/95 Co-144 -8.94E+00 6.07E+01 2.02E+02 SE2 57 23533 05/22/95 Co-57 9.49E+00 8.06E+00 2.57E+01 i

SE2 57 23533 05/22/95 Co-58 -5.95E+00 1.54E+01 5.59E+01 SE2 57 23533 05/22/95 Co-60 4.98E+00 1.44E+01 5.38E+01 SE2 57 23533 05/22/95 Cr-51 -9.33E+01 2.02E+02 7.17E+02 SE2 57 23533 05/22/95 Cs-134 -4.79E+01 2.94E+01 1.10E+02 4

SE2 57 23533 05/22/95 Cs-137 -1.86E+01 1.26E+01 5.05E+01

! SE2 57 23533 05/22/95 Fe-59 -4.03E+01 5.88E+01 2.33E+02 SE2 57 23533 05/22/95 I-131 1.21E+02 1.46E+02 5.01E+02 SE2 57 23533 05/22/95 K-40 1.39E+04 5.97E+02 6.49E+02 * ,

SE2 57 23533 05/22/95 Mn-54 -1.55E+01 1.02E+01 4.06E+01 l 5.44E+01 SE2 57 23533 05/22/95 Ru-103 1.96E+01 1.61E+01 j SE2 57 23533 05/22/95 Ru-106 -1.71E+01 9.01E+01 3.47E+02 )

SE2 57 23533 05/22/95 Sb-124 -2.82E+01 2.31E+01 1.15E+02 ;

SE2 57 23533 05/22/95 Se-75 -1.45E+01 1.37E+01 4.79E+01 1 SE2 57 23533 05/22/95 En-65 2.18E+00 6.35E+01 2.51E+02 SE2 57 23533 05/22/95 Zr-95 5.46E+00 2.51E+01 8.82E+01 SE2 57 26639 11/20/95 AcTh228 2.82E+02 5.37E+01 1.65E+02 * !

SE2 57 26639 11/20/95 Ag-110M 0.00E+00 1.63E+01 6.13E+01 1 SE2 57 26639 11/20/95 Ba-140 -7.73E+01 4.98E+01 2.38E+02 (

SE2 57 26639 11/20/95 Be-7 4.58E+01 1.15E+02 4.10E+02 i SE2 57 26639 11/20/95 Co-141 1.47E+01 2.33E+01 7.60E+01 SE2 57 26639 11/20/95 Co-144 -1.11E+01 5.92E+01 1.98E+02 !

SE2 57 26639 '11/20/95 Co-57 -3.10E+00 7.39E+00 2.49E+01 SE2- 57 26639 11/20/95 Co-58 -1.16E+01 1.33E+01 5.18E+01 !

SE2 57 26639 11/20/95 Co-60 5.80E+00 1.19E+01 4.52E+01 !

SE2 57 26639 11/20/95 Cr-51 -9.84E+01 1.52E+02 5.62E+02 SE2 57 26639 11/20/95 Cs-134 -1.55E+01 1.26E+01 5.04E+01 SE2 57 26639 11/20/95 Cs-137 -1.86E+01 1.19E+01 4.96E+01 SE2 57 26639 11/20/95 Fe-59 -5.92E+01 5.88E+01 2.41E+02

Radioactivity detected (i.e., Concentration is > 3 std. Deviations).

a

,_ , - e- - -

- - . ~ . . . .. -.

l l

l Seabrook Station Radiological Environmental Data (January - December 1995)

ShMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pCi/kg)

SE2 57 26639 11/20/95 I-131 -8.45E+01 1.34E+02 4.92E+02 SE2 57 26639 11/20/95 K-40 1.29E+04 6.10E+02 5.23E+02

SE2 57 26639 11/20/95 Mn-54 -9.20E+00 1.08E+01 4.19E+01 SE2 57 26639 11/20/95 Ru-103 -1.28E+01 1.45E+01 5.63E+01 SE2 57 26639 11/20/95 Ru-106 1.79E+02 1.09E+02 3.69E+02 SE2 57 26639 11/20/95 Sb-124 1.74E+01 1.98E+01 7.55E+01 SE2 57 26639 11/20/95 So-75 -9.43E+00 1.22E+01 4.34E+01 SE2 57 26639 11/20/95 En-65 -1.90E+01 3.82E+01 1.43E+02 SE2 57 26639 11/20/95 Zr-95 3.05E+01 2.58E+01 8.51E+01 l

I l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l l

l 1

Seabrook Station Radiological Environmental Data (January - December 1995)

SAKPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pCi/kg)

SE3 02 23522 05/24/95 AcTh228 7.45E+02 7.94E+01 3.15E+02

SE3 02 23522 05/24/95 Ag-110M 2.15E+01 2.09E+01 7.20E+01 1 EE3 02 23522 05/24/95 Ba-140 -7.71E+01 8.23E+01 3.52E+02

, SE3 02 23522 05/24/95 Be-7 -2.05E+02 3.73E+02 1.17E+03 SE3 02 23522 05/24/95 Co-141 -1.94E+01 5.07E+01 1.75E+02 SE3 02 23522 05/24/95 Co-144 -7.84E+01 1.25E+02 4.34E+02 SE3 02 23522 05/24/95 Co-57 0.79E+00 1.58E+01 5.42E+01 SE3 02 23522 05/24/95 Co-58 -1.49E+01 2.41E+01 8.98E+01 SE3 02 23522 05/24/95 Co-60 -2.51E+01 1.66E+01 7.03E+01 SE3 02 23522 05/24/95 Cr-51 4.06E+01 2.36E+02 8.28E+02 SE3 02 23522 05/24/95 Cs-134 1.86E+00 1.28E+01 4.98E+01 SE3 02 23522 05/24/95 Cs-137 -1.75Ev01 1.64E+01 6.11E+01 SE3 02 23522 05/24/95 Fs-59 1.48E+01 7.23E+01 2.59E+02 SE3 02 23522 05/24/95 I 131 -1.75E+02 2.12E+02 7.78E+02 l SE3 02 23522 05/24/95 K-40 1.35E+04 6.88E+02 8.62E+02

i SE3 02 23522 05/24/95 Mn-54 1.54E+01 1.94E+01 6.68E+01

! SE3 02 23522 05/24/95 Ru-103 3.81E+01 2.52E+01 8.60E+01 SE3 02 23522 05/24/95 Ru-106 6.52E+01 1.44E+02 4.94E+02 SE3 02 23522 05/24/95 Sb-124 9.17E+00 3.76E+01 1.52E+02 4

SE3 02 23522 05/24/95 Se-75 1.01E+01 2.43E+01 8.33E+01 SE3 02 23522 05/24/95 Zn-65 -1.19E+02 9.61E+01 3.84E+02 SE3 02 23522 05/24/95 Zr-95 -1.48E+01 4.45E+01 1.62E+02 SE3 02 26846 12/04/95 AcTh228 8.67E+02 6.57E+01 2.34E+02

SE3 02 26846 12/04/95 Ag-110M 1.35E+01 2.20E+01 7.78E+01

, SE3 02 26846 12/04/95 Ba-140 -6.45E+01 3.87E+01 1.73E+02 SE3 02 26846 12/04/95 Be-7 -9.15E+01 1.16E+02 4.43E+02 SE3 02 26846 12/04/95 Ce-141 3.50E+01 2.91E+01 9.25E+01

< SE3 02 26846 12/04/95 Co-144 -6.51E+01 9.52E+01 3.17E+02 SE3 02 26846 12/04/95 Co-57 7.39E+00 1.11E+01 3.58E+01 SE3 02 26846 12/04/95 Co-58 8.89E+00 1.48E+01 5.12E+01 SE3 02 26846 12/04/95 Co-60 -5.07E+00 1.69E+01 6.73E+01 SE3 02 26846 12/04/95 Cr-51 1.43E+01 1.72E+02 6.03E+02 SE3 02 26846 12/04/95 Cs-134 2.64E+00 1.62E+01 5.97E+01 SE3 02 26846 12/04/95 Cs-137 1.18E+01 1.61E+01 5.76E+01 ;

SE3 02 26846 12/04/95 Fe-59 -9.93E+01 5.97E+01 2.52E+02 l SE3 02 26846 12/04/95 I-131 -1.74E+01 6.01E+01 2.16E+02 SE3 02 26846 12/04/95 K-40 1.33E+04 6.76E+02 7.25E+02

SE3 02 26846 12/04/95 Mn-54 1.98E+00 1.29E+01 4.64E+01 ;

SE3 02 26846 12/04/95 Ru-103 -2.55E+01 1.67E+01 6.51E+01 '

3E3 02 26846 12/04/95 Ru-106 1.73E+02 1.19E+02 4.08E+02 SE3 02 26846 12/04/95 Sb-124 3.84E+01 3.84E+01 1.36E+02 SE3 02 26846 12/04/95 Se-75 1.42E+01 1.67E+01 5.44E+01 SE3 02 26846 12/04/95 Zn-65 3.02E+01 9.31E+01 3.69E+02 SE3 02 26846 12/04/95 Zr-95 3.26E+01 3.02E+01 9.96E+01 SE3 07 23528 05/22/95 AcTh228 2.75E+02 4.55E+01 1.78E+02

SE3 07 23528 05/22/95 Ag-110M 2.50E+01 1.51E+01 4.74E+01 SE3 07 23528 05/22/95 Ba-140 2.77E+01 6.47E+01 2.40E+02 l SE3 07 23528 05/22/95 Be-7 1.33E+02 1.34E+02 4.56E+02 SE3 07 23528 05/22/95 Co-141 1.02E+01 2.62E+01 8.59E+01 SE3 07 23528 05/22/95 Co-144 -4.18E+01 5.93E+01 2.02E+02 SE3 07 23528 05/22/95 Co-57 3.41E+00 7.96E+00 2.61E+01 l SE3 07 23528 05/22/95 Co-58 -8.23E+00 1.47E+01 5.49E+01 !

SE3 07 23528 05/22/95 Co-60 -5.16E+00 1.09E+01 4.49E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l l

l

[

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pCi/kg) (pci/kg)

-~~---------------------------------------------------------------------------

SE3 07 23528 05/22/95 Cr-51 -2.77E+02 1.73E+02 6.60E+02 SE3 07 23528 05/22/95 Cs-134 1.58E+01 1.11E+01 3.72E+01 SE3. 07 23528. 05/22/95 Cs-137 -3.53E+00 1.27E+01 4.87E+01 SE3 07 23528 05/22/95 Fe-59 -7.01F+01 5.02E+01 2.12E+02 SE3 07 23528 05/22/95 I-131 -1.25E+02 1.66E+02 6.16E+02 SE3 07 23528 05/22/95 K-40 1.32E+04 6.00E+92 5.21E+02

SE3 07 23528 05/22/95 Mn-54 9.36E+00 1.24E+01 4.21E+01 SE3 07 23528 05/22/95 Ru-103' -1.09E+01 1.53E+01 5.86E+01 SE3 07 23528 05/22/95 Ru-106 -1.38E+02 1.25E+02 4.90E+02 SE3 07 23528 05/22/95 Sb-124 -4.69E+00 2.66E+01 1.13E+02 SE3 07 23528 05/22/95 Se-75 2.14E+00 1.28E+01 4.33E+01 SE3 07 23528 05/22/95 En-65 -8.99E+01 6.34E+01 2.63E+02 SE3 07 23528 05/22/95 Er-95 2.08E+01 2.80E+01 1.01E+G2 SE3 07 26634 11/20/95 AcTh228 2.61E+02 5.23E+01 2.10E+02 *

- SE3 07 26634 11/20/95 Ag-110M -6.06E+00 1.66E+01 6.43E+01 SE3 07 26634 11/20/95 Ba-140 4.44E+01 5.54E+01 2.02E+02 SE3 07 26634 11/20/95 Be-7 0.52E+00 1.27E+02 4.62E+02 SE3 07 26634 11/20/95 Co-141 6.13E+01 2.74E+01 8.40E+01 1 SE3 07 26634 11/20/95 Co-144 -6.85E+01 6.49E+01 2.24E+02 SE3 07 26634 11/20/95 Co-57 -4.13E+00 8.19E+00 2.77E+01 SE3 07 26634 11/20/95 Co-58 -1.70E+01 1.35E+01 5.42E+01 SE3 07 26634 11/20/95 Co-60 -1.31E+01 1.46E+01 6.13E+01 SE3 07 26634 11/20/95 Cr-51 3.50E+02 1.84E+02 5.94E+02 SE3 07 26634 11/20/95 Cs-134 -2.58E+01 2.49E+01 8.19E+01 SE3 07 26634 11/20/95 Cs-137 0.89E+00 1.48E+01 5.52E+01 j SE3 07 26634 11/20/95 Fe-59 5.17E+01 6.46E+01 2.32E+02 l SE3- 07 26634 11/20/95 I-131 1.04E+02 1.42E+02 4.89E+02 SE3 07 26634 11/20/95 K-40 1.52E+04 6.76E+02 5.75E+02

SE3 07 26634 11/20/95 Mn-54 -1.44E+01 1.20E+01 4.71E+01 SE3 07 26634 11/20/95 Ru-103 -1.12E+01 1.58E+01 6.06E+01 SE3 07 26634 11/20/95 Ru-106 -2.97E+01 1.14E+02 4.39E+02 SE3 07 26634 11/20/95 Sb-124 -3.00E+01 3.00E+01 1.41E+02 SE3 07 26634 11/20/95 Se-75 1.01E+01 1.40E+01 4.60E+01 l SE3 07 26634 11/20/95 En-65 -7.73E+01 4.03E+01 1.62E+02 SE3 07 26634 11/20/95 Er-95 1.18E+01 2.66E+01 9.32E+01 SE3 08 23531 05/22/95 AcTh228 1.88E+02 7.60E+01 2.15E+02 SE3 08 23531. 05/22/95 Ag-110M 9.05E+00 1.69E+01 5.98E+01 SE3 08 23531 05/22/95 Ba-140 -9.97E+01 5.64E+01 2.64E+02 SE3 08 23531 05/22/95 Be-7 6.61E+01 1.05E+02 3.67E+02

. SE3 08 23531 05/22/95 Co-141 -4.86E+01 2.33E+01 8.19E+01 SE3 08 23531 05/22/95 Co-144 -2.24E+00 5.51E+01 1.82E+02 SE3 08 23531 05/22/95 Co-57 -7.37E+00 6.37E+00 2.18E+01 SE3 08 23531 05/22/95 Co-58 -4.85E+00 1.28E+01 4.70E+01 .

SE3 08 23531 05/22/95 Co-60 -1.23E+01 1.10E+01 4.72E+01 SE3 08 23531 05/22/95 Cr-51 3.61E+02 1.68E+02 5.38E+02 SE3 08 23531 05/22/95 Cs-134 7.90E+00 1.10E+01 3.92E+01 SE3 08 23531 05/22/95 Cs-137 1.36E+00 1.19E+01 4.40E+01 SE3 08 23531 05/22/95 Fe-59 9.94E+00 5.56E+01 2.08E+02 SE3 08 23531 05/22/95 I-131 1.26E+02 1.51E+02 5.16E+02 i SE3 08 23531 05/22/95 K-40 1.60E+04 6.07E+02 4.91E+02

SE3 08 23531 05/22/95 Mn-54 9.41E+00 1.09E+01 3.67E+01 SE3 08 23531 05/22/95 Ru-103 1.64E+01 1.43E+01 4.82E+01

? SE3 08 23531 05/22/95 Ru-106 -2.69E+02 1.84E+02 6.20E+02

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

t-f

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE. (pCi/kg) (pci/kg) (pCi/kg)

SE3 08 23531 05/22/95 Sb-124 -3.86E-06 2.29E+01 9.72E+01 SE3 08 23531 05/22/95 Se-75 1.05E+00 1.15E+01 3.89E+01 SE3 08 23531 05/22/95 Zn-65 2.80E+01 3.22E+01 1.11E+02 SE3 08 23531 05/22/95 Zr-95 -1.57E+01 2.47E+01 9.10E+01 SE3 08 26637 11/20/95 AcTh228 2.64E+02 6.43E+01 2.27E+02

SE3 08 26637 11/20/95 Ag-110M 1.94E+01 2.21E+01 7.63E+01 SE3 08 26637 11/20/95 Ba-140 3.02E+00 6.72E+01 2.61E+02 SE3 08 26637 11/20/95 Be-7 1.11E+02 1.30E+02 4.47E+02 SE3 08 26637 11/20/95 Co-141 3.42E+01 2.87E+01 9.14E+01 SE3 08 26637 11/20/95 Co-144 -1.36E+01 6.80E+01 2.27E+02 SE3 08 26637 11/20/95 Co-57 0.00E+00 9.21E+00 3.04E+01 SE3 08 26637 11/20/95 Co-58 2.34E+01 1.66E+01 5.35E+01 SE3 08 26637 11/20/95 Co-60 0.35E+00 1.67E+01 6.40E+01 SE3 08 26637 11/20/95 Cr-51 -5.16E+01 1.91E+02 6.81E+02 SE3 08 26637 11/20/95 Cs-134 -4.57E+01 3.29E+01 1.28E+02 SE3 08 26637 11/20/95 Cs-137 -1.13E+01 1.47E+01 5.71E+01 SE3 08 26637 11/20/95 Fe-59 -7.43E+01 7.64E+01 3.01E+02 SE3 08 26637 11/20/95 I-131 0.00E+00 1.50E+02 5.33E+02 SE3 08 26637 11/20/95 K-40 2.28E+04 8.17E+02 6.66E+02

SE3 08 26637 11/20/95 Mn-54 8.04E+00 1.49E+01 5.09E+01 SE3 08 26637 11/20/95 Ru-103 -1.77E+01 1.90E+01 7.19E+01 SE3 08 26637 11/20/95 Ru-106 8.61E+01 1.16E+02 4.18E+02 SE3 08 266?i7 11/20/95 Sb-124 -1.18E+01 2.24E+01 1.08E+02 SE3 08 26637 11/20/95 So-75 -1.60E+01 1.41E+01 5.04E+01 SE3 08 26637 11/20/95 Zn-65 -1.01E+01 4.29E+01 1.57E+02 ,

SE3 08 26637 11/20/95 Zr-95 2.99E+01 2.91E+01 9.67E+01 !

l SE3 52 23525 05/23/95 AcTh228 7.40E+02 6.51E+01 2.27E+02 * )

SE3 52 23525 05/23/95 Ag-110M -1.36E+01 2.02E+01 7.67E+01 (

SE3 52 23525 05/23/95 Ba-140 9.51E+01 8.08E+01 2.76E+02 l SE3 52 23525 05/23/95 Be-7 -1.53E+01 1.49E+02 5.36E&O2 SE3 52 23525 05/23/95 Co-141 3.30E+00 3.50E+01 1.14E+02 SE3 52 23525 05/23/95 Co-144 -1.65E+02 8.33E+01 2.86E+02 SE3 52 23525 05/23/95 Co-57 9.44E+00 1.04E+01 3.34E+01 SE3 52 23525 05/23/95 Co-58 1.73E+00 1.63E+01 5.77E+01 SE3 52 23525 05/23/95 Co-60 -1.01E+01 1.48E+01 6.03E+01 SE3 52 23525 05/23/95 Cr-51 1.87E+02 2.25E+02 7.63E+02 SE3 52 23525 05/23/95 Cs-134 5.72E+00 1.35E+01 4.91E+01 SE3 52 23525 05/23/95 Cs-137 3.93E+01 1.78E+01 5.88E+01 SE3 52 23525 05/23/95 Fe-59 5.29E+01 5.63E+01 2.01E+02 SE3 52 23525 05/23/95 I-131 3.13E+02 1.91E+02 6.28E+02 SE3 52 23525 05/23/95 K-40 1.30E+04 6.13E+02 6.93E+02

SE3 52 23525 05/23/95 Mn-54 2.07E+00 1.37E+01 4.81E+01 SE3 52 23525 05/23/95 Ru-103 -2.16E+00 2.08E+01 7.47E+01 SE3 52 23525 05/23/95 Ru-106 1.05E+02 1.29E+02 4.58E+02 SE3 52 23525 05/23/95 Sb-124 9.46E+00 2.84E+01 1.14E+02 SE3 52 23525 05/23/95 Se-75 -2.30E+01 1.67E+01 5.86E+01 SE3 52 23525 05/23/95 Zn-65 -0.35E+00 7.96E+01 3.02E+02 SE3 52 23525 05/23/95 Zr-95 3.57E+01 2.97E+01 9.72E+01 SE3 52 26849 12/05/95 AcTh228 9.32E+02 6.72E+01 2.58E+02

SE3 52 26849 12/05/95 Ag-110M 7.81E+00 2.30E+01 8.20E+01 SE3 52 25a49 32/05/95 Ba-140 5.97E+01 5.46E+01 1.88E+02 SE3 52 26845 12/05/95 Be-7 -1.97E+02 1.41E+02 5.39E+02

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

.............................................................................. l SE3 52 26849 12/05/95 Co-141 2.86E+01 3.18E+01 1.02E+02 )

SE3 52 26849 12/05/95 Co-144 -1.59E+02 9.61E+01 3.26E+02 l SE3 52 26849 12/05/95 Co-57 -0.20E+00 1.12E+01 3.67E+01 1 SE3 52 26849 12/05/95 Co-58 -0.59E+00 1.65E+01 5.88E+01 l SE3 52 26849 12/05/95 Co-60 -1.05E+01 1.82E+01 7.23E+01' '

SE3 52 26849 12/05/95 Cr-51 -1.93E+02 3.82E+02 6.63E+02 SE3 52 26849 12/05/95 Co-134 -1.50E+01 1.51E+01- 5.88E+01' SE3 52 26849 12/05/95 Cs-137 -2.88E+00 1.49E+01 .5.66E+01 SE3 52 26849 12/05/95 Fe-59 2.45E+01 5.986:01 2.21E+02 SE3 52 26849 12/05/95 I-131 -6.17E+01 8.23E+01 3.01E+02 SE3 52 26849 12/05/95- K-40 1.16E+04 6.12E+02 6.67E+02

SE3 52 26849 12/05/95 Mn-54 -1.09E+01 1.32E+01 5.01E+01 SE3 52 26849 12/05/95 Ru-103 2.24E+01 i.85E+01 6.23E+01 SE3 52 26849 12/05/95 Ru-106, 1.43E+02 1.46E+02 5.15E+02

'8E3 52 26849 12/05/95 Sb-124 -2.99E+01 3.17E+01 1.44E+02 SE3 -52 26849 12/05/95 So-75 6.18E+00 1.71E+01 5.67E+01 SE3 52 26849 12/05/95 En-65 -3.14E+01 3.78E+01 1.46E+02 SE3 52 26849 12/05/95 Er-95 5.14E+01 3.16E+01 1.00E+02 SE3 57 23534 05/22/95 AcTh228 3.58E+02 6.25E+01 1.88E+02

SE3- 57 23534 05/22/95 Ag-110M 2.46E+00 1.68E+01 6.15E+01 SE3 57 23534 05/22/95 Ba-140 9.52E+01 4.18E+01 9.89E+01 :

SE3 57 23534 05/22/95 Be-7 2.06E+01 1.21E+02 4.31E+02 '

SE3 57 23534 05/22/95 Co-141 -1.66E+00 2.60E+01 8.63E+01 !

SE3 57 23534 05/22/95 Co-144 -2.77E+01 6.20E+01 2.08E+02 .

SE3 57 23534 05/22/95 Co-57 7.08E+00 7.90E+00 2.54E+01 I SE3 57 23534 05/22/95 Co-58 -4.72E+00 1.44E+01 5.24E+01 !

SE3 57 23534 05/22/95 Co-60 -2.66E+00 1.49E+01 5.74E+01 SE3 57 23534 05/22/95 Cr-51 -9.12E+01 1.69E+02 6.13E+02 SE3 57 23534 05/22/95 Cs-134 3.36E+00 1.13E+01 4.16E+01 ,

SE3 57 23534 05/22/95 Cs-137 1.66E+01 1.36E+01 4.73E+01 SE3 57 23534 05/22/95 Fe-59 -3.85E+01 5.64E+01 2.25E+02

, SE3 57 23534 05/22/95 I-131 -3.24E+01 1.57E+02 5.66E+02 l

[ SE3 57 23534 05/22/95 K-40 1.42E+04 5.90E+02 4.26E+02 *

!~ SE3 57 23534 05/22/95 Mn-54 -9.54E+00 1.22E+01 4.53E+01 SE3 57 23534 05/22/95 Ru-103 -3.39E+00 1.50E+01 5.55E+01 SE3 57 23534 05/22/95 Ru-106 9.50E+01 1.03E+02 3.65E+02 i SE3 57 23534 05/22/95 Sb-124 -8.62E+00 2.86E+01 1.22E+02 SE3 57 23534 05/22/95 Se-75 -1.27E+00 1.24E+01 4.23E+01 1 SE3 57 23534 05/22/95 En-65 4.32E+00 3.09E+01 1.12E+02

! SE3 57 23514 05/22/95 Er-95 0.92E+00 2.75E+01 9.71E+01 SE3 57 26640 11/20/95 AcTh228 3.41E+02 5.51E+01 1.59E+02

SE3 57 26640 11/20/95 Ag-110M -1.98E+01 1.88E+01 7.45E+01

, SE3 57 26640 11/20/95 Ba-140 -7.55E+01 5.45E+01 2.52E+02 i

. SE3 57 26640 11/20/95 Be-7 -2.22E+02 1.17E+02 4.73E+02 SE3 57 26640 11/20/95 Co-141 2.05E+01 2.57E+01 8.32E+01 )

i SE3 57 26640 11/20/95 Co-144 -7.16E+01 6.63E+01 2.28E+02 l SE3 57 26640 11/20/95 Co-57 1.17E+01 7.63E+00 2.41E+01 '

SE3 57 26640 '11/20/95 Co-58 -1.20E+00 1.37E+01 5.02E+01 SE3 57 26640 11/20/95 Co-60 -9.74E+00 1.40E+01 5.80E+01 SE3 57 26640 11/20/95 Cr-51 -4.30E+02 1.64E+02 6.56E+02 SE3 57 26640 11/20/95 Cs-134 -2.87E+01 2.97E+01 1.10E+02 l SE3 57 26640 11/20/95 Co-137 1.72E+01 1.14E+01 3.90E+01 j SE3 57 26640 11/20/95 Fe-59 -4.95E+00 5.26E+01 2.07E402

)

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

I i

1

.~. . . . - . __ - . . - . - . - - - . - - - .

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DUV. MDC TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (p01/kg) (pC1/kg)

SE3 57 26640 11/20/95 I-131 -1.62E+02 1.05E+02 4.21E+02 SE3 57 .26640 11/20/95 K-40 1.25E+04 6.10E+02 5.71E+02

l SE3 57 26640 11/20/95 Mn-54 5.36E+00 1.22E+01 4.25E+01 l SE3 57 26640 11/20/95 Ru-103 0.00E+00 1.40E+01 5.20E+01 1 SE3 57 26640 11/20/95 Ru-106 7.38E+01 1.13E+02 4.09E+02 1 SE3 57 26640 11/20/95 Sb-124 -3.93E+01 2.78E+01 1.38E+02 LE3 57 26640 11/20/95 Se-75 -2.58E+01 1.29E+01 4.83E+01 f,E 3 57 26640 11/20/95 En-65 -2.64E+00 3.45E+01 1.28E+02 SE3 57 26640 11/20/95 Er-95 -7.8C2+^^ 2.62E+01 9.67E+01 l

i

~

1 I

i i

l i

i l

l 4

1 i

i i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1 k

i

)

I

. Seabrook Station Radiological Environmental Data i (January - December 1995) l SAMPLE CONC. STD DEV. MDC 5

TYPE STA. .LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) 1 Food Crop i

j TF 01 24226 06/29/95 AcTh228 9.86E+00 3.42E+01 1.23E+02 !

t TF 01 24226 06/29/95 Ag-110M 1.90E+00 9.85E+00 3.69E+01 TF 01 24226. 06/29/95 Ba-140 -3.10E+01 1.48E+01 7.15E+01 l 5.66E+01 2.18E+02 4 TF 01 24226 06/29/95 Be-7 -3.49E+01 TF 01 24226 06/29/95 Co-141 9.275+00 1.01E+01 3.29E+01 1 TF 01 24226 06/29/95 Co-144 -3.56E+01 3.39E+01 1.19E+02 TF 01 24226 06/29/95 Co-57 1.62E+00 4.05E+00 1.35E+01 ,

! TF 01 24226 06/29/95 Co-58 1.75E+01 7.93E+00 2.35E+01 i TF 01 24226 06/29/95 Co-60 2.16E+00 8.10E+00 3.18E+01 j TF 01 24226 06/29/95 Cr-51 3.05E+01 7.63E+01 2.67E+02 ;

3.04E+01 8.35E+00

TF 01 24226 06/29/95 Cs-134 4.67E+00 l- TF 01 24226 06/29/95 Cs-137 1.19E+01 7.29E+00 2.45E+01 TF 01 24226 06/29/95 Fe-59 2.28E+01 2.10E+01 7.50E+01

TF 01 24226 06/29/95 I-131 -2.84E+01 1.87E+01 7.27E+01

TF 01 24226 06/29/95 K-40 1.34E+03 2.05E+02 4.71E+02

J i TF 01 24226 06/29/95 Mn-54 -7.41E+00 6.33E+00 2.59E+01 l l TF 01 24226 06/29/95 Ru-103 -1.12E+00 6.43E+00 2.45E+01

! TF 01 24226 06/29/9E Ru-106 3.64E+01 6.55E+01 2.41E+02 '

TF 01 24226 06/29/95 Sb-124 -1.11E+01 1.57E+01 7.27E+01

! TF 01 24226 06/29/95 Se-75 8.19E+00 7.13E+00 2.31E+01 l TF 01 24226 06/29/95 En-65 3.33E+00 1.60E+01 6.04E+01

, J

TF 01 24226 06/29/95 Er-95 -3.89E+00 1.30E+01 4.90E+01 ,

i TF 02 24227 06/29/95 AcTh228 4.84E+01 4.21E+01 1.43E+02 TF 02 24227 06/29/95 Ag-110M 5.34E+00 1.19E+01 4.45E+01 i . TF 02 24227 06/29/95 Ba-140 2.60E+01 2.15E+01 7.50E+01 l l TF 02 24227 06/29/95 Be-7 5.53E+01 8.54E+01 3.12E+02 TF 02 24227 06/29/95 Co-141 -2.74E+00 1.68E+01 5.93E+01 i TF 02 24227 06/29/95 Co-144 0.00E+00 6.38E+01 2.23E+02 TF 02 24227 06/29/95 Co-57 2.53E+00 7.22E+00 2.51E+01

TF 02 24227 06/29/95 Co-58 -1.44E+00 9.01E+00 3.55E+01 )

! TF 02 24227 06/29/95 Co-60 -2.10E+01 1.18E+01 5.29E+01 '

s TF 02 24227 06/29/95 Cr-51 7.86E+01 9.372+01 3.21E+02 TF 02 24227 06/29/95 Co-134 9.77E+00 9.4JE+00 3.16E+01

TF 02 24227 06/29/95 Cs-137 1.24E+01 1.03E+01 3.38E+01 J TF 02 24227 06/29/95 Fe-59 1.00E+01 3.61E+01 1.32E+02 I

TF 02 24227 06/29/95 I-131 -2.94E+01 2.47X+01 9.63E+01 l

TF 02 24227 06/29/95 K-40 1.19E+03 '2. 39Ev02 6.19E+02

3 TF 02 24227 06/29/95 Mn-54 6.42E+00 9.80E+00 3.52E+01 i

TF 02 24227 06/29/95 Ru-103 2.43E+01 1.30E+01 4.31E+01 (

j TF 02 24227 06/29/95 Ru-106 -1.19E+02 9.15E+01 3.59E+02 l 4

TF 02 24227 06/29/95 Sb-124 4.30E+01 2.17E+01 6.12E+01 l

! TF 02 24227 06/29/95 Se-75 2.54E+00 1.09E+01 3.89E+01 l TF 02 24227 06/29/95 En-65 -1.96E+01 2.05E+01 8.89E+01 l TF 02 24227 06/29/95 Er-95 1.70E+01 1.70E+01 5.94E+01

! TF 02 24472 07/13/95 AcTh228 2.58E+01 1.74E+01 5.49E+01 l TF 02 24472 07/13/95 Ag-110M 3.81E+00 5.17E+00 1.76E+01

+

TF. 02 24472 07/13/95 Ba-140 1.33E+00 5.79E+00 2.02E+01 TF 02 24472 07/13/95 Be-7 -3.03E+01 3.49E+01 1.27E+02 TF' 02 24472 07/13/95 Co-141 1.45E+01 5.30E+00 1.63E+01

_ TF 02 24472 07/13/95 Co-144 -0.45E+00 1.89E+01 6.12E+01 i TF 02 24472 07/13/95 Co-57 -0.77E+00 2.23E+00 7.25E+00 l

4

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). l 1

I l

I

-- - - - . .- - - - . .- _ . - . - - ~ . . - . .. <. - - - - -. .

l N

i Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC '

~

TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (pci/kg) (pCi/kg)

TF 02 24472 07/13/95 Co-58 -1.29E+00 3.36E+00 1.16E+01 f 1.45E+C1

TF 02 24472 07/13/95 Co-60 4.64E+00 4.18E+00 i

TF 02 24472 07/13/95 Cr-51 -5.07E+01 3.69E+01 1.29E+02 1 .TF 02 24472 07/13/95 Cs-134 -0.37E+00 4.51E+00 1.60E+01 TF 02 24472 07/13/95 Cs-137 2.44E+00 3.68E+00 1.21E+01 TF 02 24472 07/13/95 Fe-59 1.14E+01 1.16E+01 4.02E+01 TF 02 24472 07/13/95 I-131 1.22E+00 8.00E+00 2.73E+01 TF 02 24472 07/13/95 K-40 2.14E+03 1.05E+02 1.96E+02

TF 02 24472 07/13/95 Mn-54 -3.67E+00 3.73E+00 1.34E+01

< TF 02 24472 07/13/95 Ru-103 -6.03E+00 4.42E+00 1.62E+01 TF 02 24472 07/13/95 Ru-106 2.53E+01 3.74E+01 1.31E+02

TF 02 24472 07/13/95 Sb-124 -5.95E+00 7.44E+00 2.80E+01 TF 02 '24472 07/13/95 Se-75 -7.37E+00 4.59E+00 1.61E+01

'TF 02 24472 07/13/95 En-65 -1.12E+01 8.34E+00 3.06E+01 l

TF 02 24472 07/13/95 Er-95 1.26E+00 6.47E+00 2.17E+01 j

TF 02 25243 09/01/95 AcTh228 1.78E+01 2.52E+01 8.91E+01 l 1.02E+01 3.23E+01 TF 02 25243 09/01/95 Ag-110M 2.03E+01

< TF 02 25243 09/01/95 Ba-140 2.85E+00 9.32E+00 3.50E+01 TF 02 25243 09/01/95 Be-7 -1.66E+02 7.15E+01 2.91E+02 i

i TF 02 25243 09/01/95 Co-141 0.72E+00 9.59E+00 3.20E+01

) TF 02 25243 09/01/95 Co-144 1.41E+00 3.68E+01 1.23E+02

TF 02 25243 09/01/95 Co-57 -2.05E+00 4.70E+00 1.59E+01 i TF 02 25243 09/01/95 Co-58 -1.09E+01 6.67E+00 2.70E+01 TF 02 25243 09/01/95 Co-60 1.01E+01 9.71E+00 3.42E+01

'.j TF 02 25243 09/01/95 Cr-51 -4.19E+01 6.67E+01 2.42E+02 j TF 02 25243 09/01/95 Co-134 7.11E+00 8.25E+00 2.93E+01

TF 02 25243 09/01/95 Co-137 -3.17E+00 7.44E+00 2.72E+01

TF 02 25243 09/01/95 Fe-59 2.80E+01 1.92E+01 6.51E+01 l TF 02 25243 09/01/95 I-131 0.00E+00 1.15E+01 4.11E+01 TF 02 25243 09/01/95 K-40 2.69E+03 2.38E+02 4.43E+02

l Mn-54 8.81E+00 7.94E+00 2.70E+01

TF 02 25243 09/01/95 3.36E+01 l TF 02 25243 09/01/95 Ru-103 -6.13E+00 8.82E+00 TF 02 25243 09/01/95 Ru-106 3.24E+01 7.37E+01 2.69E+02

TF 02 25243 09/01/95 sb-124 -8.83E+00 1.53E+01 6.42E+01 TF 02 25243 09/01/95 So-75 1.52E+01 9.50E+00 3.12E+01

TF 02 25243 09/01/95 En-65 -4.74E+00 1.73E+01 6.57E+01

! TF 02 25243 09/01/95 Er-95 2.91E+00 1.14E+01 4.06E+01

! TF 03 24228 06/29/95 AcTh228 8.54E+00 3.05E+01 1.10E+02

TF 03 24228 06/29/95 Ag-110M -1.53E+00 8.08E+00 3.18E+01 TF 03 .24228 06/29/95 Ba-140 -0.43E+00 1.67E+01 6.52E+01 1 TF 03 24228 06/29/95 Be-7 -5.19E+01 5.63E+01 2.25E+02

+

TF 03 24228 06/29/95 Co-141 -4.01E+00 1.02E+01 3.50E+01

. TF 03 24228 06/29/95 Co-144 5.48E+01 3.49E+01 1.10E+02 l TF 03 24228 06/29/95 Co-57 -3.19E+00 4.21E+00 1.47E+01

. TF 03 24228 06/29/95 Co-58 1.51E+00 7.60E+00 2.77E+01 TF 03 24228 06/29/95 Co-60 -1.13E+01 8.09E+00 3.65E+01 TF 03 24228 06/29/95 Cr-51 2.48E+01 7.16E+01 2.53E+02 TF 03 24228 06/29/95 Cs-134 0.00E+00 7.95E+00 2.93E+01 TF 03 24228 06/29/95 Cs-137 -1.82E+00 8.11E+00 3.17t+01 TF 03 24228 06/29/95 Fe-59 -2.28E+01 2.63E+01 1.09E+02 TF 03 24228 06/29/95 I-131 -2.48E+01 2.09E+01 7.97E+01 TF 03 24228 06/29/95 K-40 9.14E+02 1.89E+02 4.92E+02

TF 03 24228 06/29/95 Mn-54 1.77E+01 8.16E+00 2.43E+01 i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4 l

4 1

4 seabrook station Radiological Environmental Data

(January - December 1995) 4 SAMPLE CONC. STD DEV. MDC l TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (pCi/kg) (pC1/kg) j 1 l TF 03 24228 06/29/95 Ru-103 -1.21E+00 8.15E+00 3.04E+01 j TF 03 24228 06/29/95 Ru-106 -4.96E+01 6.37E+01 2.61E+02 !

s TF 03 24228 06/29/95 Sb-124 -4.74E+00 9.59E+00 5.11E+01 l TF 03 24228 06/29/95 So-75 -1.68E+00 7.82E+00 2.73E+01 TF 03 24228 06/29/95 En-65 -3.93E+01 1.64E+01 7.62E+01 l TF 03 24228 06/29/95 Er-95 -7.33E+00 1.29E+01 5.36E+01 l

TF 03 24473 07/13/95 AcTh228 6.73E+00 1.75E+01 6.13E+01 TF 03 24473 07/13/95 Ag-110M -3.43E+00 5.46E+00 1.96E+01 TF 03 24473 07/13/95 Ba-140 -7.53E+00 6.83E+00 2.62E+01 TF 03 24473 07/13/95 Be-7 0.00E+00 2.90E+01 1.01E+02 TF 03 24473 07/13/95 Co-141 3.50E+00 4.40E+00 1.41E+01 5.16E+01

TF 03 24473 07/13/95 Co-144 -0.75E+00 1.59E+01 TF 03 24473 07/13/95 Co-57 -0.32E+00 1.93E+00 6.30E+00

-TF 03 24473 07/13/95 Co-58 3.88E+00 3.29E+00 1.07E+01 ;

4 TF 03 24473 07/13/95 Co-60 6.50E+00 4.21E+00 1.42E+01 TF 03 24473 07/13/95 Cr-51 -4.39E+01 3.17E+01 1.12E+02 l TF 03 24473 07/13/95 Co-134 3.79E+00 3.93E+00 1.37E+01 i l

TF 03 24473 07/13/95 Cs-137 0.27M+00 3.55E+00 1.28E+01 i TF 03 24473 07/13/95 Fe-59 -8.98E+00 1.16E+01 4.40E+01 l TF 03 24473 07/13/95 I-131 8.03E+00 7.66E+00 2.56E+01 TF 03 24473 07/13/95 K-40 2.23E+03 1.18E+02 2.22E+02

TF 03 24473 07/13/95 Mn-54 -3.82E+00 3.37E+00 1.20E+01 i TF 03 24473 07/13/95 Ru-103 -6.60E+00 3.60E+00 1.32E+01 TF 03 24473 07/13/95 Ru-106 -1.42E+01 3.43E+01 1.25E+02 8.71E+00 2.97E+01

! TF 03 24473 07/13/95 sb-124 9.37E+00

, TF 03 24473 07/13/95 Se-75 -2.94E+00 3.44E+00 1.16E+01

TF 03 24473 07/13/95 En-65 -1.36E+01 8.01E+00 3.04E+01 TF 03 24473 07/13/95 Er-95 0.40E+00 5.73E+00 1.96E+01 f

i TF 03 25244 09/01/95 AcTh228 -4.21E+01 2.92E+01 1.19E+02 TF 03 25244 09/01/95 Ag-110M -8.85E+00 1.21E+01 4.68E+01 l

i TF 03 25244 09/01/95 Ba-140 -2.73E+00 1.06E+01 4.34E+01

TF 03 25244 09/01/95 Be-7 9.07E+01 5.45E+01 1.78E+02 TF 03 25244 09/01/95 Co-141 4.01E+00 8.16E+00 2.70E+01 l

TF 03 25244 09/01/95 Co-144 -1.02E+01 3.09E+01 1.05E+02 e TF 03 25244 09/01/95 Co-57 1.37E+00 3.93E+00 1.30E+01 4 TF 03 25244 09/01/95 Co-58 1.17E+01 7.95E+00 2.55E+01 TF 03 25244 09/01/95 Co-60 -1.42E+00 9.02E+00 3.60E+01 TF 03 25244 09/01/95 Cr-51 -3.32E+00 4.96E+01 1.80E+02

^

TF 03 25244 09/01/95 Cs-134 -5.82E+00 8.29E+00 3.23E+01

} TF 03 25244 09/01/95 Cs-137 -3.85E+00 8.21E+00 3.20E+01 TF 03 25244 09/01/95 Fe-59 -2.55E+01 2.28E+01 9.77E+01 TF 03 25244 09/01/95 I-131 6.00E+00 9.98E+00 3.49E+01 TF 03 25244 09/01/95 K-40 2.01E+03 2.34E+02 4.89E+02

i TF 03 25244 09/01/95 Mn-54 -3.95E+00 4.86E+00 2.02E+01 TF 03 35244 09/01/95 Ru-103 4.72E+00 5.74E+00 2.01E+01 TF 03 *21244 09/01/95 Ru-106 -6.17E+00 6.15E+01 2.37E+02 TF 03 25144 09/01/95 sb-124 -2.98E+01 1.99E+01 9.00E+01 TF 03 25144 09/01/95 Se-75 -3.28E+00 7.31E+00 2.55E+01 TF 03 25244 09/01/95 En-65 -2.22E+01 1.50E+01 6.49E+01 TF 03 25244 09/01/95 Er-95 -1.41E+01 1.05E+01 4.34E+01

~

TF 06 24229 06/29/95 AcTh228 3.15E+01 3.39E+01 1.17E+02 TF 06 24229 06/29/95 Ag-110M -1.41E+01 8.88E+00 3.82E+01 i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

a e

l Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

'TF 06 24229 06/29/95 Ba-140 -7.56E+00 1.31E+01 5.50E+01 TF 06 24229 06/29/95 .Be-7 -9.12E+01 7.42E+01 2.93E+02 TF 06 24229 06/29/95 Co-141 2.24E+00 1.04E+01 3.48E+01 j TF 06 24229 06/29/95 Co-144 1.53E+00 3.66E+01 1.23E+02 )

TF 06 24229 06/29/95 Co-57 -3.09E+00 4.44E+00 1.54E+01 TF 06 24229' 06/29/95 Co-58 2.27E+00 6.44E+00 2.32E+01

'TF 06 24229 06/29/95 Co-60 1.06E+01 7.72E+00 2.64E+01 TF 06 24229 06/29/95 Cr-51 -2.64E+01 7.60E+01 2.75E+02 TF 06 24229 06/29/95 Cs-134 -3.40E+00 1.60E+01 5.01E+01 TF 06 24229 06/29/95 -Cs-137 -8.73E+00 6.50E+00 2.60E+01 TF 06 24229 06/29/95 Fe-59 -1.75E+00 2.38E+01 9.38E+01 TF 06 24229 06/29/95 I-131 -1.81E+01 1.97E+01 7.42E+01 TF 06 24229 06/29/95 K-40 1.20E+03 1.87E+02 4.53E+02

TF 06 24229 06/29/95 Mn-54 8.27E+00 7.47E+00 2.55E+01 TF 06 24229 06/29/95- Ru-103 ~7.57E+00 8.97E+00 3.51E+01

'TF 06 24229 06/29/95 Ru-106 -7.67E+01 7.37E+01 2.94E+02 TF 06 24229 06/29/95 sb-124 -0.49E+00 1.90E+01 7.42E+01 TF 06 24229 06/29/95 Se-75 -5.07E+00 8.62E+00 3.15E+01 TF 06 24229 06/29/95 En-65 -3.30E+01 1.37E+01 6.39E+01 TF 06 24229 06/29/95 Er-95 3.26E+01 1.37E+01 4.02E+01 l TF 06 24474 07/13/95 AcTh228 -1.69E+01 1.96E+01 7.03E+01 .

TF 06 24474 07/13/95 Ag-110M 2.16E+00 6.56E+00 2.27E+01 l TF 06 24474 07/13/95 Ba-140 1.57E+00 7.65E+00 2.76E+01 TF 06 24474 07/13/95 Be-7 -2.44E+00 3.89E+01 1.35E+02

- TF 06 24474 07/13/95 Co-141 1.47E+01 5.98E+00 1.85E+01 1 TF 06 24474 07/13/95 Co-144 6.83E+00 2.07E+01 6.675+01

TF 06 24474 07/13/95 Co-57 1.33E+00 2.61E+00 8.40E+00

< TF 06 24474 07/13/95 Co-58 2.11E+00 4.45E+00 1.49E+01 TF 06 24474 07/13/95 co-60 4.65E+00 5.78E+00 2.03E+01 1 TF 06 24474 07/13/95 Cr-51 -6.89E+01 4.35E+01 1.54E+02

TF 06 24474 07/13/95 Co-134 -1.45E+01 5.21E+00 2.00E+01 i TF 06 24474 07/13/95 Co-137 -2.08E+00 4.975+00 1.81E+01 TF 06 24474 07/13/95 Fe-59 -2.30E+00 1.49E+01 5.48E+01 l

4 TF 06 24474 07/13/95 I-131 0.54E+00 1.01E+01 3.46E+01 l TF 06 24474 07/13/95 K-40 2.16E+03 1.37E+02 2.89E+02 *

< TF 06 24474 07/13/95 Mn-54 -1.25E+00 4.10E+00 1.42E+01 i

, TF 06 24474 07/13/95 Ru-103 -7.14E+00 4.72E+00 1.71E+01 l TF 06 24474 07/13/95 Ru-106 -1.06E+02 4.41E+01 1.70E+02 l 4 TF 06 24474 07/13/95 sb-124 -2.79E+01 1.01E+01 4.38E+01

, TF 06 24474 07/13/95 Se-75 3.44E+00 4.47E+00 1.44E+01 TF 06 24474 07/13/95 En-65 1.15E+01 1.01E+01 3.40E+01 i TF 06 24474 07/13/95 Er-95 -0.42E+00 7.43E+00 2.55E+01 TF 06 25245 09/01/95 AcTh228 -2.87E+01 3.23E+01 1.26E+02 l TF 06 25245 09/01/95 Ag-110M -2.61E+00 1.13E+01 4.28E+01

[ TF 06 25245 09/01/95 Ba-140 1.11E+01 1.25E+01 4.42E+01

- TF 06 25245 09/01/95 Be-7 -3.97E+01 5.56E+01 2.14E+02 ,

TF 06 25245 09/01/95 Co-141 -2.50E+00 8.88E+00 3.02E+01 l TF 06 25245 09/01/95 Co-144 -2.93E+01 3.53E+01 1.23E+02 .

> TF 06 25245 09/01/95 Co-57 5.58E+00 4.55E+00 1.45E+01 !

TF 06 25245 09/01/95 Co-58 7.69E+00 7.17E+00 2.40E+01 l 3.48E+01 TF 06 25245 09/01/95 Co-60 -0.24E+00 8.75E+00 i 2.14E+02 TF 06 25245 09/01/95 Cr-51 -3.22E+01 5.79E+01 TF 06 25245 09/01/95 C9-134 -1.82E+00 9.09E+00 3.43E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). l I

d 1

Seabrook Station Radiological Environmental Data l (January - December 1995) l SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) )

TF 06 25245 09/01/95 Cs-137 -4.59E+00 7.49E+00 3.01E+01 ;

TF 06 25245 09/01/95 Fe-59 1.81E+01 2.35E+01 8.59E+01 i TF 06 25245 09/01/95 I-131 1.75E+01 1.12E+01 3.68E+01 TF 06 25245 09/01/95 K-40 2.09E+03 2.40E+02 4.87E+02

TF 06 25245 09/01/95 Mn-54 1.20E+00 6.62E+00 2.41E+01 TF 06 25245 09/01/95 Ru-103 6.93E+00 6.93E+00 2.38E+01 TF 06 25245 09/01/95 Ru-106 -4.74E+01 7.12E+01 2.81E+02 TF 06 25245 09/01/95 Sb-124 -2.55E+01 1.53E+01 7.65E+01 TF 06 25245 09/01/95 Se-75 -3.10E+00 7.24E+00 2.54E+01 TF 06 25245 09/01/95 Zn-65 3.24E+01 1.89E+01 6.09E+01 TF 06 25245 09/01/95 Zr-95 1.50E+01 1.24E+01 4.10E+01 i

I

+

4

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4

1 seabrook Station Radiological Environmental Data (January - December 1995) l SAMPLE CONC. STD DEV. MDC' TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pCi/kg) d i

Milk TM 04 21086 01/11/95 AcTh228 -1.60E+00 4.78E+00 1.77E+01 l 1.49E+00 4.74E+00

, TM 04 21086 01/11/95 Ag-110M -0.35E+00 TM 04 21086 01/11/95 Ba-140 -1.53E+00 1.65E+00. 5.87E+00 TM 04 21086 01/11/95 Be-7 9.37E+00 8.875+00 2.64E+01 TM 04 21086 01/11/95 Co-141 -2.29E+00 2.07E+00 7.14E+00 TM 04 21086 01/11/95 Co-144 4.85E+00 6.56E+00 1.90E+01 TM 04 21086 01/11/95 Co-57 -0.25E+00 0.84E+00 2.48E+00 s TM 04 21086 01/11/95 Co-58 0.11E+00 1.09E+00 3.40E+00 TM 04 21086 01/11/95 Co-60 0.71E+0C 1.22E+00 3.85E+00 TM 04 21086 01/11/95 Cr-51 0.46E+00 9.32E+00 2.74E+01 d

TM 04 21086 01/11/95 Cs-134 0.15E+00 1.15E+00 3.97E+00

! TM 04 -21086 01/11/95 Co-137 6.61E+00 1.36E+00 3.26E+00

i TM 04 21086 01/11/95 Fe-59 3.30E+00 2.77E+00 8.09E+00

', TM 04 21086 01/11/95 I-131 0.26E+00 0.17E+00 0.53E+00 2 TM 04 21086 01/11/95 K-40 1.37E+03 5.41E+01 8.13E+01

TM 04 21086 01/11/95 Mn-54 0.27E+00 1.14E+00 3.52E+00 3

TM 04 21086 01/11/95 .Ru-103 -0.99E+00 1.18E+00 3.84E+00 i

TM 04 21086 01/11/95 Ru-106 -5.39E+00 9.33E+00 3.01E+01 l TM 04 21086 01/11/95 Sb-124 -2.42E+00 2.42E+00 8.70E+00

TM 04 21086 01/11/95 So-75 -0.35E+00 1.31E+00 3.88E+00 TM 04 21086 01/11/95 En-65 -2.85E+00 3.17E+00 1.14E+01 )

TM 04 21086 01/11/95 Zr-95 1.33E+00 1.97E+00 5.94E+00 l l TM 04 21571 02/08/95 AcTh228 8.63E+00 3.64E+00 1.15E+01 TM 04 21571 02/08/95 Ag-110M -1.47E+00 1.53E+00 5.61E+00

TM 04 21571 ~ 02/08/95 Ba-140 1.51E+00 1.97E+00 6.92E+00 TM 04 21571 02/08/95 Be-7 -3.92E+00 8.16E+00 2.91E+01 TM 04 21571 02/08/95 Co-141 -1.03E+00 1.66E+00 5.47E+00 l TM 04 21571 02/08/95 Co-144 -7.78E+00 5.76E+00 1.92E+01 1

TM 04 21571 02/08/95 Co-57 -0.23E+00 0.73E+00 2.37E+00 TM 04 21571 02/08/95 Co-58 0.78E+00 1.05E+00 3.50E+00

TM 04 21571 02/08/95 Co-60 0.28E+00 1 15E+00 4.18E+00 TM 04 21571 02/08/95 Cr-51 2.99E+00 1.013+01 3.47E+01 TM 04 21571 02/08/95 Cs-134 -1.37E+00 1.878+00 5.85E+00 l TM 04 21571 02/08/95 Cs-137 5.62E+00 1.56L+00 5.60E+00

TM 04 21571 02/08/95 Fe-59 -8.66E+00 3.70E+00 1.49E+01 i 0.35E+00

TM 04 21571 02/08/95 I-131 -5.31E-02 6.49E-02 i TM 04 21571 02/08/95 K-40 1.37E+03 4.53E+01 5.61E+01

TM 04 21571 02/08/95 Mn-54 0.71E+00 0.89E+00 2.97E+00 l 4.28E+00

TM 04 21571 02/08/95 Ru-103 -1.18E+00 1.19E+00 j TM 04 21571 02/08/95 Ru-106 -3.30E+00 8.67E+00 3.20E+01 TM 04 21571 02/08/95 Sb-124 2.15E+00 2.24E+00 7.78E+00 TM 04 21571 02/08/95 Se-75 -0.55E+00 1.11E+00 3.72E+00 i TM 04 21571 02/08/95 En-65 0.69E+00 2.81E+00 9.77E+00 TM 04 21571 02/08/95 Zr-95 1.24E+00 1.74E+00 5.81E+00 l

TM 04 22007 03/08/95 AcTh228 -2.78E+00 3.96E+00 1.44E+01

TM 04 22007 03/08/95 Ag-110M -0.53E+00 1.36E+00 4.90E+00 TM 04 22007 03/08/95 Ba-140 -0.81E+00 1.50E+00 5.58E+00 ,

TM 04 22007 03/08/95 Be-7 -9.46E+00 9.19E+00 3.42E+01 '

TM 04 22007 03/08/95 Co-141 -1.14E+00 1.60E+00 5.29E+00 TM 04 22007 03/08/95 Co-144 5.31E+00 6.00E+00 1.92E+01 LTM 04 22007 03/08/95 Co-57 -0.27E+00 0.80E+00 2.61E+00 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

.- .- . - ~ - -.-

1 Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC j TYPE- STA. LSN END DATE NUCLIDE (pci/kg) (pCi/kg) (pCi/kg) i i TM 04 22007 03/08/95 co-58 0.61E+00 0.96E+00 3.20E+00 TM 04 22007 03/08/95 co-60 1.36E+00 0.99E+00 3.39E+00 4 TM 04 22007 03/08/95 Cr-51 -9.40E+00 9.10E+00 3.24E+01 4 _TM 04 22007 03/08/95 co-134 1.69E+00 1.85E+00 5.41E+00 TM 04 22007 03/08/95 Cs-137 5.29E+00 1.50E+00 5.00E+00

4 TM 04' 22007 03/08/95 Fe-59 3.41E+00 3.10E+00 1.07E+01 i TM 04 22007 03/08/95 I-131 0.00E+00 0.12E+00 0.54E+00 TM 04 22007 03/08/95 K-40 1.31E+03 4.46E+01 6.19E+03

TM 04 22007 03/08/95 Mn-54 -0.37E+00 0.99E+00 3.56E+00 4

TM 04 22007 03/08/95 Ru-103 0.61E+00 1.11E+00 3.92E+00 TM 04 22007 03/08/95 Ru-106 -1.12E+01 9.08E+00 3.45E+01 i TM 04 22007 03/08/95 Sb-124 1.71E+00 1.99E+00 6.84E+00 TM 04 22007 03/08/95 So-75 6.67E-02 1.20E+00 4.11E+00 TM 04 22007 03/08/95 In-65 -0.91E+00 2.50E+00 8.975+00 TM 04 22007 03/08/95 Er-95 -0.95E+00 1.67E+00 5.90E+00 q'

TM 04 22459 04/05/95 AcTh228 1.40E+01 7.23E+00 2.35E+01 TM 04 22459 04/05/95 Ag-110M 2.03E+00 2.70E+00 9.18E+00 TM 04 22459 04/05/95 Ba-140 1.49E+00 2.58E+00 8.95E+00

TM 04 22459 04/05/95 Be-7 -4.74E+00 1.56E+01 5.43E+01 TM 04 22459 04/05/95 co-141 -8.02E+00 3.22E+00 1.12E+01 TM 04 22459 04/05/95 co-144 2.18E+01 1.26E+01 4.13E+01 TM 04 22459 04/05/95 co-57 4.43E+00 1.55E+00 5.01E+00 TM 04 22459 04/05/95 Co-58 1.06E+00 2.03E+00 6.82E+00 TM 04 22459 04/05/95 co-60 -0.39E+00 2.24E+00 8.09E+00.

TM 04 22459 04/05/95 Cr-51 0.54E+00 1.60E+01 6.01F+01 TM 04 22459 04/05/95 cs-134 -3.59E+00 2.02E+00 7.39E+00 TM 04 22459 04/05/95 co-137 -1.41E+00 2.12E+00 7.62E+00

TM 04 22459 04/05/95 Fe-59 2.69E+00 6.54E+00 2.29E+01 TM 04 22459 04/05/95 I-131 0.11E+00 7.23E-02 0.21E+00

TM 04 22459 04/05/95 K-40 1.25E+03 5.55E+01 7.54E+01

TM 04 22459 04/05/95 Mn-54 -2.77E+00 1.84E+00 6.66E+00 4 TM 04 ??d59 04/05/95 Ru-103 0.69E+00 2.11E+00 7.19E+00 4 TM 04 22459 04/05/95 Ru-106 1.04E+00 1.79E+01 6.28E+01 TM 04 22459 04/05/95 Sb-124 -4.54E+00 3.93E+00 1.55E+01 TM 04 22459 04/05/95 Se-75 -3.13E+00 2.36E+00 8.05E+00

< TM 04 22459 04/05/95 En-65 -2.84E+00 4.85E+00 1.72E+01 l TM 04 22459 04/05/95 Er-95 -2.22E+00 3.36E+00 1.18E+01 l

TM 04 22785 04/19/95 AcTh228 3.27E+00 5.56E+00 1.96E+01 TM 04 22785 04/19/95 Ag-110M 4.55E+00 2.17E+00 6.81E+00 TM 04 22785 04/19/95 Ba-140 -2.03E+00 3.34E+00 1.35E+01 ,

TM 04 22785 04/19/95 Be-7 -1.95E+01 1.45E+01 5.67E+01 l TM 04 22785 04/19/95 Co-141 3.37E+00 3.06E+00 1.02E+01 1 TM 04 22785 04/19/95 co-144 -1,66E+01 1.12E+01 3.97E+01 i TM 04 22785 04/19/95 co-57 -1.04E+00 1.46E+00 5.08E+00 f TM 04 22785 04/19/95 co-58 -1.83E+00 1.77E+00 6.82E+00 1 1.64E+00 6.89E+00 TM 04 22785 04/19/95 Co-60 -2.50E+00 TM 04 22785 04/19/95 Cr-51 -7.88E+00 1.54E+01 5.54E+01 '

1

, TM 04 22785 04/19/95 Cs-134 -1.20E+00 1.45E+00 5.275+00 TM 04 22785 04/19/95 Co-137 0.47E+00 1.70E+00 5.84E+00 TM 04 22785 04/19/95 Fe-59 4.11E+00 5.16E+00 1.76E+01 ,

TM 04 22785 04/19/95 I-131 0.18E+00 7.94E-02 0.19E+00 TM. 04 22785 04/19/95 K-40 1.45E+03 6.85E+01 6.76E+01 *

, TM 04 22785 04/19/95 Mn-54 0.00E+00 1.62E+00 5.89E+00 ;

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

~. - - . - - - - ~ - _ . . - - . - - . _ - . - .- ,- . .- . - . _ - . . -

i i Seabrook Station Radiological Environmental Data (January - December 1995) t

' SAMPLE CONC. STD DEV. MDC I TYPE STA. L8N END DATE NUCLIDE (pC1/kg) (pci/kg) (pci/kg)

TM 04 22785 .04/19/95 Ru-103 -2,10E+00 2.12E+00 8.05E+00

~

TM 04 22785 04/19/95 Ru-106 -2.20E+01- 1.34E+01 5.14E+01 j TM 04 22785 04/19/95 Sb-124 4.53E+00 3.68E+00 1.28E+01 TM 04 22785 04/19/95 so-75 -3.55E+00 2.09E+00 7.69E+00 TM 04 22785 04/19/95 In-65 -8.82E+GO. 4.57E+00 1.85E+01 l

j- TM 04 22785 04/19/95 Er-95 -3.40E+00 3.31E+00 1.26E+01

TM 04 23067 05/03/95 AcTh228 -3.65E+00 8.28E+00 3.09E+01 TM 04 23067 05/03/95 Ag-110M 1.71E+00 2.76E+00 9.85E+00 i TM 04 23067 05/03/95 Ba-140 1.23E+00 2.94E+00 1.07E+01

TM 04 23067 05/03/95 Be-7 4.05E+00 1.36E+01 4.64E+01 TM 04 23067 05/03/95 Co-141 -3.07E+00 3.06E+00 1.07E+01 TM 04 23067 05/03/95 Co-144 2.75E+00. 1.24E+01 4.20E+01 TM 04 23067 05/03/95 Co-57 -1.83E+00 1.57E+00 5.49E+00 i TM 04 23067 05/03/95 Co-58 0.23E+00 1.92E+00 6.90E+00 TM 04 23067 05/03/95 Co-60 0.31E+00 2.30E+00 8.37E+00 TM 04 23067 05/03/95 Cr-51 -3.95E+00 1.67E+01 6.08E+01 TM 04 23067 05/03/95 Cs-134 -0.93E+00 1.77E+00 6.41E+00 TM 04 23067 05/03/95 Cs-137 0.20E+00 1.89E+00 6.74E+00

- TM 04 23067 05/03/95 Fe-59 -2.86E+00 5.93E+00 2.25E+01 TM 04 23067 05/03/95 I-131 -1.40E-02 5.26E-02 0.25E+00 TM 04 23067 05/03/95 K-40 1.41E+03 7.44E+01 1.10E+02 *

' TM 04 23067 05/03/95 Mn-54 -2.18E+00 1.93E+00 7.33E+00 i TM 04 23067 05/03/95 Ru-103 2.04E+00 1.98E+00 6.47E+00

, TM 04 23067 05/03/95 Ru-106 1.25E+00 1.61E+01 5.72E+01 TM' 04 23067 05/03/95 Sb-124 -4.51E+00 4.15E+00 1.74E+01 TM 04 23067 05/03/95 So-75 -0.77E+00 2.33E+00 8.40E+00

+

TM 04 23067 05/03/95 En-65 -2.41E+00 4.33E+00 1.59E+01 TM 04 23067 05/03/95 Er-95 -3.16E+00 3.16E+00 1.21E+01 TM 04 23382 05/17/95 AcTh228 -1.06E+01 7.19E+00 2.85E+01 TM 04 23382 05/17/95 Ag-110M 3.70E+00 2.51E+00 8.30E+00 1

TM 04 23382 05/17/95 Ba-140 1.21E+00 2.27E+00 8.56E+00 TM 04 23382 05/17/95 Be-7 -3.57E+01 1.24E+01 5.27E+01 TM 04 23382 05/17/95 Co-141 -0.26E+00 2.52E+00 8.43E+00 TM 04 23382 05/17/95 Co-144 2.70E+00 9.54E+00 3.14E+01

TM 04 23382 05/17/95 Co-57 2.16E+00 1.19E+00 3.71E+00 TM 04 23382 05/17/95 Co-58 -0.48E+00 1.36E+00 5.19E+00 TM 04 23382 05/17/95 Co-60 1.06E+00 1.82E+00 6.77E+00 TM 04 23382 05/17/95 Cr-51 -1.30E+01 1.38E+01 5.16E+01 TM 04 23382 05/17/95 Cs-134 -1.56E+00 1.41E+00 5.71E+00 i TM 04 23382 05/17/95 Cs-137 6.09E+00 2.92E+00 1.04E+01

TM 04 23382 05/17/9$ Fe-59 -4.00E+00 5.86E+00 2.35E+01 TM 04 23382 05/17/95 I-131 7.19E-02 6.96E-02 0.24E+00 TM 04 23382 05/17/95 K-40 1.48E+03 7.70E+01 7.95E+01

TM 04 23382 05/17/95 ha-54 0.93E+00 1.49E+00 5.18E+00 TM 04 23382 05/17/95 Ru 103 -2.56E+00 1.51E+00 6.11E+00 TM 04 23382 05/17/95 Ru-106 -0.68E+00 1.45E+01 5.51E+01 4 TM 04 23382 05/17/95 Sb-124 1.00E+00 3.61E+00 1.41E+01 1 TM 04 23382 05/17/95 Se-75 1.46E+00 1.70E+00 5.57E+00 TM 04 23382 05/17/95 En-65 8.96E+00 4.05E+00 1.25E+01 TM 04 23382 05/17/95 Er-95 5.83E+00 2.43E+00 6.95E+00 l .

TM 04 23641 05/31/95 AcTh228 1.57E+00 4.28E+00 1.49E+01 int 04 23641 05/31/95 Ag-110M 0.15E+00 1.57E+00 5.54E+00 j

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4 4

. - . .._- - - - - . ..- - . . ~ ~. - - - - . - . - - - - - . . _ - _ - _ - - - - . - - .

l I

l Seabrook station Radiological Environmental Data

(January - December 1995)

SAMPLE CONC. STD DEV. MDC f (pC1/kg) (pCi/kg) (pC1/kg) l TYPE STA. L8N END DATE NUCLIDE I

TM 04 23641 05/31/95 Ba-140 -9.81E-02 .1.82E+00 6.82E+00

)

TM 04 23641 05/31/95 Be-7 2.21E+00 1.02E+01 3.64E+01

) TM 04 23641 05/31/95 Co-141 2.45E+00 1.91E+00 6.33E+00 TM 04 23641 05/31/95 Co-144 0.85E+00 7.58E+00 2.57E+01

, TM 04 23641 05/31/95 Co-57 0.77E+00 1.00E+00 3.34E+00 TM 04 23641 05/31/95 Co-58 0.89E+00 1.13E+00 3.86E+00

TM 04 23641 05/31/95 Co-60 0.89E+00 1.34E+00 4.65E+00 TM 04 23641 05/31/95 Cr-51 1.20E+00 1.00E+01 3.44E+01 ,

TM 04 23641 05/31/95 Co-134 -1.92E+00 1.04E+00 3.77E+00 l TM 04 23641 05/31/95 Co-137 3.77E+00 1.59E+00 5.04E+00 TM 04 23641 05/31/95 Fe-59 -3.69E+00 3.76E+00 1.37E+01 i TM 04 23641 05/31/95 I-131 7.33E-02 4.60E-02 0.14E+00 TM 04 23641 05/31/95 K-40 1.32E+03 4.77E+01 6.06E+01

l f

TM 04 23641 05/31/95 Mn-54 -0.29E+00 ' 1.12E+00 4.01E+00 )

3 j TM 04 23641 05/31/95 Ru-103 -1.76E+00 1.26E+00 4.76E'00 1

.TM 04 23641 05/31/95 Ru-106 -2.02E+01 9.50E+00 3.52E+01 (

2.69E+00 2.94E+00 1.03E+01

, TM 04 23641 05/31/95 Sb-124 i TM 04 23641 05/31/95 Se-75 -1.81E+00 1.36E+00 4.34E+00

'134 04 23641 05/31/95 En-65 2.52E+00 2.94E+00 1.03E+01 ,

TM 04 23641 05/31/95 Er-95 0.93E+00 2.07E+00 7.16E+00 l TM 04 23978 06/14/95 AcTh228 5.45E+00 5.10E+00 1.73E+01 l 1.99E+00 7.38E+00 j TM 04 23978 06/14/95 Ag-110M -1.16E+00

! TM 04 23978 06/14/95 Ba-140 0.76E+00 2.28E+C0 8.59E+00 TM 04 23978 06/14/95 Be-7 1.07E+01 1.21E+01 4.27E+01 TM 04 23978 06/14/95 Co-141 -1.91E+00 2.48E+LO 8.63E+00 TM 04 23978 06/14/95 Co-144 1.75E+01 9.28E+0C 3.03E+01 TM 04 23978 06/14/95 Co-57 -1.93E+00 1.21E+00 4.28E+00 l 5.41E+00 i TM 04 23978 06/14/95 Co-58 -1.70E+00 1.40E+00 j TM 04 23978 06/14/95 Co-60 -2.96E+00 1.69E+00 6.80E+00

TM 04 23978 06/14/95 Cr-51 3.87E+00 1.28E+01 4.41E+01

TM 04 23978 06/14/95 Cs-134 -1.75E+00 1.96E+00 7.13E+00 i TM 04 23978 06/14/95 Cs-137 9.93E+00 1.99E+00 5.91E+00

TM 04 23978 06/14/95 Fe-59 2.59E+00 4.70E+00 1.61E+01 TM 04 23978 06/14/95 I-131 4.14E-02 5.98E-02 0.22E+00 TM 04 23978 06/14/95 K-40 1.35E+03 5.96E+01 7.49E+01 *

{ -0.64E+00 1.62E+00 5.86E+00 TM 04 23978 06/14/95 Mn-54 TM 04 23978 06/14/95 Ru-103 -1.61E+00 1.78E+00 6.68E+00 l

TM 04 23978 06/14/95 Ru-106 -1.92E+01 1.14E+01 4.31E+01 TM 04 23978 06/14/95 sb-124 -3.35E+00 3.14E+00 1.34E+01 2 TM 04 23978 06/14/95 so-75 -1.24E+00 1.80E+00 6.35E+00

] TM 04 23978 06/14/95 En-65 -4.05E+00 3.75E+00 1.45E+01 1 TM 04 23978 06/14/95 Zr-95 -1.46E+00 2.73E+00 1.00E+01 j TM 04 24216 06/28/95 AcTh228 -7.77E+00 6.53E+00 2.58E+01 i TM 04 24216 06/28/95 Ag-110M -1.00E+00 2.34E+00 8.82E+00

~ TM 04 24216 06/28/95 Ba-140 0.53E+00 2.72E+00 1.05E+01 TM 04 24216 06/28/95 Be-7 1.92E+01 1.53E+01 5.16E+01 j TM 04 24216 06/28/95 Co-141 -1.06E+00 2.90E+00 9.76E+00 TM 04 24216 06/28/95 Co-144 -5.41E+00 1.04E+01 3.52E+01 TM 04 24216 06/28/95 Co-57 -0.14E+00 1.42E+00 4.73E+00 TM 04 24216 06/28/95 Co-58 -3.09E+00 1.88E+00 7.54E+00 TM 04 24216 06/28/95 Co-60 -3.70E+00 2.36E+00 9.87E+00 j TM 04 24216 06/28/95 Cr-51 -3.33E+00 1.63E+01 5.87E+01

TM 04 24216 06/28/95 Cs-134 -1.20E+00 1.68E+00 6.44E+00 l .

2

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). l I

)

- __ - . . _ _ _ . _ _ . .. _ _ _ _ _ _ _ _ _ _ _ . . _ . _ _ _ ~ _ _ _ _ . _

d Seabrook Station Radiological Environmental Data 3 (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

~~-------~~~~~----~~~~~------~~--------------~~~~-------------~~~~~

TM 04 24216 06/28/95 Cs-137 6.99E+00 2.69E+00 9.33E+00 TM 04 24216 06/28/95 Fe-59 -1.09E+01 5.32E+00 2.38E+01 TM 04 24216 06/28/95 I-131 0.11E+00 0.10E+00 0.35E+00

TM 04 24216 .06/28/95 K-40 1.36E+03 7.84E+01 8.91E+01

2 TM 04 24216 06/28/95 Mn-54 0.41E+00 1.62E+00 5.79E+00

TM 04 24216 06/28/95 Ru-103 2.59E+00 1.88E+00 6.26E+00 TM 04 24216 06/28/95 Ru-106 1.13E+01 1.61E+01 5.81E+01 i

4 TM 04 24216 06/28/95 sb-124 3.91E+00 3.68E+00 1.27E+01 TM 04 24216 06/28/95 so-75 -1.80E+00 1.91E+00 6.79E+00 TM 04 24216 06/28/95 En-65 -4.25E+00 4.53E+00 1.79E+01 TM 04 24216 -06/28/95 Er-95 -2.85E+00 3.40E+00 1.37E+01 L

1 TM 04 24418 07/12/95 AcTh228 0.83E+00 4.02E+00 1.40E+01 TM 04 24418 07/12/95 Ag-110M -0.81E+00 1.45E+00 5.25E+00 TM 04 24418 07/12/95 Ba-140 0.28E+00 1.68E+00 6.05E+00

TM 04 24418 07/12/95 Be-7 3.56E+00 8.63E+00 3.08E+01 l TM 04 24418 07/12/95 Co-141 -0.31E+00 1.80E+00 5.91E+00 TM 04 24418 07/12/95 Co-144 -4.80E+00 6.03E+00 1.99E+01

TM 04 24418 07/12/95 Co-57 1.60E+00 0.81E+00 2.52E+00 j TM 04 24418 07/12/95 Co-58 -0.25E+00 0.99E+00 3.45E+00 TM 04 24418 07/12/95 Co-60 1.52E+00 0.89E+00 2.95E+00 TM 04 24418 07/12/15 Cr-51 2.47E+00 9.99E+00 3.43E+01 TM 04 24418 07/12/95 Cs-134 -2.42E+00 1.14E+00 4.39E+00 TM 04 24418 07/11/95 Cis-137 7.59E+00 1.41E+00 4.30E+00

TM 04 24418 07/12/95 Fe-59 5.28E+00 3.91E+00 1.34E+01 4

TM 04 24418 07/12/95 I-131 -8.37E-02 4.21E-02 0.31E+00-TM 04 24418 07/12/95 K-40 1.44E+03 4.57E+01 5.31E+01 *

, TM 04 24418 07/12/95 Mn-54 1.11E+00 1.02E+00 3.42E+00

j. TM 04 24418 07/12/95 Ru-103 -2.70E+00 1.22E+00 4.72E+00 TM 04 24418 07/12/95 Ru-106 1.47E+01 8.56E+00 2.90E+01 24418 07/12/95 0.73E+00 1.99E+00 7.16E+00

[ TM 04 sb-124 Se-75 0.14E+00 1.34E+00 4.58E+00 TM 04 24418 07/12/95 TM 04 24418 07/12/95 En-65 -0.46E+00 2.53E+00 9.01E+00 TM 04 24418 07/12/95 Er-95 4.25E+00 1.70E+00 5.13E+00 (

TM 04 24691 07/26/95 AcTh228 9.94E+00 6.54E+00 2.11E+01 TM 04 24691 07/26/95 Ag-110M 2,56E+00 2.45E+00 7.87E+00 ,

2.51E+00 9.34E+00 TM 04 24691 07/26/95 Ba-140 1.41E+00 l TM 04 24691 07/26/95 Be-7 . 1.30E+01 1.33E+01 4.57E+01 i TM 04 24691 07/26/95 Co-141 -2.73E+00 2.95E+00 1.01E+01

, TM 04 24691 07/26/95 Co-144 3.74E+00 9.94E+00 3.27E+01 4 TM 04 24691 07/26/95 Co-57 0.21E+00 1.31E+00 4.32E+00 TM 04 24691 07/26/95 Co-58 1.03E+00 1.81E+00 6.28E+00 TM 04 24691 07/26/95 Co-60 -2.40E+00 1.96E+00 8.28E+00

TM 04 24691 07/26/95 Cr-51 -9.69E+00 1.53E+01 5.64E+01 l TM 04 24691 07/26/95 Cs-134 0 23E+00 1.70E+00 6.16E+00 i TM 04 24691 07/26/95 Cs-137 0.87E+00 2.25E+00 8.21E+00 '

TM 04 24691 07/26/95 Fs-59 9.88E+00 6.55E+00 2.16E+01 TM 04 24691 07/26/95 1-131 9.66E-02 5.93E-02 0.17E+00 4 TM 04 24691 07/26/95 K-40 1.37E+03 7.65E+01 7.21E+01 * ,

TM 04 24691 07/26/95 Mn-54 -2.41E+00 1.61E+00 6.48E+00 l

. TM 04 24691 07/26/95 Ru-103 -1.42E+00 2.17E+00 8.02E+00 i TM 04 24691 07/26/95 Ru-106 -2.34E+01 1.47E+01 6.19E+01 TM 04 24691 07/26/95 Sb-124 0.45E+00 3.00E+00 1.24E+01 TM 04 24691 07/26/95 so-75 0.81E+00 1.95E+00 6.51E+00 j

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

n

_, _ . _ _ . ,-g -,n._. , , . ,_ . , _ . . . - - _ _ , , , , _

I Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC 1YPE STA. L8N END DATE NUCLIDE (pCi/kg) (pci/kg) (pci/kg)

TM 04 24691 07/26/95 En-65 ~7.66E+00 4.12E+00 1.74E+01 TM 04 24691 07/26/95 Er-95 1.70E+00 2.98E+00 1.10E+01 TM 04 24864 08/09/95 AcTh228 2.77E+00 5.37E+00 1.933+01 ;

TM 04 24864 08/09/95 Ag-110M -1.33E+00 2.15E+00 8.29E+00 j TM 04 24864 08/09/95 Ba-140 -2.35E+00 2.95E+00 1.22E+01 j TM 04 24864 08/09/95 Be-7 1.17E+01 1.24E+01 4.26E+01 TM 04 24864 08/09/95 Co -141 -3.12E+00 2.44E+00 8.45E+00 TM 04 24864 08/09/95 Ce-144 4.26E+00 8.98E+00 2.93E+01 TM G4 24864 08/09/95 Co-57 -0.23E+00 1.11E+00 3.69E+00 TM 04 24864 08/09/95 Co-58 -2.07E+00 1.74E+00 6.62E+00 TH 04 24864 08/09/95 Co-60 -0.94E+00 1.88E+00 7.52E+00 TM 04 24864 08/09/95 Cr-51 -3.67E+00 1.54E+01 5.48E+01 i TM 04 24864 08/09/95 Cs-134 -8.86E-02 1.46E+00 5.47E+00 !

TM 04 24864 08/09/95 Cs-137 4.54E+00 P.60E+00 9.67E+00 .

TM 04 24864 08/09/95 Fe-59 -0.22E+00 5.73E+00 2.18E+01 1 TM 04 24864 08/09/95 I-131 -7.23E-02 6.46E-02 0.36E+00 i TH 04 24864 08/09/95 K-40 1.22E+03 6.64E+01 7.40E+01 *

~

TM 04 24864 08/09/95 Mn-54 -1.28E+00 1.45E+00 5.55E+00 TM 04 24864 08/09/95 Ru-103 -2.60E+00 1.46E+00 5.88E+00

TM 04 24864 08/09/95 Ru-106 -6.69E+00 1.32E+01 5.14E+01 ;

TM 04 24864 08/09/95 Sb-124 5.34E+00 2.,94E+00 8.84E+00 !

TM 04 24864 08/09/95 Se-75 0.23E+00 1.71E+00 5.77E+00

TM 04 24864 08/09/95 Zn-65 -6.31E+00 3.93E+00 1.59E+01 j TM 04 24864 08/09/95 Zr-95 -2.31E+00 2.67E+00 1.02E+01 l l TM 04 25108 08/23/95 AcTh228 -5.75E+00 6.64E+00 2.58E+01

! TM 04 25108 08/23/95 Ag-110M 1.10E+00 2.62E+00 9.37E+00

. TM 04 25108 08/23/95 Ba-140 -0.67E+00 2.22E+00 9.45E+00 t

TM 04 25108 08/23/95 Be-7 -1.21E+00 1.27E+01 4.68E+01 TM 04 25108 08/23/95 Co-141 2.06E+00 2.78E+00 8.98E+00 TM 04 25108 08/23/95 Ce-144 1.65E+01 9.97E+00 3.13E+01 TM 04 25108 08/23/95 Co-57 0.83E+00 1.26E+00 4.09E+00 TM 04 25108 08/23/95 Co-58 1.91E+00 1.71E+00 5.68E+00 l TM 04 25108 08/23/95 Co-60 -2.01E+00 2.18E+00 8.92E+00 TM 04 25108 08/23/95 Cr-51 -2.25E+01 1.51E+01 5.73E+01 Cs-134 -1.75E+00 1.81E+00 7.10E+00

TM 04 25108 08/23/95 TM 04 25108 08/23/95 Cs-137 2.80E+00 1.90E+00 6.48E+00 TM 04 25108 08/23/95 Fe-59 6.00E+00 6.05E+00 2.14E+01

TM 04 25108 08/23/95 I-131 0.00E+00 5.16E-02 0.23E+00 TM 04 25108 08/23/95 K-40 1.37E+03 7.61E+01 1.04E+02

I TM 04 25108 08/23/95 Mn-54 -2.21E+00 1.47E+00 5.94E+00 TM 04 25108 08/23/95 Ru-103 -3.12E+00 1.64E+00 6.62E+00 i TM 04 25108 08/23/95 Ru-106 -0.67E+00 1.64E+01 6.14E+01 TM 04 25108 08/23/95 Sb-124 -3.04E+00 3.65E+00 1.61E+01 l TM 04 25108 08/23/95 Se-75 -8.74E-02 1.87E+00 6.35E+00 TM 04 25108 08/23/95 Zn-65 3.18E+00 4.27E+00 1.50E+01 TM 04 25108 08/23/95 Zr-95 7.39E+00 2.93E+00 8.48E+00 TM 04 25294 09/06/95 AcTh228 2.90E+00 6.06E+00 2.13E+01 TM 04 25294 09/06/95 Ag-110M -0.83E+00 2.02E+00 7.60E+00 TM 04 25294 09/06/95 Ba-140 -0.40E+00 2.22E+00 8.61E+00 i TM 04 25294 09/06/95 Be-7 -5.79E+00 1.34E+01 5.03E+01 TM 04 25294 09/06/95 Co-141 -2.36E+00 2.47E+00 8.40E+00 TM 04 25294 09/06/95 Co-144 -6.92E+00 8.42E+00 2.86E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l l

, - l

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/kg) (pC1/kg) (pci/kg)

TM 04 25294 09/06/95 Co-57 -2.29A+00 1.13E+00 3.94E+00 TM 04 25294 09/06/95 Co-58 -1.20h+00 1.42E+00 5.33E+00 TM 04 25294 09/06/95 Co-60 -2.43E+00 1.92E+00 7.80E+00 TM 04 25294 09/06/95 Cr-51 -2.15D+01 1.38E+01 5.16E+01 TM 04 25294 09/06/95 Cs-134 -0.91E+00 1.46E+00 5.59E+00 TM 04 25294 09/06/95 Cs-137 2.27E+00 1.54E+00 4.92E+00 TM 04 25294 09/06/95 Fe-59 1.88E+00 4.98E+00 1.83E+01 TM 04 25294 09/06/95 I-131 0.00E+00 6.70E-02 0.30E+00 TM 04 25294 09/06/95 K-40 1.17E+03 6.02E+01 7.84E+01

TM 04 25294 09/06/95 Mn-54 -0.96E+00 1.40E+00 5.32E+00 TM 04 25294 09/06/95 Ru-103 -4.61E+00 1.67E+00 6.90E+00 TM 04 25294 09/06/95 Ru-106 1.29E+00 1.38E+01 5.11E+01 TM 04 25294 09/06,95 Sb-124 -0.90E+00 2.65E+00 1.09E+01 TM 04 25294 09/06/S8 Se-75 1.54E+00 1.80E+00 6.10E+00 TM 04 25294 09/06/95 Zn-65 0.53E+00 3.96E+00 1.42E+01 TM 04 25294 09/06/95 Zr-95 1.50E+00 2.64E+00 9.01E+00 TM 04 25543 09/20/95 AcTh228 -7.63E+00 8.52E+00 3.25E+01 TM 04 25543 09/20/95 Ag-110M 2.51E+00 2.90E+00 1.00E+01 TM 04 20543 09/20/95 Ba-140 2.29E+00 3.15E+00 1.15E+01 TM 04 25543 09/20/95 Be-7 -5.88E+00 1.29E+01 4.90E+01 TM 04 25543 09/20/95 Co-141 -0.67E+00 2.88E+00 9.65E+00 TM 04 25543 09/20/95 Co-144 3.04E+01 1.13E+01 3.42E+01 TM 04 25543 09/20/95 Co-57 -0.11E+00 1.33E+00 4.43E+00 TM 04 25543 09/20/95 Co-58 -4.59E+00 1.87E+00 7.87E+00 TM 04 25543 09/20/95 Co-60 3.36E+00 2.06E+00 6.85E+00

, TM 04 25543 09/20/95 Cr-51 3.42E+00 1.71E+01 6.03E+01 TM 04 25543 09/20/95 Cs-134 -7.64E+00 3.85E+00 1.32E+01 TM 04 25543 09/20/95 Cs-137 3.42E+00 1.94E+00 6.49E+00 TM 04 25543 09/20/95 Fe-59 0.41E+00 6.13E+00 2.36E+01 TM 04 25543 09/20/95 I-131 0.14E+00 0.12E+00 0.38E+00 TM 04 25543 09/20/95 K-40 1.23E+03 7.67E+01 1.01E+02

TM 04 25543 09/20/95 Mn-54 -0.40E+00 1.61E+00 6.00E+00 TM 04 25543 09/20/95 Ru-103 -0.25E+00 1.78E+00 6.57E+00 TM 04 25543 09/20/95 Ru-106 -1.76E+01 1.59E+01 6.48E+01 TM 04 25543 09/20/95 Sb-124 1.43E+00 3.41E+00 1.35E+01 TM 04 25543 09/20/95 Se-75 1.36E+00 2.05E+00 6.76E+00 TM 04 25543 09/20/95 Zn-65 -8.68E+00 5.01E+00 2.22E+01 TM 04 25543 09/20/95 Zr-95 -1.38E+00 2.81E+00 1.07E+01 TM 04 25756 10/04/95 AcTh228 4.66E+00 5.34E+00 1.83E+01 TM 04 25756 10/04/95 Ag-110M 0.00E+00 1.86E+00 6.73E+00 TM 04 25756 10/04/95 Ba-140 0.00E+00 1.75E+00 6.80E+00 TM 04 25756 10/04/95 Be-7 1.04E+00 9.56E+00 3.41E+01 TM 04 25756 10/04/95 Ce-141 1.99E+00 1.85E+00 5.91E+00 TM 04 25756 10/04/95 Ce-144 -0.78E+00 6.97E400 2.30E+01 TM 04 25756 10/04/95 Co-57 3.25E-02 0.89E+00 2.93E+00 TM 04 25756 10/04/95 Co-58 -1.22E+00 1.16E+00 4.40E+00 TM 04 25756 10/04/95 Co-60 0.22E+00 1.38E+00 5.22E+00 TM 04 25756 10/04/95 Cr-51 3.59E+00 1.08E+01 3.76E+01 TM 04 25756 10/04/95 Cs-134 -2.63E+00 1.28E+00 5.08E+00 TM 04 25756 10/04/95 Cs-137 1.44E+00 1.49E+00 5.22E+00 TM 04 25756 10/04/95 Fe-59 1.51E+00 4.49E+00 1.64E+01 TM 04 25756 10/04/95 I-131 -2.52E-03 4.58E-02 0.21E+00 TM 04 25756 10/04/95 K-40 1.20E+03 5.42E+01 6.13E+01 *

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

- _ ~ _ _ _- _ . _ . _ - _ ._ - , _ _ ._ _ _ . _ ._ .. _ _ _ . _ _

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. ~

STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pCi/kg)

TM- 04 25756 10/04/95 Mn-54 -3.61E+00 1.07E+00 4.56E+00

' TM 04 25756 10/04/95 Ru-103 -2.36E+00- 1.28E+00 4.96E+00 TM 04 25756 10/04/95 Ru-106 1.84E+00 1.13E+01 4.16E+01 TM 04 25756 10/04/95 sb-124 0.00E+00 2.99E+00 1.15E+01 1-TM 04 25756 10/04/95 so-75 0.55E+00 1.32E+00 4.34E+00 i TM 04 25756 10/04/95 En-65 1.43E+00 3.28E+00 1.15E+01 TM 04 25756 10/04/95 Er-95 -3.20E+00 1.92E+00 7.54E+00 4

TM 04 26354 11/01/95 AcTh228 -4.89E+00 6.13E+00 2.30E+01

7.43E+00 j TM 04 26354 11/01/95 Ag-110M 0.70E+00 2.08E+00 TM 04 26354 11/01/95 Ba-140 7.17E+00 2.90E+00 8.39E+00

' TM 04 26354 11/01/95 Be-7 -2.35E+01 1.14E+01 4.52E+01

TM 04 26354 11/01/95 Co-141 -6.88E+00 2.41E+00 8.55E+00 i TM 04 26354 11/01/95 Co-144 1.73E+00 8.10E+00 2.65E+01 TM 04 26354 11/01/95 Co-57 -1.80E+00 1.03E+00 3.55E+00

TM 04 26354 11/01/95 Co-58 -0.38E+00 1.46E+00 5.26E+00 TM 04 26354 11/01/95 Co-60 -1.59E+00 1.51E+00 6.27E+00

- TM 04 26354 11/01/95 Cr-51 2.37E+00 1.43E+01 4.99E+01 j TM 04 26354 11/01/95 Cs-134 -3.16E+00 2.63E+00 8.56E+00 TM 04 26354 11/01/95 Cs-137 3.51E+00 1.57E+00 5.14E+00 TM 04 26354 11/01/95 Fe-59 -0.69E+00 5.18E+00 1.97E+01

0.36E+00

! TM 04 26354 11/01/95 I-131 -5.62E-02 6.45E-02 TM 04 26354 11/01/95 K-40 1.36E+03 6.33E+01 7.18E+01 *

! TM 04 26354 11/01/95 Mn-54 5.46E-02 1.48E+00 5.19E+00 TM 04 26354 11/01/95 Ru-103 1.55E+00 1.53E+00 5.20E+00 TM 04 26354 11/01/95 Ru-106 -2.23E+00 1.21E+01 4.59E+01

. TM 04 26354 11/01/95 sb-124 -4.86E+00 3.09E+00 1.41E+01 TM 04 26354 11/01/95 Se-75 0.72E+00 1.63E+00 5.38E+00 TM 04 26354 11/01/95 En-65 -2.34E+00 3.83E+00 1.43E+01 l 9.07E+00 s TM 04 26354 11/01/95 Er-95 2.48E+00 2.72E+00 TM 04 26779 11/30/95 AcTh228 -7.96E+00 5.84E+00 2.27E+01 TM 04 26779 11/30/95 Ag-110M -0.84E+00 2.02E+00 7.57E+00 TM 04 26779 11/30/95 Ba-140 -1.11E+00 2.23E+00 8.75E+00 TM 04 26779 11/30/95 Be-7 -1.31E+00 1.35E+01 4.98E+01

- TM - 04 26779 11/30/95 Co-141 2.73E+00 2.25E+00 7.15E+00 TM 04 26779 11/30/95 Co-144 1.32E+01 9.14E+00 2.89E+01 4 TM 04 26779 11/30/95 Co-57 -1.44E+00 1.12E+00 3.82E+00 i TM 04 26779 11/30/95 Co-58 -1.30E+00 1.38E+00 5.22E+00 TM 04 26779 11/30/95 Co-60 0.81E+00 1.74E+00 6.40E+00 TM 04 26779 11/30/95 Cr-51 2.88E+01 1.29E+01 4.10E+01 TM 04 26779 11/30/95 Cs-134 5.49E-02 1.53E+00 5.66E+00 TM 04 26779 11/30/95 Cs-137 1.82E+00 1.58E+00 5.17E+00 TM 04 26779 11/30/95 Fe-59 -4.96E+00 5.0?E+00 2.03E+01 TM 04 26779 11/30/95 I-131 0.11E+00 9.95c-02 0.27E+00 TM 04 26779 11/30/95 K-40 1.31E+03 6.39E+01 8.48E+01

TM 04 26779 11/30/95 Mn-54 -0.19E+00 1.68E+00 6.07E+00 TM 04 26779 11/30/95 Ru-103 -2.34E+00 1.61E+00 6.34E+00 TM 04 26779 11/30/95 Ru-106 -1.80E+00 1.36E+01 5.09E+01 TM 04 26779 11/30/95 Sb-124 3.32E+00 2.66E+00 8.90E+00 j TM 04 26779 11/30/95 Se-75 2.78E+00 1.95E+00 6.44E+00 0 TM 04 26779 11/30/95 En-65 0.00E+00 3.74E+00 1.36E+01 TM 04 26779 11/30/95 Er-95 -1.59E+00 2.56E+00 9.41E+00 TM 04 27202 12/27/95 AcTh228 3.86E+00 4.04E+00 1.37E+01

,

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4 4

- -. . . .-. - - - . . - . . - ~- . . . . . .

1 Seabrook Station Radiological Environmental Data i (January - December 1995) 4 SAMPLE CONC. STD DEV. .MDC TYPE STA. LSN END DATE NUCLIDE (pC1/kg) (pci/kg) (pCi/kg)

' TM 04 27202 12/27/95 Ag-110M -0.54E+00 1.38E+00 4.99E+00 TM 04 27202 12/27/95 Ba-140 -0.43E+00 2.03E+00 7.44E+00 TM 04 27202 12/27/95 Be-7 -2.50E+00 9.36E+00 3.41E+01 TM 04 27202 12/27/95 Co-141 0.64E+00 1.78E+00 5.74E+00 TM 04 27202 12/27/95 Co-144 1.77E+00 6.29E+00 2.03E+01 TM 04 27202 12/27/95 Co-57 1.06E+00 0.79E+00 2.51E+00 TM 04 27202 12/27/95 Co-58 -0.36E+00 1.00E+00 3.51E+00 TM 04 27202 12/27/95 Co-60 0.38E+00 1.19E+00 4.32E+00 TM 04 27202 12/27/95 Cr-51 9.01E+00 1.04E+01 3.49E+01 TM 04 27202 12/27/95 Cs-134 0.74E+00 0.94E+00 3.33E+00 TM 04 27202 12/27/95 Cs-137 3.09E+00 1.14E+00 3.45E+00 TM 04 27202 12/27/95 Fe-59 5.14E+00 3.57E+00 1.21E+01 TM 04 27202 12/27/95 I-131 -7.42E-02 3.72E-02 0.27E+00 TM 04 27202 12/27/95 K-40 1.34E+03 4.42E+01 5.28E+01

TM 04 27202 12/27/95 Mn-54 1.02E+00 0.96E+00 3.25E+00 4

TM 04 27202 12/27/95 Ru-103 -2.21E+00 1.26E+00 4.79E+00 TM 04 27202 12/27/95 Ru-106 -1.54E+01 9.32E+00 3.59E+01 TM 04 27202 12/27/95 Sb-124 3.79E-02 2.28E+00 8.31E+00 TM 04 27202 12/27/95 Se-75 1.66E+00 1.32E+00 4.38E+00 TM 04 27202 12/27/95 Zn-65 -5.77E+00 2.33E+00 9.19E+00 TM 04 27202 12/27/95 Zr-95 0.33E+00 1.70E+00 5.84E+00 i

i' l

I

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l 4

i

seabrook station Radiological Environmental Data (January - December 1995)

CONC. STD DEV. MDC SAMPLE TYPE ~STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg)

TM 09 21087 01/11/95 AcTh228 -2.63E+00 5.03E+00 1.84E+01 TM 09 21087 01/11/95 Ag-110M -4.56E+00 1.67E+00 5.93E+00 TM 09 21087 01/11/95 Ba-140 0.60E+00 1.81E+00 5.78E+00 TM 09 21087 01/11/95 Be-7 -5.02E+00 1.05E+01 3.35E+01 TM 09 21087 01/11/95 Co-141 0.23E+00 2.06E+00 7.01E+00 TM 09 21087 01/11/95 Co-144 -6.21E+00 6.51E+00 1.96E+01 TM .09 21087 01/11/95 Co-57 0.24E+00 0.87E+00 2.56E+00 TM 09 21087 01/11/95 Co-58 -1.89E+00 1.04E+00 3.60E+00 TM 09 21087 01/11/95 Co-60 1.75E+00 1.33E+00 3.98E+00 TM 09 21087 01/11/95 Cr-51 1.23E+01 9.20E+00 2.57E+01 TM 09 21087 01/11/95 Cs-134 -2.07E+00 1.21E+00 4.08E+00 TM 09 21087 01/11/95 Cs-137 6.07E+00 1.37E+00 3.40E+00

TM 09 21087 01/11/95 Fe-59 -1.70E+00 2.68E+00 8.71E+00 TM 09 21087 01/11/95 I-131 5.68E-02 0.14E+00 0.56E+00 TM 09 21087 01/11/95 K-40 1.34E+05 5.22d+01 6.91E+01

TM 09 21087 01/11/95 Mn-54 -0.38E+00 1.07E+00 3.41E+00 TM 09 21087 01/11/95 Ru-103 -0.10E+00 1.30E+00 4.07E+00 TM 09 21087 01/11/95 Ru-106 3.38E+00 1.05E+01 3.24E+01 TM 09 21087 01/11/95 Sb-124 0.48E+00 2.29E+00 7.35E+00 TM 09 21087 01/11/95 Se-75 -2.54E+00 1.37E+00 4.27E+00 TM 09 21087 01/11/95 En-65 0.35E+00 2.80E+00 8.73E+00 TM 09 21087 01/11/95 Er-95 0.95E+00 1.96E+00 5.98E+00 TM 09 21572 02/08/95 AcTh228 9.12E+00 6.63E+00 2.26E+01 TM 09 21572 02/08/95 Ag-110M -6.83E+00 2.55E+00 1.02E+01 TM 09 21572 02/08/95 Ba-140 1.31E+00 3.30E+00 1.17E+01 TM 09 21572 02/08/95 Be-7 8.44E+00 1.25E+01 4.15E+01 TM- 09 21572 02/08/95 Co-141 6.70E+00 2.89E+00 9.37E+00 TM 09 21572 02/08/95 Co-144 1.05E+01 9.83E+00 3.27E+01 TM 09 21572 02/08/95 Co-57 0.57E+00 1.35E+00 4.56E+00 TM 09 21572 02/08/95 Co-58 2.36E+00 1.78E+00 5.94E+00 4 TM 09 21572 02/08/95 Co-60 -0.23E+00 1.96E+00 7.13E+00

, TM 09 21572 02/08/95 Cr-51 1.69E+00 1.61E+01 5.74E+01 I TM 09 21572 02/08/95 Cs-134 -2.78E+00 1.54E+00 5.72E+00

TM 09 21572 02/08/95 Cs-137 1.28E+00 1.83E+00 6.23E+00

TM 09 21572 02/08/95 Fe-59 -4.50E+00 '5.42E+00 2.04E+01 '

TM 09 21572 02/08/95 I-131 3.90E-02 8.23E-02 0.33E+00 l

TM 09 21572 02/08/95 K-40 1.41E+03 6.21E+01 8.94E+01

TM 09 21572 02/08/95 Mn-54 -3.55E+00 1.63E+00 6.29E+00 4

TM 09 21572 02/08/95 Ru-103 0.29E+00 1.72E+00 5.78E+00 TM 09 21572 02/08/95 Ru-106 -0.67E+00 1.42E+01 5.01E+01

, TM 09 21572 02/08/95 Sb-124 ~5.53E+00 3.89E+00 1.59E+01 TM 09 21572 02/08/95 So-75 -0.78E+00 2.10E+00 7.49E+00 TM 09 21572 02/08/95 En-65 -1.99E+00 4.20E+00 1.48E+01

TM 09 21572 02/08/95 Er-95 -4.33E+00 2.87E+00 1.09E+01 1

~

TM 09 22008 03/08/95 AcTh228 4.66E+00 4.93E+00 1.67E+01 TM -09 22008 03/08/95 Ag-110M -1.78E+00 1.65E+00 6.22E+00

, TM 09 22008 03/08/95 Ba-140 0.20E+00 1.70E+00 6.37E+00 TM 09 22006 03/08/95 Be-7 -4.94E+00 8.32E+00 3.04E+01 TM 09 22008 03/08/95 Co-141 -0.63E+00 1.73E+00 5.73E+00 TM 09 22008 03/08/95 Co-144 1.53E+01 6.51E+00 2.01E+01 l TM 09 22008 03/08/95 Co-57 0.14E+00 0.81E+00 2.63E+00 TM 09 22008 03/08/95 Co-58 -0.87E+00 1.12E+00 4.06E+00 TM 09 '22008 03/08/95 Co-60 0.62E+00 1.27E+00 4.61E+00

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

1

seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pCi/kg) (pci/kg)

TM 09 22008 03/08/95 Cr-51 0.71E+00 1.02E+01 3.54E+01 TM 09 22008 03/08/95 Cs-134 -0.45E+00 1.14E+00 4.20E+00 l TM 09 22008 03/08/95 Cs-137 -0.23E+00 1.28E+00 4.71E+00 TM 09 22008 03/08/95 Fe-59 3.43E+00 4.43E+00 1.56E+01 TM 09 22008 03/08/95 I-131 0.16E+00 0.16E+00 0.45E+00 K-40 1.36E+03 5.18E+01 5,94E+01

TM 09 22008 03/08/95 3.65E+00 TM 09 22008 03/08/95 Mn-54 -0.69E+00 1.00E+00 TM 09 22008 03/08/95 Ru-103 -2.18E+00 1.15E+00 4.39E+00 TM 09 22008 03/08/95 Ru-106 1.59E+01 1.00E+01 3.42E+01 1 TM OG 22008 03/08/95 Sb-124 -4.85E+00 2.27E+00 1.03E+01 TM 09 22008 03/08/95 Se-75 -1.99E+00 1.26E+00 4.37E+00 TM 09 22008 03/08/95 Zn-65 3.07E+00 2.79E+00 9.43E+00 TM 09 22008 03/08/95 Zr-95 2.14E+00 2.00E+00 6.56E+00 TM 09 22460 04/05/95 AcTh228 1.24E+01 7.33E+00 2.40E+01 TM 09 22460 04/05/95 Ag-110M -4.12E+00 3.03E+00 1.10E+01 TM 09 22460 04/05/95 Ba-140 -1.09E+00 2.60E+00 9.o2E+00 TM 09 22460 04/05/95 Be-7 -3.83E+01 1.66E+01 s.07E+01 TM 09 22460 04/05/95 Co-141 -0.87E+00 3.32E+00 1.12E+01 TM 09 22460 04/05/95 Co-144 -3.94E+00 1.25E+01 4. 2E+01 TM 09 22460 04/05/95 Co-57 -1.25E+00 1.64E+00 5.59E+00 TM 09 22460 04/05/95 Co-58 1.21E+00 2.04E+00 6.85E+00 TM 09 22460 04/05/95 Co-60 1.68E+00 1.99E+00 6.91E+00 TM 09 22460 04/05/95 Cr-51 -1.96E+01 1.90E+01 6.46E+01 j TM 09 22460 04/05/95 Cs-134 0.11E+00 1.91E+00 6.71E+00 TM 09 22460 04/05/95 Cs-137 -1.90E+00 2.17E+00 7.84E+00 TM 09 22460 04/05/95 Fe-59 3.26E+00 6.65E+00 2.33E+01 TM 09 22460 04/05/95 I-131 6.94E-02 7.49E-02 0.27E+00 TM 09 22460 04/05/95 K-40 1.25E+03 5.34E+01 6.72E+01 *

, TM 09 22460 04/05/95 Mn-54 -1.57E+00 1.95E+00 6.85E+00 TM 09 22460 04/05/95 Ru-103 4.24E+00 2.18E+00 7.11E+00

, TM 09 22460 04/05/95 Ru-106 -5.12E+00 1.81E+01 6.43E+01 TM 09 22460 04/05/95 Sb-124 -7.21E+00 4.00E+00 1.63E+01 TM 09 22460 04/05/95 Se-75 -4.09E+00 2.44E+00 8.38E+00 TM 09 22460 04/05/95 Zn-65 1.14E+01 4.73E+00 1.50E+01 TM 09 22460 04/05/95 Zr-95 2.20E+00 3.62E+00 1.21E+01 i

TM 09 22786 04/19/95 AcTh228 9.65E+00 5.44E+00 1.76E+01 TM 09 22786 04/19/95 Ag-110M 0.14E+00 2.22E+00 7.98E+00 ,

TM 09 22786 04/19/95 Ba-140 0.85E+00 2.52E+00 9.42E+00 l

, TM 09 22786 04/19/95 Be-7 1.25E+01 1.11E+01 3.74E+01 :

TM 09 22786 04/19/95 Co-141 1.08E+00 2.30E+00 7.48E+00 TM 09 22786 04/19/95 Co-144 2.99E+00 8.26E+00 2.69E+01 TM 09 22786 04/19/95 Co-57 1.31E+00 1.02E+00 3.23E+00 TM 09 22786 04/19/95 Co-58 0.64E+00 1.67E+00 5.73E+00 ;

TM 09 22786 04/19/95 Co-60 1.16E+00 1.70E+00 6.14E+00 l TM 09 22786 04/19/95 Cr-51 1.70E+01 1.25E+01 4.17E+01 TM 09 22786 04/19/95 Cs-134 1.56E+00 1.49E+00 5.20E+00 TM 09 22786 04/19/95 Cs-137 -1.85E+00 1.65E+00 6.41E+00 TM 09 22786 04/19/95 Fe-59 -1.07E+00 4.84E+00 1.86E+01 TM 09 22786 04/19/95 I-131 -4.67E-02 4.82E-02 0.25E+00 TM 09 22786 04/19/95 K-40 1.33E+03 6.32E+01 8.12E+01

j TM 09 22786 04/19/95 Mn-54 -1.17E+00 1.35E+00 5.02E+00 j TM 09 22786 04/19/95 Ru-103 -0.49E+00 1.44E+00 5.27E+00 TM 09 22786 04/19/95 Ru-106 1.70E+00 1.38E+01 5.09E+01 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pci/kg) (pC1/kg) l l

l TM 09 22786 04/19/95 Sb-124 -5.51E+00 3.28E+00 1.47E+01 TM 09 22786 04/19/95 So-75 -1.55E+00 1.61E+00 5.59E+00 TM 09 22786 04/19/95 Zn-65 -0.17E+00 3.92E+00 1.42E+01 TM 09 22786 04/19/95 Zr-95 2.29E+00 2.53E+00 8.47E+00 TM 09 23068 05/03/95 AcTh228 6.25E+00 5.20E+00 1.70E+01 l TM 09 23068 05/03/95 Ag-110M -3.51E+00 2.04E+00 7.88E+00 )

TM 09 23068 05/03/95 Ba-140 -1.35E+00 2.03E+00 8.30E+00

TM 09 23068 05/03/95 Be-7 -1.10E+01 1.14E+01 4.26E+01 I TH 09 23068 05/03/95 Co-141 -3.51E+00 2.29E+00 7.83E+00 TM 09 23068 05/03/95 Co-144 1.36E+01 8.21E+00 2.58E+01 TM 09 23068 05/03/95 Co-57 -0.17E+00 1.04E+00 3.43E+00 TM 09 23068 05/03/95 Co-58 1.58E+00 1.53E+00 5.07E+00 ,

TM 09 23068 05/03/95 Co-60 2.22E+00 1.68E+00 5.65E+00 1 TM 09 23068 05/03/95 Cr-51 2.22E+01 1.32E+01 4.31E+01 l TM 09 23068 05/03/95 Cs-134 1.07E+00 1.15E+00 3.96E+00 1 TM 09 23068 05/03/95 Cs-137 1.65E+00 1.63E+00 5.71E+00 TM 09 23068 05/03/95 Fe-59 2.76E+00 5.16E+00 1.82E+01 i TM 09 23068 05/03/95 I-131 -9.26E-02 3.76E-02 0.29E+00 TM 09 23068 05/03/95 K-40 1.48E+03 6.53E+01 7.37E+01

i TM 09 23068 05/03/95 Mn-54 -0.32E+00 1.48E+00 5.25E+00 l TM 09 23068 05/03/95 Ru-103 -1.55E+00 1.42E+00 5.35E+00 l TM 09 23068 05/03/95 Ru-106 1.05E+01 1.27E+01 4.52E+01 (

TM 09 23068 05/03/95 Sb-124 -2.77E+00 2.99E+00 1.26E+01 l TM 09 23068 05/03/95 So-75 1.13E+00 1.58E+00 5.16E+00 TM 09 23068 05/03/95 Zn-65 -6.38E+00 3.53E+00 1.41E+01 TM 09 23068 05/03/95 Zr-95 -3.07E+00 2.78E+00 1.10E+01 6.64E+00 2.44E+01 I TM 09 23383 05/17/95 AcTh228 0.00E+00 TM 09 23383 05/17/95 Ag-110M -3.29E+00 2.45E+00 9.82E+00 TM 09 23383 05/17/95 Ba-140 6.38E+00 2.49E+00 6.71E+00 TM 09 23383 05/17/95 Be-7 5.03E+00 1.33E+01 4.72E+01 !

7.73E+00 TM 09 23383 05/17/95 Co-141 3.13E+00 2.43E+00 TM 09 23383 05/17/95 Co-144 3.79E+00 9.51E+00 3.11E+01 TM 09 23383 05/17/95 Co-57 0.99E+00 1.21E+00 3.92E+00 TM 09 23383 05/17/95 Co-58 -2.53E+00 1.55E+00 6.28E+00 TM 09 23383 05/17/95 Co-60 0.45E+00 2.14E+00 8.11E+00 TM 09 23383 05/17/95 Cr-51 ~7.13E+00 1.43E+01 5.21E+01 TM 09 23383 05/17/95 Cs-134 0.49E+00 1.59E+00 5.90E+00 TM 09 23383 05/17/95 Cs-137 1.08E+00 1.82E+00 6.63E+00 TM 09 23383 05/17/95 Fe-59 9.07E+00 5.40E+00 1.79E+01 TM 09 23383 05/17/95 I-131 7.35E-02 7.11E-02 0.24E+00 ,

TM 09 23383 05/17/95 K-40 1.29E+03 7.31E+01 9.40E+01

l TM 09 23383 05/17/95 Mn-54 -0.28E+00 1.52E+00 5.60E+00 1 TM 09 23383 05/17/95 Ru-103 -0.63E+00 1.44E+00 5.47E+00 )

TM 09 23383 05/17/95 Ru-106 2.72E+01 1.44E+01 4.78E+01 )

TM 09 23383 05/17/95 Sb-124 2.97E+00 3.28E+00 1.19E+01 TM 09 23383 05/17/95 Se-75 -1.12E+00 1.64E+00 5.79E+00 TM 09 23383 05/17/95 Zn-65 -0.63E+00 4.43E+00 1.64E+01 i TM 09 23383 05/17/95 Zr-95 1.53E+00 2.72E+00 9.46E+00 TM 09 23642 05/31/95 AcTh228 -1.53E+00 6.04E+00 2.23E+01 l TM 09 23642 05/31/95 Ag-110M -3.81E+00 2.09E+00 8.50E+00 l TM 09 23642 05/31/95 Ba-140 0.33E+00 2.09E+00 8.10E+00 ,

TM 09 23642 05/31/95 Be-7 -5.42E+00 1.23E+01 4.50E+01 l 1

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

TM 09 23642 05/31/95 Co-141 5.33E+00 2.24E+00 6.88E+00 TM 09 23642 05/31/95 Co-144 -7.86E+00 8.09E+00 2.75E+01 TM 09 23642 05/31/95 Co-57 -1.05E-02 1.08E+00 3.56E+00 TM 09 23642 05/31/95 Co-58 2.28E+00 1.45E+00 4.63E+00 TM 09 23642 05/31/95 Co-60 -1.38E+00 1.56E+00 6.49E+00 TM 09 23642 05/31/95 Cr-51 -5.83E+00 1.25E+01 4.52E+01 TM 09 23642 05/31/95 Cs-134 -1.54E+00 1.54E+00 5.99E+00 TM 09 23642 05/31/95 Cs-137 0.74E+00 1.57E+00 5.74E+00 TM 09 23642 05/31/95 Fe-59 2.26E+00 4.84E+00 1.78E+01 TM 09 23642 05/31/95 I-131 1.74E-02 3.60E-02 0.14E+00 TM 09 23642 05/31/95 K-40 1.32E+03 6.71E+01 9.18E+01

TM 09 23642 05/31/95 Mn-54 -1.50E+00 1.31E+00 5.06E+00 TM 09 23642 05/31/95 Ru-103 -1.71E+00 1.45E+00 5.56E+00 TM 09 23642 05/31/95 Ru-106 9.15E+00 1.21E+01 4.35E+01 TM 09 23642 05/31/95 Sb-124 0.57E+00 2.91E+00 1.15E+01 TM 09 23642 05/31/95 Se-75 1.37E+00 1.57E+00 5.10E+00 TM 09 23642 05/31/95 En-65 -2.03E+00 3.79E+00 1.43E+01 TM 09 23642 05/31/95 Zr-95 -3.02E+00 2.49E+00 9.57E+00 TM 09 23979 06/14/95 AcTh228 -1.15E+00 5.52E+00 1.99E+01 TM 09 23979 06/14/95 Ag-110M -0.46E+00 1.62E+00 6.04E+00 TM 09 23979 06/14/95 Ba-140 1.22E+00 2.41E+00 8.68E+00 TM 09 23979 06/14/95 Be-7 3.11E+00 9.99E+00 3.51E+01 TM 09 23979 06/14/95 Co-141 2.10E+00 2.06E+00 6.58E+00 TM 09 23979 06/14/95 Co-144 -6.61E+00 7.29E+00 2.44E+01 TM 09 23979 06/14/95 Co-57 0.25E+00 0.95E+00 3.10E+00 TM 09 23979 06/14/95 Co-58 -0.95E+00 1.27E+00 4.65E+00 TM 09 23979 06/14/95 Co-60 0.14E+00 1.48E+00 5.57E+00 TM 09 23979 06/14/95 Cr-51 -1.02E+01 1.13E+01 4.09E+01 TM 09 23979 06/14/95 Cs-134 1.09E+00 1.38E+00 4.88E+00 TM 09 23979 06/14/95 Cs-137 0.45E+00 1.46E+00 5.30E+00 ,

TM 09 23979 06/14/95 Fe-59 -0.43E+00 4.87E+00 1.81E+01 l TM 09 23979 06/14/95 I-131 -1.04E-02 3.67E-02 0.18E+00 l TM 09 23979 06/14/95 K-40 1.31E+03 5.71E+01 7.15E+01

l TM 09 23979 06/14/95 Mn-54 3.53E-03 1.36E+00 4.74E+00 TM 09 23979 06/14/95 Ru-103 0.39E+00 1.44E+00 5.02E+00 TM 09 23979 06/14/95 Ru-106 1.52E+01 1.19E+01 4.11E+01 TM 09 23979 06/14/95 Sb-124 -3.66E+00 2.73E+00 1.19E+01 (

TM 09 23979 06/14/95 Se-75 1.26E+00 1.50E+00 4.86E+00 l TM 09 23979 06/14/95 Zn-65 1.15E+00 3.60E+00 1.27E+01 1 TM 09 23979 06/14/95 Zr-95 -0.59E+00 2.40E+00 8.50E+00 l

. TM 09 24217 06/28/95 AcTh228 1.24E+01 7.90E+00 2.60E+01 TM 09 24217 06/28/95 Ag-110M -0.99E+00 2.78E+00 1.05E+01 TM 09 24217 06/28/95 Ba-140 -2.16E+00 2.16E+00 1.02E+01 TM 09 24217 06/28/95 Be-7 -6.65E+00 1.37E+01 5.16E+01 TH 09 24217 06/28/95 Co-141 -2.33E+00 2.67E+00 9.18E+00 TM 09 24217 06/28/95 Ce-144 7.09E+00 1.03E+01 3.33E+01 l TM 09 24217 06/28/95 Co-57 -0.27E+00 1.31E+00 4.37E+00 1 TM 09 24217 06/28/95 Co-58 2.33E+00 1.72E+00 5.59E+00 TM 09 24217 06/28/95 Co-60 -3.58E+00 2.03E+00 8.99E+00 TM 09 24217 06/28/95 Cr-51 9.67E+00 1.74E+01 6.00E+01 TM 09 24217 06/28/95 Cs-134 1.54E+00 3.30E+00 9.94E+00 TM 09 24217 06/28/95 Cs-137 0.85E+00 1.70E+00 6.26E+00 TM 09 24217 06/28/95 Fe-59 -4.15E+00 6.54E+00 2.60E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l 1

I

I 1

4-Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC

_ " *___8T^_____E8"___ENDgATENUCg{gE,,_,__((((gg{,,_,(({[{g{,,,(({[gg{,,

j TM 09 24217 06/28/95 I-131 -2.18E-03 4.52E-02 0.21E+00 l TM 09 24217 06/28/95 K-40 1.33E+03 7.47E+01 .7.78E+01

J TM 09 24217 06/28/95 Mn-54 -2.36E+00 1.57E+00 6.33E+00 ;

, TM 09 24217 06/28/95 Ru-103 0.93E+00 1.65E+00 5.85E+00 !

TM 09 24217 06/28/95 Ru-106 8.99E+00 1.48E+01 5.41E+01 TM 09 24217 06/28/95 Sb-124 0.68E+00 3.95E+00 1.56E+01

- TM 09 24217 06/28/95 Se-75 -1.16E+00 2.06E+00 7.12E+00 <

TM 09 24217 06/28/95 En-65 -2.71E+00 4.89E+00 1.85E+01 TM 09 24217 06/28/95 Er-95 -2.05E+00 3.09E+00 1.17E+01 TM 09 24419 07/12/95 AcTh228 0.43E+00 4.73E+00 1.68E+01 TM 09 24419 07/12/95 Ag-110M 4.14E+00 1.76E+00 5.52E+00 ,

TM 09 24419 07/12/95 Ba-140 2.75E+00 2.07E+00 6.96E+00 (

TM 09 24419 07/12/95- Be-7 1.74E+01 9.87E+00 3.22E+01 ;

i TM 09 24419 07/12/95 Co-141 -0.14E+00 1.91E+00 6.29E+00 1

TM 09 24419 07/12/95 Co-144 -5.93E+00 6.48E+00 2.16E+01 TM 09 24419 07/12/95 Co-57 0.57E+00 0.82E+00 2.63E+00 TM 09 24419 07/12/95 Co-58 -1.75E+00 1.20E+00 4.47E+00 TM 09 24419 07/12/95 Co-60 1.41E+00 1.20E+00 4.19E+00 TM' 09 24419 07/12/95 Cr-51 -1.27E+01 1.18E+01 4.23E+01 TM 09 24419 07/12/95 Cs-134 -0.81E+00 1.18E+00 4.39E+00 TM 09 24419 07/12/95 Cs-137 1.17E+00 1.34E+00 4.71E+00 TM 09 24419 07/12/95 Fe-59 0.46E+00 3.88E+00 1.44E+01 TM 09 24419 07/12/95 I-131 1.19E-02 5.84E-02 0.24E+00 TM 09 24419 07/12/95 K-40 1.33E+03 5.13E+01 5.94E+01

j TM 09 24419 07/12/95 Mn-54 -0.79E+00 1.02E+00 3.72E+00 i TM 09 24419 07/12/95 Ru-103 -0.56E+00 1.20E+00 4.35E+00 TM 09 24419 07/12/95 Ru-106 -9.89E+00 1.11E+01 4.21E+01 1.17E+01 TM 09 24419 07/12/95 Sb-124 -3.06E+00 2.89E+00

TM 09 24419 07/12/95 Se-75 -0.41E+00 1.26E+00 4.22E+00

, TM 09 24419 07/12/95 En-65 1.87E+00 2.89E+00 1.00E+01

TM 09 24419 07/12/95 Er-95 -1.42E+00 2.13E+00 7.63E+00 l TM 09 24692 07/26/95 AcTh228 1.09E+01 7.41E+00 2.45E+01 4

TM 09 24692 07/26/95 Ag-110M -1.26E+00 2.69E+00 1.03E+01 TM 09 24692 07/26/95 Ba-140 2.41E+00 3.51E+00 1.30E+01

. TM 09 24692 07/26/95 Be-7 1.36E+01 1.83E+01 6.54E+01 i TM 09 24692 07/26/95 Co-141 0.86E+00 3.34E+00 1.15E+01 TM 09 24692 07/26/95 Ce-144 -3.96E+0C 1.28E+01 4.46E+01 TM 09 24692 07/26/95 Co-57 1.33E+00 1.63E+00 5.49E+00 Co-58 3.24E+00 2.20E+00 7.29E+00 TM 09 24692 07/26/95 TM 09 24692 07/26/95 Co-60 2.66E+00 2.52E+00 8.67E+00

. TM 09 24692 07/26/95 Cr-51 3.48E+01 1.76E+01 5.66E+01 TM 09 24692 07/26/95 Cs-134 -0.90E+00 1.77E+00 6.43E+00 TM 09 24692 07/26/95 Cs-137 2.28E+00 1.97E+00 6.47E+00 l TM 09 24692 07/26/95 Fe-59 -1.41E+00 5.73E+00 2.17E+01 .

! TM 09 24692 07/26/95 I-131 0.10E+00 6.41E-02 0.19E+00 (

TM 09 24692 07/26/95 K-40 1.31E+03 7.86E+01 8.56E+01

TM 09 24692 07/26/95 Mn-54 -2.02E+00 1.76E+00 7.09E+00 TM 09 24692 07/26/95 Ru-103 -3.40E+00 2.32E+00 9.22E+00 TM 09 24692 07/26/95 Ru-106 -3.89E+00 1.65E+01 5.95E+01 TM 09 24692 07/25/95 Sb-124 4.10E+00 4.71E+00 1.72E+01 TM 09' 24692 07/26/95 Se-75 3.25E+00 2.47E+00 8.24E+00 TM 09 24692 07/26/95 En-65 0.77E+00 4.76E+00 1.79E+01 TM 09 24692 07/26/95 Er-95 2.11E+00 3.42E+00 1.21r'01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

--v - - - _ _ . . - - , . .-

.- _ . - - . . . . . - ~- - - . - . .. _ - .~ - . - ~-.

I i

l seabrook Station Radiological Environmental Data.

(January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pcl/kg) (pci/kg) (pci/kg)

TM 09 24865 08/09/95 AcTh228 -1.17E+00 6.26E+00 2.31E+01 TM 09 24865- 08/09/95 Ag-110M 1.94E+00 2.33E+00 8.09E+00 TM 09 24865 08/09/95 Ba-140 -0.62E+00 2.83E+00 1.12E+01 ,

TM 09 24865 08/09/95 Be-7 -3.06E+00 1.18E+01 4.37E+01 '

TM 09 24865 08/09/95 Co-141 3.40E+00 2.48E+00 7.87E+00 l TM 09 24865 08/09/95 Co-144 -1.60E+01 8.50E+00 2.98E+01 TM 09 24865 08/09/95 Co-57 0.59E+00 1.13E+00 3.66E+00 TM 09 24865 08/09/95 Co-58 -1.34E+00 1.48E+00 5.68E+00 TM 09 24865 08/09/95 Co-60 1.20E+00 1.68E+00 6.16E+00 TM 09 24865 08/09/95 Cr-51 -8.09E+00 1.50E+01 5.42E+01 TM- 09 24865 08/09/95 Cs-134 0.71E+00 1.51E+00 5.50E+00 TM 09 24865 08/09/95 Co-137 3.41E+00 1.82E+00 6.06E+00 TM 09 24865 08/09/95 Fe-59 -1.60E+00 6.23E+00 2.38E+01 TM 09 24865 08/09/95 I-131 3.02E-02 6.76E-02 0.26E+00 TM 09 24865 08/09/95 K-40 1.33E+03 6.88E+01 8.21E+01

TM 09 24865 08/09/95 Mn-54 1.84E+00 1.37E+00 4.45E+00 TM 09 24865 08/09/95 Ru-103 0.27E+00 1.79E+00 6.37E+00 TM 09 24865 08/09/95 Ru-106 1.01E+01 1.33E+01 4.80E+01 !

TM 09 24865 08/09/95 sb-124 -8.99E+00 3.60E+00 1.75E+01 1 TM 09 24865 08/09/95 Se-75 -1.47E+00 1.65E+00 5.80E+00 ;

TM 09 24865 08/09/95 En-65 -6.72E+00 3.71E+00 1.53E+01 1 TM 09 24865 08/09/95 Er-95 3.02E+00 2.94E+00 9.76E+00 )

TM 09 25109 08/23/95 AcTh228 2.09E+00 7.36E+00 2.59E+01 TM - 09 25109 08/23/95 Ag-110M 3.36E+00 2.52E+00 8.20E+00 TM 09 25109 08/23/95 Ba-140 1.33E+00 2.90E+00 1.07E+01 TM 09 25109 08/23/95 Be-7 -1.30E+01 1.38E+01 5.32E+01 TM 09 25109 08/23/95 Co-141 -3.28E+00 2.64E+00 9.19E+00 TM 09 25109 08/23/95 Co-144 3.04E+00 9.91E+00 3.27E+01 TM 09 25109 08/23/95 Co-57 0.79E+00 1.34E+00 4.37E+00 TM 09 25109 08/23/95 Co-58 1.24E+00 1.70E+00 5.85E+00 TM 09 25109 08/23/95 Co-60 0.25E+00 1.57E+00 6.13E+00 TM 09 25109 08/23/95 Cr-51 -4.84E+00 1.57E+01 5.69E+01 TM 09 25109 08/23/95 Cs-134 0.70E+00 1.42E+00 5.10E+00 TM 09 25109 08/23/95 Cs-137 1.35E+00 2.08E+00 7.51E+00

. TM 09 25109 08/23/95 Fe-59 3.16E+00 6.41E+00 2.31E+01 TM 09 25109 08/23/95 I-131 -3.86E-02 3.08E-02 0.20E+00 j TM 09 25109 08/23/95 K-40 1.37E+03 7.78E+01 9.06E+01

i TM 09 25109 08/23/95 Mn-54 0.32E+00 1.39E+00 5.05E+00

. TM 09 25109 08/23/95 Ru-103 -1.42E+00 1.74E+00 6.66E+00 l TM 09 25109 08/23/95 Ru-106 -4.76E+00 1.72E+01 6.55E+01 TM 09 25109 08/23/95 Sb-124 ~2.57E+00 3.47E+00 1.54E+01 6.09E+00 l TM 09 25109 08/23/95 Se-75 2.22E+00 1.89E+00

TM 09 25109 08/23/95 En-65 -0.70E+00 4.46E+00 1.67E+01 TM 09 25109 08/23/95 Zr-95 -2.93E+00 3.06E+00 1.26E+01 l

TM 09 25295 09/06/95 AcTh228 1.94E+00 6.86E+00 2.48E+01 TM 09 25295 09/06/95 Ag-110M -0.37E+00 2.55E+00 9.49E+00 TM 09 25295 09/06/95 Ba-140 -4.80E+00 2.47E+00 1.20E+01 TM 09 25295 09/06/95 Be-7 1.05E+01 1.19E+01 4.11E+01 TM 09 25295 09/06/95 Co-141 -1.85E+00 2.55E+00 8.73E+00 TM 09 25295 09/06/95 Co-144 -7.60E+00 9.68E+00 3.29E+01

, TM 09 25295 09/06/95 Co-57 2.08E+00 1.21E+00 3.80E+00 TM 09 25295 09/06/95 Co-58 0.63E+00 1.29E+00 4.62E+00 TM 09 25295 09/06/95 Co-60 0.37E+00 1.65E+00 6.45E+00

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

1 i

I

.- -. . . . . - - . - . . . ~. ,_-. - --. - .- .-- -

Seabrook Station Radiological Environmental Data (January - December 1995) 1 SAMPLE CONC. STD DEV. MDC l TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (pci/kg) (pci/kg) I TM 09 25295 09/06/95 Cr-51 -1.57E+01 1.65E+01 6.09E+01 TM 09 25295 09/06/95 Cs-134 -2.58E+00 1.58E+00 '6.45E+00 i TM 09 25295 09/06/95 Co-137 5.11E+00 1.78E+00 5.40E+00 TM 09 25295 09/06/95 Fe-59 3.21E+00 5.73E+00 2.11E+01 TM 09 25295 09/06/95 I-131 3.67E-02 7.313-02 0.27E+00

) TM 09 25295 09/06/95 K-40 1.41E+03 7.57E+01 8.61E+01

TM 09 25295 09/06/95 Mn-54 -0.98E+00 1.60E+00 6.02E+00 4 i TM 09 25295 09/06/95 Ru-103 0.87E+00 1.69E+00 5.98E+00 TM 09 25295 09/06/95 Ru-106 -1.67E+01 1.72E+01 6.75E+01 TM 09 25295 09/06/95 Sb-124 -1.03E+00 3.98E+00 1.63E+01 TM 09 25295 09/06/95 Se-75 2.02E+00 1.83E+00 5.92E+00 <

TM 09 25295 09/06/95 Zn-65 -0.18E+00 4.38E+00 1.62E+01

TM 09 25295 09/06/95 Er-95 3.28E+00 2.70E+00 8.89E+00 t

j TM 09 25544 09/20/95 AcTh228 -2.73E+00 7.67E+00 2.85E+01 ]

1 TM 09 -25544 09/20/95 Ag-110M 2.79E+00 2.64E+00 8.84E+00 1 TM 09 25544 09/20/95 Ba-140 -2.23E+00 2.43E+00 1.13E+01 l TM 09 25544 09/20/95 Be-7 4.32E+00 1.40E+01 5.08E+01 TM 09 25544 09/20/95 Co-141 2.91E+00 2.83E+00 9.11E+00 i TM 09 25544 09/20/95 Co-144 -1.07E+01 1.11E+01 3.83E+01 TM 09 25544 09/20/95 Co-57 1.67E+00 1.43E+00 4.58E+00 TM 09 '25544 09/20/95 Co-58 -1.29E+00 2.07E+00 7.83E+00 TM 09 25544 09/20/95 Co-60 0.46E+00 2.58E+00 9.61E+00 TM 09 25544 09/20/95 Cr-51 1.50E+01 1.761+01 6.03E+01

! TM 09 25544 09/20/95 Co-134 -2.35E+00 1.85E+00 7.35E+00 TM 09 25544 09/20/95 Cs-137 6.37E+00 3.03E+00 1.05E+01 TM 09 25544 09/20/95 Fe-59 1.87E+00 6.97E+00 2.57E+01 TM 09 25544 09/20/95 I-131 -3.74E-03 5.56E-02 0.25E+00

TM 09 25544. 09/20/95 K-40 1.51E+03 8.71E+01 9.40E+01

TM 09 25544 09/20/95 Mn-54 1.68E+00 1.49E+00 4.99E+00 l TM 09 25544 09/20/95 Ru-103 -2.20E+00 1.90E+00 7.50E+00 TM 09 25544 09/20/95 Ru-106 1.28E+01 1.81E+01 6.56E+01

, MNi 09 25544 09/20/95 Sb-124 -2.85E+00 3.59E+00 1.66E+01 TM 09 25544 09/20/95 Se-75 -0.47E+00 2.04E+00 7.08E+00 l 2.02E+01 TM 09 25544 09/20/95 En-65 -4.80E+00 5.11E+00 TM 09 25544 09/20/95 Zr-95 6.71E+00 3.42E+00 1.11E+01

! TM 09 25757 10/04/95 AcTh228 -3.45E+00 5.08E+00 1.89E+01

. TM 09 25757 10/04/95 Ag-110M 2.64E+00 1.65E+00 5.40E+00 TM 09 25757 10/04/95 Ba-140 -0.37E+00 2.21E+00 8.42E+00

TM 09 25757 10/04/95 Be-7 1.35E+01 1.02E+01 3.39E+01

. TM 09 25757 10/04/95 Co-141 -1.91E+00 1.94E+00 6.52E+00 TM 09 25757 10/04/95 Co-144 -3.93E+00 7.43E+00 2.46E+01 TM 09 25757 10/04/95 Co-57 0.95E+00 0.92E+00 2.94E+00 TM 09 25757 10/04/95 Co-C8 -0.38E+00 1.22E+00 4.39E+00 TM 09 25757 10/04/95 Co-60 -1.64E+00 1.39E+00 5.70E+00 i TM 09 25757 10/04/95 Cr-51 1.41E+01 1.22E+01 4.09E+01 TM 09 25757 10/04/95 Cs-134 0.42E+00 2.16E+00 6.58E+00 TM 09 25757 10/04/95 Cs-137 2.60E+00 1.44E+00 5.00E+00 l

TM 09 25757 10/04/95 Fe-59 -0.47E+00 5.01E+00 1.86E+01 TM 09 25757 10/04/95 I-131 3.04E-03 4.48E-02 0.19E+00 TM 09 25757 10/04/95 K-40 1.46E+03 5.94E+01 6.39E+01

TM 09 25757 10/04/95 Mn-54 -1.31E+00 1.19E+00- 4.46E+00 TM 09 25757 10/04/95 Ru-103 -1.78E+00 1.30E+00 4.92E+00 TM 09 25757 10/04/95 Ru-106 -0.20E+00 1.17E+01 4.33E+01 l

Radioactivity datocted (i.e., Concentration is > 3 Std. Deviations).

l

... ~ . --

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pC1/kg) (pci/kg)

TM 09 25757 10/04/95 Sb-124 0.54E+00 2.01E+00 7.96E+00 TM 09 25757 10/04/95 Se-75 6.96E-02 1.44E+00 4.79E+00 TM 09 25757 10/04/95 Zn-65 1.52E+00 3.14E+00 1.11E+01 TM 09 25757 10/04/95 Zr-95 1.99E+00 2.18E+00 7.26E+00 TM 09 26355 11/01/95 AcTh228 -5.53E+00 5.61E+00 2.14E+01

, TM 09 26355 11/01/95 Ag-110M -2.40E+00 2.15E+00 8.27E+00

{ TM 09 26355 11/01/95 Ba-140 -3.41E+00 2.89E+00 1.21E+01 i

TM 09 26355 11/01/95 Be-7 1.80E+01 1.24E+01 4.09E+01 1 TM 09 26355 11/01/95 Co-141 5.65E+00 2.44E+00 7.50E+00

TM 09 26355 11/01/95 Ce-144 7.68E-02 8.51E+00 2.79E+01 TM 09 26355 11/01/95 Co-57 -0.37E+00 1.09E+00 3.59E+00 4 TM 09 26355 11/01/95 Co-58 -2.78E+00 1.40E+00 5.59E+00 TM 09 26355 11/01/95 Co-60 -0.82E+00 1.61E+00 6.37E+00 TM 09 26355 11/01/95 Cr-51 -1.17E+00 1.47E+01 5.16E+01 TM 09 26355 11/01/95 Cs-134 -5.07E+00 3.22E+00 1.27E+01 TM 09 26355 11/01/95 Cs-137 0.84E+00 1.96E+00 7.04E+00 TM 09 26355 11/01/95 Fe-59 1.36E+00 5.69E+00 2.09E+01 TM 09 26355 11/01/95 I-131 0.10E+00 0.10E+00 0.32E+00 TM 09 26355 11/01/95 K-40 1.50E+03 6.63E+01 7.77E+01

TM 09 26355 11/01/95 Mn-54 -2.04E+00 1.33E+00 5.16E+00 TM 09 26355 11/01/95 Ru-103 0.83E+00 1.65E+00 5.73E+00 TM 09 26355 11/01/95 Ru-106 7.13E+00 1.09E+01 3.94E+01

, TM 09 26355 11/01/95 Sb-124 -7.25E+00 3.34E+00 1.55E+01 TM 09 26355 11/01/95 Se-75 -1.84E+00 1.60E+00 5.60E+00 4 TM 09 26355 11/01/95 Zn-65 -0.46E+00 4.26E+00 1.53E+01 TM 09 26355 11/01/95 Zr-95 1.03E+00 2.56E+00 8.83E+00 TM 09 26780 11/30/95 AcTh228 0.96E+00 6.57E+00 2.40E+01 TM 09 26780 11/30/95 Ag-110M 1.67E+00 2.52E+00 8.88E+00 1 TM 09 26780 11/30/95 Ba-140 1.25E+00 2.34E+00 8.84E+00 i TM 09 26780 11/30/95 Be-7 3.39E+00 1.50E+01 5.32E+01

. TM 09 26780 11/30/95 Co-141 -3.13E+00 2.55E+00 8.78E+00 1

TM 09 26780 11/30/95 Co-144 -4.12E+00 9.93E+00 3.33E+01 TM 09 26780 11/30/95 Co-57 0.38E+00 1.30E+00 4.24E+00 1.73E+00 6.15E+00 TM 09 26780 11/30/95 Co-58 0.24E+00 TM 09 26780 11/30/95 Co-60 0.68E+00 1.76E+00 6.70E+00 TM 09 26780 11/30/95 Cr-51 5.84E+00 1.46E+01 5.09E+01 TM 09 26780 11/30/95 Cs-134 1.26E+00 2.76E+00 8.37E+00 TM 09 26780 11/30/95 Cs-137 3.30E+00 1.89E+00 6.35E+00 6.22E+00 2.20E+01 TM 09 26780 11/30/95 Fe-59 2.71E+00 TM 09 26780 11/30/95 I-131 3.12E-02 4.24E-02 0.16E+00 TM 09 26780 11/30/95 K-40 1.46E+03 7.71E+01 9.07E+01

TM 09 26780 11/30/95 Mn-54 -1.81E+00 1.40E+00 5.61E+00 TM 09 26780 11/30/95 Ru-103 1.07E+00 1.70E+00 5.93E+00 TM 09 26780 11/30/95 Ru-106 -1.82E+01 1.65E+01 6.54E+01 TM 09 26780 11/30/95 Sb-124 -4.99E+00 3.60E+00 1.66E+01 TM 09 26780 11/30/95 Se-75 2.29E+00 2.08E+00 6.68E+00 TM 09 26780 11/30/95 Zn-65 -3.38E+00 4.88E+00 1.85E+01 TM 09 26780 11/30/95 Zr-95 -0.97E+00 3.18E+00 1.16E+01 TM 09 27203 12/27/95 AcTh228 3.73E+00 4.56E+00 1.56E+01 TM 09 27203 12/27/95 Ag-110M -0.72E+00 1.83E+00 6.62E+00 TM 09 27203 12/27/95, Ba-140 -0.42E+00 2.50E+00 9.50E+00 TM 09 27203 12/27/95 Be-7 -2.68E+00 9.89E+00 3.54E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pC1/kg) (pC1/kg)

TM 09 27203 12/27/95 Co-141 -2.51E+00 2.00E+00 6.75E+00 TM 09 27203 12/27/95 Co-144 -5.33E+00 6.66E+00. 2.21E+01

TM 09 27203 12/27/95 Co-57 -0.63E+00 0.87E+00 2.87E+00 TM 09 27203 12/27/95 Co-58 1.44E+00 1.25E+00 4.07E+00 TM 09 27203 12/27/95 Co-60 -0.62E+00 1.18E+00 4.62E+00 3 TM 09 27203 12/27/95 Cr-51 -1.54E+01 1.18E+01 4.29E+01 TM 09 27203 12/27/95 Co-134 -1.68E+00 1.08E+00 4.19E+00 TM 09 27203 12/27/95 Co-137 2.45E+00 1.40E+00 4.99E+00 TM 09 27203 12/27/95 Fe-59 6.98E+00 4.32E+00 1.45E+01 '

TM 09 27203 12/27/95 I-131 -7.44E-02 4.45E-02 0.31E+00 4 TM 09 27203 12/27/95 K-40 1.39E+03 5.16E+01 5.02E+01

l TM 09 27203 12/27/95 Mn-54 -2.53E+00 1.01E+00 4.02E+00 4

TM 09 27203 12/27/95 Ru-103 -1.97E+00 1.37E+00 5.10E+00

, TM 09 27203 12/27/95 Ru-106 -7.61E+00 1.03E+01 3.92E+01

! TM 09 27203 12/27/95 Sb-124 1.56E+00 3.08E+00 1.11E+01 TM 09 27203 12/27/95 Se-75 -0.31E+00 1.28E+00 4.28E+00

TM 09 27203 12/27/95 En-65 -5.32E+00 3.09E+00 1.19E+01 TM 09 27203 12/27/95 Zr-95 -3.10E+00 2.08E+00 7.78E+00 t

l l

I l

i J

I l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). l l

l

)

i seabrook Station Radiological Environmental Data (January - December 1995) ,

l SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/kg) (pci/kg) (pci/kg) l TM 15 21088 01/11/95 AcTh228 -0.47E+00 5.41E+00 1.93E+01 4 TM 15 21088 01/11/95 Ag-110M -1.11E+00 1.58E+00 5.16E+00 TM 15 21088 01/11/95 Ba-140 1.99E+00 1.56E+00 4.36E+00 TM 15 21088 01/11/95 Be-7 -3.965+00 1.13E+01 3.60E+01 3

TM 15 21088 01/11/95 co-141 -1.74E+00 2.40E+00 8.48E+00 TM 15 21088 01/11/95 Co-144 -3.48E+00 7.32E+00 2.18E+01 TM 15 21088 01/11/95 Co-57 1.15E+00 0.99E+00 2.85E+00 TM 15 21088 01/11/95 Co-58 -1.86E+00 1.25E+00 4.23E+00

) TM 15 21088 .01/11/95 co-60 0.00E+00 1.51E+00 4.96E+00 TM 15 21088 01/11/95 Cr-51 -1.93E+01 1.17E+01 3.86E+01 j TM 15 21088 01/11/95 Cs-134 0.77E+00 1.26E+00 -4.26E+00 TM 15 21088 01/11/95 Cs-137 4.32E+00 1.13E+00 2.31E+00

TM 15 21088 01/11/95 Fe-59 3.62E+00 3.18E+00 9.36E+00 4 TM 15 21088 01/11/95 I-131 5.84E-02 0.13E+00 0.50E+00 TM 15 21088 01/11/95 K-40 1.68E+03 5.97E+01 6.82E+01 *

. TM 15 21088 01/11/95 Mn-54 0.46E+00 1.25E+00 3.86E+00 TM 15 21088 01/11/95 Ru-103 -2.22E+00 1.33E+00 4.45E+00 i TM 15 21088 01/11/95 Ru-106 9.80E+00 1.07E+01 3.20E+01 TM 15 21088 01/11/95 Sb-124 1.05E+00 2.57E+00 8.10E+00 l

TM 15 21088 01/11/95 So-75 1.44E+00 1.40E+00 3.99E+00 1 l 3.45E+00 1.11E+01

TM 15 21088 01/11/95 En-65 4.91E+00 TM 15 21088 01/11/95 Er-95 -5.55E+00 2.05E+00 7.37E+00 l TM 15 21573 02/08/95 AcTh228 5.85E+00 3.15E+00 1.01E+01 TM 15 21573 02/08/95 Ag-110M -0.61E+00 1.32E+00 4.63E+00

. TM 15 21573 02/08/95 Ba-140 -1.91E+00 1.72E+00 6.67E+00 TM 15 21573 02/08/95 Be-7 -1.04E+01 8.13E+00 2.99E+01 l 1.82E+00 6.19E+00 TM 15 21573 02/08/95 Co-141 -1.45E+00 TM. 15 21573 02/08/95 Co-144 7.07E+00 6.11E+00 2.02E+rt Co-57 0.19E+00 0.78E+00 2.61E+);

i TM 15 21573 02/08/95 3.43E+00 i TM 15 21573 02/08/95 Co-58 6.58E-02 0.99E+00 TM 15 21573 02/08/95 Co-60 -1.44E+00 1.06E+00 3.91E+00 TM 15 21573 02/08/95 Cr-51 -4.38E+00 8.94E+00 3.08E+01

[ TM 15 21573 02/08/95 Cs-134 -2.20E+00 0.80E+00 2.86E+00

TM 15 21573 02/08/95 Cs-137 3.80E+00 1.19E+00 4.13E+00 *

! TM 15 21573 02/08/95 Fe-59 4.53E+00 3.14E+00 1.01E+01

TM 15 21573 02/08/95 I-131 -5.96E-02 4.84E-02 0.29E+00

TM 15 21573 02/08/95 K-40 1.76E+03 4.00E+01 3.80E+01 *

! TM 15 21573 02/08/95 Mn-54 -0.96E+00 0.87E+00 3.14E+00 Th 15 21573 02/08/95 Ru-103 1.86E-02 1.08E+00 3.83F+00 TM 15 21573 02/08/95 Ru-106 -3.67E+00 7.36E+00 2.51E+01 TM. 15 21573 02/08/95 Sb-124 0.303+00 2.00E+00 7.33E+00

. TM 15 21573 02/08/95 Se-75 0.21E+00 1.13E+00 3.81E+00 TM 15 21573 02/08/95 En-65 -3.36E+00 2.39E+00 8.84E+00

. TM 15 21573 02/08/95 Er-95 2.07E+00 1.79E+00 5.97E+00 i j

TM 15 22009 03/08/95 AcTh228 3.80E+00 4.07E+00 1.38E+01 TM 15 22009 03/08/95 Ag-110M -0.53E+00 1.58E+00 5.63E+00 i

TM 15 22009 03/08/95 Ba-140 -0.23E+00 1.65E+00 6.08E+00 TM 15 22009 03/08/95 Be-7 1.22E+00 8.36E+00 2.90E+01 TM 15 22009 03/08/95 Co-141 0.97E+00 1.50E+00 4.80E+00 i

TM 15 22009 03/08/95 Co-144 2.47E+00 5.94E+00 1.91E+01 j TM 15 . 22009 03/08/95 Co-57 0.68E+00 0.72E+00 2.31E+00 TM 15 22009 03/08/95 Co-58 1.67E+00 1.03E+00 3.27E+00 TM 15 22009 03/08/95 Co-60 1.77E+00 1.31E+00 4.47E+00 4 .

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

3 i

.- . . - _ . . - - - - . - - ~ . _ _ - . -

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TM 15- 22009 03/08/95 Cr-51 -2.62E+00 9.54E+00 3.31E+01 TM 15 22009 03/08/95 Cs-134 0.47E+00 1.11E+00 3.94E+00 TM 15 22009 03/08/95 Cs-137 2.85E+00 0.87E+00 2.14E+00

TM 15 22009 03/08/95 Fe-59 1.15E+00 3.58E+00 1.28E+01 TM 15 22009 03/08/95 I-131 -6.13E-02 7.77E-02 0.42E+00 TM 15 22009 03/08/95 K-40 1.55E+03 4.80E+01 5.68E+01

TM 15 22009 03/08/95 Mn-54 2.27E-02 1.00E+00 3.43E+00 TM 15 22009 03/08/95 Ru-103 -3.00E+00 1.01E+00 3.90E+00 TM 15 22009 03/08/95 Ru-106 -0.36E+00 9.15E+00 3.33E+01 TM 15 22009 03/08/95 8b-124 1.44E+00 2.04E+00 7.24E+00 TM 15 22009 03/08/95 So-75 -0.65E+00 1.13E+00 3.77E+00 TM 15 22009 03/08/95 En-65 -4.34E+00 2.75E+00 1.02E+01 l

~TM 15 22009 0?/s0/*; Er-95 1.54E+00 1.58E+00 5.21E+00 j TM 15 22461 04/05/95 AcTh228 3.94E+00 6.56E+00 2.32E+01 TM 15 22461 04/05/95 Ag-110M 0.17E+00 2.44E+00 8.84E+00 TM 15 22461 04/05/95 Ba-140 4.94E+00 2.46E+00 7.58E+00

.TM' 15 22461 04/05/95 Be-7 -2.92E+00 1.26E+01 4.31E+01 TM 15 22461 04/05/95 Co-141 2.80E+00 2.53E+00 8.42E+00 TM 15 22461 04/05/95 Co-144 1.23E+01 1.05E+01 3.48E+01 TM 15 22461 04/05/95 Co-57 0.20E+00 1.36E+00 4.59E+00 TM 15 22461 04/05/95 Co-58 -1.44E+00 1.64E+00 6.06E+00 TH 15 22461 04/05/95 Co-60 -1.15E+00 2.04E+00 7.54E+00 TM 15 22461 04/05/95 Cr-51 0.00E+00 1.44E+01 5.15E+01 TM 15 22461 04/05/95 Co-134 1.27E+00 1.55E+00 5.25E+00 TM 15 22461 04/05/95 Cs-137 2.70E+00 1.86E+00 6.15E+00 TM 15 22461 04/05/95 Fe-59 3.57E+00 5.88E+00 2.04E+01 TM 15 22461 04/05/95 I-131 4.27E-03 5.28E-02 0.22E+00 TM 15 22461 04/05/95 K-40 1.35E+03 6.18E+01 9.73E+01

TM 15 22461 04/05/95 Mn-54 -1.075+00 1.55E+00 5.68E+00 TM 15 22461 04/05/95 Ru-103 1.08E+00 1.64E+00 5.41E+00 TM 15 22461 04/05/95 Ru-106 -8.31E+00 1.51E+01 5.38E+01 TM 15 22461 04/05/95 Sb-124 -2.26E+00 4.53E+00 1.68E+01 TM 15 22461 04/05/95 Se-75 1.94E+00 1.95E+00 6.75E+00 TM 15 22461 04/05/95 En-65 -2.53E+00 3.99E+00 1.42E+01 )

TM 15 22461 04/05/95 Er-95 -1.64E+00 2.84E+00 1.03E+01 ,

TM 15 22787 04/19/95 AcTh228 1.04E+01 5.90E+00 1.75E+01 TM 15 22787 04/19/95 Ag-110M 0.40E+00 1.80E+00 6.38E+00 TM 15 22787 04/19/95 Ba-140 1.18E+00 1.76E+00 6.25E+00

. TM 15 22787 04/19/95 Be-7 4.58E+00 1.19E+01 4.26E+01 TM 15 22787 04/19/95 Co-141 5.36E+00 2.34E+00 7.26E+00 f Co-144 9.01E+00 8.30E+00 2.64E+01

TM- 15 22787 .04/19/95 TM- 15 22787 04/19/95 Co-57 0.30E+00 1.03E+00 3.35E+00 l

TM 15' 22787 04/19/95 Co-58 -8.49E-02 1.11E+00 3.94E+00

- TM 15 22787 04/19/95 Co-60 0.32E+00 1.59E+00 5.84E+00

. TM 15 22787 04/19/95 Cr-51 2.50E+01 1.39E+01 4.56E+01 TM 15 22787 04/19/95 Cs-134 -0.58E+00 2.89E+00 1.05E+01 !

.. TM 15 22787 04/19/95 Cs-137 3.44E+00 1.72E+00 5.65E+00 l f

TM 15 22787 04/19/95 Fe-59 4.43E+00 4.67E+00 1.64E+01 i

TM 15 22787 04/19/95 I-131 -2.38E-02 3.72E-02 0.19E+00 j i TM 15 22787 04/19/95 K-40 1.45E+03 5.66E+01 7.16E+01

j

. TM 15 22787 04/19/95 Kn-54 -1.25E+00 1.31E+00 4.89E+00 !

TM 15 22787 04/19/95 Ru-103 -1.63E+00 1.48E+00 5.61E+00 TM 15 22787 04/19/95 Ru-106 1.30E+01 1.10E+01 3.83E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

L

_ . _ . . _ . . , _ _ - _ . ~. _ -

Seabrook Station Radiological Environmental Data (January - December 1995) j SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pC1/kg) (pci/kg)

TM 15 22787 04/19/95 8b-124 1.15E+00 2.51E+00 9.11E+00 TM 15 22787 04/19/95 Se-75 0.71E+00 1.64E+00 5.59E+00 TM 15 22787 04/19/00 En-65 -8.28E+00 3.48E+00 1.37E+01 TM 15 22787 04/19/95 Zr-95 5.42E+00 2.21E+00 6.62E+00 TM 15 23069 05/03/9S AcTh228 5.25E+00 5.17E+00 1.76E+01 TM 15 23069 05/03/95 Ag-110M -2.01E+00 2.22E+00 8.35E+00 TM 15 23069 05/03/95 Ba-140 3.68E+00 2.32E+00 7.71E+00 TM 15 23069 05/03/95 Be-7. 1.17E+01 1.21E+01 4.25E+01 TM 15 23069 05/03/95 Co-141 1.03E+00 2.70E+00 9.14E+00 TM 15 23069 05/03/95 Co-144 -1.90E+00 1.00E+01 3.45E+01 TM 15 23069 05/03/95 Co-57 0.25E+00 1.32E+00 4.50E+00 TM 15 23069 05/03/95 Co-58 1.08E+00 1.50E+00 5.20E+00 TM- 15 23069 05/03/95 Co-60 -1.73E+00 1.83E+00 7.07E+00 TM 15 23069 05/03/95 Cr-51 3.12E+00 1.29E+01 4.48E+01 TM 15 23069 05/03/95 Cs-134 -0.54E+00 2.13E+00 7.50E+00 )

HTM 15 23069 05/03/95 Cs-137 1.03E+00 1.44E+00 4.82E+00 TM 15 23069 05/03/95 Fe-59 5.27E+00 4.32E+00 1.42E+01 TM 15 23069 05/03/95 I-131 9.17E-02 0.11E+00 0.39E+00 TM 15 23069 05/03/95 K-40 1.58E+03 6.45E+01 6.63E+01

TM 15 23069 05/03/95 Mn-54 -1.91E+00 1.74E+00 6.51E+00 TM 15 23069 05/03/95 Ru-103 -2.59E+00 1.66E+00 6.48E+00 TM 15 23069 05/03/95 Ru-106 -2.20E+01 1.24E+01 4.70E+01 TM 15 23069 05/03/95 Sb-124 3.41E+00 3.62E+00 1.29E+01 TM 15 23069 05/03/95 So-75 -3.41E+00 1.90E+00 6.92E+00 TM 15 23069 05/03/95 Zn-65 -3.85E+00 4.27E+00 1.63E+01 i TM 15 23069 05/03/95 Er-95 -0.95E+00 2.95E+00 1.07E+01 TM 15 23384 05/17/95 AcTh228 5.88E+00 1.06E+01 3.65E+01 TM 15 23384 05/17/95 Ag-110M 3.74E+00 3.42E+00 1.16E+01 TM 15 23384 05/17/95 Ba-140 -2.30E+00 3.34E+00 1.31E+01 TM 15 23384 05/17/95 Be-7 2.40E+01 2.08E+01 6.99E+01 TM 15 23384 05/17/95 Co-141 -1.02E+00 4.25E+00 1.45E+01 TM 15 23384 05/17/95 Co-144 -8.44E+00 1.61E+01 5.51E+01 TM 15 23384 05/17/95 Co-57 -2.85E+00 2.13E+00 7.40E+00 TM 15 23384 05/17/95 Co-58 -3.96E+00 2.59E+00 9.72E+00 TM 15 23384 05/17/95 Co-60 -2.46E+00 2.47E+00 9.87E+00 TM 15 23384 05/17/95 Cr-51 -3.79E+01 2.36E+01 8.35E+01 TM 15 23384 05/17/95 Cs-134 -0.77E+00 2.50E+00 9.02E+00 TM 15 23384 05/17/95 Co-137 4.35E+00 3.09E+00 1.05E+01 4 TM 15 23384 05/17/95 Fe-59 -9.84E+00 9.06E+00 3.46E+01 TM 15 23384 05/17/95 I-131 -3.23E-02 4.89E-02 0.26E+00 TM 15 23384 05/17/95 K-40 1.57E+03 8.22E+01 1.07E+02

TM 15 23384 05/17/95 Mn-54 -3.42E+00 2.64E+0C 9.74E+00 TM 15 23384 05/17/95 Ru-103 4.55E+00 2.81E+00 9.23E+00 TM 15 23384 05/17/95 Ru-106 4.44E+01 2.23E+01 7.30E+01 TM' 15 23384 05/17/95 sb-124 4.46E+00 5.46E+00 1.93E+01 TM 15 23384 05/17/95 Se-75 -7.60E+00 3.28E+00 1.17E+01 TM 15 23384 05/17/95 En-65 2.58E+00 6.71E+00 2.34E+01

TM 15 23384 05/17/95 Er-95 -4.81E+00 4.70E+00 1.72E+01 3.

TM 15 23643 05/31/95 AcTh228 -2.26E+01 1.05E+01 4.05E+01 TM 15 23643 05/31/95 Ag-110M -1.05E+01 3.96E+00 1.56E+01 TM 15 23643 05/31/95 Ba-140 -2.89E+00 3.44E+00 1.37E+01 TM 15 23643 05/31/95 Be-7 8.67E+00 2.20E+01 7.59E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

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l Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/kg) (pCi/kg) (pci/kg) d TM 15 23643 05/31/95 Co-141 5.03E+00 4.21E+00 1.40E+01 '

Co-144 6.51E+00 1.60E+01 5.39E+01 l TM 15 23643 05/31/95 TM 15 23643 05/31/95 Co-57 3.36E+00 2.23E+00 7.34E+00 TM 15 23643 05/31/95 Co-58 -1.65E+00 2.61E+00 9.43E+00 TM 15 23643 05/31/95 Co-60 -5.78E+00 2.98E+00 1.21E+01 TM 15 23643 05/31/95 Cr-51 -3.55E+01 2.45E+01 8.62E+01 TM 15 23643 05/31/95 Cs-134 -2.98E+00 2.41E+00 9.03E+00 TM 15 23643 05/31/95 Cs-137 2.45E+00 3.05E+00 1.06E+01 TM 15 23643 05/31/95 Fe-59 -5.55E+00 8.62E+00 3.25E+01 i TM 15 23643 05/31/95 I-131 -2.22E-02 3.16E-02 0.19E+00 '

TM 15 23643 05/31/95 K-40 1.52E+03 7.84E+01 9.97E+01

TM 15 23643 05/31/95 Mn-54 2.25E+00 2.56E+00 8.57E+00 TM 15 23643 05/31/95 Ru-103 0.00E+00 2.64E+00 9.28E+00 TM 15 23643 05/31/95 Ru-106 5.43E+01 2.30E+01 7.40E+01 l TM 15 23643 05/31/95 Sb-124 0.00E+00 6.26E+00 2.33E+01 1 TM 15 23643 05/31/95 So-75 -4.51E+00 3.26E+00 1.14E+01 TM 15 23643 05/31/95 Zn-65 1.94E+00 6.50E+00 2.28E+01 TM 15 23643 05/31/95 Zr-95 1.30E+00 5.16E+00 1.77E+01 TM 15 23980 06/14/95 ACTh228 0.15E+00 S.29E+00 1.84E+01 TM 15 23980 06/14/95 Ag-110M -2.64E+00 1.84E+00 6.93E+00 TM 15 23980 06/14/95 Ba-140 1.00E+00 2.02E+00 7.22E+00 TM 15 23980 06/14/95 Be-7 .-6.19E+00 1.03E+01 3.77E+01 TM 15 23980 06/14/95 Co-141 -1.98E+00 2.21E+00 7.38E+00 TM 15 23980 06/14/95 Co-144 4.53E+00 7.70E+00 2.49E+01 TM 15 23980 06/14/95 Co-57 1.08E+00 1.04E+00 3.31E+00 TM 15 23980 06/14/95 Co-58 0.61E+00 1.44E+00 4.92E+00 TM 15 23980 0r/14/95 Co-60 1.11E+00 1.42E+00 4.97E+00 TM 15 23980 06/14/95 Cr-51 0.00E+00 1.21E+01 4.23E+01 TM 15 23980 06/14/95 Cs-134 0.77E+00 1.69E+00 5.72E+00 TM 15 23980 06/14/95 Cs-137 3.59E+00 1.57E+00 5.17E+00 TM 15 23980 06/14/95 Fe-59 8.75E+00 4.33E+00 1.37E+01 TM 15 23980 06/14/95 I-131 -4.61E-02 5.03E-02 0.28E+00 TM 15 23980 06/14/95 K-40 1.66E+03 6.33E+01 6.72E+01

TM 15 23980 06/14/95 Mn-54 1.83E+00 1.35E+00 4.35E+00 TM 15 23980 06/14/95 Ru-103 -2.75E+00 1.51E+00 5.70E+00 TM 15 23980 06/14/95 Ru-106 2.84E+00 1.14E+01 4.18E+01 TM 15 23980 06/14/95 Sb-124 0.99E+00 2.13E+00 8.01E+00 TM 15 23980 06/14/95 So-75 0.99E+00 1.39E+00 4.52E+00 TM 15 23980 06/14/95 Zn-65 -7.71E+00 3.93E+00 1.52E+01 TM 15 23980 06/14/95 Zr-95 1.81E+00 2.64E+00 9.43E+00 TM 15 24218 06/28/95 AcTh228 -2.00E+00 6.47E+00 2.45E+01 TM 15 24218 06/28/95 Ag-110M 8.21E-02 2.48E+00 9.16E+00 TM 15 24218 06/28/95 Ba-140 -2.05E+00 3.07E+00 1.28E+01 TM 15 24218 06/28/95 Be-7 -3.60E+00 1.30E+01 4.84E+01 TM 15 24218 06/28/95 Co-141 1.90E+00 2.72E+00 8.86E+00 TM 15 24218 06/28/95 Co-144 1.37E+01 1.01E+01 3.20E+01 TM 15 24218 06/28/95 Co-57 -6.98E-02 1.32E+00 4.37E+00 TM 15 24218 06/28/95 Co-58 -1.82E+00 1.76E+00 6.80E+00 TM 15 24218 06/28/95 Co-60 2.13E+00 2.14E+00 7.60E+00 TM 15 24218 06/28/95 Cr-51 7.89E+00 1.63E+01 5.67E+01 TM 15 24218 06/28/95 Cs-134 0.31E+00 1.89E+00 6.94E+00 TM 15 24218 06/28/95 Cs-137 4.01E+00 2.25E+00 8.19E+00 TM 15 24218 06/28/95 Fe-59 -3.14E+00 6.15E+00 2.44E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l l

,t

i i

seabrook Station Radiological Environmental Data (January - December 1995)

I 5 AMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

TM 15 24218 06/28/95 I-131 -3.98E-02 7.05E-02 0.37E+00 TM 15 24218 06/28/95 K-40 1.45E+03 7.74E+01 8.09E+01 *

, TM 15 24218 06/28/95 Mn-54 -0.16E+00 1.74E+00 6.29E+00 i TM 15 24218 06/28/95 Ru-103 -2.97E+00 1.63E+00 6.64E+00

. TM 15 24218 06/28/95 Ru-106 -3.37E+00 1.42E+01 5.49E+01 TM 15 24218 06/28/95 sb-124 -9.80E+00 4.13E+00 2.01E+01 TM 15 24218 06/28/95 So-75 1.50E+00 1.84E+00 6.04E+00 TM 15 24218 06/28/95 En-65 -4.64E+00 4.73E+00 1.84E+01 2

TM 15 24218 06/28/95 Er-95 7.35E+00 3.23E+00 9.63E+00 TM 15 24420 07/12/95 AcTh228 2.07E+00 4.33E+00 1.48E+01 i

4 TM 15 24420 07/12/95 Ag-110M -0.87E+00 1.60E+00 5.775+00

TM 15 24420 07/12/95 Ba-140 -1.51E+00 2.57E+00 9.75E+00 i

TM. 15 24420 07/12/95 Be-7 1.21E+01 1.02E+01 3.44E+01 TM 15 24420 07/12/95 Co-141 0.41E+00 2.06E+00 6.72E+00 -

-1.39E+01 7.31E+00 2.48E+01 i 'TM 15 24420 07/12/95 Co-144 1' TM 15 24420 07/12/95 Co-57 0.23E+00 0.91E+00 2.96E+00 TM 15 24420 07/12/95 Co-58 -1.55E+00 1.12E+00 4.27E+00

!. TM 15 24420 07/12/95 Co-60 2.11E+00 1.375+00 4.51E+00 i TM. 15 24420 07/12/95 Cr-51 -1.34E+01 1.23E+01 4.41E+01

TM 15 24420 07/12/95 Cs-134 0.11E+00 1.15E+00 4.07E+00 l j TM 15 24420 07/12/95 Cs-137 3.89E+00 1.88E+00 6.61E+00 TM 15 24420 07/12/95 Fe-59 -3.65E+00 4.15E+00 1.58E+01 '

TM 15 24420 07/12/95 I-131 2.54E-02 7.57E-02 0.31E+00

.. TM 15 24420 07/12/95 K-40 1.70E+03 5.98E+01 6.51E+01 * .

! TM 15 24420 07/12/95 Mn-54 2.88E+00 1.30E+00 4.00E+00 l

< TM 15 24420 07/12/95 Ru-103 -2.52E+00 1.29E+00 4.93E+00 )

TM 15 24420 07/12/95 Ru-106 1.01E+01 1.02E+01 3.59E+01 '

TM 15 24420 07/12/95 Sb-124 0.67E+00 2.59E+00 9.56E+00

TM 15 24420 07/12/95 Se-75 1.53E-02 1.34E+00 4.44E+00

TM 15 24420 07/12/95 En-65 0.00E+00 3.37E+00 1.20E+01 i TM 15 24420 07/12/95 Er-95 -2.54E+00 2.48E+00 9.56E+00 1

! TM ' 15 24693 07/26/95 AcTh228 -3.94E+00 6.97E+00 2.65E+01

TM 15 24693 07/26/95 Ag-110M 0.38E+00 2.48E+00 9.08E+00 TM 15 24693 07/26/95 Ba-140 -1.38E+00 2.39E+00 1.04E+01 j TM 15 24693 07/26/95 Be-7 1.24E+01 1.41E+01 4.84E+01 i TM 15 24693 07/26/95 Co-141 -1.52E+00 2.63E+00 8.90E+00 TM 15 24693 07/26/95 Co-144 6.21E+00 9.80E+00 3.19E+01 TM 15 24693 07/26/95 Co-57 -0.53E+00 1.25E+00 4.21E+00 i TM 15 24693 07/26/95 Co-58 -0.38E+00 1.88E+00 6.81E+00 TM 15 24693 07/26/95 Co-60 1.34E+00 2.12E+00 7.78E+00 TM 15 24693 07/26/95 Cr-51 4.64E+00 1.63E+01 5.70E+01 TM 15 24693 07/26/95 Cs-134 -0.43E+00 2.04E+00 7.61E+00 t TM. 15 24693 07/26/95 Cs-137 3.75E+00 2.12E+00 7.10E+00 TM 15 24693 07/26/95 Fe-59 -3.83E+00 7.06E+00 2.75E+01 TM 15 24693 - 07/26/95 I-131 -1.67E-02 2.59E-02 0.14E+00

TM 15 24693 07/26/95 K-40 1.55E+03 7.97E+01 8.44E+01 *

TM 15 24693 07/26/95 Mn-54 -1.04E+00 1.55E+00 5.89E+00 TM 15 24693 07/26/95 Ru-103 0.00E+00 1.85E+00 6.70E+00 l TM 15 24693 07/26/95 Ru-106 -1.73E+00 1.57E+01 5.98E+01

TM 15 24693 07/26/95 sb-124 -2.35E+00 4.20E+00 1.76E+01 TM 15 24693 07/26/95 Se-75 -2.52E+00 1.85E+00 6.65E+00 l 1.90E+01

, TM 15 24693 07/26/95 En-65 -5.23E+00 4.90E+00

TJ 15 24693 07/26/95 Er-95 -4.15E+00 2.76E+00 1.11E+01

Radicactivity detected (i.e., Concentration is > 3 Std. Deviations).

I f

6

)

i i

! Seabrook Station Radiological Environmental Data 1 (January - December 1995) 8 AMPLE CONC. STD DEV. MDC TYPE STA. L4N END DATE NUCLIDE (pCi/kg) (pci/kg) (pci/kg) 4 TM 15 24866 08/09/95 AcTh228 8.40E+00 5.65E+00 1.81E+01 j i TM 15- 24866 08/09/95 Ag-110M 1.53E+00 2.43E+00 8.32E+00 i TM 15 24866 08/09/95 Ba-140 1.61E+00 2.24E+00 8.18E+00 1 TM 15 24866 08/09/95 Be-7 2.33E+00 1.35E+01 4.85E+01

TM 15 24866 08/09/95 Co-141 0.28E+00 2.64E+00 8.74E+00 TM 15 24866 08/09/95 Co-144 1.63E+01 9.33E+00 2.92E+01 TM 15 24866 08/09/95 Co-57 -1.28E+00 1.21E+00 4.13E+00 l TM 15 24866 08/09/95 Co-58 0.26E+00 1.63E+00 5.81E+00 )

l Co-60 1.21E+00 2.04E+00 7.29E+00

TM. 15 24866 08/09/95 5.33E+01 1

TM 15 24866 08/09/95 Cr-51 1.15E+01 1.56E+01 l TM 15 24866 08/09/95 Cs-134 2.23E+00 1.42E+00 4.65E+00 :

TM 15 24866 08/09/95 Cs-137 3.63E+00 2.04E+00 6.96E+00 l l TM 15 24866 08/09/95 Fe-59 1.14E+01 6.54E+00 2.12E+01 l l TM 15 24866 08/09/95 I-131 3.14E-02 8. 90E- 02 0.37E+00

TM 15 24866 08/09/95 K-40 1.60E+03 7.78E+01 8.41E+01

TM 15 24866 08/09/95 Mn-54 -0.66E+00 1.24E+00 4.79E+00

, TM 15 24866 08/09/95 Ru-103 -0.83E+00 1.86E+00 6.85E+00 j TM 15 24866 08/09/95 Ru-106 -1.56E+01 1.42E+01 5.70E+01 i TM 15 24866 08/09/95 Sb-124 -0.39E+00 3.86E+00 1.52E+01

TM 15 24866 08/09/95 Se-75 1.04E+00 1.85E+00 6.12E+00

TM 15 24866 08/09/95 Zn-65 5.22E+00 3.99E+00 1.34E+01 TM - 15 24866 08/09/95 Er-95 5.65E+00 2.98E+00 9.81E+00 i

TM 15 25110 08/23/95 AcTh228 7.87E+00 5.94E+00 1.98E+01 TM 15 25110 08/23/95 Ag-110M 1.33E+00 2.02E+00 7.06E+00 TM 15 25110 08/23/95 Ba-140 -1.72E+00 2.79E+00 1.11E+01

4.85E+01 TM 15 25110 08/23/95 Be-7 1.77E+01 1.40E+01 TM 15 25110 08/23/95 Co-141 3.09E+00 2.74E+00 9.11E+00 TM 15 25110 08/23/95 Ce-144 3.80E+00 1.02E+01 3.44E+01 1 TM 15 25110 08/23/95 Co-57 -0.25E+00 1.32E+00 4.52E+00 1

TM 15 25110 08/23/95 Co-58 1.66E+00 1.70E+00 5.79E+00 TM 15 25110 08/23/95 Co-60 1.73E+00 1.69E+00 5.81E+00 TM 15 25110 08/23/95 Cr-51 -2.09E+00 1.37E+01 4.82E+01 TM 15 25110 08/23/95 Cs-134 -0.39E+00 1.39E+00 4.85E+00 TM 15 25110 08/23/95 Cs-137 3.48E+00 1.66E+00 5.41E+00 TM 15 25110 08/23/95 Fe-59 2.87E+00 5.16E+00 1.77E+01 TM 15 25110 08/23/95 I-131 -2.78E-02 4.20E-02 0.22E+00 TM 15 25110 08/23/95 K-40 1.88E+03 6.95E+01 5.64E+01

TM 15 25110 08/23/95 Mn-54 1.21E+00 1.12E+00 5.24E+00

TM 15 25110 08/23/95 Ru-103 0.45E+00 1.68E+00 5.73E+00 TM 15 25110 08/23/95 Ru-106 1.30E+01 1.20E+01 3.95E+01 TM 15 25110 08/23/95 sb-124 1.37E+00 3.43E+00 1.29E+01 i TM 15 25110 08/23/95 Se-75 1.83E+00 1.81E+00 6.09E+00 j TM 15 25110 08/23/95 En-65 -2.17E+00 4.13E+00 1.55E+01 i TM 15 25110 08/23/95 Er-95 1.39E+00 2.65E+00 9.28E+00

[ TM 15 25296 09/06/95 AcTh228 6.62E+00 4.77E+00 1.70E+01

. TM 15 25296 09/06/95 Ag-110M 2.00E+00 1.42E+00 4.71E+00 l- TM 15 25296 09/06/95 Ba-140 1.66E+00 1.51E+00 5.04E+00 TM 15 25296 09/06/95 Be-7 -3.42E+00 9.01E+00 3.29E+01 5.652+00 TM 15 25296 09/06/95 Co-141 -2.51E+00 1.68E+00 TM 15 25296 09/06/95 Co-144 -1.27E+01 6.31E+00 2.13E+01 TM 15 25296 09/06/95 Co-57 -0.30E+00 0.81E+00 2.66E+00 TM 15 25296 09/06/95 Co-58 0.23E+00 0.98E+00 3.33E+00 j TM 15 25296 09/06/95 Co-60 -0.60E+00 1.32E+00 4.92E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l

! i 1

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pCi/kg) (pci/kg)

) ;

i s

TM 15 25296 09/06/95 Cr-51 -2.29E+00 9.55E+00 3.32E+01'

]

< TM 15 25296 09/06/95 Cs-134 -0.78E+00 1.03E+00 3.84E+00 TM 15 25296 09/06/95, co-137 2.58E+00 1.08E+00 3.33E+00 TM 15 25296 09/06/95 Fe-59 -0.90E+00 3.84E+00 1.41E+01 TM 15 25296 09/06/95 I-131 0.00E+00 6.60E-02 0.29E+00 TM 15 25296 09/06/95 K-40 1.72E+03 4.99E+01 5.61E+01

3 TM. 15 25296 09/06/95 Mn-54 -0.28E+00 1.04E+00 3.70E+00 T4 15 25296 09/06/95 Ru-103 -0.56E+00 1.20E+00 4.39E+00 IM 15 25236 09/06/95 Ru-106 -0.74E+00 9.59E+00 3.48E+01 TM 15 25296 09/06/95 sb-124 -0.50E+00 1.83E+00 7.00E+00

- TM 15 25296 09/06/95 So-75 1.08E+00 1.38E+00 4.62E+00 TM 15 25296 09/06/95 En-65 -4.81E+00 2.66E+00 1.00E+01 TM 15 25296 09/06/95 Er-95 1.41E+00 1.73E+00 5.74E+00 ,

l

j. TM 15 25545 09/20/95 AcTh228 1.26E+00 5.84E+00 2.12E+01 1 ini 15 25545 09/20/95 Ag-110M 0.00E+00 2.13E+00 7.89E+00 l TM 15 25545 09/20/95 Ba-140 -3.8'lE+00 2.44E+00 1.08E+01 )

TM 15 25545 09/20/95 Be-7 1.05E+00 1.29E+01 4.80E+01 TM 15 25545 09/20/95 Co-141 -3.31E+00 2.59E+00 8.97E+00

TM 15 25545 09/20/95 Co-144 -9.03E+00 9.86E+00 3.36E+01 TM 15 25545 09/20/95 Co-57 2.45E+00 1.31E+00 4.09E+00

! TM 15 25545 09/20/95 Co-58 -2.19E+00 1.52E+00 6.01E+00 l TM 15 25545 09/20/95 Co-60 1.04E+00 2.15E+00 7.89E+00 TM 15 25545 09/20/95 Cr-51 1.41E+01 1.63E+01 5.53E+01 TM .15 25545 09/20/95 Cs-134 -4.68E+00 3.54E+00 1.16E+01 TM 15 25545 09/20/95 Cs-137 0.16E+00 1.54E+00 5.43E+00 i TM 15 25545 09/20/95 Fe-59 -7.94E+00 6.29E+00 2.53E+01 TM 15 25545 09/20/95 I-131 -5.28E-02 4.11E-02 0.27E+00 f TM 15 25545 09/20/95 K-40 1.68E+03 7.85E+01 1.04E+02

TM 15 25545 09/20/95 Mn-54 -2.27E+00 1.64E+00 6.49E+00 j j TM 15 25545 09/20/95 Ru-103 -0.24E+00 1.99E+00 7.37E+00 ,

! TM 15 25545 09/20/95 Ru-106 6.72E+00 1.35E+01 4.95E+01 l TM 15 25545 09/20/95 Sb-124 1.27E+00 1.40E+00 4.89E+00 TM 15 25545 09/20/95 Se-75 3.10E+00 2.06E+00 6.81E+00 TM 15 25545 09/20/95 En-65 -3.94E+00 4.10E+00 1.59E+01

TM 15 25545 09/20/95 Er-95 3.37E+00 2.71E+00 1.05E+01 I I TM 15 25758 10/04/95 AcTh228 0.63E+00 5.64E+00 1.96E+01 i i TM 15 25758 10/04/95 Ag-110M -0.21E+00 1.75E+00 6.26E+00 !

j TM 15 25758 10/04/95 Ba-140 4.47E+00 1.92E+00 5.46E+00 TM 15 25758 10/04/95 Be-7 6.62E+00 1.09E+01 3.78E+01 TM 15 25758 10/04/95 Co-141 1.51E+00 2.08E+00 6.71E+00

=

TM 15 25758 10/04/95 Co-144 -2.94E+00 7.96E+00 2.64E+01

TM 15 25758 10/04/95 Co-57 -0.20E+00 1.02E+00 3.35E+00

. TM 15 25758 10/04/95 Co-58 -0.17E+00 1.40E+00 4.96E+00 TM 15 25758 10/04/95 Co-60 -1.68E+00 1.57E+00 6.22E+00

. TM 15 25758 10/04/95 Cr-51 1.89E+00 1.26E+01 4.39E+01 4

TM 15 25758 10/04/95 Cs-134 -0.14E+00 1.30E+00 4.69E+00 TM 15 25758 10/04/95 Cs-137 2.35E+00 1.61E+00 5.53E+00 TM 15 25758' 10/04/95 Fe-59 2.49E+00 4.67E+00 1.65E+01 TM 15 25758 10/04/95 I-131 3.473-02 6.78E-02 0.26E+00 l TM 15 25758 10/04/95 K-40 1.65E+03 6.56E+01 6.98E+01

TM 15 25758 10/04/95 Mn-54 -0.60E+00 1.35E+00 4.86E+00 TM 15 25758 10/04/95 Ru-103 -0.70E+00 1.50E+00 5.41E+00 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

k , , ..

4 l Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC i TYPE STA. L8N IND DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) 4 ------------------------------------------------------------------------------

J TM 15 25758 10/04/95 Ru-106 -0.60E+00 1.26E+01 4.66E+01 TM 15 25758 10/04/95 Sb-124 -2.11E+00 3.23E+00 1.28E+01

. TM 15 25758 10/04/95 so 0.75E+00 1.49E+00 4.90E+00 j TM 15 25758 10/04/95 In-65 -2.50E+00 3.44E+00 1.29E+01 TM 15 25758 10/04/95 Er-95 -3.83E+00 2.60E+00 1.04E+01 g

TM .15 26356 11/01/95 AcTh228 -1.04E+00 5.93E+00 2.12E+01 TM 15 26356 11/01/95 Ag-110M 1.38E+00 2.38E+00 8.09E+00 TM '15 26356 11/01/95 Ba-140 -1.68E+00 2.74E+00 1.11E+01 TM 15 26356 11/01/95 Be-7 -4.18E+00 1.30E+01 4.72E+01 TM 15 26356 11/01/95 Co-141 1.53E+00 2.88E+00 9.30E+00 TM 15 26356 11/01/95 Co-144 -5.08E+00 9.97E+00 3.30E+01

. 4.05E+00 TM 15 26356 11/01/95 Co-57 0.77E+00 1.26E+00 TM 15 26356 11/01/95 Co-58 -0.41E+00 1.57E+00 5.66E+00 TM 15 26356 11/01/95 Co-60 0.58E+00 1.68E+00 6.14E+00 l TM 15 26356 11/01/95 Cr-51 2.57E+01 1.62E+01 5.32E+01 TM 15 26356 11/01/95 Cs-134 -2.19E+00 1.48E+00 5.71E+00

]

TM 15 26356 11/01/95 Cs-137 2.41E+00 1.94E+00 6.72E+00 i TM 15 26356 11/01/95 Fe-59 -1.67E+01 5.67E+00 2.43E+01

. TM 15 26356 11/01/95 I-131 -7.73E-04 7.91E-02 0.36E+00

TM 15 26356 11/01/95 K-40 1.63E+03 7.16E+01 7.74E+01

i TM 15 26356 11/01/95 Mn-54 3.07E+00 1.54E+00 4.77E+00 4 TM 15 26356 11/01/95 Ru-103 -1.07E+00 1.60E+00 5.95E+00 TM 15 26356 11/01/95 Ru-106 -1.19E+01 1.423+01 5.51E+01 TM 15 26356 11/01/95 Sb-124 -1.54E+00 3.41E+00 1.38E+01 TM 15 26356 11/01/95 Se-75 -0.34E+00 1.78E+00 5.98E+00 i TM 15 26356 11/01/95 Zn-65 -2.02E+00 4.23E+00 1.57E+01 TM 15 26356 11/01/95 Zr-95 -0.46E+00 3.24E+00 1.22E+01 l

TM 15 26781 11/30/95 AcTh228 -3.62E+00 5.84E+00 2.19E+01 i TM 15 26781 11/30/95 Ag-110M -1.11E+00 2.15E+00 8.04E+00

! TM 15 26781 11/30/95 Ba-140 -0.33E+00 1.74E+00 6.97E+00 TM 15 26781 11/30/95 Be-7 1.07E+01 1.39E+01 4.93E+01

TM 15 26781 11/30/95 Co-141 3.22E+00 2.49E+00 7.89E+00 j TM 15 26781 11/30/95 Co-144 6.71E+00 9.84E+00 3.18E+01 TM 15 26781 11/30/95 Co-57 0.80E+00 1.27E+00 4.09E+00 TM 15 26781 11/30/95 Co-58 -1.26E+00 1.51E+00 5.61E+00 j, TM 15 26781 11/30/95 Co-60 -1.59E+00 2.09E+00 8.16E+00 i TM 15 26781 11/30/95 Cr-51 -1.50E+01 1.30E+01 4.81E+01

TM 15 26781 11/30/95 Cs-134 -8.09E+00 4.00E+00 1.46E+01

, TM 15 26781 11/30/95 Cs-137 1.03E+00 1.50E+00 5.05E+00 j TM 15 26781 11/30/95 Fe-59 1.41E+00 4.46E+00 1.66E+01 i TM 15 26781 11/30/95 I-131 2.20E-02 4.14E-02 0.16E+00

. TM 15 26781 11/30/95 K-40 1.64E+03 7.10E+01 8.98E+01 *

- TM 15 26781 11/30/95 Mn-54 0.57E+00 1.61E+00 5.71E+00

. TM 15 26781 11/30/95 Ru-103 -2.11E+00 1.84E+00 7.04E+00 TM 15 26781 11/30/95 Ru-106 2.60E+01 1.38E+01 4.62E+01 a TM 15 26781 11/30/95- sb-124 2.66E+00 2.75E+00 9.56E+00 TM 15 26781 11/30/95 so-75 -0.25E+00 2.04E+00 7.12E+00 l 2.87E+01

TM 15 26781 11/30/95 En-65 7.79E+00 7.53E+00

< TM 15 26781 11/30/95 Er-95 1.47E+00 2.69E+00 9.17E+00 TM 15 27204 12/27/95 AcTh228 9.20E+00 6.76E+00 2.13E+01

' TM 15 27204 12/27/95 Ag-110M -1.79E+00 1.75E+00 6.53E+00 TM 15 27204 12/27/95 Ba-140 0.29E+00 2.31E+00 8.65E+00 i

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

I d

4

, , ,- - - - - , . . , . ----.n

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

TM 15 27204 12/27/95 Be-7 -4.39E+00 9.89E+00 3.55E+01 TM 15 27204 12/27/95 Co-141 -4.25E+00 1.98E+00 6.77E+00 TM 15 27204 12/27/95 Co-144 -1.10E+01 6.78E+00 2.29E+01 l TM 15 27204 12/27/95 Co-57 4.49E-02 0.84E+00 2 72E+00 TM 15 27204 12/27/95 Co-58 0.40E+00 1.22E+00 4.17E+00 TM 15 27204 12/27/95 Co-60 1.49E+00 1.39E+00 4.83E+00 TM 15 27204 12/27/95 Cr-51 -1.13E+01 1.19E+01 4.26E+01 TM 15 27204 12/27/95 Cs-134 -1.55E+00 2.36E+00 7.37E+00 TM 15 27204 12/27/95 Cs-137 0.77E+00 1.25E+00 4.47E+00 i TM 15 27204 12/27/95 Fe-59 1.13E+00 4.61E+00 1.68E+01 TM 15 27204 12/27/95 I-131 8.54E-02 7.96E-02 0.27E+00 TM 15 27204 12/27/95 K-40 1.58E+03 5.55E+01 6.33E+01

TM 15 27204 12/27/95 Mn-54 -1.21E+00 1.12E+00 4.10E+00 1.39E+00 4.98E+00 I TM 15 27204 12/21/95 Ru-103 -0.80E+00 TM 15 27204 12/27/95 Ru-106 1.57E+01 1.08E+01 3.71E+01 TM 15 27204 12/27/95 Sb-124 8.21E+00 3.16E+00 9.30E+00 TM 15 27204 12/27/95 Se-75 -7.19E-02 1.33E+00 4.42E+00 TM 15 27204 12/27/95 Zn-65 -7.25E+00 3.41E+00 1.31E+01 TM 15 27204 12/27/95 Zr-95 -1.08E+00 2.07E+00 7.40E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

. - -. . _- . - . _ - - - . - . - - .- -.-~---

!- seabrook station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) )

l ...........--.....--...........................................--------...---- 1 l TM 16 21089 01/11/95 AcTh228 0.55E+00 5.77E+00 2.04E+01 f TM 16 21089 01/11/95 Ag-110M -0.99E+00 1.85E+00 5.97E+00 1 TM 16 21089 01/11/95 Ba-140 0.00E+00 1.80E+00 5.91E+00 t TM 16 21089 01/11/95 Be-7 -2.51E+00 9.48E+00 2.83E+01 TM. 16 21089 01/11/95 Co-141 5.00E+00 2.10E+00 5.81E+00 l

- TM 16 21089 01/11/95 Co-144 1.51E+01 7.90E+00 2.22E+01 TM 16 21089 01/11/95 Co-57 0.28E+00 1.07E+00 3.12E+00

TM 16 21089 01/11/95 Co-58 0.94E+00 1.40E+00 4.22E+00 TM 16 21089 01/11/95 Co-60 1.34E+00 1.83E+00 6.43E+00 TM 16- 21089 01/11/95 Cr-51 -3.70E+00 1.09E+01 3.25E+01 I TM 16 21089 01/11/95 Cs-134 -0.56E+00 1.10E+00 3.34E+00

TM 16 21089 01/11/95 Cs-137 5.89E+00- 1.82E+00 5.42E+00

TM 16 21089 01/11/95 Fe-59 -0.11E+00 3.52E+00 1.11E+01 TM 16 21089 01/11/95 I-131 -0.11E+00 0.10E+00 0.53E+00

TM 16 21089 01/11/95 K-40 1.68E+03 5.98E+01 5.24E+01.*

j TM 16 21089 01/11/95 Mn-54 0.00E+00 1.39E+00 4.35E+00 TM 16 21089 01/11/95 Ru-103 1.48E+00 1.26E+00 3.49E+00 TM 16 21089 01/11/95 Ru-106 -1.11E+00 9.87E+00 2.92E+01 TM 16 21089 01/11/95 Sb-124 -2.15E+00 2.74E+00 9.66E+00 j TM 16 21089 01/11/95 so-75 -6.63E-02 1.50E+00 4.41E+00 i TM 16 21089 01/11/95 En-65 0.75E+00 3.03E+00 9.36E+00 i TM 16 21089 01/11/95 Er-95 1.58E+00 2.14E+00 6.42E+00 TM 16 21574 02/08/95 AcTh228 -2.62E+00 3.65E+00 1.30E+01

TM 16 21574 02/08/95 Ag-110M 2.04E+00 1.43E+00 4.73E+00 i TM 16 21574 02/08/95 Ba-140 -0.53E+00 2.03E+00 7.60E+00 TM 16 21574 02/08/95 Be-7 1.73E+01 9.19E+00 3.11E+01 TM 16 21574 02/08/95 Co-141 1.50E+00 1.92E+00 6.39E+00 TM 16 21574 02/08/95 Co-144 -5.96E+00 6.75E+00 2.30E+01 t

2.90E+00 l l TM 16 21574 02/08/95 Co-57 -0.50E+00 0.85E+00 )'

TM 16 21574 02/08/95 Co-58 1.54E+00 1.09E+00 3.60E+00 l

TM 16 21574 02/08/95 Co-60 0.00E+00 1.24E+00 4.34E+00 TM 16 21574 02/08/95 Cr-51 -5.71E+00 1.03E+01 3.55E+01 l

TM 16 21574 02/08/95 Cs-134 0.54E+00 1.29E+00 4.33E+00 TM 16 21574 02/08/95 Cs-137 1.07E+00 0.97E+00 3.13E+00 TM 16 21574 02/08/95 Fe-59 -4.36E+00 3.64E+00 1.30E+01 i TM 16 21574 02/08/95 I-131 -1.73E-02 0.10E+00 0.48E+00

TH 16 21574 02/08/95 K-40 1.79E+03 4.37E+01 4.04E+01

f j TM 16 21574 02/08/95 Mn-54 -0.49E+00 1.02E+00 3.58E+00 l TM 16 21574 02/08/95 Ru-103 -0.71E+00 1.29E+00 4.64E+00 -

i TM 16 21574 02/08/95 Ru-106 -1.73E+01 8.14E+00 2.92E+01 TM 16 21574 02/08/95 sb-124 3.86E+00 2.11E+00 6.92E+00 ,

- TM 16 21574 02/08/95 So-75 -1.11E+00 1.22E+00 4.23E+00 1

TM 16 21574 02/08/95 En-65 0.40E+00 2.76E+00 9.77E+00 '

TM 16 21574 02/08/95 Er-95 1.21E+00 1.83E+00 6.25E+00 l

TM 16 22010 03/08/95 AcTh228 3.62E+00 9.06E+00 3.13E+01 i TM 16 22010 03/08/95 Ag-110M 5.22E+00 3.59E+00 1.19E+01 J TM 16 22010 03/08/95 Ba-140 -0.94E+00 2.84E+00 1.07E+01 TM 16 22010 03/08/95 Be-7 -1.27E+00 1.80E+01 6.27E+01 ;

TM 16 22010 03/08/95 Co-141 -6.25E+00 3.92E+00 1.36E+01 ,

TH 16 22010 03/08/95 Co-144 -1.10E+01 1.47E+01 5.03E+01 )

TM 16 22010 03/08/95 Co-57 1.73E+00 1.87E+00 6.23E+00 1 TM 16 22010 03/08/95 Co-58 -2.63E+00 2.29E+00 8.29E+00 !

TM 16 22010 03/08/95 Co-60 1.13E+00 2.62E+00 9.31E+00 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i Seabrook station Radiological Environmental Data i (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE .(pci/kg) (pci/kg) (pci/kg)

TM 16 22010 03/08/95 Cr-51 -3.32E+01 2.13E+01 7.43E+01 3

TM 16 22010 03/08/95 Cs-134 -1.48E+00 2.38E+00 8.54E+00 i TM 16 22010 03/08/95- Co-137 5.30E+00 2.62E+00 8.63E+00 TM 16 22010 03/08/95 Fe-59 8.61E+00 8.04E+00 2.75E+01 TM 16 22010 03/08/95 I-131 0.24E+00 0.14E+00 0.37E+00 TM 16 22010 03/08/95 K-40' 1.75E+03 7.39E+01 8.41E+01 *

. TM 16 22010 03/08/95 .Mn-54 -1.08E+00 2.13E+00 7.55E+00 TM 16 22010 03/08/95 Ru-103 0.48E+00 2.57E+00 8.83E+00 TM 16 22010 03/08/95 Ru-106 -1.09E+01 2.075+01 7.50E+01 1 TM 16 22010 03/08/95 Sb-124 0.00E+00 5.17E+00 1.90E+01 TM 16 22010 03/08/95 Se-75 -1.53E+00 2.89E+00 9.76E+00 TM 16 22010 03/08/95 2n-65 5.70E+00 6.12E+00 2.07E+01

TM 16 22010 03/08/95 Er-95 1.36E+00 3.98E+00 1.36E+01 TM 16 22462 04/05/95 AcTh228 -0.38E+00 4.00E+00 1.39E+01

- TM 16 22462 04/05/95 Ag-110M 2.14E+00 1.44E+00 4.60E+00

' TM 16 22462 04/05/95 Ba-140 0.15E+00 1.68E+00 6.03E+00 TM 16 22462 04/05/95 Be-7 0.00E+00 8.67E+00 3.03E+01 TM 16 22462 04/05/95 Co-141 -0.81E+00 1.68E+00 5.52E+00 TM 16 22462 04/05/95 Co-144 0.42E+00 6.28E+00 2.04E+01 ,

TM 16 22462 04/05/95 Co-F7 -0.92E+00 0.81E+00 2.68E+00 ;

TM 16 22462 04/05/95 Co-58 0.99E+00 1.10E+00 3.64E+00 TM 16 22462 04/05/95 Co-60 1.01E+00 1.29E+00 4.46E+00 TM 16 22462 04/05/95 Cr-51 2.26E+00 9.84E+00 3.37E+01 TM 16 22462 04/05/75 Cs-134 -0.84E+00 1.02E+00 3.69E+00

TM 16 22462 04/05/95 Cs-137 0.33E+00 1.20E+00 4.31E+00 TM 16 22462 04/05/95 Fe-59 -3.57E+00 3.87E+00 1.43E+01 l 0.45E+00 TM 16 22462 04/05/95 I-131 -8.93E-03 9.66E-02

" TM 16 22462 04/05/95 K-40 1.86E+03 5.41E+01 5.55E+01 *

TM 16 22462 04/05/95 Mn-54 0.67E+00 0.97E+00 3.23E+00 TM 16 22462 04/05/95 Ru-103 -3.04E+00 1.07E+00 4.12E+00

TM 16 22462 04/05/95 Ru-106 -5.52E+00 1.04E+01 3.85E+01 TM 16 22462 04/05/95 Sb-124 1.53E+00 2.13E+00 7.43E+00 TM 16 22462 04/05/95 so-75 0.46E+00 1.16E+00 3.78E+00 TM 16 22462 04/05/95 En-65 3.50E+00 2.89E+00 9.68E+00 7.62E+00 TM 16 22462 04/05/95 Er-95 -0.54E+00 2.07E+00

' TM 16 22788 04/19/95 AcTh228 -1.12E+01 6.17E+00 2.42E+01 TM 16 22788 04/19/95 Ag-110M 4.35E+00 2.25E+00 7.22E+00

j. TM 16 22788 04/19/95 Ba-140 0.00E+00 3.03E+00 1.14E+01 TM 16 22788 04/19/95 Be-7 1.29E+00 1.08E+01 3.88E+01 4

TM 16 22788 04/19/95 Co-141 3.43E+00 2.31E+00 7.31E+00

TM 16 22788 04/19/95 Co-144 -5.73E+00 8.00E+00 2.69E+01 TM 16 22788 04/19/95 Co-57 0.41E+00 1.04E+00 3.37E+00 5.86E+00 TM 16 22788 04/19/95 Co-58 -3.31E+00 1.46E+00

~

TM 16 22788 04/19/95 Co-60 -2.16E+00 1.51E+00 6.44E+00 TM 16 22788 04/19/95 Cr-51 2.30E+00 1.46E+01 5.08E+01 TM 16 22788 04/19/95 Cs-134 -0.45E+00 1.48E+00 5.50E+00 TM 16 22788 04/19/95 Cs-137 2.40E+00 1.70E+00 5.86E+00 i TM 16 22788 04/19/95 Fe-59 -1.36E+01 5.24E+00 2.26E+01 i TM 16 22788 04/19/95 I-131 3.96E-02 5.02E-02 0.19E+00

, TM 16 22788 04/19/95 K-40 1.42E+03 6.47E+01 7.39E+01

t TM 16 22768 04/19/95 Mn-54 -2.96E+00 1.30E+00 5.27E+00 TM 16 22789 04/19/95 Ru-103 -0.49E+00 1.50E+00' 5.46E+00

j. TM 16 22788 04/19/95 Ru-106 -4.97E+00 1.19E+01 4.56E+01

Radioactivity detectod (i.e., Concentration is > 3 Std. Deviations).

l 1

- - -. - - . . . . . _ - - - - . ~ - . -. - - - - . -- - . -

i l'

! Seabrook Station Radiological Environmental Data

(January - December.1995)

I SAMPLE COWC. STD DEV. MDC i TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) 1 I TM 16 22788 04/19/95 Sb-124 8.20E+00 3.77E+00 .1.14E+01 j TM 16 22788 04/19/95 Se-75 1.06E+00 1.66E+00 5.44E+00 TM 16 22788 04/19/95 En-65 4.02E+00 7.42E+00 2.91E+01

. TM 16 22788 04/19/95 Er-95 3.17E+00 2.47E+00 8.04E+00 i TM 16 23070 05/03/95 AcTh228 2.61E+00 5.45E+00 1.92E+01 TM 16 23070 05/03/95 Ag-110M -1.25E+00 2.17E+00 8.04E+00 i TM 16 23070 05/03/95 Ba-140 2.91E+00 1.74E+00 5.40E+00 TM 16 23070 05/03/95 Be-7 -7.21E+00 1.37E+01 5.12E+01

TM 16 23070 05/03/95 Co-141 -3.16E+00 2.45E+00 8.36E+00

, TM 16 23070 05/03/95 Co-144 -6.71E+00 8.12E+00 2.74E+01 TM 16 23070 05/03/95 Co-57 -0.60E+00 1.10E+00 3.67E+00 TM 16 23070 05/03/95 Co-58 -2.52E+00 1.19E+00 4.85E+00 TM 16 23070 05/03/95 Co-60 2.50E+00 1.61E+00 5.43E+00 a

TM 16 23070 05/03/95 Cr-51 1.61E+01 1.29E+01 4.30E+01

.TM '16 23070 05/03/95 Cs-134 -1.09E+00 1.51E+00 5.75E+00 TM- 16 23070 05/03/95 Cs-137 2.98E+00 1.65E+00 5.74E+00 TM 16 23070 05/03/95 Fe-59 -1.13E+00 4.60E+00 1.76E+01 TM 16 23070 05/03/95 I-131 0.22E+00 0.14E+00 0.35E+00 4 TM 16 23070 05/03/95 K-40 1.74E+03 6.88E+01 8.09E+01

TM 16 23070 05/03/95 Mn-54 -1.04E+00 1.40E+00 5.28E+00 l 6.54E+00

! TM 16 23070 05/03/95 Ru-103 -0.48E+00 1.77E+00 TM 16 23070 05/03/95 Ru-106 1.40E+01 1.175+01 4.09E+01 TM 16 23070 05/03/95 Sb-124 2.47E+00 2.50E+00 8.68E+00 TM 16 23070 05/03/95 So-75 0.38E+00 1.80E+00 6.20E+00 i 1.35E+01 2

TM 16 23070 05/03/95 En-65 -3.43E+00 3.54E+00

.1N( 16 23070 05/03/95 Er-95 -1.14E+00 2.44E+00 8.83E+00 TM 16 23385 05/17/95 AcTh228 1.57E+01 6.95E+00 2.19E+01 TM 16 23385 05/17/95 Ag-110M -0.80E+00 2.30E+00 8.54E+00 TM 16 23385 05/17/95 Ba-140 -3.74E+00 2.79E+00 1.17E+01

,! TM 16 23385 05/17/95 Be-7 2.52E+01 1.33E+01 4.43E+01 l TM 16 23385 05/17/95 Co-141 5.44E+00 2.61E+00 8.46E+00

, TM 16 23385 05/17/95 Co-144 7.36E+00 1.08E+01 3.65E+01

TM 16 23385 05/17/95 Co-57 1.25E+00 1.43E+00 4.81E+00 i TM 16 23385 05/17/95 Co-58 0.86E+00 1.78E+00 6.28E+00 TM 16 23385 05/17/95 Co-60 -0.89E+00 1.80E+00 6.96E+00 TM 16 23385 05/17/95 Cr-51 -9.47E+00 1.47E+01 5.28E+01

] TM 16 23385 05/17/95 Cs-134 -0.97E+00 1.39E+00 5.02E+00 j TM 16 23385 05/17/95 Co-137 2.72E+00 1.75E+00 5.60E+00

TM 16 23385 05/17/95 Fe-59 -3.47E+00 5.53E+00 2.05E+01 TM 16 23385 05/17/95 I-131 -3.22E-02 4.88E-02 0.26E+00 ,

' TM 16 23385 05/17/95 K-40 1.78E+03 7.45E+01 7.36E+01

TM 16 23385 05/17/95 Mn-54 -0.70E+00 1.57E+00 5.87E+00 TM 16 23385 05/17/95 Ru-103 1.54E+00 1.76E+00 6.22E+00 J TM 16 23385 05/17/95 Ru-106 3.75E+00 1.41E+01 4.85E+01 j TM 16 23385 05/17/95 Sb-124 0.85E+00 3.37E+00 1.32E+01 TM 16 23385 05/17/95 Se-75 -l'.30E+00 2.12E+00 7.51E+00

. TM 16 23385 05/17/95 En-65 -7.88E+00 4.77E+00 1.89E+01 TM 16 23385 05/17/95 Er-95 1.48E+00 3.10E+00 1.09E+01 1 TM 16 236*4 05/31/95 AcTh228 0.71E+00 6.31E+00 2.26E+01

TM 16 23644 05/31/95 Ag-110M 2.07E+00 2.67E+00 8.99E+00 TM 16 23644 05/31/95 Ba-140 0.31E+00 1.87E+00 7.49E+00 j TM 16 23644 05/31/95 Be-7 2.51E+01 1.37E+01 4.41E+01 1

$

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

4 i.

e-- w

w r

l 4

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L5N END DATE NUCLIDE (pCi/kg) (pci/kg) (pci/kg)

TM 16 23644 05/31/95 Co-141 0.56E+00 2.66E+00 8.76E+00 i TM 16 23644 05/31/95 Co-144 2.10E+00 1.00E+01 3.29E+01 l TM 16 23644 05/31/95 Co-57 -0.35E+00 1.28E+00 4.28E+00 TM 16 23644 05/31/95 Co-58 -0.20E+00 1.69E+00 6.11E+00 TM 16 23644 05/31/95 Co-60 2.87E+00 1.83E+00 5.99E+00 TM 16 23644 05/31/95 Cr -1.69E+01 1.52E+01 5.62E+01 TM 16 23644 05/31/95 Cs-134 -1.26E+00 1.73E+00 6.49E+00 TM 16 23644 05/31/95 Cs-137 5.68E+00 2.13E+00 6.76E+00 TM 16 23644 05/31/95 Fe-59 5.40E+00 5.44E+00 1.88E+01 TM 16 23644 05/31/95 I-131 1.66E-02 5.07E-02 0.20E+00 TM 16- 23644 05/31/95 K-40 1.81E+03 8.43E+01 9.01E+01

TM 16 23644 05/31/95 Mn-54 0.93E+00 1.80E+00 6.19E+00 TM 16 23644 05/31/95 Ru-103 -1.25E+00 1.72E+00 6.45E+00

} 4.47E+01 1.50E+01 4.54E+01 TM 16- 23644 05/31/95 Ru-106 1

TM 16 23644 05/31/95 Sb-124 -5.15E+00 2.88E+00 1.44E+01 TM 16 23644 05/31/95 so-75 3.27E+00 1.87E+00 5.85E+00 TM 16 23644 05/31/95 En-65 -1.2SE+00 5.07E+00 1.86E+01 i TM 16 23644 05/31/95 Er-95 3.50E+00 2.85E+00 9.94E+00 v

TM 16 23981 06/14/95 AcTh228 -8.99E+00 9.34E+00 3.46E+01 i TM 16 23981 06/14/95 Ag-110M -1.58E+00 3.91E+00 1.40E+01 1

TM 16 23981 06/14/95 Ba-140 1.09E+00 3.53E+00 1.29E+01 TM 16 23981 06/14/95 Be-7 -1.47E+01 2.12E+01 7.61E+01

TM 16 23981 06/14/95 Co-141 -9.97E+00 4.52E+00 1.59E+01 TM 16 23981 06/14/95 Co-144 -1.68E+01 1.65E+01 5.68E+01 l TM 16 23981 06/14/95 Co-57 3.64E+00 2.26E+00 7.42E+00 1 TM 16 23981 06/14/95 Co-58 1.61E+00 2.73E+00 9.25E+00 TM 16 23981 06/14/95 Co-60 -3.94E+00 2.81E+00 1.11E+01

- TM 16 23981 06/14/95 Cr-51 -1.79E+01 2.54E+01 8.71E+01

! TM 16 23981 06/14/95 Co-134 1.62E+00 2.65E+00 9.19E+00 TM 16 23981 06/14/95 Cs-137 1.19E+00 2.71E+00 9.54E+00 TM 16 23981 06/14/95 Fe-59 1.97E+00 8.76E+00 3.14E+01

TM 16 23981 06/14/95 I-131 9.88E-02 7.43E-02 0.19E+00 l t TM 16 23981 06/14/95 K-40 1.88E+03 8.56E+01 9.83E+01

TM 16 23981 06/14/95 Mn-54 1.31E+00 2.59E+00 8.T'2+00

TM 16 23981 06/14/95 Ru-203 -3.12E+00 2.73E+00 9.94E+00 TM 16 23981 06/14/95 Ru-106 -2.81E+01 2.26E+01 8.48E+01 TM 16 23981 06/14/95 Sb-124 8.45E+00 6.68E+00 2.25E+01 TM 16 23981 06/14/95 Se-75 -4.68E+00 3.28E+00 1.14E+01 j TM 16 23981 06/14/95 En-65 5.45E+00 6.88E+00 2.35E+01 TM 16 23981 06/14/95 Zr-95 5.58E+00 4.53E+00 1.49E+01 j

TM 16 24219 06/28/95 AcTh228 0.40E+00 6.77E+00 2.45E+01 TM 16 24219 06/28/95 Ag-110M -3.37E+00 2.52E+00 9.95E+00 i TM 16 24219 06/28/95 Ba-140 1.67E+00 2.84E+00 1.12E+01 i l

TM 16 24219 06/28/95 Be-7 -6.40E+00 1.53E+01 5.68E+01 TM 16 24219 06/28/95 Co-141 1.69E+00 2.92E+00 9.55E+00 !

TM 16 24219 06/28/95 Ce-144 -9.74E+00 1.05E+01 3.59E+01 l TM 16 24219 06/28/95 Co-57 -2.40E+00 1.36E+00 4.75E+00 1 TM 16 24219 06/28/95 Co-58 -1.92E+00 2.23E+00 8.29E+00 l TM 16 24219 06/28/95 Co-60 -1.19E+00 2.28E+00 8.97E+00 TM 16 24219 06/28/95 Cr-51 2.17E+01 1.79E+01 5.99E+01 ,

TM 16 24219 06/28/95 Cs-134 1.68E+00 1.68E+00 5.76E+00 l TM 16 24219 06/28/95 Cs-137 1.84E+00 1.99E+00 7.08E+00 l TM 16 24219 06/28/95 Fe-59 -1.09E+00 7.13E+00 2.67E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

I j

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pC1/kg) (pC1/kg)

TM 16 24219 06/28/95 I-131 0.16E+00 0.11E+00 0.23E+00 TM 16 24219 06/28/95 K-40 1.88E+03 9.20E+01 1.02E+02

TM 16 24219 06/28/95 Mn-54 1.85E+00 2.06E+00 6.89E+00 TM 16 24219 06/28/95 Ru-103 0.73E+00 1.94E+00 6.88E+00 TM 16 24219 06/28/95 Ru-106 8.28E+00 1.66E+01 6.10E+01 TM 16 24219 06/28/95 Sb-124 -2.53E+00 3.90E+00 1.67E+01 TM 16 24219 06/28/95 Se-75 2.74E+00 1.91E+00 6.08E+00 TM 16 24219 06/28/95 Zn-65 -4.30E+00 5.07E+00 1.96E+01 TM 16 24219 06/28/95 Zr-95 -0.76E+00 3.80E+00 1.45E+01 TM 16 24421 07/12/95 AcTh228 9.12E+00 6.09E+00 2.15E+01 TM 16 24421 07/12/95 Ag-110M -1.01E+00 1.51E+00 5.60E+00 TM 16 24421 07/12/95 Ba-140 -0.44E+00 1.99E+00 7.50E+00 TM 16 24421 07/12/95 Be-7 -1.58E+01 1.10E+01 4.17E+01 TM 16 24421 07/12/95 Ce-141 1.50E+00 2.07E+00 6.69E+00 TM 16 24421 07/12/95 Co-144 2.20E+00 6.67E+00 2.16E+01 TM 16 24421 07/12/95 Co-57 0.88E+00 0.92E+00 2.92E+00 TM 16 24421 07/12/95 Co-58 -0.22E+00 1.23E+00 4.28E+00 TM 16 24421 07/12/95 Co-60 -1.57E+00 1.45E+00 5.62E+00 TH 16 24421 07/12/95 Cr-51 -1.18E+01 1.23E+01 4.37E+91 TM 16 24421 07/12/95 Cs-134 -1.34E+00 1.26E+00 4.75E+00 TM 16 24421 07/12/95 Cs-137 1.68E+00 1.29E+00 4.16E+00 TM 16 24421 07/12/95 Fe-59 -0.17E+00 4.16E+00 1.54E+01 TM 16 24421 07/12/95 I-131 -2.83E-02 4.39E-02 0.25E+00 TM 16 24421 07/12/95 K-40 1.84E+03 5.68E+01 5.58E+01

TM 16 24421 07/12/95 Mn-54 -1.65E+00 1.09E+00 4.18E+00 TM 16 24421 07/12/95 Ru-103 -7.23E-02 1.38E+00 5.01E+00 TM 16 24421 07/12/95 Ru-106 -1.53E+01 1.05E+01 4.06E+01 TM 16 24421 07/12/95 Sb-124 -0.80E+00 2.12E+00 8.35E+00 TM 16 24421 07/12/95 Se-75 -1.89E+00 1.50E+00 5.33E+00 TM 16 24421 07/12/95 En-65 -4.63E+00 3.14E+00 1.18E+01 TM 16 24421 07/12/95 Zr-95 -1.45E+00 2.23E+00 7.91E+00 TM 16 24694 07/26/95 AcTh228 5.11E+00 6.52E+00 2.19E+01 TM 16 24694 07/26/95 Ag-110M -0.52E+00 2.26E+00 8.19E400 TM 16 24694 07/26/95 Ba-140 2.40E+00 2.56E+00 8.87E+00 TM 16 24694 07/26/95 Be-7 0.)0E+00 1.34E+01 4.84E+01 TM 16 24694 07/26/95 Ce-141 0. 3E+00 2.62E+00 8.67E+00 TM 16 24694 07/26/95 Ce-144 1.63R601 9.65E+00 3.02E+01 TM 16 24694 07/26/95 Co-57 1.?sE+00 1.26E+00 4.02E+00 TM 16 24694 07/26/95 Co-58 2.12E+00 1.62E+00 5.28E+00 TM 16 24694 07/26/95 Co-60 -0.99E+00 1.72E+00 6.84E+00 TM 16 24694 07/26/95 Cr-51 b.35E+00 1.48E+01 5.14E+01 TM 16 24694 07/26/95 Cs-134 . 35E+00 1.55E+00 5.35E+00 TM 16 24694 07/26/95 Cs-137 4.32E+00 2.38E+00 8.79E+00 TM 16 24694 07/26/95 Fe-59 -1 31E+01 6.59E+00 2.67E+01 TM 16 24694 07/26/95 I-131 -1.76E-02 2.72E-02 0.15E+00 TM 16 24694 07/26/95 K-40 1.93E+03 8.31E+01 8.63E+01

TM 16 24694 07/26/95 Mn-54 0.65E+00 1.55E+00 5.40E+00 TM 16 24694 07/26/95 Ru-103 -0.20E+00 1.76E+00 6.36E+00 TM 16 24694 07/26/95 Ru-106 7.26E+00 1.28E+01 4.67E+01 TM 16 24694 07/26/95 Sb-124 -1.29E+00 2.75E+00- 1.20E+01 TM 16 24694 07/26/95 Se-75 2.48E+00 1.86E+00 5.93E+00 TM 16 24694 07/26/95 Zn-65 3.45E+00 4.82%+00 1.67E+01 TM 16 24694 07/26/95 Zr-95 7.21E+00 3.16E400 1.02E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

~ - _ .- . - ~ - - - - . - -- - _ - - . . ~ . . _ - . - . - - . - - - ~ ~ . - -

2-V l

8eabrook Station Radiological Environmental Data i- (January - December 1995)

SAMPLE CONC. STD DEV. MDC i TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pCi/kg) (pci/kg) l l

! TM 16 24867 08/09/95 AcTh228 9.26E+00 7.05E+00 2.36E+01

! TM 16 24867 08/09/95 AS-110M 3.22E+00 2.73E+00 9.23E+00 TM 16 24867 08/09/95 Du -140 1.54E+00 2.87E+00 1.08E+01 TM 16 24867 08/09/95 De " 1.05E+01 1.52E+01 5.43E+01 g TM 16 24867 08/09/95 Co-141 -4.07E+00 3.18E+00 1.13E+01 TM 16 24867 08/09/95 Co-144 8.73E+00 1.21E+01 4.07E+01 TM 16 24867 08/09/95 Co-57 -1.05E+00 1.58E+00 5.52E+00 1 TM 16 24867 08/69/95 Co-58 -0.44E+00 2.16E+00 7.89E+00 y TM 16 24867 08/(9/95 Co-60 -2.44E+00 2.39E+00 9.38E+00 TM 16 24867 08/09/95 Cr-51 3.16E+01 1.68E+01 5.46E+01

-2.42E+00 1.61E+00 6.09E+00 TM 16 24867 08/09/95 Cs-134 TM 16 24867 08/09/95 Cs-137 3.56E+00 1.785+00 5.48E+00 TM 16 24867 08/09/95 Fe-59 3.59E+00 6.05E+00 2.10E+01 TM- 16 24867 08/09/95 I-131 6.79E-02 7.75E-02 0.26E+00 TM 16 24867 08/09/95 K-40 1.88E+03 8.41E+01 7.96E+01

TM 16 24867 08/09/95 Mn-54 0.49E+00 1.66E+00 6.02E+00 TM 16 24867 08/09/95 Ru-103 1.98E+00 1.97E+00 6.91E+00

TM 16 24867 08/09/95 Ru-106 2.56E+00 1.36E+01 4.80E+01 TM 16 24867 08/09/95 sb-124 0.19E+00 4.21E+00 1.67E+01

} 7.67E+00 4 TM 16 24867 08/09/95 Se-75 -1.21E+00 2.14E+00 TM 16 24867 08/09/95 En-65 -1.25E+01 5.57E+00 2.27E+01 TM 16 24867 08/09/95 Er-95 2.24E+00 3.53E+00 1.23E+01 TM 16 25111 08/23/95 AcTh228 0.93E+00 4.70E+00 1.66E+01

, TM 16 25111 08/23/95 Ag-110M -0.18E+00 1.74E+00 6.25E+00 l' l TM 16 25111 .08/23/95 Ba-140 -6.51E+00 3.05E+00 1.37E+01 i TM 16 25111 08/23/95 Be-7 -8.84E+00 9.10E+00 3.37E+01

TM 16 25111 08/23/95 Co-141 0.65E+00 2.02E+00 6.55E+00 i TM 16 25111 08/23/95 Co-144 7.00E+00 6.87E+00 2.19E+01 TM 16 25111 08/23/95 Co-57 -0.53E+00 0.84E+00 2.77E+00

, TN 16 25111 08/23/95 Co-58 -1.22E+00 1.31E+00 4.72E+00

TM 16 25111 08/23/95 Co-60 0.70E+00 1.50E+00 5.42E+00 i- TM 16 25111 08/23/95 Cr-51 8.12E+00 1.18E+01 4.01E+01 TM 16 25111 08/23/95 Cs-134 -0.61E+GO 1.05E+00 3.94E+00 TM 16 25111 08/23/95 Cs-137 2.30E+00 1.34E+00 4.53E+00 TM 16 25111 08/23/95 Fe-59 7.46E+00 4.76E+00 1.61E+01 TM 16 25111 08/23/95 I-131 2.82E-02 5.61E-02 0.21E+00 TM- 16 25111 08/23/95 K-40 1.89E+03 6.07E+01 6.57E+01

i TM 16 25111 08/23/95 Mn-54 -1.32E+00 1.06E+00 3.94E+00 TM 16 25111 08/23/95 Ru-103 -1.14E+00 1.39E+00 5.04E+00 TM 16 25111 08/23/95 Ru-106 -9.08E+00 1.06E+01 4.03E+01 TM 16 25111 08/23/95 Sb-124 2.78E+00 2.23E+00 7.57E+00

< TM 16 25111 08/23/95 Se-75 -0.48E+00 1.29E+00 4.35E+00 TM 16 25111 08/23/95 En-65 1.56E+00 3.17E+00 1.10E+01 TM 16 25111 08/23/95 Er-95 -1.47E+00 2.13E+00 7.65E+00 TM. 16 25297 09/06/95 AcTh228 1.93E+00 4.97E+00 1.73E+01 TM 16 25297 09/06/95 Ag-110M 0.18E+00 1.63E+00 5.81E+00 TM 16 25297 09/06/95 Ba-140 2.98E+00 1.66E+00 5.26E+00 TM 16 25297 09/06/95 Be-7 -9.25E+00 9.40E+00 3.46E+01 TM 16 25297 09/06/95 Co-141 -1.60E+00 1.88E+00 6.29E+00 TM 16 25297 09/06/95 Co-144 0.83E+00 6.70E+00 2.18E+01 TM 16 25297 09/06/95 Co-57 1.95E-02 0.84E+00 2.74E+00 TM 16 25297 09/06/95 Co-58 -0.88E+00 1.16E+00 4.21E+00 TM 16 25297 09/06/95 Co-60 -0.31E+00 1.48E+00 5.55E+00

-

Radioactivity detected-(i.e., Concentration is > 3 Std. Deviations),

i J

. - , m-, ,-.e- . . - - ,. r - ,.,,..-r - , . , . . ,w- -vr- - -, , , ,

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) l TM 16 25297 09/06/95 Cr-51 5.17E+00 1.12E+01 3.83E+01 l TM 16 25297 09/06/95 Cs-134 -0.19E+00 1.98E+00 6.07E+00 i TM 16 25297 09/06/95 Cs-137 3.26E+00 1.34E+00 4.39E+00 TM 16 25297 09/06/95 Fe-59 7.44E+00 4.08E+00 1.35E+01 '

TM 16 25297 09/06/95 I-131 -4.50E-02 4.51E-02 0.28E+00 1 TM 16 25297 09/06/95 K-40 1.81E+03 5.93E+01 6.30E+01 * )

TM 16 25297 09/06/95 Mn-54 9.23E-02 1.07E+00 3.73E+00 TM 16 25297 09/06/95 Ru-103 -2.99E+00 1.25E+00 4.79E+00 TM 16 25297 09/06/95 Ru-106 2.20E+01 1.02E+01 3.38E+01 i TM 16 25297 09/06/95 Sb-124 0.00E+00 2.61E+00 9.93E+00 J TM 16 25297 09/06/95 Se-75 0.73E+00 1.25E+00 4.08E+00 TM 16 25297 09/06/95 Zn-65 0.93E+00 3.35E+00 1.17E+01 TM 16 25297 09/06/95 Zr-95 -2.45E+00 2.05E+00 7.53E+00 TM 16 25546 09/20/95 AcTh228 -1.19E+00 5.87E+00 2.15E+01 l TM 16 25546 09/20/95 Ag-110M -0.56E+00 2.04E+00 7.59E+00 i TM 16 25546 09/20/95 Ba-140 -1.50E+00 1.87E+00 7.96E+00 !

TM 16 25546 09/20/95 Be-7 1.11E+01 1.40E+01 4.95E+01 l TM 16 25546 09/20/95 Co-141 1.20E+00 2.57E+00 8.36E+00 )

TM 16 25546 09/20/95 Ce-144 2.55E+00 9.80E+00 3.20E+01 1 TM 16 25546 09/20/95 Co-57 -0.48E+00 1.17E+00 3.89E+00 i TM 16 25546 09/20/95 Co-58 -2.35E+00 1.41E+00 5.54E+00 i TM 16 25546 09/20/95 Co-60 -0.48E+00 1.47E+00 5.87E+00 ,

l TM 16 25546 09/20/95 Cr-51 -1.67E+01 1.53E+01 5.55E+01 TM 16 25546 09/20/95 Cs-134 -1.40E+00 1.57E+00 6.04E+00 TM 16 25546 09/20/95 Cs-137 3.74E+00 1.48E+00 4.39E+00 TM 16 25546 09/20/95 Fe-59 1.52E+00 5.42E+00 2.00E+01 TM 16 25546 09/20/95 I-131 5.45E-02 7.31E-02 0.25E+00 TM 16 25546 09/20/95 K-40 1.77E+03 7.25E+01 7.91E+01

TM 16 25546 09/20/95 Mn-54 1.62E+00 1.58E+00 5.37E+00 TM 16 25546 09/20/95 Ru-103 -3.10E+00 1.57E+00 6.38E+00 TM 16 25546 09/20/95 Ru-106 -1.83E+01 1.50E+01 5.86E+01 TM 16 25546 09/20/95 Sb-124 -2.10E+00 3.15E+00 1.29E+01 TM 16 25546 09/20/95 Se-75 0.84E+00 1.87E+00 6.42E+00 TM 16 25546 09/20/95 Zn-65 -4.29E+00 3.60E+00 1.40E+01 TM 16 25546 09/20/95 Zr-95 3.82E+00 2.76E+00 8.92E+00 TM 16 25759 10/04/95 AcTh228 -2.90E+00 6.31E+00 2.33E+01 ,

TM 16 25759 10/04/95 Ag-110H -0.56E+00 2.00E+00 7.46E+00 !

TM 16 25759 10/04/95 Ba-140 3.39E+00 2.32E+00 7.49E+00 1 TM 16 25759 10/04/95 Be-7 1.69E+01 1.39E+01 4.81E+01 l TM 16 25759 10/04/95 Ce-141 -0.12E+00 2.44E+00 8.07E+00 TM 16 25759 10/04/95 Ce-144 0.64E+00 9.09E+00 2.99E+01 TM 16 25759 10/04/95 Co-57 -1.55E+00 1.18E+00 4.03E+00 TM 16 25759 10/04/95 Co-58 -1.35E+00 1.45E+00 5.45E+00 TM 16 25759 10/04/95 Co-60 1.73E+00 1.66E+00 5.84E+00 TM 16 25759 10/04/95 Cr-51 -2.36E+00 1.35E+01 4.79E+01 TM 16 25759 10/04/95 Cs-134 -1.65E+00 3.12E+00 9.82E+00 TM 16 25759 10/04/95 Cs-137 3.68E+00 2.21E+00 7.48E+00 TM 16 25759 10/04/95 Fe-59 -7.50E+00 5.36E+00 2.17E+01 TM 16 25759 10/04/95 I-131 -1.36E-02 4.44E-02 0.23E+00 TM 16 25759 10/04/95 K-40 1.83E+03 7.39E+01 8.21E+01

i TM 16 25759 10/04/95 Mn-54 2.88E+00 1.773+00 5.79E+00 '

TM 16 25759 10/04/95 Ru-103 -3.17E+00 1.68E+00 6.73E+00 TM 16 25759 10/04/95 Ru-106 -1.01E+01 1.36E+01 5.25E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). j 1

l l

Seabrook Stahion Padiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pCL/kg) (pci/kg)

--~~~----------------~~----------------~~~~~------~~--------------------------

TM 16 25759 10/04/95 Sb-124 -0.34E+00 2.76E+00 1.10E+01 TM 16 25759 10/04/95 Se-75 0.00E+00 1.98E+00 6.88E+00 TM 16 25759 10/04/95 En-65 0.00E+00 3.81E+00 1.38E+01 TM 16 25759 10/04/95 Zr-95 -2.10E+00 2.75E+00 1.01E+01 TM 16 26357 11/01/95 AcTh228 -4.04E+00 4.58E+00 1.65E+01 TM 16 26357 11/01/95 Ag-110M 1.35E+00 1.57E+00 5.33E+00 TM 16 26357 11/01/95 Ba-140 -1.85E+00 1.65E+00 6.52E+00 TM 16 26357 11/01/95 Be-7 -1.06E+01 9.64E+00 3.59E+01 TM 16 26357 11/01/95 Ce-141 -0.63E+00 1.80E+00 5.90E+00 TM 16 26357 11/01/95 Co-144 -9.90E+00 6.51E+00 2.18E+01 TM 16 26357 11/01/95 Co-57 0.66E+00 0.86E+00 2.73E+00 TM 16 26357 11/01/95 Co-58 0.51E+00 1.04E+00 3.50E+00 TM 16 26357 11/01/95 Co-60 6.80E-02 1.27E+00 4.64E+00 TM 16 26357 11/01/95 Cr-51 9.84E+00 1.07E+01 3.59E+01 TM 16 26357 11/01/95 Cs-134 -0.62E+00 1.13E+00 4.14E+00 TM 16 16357 11/01/95 Cs-137 5.38E+00 1.50E+00 4.83E+00

TM 16 3GJ57 11/01/95 Fe-59 2.61E+00 3.90E+00 1.38E+01 TM 16 2635! 11/01/95 I-131 0.14E+00 0.14E+00 0.46E+00 TM 16 26357 11/01/95 K-40 1.95E+03 5.26E+01 5.50E+01

TM 16 26357 11/01/95 Mn-54 0.35E+00 1.05E+00 3.65E+00 TM 16 26357 11/01/95 Ru-103 -3.30E+00 1.33E+00 5.13E+00 TM 16 26357 11/01/95 Ru-106 4.99E+00 9.57E+00 3.40E+01

TM 16 26357 11/01/95 sb-124 7.43E-02 2.29E+00 8.30E+00 TM 16 26357 11/01/95 Se-75 -1.05E+00 1.35E+00 4.71E+00 i~

TM 16 26357 11/01/95 Zn-65 -2.54E+00 2.91E+00 1.05E+01 TM 16 26357 11/01/95 Zr-95 1.02E+00 1.80E+00 6.05E+00 TM 16 26782 11/30/95 AcTh228 5.82E+00 7.00E+00 2.43E+01 TM 16 26782 11/30/95 Ag-110M 3.71E+00 2.67E+00 8.91E+00 TM 16 26782 11/30/95 Ba-140 -0.75E+00 2.94E+00 1.17E+01 TM 16 26782 11/30/95 Be-7 1.55E+01 1.47E+01 4.99E+01

TM 16 26782 11/30/95 Co-141 4.18E+00 2.79E+00 8.81E+00 TM 16 26782 11/30/95 Co-144 -7.04E+00 1.08E+01 3.62E+01 TM 16 26782 11/30/95 Co-57 0.39E+00 1.28E+00 4.21E+00 TM 16 26782 11/30/95 Co-58 -0.74E+00 1.96E+00 7.12E+00 TM 16 26782 11/30/95 Co-60 1.47E+00 2.39E+00 8.70E+00 l TM 16 26782 11/30/95 Cr-51 -7.41E+00 1.64E+01 5.92E+01 TM 16 26782 11/30/95 Cs-134 -1.62E+00 1.84E+00 7.10E+00 j TM 16 26782 11/30/95 Cs-137 -8.11E-02 2.19E+00 8.13E+00 TM 16 26782 11/30/95 Fe-59 -1.19E+00 6.17E+00 2.38E+01 TM 16 26782 11/30/95 I-131 6.74E-02 5.46E-02 0.17E+00 TM 16 26782 11/30/95 K-40 1.90E+03 8.70E+01 8.62E+01

TM 16 26782 11/30/95 Mn-54 0.61E+00 1.75E+00 6.10E+00 TM 16 26782 11/30/95 Ru-103 -2.82E+00 1.80E+00 7.05E+00 TM 16 26782 11/30/95 Ru-106 -2.00E+01 1.54E+01 6.25E+01 TM 16 26782 11/30/95 Sb-124 1.35E+00 3.30E+00 1.29E+01 TM 16 26782 11/30/95 Se-75 -0.12E+00 1.87E+00 6.37E+00 TM 16 26782 11/30/95 En-65 -1.21E+01 4.84E+00 2.01E+01 TM 16 26782 11/30/95 Zr-95 -2.89E+00 2.82E+00 1.09E+01 TM 16 27205 12/27/95 AcTh228 8.34E+00 4.28E+00 1.39E+01 TM 16 27205 12/27/95 Ag-110M -1.62E+00 1.47E+00 5.44E+00 TM 16 27205 12/27/95 Ba-140 -0.56E+00 1.85E+00 6.91E+00 TM 16 27205 12/27/95 Be-7 5.46E+00 1.08E+01 3.81E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pCi/kg) (pci/kg)

TM 16 27205 12/27/95 Co-141 1.39E+00 1.95E+00 6.25E+00 TM 16 27205 12/27/95 Co-144 -9.54E+00 6.52E+00 2.18E+01 TM 16 27205 12/27/95 Co-57 -1.12E-02 0.82E+00 2.65E+00 TM 16 27205 12/27/95 Co-58 1.28E-02 0.99E+00 3.43E+00 TM 16 27205 12/27/95 Co-60 -1.01E+00 1.44E+00 5.36E+00 TM 16 27205 12/27/95 Cr-51 -2.12E+01 1.10E+01 4.00E+01 TM 16 27205 12/27/95 Cs-134 -1.59E+00 1.96E+00 6.14E+00 TM 16 27205 12/27/95 Cs-137 5.47E+00 1.50E+00 4.83E+00

TM 16 27205 12/27/95 Fe-59 -1.53E+00 4.26E+00 1.56E+01 TM 16 27205 12/27/95 I-131 3.71E-03 6.72E-02 0.29E+00 TM 16 27205 12/27/95 K-40 2.15E+03 5.47E+01 5.06E+01

TM 16 27205 12/27/95 Mn-54 1.35E+00 1.04E+00 3.48E+00 TM 16 27205 12/27/95 Ru-103 -1.49E+00 1.32E+00 4.91E+00 TM 16 27205 12/27/95 Ru-106 2.88E+00 9.44E+00 3.39E+01 TM 16 27205 12/27/95, Sb-124 -3.79E-02 2.16E+00 7.95E+00 TM 16 27205 12/27/95 So-75 -1.31E+00 1.40E+00 4.91E+00 TM 16 27205 12/27/95 Zn-65 -6.32E+00 3.00E+00 1.13E+01 TM 16 27205 12/27/95 Zr-95 2.40E+00 1.77E+00 5.69E+00 4

l I

f

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

~~~-------~~~~--~~~----~~----------------~~---------------------

l TM 20 21090 01/11/95 AcTh228 5.83E+00 8.91E+00 3.05E+01 ,

TM 20 21090 01/11/95 Ag-110M 4.50E+00 2.62E+00 6.71E+00 i TM 20 21090 01/11/95 Ba-140 0.00E+00 3.35E+00 1.10E+01 TM 20 21090 01/11/95 Be-7 1.56E+01 1.79E+01 5.27E+01 TM 20 21090 01/11/95 Co-141 -3.22E+00 3.87E+00 1.39E+01 TM 20 21090 01/11/95 Co-144 -5.43E+00 1.20E+01 3.58E+01 TM 20 21090 01/11/95 Co-57 7.44E-02 1.52E+00 4.47E+00 TM 20 21090 01/11/95 Co-58 -2.18E+00 2.01E+00 6.91E+00 TM 20 21090 01/11/95 Co-60 -1.01E+00 2.36E+00 8.09E+00 TM 20 21090 01/11/95 Cr-51 8.84E+00 1.97E+01 6.04E+01 TM 20 21090 01/11/95 Cs-134 -2.76E+00 2.43E+00 9.08E+00 TM- 20 21090 01/11/95 Cs-137 1.26E+00 2.28E+00 6.85E+00 TM 20 21090 01/11/95 Fe-59 0.58E+00 4.37E+00 1.35E+01 TM 20 21090 01/11/95 I-131 -2.96E-02 0.13E+00 0.59E+00 TM 20 21090 01/11/95 K-40 1.40E+03 8.92E+01 1.10E+02

TM 12 0 21090 01/11/95 Mn-54 -0.75E+00 1.99E+00 6.43E+00 TM 20 21090 01/11/95 Ru-103 0.75E+00 2.18E+00 6.67E+00 TM 20 21090 01/11/95 Ru-106 -2.85E+01 1.78E+01 6.23E+01 TM 20 21090 01/11/95 Sb-124 -5.56E+00 4.39E+00 1.71E+01 TM 20 21090 01/11/95 Se-75 -0.48E+00 2.39E+00 7.10E+00 TM 20 21090 01/11/95 En-65 5.68E+00 5.15E+00 1.61E+01 TM 20 21090 01/11/95 Er-95 0.63E+00 3.36E+00 1.03E+01 TM 20 21575 02/08/95 AcTh228 -2.45E+00 3.91E+00 1.42E+01 TM 20 21575 02/08/95 Ag-110M -0.27E+00 1.46E+00 5.22E+00 i TM 20 21575 02/08/95 Ba-140 1.12E+00 2.46E+00 8.81E+00 TM 20 21575 02/08/95 Be-7 -1.39E+00 8.58E+00 3.03E+01 TM 20 21575 02/08/95 Co-141 1.52E+00 1.81E+00 5.81E+00 TM 20 21575 02/08/95 Co-144 0.52E+00 5.63E+00 1.83E+01 TM 20 21575 02/08/95 Co-57 -0.70E+00 0.72E+00 2.40E+00 TM 20 21575 02/08/95 Co-58 0.98E+00 1.01E+00 3.33E+00 TM 20 21575 02/08/95 Co-60 8.16E-02 1.11E+00 4.09E+00 TM 20 21575 02/08/95 Cr-51 -2.68E+01 1.09E+01 4.03E+01 TM 20 21575 02/08/95 Cs-134 0.77E+00 1.60E+00 4.76E+00 TM 20 21575 02/08/95 Cs-137 0.15E+00 1.03E+00 3.74E+00 TM 20 21575 02/08/95 Fe-59 -0.36E+00 3.97E+00 1.46E+01 TM 20 21575 02/08/95 I-131 -0.13E+00 4.45E-02 0.38E+00 TM 20 21575 02/08/95 K-40 1.26E+03 4.33E+01 4.94E+01

TM 20 21575 02/08/95 Mn-54 -0.36E+00 0.89E+00 3.14E+00 TM 20 21575 02/08/95 Ru-103 -1.30E+00 1.05E+00 3.89E+00 TM 20 21575 02/08/95 Ru-106 -2.62E+00 8.88E+00 3.27E+01 TM 20 21575 02/08/95 Sb-124 -2.02E+00 2.46E+00 9.71E+00 TM 20 21575 02/08/95 Se-75 -0.10E+00 1.12E+00 3.70E+00 TM 20 21575 02/08/95 En-65 0.00E+00 2.62E+00 9.25E+00 TM 20 21575 02/08/95 Er-95 0.32E+00 1.98E+00 6.74E+00 TM 20 22011 03/09/95 AcTh228 -1.18E+00 4.17E+00 1.45E+01 TM 20 22011 03/09/95 Ag-110M -1.43E+00 1.43E+00 5.15E+00 TM 20 22011 03/09/95 Ba-140 -2.37E+00 1.70E+00 6.79E+00 TM 20 22011 03/09/95 Be-7 8.16E+00 8.49E+00 2.87E+01 TM 20 22011 03/09/95 Co-141 0.17E+00 1.73E+00 5.63E+00

'TM 20 22011 03/09/95 Co-144 1.06E+00 6.02E+00 1.95E+01 TM 20 22011 03/09/95 Co-57 -1.24E+00 0.78E+00 2.61E+00 TM 20 22011 03/09/95 Co-58 -0.43E+00 1.14E+00 3.97E+00 TM 20 22011 03/09/95 Co-60 -0.57E+00 1.28E+00 4.82E+00

!' '* Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

i L___.______._ -. _ . , _ _ . . _ , _ _ , ., _m,.. ., , _

1 i

I l

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pC1/kg) (pci/kg) 1 I

TM 20 22011 03/09/95 Cr-51 2.99E+00 1.03E+01 3.51E+01 i TM 20 22011 03/09/95 Cs-134 1.34E+00 1.07E+00 3.57E+00 l TM 20 22011 03/09/95 Cs-137 1.90E+00 1.11E+00 3.75E+00 ;

TM 20 22011 03/09/95 Fe-59 0.00E+00 3.45E+00 1.24E+01 TH 20 22011 03/09/95 I-131 -3.30E-02 8.75E-02 0.44E+00 TM 20 22011 03/09/95 K-40 1.31E+03 4.65E+01 5.95E+01

TM 20 22011 03/09/95 Mn-54 -0.27E+00 0.96E+00 3.36E+00 TM 20 22011 03/09/95 Ru-103 0.87E+00 1.15E+00 3.91E+00 TM 20 22011 03/09/95 Ru-106 -8.19E+00 9.59E+00 3.60E+01 TM 20 22011 03/09/95 Sb-124 -5.70E+00 3.36E+00 1.42E+01 TM 20 22011 03/09/95 Se-75 -0.63E+00 1.14E+00 3.'82E+00 TM 20 22011 03/09/95 Zn-65 -1.01E+00 2.78E+00 9.97E+00 TM 20 22011 03/09/95 Zr-95 0.12E+00 1.94E+00 7.09E+00 TM 20 22463 04/05/95 AcTh228 5.24E+00 6.54E+00 2.27E+01 TH 20 22463 04/05/95 Ag-110M 2.00E+00 2.06E+00 7.12E+00 TM 20 22463 04/05/95 Ba-140 -0.58E+00 2.52E+00 1.01E+01 TM 20 22463 04/05/95 Be-7 -4.65E+00 1.09E+01 4.10E+01 TM 20 22463 04/05/95 Co-141 0.19E+00 2.38E+00 7.90E+00 TM 20 22463 04/05/95 Co-144 6.04E+00 8.58E+00 2.78E+01 TM 20 22463 04/05/95 Co-57 -0.67E+00 1.15E+00 3.86E+00 TM 20 22463 04/05/95 Co-58 -2.27E+00 1.50E+00 5.97E+00 TM 20 22463 04/05/95 Co-60 2.19E+00 1.90E+00 6.65E+00 TM 20 22463 04/05/95 Cr-51 -1.07E+01 1.47E+01 5.35E+01 TM 20 22463 04/05/95 Cs-134 -1.13E+00 1.38E+00 5.44E+00 TM 20 22463 04/05/95 Cs-137 0.63E+00 1.56E+00 5.77E+00 TM 20 22463 04/05/95 Fe-59 1.72E+00 3.96E+00 1.51E+01 TM 20 22463 04/05/95 I-131 6.63E-02 0.11E+00 0.38E+00 TM 20 22463 04/05/95 K-40 1.33E+03 6.94E+01 7.36E+01

TM 20 22463 04/05/95 Mn-54 -1.29E+00 1.43E+00 5.49E+00 TM 20 22463 04/05/95 Ru-103 -0.87E+00 1.50E+00 5.64E+00 TM 20 22463 04/05/95 Ru-106 2.45E+00 1.39E+01 5.18E+01 <

TM 20 22463 04/05/95 Sb-124 1.55E+00 3.45E+00 1.31E+01 l TM 20 22463 04/05/95 Se-75 -0.11E+00 1.79E+00 6.07E+00 l TM 20 22463 04/05/95 Zn-65 -1.19E+00 4.33E+00 1.61E+01 l TM 20 22463 04/05/95 Zr-95 -2.18E+00 2.76E+00 1.04E+01 TM 20 22789 04/19/95 AcTh228 3.13E+00 4.54E+00 1.58E+01 TM 20 22789 04/19/95 Ag-110M -1.61E+00 1.84E+00 6.89E+00 TM 20 22789 04/19/95 Ba-140 -0.87E+00 1.99E+00 7.73E+00 TM 20 22789 04/19/95 Be-7 -1.58E+01 1.08E+01 4.21E+01 TM 20 22789 04/19/95 Co-141 1.66E+00 2.10E+00 6.79E+00

, TM 20 22789 04/19/95 Ce-144 -1.05E+01 7.43E+00 2.52E+01 TM 20 22789 04/19/95 Co-57 -0.19E+00 0.96E+00 3.18E+00 l TM 20 22789 04/19/95 Co-58 -3.55E+00 1.23E+00 4.60E+00 <

TM 20 22789 04/19/95 Co-60 0.59E+00 1.52E+00 5.53E+00 l TM 20 22789 04/19/95 Cr-51 9.57E+00 1.23E+01 4.19E+01 TM 20 22789 04/19/95 Cs-134 -2.80E+00 1.39E+00 5.45E+00 ,

TM 20 22789 04/19/95 Co-137 0.84E+00 1.16E+00 3.89E+00 TM 20 22789 04/19/95 Fe-59 -2.46E+00 4.29E+00 1.65E+01 TM 20 22789 04/19/95 I-131 -2.30E-02 4.88E-02 0.23E+00 TM 20 22789 04/19/95 K-40 1.35E+03 5.45E+01 6.82E+01

i TM 20 22789 04/19/95 Mn-54 0.00E+00 1.37E+00 4.89E+00 TM 20 22789 04/19/95 Ru-103 0.42E+00 1.53E+00 5.49E+00 TM 20 22789 04/19/95 Ru-106 -3.31E+00 1.04E+01 3.91E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

- . - .- . - . . . - - _- - -- - - - . -. . . - --~- _ . _ .

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg)

~~~~~-----------------~~~--~~~~----~~-----------------~~-----------------

TM 20 22789 04/19/95 Sb-124 1.44E+00 2.61E+00 9.34E+00 TM 20 22789 04/19/95 so-75 2.32E+00 1.54E+00 5.10E+00 TM 20 22789 04/19/95 En-65 2.42E+00 3.03E+00 1.04E+01

' TM 20 22789 04/19/95 Er-95 1.78E+00 1.97E+00 6.56E+00 TM 20 23071 05/03/95 AcTh228 5.01E+00 6.07E+00 2.11E+01 TM 20 23071 05/03/95 Ag-110M -1.01E+00 2.30E+00 8.70E+00 TM 20 23071 05/03/95 Ba-140 1.23E+00 2.61E+00 9.75E+00

, TM 20 23071 05/03/95 Be-7 -1.73E+01 1.38E+01 5.28E+01 TM 20 23071 05/03/95 Co-141 -1.91E+00 2.47E+00 8.43E+00 4 TM 20 23071 05/03/95 Co-144 9.77E-02 8.91E+00 2.95E+01 TM 20 23071 05/03/95 Co-57 0.00E+00 1.13E+00 3.74E+00

$ TM 20 23071 05/03/95 Co-58 0.80E+00 1.40E+00 4.90E+00 l 2

TM 20 23071 05/03/95 Co-60 4.01E+00 1.78E+00 5.50E+00 j j . TM 20 23071 05/03/95 Cr-51 -1.52E+01 1.50E+01 5.54E+01

TM 20 23071 05/03/95 Co-134 -0.18E+03 1.55E+00 5.81E+00

- TM 20 23071 05/03/95 Cs-137 2.41E+00 1.65E+00 5.64E+00 TM 20 23071 05/03/95 Fe-59 -1.05E+00 4.72E+00 1.87E+01 TM 20 23071 05/03/95 I-131 -1.04E-92 9.24E-02 0.43E+00 TM 20 23071 05/03/95 K-40 1.27E+03 6.90E+01 8.43E+01

TM 20 23071 05/03/95 Mn-54 -0.31E+00 1.36E+00 5.04E+00 TM 20 23071 05/03/95 Ru-103 -1.00E+00 1.45E+00 5.54E+00 ;

TM 20 23071 05/03/95 Ru-106 6.45E+00 1.39E+01 5.09E+01

. TM 20 23071 05/03/95 Sb-124 -4.62E+00 3.06E+00 1.47E+01

! TM 20 23071 05/03/95 Se-75 -3.87E+00 1.69E+00 6.29E+00

TM 20 23071 05/03/95 En-65 7.53E+00 3.80E+00 1.20E+01 TM 20 23071 05/03/95 Er-95 0.45E+00 2.67E+00 9.52E+00 j

TM 20 23386 05/17/95 AcTh228 -2.23E+00 6.00E+00 2.22E+01 g

1 TM 20 23386 05/17/95 Ag-110M 2.68E+00 2.23E+00 7.58E+00

! TM 20 23386 05/17/95 Ba-140 -1.36E+00 1.71E&00 7.24E+00 ,

l TM 20 23386 05/17/95 Be-7 -1.34E+01 1.20E+01 4.71E+01 j

! TM 20 23386 05/17/95 Co-141 -0.76E+00 2.39E+00 8.00E+00 i I

TM 20 23386 05/17/95 Co-144 -3.54E+00 8.94E+00 2.99E+01 TM 20 23386 05/17/95 Co-57 -0.27E+00 1.10E+00 3.68E+00 TM 20 23386 05/17/95 Co-58 2.23E+00 1.43E+00 4.57E+00

, TM 20 23386 05/17/95 Co-60 -2.44E+00 1.84E+00 7.59E+00

, TM 20 23386 05/17/95 Cr-51 -5.79E+00 1.38E+01 4.92E+01 TM 20 23386 05/17/95 Cs-134 0.14E+00 3.28E+00 1.22E+01 l 1.40E+00 4.66E+00 TM 20 23386 05/17/95 Cs-137 1.44E+00

. TM 20 23386 05/17/95 Fe-59 -5.08E+00 5.17E+00 2.06E+01 TM 20 23386 05/17/95 I-131 -1.16E-02 5.28E-02 0.25E+00 l 6.42E+01

TM 20 23386 05/17/95 K-40 1.29E+03 8.65E+01

TM 20 23386 05/17/95 Mn-54 -0.63E+00 1.40E+00 5.29E+00 TM 20 23386 05/17/95 Ru-103 -2.82E+00 1.56E+00 6.27E+00 TM 20 23386 05/17/95 Ru-106 1.17E+01 1.26E+01 4.47E+01 TM 20 23386 05/17/95 Sb-124 -3.08E+00 2.52E+00 1.15E+01 TM 20 23386 05/17/95 Se-75 -3.27E+00 1.89E+00 7.00E+00 TM 20 23386 05/17/95 Zn-65 7.61E+00 6.44E+00 2.44E+01 TM 20 23386 05/17/95 Er-95 2.34E+00 2.60E+00 8.69E+00 TM 20' 23645 05/31/95 AcTh228 6.89E+00 6.45E+00 2.21E+01 TM 20 23645 05/31/95 Ag-110M 6.24E+00 2.48E+00 7.43E+00 1 TM 20 23645 05/31/95 Ba-140 -1.66E+00 2.33E+00 1.03E+01 l TM 20 23645 05/31/95 Be-7 -4.11E+00 1.56E+01 5.89E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i i l

Seabrook Station Radiological Environmental Data '

(January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE- STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg) ,

TM 20 23645 05/31/95 Co-141 2.07E+00 2.96E+00 1.00E+01 TM 20 23645 05/31/95 Co-144 2.13E+00 1.19E+01 4.09E+01 TM 20 23645 05/31/95 Co-57 0.64E+00 1.55E+00 5.28E+00 TM 20 23645 05/31/95 Co-58 0.37E+00 1.83E+00 6.66E+00 TH 20 23645 05/31/95 Co-60 4.44E+00 2.22E+00 6.97E+00 TM 20 23645 05/31/95 Cr-51 3.05E+00 1.75E+01 6.13E+01 TM 20 -23645 05/31/95 Cs-134 -1.52E+00 1.46E+00 5.51E+00 TM 20 23645 05/31/05 Cs-137 2.82E+00 1.62E+00 5.085+00 TM 20 23645 05/31/55 Fe-59 2.02E+00 5.93E+00 2.11E+01 TM 20 23645 05/31/S5 I-131 -3.87E-02 1.86E-02 0.14E+00 TM 20 23645 05/31/95 K-40 1.34E+03 7.45E+01 7.71E+01

TM 20 23645 05/31/95 Mn-54 0.00E+00 1.8i,E+00 6.74E+00 TM 20- 23645 05/31/95 Ru-103 -1.671+00 1.94E+00 7.53E+00 TM 20 23645 05/31/95 Ru-106 -7.83E+00 ' 1.30E+01- 4.90E+01 TM 20 23645 05/31/95 Sb-124 -5.52E+00 3.84E+00 1.79E+01

" TM 20 23645 05/31/95 Se-75 0.55E+00 2.17E+00 7.57E+00 TM 20 23645 05/31/95 En-65 -4.97E+00 4.54E+00 1.83E+01 TM 20 23645 05/31/95 Er-95 3.54E+00 3.34E+00 1.14E+01 TM 20 23982 06/14/95 AcTh228 -9.59E+00 7.04E+00 2.78E+01 TM 20 23982 06/14/95 Ag-110M 3.67E+00 2.39E+00 7.86E+00 TM 20 23982 06/14/95 Ba-140 -2.83E+00 2.24E+00 1.06E+01 TM 20 23982 06/14/95. Be-7 -9.69E+00 1.30E+01 4.96E+01 TM 20 23962 06/14/95 Co-141 -0.75E+00 2.59E+00 8.69E+00 TM 20 23982 06/14/95 Co-144 2.66E+00 8.97E+00 2.96E+01 TM 20 23982 06/14/95 Co-57 -0.28E+00 1.23E+00 4.10E+00 TM 20 23982 06/14/95 Co-58 0.17E+00 1.61E+00 5.80E+00 TM 20 23982 06/14/95 Co-60 0.86E+00 2.11E+00 7.85E+00 TM 20 23982 06/14/95 Cr-51 -3.23F+01 1.61E+01 6.19E+01 TM 20 23982 06/14/95 Cs-134 -1.96E+00 1.78E+00 7.02E+00 TM 20 23982 06/14/95 Cs-137 0.88E+00 2.00E+00 7.30E+00 TM 20 23982 06/14/95 Fe-59 -1.34E+00 4.87E+00 1.96E+01 TM 20 23982 06/14/95 I-131 2.18E-02 7.56E-02 0.31E+00 4

TM 20 23982 06/14/95 K-40 1.35E+03 7.60E+01 1.07E+02

TM 20 23982 06/14/95 Mn-54 -0.13E+00 1.31E+00 4.89E+00 4 TM 20 23982 06/14/95 Ru-103 -3.78E+00 1.68E+00 6.89E+00

TM 20 23982 06/14/95 Ru-106 -3.48E+01 1.64E+01 6.84E+01 i TM 20 23982 06/14/95 Sb-124 -2.05E+00 3.84E+00 1.63E+01

. TM 20 23982 06/14/95 Se-75 1.76E+00 1.85E+00 6.02E+00 TM 20 23982 06/14/95 En-65 0.00E+00 4.33E+00 1.60E+01

. TM 20 23982 06/14/95 Zr-95 -1.46E+00 2.74E+00 1.04E+01 TM 20 24220 06/28/95 AcTh228 -1.09E+01 5.61E+00 2.27E+01 TM 20 24220 06/28/95 Ag-110M -1.72E+00 2.02E+00 7.81E+00

, TM 20 24220. 06/28/95 Ba-140 3.81E+00 1.94E+00 5.70E+00 TM 20 24220 06/28/95 Be-7 -4.36E+00 1.41E+01 5.27E+01 TM 20 24220 06/28/95 Co-141 -2.63E+00 2.42E+00 8.29E+00 TM 20 24220 06/28/95 Co-144 9.83E+00 8.57E+00 2.74E+01 TM 20 24220 06/28/95 Co-57 -0.13E+00 1.12E+00 3.70E+00 TM 20 24220 06/28/95 Co-58 -1.86E+00 1.41E+00 5.48E+00 TM 20 24220 06/28/95 Co-60 1.57E+00 1.57E+00 5.59E+00

- TM 20 24220 06/28/95 Cr-51 -9.81E+00 1.39E+01 5.04E+01 TM 20 24220 06/28/95 Cs-134 2.83E+00 2.58E+00 7.44E+00

TM 20 24220 06/28/95 Co-137 0.24E+00 1.58E+00 5.50E+00

TM 20 24220 06/28/95 Fe-59 -1.76E+00 4.84E+00 1.89E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

t I

e d

---wn - + -,,n-. .,n . , ,n , ,-e, .,, , , a. ,

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/kg) (pCi/kg) (pC1/kg)

~~---------------

TM 20 24220 06/28/95 I-131 3.46E-02 7.34E-02 0.29E+00 TM 20 24220 06/28/95 K-40 1.28E+03 6.41E+01 8.61E+01

TM 20 24220 06/28/95 Mn-54 0.79E+00 1.42E+00 5.03E+00 TM 20 24220 06/28/95 Ru-103 -3.17E+00 1.92E+00 7.49E+00 TM 20 24220 06/28/95 Ru-106 -1.70E+01 1.38E+01 5.48E+01 TM 20 24220 06/28/95 Sb-124 0.00E+00 3.19E+00 1.23E+01 TM 20 24220 06/28/95 Se-75 -0.14E+00 1.92E+00 6.71E+00 TM 20 24220 06/28/95 Zn-65 -5.89E+00 3.98E+00 1.56E+01 TM 20 24220 06/28/95 Zr-95 0.81E+00 2.76E+00 9.57E+00 TM 20 24422 07/12/95 AcTh228 0.25E+00 5.19E+00 1.86E+01 TM 20 24422 07/12/95 Ag-110M 0.00E+00 1.72E+00 6.26E+00 TM 20 24422 07/12/95 Ba-140 -3.50E+00 2.29E+00 1.01E+01 TM 20 24422 07/12/95 Be-7 -4.40E+00 1.08E+01 3.92E+01 TM 20 24422 07/12/95 Co-141 1.10E+00 2.21E+00 7.19E+00 TM 20 24422 07/12/95 Ce-144 -2.50E+00 6.86E+00 2.28E+01 TM 20 24422 07/12/95 Co-57 0.28E+00 0.96E+00 3.12E+00 TM 20 24422 07/12/95 Co-58 0.23E+00 1.30E+00 4.54E+00 TM 20 24422 07/12/95 Co-60 8.30E-02 1.57E+00 5.90E+00 TM 20 24422 07/12/95 Cr-51 1.71E+01 1.23E+01 4.08E+01 l TM 20 24422 07/12/95 Cs-134 -2.78E+00 1.20E+00 4.88E+00 i TM 20 24422 07/12/95 Cs-137 1.68E+00 1.31E+00 4.52E+00 ;

TM 20 24422 07/12/95 Fe-59 -7.11E+00 4.61E+00 1.88E+01 TM 20 24422 07/12/95 I-131 -0.11E+00 5.62E-02 0.41E+00 Th 20 24422 07/12/95 K-40 1.33E+03 5.64E+01 5.49E+01

l TM 20 24422 07/12/95 Mn-54 1.38E+00 1.20E+00 3.93E+00 i TM 20 24422 07/12/95 Ru-103 9.99E-02 1.34E+00 4.78E+00 TM 20 24422 07/12/95 Ru-106 -5.64E+00 1.13E+01 4.30E+01 TM 20 24422 07/12/95 Sb-124 2.57E+00 3.15E+00 1.12E+01 TM 20 24422 07/12/95 Se-75 0.75E+00 1.34E+00 4.42E+00 l TM 20 24422 07/12/95 Zn-65 4.07E+00 3.53E+00 1.19E+01 l TM 20 24422 07/12/95 Zr-95 5.11E+00 2.33E+00 7.08E+00 i l

TM 20 24695 07/26/95 AcTh228 -0.90E+00 6.04E+00 2.25E+01 TH 20 24695 07/26/95 Ag-110M -3.68E+00 2.31E+00 9.38E+00 TM 20 24695 07/26/95 Ba-140 3.40E+00 2.73E+00 9.45E+00 TM 20 24695 07/26/95 Be-7 1.28E+01 1.38E+01 4.89E+01 TM 20 24695 07/26/95 Co-141 4.42E+00 3.17E+00 1.05E+01 TM 20 24695 07/26/95 Co-144 -7.82E+00 1.10E+01 3.87E+01 ;

TM 20 24695 07/26/95 Co-57 0.17E+00 1.47E+00 5.06E+00 TM 20 24695 07/26/95 Co-58 0.25E+00 2.10E+00 7.55E+00 TM 20 24695 07/26/95 Co-60 2.29E+00 2.23E+00 7.65E+00 TM 20 24695 07/26/95 Cr-51 -1.72E+01 1.48E+01 5.52E+01 TM 20 24695 07/26/95 Cs-134 -0.63E+00 1.56E+00 5.59E+00 TM 20 24695 07/26/95 Cs-137 4.23E+00 1.66E+00 4.85E+00 TM 20 24695 07/26/95 Fe-59 4.57E+00 5.74E+00 1.96E+01 TM 20 24695 07/26/95 I-131 5.66E-02 6.45E-02 0.22E+00 TM 20 24695 07/26/95 K-40 1.31E+03 7.15E+01 9.10E+01

TM 20 24695 07/26/95 Mn-54 -0.71E+00 1.77E+00 6.61E+00 TM 20 24695 07/26/95 Ru-103 -0.59E+00 2.09E+00 7.78E+00 TM 20 24695 07/26/95 Ru-106 -9.84E+00 1.42E+01 5.24E+01 TM 20 24695 07/26/95 Sb-124 -2.82E+00 4.21E+00 1.77E+01 TM 20 24695 07/26/95 Se-75 -1.17E+00 2.03E+00 7.29E+00 TM 20 24695 07/26/95 Zn-65 -1.93E+00 4.57E+00 1.75E+01 TM 20 24695 07/26/95 Zr-95 -3.48E+00 2.95E+00 1.17E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

-~ ._-. ..-.--_-- _- --. .-- . . . - .. - . - . . . . - . .. --

1.

seabrook station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC f (pci/kg) (pci/kg)

TYPE STA. L8N END DATE NUCLIDE (pci/kg) l TM 20 24868 08/09/95 AcTh228 3.75E+00 4.89E+00 1.70E+01 1 TM 20 24868 08/09/95 Ag-110M -0.50E+00 1.91E+00 7.075+00 i

, TM 20 24868 08/09/95 Ba-140 0.99E+00 2.15E+00 7.80E+00

! TM 20 24868 08/09/95 Be-7 2.29E+01 1.29E+01 4.34E+01 TM 20 24868 08/09/95 Co-141 2.11E+00 2.46E+00 7.95E+00 ,

i TM 20 24868 08/09/95 Co-144 -1.72E+00 8.45E+00 2.80E+01

! TM 20 24868 08/09/95 Co-57 -0.72E+00 1.02E+00 3.43E+00 i

. TM 20 24868 08/09/95 Co-58 -0.44E+00 1.25E+00 4.56E+00 .l

TM 20 24868 08/09/95 Co-60 2.40E+00 1.70E+00 5.79E+00 l

TM 20 24868 08/09/95 Cx-51 2.19E+00 1.44E+01 4.99E+01. l

TM 20 24868 08/09/95 Co-134 1.39E+00 1.33E+00 4.67E+00 l TM 20 24868 08/09/95 Cs-137 0.89E+00 1.31E+00 4.43E+00 4 l TM 20 24868 08/09/95 Fe-59 3.43E+00 4.97E+00 1.78E+01

+ TM 20 24868 08/09/95. I-131 -9.26E-03 5.09E-02 0.23E+00 TM 20 24868 08/09/95 K-40 1.26E+03 5.97E+01 8.30E+01

TM 20 24868 08/09/95 Mn-54 -2.08E+00 1.38E+00 5.43E+00 l TM 20 24868 08/09/95 Ru-103 1.16E+00 1.81E+00 6.42E+00 TM 20 24868 08/09/95 Ru-106 -8.15E+00 1.27E+01 4.87E+01 {

2.46E+00 9.65E+00

. TM 20 24868 08/09/95 sb-124 0.16E+00 <

1 TM 20 24868 08/09/95 so-75 -2.15E+00 1.69E+00 6.18E+00 .

j TM 20 24868 08/09/95 En-65 -6.02E+00 3.28E+00 1.32E+01 )

j TM 20 24868 08/09/95 Er-95 -2.79E+00 2.48E+00 9.29E+00 i TM 20 25112 08/23/95 AcTh228 4.33E+00 4.64E+00 1.55E+01 1.52E+00 5.41E+00 ]

, TM 20 25112 08/23/95 Ag 110M -0.24E+00 ,

' TM 20 25112 08/23/95 Ba-140 -2.39E+00 2.07E+00 8.60E+00 l 1 TM 20 25112 08/23/95 Be-7 0.00E+00 1.08E+01 3.82E+01

TM 20 25112 08/23/95 Co-141 -1.25E+00 2.07E+00 6.89E+00 TM 20 25112 08/23/95 Co-144 1.22E+01 6.98E+00 2.18E+01 j TM 20 25112 08/23/95 Co-57 0.38E+00 0.93E+00 3.01E+00 TM 20 25112 08/23/95 Co-58 -5.49E-02 1.25E+00 4.39E+00 3

TM 20 25112 08/23/95 Co-60 1.15E+00 1.38E+00 4.80E+00 TM 20 25112 08/23/95 Cr-51 0.00E+00 1.21E+01 4.23E+01 TM 20 25112 08/23/95 Cs-134 -2.25E+00 1.12E+00 4.35E+00 4.59E+00

T!t 20 25112 08/23/95 Cs-137 2.32E+00 1.36E+00

. TM 20 25112 08/23/95 Fe-59 -0.54E+00 4.28E+00 1.57E+01 TM 20 25112 08/23/95 I-131 -5.72E-02 3.25E-02 0.23E+00 3 TM 20 25112 08/23/95 K-40 1.39E+03 5.48E+01 6.68E+01

1 TM 20 25112 08/23/95 Hn-54 -1.25E+00 1.18E+00 4.32E+00 l TM 20 25112 08/23/95 Ru-103 1.22E+00 1.37E+00 4.65E+00 TM 20 25112 08/23/95 Ru-106 -1.33E+01 1.07E+01 4.16E+01 TM 20 25112 08/23/95 sb-124 -0.51E+00 2.38E+00 9.32E+00 TM 20 25112 08/23/95 so-75 1.48E+00 1.36E+00 4.36E+00 TM 20 25112 08/23/95 En-65 3.38E+00 3.17E+00 1.07E+01 TM 20 25112 08/23/95 Er-95 -1.01E+00 2.55E+00 9.55E+00 l TM 20 25298 09/06/95 AcTh228 3.68E+00 4.65E+00 1.59E+01

! TM 20 25298 09/06/95 Ag-110M O.00E+00 1.69E+00 6.05E+00 TM 20 25298 09/06/95 Ba-140 -1.63E+00 2.04E+00 8.02E+00 TM 20 25298 09/06/95 Be-7 9.12E+00 9.27E+00 3.14E+01 6.03E+00 4

TM 20 25298 09/06/95 Co-141 -0.75E+00 1.83E+00 j TM 20 25298 09/06/95 Co-144 1.32E+00 6.46E+00 2.10E+01 TM 20 25298 09/06/95 Co-57 1.68E+00 0.85E+00 2.64E+00

, TM 20 25298 09/06/95 Co-58 -1.15E+00 1.19E+00 4.33E+00

] TM 20 25298' 09/06/95 Co-60 0.13E+00 1.26E+00 4.72E+00 i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

~

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg)

TM 20 25298 09/06/95 Cr-51 -9.44E+00 1.03E+01 3.71E+01 TM 20 25298 09/06/95 Cs-134 -0.45E+00 1.19E+00 4.40E+00 TM 20 25298 09/06/95 Cs-137 1.60E+00 1.28E+00 4.42E+00 TM 20 25298 09/06/95 Fe-59 2.04E+00 4.14E+00 1.49E+01 TM 20 25298 09/06/95 I-131 0.16E+00 0.11E+00 0.33E+00 TM 20 25298 09/06/95 K-40 1.35E+03 5.14E+01 5.93E+01

TM 20 25298 09/06/95 Mn-54 1.47E+00 1.17E+00 3.79E+00 TM 20 25298 09/06/95 Ru-103 -1.69E+00 1.22E+00 4.53E+00 TM 20 25298 09/06/95 Ru-106 -1.69E+01 9.73E+00 3.86E+01 TM 20 25298 09/06/95 Sb-124 0.00E+00 2.39E+00 9.18E+00

TM 20 25298 09/06/95 Se-75 -2.27E+00 1.25E+00 4.38E+00 TM 20 25298 09/06/95 Zn-65 -2.98E+00 3.11E+00 1.15E+01 TM 20 25298 09/06/95 Zr-95 -4.10E+00 1.89E+00 7.33E+00 TM 20 25547 09/20/95 AcTh228 9.40E+00 5.47E+00 1.77E+01 TM 20 25547 09/20/95 Ag-110M 0.33E+00 2.34E+00 8.54E+00 TM 20 25547 09/20/95 Ba-140 1.72E+00 2.68E+00 9.80E+00 TM 20 25547 09/20/95 Be-7 7.86E+00 1.19E+01 4.15E+01 TM 20 25547 09/20/95 Co-141 0.30E+00 2.52E+00 8.31E+00 TM 20 25547 09/20/95 Ce-144 -2.45E+01 8.44E+00 3.06E+01

, TM 20 25547 09/20/95 Co-57 -0.54E+00 1.15E+00 3.86E+00 TM 20 25547 09/20/95 Co-58 0.67E+00 1.53E+00 5.34E+00 TM 20 25547 09/20/95 Co-60 1.91E+00 1.67E+00 5.87E+00 TM 20 25547 09/20/95 Cr-51 -1.53E+01 1.51E+01 5.57E+01 TM 20 25547 09/20/95 Cs-134 2.48E+00 1.57E+00 5.35E+00 TM 20 25547 09/20/95 Cs-137 -1.17E+00 1.47E+00 5.91E+00 TM 20 25547 09/20/95 Fe-59 -1.33E+00 5.96E+00 2.29E+01 TM 20 25547 09/20/95 I-131 9.10E-02 7.61E-02 0.24E+00 TM 20 25547 09/20/95 K-40 1.31E+03 6.91E+01 7.63E+01

TM 20 25547 09/20/95 Mn-54 0.46E+00 1.90E+00 6.69E+00 TM 20 25547 09/20/95 Ru-103 -1.55E+00 1.59E+00 6.09E+00 TH 20 25547 09/20/95 Ru-106 -1.81E+01 1.28E+01 5.30E+01 TM 20 25547 09/20/95 Sb-124 -2.77E+00 3.81E+00 1.61E+01 TM 20 25547 09/20/95 Se-75 1.57E+00 1.60E+00 5.20E+00 TM 20 25547 09/20/95 Zn-65 -4.69E+00 4.10E+00 1.61E+01 TM 20 25547 09/20/95 Zr-95 -1.52E+00 2.74E+00 1.02E+01 TM 20 25760 10/04/95 AcTh228 7.76E+00 6.72E+00 2.28E+01 TM 20 25760 10/04/95 Ag-110M -1.32E+00 2.72E+00 1.03E+01 TM 20 25760 10/04/95 Ba-140 3.37E+00 3.09E+00 1.07E+01 TM 20 25760 10/04/95 Be-7 3.79E+00 1.30E+01 4.67E+01 TM 20 25760 10/04/95 Ce-141 -1.51E+00 2.72E+00 9.18E+00 TH 20 25760 10/04/95 Co-144 -6.51E+00 9.64E+00 3.27E+01 i TM 20 25760 10/04/95 Co-57 -0.58E+00 1.21E+00 4.07E+00 ;

TM 20 25760 10/04/95 Co-58 -0.81E+00 1.60E+00 6.02E+00 TM 20 25760 10/04/95 Co-60 -0.18E+00 1.96E+00 7.67E+00 TM 20 25760 10/04/95 Cr-51 -9.13E+00 1.52E+01 5.56E+01 TM 20 25760 10/04/95 Cs-134 -2.99E+00 1.55E+00 6.46E+00 TM 20 25760 10/04/95 Cs-137 0.00E+00 1.90E+00 7.13E+00 TM 20 25760 10/04/95 Fe-59 -2.18E+00 6.20E+00 2.42E+01 TH 20 25760 10/04/95 I-131 -5.63E-02 3.07E-02 0.22E+00 ;

TM 20 25760 10/04/95 K-40 1.35E+03 7.51E+01 9.40E+01

TM 20 25760 10/04/95 Mn-54 -0.67E+00 1.54E+00 5.75E+00 TM 20 25760 10/04/95 Ru-103 0.88E+00 1.93E+00 6.77E+00 !

Ru-106 -9.22E+00 1.43E+01 3.65E+01 I

.TM 20 25760 10/04/95

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l I

l

Seabrook Statien Radiological Environmental Data (January - December 1995) ,

ShMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

~~~------------------------------~~------~~---

TM 20' 25760 10/04/95 Sb-124 -2.35E+00 2.57E+00 1.27E+01 TM 20 25760 10/04/95 So-75 0.36E+00 1.72E+00 5.82E+00 TM- 20~ 25760 10/04/95 .En-65 -2.57E+00 4.27E+00 1.64E+01 TM 20 25760 10/04/95 Er-95 -0.76E+00 3.05E+00 1.11E+01 TM 20 26358 11/01/95 AcTh228 5.06E+00 4.93E+00 1.67E+01 TM 20 26358 11/01/95 Ag-110M O.42E+00 1.70E+00 6.01E+00 TM 20 26358 11/01/95 Ba-140 3.05E+00 2.02E+00 6.64E+00 TM 20 26358 11/01/95 Be-7 1.11E+01 9.70E+00 3.26E+01 TM '20 26358 11/01/95 Co-141 1.75E+00 1.87E+00 5.98E+00 TM 20 26358 11/01/95 Co-144 -7.74E+00 6.52E+00 2.19E+01 TM 20 26358 11/01/95 Co-57 0.64E+00 0.85E+00 2.72E+00

TM 20 26358 11/01/95 Co-58 '1.20E+00 1.15E+00 3.78E+00 TM 20 26358 11/01/95 Co-60 1.36E+00 1.46E+00 5.14E+00 TM 20 26358 11/01/95 Cr-51 1.01E+01 1.20E+01 4.05E+01 TM 20 26358 11/01/95 Cs-134 0.74E+00 2.18E+00 6.54E+00

'TM 20 26358 11/01/95 Cs-137 2.94E+00 1.20E+00 3.91E+00 TM 20 26358 11/01/95 Fe-59 -5.14E+00 4.77E+00 1.83E+01 TM 20 26358 11/01/95 I-131 0.30E+00 0.20E+00 0.47E+00 TM 20 26358 11/01/95 K-40 1.36E+03 5.24E+01 6.62E+01

TM 20 '26358 11/01/95 Mn-54 -0.93E+00 1.16E+00 4.16E+00 TM 20 26358 11/01/95 Ru-103 0.33E+00 1.22E+00 4.26E+00 TM 20 26358 11/01/95 Ru-106 1.16E+01 1.07E+01 3.74E+01 TM 20 26358 11/01/95 Sb-124 1.45E+00 2.63E+00 9.54E+00 TM 20 26358 11/01/95 Se-75 1.25E+00 1.22E+00 3.92E+00 TM 20 26358 11/01/95 En-65 -1.23E+00 2.89E+00 1.06E+01 TM 20 26358 11/01/95 Zr-95 1.49E+00 1.86E+00 6.22E+00 TM 20 26783 11/30/95 AcTh228 6.52E+00 5.17E+00 1.74E+01 TM 20 26783 11/30/95 Ag-110M 0.00E+00 2.00E+00 7.32E+00 TM 20 26783 11/30/95 Ba-140 -2.71E+00 1.80E+00 8.05E+00 TM 20 26783 11/30/95 Be-7 -0.66E+00 1.30E+01 4.82E+01 TM 20 26783 11/30/95 Co-141 0.73E+00 2.29E+00 7.50E+00 TM 20 26783 11/30/95 Co-144 -3.36E+00 8.90E+00 2.97E+01 TM 20 26783 11/30/95 Co-57 -0.44E+00 1.14E+00 3.80E+00 TM 20 26783 11/30/95 Co-58 -0.61E+00 1.42E+00 5.19E+00 TM 20 26783 11/30/95 Co-60 -0.41E+00 1.41E+00 5.64E+00 TM 20 26783 11/30/95 Cr-51 -1.69E+00 1.33E+01 4.70E+01 TM 20 26783 11/30/95 Cs-134 1.43E+00 3.20E+00 9.59E+00 TM 20 26783 11/30/95 Cs-137 0.41E+00 1.55E+09 5.35E+00 TM 20 26783 11/30/95 Fe-59 5.11E+00 5.45E+00 1.92E+01 TM 20 26783 11/30/95 I-131 3.97E-02 5.39E-02 0.20E+00 j TM 20 26783 11/30/95 K-40 1.36E+03 6.43E+01 7.79E+01

t TM 20 26783 11/30/95 Mn-54 -1.15E+00 1.58E+00 5.93E+00 l TM 20 26783' 11/30/95 Ru-103 -1.51E+00 1.58E+00 6.11E+00 t TM 20 26783 11/30/95 Ru-106 -2.04E+01 1.33E+01 5.35E+01 TM 20 26783 11/30/95 sb-124 7.38E-02 3.21E+00 1.23E+01 TM 20 26783 11/30/95 So-75 -1.11E+00 1.86E+00 6.62E+00 TM 20 26783 11/30/95 En-65 8.12E+00 6.64E+00 2.54E+01

TM- 20 26783 11/30/95 Er-95 2.65E+00 2.87E+00 9.53E+00

! TM' 20 27206 12/27/95 AcTh228 -1.53E+00 4.698+00 1.69E+01 F TM 20 27206 12/27/95 Ag-110M 1.39E+00 1.62E+00 5.57E+00

TM 20 27206 12/27/95 Ba-140 1.81E+00 2.17E+00 7.68E+00 TM 20 27206 12/27/95 Be-7 5.36E+00 9.20E+00 3.18E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook St'ation Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC T/PE STA. LSN END DATE NUCLIDE (pci/kg) (pC1/kg) (pCi/kg)

TM 20 27206 12/27/95 Co-141 -3.67E+00 2.00E+00 6.84E+00 TM 20 27206 12/27/95 Co-144 4.06E+00 6.52E+00 2.10E+01 TM 20 27206 12/27/95 Co-57 0.44E+00 0.85E+00 2.74E+00 TM 20 27206 12/27/95 Co-58 -2.61E+00 1.27E+00 4.84E+00 TM 20 27206 12/27/95 Co-60 -1.22E+00 1.45E+00 5.64E+00 TM 20 27206 12/27/95 Cr-51 -2.41E+00 1.09E+01 3.83E+01 TM 20 27206 12/27/95 Cs-134 2.82E+00 2.16E+00 6.22E+00 TM 20 27206 12/27/95 Cs-137 1.52E+00 1.14E+00 3.94E+00 TM 20 27206 12/27/95 Fe-59 1.07E+00 4.93E+00 1.79E+01 TH 20 27206 12/27/95 I-131 -0.15E+00 8.10E-02 0.53E+00 TM 20 27206 12/27/95 K-40 1.32E+03 5.08E+01 5.54E+01

TH 20 27206 12/27/95 Mn-54 0.87E+00 1.10E+00 3.67E+00 TM 20 27206 12/27/95 Ru-103 -2.55E+00 1.26E+00 4.83E+00 TM 20 27206 12/27/95 Ru-106 5.13E+00 1.04E+01 3.72E+01 TM 20 27206 12/27/95 Sb-124 -1.04E+00 2.44E+00 9.81E+00 TM 20 27206 12/27/95 Se-75 -0.92E+00 1.29E+00 4.37E+00 TM 20 27206 12/27/95 Zn-65 -3.76E+00 3.01E+00 1.14E+01 TM 20 27206 12/27/95 Zr-95 1.81E+00 1.96E+00 6.51E+00 l

l 1

I l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pC1/kg) (pci/kg)

TM 21 21091 01/11/95 AcTh228 1.29E+00 5.22E+00 1.86E+01 TM 21 21091 01/11/95 Ag-110M 2.74E+00 1.72E+00 4.91E+00 TM 21 21091 01/11/95 Ba-140 1.72E+00 1.79E+00 5.30E+00 TM 21 21091 01/11/95 Be-7 1.25E+01 1.13E+01 3.39E+01 TM 21 21091 01/11/95 Ce-141 -1.56E+00 2.37E+00 8.45E+00 TM 21 21091 01/11/95 Co-144 9.15E+00 7.32E+00 2.09E+01 TM 21 21091 01/11/95 Co-57 -0.13E+00 0.97E+00 2.86E+00 TM 21 21091 01/11/95 Co-58 2.99E+00 1.32E+00 3.61E+00 TM 21 21091 01/11/95 Co-60 2.68E+00 1.36E+00 3.78E+00 TM 21 21091 01/11/95 Cr-51 8.15E+00 1.21E+01 3.70E+01 TM 21 21091 01/11/95 Cs-134 -1.68E+00 1.38E+00 4.58E+00 TM 21 21091 01/11/95 Cs-137 1.21E+00 1.30E+00 3.88E+00 TM 21 21091 01/11/95 Fe-59 1.11E+00 3.15E+00 9.68E+00 TM 21 21091 01/11/95 I-131 2.03E-02 0.15E+00 0.61E+00 TM 21 21091 01/11/95 K-40 1.29E+03 5.48E+01 8.40E+01

TM 21 21091 01/11/95 Mn-54 -0.29E+00 1.10E+00 3.51E+00 TM 21 21091 01/11/95 Ru-103 -0.38E+00 1.44E+00 4.57E+00 TM 21 21091 01/11/95 Ru-106 -1.38E+01 1.17E+01 3.84E+01 TM 21 21091 01/11/95 Sb-124 -0.53E+00 2.96E+00 9.87E+00 TM 21 21091 01/11/95 Se-75 1.14E+00 1.49E+00 4.27E+00 TM 21 21091 01/11/95 Zn-65 -0.39E+00 2.98E+00 9.41E+00 TM 21 21091 01/11/95 Zr-95 3.28E+00 2.32E+00 6.71E+00 TM 21 21576 02/08/95 AcTh228 -5.37E+00 3.94E+00 1.44E+01 TM 21 21576 02/08/95 Ag-110M 1.38E+00 1.42E+00 4.69E+00 TM 21 21576 02/08/95 Ba-140 -2.48E+00 2.68E+00 1.03E+01 TM 21 21576 02/08/95 Be-7 6.68E+00 8.88E+00 3.03E+01 TM 21 21576 02/08/95 Co-141 -2.37E+00 1.87E+00 6.25E+00 TM 21 21576 02/08/95 Co-144 -2.23E+00 5.95E+00 1.95E+01 TM 21 21576 02/08/95 Co-57 -0.27E+00 0.77E+00 2.53E+00 TM 21 21576 02/08/95 Co-58 -0.47E+00 1.06E+00 3.75E+00 TM 21 21576 02/08/95 Co-60 -0.67E+00 1.16E+00 4.46E+00 TM 21 21576 02/08/95 Cr-51 2.83E+00 1.15E+01 3.96E+01 TM 21 21576 02/08/95 Cs-134 -0.59E+00 0.88E+00 3.22E+00 TM 21 21576 02/08/95 Cs-137 0.25E+00 1.13E+00 4.08E+00 TM 21 21576 02/08/95 Fe-59 0.43E+00 3.81E+00 1.36E+01 TM 21 21576 02/08/95 I-131 -2.85E-02 5.84E-02 0.29E+00 TM 21 21576 02/08/95 K-40 1.34E+03 4.64E+01 5.38E+01

TM 21 21576 02/08/95 Mn-54 0.27E+00 0.96E+00 3.27E+00 TM 21 21576 02/08/95 Ru-103 -0.39E+00 1.28E+00 4.53E+00 TM 21 21576 02/08/95 Ru-106 8.83E+00 9.74E+00 3.42E+01 TM 21 21576 02/08/95 Sb-124 -6.16E+00 2.41E+00 1.08E+01 TM 21 21576 02/08/95 So-75 0.49E+00 1.19E+00 3.87E+00 TM 21 21576 02/08/95 Zn-65 0.26E+00 2.63E+00 9.29E+00 TM 21 21576 02/08/95 Zr-95 0.20E+00 2.31E+00 8.39E+00 TM 21 22012 03/08/95 AcTh228 1.65E+01 6.36E+00 2.04E+01 TM 21 22012 03/08/95 Ag-110M 4.50E+00 2.53E+00 8.48E+00 TM 21 22012 03/08/95 Ba-140 0.74E+00 2.55E+00 9.11E+00 TM 21 22012 03/08/95 Be-7 -9.34E+00 1.09E+01 3.86E+01 TM 21 22012 03/08/95 Ce-141 3.18E+00 3.47E+00 1.14E+01 TM 21 22012 03/08/95 Ce-144 -1.38E+01 1.01E+01 3.52E+01 TM 21 22012 03/08/95 Co-57 0.46E+00 1.38E+00 4.65E+00 TM 21 22012 03/08/95 Co-58 -0.48E+00 1.70E+00 6.09E+00 TM 21 22012 03/08/95 Co-60 -4.16E+00 1.75E+00 7.20E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data.

(January - December 1995) 4 SAMPLE CONC. STD DEV. MDC TYPE STA. L5N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg) h TM 21 22012 03/08/95 Cr-51 -3.56E+01 1.45E+01 5.49E+01 i

TM 21 22012 03/08/95 Cs-134 -3.45E+00 1.49E+00 5.63E+00 TM 21 22012 03/08/95 Cs-137 -0.99E+00 1.57E+00 5.71E+00 4

TM 21 22012 03/08/95 Fe-59 4.73E+00 5.42E+00 1.86E+01 TM 21 22012 03/08/95 I-131 -3.83E-02 7.81E-02 0.42E+00 9

TM 21 22012 03/08/95 K-40 1.29E+03 5.91E+01 8.24E+01

l

TM 21 22012 03/08/95 Mn-54 -0.61E+00 1.49E+00 5.42E+00 i TM 21 22012 03/08/95 Ru-103 -0.68E+00 1.61E+00 5.53E+00 TM . 21 22012 03/08/95 Ru-106 -1.66E+01 1.35E+01 5.00E+01' TM 21 22012 03/08/95 Sb-124 -4.55E+00 3.71E+00 1.49E+01

- TM 21 22012 03/08/95 So-75 1.01E+00- 2.08E+00 7.29E+00 TM 21 22012 03/08/95 En-65 -5.18E+00 3.99E+00 1.46E+01 i

TM 21 22012 03/08/95 Er-95 6.53E+00 2.93E+00 9.32E+00 TM 21 22464 04/05/95 AcTh228 4.95E400 3.45E+00 1.14E+01 TM 21 22464 04/05/95 Ag-110M 0.70E+00 1.22E+00 4.18E+00

! Ba-140 -1.06E+00 1.09E+00 4.21E+00 4 TM 21 22464 04/05/95 2.75E+01 TM 21 22464 04/05/95 Be-7 5.06E+00 7.85E+00 i TM 21 22464 04/05/95 Co-141 -2.32E+00 1.41E+00 4.72E+00 TM 21 22464- 04/05/95 Ce-144 0.72E+00 5.14E+00 1.66E+01

{ Co-57 0.14E+00 0.68E+00 2.19E+00

TM 21' 22464 04/05/95 2.66E+00

TM 21 22464 04/05/95 Co-58 0.12E+00 0.78E+00 TM 21 22464 04/05/95 Co-60 -0.23E+00 0.98E+00 3.61E+00 j

TM 21 22464 04/05/95 Cr-51 2.50E+00 7.87E+00 2.68E+01

TM- 21 22464 04/05/95 Cs-134 -0.12E+00 0.86E+00 3.11E+00 TM 21 22464 04/05/95 Cs-137 2.22E+00 0.83E+00 2.53E+00 i ,

1 TM 21 22464 04/05/95 Fe-59 -2.70E+00 2.95E+00 1.11E+01 TM 21 22464 04/05/95 I-131 3.90E-02 9.71E-02 0.39E+00 TM 21 22464 04/05/95 K-40 1.34E+03 3.88E+01 5.05E+01

i 3.16E+00 i TM 21 22464 04/05/95 Mn-54 -0.76E+00 -0.87E+00 i TM 21 22464 04/05/95 Ru-103 -2.13E+00 1.00E+00 3.78E+00 TM 21 22464 04/05/95 Ru-106 1.32E+01 8.09E+00 2.75E+01

TM 21 22464 04/05/95 Sb-124 0.00E+00 1.56E+00 5.70E+00 j TM 21 22464 04/05/95 Se-75 -1.40E+00 1.12E+00 3.92E+00 i l TM 21 22464 04/05/95 Zn-65 -3.08E+00 2.11E+00 7.80E+00 ;

3.08E+00 1.54E+00 4.81E+00

[ TM 21 22464 04/05/95 Zr-95 5.68E+00 2.09E+01 l TM 21 22790 04/19/95 AcTh228 -1.40E+00 TM 21 22790 04/19/95 Ag-110M 0.54E+00 2.02E+00 7.24E+00 i.. TM 21 22790 04/19/95 Ba-140 -2.93E+00 2.75E+00 1.14E+01 TM 21 22790 04/19/95 Be-7 2.07E+01 1.25E+01 4.10E+01 ,

TM 21 22790 04/19/95 Co-141 0.54E+00 2.34E+00 7.67E+00 i l

TM 21 22790 04/19/95 Co-144 1.02E+00 8.37E+00 2.74E+01 TM 21 22790 04/19/95 Co-57 -6.87E-02 1.09E+00 3.60E+00 TM 21 22790 04/19/95 Co-58 -1.74E+00 1.26E+00 4.95E+00 TM 21 22790 04/19/95 Co-60 1.12E+00 1.49E+00 5.40E+00 1.32E+01 4.26E+01 TM 21 22790 04/19/95 Cr-51 2.57E+01 TM 21 22790 04/19/95 Cs-134 -0.72E+00 1,44E+00 5.44E+00 j TM 21 22790 04/19/95 Ca-137 0.85E+00 1.45E+00 5.23E+00 i TM 21 22790 04/19/95 Fe-59 6.69E+00 5.68E+00 1.97E+01 ]

TM 21 22790 04/19/95 I-131 6.65E-02 7.05E-02 0.27E+00 !

I TM 21 22790 04/19/95 K-40 1.25E+03 6.06E+01 6.93E+01 *

TM 21 22790 04/19/95 Mn-54 0.32Et00 1.32E+00 4.63E+00 TM 21 22790 04/19/95 Ru-103 -1.82E+00 1,47E+00 5.61E+00 TM 21 22790 04/19/95 Ru-106 1.23E+00 1.22E+01 4.88E+01

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

4 i

1 l

- . . . ~ . . - _ . . -. .. _ . - ~ . . - ~

1 I

1

! 4 Seabrook station Radiological Environmental Data l (January - December 1995)

SAMPLE CONC. STD DEV. MDC )

_?!___"I^:_____i'"___""E_E^?'_"?Si!!'______!!S!!!!!____!!!!!!!___!!!!!!!__ !

TM 21 22790 04/19/95 Sb-124 -5.59E+00 2.77E+00 1.34E+01 TM 21 22790 04/19/95 Se-75 0.65E+00 1.64E+00. 5.43E+00 TM 21 22790 04/19/95 En-65 -5.13E+00 3.82E+00 1.48E+01 TM 21 22790 04/19/95 Er-95 -2.24E+00 2.50E+00 9.34E+00 TM 21 23072 05/03/95 AcTh228 -6.17E+00 5.43E+00 2.13E+01 TM 21 23072 05/03/95 Ag-110M 1.76E+00' 2.42E+00 8.41E+00 '

TM 21 23072 05/03/95 Ma-140 -3.77E+00 2.09E+00 9.78E+00 TM 21 23072 05/03/95 Be-7 2.36E+00 1.22E+01 4.34E+01 TM 21 23072 05/03/95 Co-141 -2.22E+00 2.26E+00 7.68E+00 TM 21 23072 05/03/95 Co-144 1.26E+01 8.23E+00 2.59E+01 TM 21 23072 05/03/95 Co-57 0.11E+00 1.10E+00 3.62E+00 TM 21 23072 05/03/95 Co-58 0.91E+00 1.47E+00 5.05E+00 TM 21 23072 05/03/95 Co-60 -0.91E+00 1.78E+00 7.07E+00 TM 21 23072 05/03/95 Cr-51 6.02E+00 1.45E+01 5.01E+01 TM 21 23072 05/03/95 Cs-134 -3.25E+00 1.74E+00 6.90E+00 TM 21 23072 05/03/95 Cs-137 2.31E+00 1.80E+00 6.24E+00 TM 21 23072 05/03/95 Fe-59 6.55E+00 5.66E+00 1.97E+01 y'

TM 21 23072 05/03/95 I-131 -2.26E-02 7.06E-02 0.37E+00

TM 21 23072 05/03/95 K-40 1.36E+03 6.66E+01 7.76E+01 *

.TM 21 23072 05/03/95 Mn-54 1.16E+00 1.31E+00 4.41E+00 TM 21 2J072 05/03/95 Ru-103 -0.88E+00 1.45E+00 5.43E+00 TM 21 23072 05/03/95 Ru-106 -6.20E+00 1.49E+01 5.63E+01 l

TM 21 23072 05/03/95 Sb-124 0.81E+00 2.93E+00 1.14E+01 1 TM 21 23072 05/03/95 Se-75 1.42E+00 1.54E+00 5.02E+00 TM 21 23072 05/03/95 Zn-65 1.26E+00 3.43E+00 1.24E+01 i

, TM 21 23072 05/03/95 Er-95 -2.40E+00 2.68E+00 1.00E+01

)

i TM 21 23387 05/17/95 AcTh228 1.36E+01 6.03E+00 1.88E+01 l TM 21 23387 05/17/95 Ag-110M -0.90E+00 2.23E+00 8.33E+00 TM 21 23387 05/17/95 Ba-140 0.58E+00 2.14E+00 8.30E+00 TM 21 23387 05/17/95 Be-7 3.09E+00 1.40E+01 5.11E+01

, TM 21 23387 05/17/95 Co-141 -0.44E+00 2.70E+00 9.32E+00 TM 21 23387 05/17/95 Co-144 3.97E+00 1.06E+01 3.60E+01 TM 21 23387 05/17/95 Co-57 1.98E+00 1.36E+00 4.50E+00 TM 21 23387 05/17/95 Co-58 2.60E+00 1.73E+00 5.72E+00 TM 21 23387 05/17/95 Co-60 5.03E+00 2.16E+00 6.65E+00

, TM 21 23387 05/17/95 Cr-51 -1.19E+01 1.32E+01 4.85E+01

TM 21 23387 05/17/95 Cs-134 2.56E+00 1.31E+00 4.06E+00 TM 21 23387 05/17/95 Cs-137 2.18E+00 1.59E+00 4.91E+00 TM 21 23387 05/17/95 Fe-59 4.30E+00 4.93E+00 1.67E+01 TM 21 23387 05/17/95 I-131 -4.39E-02 4.80E-02 0.27E+00 ,

TM 21 23387 05/17/95 K-40 1.33E+03 6.55E+01 7.36E+01 * '

TM 21 23387 05/17/95 Mn-54 1.66E+00 1.66E+00 5.66E+00 i 4 TM 21 23387 05/17/95 Ru-103 -2.88E+00 1.72E+00 6.83E+00 l TM 21 23387 05/17/95 Ru-106 3.75E+00 1.27E+01 4.41E+01 ,

l TM 21 23387 05/17/95 Sb-124 -0.56E+00 3.15E+00 1.30E+01 l

TM 21 23387 05/17/95 Se-75 3.04E+00 1.95E+00 6.41E+00 TM 21 23387 05/17/95 En-65 3.81E+00 4.33E+00 1.53E+01 TM 21 23387 05/17/95 Er-95 -1.83E+00 2.95E+00 1.11E+01 TM 21 23646 05/31/95 AcTh228 1.21E+01 5.57E+00 1.75E+01 i TM 21 23646 05/31/95 Ag-110M 1.66E+00 1.92E+00 6.65E+00 ,

TM 21 23646 05/31/95 Ba-140 0.83E+00 2.05E+00 7.50E+00 (

TM 21 23646 05/31/95 Be-7 3.26E+01 1.23E+01 3.92E+01 !

'* Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

4

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

TM 21 23646 05/31/95 Co-141 -5.56E+0d 2.41E+00 8.49E+00 TM 21 23646 05/31/95 Co-144 5.35E+00 9.01E+00 2.92E+01 TM 21 23646 05/31/95 Co-57 0.68D+00 1.12E+00 3.63E+00 TM 21 23646 05/31/95 Co-58 0.78E300 1.30E+00 4.48E+00 TM 21 23646 05/31/95 Co-60 -6.77E-02 1.77E+00 6.75E+00 TM 21 23646 05/31/95 Cr-51 1.04E+01 1.39E+01 4.74E+01 TM 21 23646 05/31/95 Cs-134 0.15E+00 1.51E+00 5.56E+00 TM 21 23646 05/31/95 Cs-137 2.85E+00 1.65E+00 5.20E+00 TM 21 23646 05/31/95 Fe-59 7.65E+00 5.05E+00 1.71E+01 TM 21 23646 05/31/95 I-131 -3.78E-02 2.15E-02 0.15E+00 TM 21 23646 05/31/95 K-40 1.33E+03 6.43E+01 8.60E+01

TM 21 23646 05/31/95 Mn-54 1.37E+00 1.36E+00 4.68E+00 TM 21 23646 05/31/95 Ru-103 -4.29E+00 1.62E+00 6.67E+00 TH 21 23646 05/31/95 Ru-106 1.21E+01 1.16E+01 4.08E+01 TM 21 23646 05/31/95 Sb-124 2.66E+00 2.75E+00 9.56E+00 TH 21 23646 05/31/95 Se-75 2.78E+00 1.79E+00 5.90E+00 TM 21 23646 05/31/95 Zn-65 1.90E+00 3.68E+00 1.30E+01 TM 21 23646 05/31/95 Zr-95 2.34E+00 2.59E+00 8.67E+00 TM 21 23983 06/14/95 AcTh228 -2.17E+00 5.93E+00 2.19E+61 TM 21 23983 06/14/95 Ag-110M 1.44E+00 2.03E+00 7.08E+00 TM 21 23983 06/14/95 Bs-140 -1.25E+00 2.61E+00 1.02E+01 TM 21 23983 06/14/95 de-7 -0.45E+00 1.32E+01 4.89E+01 TM 21 23983 06/14/95 Co-141 -3.09E+00 2.51E+00 8.61E+00 TM 21 23983 06/14/95 Co-144 -4.19E+00 8.53E+00 2.86E+01 TM 21 23983 06/14/95 Co-57 8.06E-02 1.17E+00 3.85E+00 TM 21 23983 06/14/95 Co-58 1.85E+00 1.43E+00 4.66E+00 TM 21 23983 06/14/95 Co-60 -1.63E+00 1.54E+00 6.41E+00 TM 21 23983 06/14/95 Cr-51 6.08E+00 1.44E+01 5.00E+01 TM 21 23983 06/14/95 Cs-134 -2.31E+00 3.09E+00 9.83E+00 TM 21 23983 06/14/95 Cs-137 1.98E+00 1.57E+00 5.11E+00 TM 21 23983 06/14/95 Fe-59 0.64E+00 4.68E+00 1.77E+01 TM 21 23983 06/14/95 I-131 2.83E-02 5.91E-02 0.21E+00 TM 21 23983 06/14/95 K-40 1.32E+03 6.49E+01 9.51E+01

TM 21 23983 06/14/95 Mn-54 -0.17E+00 1.42E+00 5.24E*00 TM 21 23983 06/14/95 Ru-103 -4.61E+00 1.78E+00 7.26E+00 TM 21 23983 06/14/95 Ru-106 1.04E+01 1.18E+01 4.19E+01 TM 21 23983 06/14/95 Sb-124 1.71E+00 3.44E+00 1.25E+01 TM 21 23983 06/14/95 Se-75 -0.28E+00 1.75E+00 6.16E+00 TM 21 23983 06/14/95 Zn-65 0.48E+00 3.67E+00 1.33E+01 TM 21 23983 06/14/95 Zr-95 -1.82E+00 2.40E+00 9.00E+00 TM 21 24221 06/28/95 AcTh228 1.97E+00 6.83E+00 2.47E+01 TM 21 24221 06/28/95 Ag-110M -1.89E+00 2.59E+00 9.99E+00 TM 21 24221 06/28/95 Ba-140 -1.69E+00 2.82E+00 1.18E+01 l TM 21 24221 06/28/95 Be-7 1.24E+01 1.39E+01 4.77E+01 ;

TM 21 24221 06/28/95 Co-141 3.74E+00 2.63E+00 8.34E+00 j TM 21 24221 06/28/95 Co-144 8.50E+00 9.38E+00 3.02E+01 J TM 21 24221 06/28/95 Co-57 0.73E+00 1.25E+00 4.08E+00 TM 21 24221 06/28/95 Co-58 -1.04E+00 1.73E+00 f.49E+00 TM 21 24221 06/28/95 Co-60 1.91E+00 2.33E+00 6.38E+00 TM 21 24221 06/28/95 Cr-51 -2.17E+01 1.64E+01 6.15E+01 TM 21 24221 06/28/95 Cs-134 0.29E+00 1.72E+00 6.39E+00 TM 21 24221 06/28/95 Cs-137 6.67E+00 2.72E+00 9.57E+00 TM 21 24221 06/28/95 Fe-59 3.47E+00 5.62E+00 2.06E+01 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). j l

l

1 l

I Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pCi/kg) (pCi/kg)

TM 21 24221 06/28/95 I-131 -1.57E-02 3.37E-02 0.18E+00 TM 21 24221 06/28/95 K-40 1.27E+03 7.38E+01 9.44E+01

TM 21 24221 06/28/95 Mn-54 1.24E+00 1.66E+00 5.68E+00 TM 21 24221 06/28/95 Ru-103 -2.93E+00 1.73E+00 6.90E+00 TM 21 24221 06/28/95 Ru-106 1.18E+01 1.56E+01 5.61E+01 TM 21 24221 06/28/95 Sb-124 -8.35E+00 4.67E+00 2.10E+01 TM 21 24221 06/28/95 Se-75 0.21E+00 1.83E+00 6.20E+00 TM 21 24221 06/28/95 Zn-65 1.47E+00 4.43E+00 1.60E+01 TM 21 24221 06/28/95 Zr-95 3.80E+00 2.78E+00 9.03E+00 TM 21 24423 07/12/95 AcTh228 4.03E+00 5.36E+00 1.85E+01 TM 21 24423 07/12/95 Ag-110M 1.34E+90 2.02E+00 6.99E+00 TM 21 24423 07/12/95 Ba-140 -5.42E+00 2.74E+00 1.18E+01 TM 21 24423 07/12/95 Be-7 -4.34E+00 1.12E+01 4.03E+01 TM 21 24423 07/12/95 Co-141 -0.75E+00 2.11E+00 6.99E+00 TM 21 24423 07/12/95 Co-144 3.34E+00 7.78E+00 2.52E+01 TM 21 24423 07/12/95 Co-57 0.37E+00 0.95E+00 3.07E+00 TM 21 24423 07/12/95 Co-58 -1.43E+00 1.35E+00 5.03E+00 TM 21 24423 07/12/95 Co-60 0.61E+00 1.61E+00 5.90E+00 1 TM 21 24423 07/12/95 Cr-51 1.98E+00 1.36E+01 4.73E+01 TM 21 24423 07/12/95 Cs-134 0.55E+00 1.30E+00 4.68E+00 TM 21 24423 07/12/95 Cs-137 1.04E+01 2.02E+00 6.16E+00

l TM 21 24423 07/12/95 Fe-59 2.60E+00- 5.32E+00 1.92E+01 TM 21 24423 07/12/95 I-131 -7.32E-02 8.60E-02 0.48E+00 TM 21 24423 07/12/95 K-40 1.40E+03 5.84E+01 6.81E+01

TM 21 24423 07/12/95 Mn-54 0.75E+00 1.27E+00 4.31E+00 TM 21 24423 07/12/95 Ru-103 -1.59E+00 1.46E+00 5.44E+00 TM 21 24423 07/12/95 Ru-106 -1.83E+01 1.26E+01 4.93E+01 TM 21 24423 07/12/95 Sb-124 1.27E+00 2.98E+00 1.11E+01 TM 21 24423 07/12/95 Se-75 0.68E+00 1.49E+00 4.88E+00 TM 21 24423 07/12/95 Zn-65 7.71E+00 3.53E+00 1.12E+01 TM 21 24423 07/12/95 Zr-95 -0.21E+00 2.17E+00 7.74E+00 TM 21 24696 07/26/95 AcTh228 -6.82E+C'O 6.54E+00 2.53E+01 TM 21 24696 07/26/95 Ag-110M -2.64E+CG 2.55E+00 9.83E+00 TM 21 24696 07/26/95 Ba-140 -4.19E+00 2.33E+00 1.09E+01 TM 21 24696 07/26/95 Be-7 1.09E+01 1.08E+01 3.70E+01 TM 21 24696 07/26/95 Ce-141 2.46E+00 2.41E+00 7.74E+00 TM 21 24696 07/26/95 Ce-144 -0.19E+00 9.23E+00 3.05E+01 TM 21 24696 07/26/95 Co-57 -0.79E+00 1.13E+00 3.82E+00 TM 21 24696 07/26/95 Co-58 1.84E+00 1.79E+00 5.94E+00 TM 21 24696 07/26/95 Co-60 -0.69E+00 2.03E+00 7.93E+00 TM 21 24696 07/26/95 Cr-51 -1.89E+01 1.50E+01 5.58E+01 TM 21 24696 07/26/95 Cs-134 3.14E+00 1.54E+00 5.08E+00 TM 21 24696 07/26/95 Cs-137 0.86E+00 1.79E+00 6.52E+00 TM 21 24696 07/26/95 Fe-59 -1.37E+00 6.26E+00 2.39E+01 TM 21 24696 07/26/95 I-131 2.51E-02 5.62E-02 0.22E+00 TM 21 24696 07/26/95 K-40 1.46E+03 7.37E+01 9.25E+01

TM 21 24696 07/26/95 Mn-54 -1.93E+00 1.61E+00 6.26E+00 TM 21 24696 07/26/95 Ru-103 -0.98E+00 1.53E+00 5.77E+00 TM 21 24696 07/26/95 Ru-106 -2.03E+01 1.31E+01 5.412+01 TM 21 24696 07/26/95 Sb-124 -2.73E+00 3.96E+00 1.65E+01 TM 21 24696 07/26/95 Se-75 -2.54E+00 1.78E+00 6.35"~10 TM 21 24696 07/26/95 Zn-65 8.11E+00 4.26E+00 1. 3 6.$+0i TM 21 24696 07/26/95 Zr-95 4.12E+00 2.68E+00 8.56E+00

Radioactivity detected (i.e., Concentration is > 3 d Deviations).

- ~ . . - . - . - ~ _ . . . ~ - . - - . - - - . - .-- -

e 4

j Seabrook Station Radiological Environmental Data (January - December 1995) 4 SAMPLE CONC. STD DEV. MDC TYPE. STA. LSN END DATE NUCLIDE (pC1/kg) (pci/kg) (pC1/kg)

~~~~~-------------------------------------------~~~~~-~~-~~~---~~------

i j TM 21 24869 08/09/95 AcTh228 -1.75E+00 7.10E+00 2.61E+01 TM 21 24869 08/09/95 Ag-110M -1.34E+00 2.18E+00 8.40E+00 4

TM 21 24869 08/09/95 Ba-140 -2.53E+00 3.01E+00 1.25E+01 TM- 21 24869 08/09/95 Be-7 -2.23E+01 1.17E+01 4.74E+01 TM 21 24869 08/09/95 Co-141 -0.14E+00 2.47E+00 8.23E+00 21 24869 08/09/95 Co-144 3.92E+00 8.42E+00 2.76E+01

[ j TM TM 21 24869 08/09/95 Co-57 -1.20E+00 1.13E+00 3.86E+00 j TM 21 24869 08/09/95 Co-58 1.17E+00 1.58E+00 5.39E+00 TM 21 24869 08/09/95 Co-60 3.46E+00 1.90E+00 6.22E+00 TM 21 24869 08/09/95 Cr-51 -1.97E+01 1.39E+01 5.27E+01

> TM 21 24869 08/09/95 Cs-134 0.33E+00 1.27E+00 4.73E+00 TM 21 24869 08/09/95 Cs-137 2.78E+0-) 1.52E+00 5.04E+00 2

TM 21 24869 08/09/95 Fe-59 -5.10E+00 6.08E+00 2.42E+01

TM 21 24869 08/09/95 I-131 -4. 76E 'J2 4.37E-02 0.27E+00 TM 21 24869 08/09/95 K-40 1.42E+03 7.38E+01 9.88E+01

TM 21 24869 08/09/95 Mn-54 -0.92E+00 1.37E+00 5.23E+00 3

TM 21 24869 08/09/95 Ru-103 3.85E+00 1.53E+00 4.66E+00 i TM 21 24869 08/09/95 Ru-106 -7.39E+00 1.39E+01 5.41E+01 e TM 21 24869 08/09/95 Sb-124 1.87E+00 3.73E+00 1.40E+01 l

TM 21 24869 08/09/95 Se-75 1.07E+00 1.72E+00 5.66E+00 t TM 21 24869 08/09/95 Zn-65 -0.58E+00 3.02E+00 1.17E+01 TM 21 24869 08/09/95 Zr-95 -0.48E+00 2.57E+00 9.44E+00 i TM 21 25113 08/23/95 AcTh228 0.26E+00 3.43E+00 1.20E+01 1 TM 21 25113 08/23/95 Ag-110M -0.68E+00 1.30E+00 4.64E+00 )

, TM 21 25113 08/23/95 Ba-140 -1.38E+00 1.61E+00 6.09E+00

, TM 21 25113 08/23/95 Be-7 2.65E+00 8.03E+00 2.85E+01 1 TM 21 25113 08/23/95 Co-141 -3.32E+00 1.60E+00 5.38E+00

i. TM 21 25113 08/23/95 Co-144 0.96E+00 5.23E+00 1.69E+01 TM 21 25113 08/23/95 Co-57 -0.48E+00 0.68E+00 2.24E+00 -

TM 21 25113 08/23/95 Co-58 0.41E+00 0.92E+00 3.07E+00 1 2 TM 21 25113 08/23/95 Co-60 -8.55E-02 1.03E+00 3.77E+00 l l TM 21 25113 08/23/95 Cr-51 -9.17E+00 9.58E+00 3.36E+01 l TM 21 25113 08/23/95 Cs-134 -1.63E+00 1.68E+00 5.24E+00 j 3.22E+00

TM 21 25113 08/23/95 Cs-137 1.79E+00 0.99E+00 l l- TM 21 25113 08/23/95 Fe-59 0.45E+00 3.33E+00 1.20E+01

TM 21 25113 08/23/95 I-131 6.00E-02 6.90E-02 0.24E+00

) TM 21 25113 08/23/95 K-40 1.40E+03 3.94E+01 4.84E+01 *

TM 21 25113 08/23/95 Mn-54 -6.25E-02 0.87E+00 3.06E+00 TM 21 25113 08/23/95 Ru-103 -0.61E+00 1.09E+00 3.95E+00 TM 21 25113 08/23/95 Ru-106 7.14E+00 7.96E+00 2.78E+01

, TM 21 25113 08/23/95 Sb-124 1.03E+00 1.98E+00 6.86E+00

! TM 21 25113 08/23/95 Se-75 -0.10E+00 1.14E+00 3.91E+00

, TM 21 25113 08/23/95 Zn-65 -5.05E+00 2.18E+00 8.28E+00 TM 21 25113 08/23/95 Zr-95 1.73E+00 1.53E+00 4.97E+00 TM 21 25299 09/06/95 AcTh228 -7.01E+00 4.87E+00 1.80E+01 TM 21 25299 09/06/95 Ag-110M -1.06E+00 1.57E+00 5.72E+00 TM 21 25299 09/06/95 Ba-140 0.79E+00 1.71E+00 6.18E+00 i

TM 21 25299 09/06/95 Be-7 1.79E+00 9.49E+00 3.34E+01

TM' 21 25299 09/06/95 Co-141 0.99E+00 1.88E+00 6.08E+00

TM 21 25299 09/06/95 Ce-144 9.26E+00 6.88E+00 2.18E+01 TM. 21 25299 09/06/95 Co-57 -0.12E+00 0.87E+00 2.84E+00 TM 21 25299 09/06/95 Co-58 -0.14E+00 1 1.13E+00 4.01E+00 TM 21 25299 09/06/95 Co-60 2.05E+00 '1 37E+00

. 4.54E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

! I l

l

l Seabrook Station Radiological Environmental Data-(January - December 1995).

SAMPLE CONC. STD DEV. MDC I TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

TM 21 25299 09/06/95 Cr-51 6.24E+00 1.09E+01 3.71E+01 TM 21 25299 09/06/95 Cs-134 0.11E+00 1.09E+00 3.87E+00 TM 21 25299 09/06/95 Cs-137 2.78E+00 1.27E+00 4.16E+00 4.00E+00 1.45E+01

. TM 21 25299 09/06/95 Fe-59 0.00E+00 TM 21 25299 09/06/95 I-131 0.13E+00 0.10E+00 0.30E+00

TM 21 25299 09/06/95 K-40 1.30E+03 5.17E+01 4.78E+01

TM 21 25299 09/06/95 Mn-54 1.28E+00 1.21E+00 3.98E+00 TM 21 25299 09/06/95 Ru-103 -1.25E+00 1.25E+00 4.62E+00 TM 21 25299 09/06/95 Ru-106 3.52E+00 9.96E+00 3.62E+01 TM 21 25299 09/06/95 Sb-124 1.67E+00 2.51E+00 8.91E+00 TM 21 25299 09/06/95 Se-75 -0.14E+00 1.32E+00 4.40E+00 TM 21 25299 09/06/95 En-65 -0.33E+00 3.08E+00 1.11E+01 j TM 21 25299 09/06/95 Er-95 -0.40E+00 2.22E+00 8.31E+00 i

TM 21 25548 09/20/95 AcTh228 3.83E+00 6.91E+00 2.44E+01

, TM 21 25548 09/20/95 Ag-110M -4.10E+00 2.30E+00 9.57E+00 j TM 21 25548 09/20/95 Ba-140 2.02E+00 2.61E+00 9.49E+00 TM 21 25548 09/20/95 Be-7 -8.61E+00 1.47E+01 5.47E+01 TM 21 25548 09/20/95 Co-141 0.86E+00 2.54E+00 8.34E+00

TM 21 25548 09/20/95 Co-144 -9.32E+00 9.38E+00 3.21E+01 TM 21 25548 09/20/95 Co-57 0.19E+00 1.21E+00 4.01E+00 TM 21 25548 09/20/95 Co-58 -0.12E+00 1.70E+00 6.15E+00 TM 21 25548 09/20/95 Co-60 0.14E+00 2.04E+00 7.85E+00 TM 21 25548 09/20/95 Cr-51 2.41E+01 1.58E+C1 5.21E+01 4 TM 21 25548 09/20/95 Co-134 0.28E+00 2.83E+00 8.80E+00 i TM 21 25548 09/20/95 Cs-137 1.84E+00 1.83E+00 6.48E+00 TM 21 25548 09/20/95 Fe-59 1.01E+01 6.02E+00 2.00E+01 TM 21 25548 09/20/95 I-131 0.10E+00 7.93E-02 0.23E+00

TM 21 25548 09/20/95 K-40 1.39E+03 7.50E+01 8.70E+01

TM 21 25548 09/20/95 Mn-54 0.00E+00 1.30E+00 4.81E+00 i TM 21 25548 09/20/95 Ru-103 -3.72E+00 1.74E+00 7.03E+00 TM 21 25548 09/20/95 Ru-106 1.82E+01 1.49E+01 5.20E+01 TM 21 25548 09/20/95 Sb-124 -2.03E+00 4.76E+00 1.91E+01

TM 21 25548 09/20/95 Se-75 -0.15E+00 1.76E+00 6.03E+00 TM 21 25548 09/20/95 Zn-65 -1.27E+00 4.12E+00 1.56E+01

, TM 21 25548 09/20/95 Er-95 -4.79E+00 2.82E+00 1.14E+01 TM 21 25761 10/04/95 AcTh228 -7.67E+00 6.91E+00 2.70E+01

. TM 21 25761 10/04/95 Ag-110M -2.57E+00 2.46E+00 9.71E+00 1 TM 21 25761 10/04/95 Ba-140 -0.66E+00 3.32E+00 1.30E+01 J TM 21 25761 10/04/95 Be-7 -5.15E+00 1.43E+01 5.26E+01 J TM 21 25761 10/04/95 Co-141 -4.49E+00 2.54E+00 8.93E+00 TM 21 25761 10/04/95 Co-144 9.11E+00 9.79E+00 3.15E+01 TM 21 25761 10/04/95 Co-57 1.10E+00 1.30E+00 4.19E+00 TM 21 25761 10/04/95 Co-58 -0.20E+00 1.44E+00 5.36E+00 TM 21 25761 10/04/95 Co-60 0.14E+00 2.04E+00 7.85E+00 TM 21 25761 10/04/95 Cr-51 -1.50E+00 1.65E+01 5.84E+01 TM 21 25761 10/04/95 Cs-134 3.08E+00 2.29E+00 6.39E+00 TM 21 25761 10/04/95 Cs-137 7.93E+00 2.40E+00 7.86E+00

TM 21 25761 10/04/95 Fe-59 1.39E+01 6.30E+00 2.00E+01 TM 21 25761 10/04/95 I-131 -2.92E-02 3.19E-02 0.19E+00 TM 21 25761 10/04/95 K-40 1.39E+03 7.55E+01 9.08E+01

TM 21 25761 10/04/95 Mn-54 -4.08E+00 1.49E+00 6.42E+00 TM 21 25761 10/04/95 Ru-103 1.74E+00 1.80E+00 6.14E+00 TM 21 25761 10/04/95 Ru-106 5.27E+00 1.53E+01 5.67E+01

Radioactivity detected-(i.e., Concentration is > 3 Std. Deviations).

4

- ,m_, ., , ,.

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pCi/kg) (pci/kg)

TM 21 25761 10/04/95 Sb-124 1.87E+00 3.80E+00 1.44E+01

TM 21 25761 10/04/95 So-75 2.62E+00 1.88E+00 5.98E+00

! TM .21 25761 10/04/95 En-65 0.00E+00 4.58E+00 1.68E+01

! 1mt 21 25761 10/04/95 Er-95 4.38E+00 2.93E+00 9.39E+00 HTM 21 26359 11/01/95 AcTh228 -6.59E+00 4.49E+00 1.69E+01 TM 21 26359 11/01/95 Ag-110M -1.46E+00 1.73E+00 6.29E+00 i TM 21 26359 11/01/95 .Ba-140 -1.00E+00 2.09E+00. 8.14E+00

TM 21 26359 11/01/95 Be-7 1.12E+01 1.04E+01 3.49E+01 TM 21 26359 11/01/95 Co-141 0.40E+00 2.06E+00 6.70E+00 TM 21 26359 11/01/95 Co-144 3.17E+00 6.84E+00 2.21E+01

~

TM 21 26359 11/01/95 Co-57 0.11E+00 0.90E+00 2.94E+00 TM 21 26359 11/01/95 Co-58 -6.62E-02 1.18E+00 4.15E+00 4 TM 21 26359 11/01/95 Co-60 0.14E+00 1.40E+00 5.10E+00

TM 21 26359 11/01/95 Cr-51 -1.67E+00 1.24E+01 4.33E+01 1 TM 21 26359 11/01/95 Co-134 0.34E+00 1.09E+00 3.84E+00 i

! TM 21 26359 11/01/95 Cs-137 1.84E+00 1.49E+00 5.15E+00 '

TM 21 26359 11/01/95 Fe-59 5.47E+00 4.24E+00 1.42E+01 TM 21 26359 11/01/95 I-131 -6.19E-02 8.11E-02 0.49E+00 TM 21 26359 11/01/95 K-40 1.40E+03 5.45E+01 6.16E+01

i TM 21 26359 11/01/95 Mn-54 -0.15E+00 1.19E+00 4.17E+00 i TM 21 26359 11/01/95 Ru-103 -2.88E+00 1.35E+00 5.15E+00

TM 21 26359 11/01/95 Ru-106 -1.24E+00 1.10E+01 4.06E+01 TM 21 26359 11/01/95 Sh-124 -2.28E+00 2.96E+00 1.16E+01 i

TM 21 26359 11/01/95 Se-75 2.41E+00 1.25E+00 3.87E+00 g TM 21 26359 11/01/95 Zn-65 -3.49E+00 3.17E+00 1.19E+01 TM 21 26359 11/01/95 Zr-95 -3.45E+00 2.36E+00 9.34E+00 i

TM 21 26784 11/30/95 AcTh228 -3.71E+00 6.85E+00 2.60E+01 i

, TM 21 26784 11/30/95 Ag-110M -0.22E+00 2.18E+00 8.24E+00 1 TM 21 26784 11/30/95 Ba-140 -1.28E+00 3.00E+00 1.20E+01

TM 21 26784 11/30/95 Be-7 0.16E+00 1.44E+01 5.19E+01

] TM 21 26784 11/30/95 Co-141 5.89E-02 2.42E+00 8.05E+00 j TM 21 26784 11/30/95 Co-144 1.40E+01 9.60E+00 3.04E+01 l TM 21 26784 11/30/95 Co-57 -1.03E+00 1.28E+00 4.32E+00 TM 21 26784 11/30/95 Co-58 1.90E+00 1.59E+00 5.26E+00

]- TM 21 26784 11/30/95 Co-60 -1.33E+00 2.07E+00 8.40E+00 j TM 21 26784 11/30/95 Cr-51 3.04E+00 1.45E+01 '5.13E+01 4 TM 21 26784 11/30/95 Co-134 -0.13E+00 3.03E+00 9.43E+00

' TM 21 26784 11/30/95 Cs-137 -1.30E+00 1.89E+00 7.40E+00

- TM 21 26784 11/30/95 Fe-59 5.49E+00 5.20E+00 1.84E+01

TM 21 26784 11/30/95 I-131 -2.31E-02 3.88E-02 0.20E+00

, TM 21 26784 11/30/95 K-40 1.43E+03 7.66E+01 8.90E+01 *

! TM 21 26784 11/30/95 Mn-54 1.75E+00 1.71E+00 5.68E+00 TM 21 26784 11/30/95 Ru-103 -2.56E+00 1.84E+00 7.12E+00 TM 21 26784 11/30/95 Ru-106 9.88E+00 1.49E+01 5.39E+01 TM 21 26784 11/30/95 Sb-124 6.03E+00 3.79E+00 1.22E+01

TM 21 26784 11/30/95 Se-75 -3.59E+00 1.81E+00 6.68E+00

~

TM 21 26784 11/30/95 En-65 -9.62E+00 4.76E+00 1.94E+01 TM 21 26784 11/30/95 Er-95 -1.39E+00 3.25E+00 1.19E+01 i TM 21 27207 12/27/95 AcTh228 -4.14E+00 4.71E+00 1.74E+01 TM 21 27207 12/27/95 Ag-110M 0.54E+00 1.98E+00 6.93E+00 l

. . TM 21 27207 12/27/95 Ba-140 -0.95E+00 2.47E+00 9.51E+00 TM 21 27207 12/27/95 Be-7 -1.15E+01 1.13E+01 4.11E+01 I

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i v -

- . - .. ____ _ . .~ . .- ,_- - _. .- - - - . . . . . - ,__ _ _ _

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

TM 21 27207 12/27/95 Co-141 .-2.33E+00 2.13E+00 7.10E+00 TM 21 27207 12/27/95 Co-144 1.44E+00 7.13E+00 2.31E+01 TM 21 27207 12/27/95 Co-57 1.02E+00 0.91E+00 2.90E+00 TM 21 27207 12/27/95 Co-58 -0.74E+00 1.39E+00 4.91E+00 TM '21 27207 12/27/95 Co-60 2.73E+00 1.57E+00 5.23E+00 TM 21. 27207 12/27/95 Cr-51 8.16E+00 1.33E+01 4.52E+01 TM 21 27207 12/27/95 Cs-134 0.83E+00 3.55E+00 1.29E+01 4 TM 21 27207 12/27/95 Co-137 -0.21E+00 1.25E+00 4.61E+00

TM 21 27207 12/27/95 Fe-59 -5.48E+00 4.58E+00 1.78E+01 TM- 21 27207 12/27/95 I-131 3.58E-02 9.18E-02 0.36E+00 i

TM 21 27207 12/27/95 K-40 1.37E+03 5.25E+01 6.81E+01

TM- 21 27207 12/27/95 Mn-54 -1.66E+00 1.04E+00 3.94E+00 TM 21 27207 12/27/95 Ru-103 -2.26E+00 1.39E+00 5.18E+00 TM 21 27207 12/27/95 Ru-106 -1.18E+01 1.09E+01 4.17E+01 TM 21 27207 12/27/95 Sb-124 0.55E+00 2.96E+00 1.10E+01 l

TM 21 27207 12/27/95 So-75 -1.34E+00 1.33E+00 4.54E+00

TM 21 27207 12/27/95 Zn-65 6.60E+00 6.61E+00 2.44E+01 TM 21 27207 12/27/95 Zr-95 -0.76E+00 2.32E+00 8.12E+00 j

M l

l

+

4 i

i i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4

! I l

I Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pCi/kg) (pci/kg)

Ground Water WG 01 22150 03/16/95 AcTh228 0.44E+00 5.52E+00 1.93E+01 WG 01 22150 03/16/95 Ag-110M -0.84E+00 2.07E+00 7.37E+00 WC 01 22150 03/16/95 Ba-140 2.31E+00 2.70E+00 9.15E+00 WG 01 22150 03/16/95 Be-7 2.39E+00 1.40E+01 4.79E+01 WG 01 22150 03/16/95 Co-141 -3.09E+00 3.08E+00 1.05E+01 WG 01 22150 03/16/95 Co-144 . -2.07E+01 1.10E+01 3.80E+01 WG 01 22150 03/16/95 Co-57 2.98E+00 1.43E+00 4.69E+00 WG 01 22150 03/16/95 Co-58 0.77E+00 1.48E+00 5.01E+00 WG 01 22150 03/16/95 Co-60 1.40E+00 1.56E+00 5.40E+00 WG 01 22150 03/16/95 Cr-51 3.68E+00 1.59E+01 5.29E+01 WG 01 22150 03/16/95 Cs-134 7.06E+00 2.99E+00 1.08E+01 WG 01 22150 03/16/95 Cs-137 -2.05E+00 1.71E+00 6.26E+00 WG 01 22150 03/16/95 Fe-59 6.98E+00 4.82E+00 1.62E+01 WG 01 22150 03/16/95 I-131 -3.95E+00 4.05E+00 1.41E+01 WG 01 22150 03/16/95 K-40 1.67E+00 1.57E+01 5.49E+01 WG 01 22150 03/16/95 Mn-54 -1.59E+00 1.51E+00 5.37E+00 WG 01 22150 03/16/95 Ru-103 0.61E+00 1.85E+00 6.29E+00 WG 01 22150 03/16/95 Ru-106 1.46E+01 1.35E+01 4.61E+01 WG 01 22150 03/16/95 Sb-124 -2.19E&OO 3.74E+00 1.40E+01 WG 01 22150 03/16/95 Se-75 -5.35E+00 2.10E+00 7.29E+00 WG 01 22150 03/16/95 Zn-65 -2.62E+00 4.75E+00 1.71E+01 WG 01 22150 03/16/95 Zr-95 -4.22E+00 2.70E+00 9.83E+00 WG 01 23996 06/20/95 AcTh228 0.71E+00 5.16E+00 1.87E+01 WG 01 23996 06/20/95 Ag-110M -1.37E+00 1.46E+00 5.92E+00 WG 01 23996 06/20/95 Ba-140 -2.19E+00 2.19E+00 9.07E+00

, WG 01 23996 06/20/95 Be-7 3.71E+00 9.66E+00 3.43E+01 WG 01 23996 06/20/95 Co-141 -2.01E+00 2.05E+00 6.98E+00 WG 01 23996 06/20/95 Co-144 -4.65E+00 7.59E+00 2.55E+01 (

WG 01 23996 06/20/95 Co-57 0.13E+00 0.95E+00 3.14E+00 i WG 01 23996 06/20/95 Co-58 0.68E+00 1.17E+00 4.06E+00 l WG 01 23996 06/20/95 Co-60 1.685+00 1.22E+00 4.17E+00 WG 01 23996 06/20/95 Cr-51 0.00E+00 1.10E+01 3.91E+01 WG 01 23996 06/20/95 Cs-134 -0.77E+00 1.26E+00 4.85E+00 WG 01 23996 06/20/95 Cs-137 0.83E+00 1.49E+00 5.40E+00 I 1.32E+01 4

WG 01 23996 06/20/95 Fe-59 3.94E+00 3.73E+00 WG 01 23996 06/20/95 I-131 1.15E+00 2.27E+00 7.91E+00 )

WG 01 23996 06/20/95 K-40 2.72E+01 1.50E+01 4.69E+01 :

WG 01 23996 06/20/95 Mn-54 -1.88E+00 0.98E+00 4.14E+00 )

WG 01 23996 06/20/95 Ru-103 -1.31E+00 1.34E+00 5.07E+00 -

WG 01 23996 06/20/95 Ru-106 7.70E+00 1.03E+01 3.74E+01 WG 01 23996 06/20/95 Sb-124 -5.10E+00 3.64E+00 1.55E+01 WG 01 23996 06/20/95 Se-75 2.71E+00 1.53E+00 4.76E+00 1 WG 01 23996 06/20/95 Zn-65 -3.74E+00 2.95E+00 1.19E+01 WG 01 23996 06/20/95 Zr-95 -1.04E+00 1.96E+00 7.40E+00 )

WG 01 25471 09/14/95 AcTh228 -1.94E+00 5.32E+00 2.07E+01 WG 01 25471 09/14/95 Ag-110M -1.11E+00 2.26E+00 8.73E+00 1

WG 01 25471 09/14/95 Ba-140 2.06E+00 2.60E+00 9.39E+00 WG 01 25471 09/14/95 Be-7 1.89E+01 1.36E+01 4.54E+01 WG 01 25471 09/14/95 Co-141 5.38E+00 2.65E+00 8.22E+00 WG 01 25471 09/14/95 Co-144 2.79E+00 8.87E+00 2.93E+01 WG 01 25471 09/14/95 Co-57 0.12E+00 1.16E+00 3.83E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l

-. _._ _. . _ . . . _ . _ . . __ . . _ _ . _ . . _ . _ _ . _ . _ _ _ _ ~ _ _ . _ _ . _ _ . ~ .

I !

l Seabrook Station Radiological Environmental Data (January - December 1995) ;

SAMPLE CONC. STD DEV. MDC l TYPE STA.- L8N END DATE NUCLIDE (pCi/kg) (pC1/kg) (pci/kg) i..

I WG 01 25471 09/14/95 Co-58 -0.54E+00 1.38E+00 5.27E+00 WG 01 25471 09/14/95 Co-60 0.12E+00 1.51E+00 6.055+00 WG 01 25471 09/14/95 Cr-51 -2.95E+00 1.45E+01 5.20E+01 NG 01 25471 09/14/95 Cs-134 1.50E+00 4.12E+00 1.50E+01 WG 01 25471 09/14/95 Cs-137 2.03E+00 1.41E+00 4.84E+00 ,

WG 01 25471 09/14/95 Fe-59 -1.07E+00 4.31E+00 1.76E+01 i WG 01 25471 09/14/95 I-131 2.29E+00 2.95E+00 1.02E+01 WG 01 25471 09/14/95 K-40 4.71E+01 1.98E+01 5.73E+01

. WG 01 -25471 09/14/95 Mn-54 0.70E+00 1.48E+00 5.18E+00 WG 01 25471 09/14/95- Ru-103 -2.17E+00 1.53E+00 6.11E+00

' WG 01 25471 09/14/95 Ru-106 1.88E+00 1.33E+01 5.04E+01 i i WG 01 25471 09/14/95 Sb-124 -6.24E+00 4.32E+00 1.92E+01 WG 01 25471 09/14/95 Se-75 1.61E+00 1.78E+00 5.81E+00 WG 01 25471 09/14/95 En-65 4.47E+00 7.07E+00 2.69E+01 l'

WG 01 25471 09/14/95 Er-95 1.57E+00 2.14E+00 7.47E+00 WG 01 26963 12/12/95 AcTh228 -1.58E+00 3.57E+00 1.31E+01

! WG 01 26963 12/12/95 Ag-110M 1.075+00 1.20E+00 4.12E+00

WG 01 26963 12/12/95 Ba-140 1.09E+00 2.09E+00 7.52E+00 WG 01 26963 12/12/95 Be-7 2.27E+00 8.59E+00 3.00E+01 l

WG 01 26963 12/12/95 Co-141 1.41E+00 1.78E+00 5.73E+00 i WG 01 26963 12/12/95 Co-144 4.55E+00 5.60E+00 1.80E+01 )

WG 01 26963 12/12/95 Co-57 -0.32E+00 0.71E+00 2.34E+00 l WG 01 26963 12/12/95 Co-58 -1.38E+00 0.86E+00 3.34E+00 l WG' 01 26963 12/12/95 Co-60 0.90E+00 1.00E+00 3.54E+00 WG 01 26963 12/12/95 Cr-51 5.63E+00 1.02E+01 3.48E+01 WG 01 26963 12/12/95. Cs-134 1.56E+00 0.95E+00 3.24E+00 WG 01 26963 12/12/95 Cs-137 0.33E+00 0.93E+00 3.39E+00 WG 01 26963 12/12/95 Fe-59 0.59E+00 3.07E+00 1.14E+01 l WG 01 26963 12/12/95 I-131 2.67E+00- 3.27E+00 1.11E+01 -

I WG 01 26963 12/12/95 K-40 -9.02E+00 1.24E+01 4.72E+01 WG 01 26963 12/12/95 Mn-54 -0.63E+00 0.81E+00 2.99E+00 i

WG 01 26963 12/12/95 Ru-103 -1.87E+00 1.02E+00 3.90E+00 J WG 01 26963 12/12/95 Ru-106 -1.19E+01 7.47E+00 3.00E+01 '

i 3

WG 01 26963 12/12/95 Sb-124 0.88E+00 2.42E+00 8.87E+00 2

WG 01 26963 12/12/95 Se-75 1.67E+00 1.08E+00 3.40E+00 WG 01 26963 12/12/95 En-65 1.08E+00 3.75E+00 1.49E+01 1

WG 01 26963 12/12/95 Er-95 -0.59E+00 1.56E+00 5.62E+00 '

l 1 ;

i i

I t

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Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i r -.

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCL/kg) (pci/kg) (pci/kg)

WG 13 22151 03/16/95 AcTh228 5.38E+00 4.26E+00 1.46E+01 WG 13 22151 03/16/95 Ag-110M -0.51E+00 1.51E+00 5.60E+00 WG 13 22151 03/16/95 Ba-140 -1.48E+00 2.41E+00 8.89E+00 WG 13 22151 03/16/95 Be-7 8.62E+00 9.07E+00 2.96E+01 WG 13 22151 03/16/95 Co-141 -7.07E-02 2.03E+00 6.87E+00

WG 13 22151 03/16/95 Co-144 -9.91E+00 7.72E+00 2.66E+01 WG 13 22151 03/16/95 Co-57 0.66E+00 1.02E+00 3.41E+00 WG 13 22151 03/16/95 Co-58 -0.55E+00 1.174,00 4.22E+00 WG 13 22151 03/16/95 Co-60 -1.04E+00 1.17E+00 4.49E+00 WJ 13 22151 03/16/95 Cr-51 -0.77E+00 1.15E+01 4.08E+01 WG 13 22151 03/16/95 Cs-134 -3.28E+00 1.44E+00 5.49E+00 WG 13 22151 03/16/95 Cs-137 0.77E+00 1.10E+00 3.78E+00 WG 13 22151 03/16/95 Fe-59 -0.83E+00 3.80E+00 1.38E+01 WG 13 22151 03/16/95 I-131 2.92E+00 2.69E+00 9.31E+00 WG 13 22151 03/16/95 K-40 -4.61E+00 1.39E+01 5.16E+01 WG 13 22151 03/16/95 Mn-54 -0.62E+00 1.04E+00 3.79E+00 WG 13 22151 03/16/95 Ru-103 -1.46E+00 1.17E+00 4.11E+00 WG 13 22151 03/16/95 Ru-106 3.22E+00 1.03E+01 3.55E+01 WG 13 22151 03/16/95 Sb-124 4.62E+00 3.45E+00 1.13E+01 WG 13 22151 03/16/95 So-75 -1.46E+00 1.52E+00 5.46E+00 WO 13 22151 03/16/95 Zn-65 -1.47E+00 2.52E+00 9.03E+00 WG 13 22151 03/16/95 Zr-95 -0.42E+00 2.05E+00 7.33E+00 WG 13 23997 06/20/95 AcTh228 0.70E+00 5.47E+00 1.97E+01 WG 13 23997 06/20/95 Ag-110M 2.09E+00 1.51E+00 5.04E+00 WG 13 23997 06/20/95 Ba-140 -1.73E+00 2.02E+00 8.41E+00 WG 13 23997 06/20/95 Be-7 -6.10E+00 1.04E+01 3.87E+01 WO 13 23997 06/20/95 Co-141 4.81E+00 1.91E+00 5.83E+00 WG 13 23997 06/20/95 Co-144 2.77E+00 7.08E+00 2.32E+01 WG 13 23997 06/20/95 Co-57 0.17E+00 0.94E+00 3.10E+00 WG 13 23997 06/20/95 Co-58 -3.26E+00 1.14E+00 4.94E+00 WG 13 23997 06/20/95 Co-60 0.52E+00 1.16E+00 4.44E+00 WG 13 23997 06/20/95 Cr-51 -4.14E+00 1.03E+01 3.75E+01 WO 13 23997 06/20/95 Cs-134 -0.51E+00 1.79E+00 5.78E+00 I WG 13 23997 06/20/95 Cs-137 0.95E+00 1.46E+00 5.27E+00 (

WG 13 23997 06/20/95 Fe-59 4.74E+00 3.46E+00 1.19E+01 ;

WG 13 23997 06/20/95 I-131 0.45E+00 2.13E+00 7.53E+00 )

WG 13 23997 06/20/95 K-40 -3.18E+01 1.71E+01 7.06E+01 j WG 13 23997 06/20/95 Mn-54 -1.13E+00 1.03E+00 4.09E+00 WG 13 23997 06/20/95 Ru-103 -2.60E+00 1.18E+00 4.80E+00 WG 13 23997 06/20/95 Ru-106 1.47E+01 1.10E+01 3.78E+01 j WG 13 23997 06/20/95 Sb-124 2.16E+00 3.30E+00 1.20E+01 '

WG 13 23997 06/20/95 Se-75 -0.21E+00 1.38E+00 4.71E+00 WG 13 23997 06/20/95 Zn-65 -4.90E+00 2.19E+00 10.0E+00 WG 13 23997 06/20/95 Zr-95 0.45E+00 1.87E+00 6.72E+00 WG 13 25472 09/14/95 AcTh228 2.12E+00 5.11E+00 1.86E+01 WG 13 25472 09/14/95 Ag-110M 1.62E+00 3.03E+00 1.03E+01 WG 13 25472 09/14/95 Ba-140 -0.14E+00 2.56E+00 1.02E+01 I 4.17E+01 WO 13 25472 09/14/95 Be-7 1.11E+01 1.20E+01 WG 13 25472 09/14/95 Co-141 1.46E+00 2.56E+00 8.41E+00 WG 13 25472 09/1</95 Co-144 -8.86E+00 9.14E+00 3.17E+01 WG 13 25472 09/14/96 Co-57 -1.04E+00 1.20E+00 4.11E+00 WG 13 25472 09/14/95 Co-58 -1.47E+00 1.23E+00 5.22E+00 WO 13 25472 09/14/95 Co-60 1.62E+00 1.62E+00 5.71E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. HDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg)

WO 13 25472 09/14/95 Cr-51 -1.59E+00 1.26E+01 4.60E+01

! WG 13 25472 09/14/95 Cs-134 0.71E+00 1.44E+00 5.17E+00 WG 13 25472 09/14/95' Cs-137 -3.27E+00 . 1.64E+00 7.15E+00 WG 13 25472 09/14/95 Fe-59 -4.23E+00 4.45E+00 1.90E+01 WG 13 25472 09/14/95 I-131 1.27E+00 3.02E+00 1.07E+01 WG 13 25472 09/14/95 K-40 3.99E+00 1.90E+01 7.31E+01 WG 13 25472 09/14/95 Mn-54 -0.42E+00 1.19E+00 4.69E+00 WG 13 25472 09/14/95 Ru-103 -3.75E+00 1.59E+00 6.70E+00 WG 13 25472 09/14/95 Ru-106 -2.22E+01 1.32E+01 5.72E+01 WG 13 25472 09/14/95 sb-124 0.67E+00 3.67E+00 1.45E+01 WG 13 25472 09/14/95 se-75 -0.57E+00 1.68E+00 5.89E+00 WG 13 25472 09/14/95 En-65 3.52E+00 3.37E+00 1.17E+01 l

1 WG 13 25472 09/14/95 Zr-95 3.69E+00 2.87E+00 9.99E+00 WG 13 26964 12/12/95 AcTh228 2.30E+00 3.89E+00 1.35E+01 WG 13 26964 12/12/95 Ag-110M -1.36E+00 1.27E+00 4.86E+00 WG 13 26964 12/12/95 Ba-140 3.66E+00 2.21E+00 7.17E+00 WG 13 26964 12/12/95 Be-7 -4.48E+00 8.04E+00 2.91E+01 WG 13 26964 12/12/95 Co-141 1.36E+00 1.60E+00 5.14E+00 i WG 13 26964 12/12/95 Co-144 1.00E+00 5.32E+00 1.73E+01 4

WG 13 26964 12/12/95 Co-57 -0.11E+00 0.69E+00 2.27E+00 ,

WG 13 26964 12/12/95 Co-58 1.07E+00 0.84E+00 2.73E+00 ;

WG 13 26964 12/12/95 Co-60 -2.18E+00 1.12E+00 4.64E+00 WG 13 26964 12/12/95 Cr-51 4.16E+00 9.84E+00 3.38E+01 l WG 13 26964 12/12/95 Cs-134 -1.20E+00 0.95E+00 3.64E+00

. WG 13 26964 12/12/95 Cs-137 -1.41E+00 0.97E+00 3.82E+00 l WG 13 26964 12/12/95 Fe-59 -6.64E+00 3.16E+00 1.32E+01 WO 13 26964 12/12/95 I-131 4.07E+00 3.02E+00 1.00E+01

, WG 13 26964 12/12/95 K-40 -4.46E+00 1.61E+01 5.82E+01 WG 13 26964 12/12/95 Mn-54 0.56E+00 0.82E+00 2.78E+00 WG 13 26964 12/12/95 Ru-103 1.45E+00 1.07E+00 3.55E+00 WG 13 26964 12/12/95 Ru-106 2.25E+01 8.91E+00 2.88E+01 WG 13 26964 12/12/95 Sb-124 -1.95E+00 2.84E+00 1.10E+01 WG 13 26964 12/12/95 Se-75 0.48E+00 1.04E+00 3.42E+00 WG 13 26964 12/12/95 Zn-65 -1.31E+00 2.11E+00 7.91E+00

WO 13 26964 12/12/95 Zr-95 -2.20E+00 1.61E+00 6.06E+00 4

1

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4 J

1 1

1 l

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/kg) (pCi/kg) (pCi/kg)

WG 01 22150 03/16/95 GR-B 4.87E+00 0.47E+00 1.28E+00

WG 13 22151 03/16/95 GR-B 2.74E+00 0.41E+00 1.17E+00

WG 01 239?6 06/20/95 GR-B 4.74E+00 0.47E+00 1.28E+00

WG 13 23997 06/20/95 GR-B 3.65E+00 0.45E+00 1.25E+00

WG 01 25471 09/14/95 GR-B 4.48E+00 0.46E+00 1.27E+00

WG 13 25472 09/14/95 GR-B 1.66E+01 1.15E+00 2.83E+00

WG 01 26963 12/12/95 GR-B 4.20E+00 0.46E+00 1.28E+00

WG 13 26964 12/12/95 GR-B 2.74E+00 0.41E+00 1.18E+00

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Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l

l Seabrook Station Radiological Environmental (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/kg) (pC1/kg) (pCi/kg) n Ground Water - Quarterly Composites WG 01 22150 03/16/95 H-3 -2.14E+01 2.14E+02 7.06E+02 WG 13 22151 03/16/95 H-3 -1.82E+02 2.02E+02 6.94E+02 WG 01 23996 06/20/95 H-3 3.50E+02 2.05E+02 6.15E+02 WG 13 23997 06/20/95 H-3 3.34E+02 2.06E+02 6.21E+02 WG 01 25471 09/14/95 H-3 1.63E+02 2.48E+02 7.93E+02 WG 13 25472 09/14/95 H-3 8.62E+01 2.48E+02 8.04E+02 WG 01 26963 12/12/95 H-3 5.89E+01 1.99E+02 6.46E+02 WG 13 26964 12/12/95 H-3 1.06E+02 1.95E+02 6.29E+02 t

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4 4

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

]

Pilgrim Nuclear Power Station Radiological Environmental Monitoring System j

Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pC1/kg)

J 8eawater W8 01 21263 01/19/95 AcTh228 -0.61E+00 2.72E+00 9.58E+00 l- W8 01 21263 01/19/95 Ag-110M -1.18E+00 0.94E+00 3.465+00 1 W8 01 21263 01/19/95 Ba-140 0.17E+00 1.57E+00 5.60E+00 W8 01 21263 01/19/95 Be-7 -5.74E+00 5.66E+00 2.03E+01 a W8 01 21263 01/19/95 Co-141 -0.26E+00 1.23E+00 4.01E+00 1 WS 01 21263 01/19/95 Co-144 6.52E+00 4.00E+00 1. 26E+01-

! W8 01 21263 01/19/95 Co-57 -0.36E+00 0.50E+00 1.64E+00 W8 01 21263 01/19/95 Co-58 -0.22E+00 0.67E+00 2.33E+00 i; W8 01 21263 01/19/95 Co-60 -1.03E+00 0.73E+00 2.85E+00 j W8 01 21263 01/19/95 Cr-51 1.30E+01 7.13E+00 2.34E+01

WS 01 21263 01/19/95 Cs-134 1.45E+00 1.22E+00 3.54E+00 i W8 01 21263 01/19/95 Cs-137 0.59E+00 0.72E+00 2.51E+00 W8 01 21263 01/19/95 Fe-59 -1.56E+00 2.19E+00 8.26E+00 i

W8 01 21263 01/19/95 I-131 1.68E+00 2.03E+00 6.82E+00 W8 01 21263 01/19/95 K-40 2.82E+02 1.83E+01 3.81E+01

i WS 01 21263 01/19/95 Mn-54 0.57E+00 0.66E+00 2.16E+00 W8 01 21263 01/19/95 Ru-103 -1.19E+00 0.76E+00 2.77E+00 l Ru-106 0.93E+00 6.27E+00 2.25E+01 Us 01 23263 01/19/95 W8 01 21263 01/19/95 8b-124 -1.55E+00 1.72E+00 6.57E+00 W8 01 21263 01/19/95 Se-75 -0.37E+00 0.77E+00 2.55E+00 W8 01 21263 01/19/95 En-65 -1.49E+00 1.53E+00 5.61E+00 WS 01 21263 01/19/95 Er-95 -0.67E+00 1.10E+00 3.86E+00 q W8 01 21729 02/15/95 AcTh228 -1.23E+00 3.77E+00 1.31E+01

W8 01 21729 02/15/95 Ag-110M -2.16E+00 1.34E+00 4.83E+00 W8 01 21729 02/15/95 Ba-140 -1.03E+00 2.12E+00 7.51E+00 W8 01 21729 02/15/95 Be-7 1.15E+01 9.68E+00 3.21E+01 2.00E+00 6.82E+00 l W8 01 21729 02/15/95 Co-141 -3.68E+00 i

WS 01 21729 02/15/95 Co-144 2.22E+00 6.75E+00 2.25E+01 I

, W8 01 21729 02/15/95 Co-57 1.61E+00 0.87E+00 2.85E+00 )

W8 01 21729 02/15/95 Co-58 -0.71E+00 1.09E+00 3.74E+00 J j W8 01 21729 02/15/95 Co-60 1.18E+00 1.10E+00 3.73E+00 )

W8 01 21729 02/15/95 Cr-51 -8.81E+00 1.12E+01 3.76E+01 j 3.26E+00

. WS 01 21729 02/15/95 Co-134 1.57E+00 0.97E+00 l - W8 01 21729 02/15/95 Cs-137 2.07E+00 1.09E+00 3.63E+00 W8 01 21729 02/15/95 Fe-59 4.53E+00 3.35E+00 1.13E+01

] W8 01 21729 02/15/95 I-131 -0.76E+00 3.59E+00 1.22E+01

! W8 01 21729 02/15/95 K-40 3.01E+02 1.88E+01 3.81E+01 *

! W8 01 21729 02/15/95 Mn-54 8.24E-02 0.97E+00 3.29E+00

W8 01 21729 02/15/95 Ru-103 -0.10E+00 1.26E+00 4.29E+00

, WS 01 21729 02/15/95 Ru-106 -5.85E+00 9.37E+00 3.31E+01 WS 01 21729 02/15/95 8b-124 4.36E+00 2.71E+00 8.89E+00 l' 0.82E+00 1.36E+00 4.44E+00

W8 01 21729 02/15/95 Se-75 WS 01 21729 02/15/95 En-65 -0.69E+00 2.28E+00 7.96E+00 WS 01 21729 02/15/95 Er-95 0.64E+00 1.92E+00 6.42E+00 l WS 01 22185 03/20/95 AcTh228 O.53E+00 2.87E+00 1.01E+01 l W8 01 22185 03/20/95 Ag-110M -1.21E+00 1.03E+00 3.84E+00 4 W8 01 22185 03/20/95 Ba-140 1.55E+00 1.20E+00 3.92E+00 WS 01 22185 03/20/95 Be-7 -6.70E+00 6.70E+00 2.50E+01 W8 01 22185 03/20/95 Co-141 -3.06E+00 1.30E+00 4.41E+00 W8 01 22185 03/20/95 Ce-144 -1.01E+01 4.97E+00 1.67E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1 i__--_-----_ _ _

i d

4 3

. Pilgrim Nuclear Power Station Radiological Environmental Monitoring System

< Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. MDC TYPE STA. LSN . END DATE NUCLIDE (pCi/kg) (pC1/kg) (pci/kg)

~~---------------------

1 i WS 01 22185 03/20/95 Co-57 -0.15E+00 0.62E+00 2.03E+00 WS 01 22185 03/20/95 Co-58 -1.01E+00 0.75E+00 2.73E+00 WS 01 22185 03/20/95 Co-60 1.19E+00 0.82E+00 2.80E+00 WS 01 22185 03/20/95 Cr-51 -1.44E+01 7.14E+00 2.59E+01 4 WS 01 22185 03/20/95 Cs-134 0.37E+00 0.82E+00 2.91E+00

WS 01 22185 03/20/95 Cs-137 0.49E+00 0.76E+00 2.53E+00 WS 01 22185 03/20/95 Fe-59 1.97E+00 2.17E+00 7.64E+00 WS 01 22185 03/20/95 I-131 -4.03E+00 1.39E+00 5.23E+00 WS 01 22185 03/20/95 K-40 3.12E+02 2.20E+01 4.77E+01

WS 01 22185 03/20/95 Mn-54 -1.74E+00 0.77E+00 2.96E+00 WS 01 22185 03/20/95 Ru-103 -1.13E+00 0.89E+00 3.32E+00 J

j WS 01 22185 03/20/95 Ru-106 -1.48E+00 7.20E+00 2.63E+01 WS_ 01 22185 03/20/95 Sb-124 -0.72E+00 1.61E+00 6.06E+00 j WS 01 22185 03/20/95 Se-75 -0.40E+00 1.01E+00 3.50E+00

a. WS 01 22185 03/20/95 En-65 -2.42E+00 1.76E+00 6.65E+00 j WS 01 22185 03/20/95 Er-95 -0.59E+00 1.27E+00 4.48E+00 WS 01 22791 04/18/95 AcTh228 1.27E+00 5.32E+00 1.90E+01

] WS. 01 22791 04/18/95 Ag-110M 0.98E+00 1.77E+00 6.25E+00 WS- 01 22791 04/18/95 Ba-140 2.20E+00 2.05E+00 7.15E+00

?. WS 01 22791 04/18/95 Be-7 2.34E+00 8.91E+00 3.20E+01

WS 01 22791 04/18/95 Co-141 1.89E+00 1.93E+00 6.18E+00 l WS 01 22791 04/18/95 Co-144 -2.68E+00 7.03E+00 2.34E+01 WS 01 22791 04/18/95 Co-57 -2.25E+00 0.90E+00 3.18E+00 WS 01 22791 04/18/95 Co-58 -0.16E+00 1.33E+00 4.74E+00 i WS 01 22791 04/18/95 Co-60 0.39E+00 1.28E+00 4.85E+00 WS 01 22791 04/18/95 Cr-51 2.54E+01 1.17E+01 3.74E+01

WS 01 22791 04/18/95 Co-134 -1.42E+00 1.27E+00 4.99E+00 WS 01 22791 04/18/95 Co-137 9.41E-02 1.19E+00 4.47E+00 i WS 01 22791 04/18/95 Fe-59 -0.85E+00 4.24E+00 1.64E+01 WS 01 22791 04/18/95 I-131 3.83E+00 3.18E+00 1.07E+01 I WS 01 22791 04/18/95 K-40 2.53E+02 3.40E+01 8.50E+01

WS 01 22791 04/18/95 Mn-54 -0.20E+00 1.14E+00 4.14E+00 l

WS 01 22791 04/18/95 Ru-103 -0.60E+00 1.34E+00 4.92E+00

' WS 01 21191 04/18/95 Ru-106 7.08E+00 1.19E+01 4.30E+01 WS 01 22792 04/18/95 Sb-124 2.69E+00 3.08E+00 1.09E+01 WS 01 227t' 04/18/95 Se-75 0.88E+00 1.34E+00 4.41E+00 WS 01 22791 04/18/95 En-65 -1.64E+00 3.00E+00 1.14E+01 3

WS 01 22791 04/18/95 Er-95 1.33E+00 2.14E+00 7.33E+00 WS 01 23614 05/24/95 AcTh228 0.64E+00 4.14E+00 1.48E+01

WS 01 23614 05/24/95 Ag-110M 0.54E+00 1.42E+00 5.03E+00 WS 01 23614 05/24/95 Ba-140 0.56E+00 2.05E+00 7.50E+00

WS 01 23614 05/24/95 Be-7 3.50E+00 7.88E+00 2.76E+01 WS 01 23614 05/24/95 Co-141 -0.84E+00 1.76E+00 5.85E+00 WS 01 23614 05/24/95 Ce-144 3.54E+00 5.79E+00 1.87E+01

) WS 01 23614 05/24/95 Co-57 0.88E+00 0.75E+00 2.403+00 WS 01 23614 05/24/95 Co-58 -0.91E+00 1.03E+00 3.81E+00

. WS 01 23614 05/24/95 Co-60 1.99E+00 1.28E+00 4.33E+00 i WS 01 23614 05/24/95 Cr-51 -8.18E+00 9.90E+00 3.56E+01 WS 01 23614 05/24/95 Cs-134 4.85E-02 0.96E+00 3.55E+00 WS 01 23614 05/24/95 Cs-137 -0.69E+00 0.97E+00 3.79E+00 WS 01 23614 05/24/95 Fe-59 -4.96E+00 3.42E+00 1.40E+01 i WS 01 23614 05/24/95 I-131 2.64E+00 2.19E+00 7.31E+00 t

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i Pilgrim Nuclear Power Station Radiological Environmental Monitoring System Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) _ (pci/kg) (pC1/kg)

WS 01 23614 05/24/95 K-40 3.19E+02 2.80E+01 5.29E+01

WS 01 23614 05/24/95 Mn-54 0.84E+00 0.93E+00 3.12E+00 WS 01 23614 05/24/95 Ru-103 -2.48E+00 1.11E+00 4.31E+00 WS 01 23614 05/24/95 Ru-106 -1.05E+01 9.36E+00 3.65E+01 WS 01 23614 05/24/95 Sb-124 0.00E+00 2.23E+00 8.70E+00 WS 01 23614 05/24/95 Se-75 -0.55E+00 1.11E+00 3.79E+00 WS 01 23614 05/24/95 Zn-65 -3.08E+00 2.38E+00 9.33E+00 WS 01 23614 05/24/95 Zr-95 -1.99E+00 1.77E+00 6.62E+00 WS 01 24086 06/19/95 AcTh228 6.61E+00 5.94E+00 2.00E+01 WS 01 24086 06/19/95 Ag-110M -2.50E+00 2.40E+00 8.80E+00 WS 01 24086 06/19/95 Ba-140 -0.69E+00 2.57E+00 9.40E+00 WS 01 24086 06/19/95 Be-7 6.72E+00 1.45E+01 4.97E+01 WS 01 24096 06/19/95 Co-141 -3.06E+00 2.80E+00 9.64E+00 WS 01 24025 06/19/95 Co-144 -2.43E+01 1.09E+01 3.81E+01 WS 01 24086 06/19/95 Co-57 -1.92E+00 1.41E+00 4.88E+00 WS 01 24086 06/19/95 Co-58 -2.79E+00 1.65E+00 6.12E+00 WS 01 24086 06/19/95 Co-60 -0.29E+00 1.85E+00 6.81E+00 WS 01 24086 06/19/95 Cr-51 -4.76E+00 1.54E+01 5.21E+01 WS 01 24086 06/19/95 Cs-134 1.67E+00 1.72E+00 5.87E+00 WS 01 24086 06/19/95 Cs-137 1.95E+00 1.65E+00 5.64E+00 WS 01 24086 06/19/95 Fe-59 0.34E+00 4.56E+00 1.66E+01 WS 01 24086 06/19/95 I-131 -4.96E+00 3.25E+00 1.16E+01 WS 01 24086 06/19/95 K-40 3.37E+02 3.12E+01 6.81E+01

WS 01 24086 06/19/95 Mn-54 -0.87E+00 1.56E+00 5.55E+00 WS 01 24086 06/19/95 Ru-103 -1.57E+00 1.86E+00 6.61E+00 WS 01 24086 06/19/95 Ru-106 1.06E+00 1.48E+01 5.27E+01 WS 01 24086 06/19/95 Sb-124 4.47E+00 3.65E+00 1.23E+01 WS 01 24086 06/19/95 Se-75 1.20E+00 2.06E+00 6.79E+00

WS 01 24086 06/19/95 Zn-65 1.80E+00 3.36E+00 1.17E+01

WS 01 24086 06/19/95 Zr-95 3.23E+00 2.89E+00 9.55E+00 WS 01 24630 07/20/95 AcTh228 -1.41E+00 3.31E+00 1.21E+01 WS 01 24630 07/20/95 Ag-110M -0.40E+00 1.18E+00 4.32E+00 WS 01 24630 07/20/95 Ba-140 -1.32E+00 1.11E+00 4.54E+00 WS 01 24630 07/20/95 Be-7 9.60E+00 7.73E+00 2.67E+01 WS 01 24630 07/20/95 Ce-141 -1.18E+00 1.51E+00 5.03E+00 WS 01 24630 07/20/95 Co-144 2.29E+00 5.41E+00 1.75E+01 WS 01 24630 07/20/95 Co-57 1.29E+00 0.71E+00 2.21E+00 WS 01 24630 07/20/95 Co-58 0.52E+00 0.82E+00 2.76E+00 WS 01 24630 07/20/95 Co-60 0.33E+00 0.93E+00 3.44E+00 WS 01 24630 07/20/95 Cr-51 -2.20E+00 8.12E+00 2.84E+01 WS 01 24630 07/20/95 Cs-134 -1.19E+00 0.93E+00 3.56E+00 WS 01 24630 07/20/95 Cs-137 4.47E-02 0.83E+00 2.87E+00 WS 01 24630 07/20/95 Fe-59 -0.97E+00 2.85E+00 1.08E+01 WS 01 24630 07/20/95 I-131 -0.73E+00 1.68E+00 5.95E+00 WS 01 24630 07/20/95 K-40 3.27E+02 2.57E+01 5.53E+01

WS 01 24630 07/20/95 Mn-54 -1.39E+00 0.93E+00 3.54E+00 WS 01 24630 07/20/95 Ru-103 -2.85E+00 1.05E+00 4.14E+00 WS 01 24630 07/20/95 Ru-106 -7.89E+00 8.18E+00 3.12E+01 WS 01 24630 07/20/95 Sb-124 0.92E+00 1.95E+00 6.92E+00 WS 01 24630 07/20/95 Se-75 -1.01E+00 1.12E+00 3.97E+00 WS 01 24630 07/20/95 Zn-65 -2.31E+00 1.85E+00 7.15E+00 WS 01 24630 07/20/95 Zr-95 -2.07E+00 1.31E+00 5.02E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1 l

l Pilgrim Nuclear Power Station Radiological Environmental Monitoring System Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/kg) (pC1/kg) (pci/kg)

~~--------------------------~~-----------------------------

WS 01 25058 08/21/95 AcTh228 -3.73E+00 4.33E+00 1.62E+01 WS 01 25058 08/21/95 Ag-110M 0.90E+00 1.51E+00 5.28E+00 WS 01 25058 08/21/95 Ba-140 -0.82E+00 1.83E+00 7.20E+00 WS 01 25058 08/21/95 Be-7 2.35E+00 9.34E+00 3.27E+01 WS 01 25058 08/21/95 Co-141 0.72E+00 1.77E+00 5.72E+00 WS 01 25058 08/21/95 Co-144 -0.88E+00 6.08E+00 2.00E+01 WS 01 25058 08/21/95 Co-57 -0.77E+00 0.79E+00 2.65E+00 WS 01 25058 08/21/95 Co-58 0.26E+00 0.975+00 3.40E+00 WS 01 25058 08/21/95 Co-60 -2.96E+00 1.52E+00 6.19E+00 WS 01 25058 08/21/95 Cr-51 -6.74E+00 1.08E+01 3.84E+01 WS 01 25058 08/21/95 Cs-134 3.14E+00 2.10E+00 5.95E+00 WS 01 25058 08/21/95 Cs-137 1.52E+00 1.08E+00 3.70E+00 WS 01 25058 08/21/95 Fe-59 -4.27E+00 3.30E+00 1.35E+01 WS 01 25058 08/21/95 I-131 4.41E+00 2.55E+00 8.34E+00 WS 01 25058 08/21/95 K-40 2.19E+02 2.70E+01 6.62E+01

WS 01 25058 08/21/95 Mn-54 0.73E+00 0.93E+00 3.13E+00 WS 01 25058 08/21/95 Ru-103 1.08E+00 1.07E+00 3.63E+00 WS 01 25058 08/21/95 Ru-106 6.74E+00 9.88E+00 3.52E+01 WS 01 25058 08/21/95 Sb-124 -1.00E+00 2.12E+00 8.69E+00 WS 01 25058 08/21/95 Se-75 -0.19E+00 1.18E+00 3.94E+00 WS 01 25058 08/21/95 En-65 -5.28E+00 2.58E+00 1.03E+01 WS 01 25058 08/21/95 Zr-95 1.53E+00 1.73E+00 5.77E+00 WS 01 25565 09/25/95 AcTh228 3.46E+00 4.59E+00 1.59E+01 WS 01 25565 09/25/95 Ag-110M -0.26E+00 1.52E+00 5.60E+00 WS 01 25565 09/25/95 Ba-140 3.08E+00 2.26E+00 7.39E+00 WS 01 25565 09/25/95 Be-7 4.17E-02 1.10E+01 4.03E+01 WS 01 25565 09/25/95 Co-141 1.17E+00 2.27E+00 7.36E+00 WS 01 25565 09/25/95 Co-144 1.07E+00 7.47E+00 2.44E+01 WS 01 25565 09/25/95 Co-57 0.33E+00 0.97E+00 3.16E+00 WS 01 25565 09/25/95 Co-58 -1.96E+00 1.25E+00 4.74E+00 1 WS 01 25565 09/25/95 Co-60 -1.06E+00 1.25E+00 5.05E+00 WS 01 25565 09/25/95 Cr-51 -7.31E+00 1.24E+01 4.41E+01 WS 01 25565 09/25/95 Cs-134 6.03E-02 1.29E+00 4.72E+00 l WS 01 25565 09/25/95 Cs-137 -1.29E+00 1.16E+00 4.27E+00 '

WS 01 25565 09/25/95 Fe-59 0.50E+00 3.20E+00 1.21E+01 WS 01 25565 09/25/95 I-131 -0.52E+00 3.10E+00 1.10E+01 ;

WS 01 25565 09/25/95 K-40 3.21E+02 3.12E+01 6.78E+01

1.18E+00 4.72E+00 I WS 01 25565 09/25/95 Mn-54 -2.53E+00 WS 01 25565 09/25/95 Ru-103 0.30E+00 1.46E+00 5.27E+00 )

WS 01 25565 09/25/95 Ru-106 -1.65E+01 1.04E+01 4.16E+01 1 I

WS 01 25565 09/25/95 Sb-124 -3.13E+00 2.39E+00 1.03E+01 WS 01 25565 09/25/95 Se-75 -3.52E+00 1.67E+00 6.11E+00 ,

l WS 01 25565 09/25/95 Zn-65 -0.70E+00 2.27E+00 8.59E+00 l WS 01 25565 09/25/95 Zr-95 -0.33E+00 1.82E+00 6.55E+00 )

1 WS 01 26210 10/23/95 AcTh228 0.46E+00 3.08E+00 1.07E+01 l WS 01 26210 10/23/95 Ag-110M -0.32E+00 1.08E+00 3.79E+00 I WS 01 26210 10/23/95 Ba-140 1.22E+00 1.67E+00 5.72E+00 WS 01 26210 10/23/95 Be-7 2.26E+00 7.46E+00 2.58E+01 WS 01 26210 10/23/95 Co-141 -0.88E+00 1.44E+00 4.76E+00 ,

WS 01 26210 10/23/95 Co-144 -2.58E+00 4.96E+00 1.63E+01 l WS 01 26210 10/23/95 Co-57 0.65E+00 0.64E+00 2.05E+00 (

WS 01 26210 10/23/95 Co-58 0.74E+00 0.90E+00 2.99E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1

4 F

2 Pilgrim Nuclear Power station l

Radiological Environmental Monitoring system

summary of First Quarter 1993 Data i SAMPLE CONC. STD DEV. MDC TYPE STA. LsN- END DATE NUCLIDE (pCi/kg) (pCi/kg) (pci/kg) j WS 01 26210 10/23/95 Co-60 1.75E+00 0.88E+00 2.81E+00 j W8 01 26210 10/23/95 Cr-51 -1.07E+01 8.775+00 3.12E+01

' W8 01 26210 10/23/95 Cs-134 -0.61E+00 0.81E+00 2.93E+00 Ws 01 26210 10/23/95 Cs-137 0.81E+00 0.89E+00 3.14E+00 i W8 01 26210 10/23/95 Fe-59 -1.295+00 2.66E+00 9.885+00 Ws 01 26210 10/23/95 I-131 -2.94E+00 2.40E+00 8.60E+00 j W8 01 26210 10/23/95 K-40 2.99E+02 2.23E+01 4.47E+01 *

Ws 01 26210 10/23/95 Mn-54 -1.56E+00 0.68E+00 2.65E+00 WS 01 26210 10/23/95 Ru-103 -2.26E+00 0.94E+00 3.55E+00 Ws 01 26210 10/23/95 Ru-106 1.11E+01 7.76E+00 2.66E+01 W8 01 26210 10/23/95 sb-124 -0.54E+00 2.12E+00 7.84E+00 j- W8 01 26210 10/23/95 se-75 -0.47E+00 0.92E+00 3.08E+00

W8 01 26210 10/23/95 En-65 -2.26E+00 1.98E+00 7.44E+00 i W8 01 26210 10/23/95 Er-95 1.26E+00 1.79E+00 6.35E+00

}- 'Ws 01 26843 11/30/95 AcTh228 1.17E+01 6.30E+00 2.02E+01 j' WS 01 26843 11/30/95 Ag-110M 2.23E+00 2.29E+00 7.92E+00 3

WS 01 26843 11/30/95 Ba-140 -1.27E+00 2.69E+00 1.11E+01 L W8 01 26843 11/30/95 Be-7 -5.15E+00 1.20E+01 4.54E+01

WS 01 26843 11/30/95 Co-141 2.97E+00 2.41E+00 7.70E+00 l W8 01 26843 '11/30/95 Co-144 -1.76E+01 9.06E+00 3.21E+01

", W8 01 26843 11/30/95 Co-57 0.12E+00 1.16E+00 3.83E+00 l 4 WG 01 2684J 11/30/95 Co-58 0.44E+00 1.29E+00 4.68E+00 I l

j WS 01 26843 11/30/95 Co-60 0.49E+00 1.55E+00 6.04E+00 d

W8 01 26843 11/30/95 Cr-51 8.85E+00 1.43E+01 4.95E+01 i W8 01 26643 11/30/95 Cs-134 -0.39E+00 1.55E+00 6.11E+00 W8 01 26843 11/30/95 Cs-137 0.57E+00 1.59E+00 5.95E+00 i W8 01 26843 11/30/95 Fe-59 -0.60E+00 5.27E+00 2.06E+01 i WS 01 26843 11/30/95 I-131 -6.55E+00 2.99E+00 1.19E+01 WS 01 26843 11/30/95 K-40 3.64E+02 4.24E+01 7.92E+01 *

WS 01 26843 11/30/95 Mn-54 -9.59E-02 1.49E+00 5.475+00

WS 01 26843 11/30/95 Ru-103 -1.30E+00 1.65E+00 6.29E+00 Ws 01 26843 11/30/95 Ru-106 1.88E+01 1.24E+01 4.24E+01

. WS. 01 26843 11/30/95 sb-124 2.03E+00 2.48E+00 9.40E+00

Ws 01 26843 11/30/95 so-75 -1.97E+00 1.74E+00 6.23E+00 W8 01 26843 11/30/95 En-65 1.29E+00 4.63E+00 1.64E+01

WS 01 26843 11/30/95 Er-95 2.83E+00 2.69E+00 9.00E+00 WS 01 27208 12/26/95 AcTh228 2.48E+00 3.34E+00 1.15E+01 l 1.10E+00 1.10E+00 3.77E+00 i WS 01 27208 12/26/95 Ag-110M i WS 01 27208 12/26/95 Ba-140 -0.29E+00 1.88E+00 7.15E+00 i WS 01 27208 12/26/95 Be-7 3.93E+00 8.01E+00 2.76E+01 i W8 01 27208 12/26/95 Co-141 -1.17E+00 1.59E+00 5.30E+00 i l WS 01 27208 12/26/95 Co-144 1.97E+00 5.31E+00 1.72E+01 i d

WS 01 27208 12/26/95 Co-57 0.48E+00 0.69E+00 2.20E+00 ]

WS 01 27208 12/26/95 Co-58 -1.28E+00 0.88E+00 3.31E+00 i WS 01 27208 12/26/95 Co-60 0.94E+00 0.91E+00 3.18E+00 I i W8 01 27208 12/26/95 Cr-51 1.39E+01 9.77E+00 3.23E+01 l l WS 01 27208 12/26/95 Cs-134 -0.39E+00 0.90E+00 3.32E+00 !

WS 01 27208 12/26/95- Cs-137 -0.53E+00 0.89E+00 3.37E+00 W8 01 27208 12/26/95 Fe-59 5.26E+00 3.06E+00 1.02E+01 l- 6.14E+00 3.01E+00 9.72E+00

W8 01 27208 12/26/95 I-131

WS 01 27208 12/26/95 K-40 3.29E+02 2.42E+01 4.24E+01 *

- WS 01 27208 12/26/95 Mn-54 0.52E+00 0.76E+00 2.57E+00 4-j

Radioactivity detected (i.e., Concentration is > 3 std. Deviations).

l 4

l

i Pilgrim Nuclear Power Station Radiological Environmental Monitoring System Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

WS 01 27208 12/26/95 Ru-103 -2.92E+00 1.08E+00 4.17E+00 WS 01 27208 12/26/95 Ru-106 1.38E+01 7.71E+00 2.60E+01 WS 01 27208 12/26/95 Sb-124 -0.40E+00 2.21E+00 8.46E+00 WS 01 27208 12/26/95 Se-75 0.89E+00 1.09E+00 3.50E+00 WS 01 27208 12/26/95 En-65 -2.10E+00 1.98E+00 7.56E+00 WS 01 27208 12/26/95 Zr-95 -1.51E+00 1.60E+00 5.84E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Pilgrim Nuclear Power Station Radiological Environmental Monitoring System Summary of First Quarter 1993 Data 8 AMPLE CONC.. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pCi/kg) (pC1/kg) (pci/kg)

WS 51 21264 01/19/95 AcTh228 1.51E+00 2.44E+00 8.27E+00 W8 51 21264 01/19/95 Ag-110M 0.70E+00 0.77E+00 2.60E+00 WS 51 21264 01/19/95 Ba-140 -0.45E+00 1.32E+00 4.65E+00 W8 51 21264 01/19/95 Be-7 4.55E+00 5.87E+00 2.04E+01 WS 51 21264 01/19/95 Co-141 -0.26E+00 1.10E+00 3.58E+00 WS 51 21264 01/19/95 Co-144 -1.07E+01 3.65E+00 1.23E+01 W8 51 21264 01/19/95 Co-57 0.18E+00 0.48E+00 1.54E+00 WS 51 21264 01/19/95 Co-58 -0.72E+00 0.52E+00 1.86E+00 WS 51 21264 01/19/95 Co-60 0.19E+00 0.64E+00 2.29E+00 WS 51 21264 01/19/95 Cr-51 -1.36E+01 6.43E+00 2.28E+01 WS 51 21264 01/19/95 Cs-134 0.74E+00 1.08E+00 3.18E+00 WS 51 21264 01/19/95 Cs-137 0.53E+00 0.55E+00 1.80E+00 WS 51 21264 01/19/95 Fe-59 4.03E+00 1.91E+00 6.32E+00 WS 51 21264 01/19/95 I-131 2.25E+00 1.87E+00 6.20E+00 WS 51 21264 01/19/95 K-40 2.71E+02 1.54E+01 3.26E+01

WS 51 21264 01/19/95 Mn-54 -1.44E+00 0.61E+00 2.28E+00 WS 51 21264 01/19/95 Ru-103 - -6.29E-02 0.76E+00 2.69E+00 WS 51 21264 01/19/95 Ru-106 9.18E+00 5.63E+00 1.92E+01 WS 51 21264 01/19/95 sb-124 -0.49E+00 1.41E+00 5.05E+00 WS 51 21264 01/19/95 Se-75 -0.45E+00 0.79E+00 2.71E+00 WS 51 21264 01/19/95 En-65 -1.31E+00 1.28E+00 4.63E+00 WS 51 21264 01/19/95 Er-95 -0.64E+00 1.03E+00 3.57E+00 WS- 51 21730 02/15/95 AcTh228 3.99E+00 2.98E+00 9.90E+00 WS 51 21730 02/15/95 Ag-110M 1.05E+00 1.13E+00 3.84E+00 WS 51 21730 02/15/95 Ba-140 2.01E+00 2.56E+00 9.04E+00 WS 51 21730 02/15/95 Be-7 -5.96E+00 8.32E+00 3.06E+01 WS 51 21730 02/15/95 Co-141 2.26E+00 1.85E+00 6.14E+00 WS 51 21730 02/15/95 Co-144 -8.48E+00 5.73E+00 1.99E+01 WS 51 21730 02/15/95 Co-57 -1.02E+00 0.76E+00 2.62E+00 WS 51 21730 02/15/95 Co-58 1.98E+00 0.92E+00 2.96E+00 WS 51 21730 02/15/95 Co-60 0.00E+00 1.00E+00 3.55E+00 WS 51 21730 02/15/95 Cr-51 -8.69E+00 9.92E+00 3.49E+01 WS 51 21730 02/15/95 Cs-134 -0.22E+00 1.15E+00 3.98E+00 WS 51 21730 02/15/95 Cs-137 0.43E+00 0.76E+00 2.55E+00 WS 51 21730 02/15/95 Fe-59 -1.91E+00 2.37E+00 8.80E+00 WS 51 21730 02/15/95 I-131 -2.50E+00 3.91E+00 1.38E+01 WS 51 21730 02/15/95 K-40 3.03E+02 2.01E+01 3.90E+01

WS 51 21730 02/15/95 Mn-54 -0.14E+00 0.77E+00 2.77E+00 WS 51 21730 02/15/95 Ru-103 -2.46E+00 1.15E+00 4.39E+00

, WS 51 21730 02/15/95 Ru-106 -2.52E+00 7.32E+00 2.51E+01 i WS 51 21730 02/15/95 Sb-124 3.89E+00 2.32E+00 7.71E+00 i WS 51 21730 02/15/95 Se-75 0.26E+00 1.08E+00 3.68E+00 i WS 51 21730 02/15/95 En-65 -2.49E+00 2.10E+00 7.94E+00 WS 51 21730 02/15/95 Er-95 1.43E+00 1.71E+00 5.80E+00 WS 51 22186 03/20/95 AcTh228 -1.77E+00 3.56E+00 1.30E+01 WS 51 22186 03/20/95 Ag-110M 1.08E+00 1.25E+00 4.29E+00

! WS 51 22186 03/20/95 Ba-140 1.10E+00 1.44E+00 5.05E+00 i WS 51 22186 03/20/95 Be-7 -1.24E+00 6.95E+00 2.47E+01 WS 51 22186 03/20/95 Co-141 1.55E+00 1.42E+00 4.54E+00 1 WS 51 22186 03/20/95 Co-144 -1.38E+00 5.04E+00 1.66E+01 W8 51 22186 03/20/95 Co-57 -0.68E+00 0.65E+00 2.18E+00 l WS 51 22186 03/20/95 Co-58 -0.96E+00 0.82E+00 3.03E+00 ;

1

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

I

Pilgrim Nuclear Power Station Radiological Environmental Monitoring System Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

WS 51 22186 03/20/95 Co-60 0.69E+00 1.04E+00 .3.74E+00 WS 51 22186 03/20/95 Cr-51 3.16E+00 8.40E+00 2.87E+01 WS 51 22186 03/20/95 Cs-134 -4.84E-02 0.83E+00 3.04E+00 WS 51 22186 03/20/95 Cs-137 -0.32E+00 0.90E+00 3.35E+00 WS 51 22186 03/20/95 Fe-59 3.52E+00 2.72E+00 9.35E+00 WS 51 22186 03/20/95 I-131 0.47E+00 1.54E+00 5.33E+00 WS 51 22186 03/20/95 K-40 2.31E+02 2.27E+01 5.11E+01

WS 51 22186 03/20/95 Mn-54 -1.51E+00 0.72E+00 2.82E+00 WS 51 22186 03/20/95 Ru-103 -0.93E+00 0.86E+00 3.17E+00 WS 51 22186 03/20/95 Ru-106 4.59E+00 7.25E+00 2.59E+01 WS 51 22186 03/20/95 Sb-124 3.28E+00 2.28E+00 7.56E+00 WS 51 22186 03/20/95 Se-75 -1.11E+00 0.95E+00 3.26E+00 WS 51 22186 03/20/95 Zn-65 -0.70E+00 2.05E+00 7.50E+00 WS 51 22186 03/20/95 Zr-95 0.62E+00 1.48E+00 5.05E+00 WS 51 22792 04/18/95 AcTh228 1.21E+01 5.16E+00 1.59E+01 WS 51 22792 04/18/95 Ag-110M -0.27E+00 1.87E+00 6.96E+00 WS 51 22792 04/18/95 Ba-140 -5.48E+00 2.46E+00 1.14E+01 WS 51 22792 04/18/95 Be-7 -1.44E+01 1.15E+01 4.39E+01 WS 51 22792 04/18/95 Co-141 1.84E+00 2.22E+00 7.20E+00 WS 51 22792 04/18/95 Co-144 -1.82E+01 8.14E+00 2.85E+01 WS 51 22792 04/18/95 Co-57 -0.49E+00 0.97E+00 3.26E+00 WS 51 22792 04/18/95 Co-58 -1.38E+00 1.25E+00 4.85E+00 WS 51 22792 04/18/95 Co-60 0.13E+00 1.45E+00 5.61E+00 WS 51 22792 04/18/95 Cr-51 3.51E+00 1.34E+01 4.67E+01 WS 51 22792 04/18/95 Cs-134 0.97E+00 1.24E+00 4.43E+00 WS 51 22792 04/18/95 Cs-137 -1.45E+00 1.32E+00 5.31E+00 WS 51 22792 04/18/95 Fe-59 2.06E+00 3.92E+00 1.46E+01 WS 51 22792 04/18/95 I-131 -1.00E+00 3.56E+00 1.28E+01 WS 51 22792 04/18/95 K-40 2.52E+02 3.30E+01 7.51E+01

WS 51 22792 04/18/95 Mn-54 -1.93E+00 1.36E+00 5.22E+00 WS 51 22792 04/18/95 Ru-103 -2.68E+00 1.42E+00 5.61E+00 WS 51 22792 04/18/95 Ru-106 0.75E+00 1.25E+01 4.64E+01 WS 51 22792 04/18/95 Sb-124 -0.77E+00 2.96E+00 1.21E+01 WS 51 22792 04/18/95 Se-75 -1.84E+00 1.46E+00 5.19E+00 WS 51 22792 04/18/95 Zn-65 -0.11E+00 5.73E+00 2.25E+01 WS 51 22792 04/1E/95 Zr-95 2.95E+00 2.44E+00 7.98E+00 WS 51 23615 05/23/95 AcTh228 -1.87E+00 4.07E+00 1.50E+01 WS 51 23615 05/23/95 Ag-110M 0.72E+00 1.41E+00 4.98E+00 WS 51 23615 05/23/95 Ba-140 -2.77E+00 2.08E+00 8.49E+00 WS Si 23615 05/23/95 Be-7 5.10E+00 8.24E+00 2.85E+01 WS 51 23615 05/23/95 Co-141 -2.31E+00 1.60E+00 5.45E+00 WS 51 23615 05/23/95 Ce-144 -2.95E+00 5.98E+00 1.98E+01 WS 51 23615 05/23/95 Co-57 -0.91E+00 0.76E+00 2.56E+00 WS 51 23615 05/23/95 Co-58 -9.91E-02 0.98E+00 3.50E+00 WS 51 23615 05/23/95 Co-60 -1.09E+00 1.04E+00 4.30E+00 WS 51 23615 05/23/95 Cr-51 -2.25E+00 1.02E+01 3.57E+01 WS 51 23615 05/23/95 Cs-134 -0.80E+00 1.07E+00 4.05E+00 WS 51 23615 05/23/95 Cs-137 -0.86E+00 1.00E+00 3.91E+00 WS 51 23615 05/23/95 Fe-59 1.90E+00 3.09E+00 1.12E+01 WS 51 23615 05/23/95 I-131 -0.81E+00 2.40E+00 8.55E+00 WS 51 23615 05/23/95 K-40 2.27E+02 2.66E+01 6.29E+01

WS 51 23615 05/23/95 Mn-54 -3.38E-02 0.96E+00 3.39E+00

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

2A e--m-+f J6 A J--eAJi..a.4 --J-->A- 4e.Mh,h tsh, aaa 844 mm d.s a-+s-a'----h m---d.- - --- -e e J-r #

A +- . - - .W3 ,..J.J-- -. 4#.-d----wS4+ i 4 a b e - -

I Pilgrim Nuclear Power Station Radiological Environmental Monitoring System Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pCi/kg) 1 WS 51 23615 05/23/95 Ru-103 -0.875+00 1.13E+00 4.13E+00 WS 51 23615 05/23/95 Ru-106 2.96E+00 9.56E+00 3.48E+01 WS 51 23615 05/23/95 Sb-124 1.00E+00 2.34E+00 8.70E+00 i

WS 51 23615 05/23/95 Se-75 1.50E+00 1.23E+00 3.92E+00

, WS 51 23615 05/23/95 En-65 0.31E+00 2.39E+00 8.62E+00 WS 51 23615 05/23/95 Er-95 1.82E+00 1.56E+00 5.15E+00

WS 51 24087 06/19/95 AcTh228 0.96E+00 4.22E+00 1.47E+01 WS 51 24087 06/19/95 Ag-110M 0.66E+00 1.34E+00 4.63E+00 WS 51 24087 06/19/95 - Ba-140 0.48E+00 1.68E+00 6.11E+00 1 WS 51 24087 06/19/95 Be-7 3.54E+00 7.90E+00 2.77E+01 WS 51 24087 06/19/95 Co-141 1.88E+00 1.61E+00 5.14E+00 WS 51 24087 06/19/95 Co-144 4.98E+00 6.28E+00 2.02E+01 0.77E+00 2.60E+00 MS 51 24087 06/19/95 Co-57 -0.83E+00 1.19E+00 4.43E+00

+

' WS 51 24087 06/19/95 Co-58 -1.58E+00 WS 51 24087 06/19/95 Co-60 -0.78E+00 1.06E+00 4.25E+00 i WS 51 24087 06/19/95 Cr-51 1.85E+00 9.09E+00 3.17E+01

! WS 51 24087 06/19/95 Co-134 -1.02E+00 0.98E+00 3.72E+00 WS .51 24087 06/19/95 Cs-137 -1.19E+00 1.18E+00 4.60E+00 l

j . WS 51 24087 06/19/95 Fe-59 4.48E+00 2.77E+00 9.03E+00 WS 51 24087 06/19/95 I-131 -3.03E+00 1.80E+00 6.81E+00 j WS 51 24087 06/19/95 K-40 2.96E+02 2.91E+01 6.12E+01 *

WS 51 24087 06/19/95 Mn-54 -1.12E+00 0.90E+00 3.46E+00 ,

i WS 51 24087 06/19/95 Ru-103 -0.28E+00 1.06E+00 3.83E+00 1

WS 51 24087 06/19/95 Ru-106 1.26E+01 9.23E+00 3.18E+01

, WS 51 24087 06/19/95 Sb-124 -1.91E+00 2.40E+00 9.76E+00 l l WS 51 24087 06/19/95 Se-75 -0.27E+00 1.08E+00 3.67E+00 l 1 WS 51 24087 06/19/95 En-65 -2.70E+00 2.43E+00 9.50E+00 WS 51 24087 06/19/95 Er-95 -2.20E+00 1.76E+00 7.15E+00 l

l WS 51 24631 07/20/95 AcTh228 8.50E+00 5.26E+00 1.59E+01 )

WS 51 24631 07/20/95 Ag-110M -2.88E+00 1.30E+00 5.37E+00 i WS 51 24631 07/20/95 Ba-140 -1.90E+00 1.64E+00 6.73E+00 4

WS 51 24631 07/20/95 De-7 -5.80E+00 7.90E+00 2.92E+01 ,

4 WS 51 24631 07/20/95 Co-141 -3.52E+00 1.55E+00 5.41E+00 l WS 51 24631 07/20/95 Co-144 4.00E+00 5.74E+00 1.85E+01 WS 51 24631 07/20/95 Co-57 -0.11E+00 0.74E+00 2.45E+00

, WS 51 24631 07/20/95 Co-58 -0.50E+00 1.04E+00 3.74E+00 j WS 51 24631 07/20/95 Co-60 -5.53E-02 1.08E+00 4.16E+00 i' WS 51 24631 07/20/95 Cr-51 1.27E+01 9.00E+00 2.98E+01 WS 51 24631 07/20/95 Cs-134 1.66E+00 1.58E+00 4.75E+00 i WS 51 24631 07/20/95 Cs-137 0.57E+00 0.96E+00 3.48E+00 i WS 51 24631 07/20/95 Fe-59 1.32E+00 3.03E+00 1.12E+01 WS 51 24631 07/20/95 I-131 -1.74E+00 1.74E+00 6.41E+00

WS 51 24631 07/20/95 K-40 2.89E+02 2.82E+01 6.08E+01

i WS 51 24631 07/20/95 Mn-54 -0.54E+00 0.82E+00 3.06E+00 j WS 51 24631 07/20/95 Ru-103 -1.15E+00 0.94E+00 3.57E+00

WS 51- 24631 07/20/95 Ru-106 -0.17E+00 9.60E+00 3.55E+01 j WS 51 24631 07/20/95 Sb-124 0.66E+00 2.52E+00 9.39E+00 j WS 51 24631 07/20/95 Se-75 0.90E+00 1.12E+00 3.63E+00 j WS 51. 24631 07/20/95 En-65 0.00E+00 2.29E+00 8.38E+00 j WS 51 24631 07/20/95 Er-95 -0.85E+00 1.64E+00 5.98E+00 WS 51 25059 08/21/95 AcTh228 1.53E+00 3.29E+00 1.08E+01

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l

- . -- _ . - . . -__ _ . .. _ .___ ___ . _ = _ _ . _ . _ _ __

a j

Pilgrim Nuclear Power Station

' Radiological Environmental Monitoring System

' Summary of First Quarter 1993 Data SAMPLE CONC. STD DEV. HDC TYPE STA. LSN END DATE NUCLIDE (pci/kg) (pci/kg) (pci/kg)

WS 51 25059 08/21/95 Ag-110M - 0.79E+00 1.31E+00 4.88E+00 WS 51 25059 08/21/95 Ba-140 -

2.28E+00 2.02E+00 8.16E+00 WS 51 25059 08/21/95 Be-7 5.06E+00 9.57E+00 3.32E+01 WS 51 25059 08/21/95 Co-141 1.01E+00 1.70E+00 5.53E+00' l WS 51 25059 08/21/95 Co-144 -

0.40E+00 6.61E+00 2.17E+01 l WS 51 25059. 08/21/95 Co-57 -2.14E+00 0.82E+00 2.85E+00 WS 51 25059 08/21/95 Co-58 2.16E+00 1.06E+00 3.26E+00

. WS 51 25059 08/21/95 Co-60 0.97E+00 1.18E+00 4.15E+00 j WS 51 25059 08/21/95 Cr-51 - 7.14E+00 1.06E+01 3.78E+01 l

~

'WS 51 25059 08/21/95 Cs-134 -

1.14E+00 1.08E+00 4.04E+00 WS 51 25059 08/21/95 Cs-137 0.41E+00 1.10E+00 4.00E+00 WS 51 25059 08/21/95 Fe-59 3.13E+00 3.13E+00 1.08E+01 l I

WS 51 25059 08/21/95 I-131 2.18E+00 2.41E+00 8.19E+00 l l

WS 51 25059 08/21/95 K-40 3.06E+02 2.82E+01 5.36E+01 * (

i WS 51 25059 08/21/95 Mn-54 -

0.19E+00 0.92E+00 3.32E+00 WS 51 25059 08/21/95 Ru-103 -

0.77E+00 1.07E+00 3.96E+00 4

WS- 51 25059 08/21/95 Ru-106 -

1.39E+00 8.88E+00 3.35E+01

j. WS 51 25059 08/21/95 Sb-124 2.80E+00 2.69E+00 9.13E+00 WS 51 25059 08/21/95 So-75 0.83E+00 1.15E+00 3.74E+00 l

! WS 51 25059 08/21/95 En-65 1.02E+00 2.33E+00 8.34E+00 WS 51 25059 08/21/95 Er-95 -

0.29E+00 2.17E+00 8.15E+00 t

WS 51 25566 09/25/95 AcTh228 - 2.13E+00 5.44E+00 2.03E+01 i WS 51 25566 09/25/95 Ag-110M -

0.27E+00 1.91E+00 7.10E+00 WS 51 25566 09/25/95 Ba-140 -

2.77E+00 2.29E+00 1.01E+01

WS 51 25566 09/25/95 Be-7 -

5.24E+00 1.05E+01 3.91E+01

WS 51 25566 09/25/95 Co-141 -

2.14E+00 2.11E+00 7.24E+00 WS 51 25566 09/25/95 Co-144 -

2.95E+00 7.54E+00 2.53E+01 WS 51 25566 09/25/95 Co-57 0.58E+00 0.97E+00 3.14E+00 WS 51 25566 09/25/95 Co-58 0.66E+00 1.16E+00 4.05E+00 WS 51 25566 09/25/95 Co-60 -6.73E-02 1.31E+00 5.18E+00

WS 51 25566 09/25/95 Cr-51 2.46E+01 1.29E+01 4.18E+01 l WS 51 25566 09/25/95 Cs-134 1.29E+00 1.24E+00 4.35E+00 WS 51 25566 09/25/95 Cs-137 -

1.72E+00 1.39E+00 5.59E+00 l WS 51 25566 09/25/95 Fe-59 -

4.58E+00 4.45E+00 1.83E+01 i WS 51 25566 09/25/95 I-131 -

2.69E+00 3.16E+00 1.18E+01

WS 51 25566 09/25/95 K-40 2.98E+02 3.40E+01 7.05E+01

WS 51 25566 09/25/95 Mn-54 -

0.61E+00 1.08E+00 4.10E+00 WS 51 25566 09/25/95 Ru-103 -1.79E+00 1.37E+00 5.31E+00 j WS 51 25566 09/25/95 Ru-106 6.76E+00 1.14E+01 4.14E+01 WS 51 25566 09/25/95 Sb-124 1.66E+00 3.24E+00 1.21E+01 WS 51 25566 09/25/95 Se-75 -0.85E+00 1.42E+00 4.94E+00 i WS 51 25566 09/25/95 Zn-65 -

4.73E+00 2.84E+00 1.18E+01 WS 51 25566 09/25/95 Zr-95 2.70E+00 2.31E+00 7.61E+00 WS 51 26211 10/23/95 AcTh228 -

4.48E+00 3.17E+00 1.18E+01 WS 51 26211 10/23/95 Ag-110M -

0.65E+00 1.14E+00 4.13E+00 WS 51 26211 10/23/95 Ba-140 - 1.62E+00 1.55E+00 6.11E+00 l

WS 51 26211 10/23/95 Be-7 5.75E+00 7.23E+00 2.45E+01 WS 51 26211 10/23/95 Co-141 - 0.39E+00 1.35E+00 4.40E+00

, WS 51 26211 10/23/95 Co-144 6.67E+00 4.96E+00 1.57E+01 WS 51 26211 10/23/95 Co-57 0.31E+00 0.61E+00 1.97E+00 l WS 51 26211 10/23/95 Co-58 -

0.79E+00 0.75E+00 2.73E+00 l WS 51 26211 10/23/95 Co-60 -

0.39E+00 0.86E+00 3.29E+00

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

.__ _ _ . _ _ . _ . . _ _ . . _ _ . _ . ~ . _ . _ _ _ _ .- _ _ _ . . . _ __, . .__

Pilgrim Nuclear Power Station Radiological Environmental Monitoring System Summary of First Quarter 1993 Data SAMPLE CONC.' STD DEV. MDC i

_S!___'Ie______E*"___""E_Se?"_"??!!!'______!!?!!!!!____!!S!!!!!___!!S!!!!!__ l MS 51 26211 10/23/95 Cr-51 -0.47E+00 8.19E+00 2.83E+01 ,

W8 51 26211 10/23/95 Co-134 -1.11E+00 1.52E+00 4.74B+00 I WS 51 .26211 10/23/95 Cs-137 -0.90E+00 0.77E+00 2.96E+00 WS 51 26211 10/23/95 Fe-59 3.165+00 2.76E+00 9.54E+00 WS 51 26211 10/23/95 I-131 -1.88E+00 2.23E+00 7.93E+00 WS 51 26211 10/23/95. K-40 2.77E+02 2.22E+01 4.93E+01

WS 51 26211 10/23/95 Mn-54 -0.74E+00 0.73E+00 2.62E+00 WS 51 26211 10/23/95 Ru-103 -2.15E+00 0.90E+00 3.41E+00 WS 51 26211 10/23/95 Ru-106 -1.41E+01 7.35E+00 2.86E+01 WS 51_ 26211 10/23/95 8b-124 3.37E+00 2.19E+00 7.21E+00 WS 51 26211 10/23/95- 8e-75 -2.60E-02 0.91E+00 3.00E+00 W8 51 26211 10/23/95 En-65 -4.87E+00 2.04E+00 7.90E+00 WS 51 26211 10/23/95 Er-95 -0.314+00 1.39E+00 4.84E+00

'W8 51 27209 ~12/26/95 AcTh228 0.00E+00 3.53E+00 1.26E+01 W8 -

51 27209 12/26/95 .Ag-110M -0.14E+00 1.24E+00 4.47E+00 WS 51 27209 12/26/95 Ba-140 0.97E+00 2.13E+00 7.63E+00 W8 .51 27209 12/26/95 Be-7 -4.03E+00 7.30E+00 2.65E+01 WS 51 27209 12/26/95 Co-141 0.52E+00 1.60E+00 5.19E+00 W8 51 27209 12/26/95 Co-144 -1.29E+00 5.32E+00 1.74E+01 W8 51 27209 12/26/95 Co-57 0.36E+00 0.66E+00 2.13E+00 WS 51 27209 12/26/95 Co-58 -1.25E+00 0.875+00 3.26E+00 ;

W8 51 27209 12/26/95 Co-60 0.83E+00 1.02E+00 3.63E+00 ;

W8 51 27209 12/26/95 Cr-51 -6.25E+00 9.59E+00 3.39E+01 i

- WS 51 27209 12/26/95 Cs-134 0.67E+00 1.49E+00 4.48E+00 51 27209 12/26/95 Cs-137 0.32E+00 0.88E+00 3.17E+00

W8 WS 51 27209 12/26/95 Fe-59 -1.66E+00 2.95E+00 1.14E+01 WS 51 27209 12/26/95 I-131 0.43E+00 3.04E+00 1.05E+01

! WS 51 27209 12/26/95 K-40 2.30E+02 2.34E+01 5.54E+01

WS 51 27209 12/26/95 Mn-54 -1.71E+00 0.78E+00 3.05E+00 W8 51 27209 12/26/95 Ru-103 0.00E+00 '1.06E+00 3.73E+00

{ W8 51 27209 12/26/95 Ru-106 1.49E+00 7.75E+00 2.82E+01

- W8 51 27209 12/26/95 8b-124 -3.93E+00 2.36E+00 9.83E+00 W8 51 27209 12/26/95 So-75 -1.02E+00 1.01E&OO 3.46E+00 i W8 51 27209 12/26/95 En-65 -1.18E+00 1.75E+00 6.64E+00 4 WS 51 27209 12/26/95 Er-95 0.78E+00 1.67E+00 5.66E+00 l

5 i

i l

f

{

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i i

< < ..-..-~.3 -- , , -, . ., . _ _ _ _ _ . _ _ _ _ _ _

Seabrook Station Radiological Environmental (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/kg) (pCi/kg) (pCi/kg) l 1

l I

Seawater - Quarterly Composites 1

WS 01 22286 03/20/95 H-3 4.02E+01 2.13E+02 6.92E+02 I WS 51 22287 03/20/95 H-3 -6.26E+01 2.07E+02 6.89E+02 l WS 01 24532 06/19/95 H-3 2.69E+02 2.27E+02 7.03E+02 WS 51 24533 06/19/95 H-3 -1.97E+00 2.16E+02 7.11E+02 WS 01 25986 09/25/95 H-3 1.33E+02 2.49E+02 8.01E+02 WS 51 25987 09/25/95 H-3 2.17E+02 2.59E+02 8.22E+02 WS 01 27456 12/26/95 H-3 1.12E+02 2.06E+02 6.62E+02 WS 51 27457 12/26/95 H-3 -8.92E+01 1.86E+02 6.23E+02 l

l l

l 4

1 l

i l

l l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

, 1 Seabrook Station Radiological Environmental Data (January - December 1995)

' SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m) l

..-..._-.___._______.---___---.________.------....--__--- j

)

Air Particulates - Quarterly Composites AP 01 22541 03/29/95 AcTh228 ~6.83E-04 6.44E-04 2.62E-03 AP 01 22541 03/29/95 Ag-110M -2.46E-04 2.41E-04 1.01E-03 AP 01 22541 03/29/95 Ba-140 -2.87E-03 2.48E-03 1.14E-02 AP 01 22541 03/29/95 Be-7 8.46E-02 6.06E-03 1.17E-02

AP 01 22541 03/29/95 Co-141 5.31E-04 3.71E-04 1.18E-03 AP 01 22541 03/29/95 Co-144 -1.28E-04 5.63E-04 1.93E-03 AP 01 22541 03/29/95 Co-57 -1.25E-04 6.97E-05 2.55E-04 AP 01 22541 03/29/95 Co-58 2.56E-05 2.30E-04 8.59E-04 AP 01 22541 03/29/95 Co-60 -9.00E-05 1.85E-04 7.95E-04 AP 01 22541 03/29/95 Cr-51 8.87E-04 4.02E-03 1.43E-02 AP 01 22541 03/29/95 Cs-134 -8.37E-05 1.47E-04 5.85E-04 AP 01 22541 03/29/95 Cs-137 -6.87E-05 1.59E-04 6.34E-04 i AP 01 22541 03/29/95 Fe-59 -2.20E-03 1.18E-03 5.47E-03

! AP 01 22541 03/29/95 I-131 -2.42E-03 4.61E-03 1.73E-02 AP 01 22541 03/29/95 K-40 6.29E-03 2.88E-03 8.87E-03 AP 01 22541 03/29/95 Mn-54 4.54E-04 1.74E-04 4.81E-04 AP 01 22541 03/29/95 Ru-103 4.23E-04 3.26E-04 1.10E 03 4

AP 01 22541 03/29/95 Ru-106 -6.97E-05 1.35E-03 5.29E-33 AP 01 22541 03/29/95 Sb-124 2.47E-04 9.55E-04 3.70E-03 AP 01 22541 03/29/95 Se-75 -1.98E-04 1.78E-04 6.52E-04 AP 01 22541 03/29/95 Zn-65 2.76E-04 3.56E-04 1.30E-03 AP 01 22541 03/29/95 Zr-95 2.27E-05 3.70E-04 1.41E-03 AP 01 24480 06/28/95 AcTh228 1.40E-03 8.21E-04 2.65E-03 AP 01 24480 06/28/95 Ag-110M 3.85E-04 3.74E-04 1.29E-03 AP 01 24480 06/28/95 Ba-140 1.13E-03 2.03E-03 8.14E-03

AP 01 24480 06/28/95 Be-7 0.10E+00 7.75E-03 1.31E-02 *

~

AP 01 24480 06/28/95 Ce-141 2.21E-04 5.40E-04 1.81E-03 ,

AP 01 24480 06/28/95 Co-144 2.22E-03 7.98E-04 2.35E-03 1 AP 01 24480 06/28/95 Co-57 -2.44E-05 9.46E-05 3.27E-04 AP 01 24480 06/28/95 Co-58 1.91E-04 2.51E-04 8.93E-04 l AP 01 24480 06/28/95 Co-60 1.80E-04 2.01E-04 7.43E-04 AP 01 24480 06/28/95 Cr-51 -3.77E-03 4.86E-03 1.85E-02 AP 01 24480 06/28/95 Cs-134 2.53E-04 1.89E-04 6.55E-04 j

AP 01 24480 06/28/95 Ca-137 4.57E-05 1.73E-04 6.29E-04 AP 01 24480 06/28/95 Fe-59 1.05E-03 1.32E-03 4.88E-03 AP 01 24480 06/28/95 I-131 -2.78E-03 7.13E-03 2.65E-02 AP 01 24480 06/28/95 K-40 3.56E-03 3.53E-03 1.28E-02 AP 01 24480 06/28/95 Mn-54 -2.49E-04 2.32E-04 9.50E-04 AP 01 24480 06/28/95 Ru-103 2.63E-04 5.29E-04 1.94E-03 AP 01 24480 06/28/95 Ru-106 7.13E-04 1.68E-03 6.35E-03 AP 01 24480 06/28/95 Sb-124 -7.75E-04 9.56E-04 4.26E-03 AP 01 24480 06/28/95 Se-75 6.22E-05 2.61E-04 9.28E-04 i AP 01 24480 06/28/95 Zn-65 -3.46E-04 4.47E-04 1.92E-03 AP 01 24480 06/28/95 Zr-95 -2.07E-04 5.33E-04 2.09E-03 l AP 01 25960 09/27/95 AcTh228 2.34E-05 9.51E-04 3.81E-03 AP 01 25960 09/27/95 Ag-110M 4.36E-04 3.61E-04 1.22E-03 :

AP 01 25960 09/27/95 Ba-140 4.67E-04 4.44E-03 2.01E-02 l AP 01 25960 09/27/95 Be-7 0.11E+00 1.16E-02 2.39E-02

AP 01 25960 09/27/95 Ce-141 -7.08E-04 7.95E-04 2.92E-03 AP 01 25960 09/27/95 Co-144 -1.96E-03 9.64E-04 3.81E-03 AP 01 25960 09/27/95 Co-57 -1.74E-04 1.24E-04 4.71E-04

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1 i

l

\

- - _ ~ . - - - -.. . . . -- - - . -- . - - - . . . . - - . _ - -

l l

i Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC j TYPE STA. LSN END DATE NUCLIDE (pCL/cu.m) (pci/cu.m) (pC1/cu.m) l AP 01 25960 09/27/95 Co-58 1.66E-05 5.13E-04 1.98E-03 AP 01 25960 09/27/95 Co-60 -2.86E-04 3.43E-04 1.60E-03 AP 01 25960 09/27/95 Cr-51 -1.26E-03 6.99E-03 2.68E-02 I AF 01 25960 09/27/95 Cs-134 -2.79E-04 2.55E-04 1.09E-03 AP 01 25960 09/27/95 Cs-137 6.59E-04 2.31E-04 5.16E-04

} 6.08E-03 i AP 01 25960 09/27/95 Fe-59 1.67E-03 1.67E-03 AP 01 25960 09/27/95 I-131 1.00E-02 1.24E-02 4.40E-02 AP 01 25960 09/27/95 K-40 -1.19E-03 3.15E-03 1.43E-02 AP 01 25960 09/27/95 Mn-54 -2.49E-04 2.64E-04 1.18E-03 6.44E-04 2.28E-03 AP 01 25960 09/27/95 Ru-103 5.76E-04 t AP 01 25960 09/27/95 Ru-106 2.035-03 2.24E-03 8.28E-03 AP 01 25960 09/27/95 Sb-124 7.71E-04 1.38E-03 5.54E-03 AP 01 25960 09/27/95 Se-75 -4.17E-04 3.08E-04 1.22E-03 4 AP 01 25960 09/27/95 En-65 4.60E-04 7.97E-04 3.02E-03 AP 01 25960 09/27/95 Er-95 -1.315-03 9.87E-04 4.51E-03 AP 01 27442 12/26/95 AcTh228- -1.04E-04 9.60E-04 3.65E-03 i AP 01 27442 12/26/95 Ag-110M -1.77E-04 2.95E-04 1.26E-03 AP 01 27442 12/26/95 Ba-140 -3.51E-10 2.87E-03 1.32E-02

AP 01 27442 12/26/95 Be-7 5.55E-02 7.40E-03 1.77E-02

AP 01 27442 12/26/95 Co-141 -5.40E-04 5.15E-04 1.81E-03 l AP 01 27442 12/26/95 Co-144 -1.59E-03 7.51E-04 2.77E-03 4

AP 01 27442 12/26/95 Co-57 9.01E-06 1.04E-04 3.38E-04 i AP 01 27442 12/26/95 Co-SS -4.60E-04 4.63E-04 1.98E-03 AP 01 27442 12/26/95 Co-60 -2.46E-04 3.11E-04 1.39E-03 AP 01 27442 12/26/95 Cr-51 -9.59E-03 5.96E-03 2.30E-02 AP 01 27442 12/26/95 Co-134 3.54E-04 2.58E-04 8.62E-04

AP 01 27442 12/26/95 Cs-137 -1.04E-04 2.10E-04 8.55E-04

, AP 01 27442 12/26/95 Fe-59 2.28E-03 1.48E-03 4.85E-03 AP 01 27442 12/26/95 I-131 -1.01E-02 7.46E-03 3.00E-02 AP 01 27442 12/26/95 K-40 -1.34E-03 3.68E-03 1.48E-02

AP 01 27442 12/26/95 Mn-54 2.77E-04 2.23E-04 7.40E-04 l AP 01 27442 12/26/95 Ru-103 9.04E-05 5.64E-04 2.10E-03

AP 01 27442 12/26/95 Ru-106 4.98E-03 1.94E-03 5.37E-03 AP 01 27442 12/26/95 Sb-124 -2.10E-10 1.25E-03 5.30E-03 AP 01 27442 12/26/95 se-75 -3.23E-04 2.72E-04 1.02E-03 i AP 01 27442 12/26/95 En-65 -9.68E-04 6.45E-04 2.93E-03 AP 01 27442 12/26/95 Er-95 -1.86E-03 8.05E-04 3.78E-03 l

AP 02 22542 03/29/95 AcTh228 1.53E-03 6.30E-04 1.80E-03 AP 02 22542 03/29/95 Ag-110M ~1.51E-05 2.58E-04 1.02E-03 l AP 02 22542 03/29/95 Ba-140 3.57E-04 2.15E-03 8.63E-03 1 AP 02 22542 03/29/95 Be-7 7.65E-02 6.58E-03 1.35E-02

AP O2 22542 03/29/95 Co-141 4.49E-04 4.69E-04 1.53E-03 AP 02 22542 03/29/95 Co-144 -7.37E-04 6.84E-04 2.47E-03 AP O2 22542 03/29/95 Co-57 -9.53E-06 8.78E-05 3.02E-04 AP 02 22542 03/29/95 Co-58 -9.10E-05 2.59E-04 1.02E-03

AP 02 22542 03/29/95 Co-60 6.35E-05 2.39E-04 9.35E-04 AP 02 22542 03/29/95 Cr-51 3.77E-03 4.66E-03 1.61E-02 AP 02 22542 03/29/95 Cs-134 1.02E-04 2.05E-04 7.50E-04 AP 02 22542 03/29/95 Co-137 -2.19E-04 1.64E-04 6.75E-04 AP 02 22542 03/29/95 Fe-59 1.08E-03 9.78E-04 3.51E-03 AP 02 22542 03/29/95 I-131 -3.68E-03 4.51E-03 1.73E-02 AP 02 22542 03/29/95 K-40 5.66E-03 3.43E-03 1.13E-02 AP 02 22542 03/29/95 Mn-54 3.47E-04 1.77E-04 5.41E-04

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1

.%- _ _m . - . . , , _ . , . .._.3 - , , , . , . . ~ , , , . , - , . , --- - - . . - - ,

--- - . - . _ --. _. . . - - . ~ _ . -- --

Seabrook Station Radiological Environmental Data (January - December 1995) 8 AMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pC1/cu.m)

AP 02 22542 03/29/95 Ru-103 3.50E-04 3.38E-04 1.21E-03 AP 02 22542 03/29/95 Ru-106 -2.28E-04 1.96E-03 7.55E-03 AP 02 22542 03/29/95 sb-124 -9.21E-05 9.45E-04 3.82E-03 AP 02 22542 03/29/95 So-75 -1.935-04 2.63E-04 9.72E-04 AP 02 22542 03/29/95 En-65 1.72E-04 3.51E-04 1.36E-03 AP 02 22542 03/29/95 Er-95 -2.70E-04 4.47E-04 1.81E-03 AP 02 24481 06/28/95 AcTh228 6.53E-04 8.32E-04 2.96E-03 AP 02 24481 06/28/95 Ag-110M 1.36E-04 2.72E-04 1.03E-03 AP 02 24481 06/28/95 Ba-140 -1.33E-03 1.99E-03 1.07E-02 AP 02 24481 06/28/95 Be-7 9.30E-02 7.38M-03 1.31E-02

AP 02 24481 06/28/95 Co-141 -2.12E-04 5.23E-04 1.83E-03 AP 02 24481 06/28/95 Co-144 8.70E-04 6.86E-04 2.20E-03 AP 02 24481 06/28/95 Co-57 -1.74E-04 7.78E-05 3.02E-04 AP 02 24481 06/28/95 Co-58 -4.46E-04 2.65E-04 1.22E-03

> AP 02 24481 06/28/95 Co-60 -1.29E-04 2.66E-04 1.14E-03

AP O2 24482 06/28/95 Cr-51 2.97E-03 4.91E-03 1.73E-02

> AP C2 24481 06/28/95 Co-134 -8.56E-05 1.97E-04 7.84E-04 AP ')2 24481 06/28/95 Cs-137 1.42E-04 2.11E-04 7.77E-04

.\P 02 24481 C6/28/95 Fe-59 -2.18E-03 1.59E-03 7.27E-03 i i AP OL 24481 06/28/95 I-131 3.77E-03 6.53E-03 2.32E-02 l 1 AP O2 24481 06/38/95 K-40 -2.56E-03 2.89E-03 1.23M-02 l AP C1 24481 06/18/95 Mn-54 2.393-05 2.14E-04 8.02E-04 l AP JJ 24481 C6/29/95 Ru- 103 6.22E-04 3.97E-04 1.30E-03 i AP 02 24481 06/28/95 nu-106 1.17E-04 1.77E-03 6.96E-03 AP 02 2448J 06/28/95 Sb-124 -1.44E-03 1.02E-03 5.07E-03 l

) 2.13E-04 7.67E-04 1 AP 02 24481 06/28/95 so-75 -7.68E-05

?

AP 02 24481 06/28/95 En-65 -1.45E-03 5.76E-04 2.74E-03 AP 02 24481 06/28/95 Er-95 8.26E-04 4.08E-04 1.12E-03

! AP 02 25961 09/27/95 AcTh228 5.50E-04 1.12E-03 4.12E-03 AP 02 25961 09/27/95 Ag-110M 0.00E+00 3.87E-04 1.55E-03 AP 02 25961 09/27/95 Ba-140 7.40E-04 4.28E-03 1.82E-02 AP 02 25961 09/27/95 Be-7 0.11E+00 1.07E-02 2.19E-02

AP 02 25961 09/27/95 Co-141 -1.23E-03 7.53E-04 2.86E-03 AP 02 25961 09/27/95 Ce-144 2.39E-03 1.10E-03 3.34E-03 l AP 02 25961 09/27/95 Co-57 1.94E-04 1.14E-04 3.54E-04 AP 02 25961 09/27/95 Co-58 -2.61E-04 4.78E-04 1.91E-03 AP 02 25961 09/27/95 Co-60 2.25E-04 3.59E-04 1.37E-03 4 AP 02 25961 09/27/95 Cr-51 2.20E-03 6.97E-03 2.53E-02 1 AP 02 25961 09/27/95 Cs-134 -6.29E-04 6.79E-04 2.62E-03 AP 02 25961 09/27/95 Cs-137 2.52E-04 2.38E-04 8.05E-04 AP 02 25961 09/27/95 Fe-59 -2.40E-03 2.36E-03 1.05E-02 AP 02 25961 09/27/95 I-131 -3.52E-02 1.50E-02 6.23E-02 AP 02 25961 09/27/95 K-40 1.42E-03 4.55E-03 1.72E-02 AP 02 25961 09/27/95 Mn-54 -4.10E-04 3.35E-04 1.42E-03

AP 02 25961 09/27/95 Ru-103 -6.13E-04 6.17E-04 2.64E-03 AP 02 25961 09/27/95 Ru-106 1.28E-03 2.57E-03 9.73E-03

.l. AP 02 25961 09/27/95 Sb-124 -5.07E-04 1.10E-03 5.25E-03 AP 02 25961 09/27/95 Se-75 -4.83E-05 3.52E-04 1.30E-03 AP 02 25961 09/27/95 En-65 8.66E-04 1.54E-03 6.08E-03 AP. 02 25961 09/27/95 Er-95 -1.85E-04 7.84E-04 3.10E-03 4 AP 02 27443 12/26/95 AcTh228 -3.65E-04 8.45E-04 3.37E-03 AP 02 27443 12/26/95 Ag-110M 2.60E-04 3.48E-04 1.23E-03

Radioactivity detected (i.e. , Concentration is > 3 Std. Devia tions) .

I f

i 1

i

! Seabrook Station Radiological Environmental Data

- (January - December 1995) j SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/cu.m) (pci/cu.m) (pci/cu.m)

AP '02 27443 12/26/95 Ba-140 -5.30E-03 4.40E-03 2.07E-02 AP 02 27443 12/26/95 Be-7 7.575-02 7.88E-03 1.62E-02

1.76E-03 AP 02 27443 12/26/95 Co-141 -6.49E-04 4.89E-04 AP 02 27443 12/26/95 Co-144 -3.56E-04 7.14E-04 2.43E-03 3.31E-04 AP 02 27443 12/26/95 Co-57 -1.26E-04 9.35E-05 l

AP 02 27443 12/26/95 Co-58 3.35E-05 3.94E-04 1.58E-03 AP 02 27443 12/26/95 Co-60 2.14E-04 2.55E-04 9.61E-04

5.63E-03 1.81E-02 AP 02 27443 12/26/95 Cr-51 7.50E-03 j AP 02 27443 12/26/95 Cs-134 -7.71E-05 1.89E-04 7.51E-04 2 AP 02 27443 12/26/95 Co-137 -1.83E-04 2.15E-04 8.91E-04 AP 02 27443 12/26/95 Fe-59 -4.56E-03 1.96E-03 9.56E-03 AP 02 27443 12/26/95 I-131 -3.34E-03 9.11E-03 3.33E-02 AP 02 27443 12/26/95 K-40 -5.42E-03 3.10E-03 1.44E-02 1 AP 02 27443 12/26/95 Kn-54 8.44E-05 2.51E-04 9.22E-04 AP 02 ,27443 12/26/95 Ru-103 2.94E-04 4.83E-04 1.75E-03 AP 02 27443 12/26/95 Ru-106 -4.21E-04 2.19E-03 8.475-03

AP -02 27443 12/26/95 Sb-124 3.035-04 7.875-04 3.47E-03 j AP 02 27443 12/26/95 so-75 -2.05E-04 2.74E-04 1.00E-03 j AP 02 27443 12/26/95 En-65 -6.32E-04 5.91E-04 2.63E-03 AP 02 27443 12/26/95 Er-95 2.69E-04 7.54E-04 2.91E-03 j

AP 03 22543 03/29/95 AcTh228 3.64E-04 6.91E-04 2.47E-03 AP 03 22543 03/29/95 Ag-110M 2.34E-04 2.61E-04 9.13E-04 , ;

AP 03 22543 03/29/95 Ba-140 1.72E-03 1.93E-03 6.93E-03 l AP 03 22543 03/29/95 Be-7 0.10E+00 6.90E-03 1.34E-02

l AP 03 22543 03/23/95 Co-141 7.22E-04 4.02E-04 1.25E-03 l AP 03 22543 03/29/95 Co-144 -9.67E-05 6.84E-04 2.32E-03 I

' AP 03 22543 03/29/95 Co-57 2.38E-05 8.01E-05 2.67E-04 j AP 03 22543 03/29/95 Co-58 4.20E-05 2.42E-04 8.87E-04 AP 03 22543 03/29/95 Co-60 5.44E-06 1.79E-04 7.20E-04 1.48E-02

AP 03 22543 03/29/95 Cr-51 5.79E-03 4.43E-03 i AP 03 22543 03/29/95 Cs-134 -1.72E-04 1.77E-04 6.95E-04 i AP 03 22543 03/29/95 Cs-137 2.32E-04 1.54E-04 4.95E-04 l l AP 03 22543 03/29/95 Fe-59 5.19E-04 7.69E-04 2.96E-03 l j AP 03 22543 03/29/95 I-131 -1.21E-03 4.85E-03 1.78E-02 AP 03 22543 03/29/95 K-40 1.74E-03 3.03E-03 1.10E-02 i AP 03 22543 03/29/95 Mn-54 0.00E+00 1.24E-04 4.93E-04 l AP 03 22543 03/29/95 Ru-103 3.27E-05 3.44E-04 1.31E-03

' AP 03 22543 03/29/95 Ru-106 -2.33E-04 1.56E-03 6.00E-03

, AP 03 22543 03/29/95 Sb-124 5.77E-04 7.26E-04 2.62E-03 AP 03 22543 03/29/95 Se-75 8.62E-05 2.13E-04 7.46E-04 AP 03 22543 03/29/95 En-65 -5.06E-04 4.30E-04 1.80E-03 1.42E-03 AP 03 22543 03/29/95 Er-95 -6.43E-06 3.72E-04 AP 03 24482 06/26/95 AcTh228 1.73E-04 7.54E-04 2.88E-03 AP 03 24482 06/28/95 Ag-110M -6.71E-04 3.14E-04 1.48E-03 i

AP 03 24482 06/28/95 Ba-140 -1.47E-03 3.13E-03 1.43E-02 AP 03 24482 06/28/95 Be-7 0.11E+00 8 45E-03 1.62E-02 *

AP 03 24482 06/28/95 Co-141 1.69E-03 6. 6E-04 1.85E-03 AV 03 24482 06/28/95 Co-144 3.97E-04 8.22E-04 2.74E-03 AP 03 24482 06/28/95 Co-57 -1.39E-04 1.01E-04 3.66E-04

. A9 03 24482 06/28/95 Co-58 1.48E-04 2.89E-04 1.06E-03

AP 03 24482 06/28/95 Co-60 -6.64E-05 2.69E-04 1.14E-03

! AP 03 24482 06/28/95 Cr-51 9.96E-03 5.87E-03 1.91E-02

, AU 03 24482 06/28/95 Cs-134 -1.72E-05 2.10E-04 8.14E-04 I

Radioactivity detected (i.e., Cencontration is > 3 Std. Deviations).

P

l 1

1 Seabrook Station Radiological Environmental Data (January - December 1995) l SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/cu.m) (pci/cu.m) (pci/cu.m)

AP 03 24482 06/28/95 Cs-137 -2.72E-05 2.11E-04 8.40E-04 l AP 03 24482 06/28/95 Fe-59 1.83E-03 1.53E-03 5.36E-03 AP 03 24482 06/28/95 I-131 1.14E-02 6.93E-03 2.26E-02 AP 03 24482 06/28/95 K-40 2.19E-03 3.72E-03 1.38E-02 AP 03 24482 06/28/95 Mn-54 -3.23E-04 1.96E-04 8.81E-04 AP 03 24482 06/28/95 Ru-103 -5.79E-04 4.64E-04 1.92E-03 AP 03 24482 06/28/95 Ru-106 -2.78E-OL 2.34E-03 9.72E-03 AP 03 24482 06/28/95 Sb-124 7.52E-00 1.30E-03 4.93E-03 AP 03 24482 06/28/95 Se-75 2.44E-04 2.28E-04 7.47E-04 AP 03 24482 06/28/95 Zn-65 2.79E-04 4.42E-04 1.68E-03 AP 03 24482 06/28/95 Zr-95 8.26E-04 5.86E-04 1.90E-03 AP 03 25962 09/27/95 AcTh228 2.20E-03 1.21E-03 4.03E-03 AP 03 25962 09/27/95 Ag-110M 1.85E-04 3.66E-04 1.41E-03 AP 03 25962 09/27/95 Ba-140 4.26E-03 5.21E-03 1.98E-02 ,

AP 03 25962 09/27/95 Be-7 0.14E+00 1.21E-02 2.31E-02 * <

AP 03 25962 09/27/95 Co-141 2.96E-04 6.64E-04 2.27E-03 AP 03 25962 09/27/95 Co-144 -2.28E-04 1.06E-03 3.70E-03 1 AP 03 25962 09/27/95 Co-57 -1.24E-04 1.21E-04 4.45E-04 j AP 03 25962 09/27/95 Co-58 2.70E-04 4.63E-04 1.68E-03 1 AP 03 25962 09/27/95 Co-60 3.56E-04 4.49E-04 1.66E-03 !

AP 03 25962 09/27/95 Cr-51 1.13E-03 7.73E-03 2.82E-02 l AP 03 25962 09/27/95 Cs-134 -1.44E-03 8.64E-04 3.18E-03 AP 03 25962 09/27/95 Cs-137 4.85E-04 2.71E-04 8.82E-04 AP 03 25962 09/27/95 Fe-59 1.75E-03 1.75E-03 6.44E-03 AP 03 25962 09/27/95 I-131 1.28E-02 1.28E-02 4.42E-02 AP 03 25962 09/27/95 K-40 8.30E-03 4.78E-03 1.49E-02 AP 03 25962 09/27/95 Mn-54 -9.35E-06 2.52E-04 1.01E-03 AP 03 25962 09/27/95 Ru-103 7.76E-04 5.49E-04 1.82E-03 l AP 03 25962 09/27/95 Ru-106 -1.7.8E-03 2.32E-03 9.91E-03 AP 03 25962 09/27/95 Sb-124 -5.25E-04 1.29E-03 6.20E-03 l AP 03 25962 09/27/95 Se-75 o.75E-04 3.60E-04 1.11E-03 l AP 03 25962 09/27/95 Zn-65 9.61E-04 1.60E-03 6.04E-03 l AP 03 25962 09/27/95 Zr-95 1.26E-03 8.92E-04 2.88E-03 l AP 03 27444 12/26/95 AcTh228 7.07E-04 9.36E-04 3.31E-03 AP 03 27444 12/16/95 Ag-110M 0.00E+00 3.38E-04 1.33E-03 AP 03 27444 12/26/95 Ba-140 1.25E-03 3.49E-03 1.45E-02 AP 03 27444 12/26/95 Be-7 6.64E-02 8.47E-C3, 2.00E-02

AP 03 27444 12/26/95 Co-141 -6.46E-04 6.05E-Oo 2.10E-03

P 03 27444 12/26/95 Co-144 -3.49E-05 7.545-04 2.51E-03 AP 03 27444 12/26/95 Co-57 -1.49:1-04 9.69F-05 3.49E-04 AP 03 27444 12/26/95 Co-58 8.10E-04 4.17E-04 1.32E-03 AP 03 27444 12/26/95 Co-60 -9.89E-05 3.97E-04 1.62E-03 AP 03 27444 12/26/95 Cr-51 -1.86E-03 4.98E-03 1.86E-02 AP 03 27444 12/26/95 Cs-134 4.15E-05 2.31E-04 8.61E-04 AP 03 27444 12/26/95 Cs-137 9.86E-05 2.09E-04 7.82E-04 A? 03 27444 12/26/95 Fe-59 1.08E-03 2.20E-03 8. 3 9E- 03 AP 03 27444 12/26/95 I-131 -1.25E-03 7.98E-03 2.95E-02 AP 03 27444 12/26/95 K-40 6.37E-03 4.39E-03 1.45E-02 AP 03 27444 12/26/95 Mn-54 1.31E-04 2.53E-04 9.19E-04 AP 03 27444 12/26/95 Ru-103 3.38E-04 6.79E-04 2.43E-03 AP 03 27444 12/26/95 Ru-106 4.54E-04 1.87E-03 7.20E-03 AP 03 27444 12/26/95 Sb-124 -9.32E-04 1.47E-03 6.57E-03 AP 03 27444 12/26/95 Se-75 7.57E-04 2.90E-04 8.34E-04

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/cu.m) (pC1/cu.m) (pC1/cu.m)

AP 03 27444 12/26/95 En-65 3.40E-04 6.81E-04 2.56E-03 AP 03 27444 12/26/95 Ir-95 -1.59E-04 7.43E-04 3.07E-03 AP 04 22544 03/29/95 AcTh228 3.36E-04 6.19E-04 2.235-03 AP 04 22544 03/29/95 Ag-110M -3.195-04 2.40E-04 1.01E-03 AP 04 22544 03/29/95 Ba-140 -1.87E-03 2.85E-03 1.18E-02 AP 04 22544 03/29/95 Be-7 U.10E+00 6.30E-03 1.16E-02

AP 04 22544 03/29/95 Co-141 1.99E-04 3.57E-04 1.19E-03 AP 04 22544 03/29/95 Co-144 4.54E-04 5.44E-04 1.91E-03 AP 04 22544 03/29/95 Co-57 6.82E-05 7.38E-05 2.39E-04 AP 04 22544 03/29/95 Co-58 3.97E 2.16E-04 6.57E-04 AP 04 22544 03/29/95 Co-60 -3.84E-05 1.86E-04 7.65E-04 AP 04 22544 03/29/95 Cr-51 4.41E-03 3.99E-03 1.35E-02 AP 04 22544 03/29/95 Cs-134 -1.21E-04 1.50E-04 5.97E-04 AP 04 22544 03/29/95 Cs-137 5.61E-05 1.35E-04 5.10E-04 AP 04 22544 03/29/95 Fe-59 6.92E-04 1.09E-03 4.06E-03 AP 04 22544 03/29/95 I-131 2.86E-03 4.62E-03 1.61E-02 AP 04 22544 03/29/95 K-40 -3.01E-03 2.79E-02 1.10E-02 AP 04 22544 03/29/95 Kn-54 1.53E-05 1.38E-04 5.15E-04 AP 04 22544 03/29/95 Ru-103 9.88E-05 3.35E-04 1.21E-03

'AP 04 22544 03/29/95 Ru-106 6.53E-04 1.54E-03 5.72E-03 AP 04 22544 03/29/95 Sb-124 1.38E-03 7.06E-04 2.04E-03 AP 04 22544 03/29/95 Se-75 -1.53E-04 1.87E-04 6.65E-04 AP 04 22544 03/29/95 En-65 -9.38E-05 3.69E-04 1.48E-03 AP 04 22544 03/29/95 Er-95 2.10E-04 3.96E-04 1.41E-03 AP 04 24483 06/28/95 AcTh228 -1.15E-03 1.02E-03 4.10E-03 AP 04 24483 06/28/95 Ag-110M -3.18E-04 3.01E-04 1.32E-03 AP 04 24483 06/28/95 Ba-140 -3.07E-10 2.51E-03 1.15E-02 AP 04 24483 06/28/95 Be-7 0.10E+00 8.68E-03 1.78E-02

AP 04 24483 06/28/95 Co-141 -1.08E-04 5.26E-04 1.85E-03 AP 04 24483 06/28/95 Co-144 3.17E-04 8.22E-04 2.77E-03 AP 04 24483 06/28/95 Co-57 4.79E-05 1.02E-04 3.43E-04 AP 04 24483 06/28/95 Co-58 6.66E-04 3.02E-04 8.16E-04 AP 04 24483 06/28/95 Co-60 4.09E-04 2.65E-04 8.54E-04 l, AP 04 24483 06/28/95 Cr-51 3.88E-03 5.65E-03 1.98E-02 l- AP 04 24483 06/28/95 Co-134 7.54E-05 2.13E-04 7.82E-04

, AP 04 24483 06/28/95 Cs-137 -1.42E-04 2.44E-04 9.99E-04 AP 04 24483 06/28/95 Fe-59 -9.01E-04 1.42E-03 6.35E-03 AP 04 24483 06/28/95 I-131 -5.75E-03 7.19E-03 2.82E-02 AP 04 24483 06/28/95 K-40 4.55E-03 2.89E-03 9.51E-03 AP 04 24483 06/28/95 Mn-54 5.59E-05 2.10E-04 7.95E-04 5.17E-04 1.78E-03 AP 04 24483 06/28/95 Ru-103 5.49E-04 AP 04- 24483 06/28/95 Ru-106 -3.36E-03 2.05E-03 9.17E-03 AP 04 24483 06/28/95 sb-124 -1.00E-03 8.42E-04 4.53E-03

AP 04 24483 06/28/95 Se-75 -6.13E-05 2.34E-04 8.45E-04

AP 04 24483 06/28/95 En-65 -1.08E-03 6.74E-04 3.01E-03 AP 04 24483 06/28/95 Er-95 1.37E-03 5.22E-04 1.26E-03

, AP 04' 25963 09/27/95 AcTh228 -5.08E-04 8.79E-04 3.81E-03 AP' 04 25963 09/27/95 Ag-110M 2.03E-04 3.97E-04 1 ~^E-03 AP 04 25963 09/27/95 Ba-140 -2.10E-03 5.57E-03 1 JE-02 AP 04 25963 09/27/95 Be-7 0.11E+00 1.06E-02 2.17E-02

AP 04 25963 09/27/95 Co-141 -1.09E-03 7.18E-04 2.72E-03 i AP 04 25963 09/27/95 Co-144 2.52E-04 9.51E-04 3.27E-03

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

l i

i .

i 4

Seabrook Station Radiological Environmental Data j (January - December 1995)

SAMPLE CONC. STD DEV.- MDC

. TYPE STA. L8N END DATE NUCLIDE (pC1/cu.m) (pCi/cu.m) (pC1/cu.m)

AP 04 25963 09/27/95 Co-57 1.72E-04 1.27E-04 4.055-04 j AP 04 25963 09/27/95 Co-58 -9.02E-05 3.43E-04 1.475-03

AP 04 25963 09/27/95 Co-60 -7.98E-04 5.76E-04 2.43E-03

AP 04 25963 09/27/95 Cr-51 -1.03E-02 7.36E-03 2.98E-02

! AP 04' 25963 09/27/95 Co-134 -5.35E-04 7.15E-04 2.675-03

AP 04 25963 09/27/95 Co-137 6.98E-05 2.22E-04 8.88E-04 2 AP 04 25963 09/27/95 Fe-59 -7.91E-04 1.19E-03 6.405-03 1

AP 04 25963 09/27/95 I-131 -1.61E-02 1.18E-02 4.92E-02 AP 04 25963 09/27/95 K-40 -2.64E-03 4.01E-03 1.71E-02 l 1.215-03

! AP 04 25963 09/27/95 Mn-54 -4.87E-C4 2.52E-04 ;

i AP 04 25963 09/27/95 Ru-103 -3.93E-04 5.39E-04 2.28E-03 l

, AP 04 25963 09/27/95 Ru-106 -4.24E-03 2.46E-03 1.14E-02 1 AP 04 25963 09/27/95 Sb-124 -1.96E-03 1.34E-03 7.19E-03 1 AP. 04 25963 09/27/95 Se-75 2.415-04 3.49E-04 1.18E-03

} AP 04 25963 09/27/95 En-65 -1.04E-03 9.03E-04 3.90E-03

AP 04 25963 09/27/95 Er-95 -1.40E-03 7.80E-04 3.61E-03 1 j

i

AP 04 27445 12/26/95 AcTh228 3.05E-04 7.28E-04 2.72E-03 ,

AP 04 27445 12/26/95 Ag-110M -9.18E-05 2.63E-04 1.10E-03 l AP 04 27445 12/26/95 Ba-140 5.91E-03 4.22E-03 1.37E-02 )

l j AP 04 27445 12/26/95 Be-7 6.10E-02 7.41E-03 '1.757.-02

i 1 AP 04 27445 12/26/95 Co-141 0.00E+00 5.20E-04 1.713-03 i AP 04 27445 12/26/95 Co-144 5.49E-04 7.62E-04 2.39E-03 i

AP 04 27445 12/26/95 Co-57 1.04E-04 9.33E-05 2.86E-04 i AP 04 27445 12/26/95 Co-58 6.09E-04 3.78E-04 1.26E-03 3

AP 04 27445 12/26/95 Co-60 -1.15E-04 2.18E-04 1.018-03 )

i AP 04 27445 12/26/95 Cr-51 -4.07E-04 5.32E-03 1.89E-02 l AP 04 27445 12/26/95 Cs-134 2.91E-04 1.92E-04 6.33E-04 1

, AP 04 27445 12/26/95 Co-137 8.62E-05 1.72E-04 6.47E-04 AP 04 27445 12/26/95 Fe-59 -2.77E-05 1.83E-03 7.42E-03 AP 04 27445 12/26/95 I-131 -1.55E-03 7.72E-03 2.82E-02 1.34E-02 j AP 04 27445 12/26/95 K-40 2.32E-03 3.61E-03 AP 04 27445 12/26/95 Mn-54 -1.75E-04 2.39E-04 9.66E-04 AP 04 27445 12/26/95 Ru-103 5.30E-04 4.65E-04 1.59E-03 i AP 04 27445 12/26/95 Ru-106 -7.94E-04 1.49E-03 6.30E-03 AP 04 27445 12/26/95 sb-124 0.00E+00 8.15E-04 3.79E-03 AP 04 27445 12/26/95 Se-75 1.17E-04 2.54E-04 8.65E-04 AP ,04 27445 12/26/95 En-65 -1.49E-04 5.76E-04 2.36E-03 AP 04 27445 12/26/95 Er-95 1.52E-04 6.10E-04 2.43E-03 AP 05 22545 03/29/95 AcTh228 -4.94E-04 1.10E-03 4.48E-03

AP 05 22545 03/29/95 Ag-110M 9.80E-04 5.87E-04 1.90E-03

} AP 05 22545 03/29/95 Ba-140 -7.76E-04 5.81E-03 2.33E-02 j AP 05 22545 03/29/95 Be-7 8.21E-02 9.44E-03 2.23E-02 *

! AP 05 22545 03/29/95 Ce-141 2.62E-04 1.06E-03 3.69E-03 AP 05 22545 03/29/95 Co-144 -1.89E-03 1.56E-03 5.77E-03 AP 05 22545 03/29/95 Co-57 -2.67E-04 2.02E-04 7.50E-04 AP 05 22545 03/29/95 Co-58 -8.34E-05 5.18E-04 2.00E-03

! AP 05 22545 03/29/95 Co-60 -4.84E-04 4.08E-04 1.84E-03 i

AP 05 22545 03/29/95 Cr-51 -9.52E-03 9.42E-03 3.51E-02

AP 05 22545 03/29/95 Co-134 -1.02E-03 3.82E-04 1.61E-03 AP 05 22545 03/29/95 Cs-137 -1.20E-04 3.01E-04 1.21E-03 AP 05 22545 03/29/95 Fe-59 4.58E-04 2.55E-03 9.90E-03 l AP 05 22545 03/29/95 I-131 -1.42E-02 1.15E-02 4.39E-02 AP 05 22545 03/29/95 K-40 3.49E-03 4.01E-03 1.43E-02

Radioactivity detected (i.e. , Concentration is > 313td. Deviations) .

i i

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seabrook Station Radiological Environmental Data (January - December 1995) l SAMPLE CONC. STD DEV. MDC j TYPE STA. L8N END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m)

J I AP 05 22545 03/29/95 Mn-54 7.14E-04 4.14E-04 1.31E-03 i AP 05 22545 03/29/95 Ru-103 -1.14E-04 7.82E-04 2.91E-03 1 AP 05 22545 03/29/95 Ru-106 3.03E-03 3.32E-03 1.17E-02

AP 05 22545 03/29/95 ab-124 5.36E-04 1.78E-03 7.02E-03 AP. 05 22545 03/29/95 so-75 2.28E-04 4.31E-04 1.47E-03 l 9.77E-04 3.76E-03 s AP 05 22545 03/29/95 En-65 3.81E-10 AP 05 22545 03/29/95 Er-95 4.91E-04 7.62E-04 2.78E-03 j

5 AP 05 24484 06/28/95 AcTh228 0.00E+00 7.13E-04 2.74E-03 AP 05 24484 06/28/95 Ag-110M 6.48E-05 3.61E-04 1.34E-03 j AP 05 24484 06/28/95 Ba-140 1.20E-03 2.15E-03 8.63E-03 AP 05 24484 06/28/95 Be-7 0.11E+00 8.37E-03 1.80E-02

i 1.87E-03 AP 05' 24484 06/28/95 Ce-141 2.37E-04 5.60E-04 AP 05 24484 06/28/95 Co-144 -8.01E-04 7.64E-04 2.74E-03

.AP 05 24484 06/28/95 Co-57 3.12E-05 8.19E-05 2.78E-04

AP 05 24484 06/28/95 Co-58 1.10E-04 3.23E-04 1.17E-03 l AP 05 24484 06/28/95 Co-60 1.79E-04 1.03E-04 1.62E ; .AP 05 24484 06/28/95 Cr-51 2.59E-03 5.34E-03 1.88E-02 AP 05 24484 06/28/95 Cs-134 -9.21E-05 1.97E-04 7.77E-04 AP 05 24484 06/28/95 Cs-137 -1.83E-04 1.47E-04 6.25E-04 j AP 05 24484 06/28/95 Fe-59 -1.70E-04 1.03E-03 4.49E-03

! AP 05 24484 06/28/95 I-131 -1.12E-02 8.05E-03 3.14E-02 AP 05 24484 06/28/95 K-40 1.14E-02 3.59E-03 1.00E-02

i AP 05 24484 06/28/95 Mn-54 3.00E-04 2.06E-04 6.80E-04 i AP 05 24484 06/28/95 Ru-103 -1.84E-04 4.38E-04 1.75E-03

AP 05 24484 06/28/95 Ru-106 -3.70E-03 2.07E-03 8.87E-03 AP 05 24484 06/28/95 sb-124 -5.57E-04 8.38E-04 3.83E-03 i

AP 05 24484 06/28/95 Se-75 3.45E-05 3.01E-04 1.07E-03 AP 05 24484 06/28/95 Zn-65 -4.66E-04 4.66E-04 2.03E-03 AP 05 24484 06/28/95 Zr-95 5.12E-04 5.96E-04 2.05E-03 AP 05 25964 09/27/95 AcTh228 4.32E-04 1.17E-03 4.34E-03 i AP 05 25964 09/27/95 Ag-110M -1.56E-05 4.21E-04 1.68E-03 l AP 05 25964 09/27/95 Ba-140 6.95E-04 5.40E-03 2.31E-02 l AP 05 25964 09/27/95 Be-7 0.13E+00 1.24E-02 2.37E-02

AP 05 25964 09/27/95 Co-141 4.11E-04 7.89E-04 2.67E-03 i AP 05 25964 09/27/95 Co-144 -6.86E-04 9.71E-04 3.57E-03 AP 05 25964 09/27/95 Co-57 8.75E-05 1.33E-04 4.45E-04

AP 05 25964 09/27/95 Co-58 -3.63E-04 4.87E-04 2.05E-03 AP 05 25964 09/27/95 Co-60 3.86E-04 3.46E-04 1.22E-03 AP 05 25964 09/27/95 Cr-51 2.00E-02 8.45E-03 2.86E-02 AP 05 25964 09/27/95 Co-134 -1.10;-04 2.82E-04 1.11E-03 AP 05 25964 09/27/95 Cs-137 -8.73E-05 2.85E-04 1.18E-03 AP 05 25964 09/27/95 Fe-59 -2.79E-03 1.97E-03 9.84E-03 AP 05 25964 09/27/95 I-131 8.83E-03 1.11E-02 3.95E-02

'4.09E-03 1.77E-02 j AP 05 25964 09/27/95 K-40 -2.00E-03 AP 05 25964 09/27/95 Mn-54 -2.36E-04 2.60E-04 1.16E-03 AP- 05 25964 09/27/95 Ru-103 1.43E-04 5.88E-04 2.26E-03 AP 05 25964 09/27/95 Ru-106 2.12E-03 3.10E-03 1.15E-02

AP 05 25964 09/27/95 sb-124 1.47E-03 1.50E-03 5.39E-03 AP 05 25964 09/27/95 Se-75 1.71E-04 3.47E-04 1.19E-03 j AP 05 25964 09/27/95 En-65 0.00E+00 8.53E-04 3.42E-03

'AP 05 25964 09/27/95 Er-95 7.94E-04 9.29E-04 3.45E-03 i

j . AP 05 27446 12/27/95 AcTh228 -1.02E-04 7.08E-04 2.84E-03

l.

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

s

-. . -~ . -- - -._ - .- . _ - ~ - - - _ . - _ . - . - . - . - . . - -

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! Seabrook Station Radiological Environmental Data j (January - December 1995)

! SAMPLE CONC. STD DEV. MDC

! TYPE STA. L8N END DATE NUCLIDE (pCi/cu.m) (pci/cu.m) (pci/cu.m) 1 i AP 05 27446 12/27/95 Ag-110M 2.81E-05 2.79E-04 1.10E-03 AP 05 27446 12/27/95 Ba-140 7.08E-03 3.56E-03 9.23E-03 8.20E-03

AP 05 27446 12/27/95 Be-7 8.61E-02 1.56E-02

AP 05 27446 12/27/95 Ce-141 -4.01E-04 5.48E-04 1.86E-03

, AP 05 27446 12/27/95 Co-144 -3.15E-05 7.63E-04 2.51E-03

AP 05 27446 12/27/95 Co-57 1.19E-05 1.00E-04 3.25E-04 l AP 05 27446 12/27/95 Co-58 -7.29E-05 3.01E-04 1.30E-03 AP 05 27446 12/27/95 Co-60 -3.97E-04 2.99E-04 1.39E-03 AP 05 27446 12/27/95 Cr-51 -3.46E-03 4.32E-03 1.67E-02

AP 05 27446 12/27/95 Cs-134 5.86E-05 2.26E-04 8.30E-04 i AP 05 27446 12/27/95 Cs-137 4.46E-05 2.23E-04 8.39E-04

, AP 05 27446 12/27/95 Fe-59 -9.10E-04 1.88E-03 7.97E-03 AP 05 27446 12/27/95 I-131 -9.45E-03 7.67E-03 2.99E-02 AP 05 27446 12/27/95 K-40 -4.15E-03 3.79E-03 1.58E-02

- AP 05 27446 12/27/95 Mn-54 -2.69E-04 2.19E-04 9.47E-04 AP 05 27446 12/27/95 Ru-103 9.31E-05 5.35E-04 1.98E-03 4

1 AP 05 27446 12/27/95 Ru-106 -1.89E-03 2.41E-03 9.55E-03 AP 05 27446 12/27/95 Sb-124 -4.19E-05 1.192-03 5.08E-03 i AP 05 27446 12/27/95 Se-75 1.92E-04 2.33E-04 7.80E-04 AP 05 27446 12/27/95 Zn-65 -1.23E-03 6.525-04 2.99E-03 AP 05 27446 12/27/95 Zr-95 7.28E-04 7.78E-04 2.82E-03 AP 06 22546 03/29/95 AcTh228 2.07E-05 8.22E-04 3.08E-03 4 AP 06 22546 03/29/95 Ag-110M 1.77E-04 3.07E-04 1.13E-03 2 AP 06 22546 03/29/95 Ba-140 -1.26E-04 3.15E-03 1.22E-02

AP 06 22546 03/29/95 Be-7 9.51E-02 6.94E-03 1.41E-02

AP 06 22546 03/29/95 Co-141 4.11E-04 6.01E-04 2.04E-03 g

AP 06 22546 03/29/95 Co-144 -1.89E-04 9.67E-04 3.37E-03 AP 06 22546 03/29/95 Co-57 -1.32E-04 1.24E-04 4.43E-04

, AP 06 22546 03/29/95 Co-58 -3.19E-04 2.91E-04 1.19E-03 j AP 06 22546 03/29/95 Co-60 3.02E-04 2.57E-04 8.78E-04

AP 06 22546 03/29/95 Cr-51 -9.83E-03 5.37E-03 2.09E-02 l' AP 06 22546 03/29/95 Cs-134 -2.32E-04 1.99E-04 7.61E-04 AP 06 22546 03/29/95 Cs-137 2.49E-04 2.01E-04 6.78E-04 1 AP 06 22546 03/29/95 Fe-59 1.82E-04 1.01E-03 3.99E-03 AP 06 22546 03/29/95 I-131 5.81E-03 6.08E-03 2.14E-02 1.19E-02

AP 06 22546 03/29/95 K-40 5.09E-05 3.17E-03 AP 06 22546 03/29/95 Mn-54 -1.38E-04 2.13E-04 8.30E-04 AP 06 22546 03/29/95 Ru-103 -2.05E-05 4.24E-04 1.50E-03 AP 06 22546 03/29/95 Ru-106 4.30E-04 1.83E-03 6.59E-03

AP 06 22546 03/29/95 sb-124 6.28E-04 8.70E-04 3.18E-03 AP 06 22546 03/29/95 so-75 7.93E-05 2.74E-04 9.83E-04

AP 06 22546 03/29/95 Zn-65 -1.02E-03 4.59E-04 2.04E-03

AP 06 22546 03/29/95 Zr-95 -1.04E-03 5.74E-04 2.41E-03 AP 06 24485- 06/28/95 AcTh228 1.04E-03 7.10E-04 2.35E-03

- AP 06 24483 06/28/95 Ag-110M -9.43E-05 2.79E-04 1.15E-03 AP 06 24485 06/28/95 Ba-140 -8.09E-03 3.47E-03 1.83E-02 AP 06 24485 06/28/95 Be-7 0.10E+00 7.85E-03 1.41E-02 *

- AP 06 24485 06/28/95 Co-141 6.68E-04 5.412-04 1.74E-03 AP 06 24485 06/28/95 Co-144 -9.95E-04 6.41E-04 2.40E-03 AP 06 24485 06/28/95 Co-57 1.00E-04 S.00E-05 2.57E-04 AP 06 24485 06/28/95 Co-58 5.08E-04 3.00E-04 9.28E-04 AP 06 24485 06/28/95 Co-60 -4.24E-05 2.28E-04 9.77E-04 AP 06 24485 06/28/95 Cr-51 3.33E-03 4.85E-03 1.70E-02

Radioactivity detected (i.e., Concentr'ation is > 3 Std. Deviations).

l

, ~~n v , , , ,

-n - -

I i Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pC1/cu.m) (pCi/cu.m) (pci/cu.m)

AP 06 24485 06/28/95 Co-134 '4.74E-05 1.56E-04 6.01E-04 AP 06 24485 06/28/95 Cs-137 -1.88E-05 1.77E-04 7.14E-04 AP 06 24485 06/28/95 Fe-59 1.93E-04 1.23E-03 5.09E-03

. AP 06 24485 06/28/95 I-131 -4.23E-03 6.51E-03 2.54E-02 AP 06 24485 06/28/95 K-40 5.94E-03 3.10E-03 9.41E-03

< AP 06 24485 06/28/95 Mn-54 -1.71E-04 1.79E-04 7.63E-04 AP 06 24485 06/28/95 Ru-103 3.90E-04 3.74E-04 1.30E-03 AP 06 24485 06/28/95 Ru-106 -2.64E-03 1.91E-03 8.23E-03 AP 06 24485 06/28/95 sb-124 -3.58E-04 1.07E-03 4.69E-03

-AP 06 24485 06/28/95 Se-75 3.04E-05 2.08E-04 7.28E-04 AP 05 24485 06/28/95 En-65 0.OOE+00 4.89E-04 1.96E-03

, AP 06 24485 06/28/95 Er-95 0.00E+00 4.76E-04 1.87E-03

! AP 06 25965 09/27/95 AcTh228 -2.26E-04 1.04E-03 4.10E-03 l l AP 06 25965 09/27/95 Ag-110M -5.58E-04 4.48E-04 1.94E-03 1 AP 06 25965 09/27/95 Ba-140 -9.12E-04 5.17E-03 2.20E-02 AP 06 25965 09/27/95 Be-7 9.67E-02 1.05E-02 2.30E-02

AP 06 25965 09/27/95 Co-141 -5.95E-04 8.03E-04 2.88E-03 l AP 06 25965 09/27/95 Ce-144 3.35E-04 1.02E-03 3.46E-03 AP 06 25965 09/27/95 Co-57 -3.34E-05 1.20E-04 4.25E-04 i AP 06 25965 09/27/95 Co-58 -7.41E-04 3.03E-04 1.61E-03 AP 06 25965 09/27/95 Co-60 5.67E-04 2.63E-04 6.84E-04 AP 06 25965 09/27/95 Cr-51 1.08E-03 7.26E-03 2.66E-02 AP 06 25965 09/27/95 Cs-134 4.90E-04 4.84E-04 1.40E-03 l

i AP 06 25965 09/27/95 Cs-137 -2.60E-04 2.48E-04 1.022-03 AP 06 25965 09/27/95 Fe-59 -9.00E-04 1.78E-03 7.90E-03 l 5.09E-02

! AP 06 25965 09/27/95 I-131 -8.13E-03 1.32E-02 AP 06 25965 09/27/95 K-40 5.57E-03 4.97E-03 1.79E-02

. AP 06 25965 09/27/95 Mn-54 1.10E-04 2.36E-04 9.03E-04 AP 06 25965 09/27/95 Ru-103 -1.06E-04 7.40E-04 2.88E-03 AP 06 25965 09/27/95 Ru-106 -1.51E-03 2.62E-03 1.08E-02 i 5.63E-03

AP 06 25965 09/27/95 Sb-124 -1.39E-03 1.05E-03

AP 06 25965 09/27/95 Se-75 2.90E-04 3.60E-04 1.25E-03 AP 06 25965 09/27/95 En-65 -1.82E-03 6.83E-04 3.43E-03

. AP 06 25965 09/27/95 Er-95 -4.83E-05 5.99E-04 2.45E-03 1

AP 06 27447 12/27/95 AcTh228 4.36E-04 9.59E-04 3.47E-03 I AP 06 27447 12/27/95 Ag-110M 2.57E-04 3.38E-04 1.20E-03 I AP 06 27447 12/27/95 Ba-140 1.17E-03 2.56E-03 1.10E-02 AP 06 27447 12/27/95 Be-7 6.21E-02 8.08E-03 1.91E-02

3 AP 06 27447 12/27/95 Co-141 -1.11E-03 5.28E-04 1.95E-03 j AP 06 27447 12/27/95 Co-144 7.34E-04 7.87E-04 2.44E-03

^; AP 06 27447 12/27/95 Co-57 -2.10E-05 9.43E-05 3.16E-04 AP 06 27447 12/27/95 Co-58 -2.32E-04 4.18E-04 1.76E-03 AP 06 27447 12/27/95 Co-60 -2.42E-04 2.30E-04 1.15E-03 AP 06 27447 12/27/95 Cr-51 3.53E-03 5.52E-03 1.87E-02 AP 06 27447 12/27/95 Co-134 5.17E-04 2.14E-04 6.31E-04 1.83E-04 7.87E-04 AP 06 27447 12/27/95 Cs-137 -1.42E-04 )

AP 06 27447 12/27/95 Fe-59 -1.69E-04 1.60E-03 6.82E-03 AP 06 27447 12/27/95 I-131 -1.84E-03 8.87E-03 3.20E-02 AP 06 27447 12/27/95 K-40 5.67E-03 3.66E-03 1.17E-02 AP 06 27447 12/27/95 Mn-54 -5.89E-05 2.05E-04 8.38E-04

AP 06 27447 12/27/95 Ru-103 9.88E-04 6.25E-04 2.05E-03 AP 06 27447 12/27/95 Ru-106 2.17E-03 2.17E-03 7.575-03 l AP 06 27447 12/27/95 Sb-124 2.98E-03 1.62E-03 4.96E-03

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

1

4 1

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC l TYPE STA. L8N END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m)

AP 06 27447 12/27/95 Se-75 3.64E-04 3.19E-04 1.03E-03 i AP 06 27447 12/27/95 En-65 -1.63E-04 5.40E-04 2.30E-03 AP 06 27447 12/27/95 Er-95 3.01E-05 8.04E-04 3.18E-03 l

AP 07 22547 03/29/95 AcTh228 -1.01E-03 7.35E-04 2.98E-03

AP 07 22547 03/29/95 Ag-110M 4.69E-04 2.52E-04 7.62E-04 AP 07 22547 03/29/95 Ba-140 -5.68E-03 2.58E-03 1.30E-02 i AP 07 22547 03/29/95 Be-7 8.87E-02 6.58E-03 1.11E-02 *

AP 07 '22547 03/29/95 Co-141 6.79E-04 4.46E-04 1.41E-03 AP 07 22547 03/29/95 Co-144 8.135-04 6.43E-04 2.06E-03

AP 07 22547 03/29/95 Co-57 5.08E-05 7.92E-05 2.62E-04 AP 07 22547 03/29/95 Co-58 7.32E-05 2.46E-04 9.12E-04 AP 07 22547 03/29/95 Co-60 3.44E-04 1.52E-04 3.63E-04 AP 07 22547 03/29/95 Cr-51 -2.04E-03 4.08E-03 1.52E-02 AP 07 22547 03/29/95 Co-134 5.14E-05 1.78E-04 6.43E-04

, -AP 07 22547 03/29/95 Cs-137 -3.21E-04 1.60E-04 7.26E-04

'AP 07 22547 03/29/95 Fe-59 4.88E-04 1.29E-03 4.86E-03 AP 07 22547 03/29/95 I-131 7.95E-03 5.57E-03 1.85E-02 AP 07 22547 03/29/95 K-40 4.82E-03 2.83E-03 9.31E-03 AP 07 22547 03/29/95 Mn-54 -4.75E-06 1.88E-04 7.02E-04 I AP 07 22547 03/29/95 Ru-103 3.04E-04 3.49E-04 1.22E-03 AP 07 22547 03/29/95 Ru-106 -7.47E-04 1.72E-03 6.84E-03 AP 07 22547 03/29/95 Sb-124 -7.85E-04 5.89E-04 3.17E-03 AP 07 .22547 03/29/95 Se-75 3.68E-04 2.05E-04 6.34E-04

, AP 07 22547 03/29/95 En-65 -3.15E-04 4.07E-04 1.75E-03 AP 07 22547 03/29/95 Er-95 2.69E-04 5.21E-04 1.97E-03 f AP 07 24486 06/28/95 AcTh228 1.79E-04 6.63E-04 2.55E-03 AP 07 24486 06/28/95 Ag-110M ~2.87E-04 2.49E-04 1.14E-03 i AP 07 24486 06/28/95 Ba-140 0.00E+00 3.23E-03 1.37E-02 AP 07 24486 06/28/95 Be-7 8.73E-02 7.48E-03 1.43E-02

Co-141 4.77E-04 1.71E-03

! AP 07 24486 06/28/95 -3.22E-04 2.31E-03 AP 07 24486 06/28/95 Co-144 1.11E-04 6.76E-04 AP 07 24486 06/28/95 Co-57 -9.57E-05 8.38E-05 3.06E-04

' AP 07 24486 06/28/95 Co-58 -3.25E-04 3.06E-04 1.29E-03

, AP 07 24486 06/28/95 Co-60 -1.10E-04 2.17E-04 9.74E-04 AP 07 24486 06/28/95 Cr-51 -2.72E-03 5.18E-03 1.95E-02 AP 07 24486 06/28/95 Cs-134 2.30E-04 2.27E-04 8.04E-04 f AP 07 24486 06/28/95 Cs-137 -2.85E-04 2.10E-04 9.03E-04 AP 07 24486 06/28/95 Fe 59 1.83E-03 1.19E-03 3.89E-03 AP 07 24486 06/28/95 I-131 9.64E-03 7.03E-03 2.35E-02 AP 07 24486 06/28/95 K-40 -4.35E-04 3.07E-03 1.20E-02 AP 07 24486 06/28/95 Mn-54 -3.C2E-04 1.83E-04 8.23E-04 4 AP 07 24486 06/28/95 Ru-103 -1.58E-04 3.88E-04 1.54E-03 AP 07 24486 06/28/95 Ru-106 2.33E-04 1.60E-03 6.32E-03 AP 07 24486 06/28/95 Sb-124 6.53E-04 1.01E-03 3.89E-03 AP 07 24486 06/28/95 Se-75 -1.63E-04 2.25E-04 8.24E-04 4

AP 07 24486 06/28/95 En-65 -9.15E-04 4.33E-04 2.18E-03 AP 07 24486 06/28/95 Er-95 -3.31E-05 6.32E-04 2.38E-03 AP 07 25966 09/27/95 AcTh228 -7.22E-05 9.55E-04 3.86E-03 AP 07 25966 09/27/95 Ag-110M -7.54E-05 2.92E-04 1.31E-03 AP 07 25966 09/27/95 Ba-140 -4.23E-03 4.23E-03 2.28E-02 AP 07 25966 09/27/95 Be-7 0.11E+00 1.12E-02 2.14E-02

AP 07 25966 09/27/95 Co-141 -4.65E-05 7.67E-04 2.67E-03 4

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

. . . . ~ . - - . .. ~.. . .- .--_-- - - - - - ~ - . . - -- .- - .

i-Seabrook Station Radiological Environmental Data 4 (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. - LSN END DATE NUCLIDE (pC1/cu.m) (pci/cu.m) (pci/cu.m)

AP 07. 25966 C9/27/95 Co-144 5.35E-04 9.01E-04 3.04E-03 AP 07 25966 09/27/95 Co-57 1.29E-04 1.27E-04 4.13E-04 AP 07 25966 09/27/95 Co-58 1.49E-04 5.02E-04 1.86E-03 AP 07 25966 09/27/95 Co-60 -6.67E-05 2.38E-04 1.14E-03 2.17E-02 AP 07 25966 09/27/95 Cr-51. 1.04E-02 6.62E-03 AP 07 25966 09/27/95 Cs-134 -2.56E-04 7.99E-04 3.05E-03 1 AP 07 25966 09/27/95 Co-137 -7.17E-06 2.90E-04 1.15E-03 AP 07 25966 09/27/95 Fe-59 7.93E-04 1.93E-03 7.78E-03 1.39E-02 5.53E-02

{ AP 07 25966 09/27/95 I-131 -1.55E-02 AP 07 25966 09/27/95 K-40 -5.37E-05 4.25E-03 1.67E-02

> AP 07 25966 09/27/95 Mn-54 2.14E-04 2.82E-04 1.00E-03 AP 07 25966 09/27/95 Ru-103 0.00E+00 5.46E-04 2.14E-03 d

AP 07 25966 09/27/95 Ru-106 -1.73E-03 2.08E-03 9.32E-03

AP 07 25966 09/27/95 Sb-124 1.16E-03 1.42E-03 5.40E-03 AP 07 25966 09/27/95 Se-75 -3.48E-04 2.96E-04 1.15E-03 AP 07 25966 09/27/95 En-65 -1.63E-03 8.25E-04 3.88E-03 AP 07 25966 09/27/95 Er-95 4.62E-04 8.25E-04 3.00E-03 AP 07 27448 12/26/95 AcTh228 -4.36E-04 8.81E-04 3.53E-03 I AP 07 27448 12/26/95 Ag-110M 5.61E-05 4.20E-04 1.56E-03 i AP 07 27448 12/26/95 Ba-140 7.64E-03 3.42E-03 4.13E-03 AP 07 27448 12/26/95 Be-7 6.03E-02 7.54E-03 1.80E-02

AP 07 27448 12/26/95 Co-141 -5.29E-04 5.50E-04 1.91E-03 2.57E-03 1 AP 07 27448 12/26/95 Co-144 1.09E-03 8.48E-04

AP 07 27448 12/26/95 Co-57 2.67E-05 9.82E-05 3.18E-04 AP 07 27448 12/26/95 Co-58 -3.28E-04 4.11E-04 1.78E-03

! AP 07 27448 12/26/95 Co-60 3.17E-04 3.26E-04 1.18E-03

} AP 07 27448 12/26/95 Cr-51 2.59E-03 6.04E-03 2.07E-02 AP 07 27448 12/26/95 Cs-134 1.34E-04 2.21E-04 7.94E-04 AP 07 27448 12/26/95 Cs-137 7.30E-05 1.80E-04 6.88E-04

AP 07 27448 12/26/95 Fe-59 -2.04E-04 1.28E-03 5.78E-03

AP 07 27448 12/26/95 I-131 -6.29E-03 9.42E-03 3.51E-02

, AP 07 27448 12/26/95 K-40 4.25E-03 4.90E-03 1.72E-02 i AP 07 27448 12/26/95 Hn-54 3.33E-04 2.20E-04 6.99E-04

AP 07 27448 12/26/95 Ru-103 4.01E-04 5.49E-04 1.95E-03 AP 07 27448 12/26/95 Ru-106 3.32E-03 2.15E-03 7.05E-03 AP 07 27448 12/26/95 Sb-124 4.49E-04 1.35E-03 5.39E-03 AP 07 27448 12/26/95 Se-75 -2.57E-04 2.77E-04 1.03E-03 AP 07 27448 12/26/95 En-65 -1.64E-04 5.42E-04 2.31E-03 AP 07 27448 12/26/95 Er-95 -1.00E-03 8.24E-04 3.59E-03 AP 08 22548 03/29/95 AcTh228 5.62E-04 1.04E-03 3.83E-03 AP 08 22548 03/29/95 Ag-110M -1.99E-04 4.21E-04 1.73E-03 AP 08 22548 03/29/95 Ba-140 2.44E-03 3.44E-03 1.35E-02 AP 08 22548 03/29/95 Be-7 0.10E+00 9.73E-03 2.135-02

AP 08 22548 03/29/95 Co-141 6.64E-04 8.13E-04 2.78E-03 AP 08 22548 03/29/95 Co-144 -7.47E-04 1.198-03 4.39E-03 AP 08 22548' 03/29/95 Co-57 -3.32E-04 1.49E-04 5.89E-04 AP 08 22548 03/29/95 Co-58 2.03E-04 5.18E-04 1.91E-03 AP 08 22548 03/29/95 Co-60 1.23E-04 3.76E-04 1.44E-03 AP 08 22548 03/29/95 Cr-51 0.00E+00 6.36E-03 2.35E-02 1.52E-03

! AP 08 22548 03/29/95 Cs-134 -1.82E-04 4.06E-04 AP- 08 22548 03/29/95 Co-137 2.02E-05 2.31E-04 8.725-04

AP 08 22548 03/29/95 Fe-59 -3.55E-04 1.07E-03 5.05E-03 AP 08 22548 03/29/95 I-131 -2.29E-02 8.62E-03 3.69E-02

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

t

.r - , .-- . ,.--.--s-. ,-. -. % , --- -.r.. , . _ - ,- , .,v-, -,,.--m

- seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. 8TD DEV. MDC TYPE STA. L5N END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m)

AP 08 22548 03/29/95 K-40 7.35E-03 4.13E-03 1.30E-02 AP 08 22548 03/29/95 Mn-54 -2.385-04 3.06E-04 1.27E-03 AP 08 22548 03/29/95 Ru-103 2.00E-04 6.41E-04 2.42E-03 AP 08 22548 03/29/95 Ru-106 5.52E-04 2.57E-03 9.35E-03 AF 08 22548 03/29/95 Sb-124 -1.86E-04 1.63E-03 6.45E-03 AP 08 22548 03/19/95 se-75 -4.53E-05 3.30E-04 1.22E-03 AP 08 22548 03/29/95 En-65 -1.18E-03 8.84E-04 3.86E-03 AP 08 22548 03/29/95 Er-95 5.31E-04 7.50E-04 2.74E-03 AP 08 24487 06/28/95 AcTh228 -9.00E-05 6.75E-04 2.71E-03 AP 08 24487 06/28/95 Ag-110M 7.50E-06 3.09E-04 1.20E-03 AP 08 24487 06/28/95 Ba-140 7.70E-04 2.32E-03 1.02E-02 AP 08 24487 06/28/95 Be-7 9.89E-02 8.28E-03 1.48E-02

4 AP 08 24487 '06/28/95 Co-141 2.92E-04 5.73E-04 1.92E-03

< AP 08 24487 06/28/95 Co-144 -6.45E-04 7.47E-04 2.70E-03

.AP 08 24487 06/28/95 Co-57 4.71E-05 9.19E-05 3.09E-04 AP 08 24487 06/28/95 Co-58 5.93E-04 2.45E-04 5 55E-04 6.44E-04

! AP 08 24487 06/28/95 Co-60 5.63E-04 2.46E-04 j AP 08 24487 06/28/95 Cr-51 7.50E-03 5.61E-03 1.88E-02 AP 08 24487 06/28/95 Cs-134 -1.07E-04 1.78E-04 7.15E-04 i

AP 08 24487 06/28/95 Cs-137 1.27E-04 1.80E-04 6.76E-04 I' AP 08 24487 06/28/95 Fe-59 9.70E-04 1.20E-03 4.498-03 AP 08 24487 06/28/95 I-131 2.01E-03 7.72E-03 2.81E-02 AP 08 24487 06/28/95 K-40 5.14E-03 2.58E-03 7.69E-03 AP 08 24487 06/28/95 Mn-54 -1.65E-04 2.45E-04 9.74E-04 AP 08 24487 06/20/95 Ru-103 -7.97E-04 4.89E-04 2.07E-03 i AP 08 24487 06/2E!95 Ru-106 4.53E-04 2.09E-03 8.04E-03

AP 08 24487 06/28/95 sb-124 -1.59E-03 1.08E-03 5.38E-03

! AP 08 24487 06/28/95 Se-75 1.71E-05 2.21E-04 7.82E-04 4

AP 08 24487 06/28/95 En-65 4.78E-04 6.32E-04 2.28E-03

, AP 08 24487 06/28/95 Er-95 1.61E-03 5.80E-04 1.47E-03 f AP 08 25967 09/27/95 AcTh228 1.49E-03 1.32E-03 4.52E-03 AP 08 25967 09/27/95 Ag-110M 3.35E-04 4.02E-04 1.46E-03 AP 08 25967 09/27/95 Ba-140 2.07E-03 5.46E-03 2.22E-02 AP 08 25967 09/27/95 Be-7 0.11E+00 1.04E-02 2.13E-02 *

] 7.05E-04 2.39E-03 i AP 08 25967 09/27/95 Co-141 3.575-04 AP 08 25967 09/27/95 Ce-144 2.12E-03 1.13E-03 3.48E-03 AP 08 25967 09/27/95 Co-57 9.58E-05 1.25E-04 4.14E-04

AP 08 25967 09/27/95 Co-58 0.00E+00 4.28E-04 1.68E-03

$ AP 08 25967 09/27/95 Co-60 3.13E-04 1.81E-04 2.83E-04 AP 08 25967 09/27/95 Cr-51 0.00E+00 6.96E-03 2.59E-02 AP 08 25967 09/27/95 Co-1J4 -1.26E-03 8.73E-04 3.22E-03 4

AP 08 25967 09/27/95 Co-137 -8.93E-04 3.26E-04 1.52E-03

!- AP 08 25967 09/27/95 Fe-59 1.35E-03 1.23E-03 4.48E-03 AP 08 25967 09/27/95 I-131 -1.92E-02 1.46E-02 5.82E-02 AP 08 25967 09/27/95 K-40 -5.66E-03 4.04E-03 1.82E-02 j AP 08 25967 09/27/95 Mn-54 -7.97E-05 3.11E-04 1.22E-03 AP 08 25967 09/27/95 Ru-103 2.57E-04 5.75E-04 2.14E-03 AP 08 25967 09/27/95 Ru-106 3.46E-03 2.60E-03 9.00E-03 AP 08 25967 09/27/95 sb-124 -4.53E-04 9.47E-04 5.06E-03 4 AP 08 25967 09/27/95 Se-75 -5.46E-04 3.18E-04 1.25E-03 AP 08 25967 09/27/95 En-65 -1.83E-03 9.32E-04 4.21E-03

AP 08 25967 09/27/95 Er-95 1.32E-04 6.27E-04 2.49E-03 i

s

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

e

- . . , n. ,,--- --m - , , --- i

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. HDC TYPE STA. LSN END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m)

~~---------------------------------------------------------~~

AP 08 27449 12/26/95 AcTh228 -3.71E-04 6.76E-04 2.90E-03 AP 08 27449 12/26/95 Ag-110M 1.90E-04 3.68E-04 1.33E-03 AP 08 27449 12/26/95 Ba-140 -2.45E-03 3.51E-03 1.70E-02 AP 08 27449 12/26/95 Be-7 7.71E-02 8.15E-03 1.67E-02

AP 08 27449 12/26/95 Co-141 1.19E-03 5.84E-04 1.68E-03 AP 08 27449 12/26/95 Co-144 -1.14E-03 7.82E-04 2.78E-03 AP 08 27449 12/26/95 Co-57 7.15E-05 1.01E-04 3.19E-04 AP 08 27449 12/26/95 Co-58 2.80E-04 3.98E-04 1.50E-03 AP 08 27449 12/26/95 Co-60 -1.68E-04 1.76E-04 9.47E-04 AP 08 27449 12/26/95 Cr-51 -3.95E-03 5.86E-03 2.16E-02 AP 08 27449 12/26/95 Cs-134 -1.82E-04 2.13E-04 8.61E-04 AP 08 27449 12/26/95 Cs-137 1.89E-04 2.50E-04 8.88E-04 AP 08 27449 12/26/95 Fe-59 1.71E-03 1.77E-03 6.43E-03 AP 08 27449 12/26/95 I-131 -2.25E-03 8.28E-03 3.06E-02 AP 08 27449 12/26/95 K-40 -2.71E-03 4.19E-03 1.67E-02 AP 08 27449 12/26/95 Mn-54 -2.21E-04 2.52E-04 1.04E-03 AP 08 27449 12/26/95 Ru-103 -7.01E-04 5.20E-04 2.19E-03 AP 08 27449 12/26/95 Ru-106 -1.74E-03 2.30E-03 9.27E-03 AP 08 27449 12/26/95 Sb-124 -2.24E-03 1.34E-03 6.73E-03 AP 08 27449 12/26/95 So-75 7.06E-04 2.69E-04 7.72E-04 AP 08 27449 12/26/95 Zn-65 8.15E-04 5.41E-04 1.76E-03 AP 08 27449 12/26/95 Zr-95 0.00E+00 6.49E-04 2.67E-03 l

l l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l l

- -- - - . - - - - - -.-. - - .. - . - - - . ... - . . . - _ . . - . . - .~

J i-Seabrook Station Radiological Environmental Data (January - December 1995) 1 5 8 AMPLE CONC. STD DEV. MDC

- TYPE STA. L5N END DATE NUCLIDE (pci/cu.m) (pC1/cu.m) (pC1/cu.m) 4 Air Particulates 1

AP 01 20978 01/04/9h GR-B 1.94E-02 1.46E-03 3.393-03

i AP 02 20979 01/04/95 GR-B 2.09E-02 1.44E-03 3.22E-03 *

AP OS 20980 01/04/95 GR-B 2.29E-02 1.54E-03 3.415-03

AP 04 20981 01/04/95 GR-B 2.11E-02 1.53E-03 3.49E-03

2.065-02 1.405-03 AP 05 20982 01/04/95 GR-B 3.12E-03

AP 06 20983 01/04/95 GR-B 2.05E-02 1.49E-03 3.41E-03

AP 07 20984 01/04/95 GR-B 2.11E-02 1.51E-03 3.44E-03

2.08E-02 1.47E-03 3.37E-03

t AP OIJ 20985 01/04/95 GR-B AP. 01 21109 01/11/95 GR-B 2.54E-02 1.54E-03 3.34E-03

l 2.52E-02 1.48E-03 3.16E-03

AP C2 21110 01/11/95 GR-B AP 03 21111 01/11/95 GR-B 2.84E-02 1.57E-03 3.31E-03

AP 04 21112 01/11/95 GR-B 2.55E-02 1.56E-03 3.37E-03

AP 05 21113 01/11/95 GR-B 2.62E-02 1.47E-03 3.10E-03

l AP 06 21114 01/11/95 GR-B 2.29E-02 1.52E-03 3.41E-03

AP 07 21115 01/11/95 GR-B 2.51E-02 1.58E-03 3.45E-03

AP 08 21116 01/11/95 GR-B 2.24E-02 1.50E-03 3.32E-03

j AP 01 21254 01/18/95 GR-B 1.52E-02 1.42E-03 3.52E-03

AP 02 21255 01/18/95 GR-B 1.53E-02 1.38E-03 3.41E-03

AP 03 21256 01/18/95 GR-B 1.71E-02 1.48E-03 3.60E-03

AP 04 21257 01/18/95 GR-B 1.54E-02 1.51E-03 3.79E-03

AP 05 21258 01/18/95 GR-B 1.23E-02 1.28E-03 3.24E-03

i i AP 06 21259 01/18/95 GR-B 1.44E-02 1.40E-03 3.49E-03

J AP 07 21260 01/18/95 GR-B 1.43E-02 1.40E-03 3.51E-03 *

AP 08 21261 01/18/95 GR-B 1.54E-02 1.42E-03 3.51E-03

l AP 01 21337 01/25/95 GR-B 4.04E-03 1.135-03 3.36E-03

l AP 02 21338 01/25/95 GR-B 4.05E-03 1.12E-03 3.30E-03

l AP 03 21339 01/25/95 GR-B 4.15E-03 1.12E-03 3.32E-03 *

[ AP 04 21340 01/25/95 GR-B 3.62E-03 1.18E-03 3.47E-03 *

. AP 05 21341 01/25/95 GR-B 3.96E-03 1.07E-03 3.14E-03 *

! AP 06 21342 01/25/95 GR-B 3.50E-03 1.12E-03 3.36E-03 *

, AP 07 21343 01/25/95 GR-B 4.35E-03 1.16E-03 3.43E-03

j AP 08 21344 01/25/95 GR-B 4.33E-03 1.14E-03 3.34E-03

AP 01 21468 02/01/95 GR-B 1.47E-02 1.41E-03 3.60E-03

AP 02 21469 02/01/95 GR-B 1.57E-02 1.39E-03 3.42E-03 *

AP 03 21470 02/01/95 GR-B 1.82E-02 1.51E-03 3.67E-03

AP 04 21471 02/01/95 GR-B 1.39E-02 1.49E-03 3.80E-03

i AP 05 21472 02/01/95 GR-B 1.80E-02 1.41E-03 3.38E-03 * ,

' AP 06 21473 02/01/95 GR-B 1.85E-02 1.50E-03 3.63E-03 * '

AP 07 21474 02/01/95 GR-B 1.88E-02 1.50E-03 3.64E-03

i AP 08 21475 02/01/95 GR-B 1.88E-02 1.48E-03 3.58E-03

AP 01 21619 02/08/95 GR-B 2.02E-02 1.50E-03 3.53E-03

AP 02 21620 02/08/95 GR-B 2.33E-02 1.53E-03 3.46E-03

i AP ' 03 21621 02/08/95 GR-B 2.64E-02 1.68E-03 3.74E-03

AP 04 21622 02/08/95 GR-B 2.17E-02 1.61E-03 3.78E-03

AP 05 21623 02/08/95 GR-B 4.02E-02 1.98E-03 4.24E-03

AP 06 21624 02/08/95 GR-B 2.54E-02 1.61E-03 3.56E-03

AP 07 21625 02/08/95 GR-B 2.21E-02 1.54E-03 3.53E-03

AP 08 21626 02/08/95 GR-B 2.14E-02 1.53E-03 3.53E-03

z

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

-- .- +, - , . - , ,_-,,,r---i- w-.,--i---- wv -,w w -wr- , =si-,-- ---e- --

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m)

AP 01 21719 02/14/95 GR-B 2.15E-02 1.72E-03 4.09E-03

AP 02 21720 02/14/95 GR-B 2.43E-02 1.67E-03 3.84E-03

AP 03 21721 02/15/95 GR-B 2.17E-02 1.64E-03 3.81E-03

AP 04 21722 02/15/95 GR-B 2.26E-02 1.67E-03 3.89E-03

AP 05 21723 02/15/95 GR-B 2.72E-02 1.72E-03 3.82E-03

AP 06 21724 02/14/95 GR-B 1.99E-02 1.72E-03 4.20E-03

AP 07 21725 02/14/95 GR-B 2.86E-02 1.87E-03 4.25E-03

AP 08 21726 02/14/95 GR-B 2.29E-02 1.73E-03 4.06E-03

AP 01 21801 02/22/95 GR-B 2.25E-02 1.41E-03 3.04E-03

AP 02 21802 02/22/95 GR-B 2.44E-02 1.37E-03 2.88E-03

AP 03 21803 02/22/95 GR-B 2.79E-02 1.66E-03 3.52E-03

AP 04 21804 02/22/95 GR-B 2.57E-02 1.68E-03 3.72E-03

AP 05 21805 02/22/95 GR-B 2.43E-02 1.47E-03 3.13E-03

AP 06 21806 02/22/95 GR-B 2.52E-02 1.45E-03 3.04E-03

AP -07 21807 02/22/95 GR-B 2.57E-02 1.46E-03 3.04E-03

AP 08 21808 02/22/95 GR-B 2.68E-02 1.46E-03 3.02E-03

AP 01 21855 03/01/95 GR-B 1.37E-02 1.35E-03 3.42E-03

AP 02 21856 03/01/95 GR-B 1.60E-02 1.33E-03 3.19E-03

AP 03 21857 03/01/95 GR-B 1.65E-02 1.45E-03 3.53E-03

AP 04 21858 03/01/95 GR-B 2.01E-02 1.57E-03 3.68E-03

AP 05 21859 03/01/95 GR-B 1.78E-02 1.32E-03 3.05E-03 * !

AP 06 21860 03/01/95 GR-B 1.85E-02 1.47E-03 3.48E-03 * ,

AP 07 21861 03/01/95 GR-B 1.91E-02 1.46E-03 3.43E-03

l' AP 08 21862 03/01/95 GR-B 1.86E-02 1.46E-03 3.41E-03

AP 01 21973 03/08/95 GR-B 8.19E-03 1.23E-03 3.34E-03

AP 02 21974 03/08/95 GR-B 1.52E-02 1.30E-03 3.14E-03

AP 03 21975 03/08/95 GR-B 1.70E-02 1.41E-03 3.34E-03

AP 04 21976 03/08/95 GR-B 1.67E-02 1.47E-03 3.58E-03

AP 05 21977 03/08/95 GR-B 1.63E-02 1.28E-03 3.00E-03

AP 06 21978 03/08/95 GR-B 1.77E-02 1.44E-03 3.40E-03

AP 07 21979 03/08/95 GR-B 1.44E-02 1.36E-03 3.38E-03

AP 08 21980 03/08/95 GR-B 1.25E-02 1.30E-03 3.33E-03

AP 01 22139 03/15/95 GR-B 9.94E-03 1.29E-03 3.46E-03

AP 02 22140 03/15/95 GR-B 1.23E-02 1.28E-03 3.26E-03

AP 03 22141 03/15/95 GR-B 1.66E-02 1.48E-03 3.64E-03

AP 04 22142 03/15/95 GR-B 1.56E-02 1.49E-03 3.71E-03

AP 05 22143 03/15/95 GR-B 1.60E-02 1.44E-03 3.53E-03

AP 06 22144 03/15/95 GR-B 1.50E-02 1.40E-03 3.43E-03

AP 07 22145 03/15/95 GR-B 1.32E-02 1.39E-03 3.54E-03

AP 08 22146 03/15/95 GR-B 1.52E-02 1.40E-03 3.43E-03

AP 01 22225 03/22/95 GR-B 1.07E-02 1.26E-03 3.29E-03

AP 02 22226 03/22/95 GR-B 1.18E-02 1.25E-03 3.19E-03

AP 03 22227 03/22/95 GR-B 1.31E-02 1.36E-03 3.46E-03

AP 04 22228 03/22/95 GR-B 1.33E-02 1.41E-03 3.57E-03

AP 05 22229 03/22/95 GR-B 1.11E-02 1.29E-03 3.37E-03

AP 06 22230 03/22/95 GR-B 1.15E-02 1.29E-03 3.32E-03

AP 07 22231 03/22/95 GR-B 1.01E-02 1.28E-03 3.34E-03

AP 08 22232 03/22/95 GR-B 1.10E-02 1.27E-03 3.28E-03

AP 01 22352 03/29/95 GR-B 1.13E-02 1.32E-03 3.45E-03 *

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

- -.~-- -. . . - - - . - - - _

seabrook station Radiological Environmental Data (January - December 1995)

SAMPLE 00NC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/cu.m) (pC1/cu.m) (pC1/cu.m)

AP 02 22353 03/29/95 GR-B 1.14E-02 1.27E-03 3.32E-03

AP 03 22354 03/29/95 GR-B 1.10E-02 1.38E-03 3.65E-03

AP 04 22355 03/29/95 GR-B 1.43E-02 1.35E-03 3.38E-02

AP 05 22356 03/29/95 GR-B 1.34E-02 1.40E-03 3.59E-03

AP 06 22357 03/29/95 GR-B 1.17E-02 1.35E-03 3.53E-03

AP 07 22358 03/29/95 GR-B 1.17E-02 1.32E-03 3. 4 6E-0.'s

AP 08 22359 03/29/95 GR-B 1.25E-02 1.35E-03 3.45E-03

AP 01 22412 04/05/95 GR-B 1.90E-02 1.45E-03 3.36E-03

AP 02 22413 04/05/95 GR-B 2.575-02 1.52E-03 3.23E-03

AP 03 22414 04/05/95 GR-B 2.23E-02 1.58E-03 3.59E-03

AP 04 22415 04/05/95 GR-B 2.39E-02 1.52E-03 3.31E-03

AP 05 22416 04/05/95 GR-B 2.28E-02 1.55E-03 3.46E-03

AP 06 22417 04/05/95 GR-B 2.13E-02 1.50E-03 3.43E-03

AP 07 22418 04/05/95 GR-B 2.18E-02 1.52E-03 3.41E-03

AP 08 22419 04/05/95 GR-B 2.30E-02 1.53E-03 3.35E-03

AP 01 22639 04/12/95 GR-B 2.56E-02 1.58E-03 3.40E-03

AP 02 22640 04/12/95 GR-B 2.72E-02 1.56E-03 3.22E-03

AP 03 22641 04/12/95 GR-B 2.78E-02 1.63E-03 3.43E-03

3.15E-02 3,19E-03

AP 04 22642 04/12/95 GR-B 1.612-03 AP 05 22643 04/12/95 GR-B 2.59E-02 1.60E-03 3.46E-03

l AP 06 22644 04/12/95 GR-B 1.98E-02 1.48E-03 3.37E-03

AP 07 22645 04/12/95 GR-B 2.84E-02 1.65E-03 3.42E-03 * ,

AP 08 22646 04/12/95 GR-B 2.51E-02 1.56E-03 3.37E-03

AP 01 12825 04/19/95 GR-B 6.36E-03 1.22E-03 3.42E-03

AP 02 22826 04/19/95 GR-B 1.10E-02 1.29E-03 3.34E-03

AP 03 22827 04/19/95 GR-B 1.16E-02 1.38E-03 3.64E-03

AP 04 22828 04/19/95 GR-B 1.18E-02 1.31E-03 3.35E-03

AP 05 22829 04/19/95 GR-B 9.19E-03 1.30E-03 3.54E-03

AP 06 22830 04/19/95 GR-B 1.01E-02 1.29E-03 3.45E-03

AP 07 22831 04/19/95 GR-B 1.14E-02 1.35E-03 3.55E-03

AP 08 22832 04/19/95 GR-B 8.80E-03 1.22E-03 3.32E-03

AP 01 22936 04/26/95 GR-B 1.15E-02 1.31E-03 3.42E-03

4 AP 02 22937 04/26/95 GR-B 1.11E-02 1.288-03 3.33E-03

AP 03 22938 04/26/95 GR-B 1.32E-02 1.46E-03 3.77E-03

AP 04 22939 04/26/95 GR-B 1.31E-02 1.34E-03 3.38E-03

AP' 05 22940 04/26/95 GR-B 1.41E-02 1.35E-03 3.36E-03

AP 06 22941 04/26/95 GR-B 1.21E-02 1.33E-03 3.44E-03

AP 07 22942 04/26/95 GR-B 1.19E-02 1.33E-03 3.38E-03

AP 08 22943 04/26/95 GR-B 9.89E-03 1.31E-03 3.45E-03

AP 01 23024 05/03/95 GR-B 8.71E-03 1.23E-03 3.34E-03

AP 02 23025 05/03/95 GR-B 5.28E-03 1.15E-03 3.31E-03

AP 03 23026 05/03/95 GR-B 1.14E-02 1.37E-03 3.57E-03

AP 04 23027 05/03/95 GR-B 9.76E-03 1.25E-03 3.34E-03

AP 05 23028 05/03/95 GR-B 9.03E-03 1.19E-03 3.17E-03

AP 06 23029 05/03/95 GR-B 9.45E-03 1.29E-03 3.42E-03

AP 07 23030 05/03/95 GR-B 9.19E-03 1.30E-03 3.44E-03

AP 08 23031 05/03/95 GR-B 9.63E-03 1.24E-03 3.32E-03

AP 01 23259 05/10/95 CR-B 1.38E-02 1.43E-03 3.63E-03

l AP 02 23260 05/10/95 GR-B 1.49E-02 1.44E-03 3.64E-03 *

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1 l

- - ._ - - -- .- ~. - .. - _ - . _ ~. _- - . - - - . - . _ - - - -- __ - -.-_- _ - .

M 4

Seabrook Station Radiological Environmental Data (January - December 1995) 1 SAMPLE CONC. STD DEV. MDC 4

AP 03 23261 05/10/95 GR-B 1.66E-02 1.56E-03 3.90E-03

1 AP 04 23262 05/10/95 GR-B 1.55E-02 1.49E-03 3.72E-03 *

AP 05 23263 05/10/95 GR-B 1.44E-02 1.35E-03 3.41E-03

4 AP 06 23264 05/10/95 GR-B 1.62E-02 1.44E-03 3.54E-03

AP 07 23265 05/10/95 GR-B 1.54E-02 1.46E-03 3.66E-03

i AP 08 23266 05/10/95 GR-B 1.35E-02 1.42E-03 3.63E-03

AP 01 23437 05/17/95 GR-B 3.05E-03 1.14E-03 3.46E-03 AP 02 23438 05/17/95 GR-B 5.56E-03 1.20E-03 3.50E-03

AP 03 23439 05/17/95 GR-B 4.47E-03 1.20E-03 3.56E-03 *

+

AP 04 23440 05/17/95 GR-B 4.47E-03 1.23E-03 3.63E-03

AP 05 23441 05/17/95 GR-B 4.37E-03 1.09E-03 3.12E-03

AP 06 23442 05/17/95 GR-B 4.00E-03 1.23E-03 3.61E-03

AP 07 23443 05/17/95 GR-B 4.943-03 1.17E-03 3.34E-03

AP 08 -23444 05/17/95 GR-B 4.80E-03 1.17E-03 3.44E-03

AP 01 23506 05/23/95 GR-B 6.62E-03 1.45E-03 4.19E-03 *

! AP 02 23507 05/23/95 GR-B 8.31E-03 1.56E-03 4.46E-03 *

, AP 03 23508 05/24/95 GR-B 7.96E-03 1.43E-03 4.01E-03

hP 04 23509 05/24/95 GR-B 8.78E-03 1.37E-03 3.80E-03

F.P 05 23510 05/23/95 GR-B 1.05E-02 1.57E-03 4.32E-03

AP 06 23511 05/23/95 GR-B 9.41E-03 1.49E-03 4.15E-03

i AP 07 23512 05/23/95 GR-B 7.36E-03 1.49E-03 4.25E-03

a AP 08 23513 05/23/95 GR-B 6.91E-03 1.41E-03 4.09E-03

AP 01 23696 05/31/95 GR-B 1.08E-02 1.20E-03 3.12E-03 *

AP 02 23697 05/31/95 GR-B 1.15E-02 1.28E-03 3.32E-03

f AP 03 23698 05/31/95 GR-B 1.15E-02 1.39E-03 3.67E-03

AP 04 23699 05/31/95 GR-B 9.90E-03 1.30E-03 3.53E-03

9.41E-03 1.19E-03 AP 05 23700 05/31/95 GR-B 3.17E-03

AP 06 23701 05/31/95 GR-B 1.16E-02 1.22E-03 3.135-03

l AP 07 23702 05/31/95 GR-B 9.64E-03 1.19E-03 3.14E-03

j AP 08 23703 05/30/95 GR-B 1.20E-02 1.31E-03 3.40E-03

j

! l 3

AP 01 23838 06/07/95 GR-B 1.89E-02 1.45E-03 3.27E-03

i AP 02 23839 06/07/95 GR-B 2.14E-02 1.56E-03 3.54E-03

l AP 03 23840 06/07/95 GR-B 2.03E-02 1.60E-03 3.71E-03

AP 04 23841 06/07/95 GR-B 1.895-02 1.51E-03 3.54E-03

AP 05 23842 06/07/95 GR-B 1.90E-02 1.50E-03 3.43E-03

AP 06 23843 06/07/95 GR-B 2.10E-02 1.46E-03 3.27E-03

AP 07 23844 06/07/95 GR-B 1.91E-02 1.46E-03 3.34E-03 * .l AP 08 23845 06/07/95 GR-B 1.62E-02 1.30E-03 2.98E-03

AP 01 23969 06/14/95 GR-B 9.32E-03 1.23E-03 3.26E-03

AP 02 23970 06/14/95 GR-B 5.92E-03 1.23E-03 3.53E-03

AP 03 23971 06/14/95 GR-B 9.69E-03 1.37E-03 3.64E-03

AP 04 23972 06/14/95 GR-B 9.20E-03 2.44E-03 7.19E-03

AP 05 23973 06/14/95 GR-B 9.32E-03 1.37E-03 3.38E-03

AP 06 23974 06/14/95 GR-B 1.14E-02 1.29E-03 3.31E-03

AP 07 23975 06/14/95 GR-B 7.90E-03 1 23E-03 3.38E-03

AP 08 23976 06/14/95 GR-B 9.91E-03 1.26E-03 3.33E-03

AP 01 24031 06/21/95 GR-B 2.68E-02 1.60E-03 3.44E-03

AP 02 24032 06/21/95 GR-B 2.86E-02 1.73E-03 3.75E-03 * ,

, AP 03 24033 06/21/95 GR-B 2.87E-02 1.83E-03 4.03E-03

I i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

4

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pCi/cu.m) (pCi/cu.m) (pci/cu.m)

AP 04 24034 06/21/95 GR-B 2.65E-02 1.70E-03 3.74E-03

AP 05 24035 06/21/95 GR-B 3.19E-02 1.74E-03 3.60E-03

AP 06 24036 06/21/95 GR-B 2.58E-02 1.59E-03 3.465-03

AP 07 24037 06/21/95 GR-B 2.34E-02 1.52E-03 3.39E-03

4 AP 08 24038 06/21/95 GR-B 2.47E-02 1.58E-03 3.49E-03

AP 01 24207 06/28/95 GR-B 1.06E-02 1.26E-03 3.30E-03

AP 02 24208 06/28/95 GR-B 1.09E-02 1.38E-03 3.62E-03

AP 03 24209 06/28/95 GR-B 1.21E-02 1.41E-03 3.66E-03

AP 04 24210 06/28/95 GR-B 9.00E-03 1.26E-03 3.37E-03

AP 05 24211 06/28/95 GR-B 1.23E-02 1.35E-03 3.42E-03

AP 06 24212 06/28/95 GR-B 1.26E-02 1.32E-03 3.33E-03

AP 07 24213 06/28/95 GR-B 1.08E-02 1.28E-03 3.35E-03

AP 08 24214 06/28/95 GR-B 9.91E-03 1.27E-03 3.36E-03

AP 01 24240 07/05/95 GR-B 1.37E-02 1.40E-03 3.58E-03

AP 02 24241 07/05/95 GR-B 1.50E-02 1.55E-03 3.95E-03

AP 03 24242 07/05/95 GR-B 1.27E-02 1.60E-03 4.26E-03

AP 04 24243 07/05/95 GR-B 1.50E-02 1.52E-03 3.88E-03

AP 05 24244 07/05/95 GR-B 1.66E-02 1.52E-03 3.79E-03

AP 06 24245 07/05/95 GR-B 1.49E-02 1.42E-03 3.56E-03

AP 07 24246 07/05/95 GR-B 1.54E-02 1.47E-03 3.66E-03

AP 08 24247 07/05/95 GR-B 1.15E-02 1.37E-03 3.62E-03

AP 01 24432 07/12/95 GR-B 1.69E-02 1.42E-03 3.42E-03

AP 02 24433 07/12/95 GR-B 1.92E-02 1.49E-03 3.51E-03

AP 03 24434 07/12/95 GR-B 1.97E-02 1.44E-03 3.37E-03

AP 04 24435 07/12/95 GR-B 2.05E-02 1.45E-03 3.34E-03 * ,

AP 05 24436 07/12/95 GR-B 1.06E-02 1.44E-03 3.41E-03

i AP 06 24437 07/12/95 GR-B 1.86E-02 1.46E-03 3.51E-03

i AP 07 24438 07/12/95 GR-B 1.61E-02 1.41E-03 3.44E-03

l AP 08 24439 07/12/95 GR-B 1.54E-02 1.45E-03 3.62E-03 *

AP 01 24615 07/19/95 GR-B 1.75E-02 1.45E-03 3.48E-03 *

! AP 02 24616 07/19/95 GR-B 2.34E-02 1.59E-03 3.53E-03

AP 03 24617 07/19/95 GR-B 2.25E-02 1.50E-03 3.35E-03

AP 04 24618 07/19/95 GR-B 2.20E-02 1.45E-03 3.22E-03

l AP 05 24619 07/19/95 GR-B 2.23E-02 1.52E-03 3.43E-03

AP 06 24620 07/19/95 GR-B 2.35E-02 1.54E-03 3.40E-03

AP 07 24621 07/19/95 GR-B 1.97E-02 1.50E-03 3.52E-03

AP 08 24622 07/19/95 GR-B 1.74E-02 1.48E-03 3.54E-03

i AP 01 24705 07/26/95 GR-B 2.07E-02 1.52E-03 3.51E-03

j

AP 02 24706 07/26/95 GR-B 2.32E-02 1.59E-03 3.61E-03 *

]

2.07E-02 1.53E-03

~

AP 03 24707 07/26/95 GR-B 3.56E-03 *

. AP 04 24708 07/20/95 GR-B 1.19E-02 8.32E-03 2.61E-02 l AP 05 24709 07/26/95 GR-B 2.27E-02 1.56E-03 3.54E-03

I AP 06 24710 07/26/95 GR-B 2.19E-02 1.57E-03 3.63E-03

l AP 07 24711 07/26/95 GR-B 2.20E-02 1.60E-03 3.65E-03

AP 08 24712 07/26/95 GR-B 2.14E-02 1.56E-03 3.57E-03

AP 01 24772 08/02/95 GR-B 2.00E-02 1.48E-03 3.42E-03

AP 02 24773 08/02/95 GR-B 2.66E-02 1.64E-03 3.53E-03

7 AP 03 24774 08/02/95 GR-B 2.63E-02 1.63E-03 3.50E-03 *

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

. ._- _. - .. - . - .-- ~- - -. - - ~ _ _ - _ _ _ _ _ _ .- .

l l

Seabrook Station Radiological Environmental Data (January - December 1995)

I SAMPLE CONC. STD DEV. MDC

. TYPE STA. L8N END DATE NUCLIDE (pCi/cu.m) (pCi/cu.m) (pci/cu.m) f AP 04 24775 08/02/95 GR-D 2.33E-02 1.51E-03 3.30E-03

AP 05 24776 08/02/95 GR-B 2.63E-02 1.61E-03 3.49E-03

i AP 06 24777 08/02/95 GR-B 2.78E-02 1.62E-03 3.43E-03

AP 07 24778 08/02/95 GR-B 2.35E-02 1.53E-03 3.415-03

4

,' AP 08 24779 08/02/95 GR-B 2.22E-02 1.55E-03 3.48E-03

l AP 01 24908 08/09/95 GR-B 1.30E-02 1.29E-03 3.23E-03

AP 02 24909 08/09/95 GR-B 1.44E-02 1.35E-03 3.30E-03

AP 03 24910 08/09/95 GR-B 1.61E-02 1.35E-03 3.18E-03 *

! AP 04 24911 08/09/95 GR-B 1.43E-02 1.26E-03 3.02E-03

AP 05 24912 08/09/95 GR-B 1.60E-02 1.35E-03 3.20E-03

AP 06 24913 08/09/95 GR-B 1.46E-02 1.35E-03 3.30E-03

AP 07 24914 08/09/95 GR-B 1.28E-02 1.33E-03 3.31E-03

AP 08 24915 08/09/95 GR-B 1.21E-02 1.28E-03 3.27E-03

AP 01 25017 08/16/95 GR-B 1.34E-02 1.39E-03 3.57E-03

AP 02 25018 08/16/95 GR-B 1.68E-02 1.51E-03 3.67E-03

AP 03 25019 08/16/95 GR-B 1.85E-02 1.48E-03 3.56E-03

AP 04 25020 08/16/95 GR-B 1.85E-02 1.42E-03 3.32E-03 *

' AP 05 25021 08/16/95 GR-B 1.80E-02 1.48E-03 3.52E-03

AP 06 25022 08/16/95 GR-B 1.68E-02 1.45E-03 3.49E-03

AP 07 25023 08/16/95 GR-B 1.68E-02 1.45E-03 3.57E-03

AP 08 25024 08/16/95 'GR-B 1.63E-02 1.53E-03 3.80E-03

I AP 01 25123 08/23/95 GR-B 1.89E-02 1.45E-03 3.38E-03

AP 02 25124 08/23/95 GR-B 1.93E-02 1.48E-03 3.46E-03

AP 03 25125 08/23/95 GR-B 2.03E-02 1.50E-03 3.47E-03

AP 04 25126 08/23/95 GR-B 1.88E-02 1.39E-03 3.21E-03

AP 05 25127 08/23/95 GR-B 2.14E-02 1.49E-03 3.39E-03 *

, AP 06 25128 08/23/95 GR-B 1.96E-02 1.48E-03 3.44E-03 *

, AP 07 25129 08/23/95 GR-B 1.68E-02 1.44E-03 3.4SE-03

i AP 08 25130 08/23/95 GR-B 1.63E-02 1.40E-03 3.36E-03

AP 01 25234 08/30/95 GR-B 1.16E-02 1.32E-03 3.39E-03

3 AP 02 25235 08/30/95 GR-B 1.29E-02 1.35E-03 3.42E-03

AP 03 25236 08/30/95 GR-B 1.45E-02 1.42E-03 3.52E-03

AP 04 25237 08/30/95 GR-B 1.39E-02 1.31E-03 3.25E-03

AP 05 25238 08/30/95 GR-B 1.20E-02 1.30E-03 3.33E-03 *

, AP 06 25239 08/30/95 GR-B 1.25E-02 1.33E-03 3.42E-03 *

= AP 07 25240 08/30/95 GR-B 1.23E-02 1.35E-03 3.42E-03

AP 08 25241 08/30/95 GR-B 1.16E-02 1.40E-03 3.64E-03

AP 01 25308 09/06/95 GR-B 1.89E-02 1.44E-03 3.37E-03 *

AP 02 25309 09/06/95 GR-B 2.14E-02 1.51E-03 3.45E-03

AP 03 25310 09/06/95 GR-B 2.17E-02 1.50E-03 3.39E-03

AP 04 25311 09/06/95 GR-B 2.05E-02 1.40E-03 3.12E-03

AP 05 25312 09/06/95 GR-B 1.96E-02 1.44E-03 3.31E-03

AP 06 25313 09/06/95 GR-B 1.91E-02 1.46E-03 3.42E-03

AP 07 25314 09/06/95 GR-B 2.07E-02 1.51E-03 3.49E-03

l AP 08 25315 09/06/95 GR-B 1.46E-02 1.46E-03 3.66E-03

AP 01 25399 09/13/95 GR-B 1.19E-02 1.03E-03 2.65E-03

AP 02 25400 09/13/95 GR-B 1.60E-02 1.44E-03 3.52E-03

l AP 03 25401 09/13/95 GR-B 1.80E-02 1.50E-03 3.60E-03

AP 04 25402 09/13/95 GR-B 1.65E-02 1.39E-03 3.32E-03

l

Radioactivity detected (i.e., Concentration is > 3 std. Deviations).

l

1 1

1

_ . _ _ . _ -_ ~ _ _ . _ . _ . . . . _ _ _ . _ _.. _ _ ____ _ _ _ . _ _ _ _

seabrook Station Radiological Environmental Data (January - December 1995)

! SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE - (pci/cu.m) (pCi/cu.m) (pci/cu.m) 4 AP 05 25403 09/13/95 GR-B 1.76E-02 1.43E-03 3.37E-03

1 AP 06 25404 09/13/95 GR-B 1.835-02 1.47E-03 3.51E-03

AP 07 25405 09/13/95 GR-B 1.54E-02 1.41E-03 3.52E-03

AP 08 25406 09/13/95 GR-B 1.54E-02 1.38E-03 3.353-03

b AP 01 25526 09/20/95 GR-B 1.29E-02 1.34E-03 3.41E-03 *

AP 02 25527 09/20/95 GR-B 1.51E-02 1.39E-03 3.41E-03

AP 03 25528 09/20/95 GR-B 1.64E-02 1.42E-03 3.41E-03

AP 04 25529 09/20/95 GR-B 1.80E-02 1.34E-03 3.12E-03

l j AP 05 25530 09/20/95 GR-B 1.64E-02 1.37E-03 3.28E-03

AP 06 25531 09/20/95 GR-B 1.435-02 1.38E-03 3.45E-03

AP 07 25532 09/20/95 GR-B 1.67E-02 1.42E-03 3.46E-03

AP 08 25533 09/20/95 GR-B 1.42E-02 1.13E-03 2.70E-03

AP 01. 25630 09/27/95 GR-B 1.18E-02 1.35E-03 3.49E-03

l AP 02 25631 09/27/95 GR-B 1.41E-02 1.38E-03 3.49P-03 *

~ AP 03 25632 09/27/95 GR-B 1.255-02 1.42E-03 3.625-03

AP 04 25633 09/27/95 GR-B 1.30E-02 1.31E-03 3.28E-03

AP 05 25634 09/27/95 GR-B 1.03E-02 1.26E-03 3.350-03

AP 06 25635 09/27/95 GR-B 1.20E-02 1.28E-03 3.2815-03

AP 07 25636 09/27/95 GR-B 1.48E-02 1.42E-03 3.54E-03

l- 1.14E-02 1.34E-03 3.53E-03

l AP 08 25637 09/27/95 GR-B AP 01 25795 10/04/95 GR-B 2.24E-02 1.50E-03 3.33E-03 *

! AP 02 25796 10/04/95 GR-B 2.25E-02 1.48E-03 3.29E-03

AP 03 25797 10/04/95 GR-B 2.59E-02 1.61E-03 3.50E-03

1.39E-03 l AP 04 25798 10/04/95 GR-B 2.19E-02 3.02E-03

l AP 05 25799 10/04/95 GR-B 2.53E-02 1.51E-03 3.20E-03

AP 06 25800 10/04/95 GR-B 1.96E-02 1.68E-03 4.05E-03

AP 07 25801 10/04/95 GR-B 2.56E-02 1.56E-03 3.37E-03

2.14E-02 1.46E-03 AP 08 25802 10/04/95 GR-B 3.31E-03

l AP 01 25911 10/11/95 GR-B 8.81E-03 1.26E-03 3.41E-03 *

, AP 02 25912 10/11/95 GR-B 7.75E-03 1.25E-03 3.40E-03

j AP 03 25913 10/11/95 GR-B 8.93E-03 1.27E-03 3.45E-03

j AP 04 25914 10/11/95 GR-B 9.72E-03 1.22E-03 3.22E-03 *

~

AP 05 25915 10/11/95 GR-B 1.24E-02 1.32E-03 3.33E-03

j AP 06 25916 10/11/95 GR-B 1.17E-02 1.32E-03 3.39E-03 * ,

AP 07 25917 10/11/95 GR-B 8.34E-03 1.28E-03 3.52E-03

l j AP 08 25918 10/11/95 GR-B 9.51E-03 1.29E-03 3.49E-03

I 1 AP 01 26044 10/18/95 GR-B 2.66E-02 1.59E-03 3.41E-03

1 AP 02 26045 10/18/95 GR-B 3.42E-02 1.72E-03 3.43E-03

AP 03 26046 10/18/95 GR-B 4.03E-02 1.86E-03 3.57E-03

AP 04 26047 10/18/95 GR-B 3.47E-02 1.65E-03 3.16E-03 *

AP 05 26048 10/18/95 GR-B 3.88E-02 1.75E-03 3.32E-03

1 AP. 06- 26049 10/18/95 GR-B 3.61E-02 1.*i4E-03 3.43E-03

l

,J AP 07 26050 10/18/95 GR-B 3.19E-02 1.67E-03 3.40E-03

AP 08 26051 10/18/95 GR-B 2.81E-02 1.61E-03 3.40E-03 *

< AP 01 26186 10/25/95 GR-B 2.08E-02 1.51E-03 3.43E-03 *

< AP- 02 26187 10/25/95 GR-B 2.58E-02 1.57E-03 3.43E-03

AP 03 26188 10/25/95 GR-B 2.64E-02 1.65E-03 3.58E-03

2.60E-02 1.50E-03 AP 04 26189 10/25/95 GR-B 3.18E-03

AP 05 26190 10/25/95 GR-B 2.35E-02 1.50E-03 3.31E-03

1 l

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

, e 4

- _ - - - - . .- -. - _ - - . - . -. __ = .. - -- . -_ -

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pC1/cu.m) (pCi/cu.m) (pC1/cu.m)

~~--------~~~-------------------------~~~---------~~-------~~~

AP 06 26191 10/25/95 GR-B 2.49E-02 1.59E-03 3.46E-03

AP 07 26192 10/25/95 GR-B 2.23E-02 1.54E-03 3.47E-03

l AP 08 26193 10/25/95 GR-B 2.27E-02 1.55E-03 3.46E-03

l AP 01 26345 11/01/95 GR-B 1.08E-02 1.31E-03 3.44E-03

AP O2 26346 11/01/95 GR-B 1.45E-02 1.37E-03 3.46E-03

AP 03 26347 11/01/95 GR-B 1.64E-02 1.48E-03 3.65E-03

AP 04 26348 11/01/95 GR-B 1.55E-02 1.33E-03 3.25E-03

AP 05 26349 11/01/95 GR-B 1.54E-02 1.35E-03 3.31E-03

AP 06 26350 11/01/95 GR-B 1.59E-02 1.42E-03 3.50E-03

AP 07 26351 11/01/95 GR-B 1.25E-02 1.36E-03 3.49E-03

AP 08 26352 11/01/95 GR-B 1.35E-02 1.37E-03 3.48E-03

AP 01 26496 11/08/95 GR-B 1.67E-02 1.43E-03 3.45E-03

AP 02 26497 11/08/95 GR-B 1.99E-02 1.49E-03 3.41E-03

AP 03 26498 11/08/95 GR-B 1.96E-02 1.50E-03 3.49E-03

AP 04 26499 11/08/95 GR-B 2.22E-02 1.42E-03 3.12E-03

AP 05 26500 11/08/95 GR-B 1.87E-02 1.43E-03 3.34E-03

AP 06 26501 11/08/95 GR-B 1.49E-02 1.39E-03 3.39E-03

AP 07 26502 11/08/95 GR-B 1.78E-02 1.51E-03 3.56E-03

l AP 08 26503 11/Ob/95 GR-B 1.48E-02 1.40E-03 3.48E-03

l AP 01 26564 11/15/95 GR-B 1.01E-02 1.29E-03 3.41E-03

l AP 02 26565 11/15/95 GR-B 1.39E-02 1.34E-03 3.31E-03

j 1.83E-02 1.52E-03 AP 03 26566 11/15/95 GR-B 3.63E-03

AP 04 26567 11/15/95 GR-B 1.45E-02 1.26E-03 3.06E-03

AP 05 26568 11/15/95 GR-B 1.66E-02 1.33E-03 3.18E-03

AP 06 26569 11/15/95 GR-B 1.62E-02 1.43E-03 3.43E-03

AP 07 26570 11/15/95 GR-B 1.26E-02 1.32E-03 3.37E-03

AP 08 26571 11/15/95 GR-B 1.26E-02 1.36E-03 3.46E-03

1 AP 01 26706 11/22/95 GR-B 1.29E-02 1.31E-03 3.34E-03

j AP 02 26707 11/22/95 GR-B 1.56E-02 1.34E-03 3.27E-03

AP 03 26708 11/22/95 GR-B 1.72E-02 1.53E-03 3.74E-03

AP 04 26709 11/22/95 GR-B 1.47E-02 1.27E-03 3.10E-03

AP 05 26710 11/22/95 GR-B 1.50E-02 1.35E-03 3.28E-03

AP 06 26711 11/22/95 GR-B 1.74E-02 1.45E-03 3.45E-03

AP 07 26712 11/22/95 GR-B 1.57E-02 1.42E-03 3.47E-03

i' AP 08 26713 11/22/95 GR-B 1.30E-02 1.36E-03 3.44E-03

AP 01 26827 11/30/95 GR-B 2.13E-02 1.38E-03 3.09E-03

AP 02 26828 11/30/95 GR-B 2.55E-02 1.41E-03 2.97E-03

i AP 03 26829 11/30/95 GR-B 2.39E-02 1.46E-03 3.19E-03

AP 04 26830 11/30/95 GR-B 2.41E-02 1.34E-03 2.79E-03

AP 05 26831 11/30/95 GR-B 2.60E-02 1.40E-03 2.90E-03

AP 06 26832 11/30/95 GR-B 3.00E-02 1.52E-03 3.07E-03

AP 07 26833 11/30/95 GR-B 2.11E-02 1.38E-03 3.06E-03

AP 08 26834 11/30/95 GR-B 2.44E-02 1.42E-03 3.06E-03

AP 01 26925 12/06/95 GR-B 1.61E-02 1.57E-03 3.91E-03

AP 02 26926 12/06/95 GR-B 1.63E-02 1.53E-03 3.78E-03

AP 03 26927 12/06/95 GR-B 2.17E-02 1.81E-03 4.28E-03

AP 04 26928 12/06/95 GR-B 1.57E-02 1.52E-03 3.76E-03

AP 05 26929 12/06/95 GR-B 2.03E-02 1.63E-03 3.82E-03

AP 06 26930 12/06/95 GR-B 1.99E-02 1.66E-03 3.97E-03 *

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations). l

Seabrook Station Radiological Environmental Data (January . December 1995) 8 AMPLE CONC. STD DEV. KDC TYPE STA. LSN END DATE NUCLIDE (pCi/cu.m) (pci/cu.m) (pci/cu.m)

AP 07 26931 12/06/95 GR-B 1.99E-02 1.69E-03 4.03E-03

AP 08 26932 12/06/95 GR-B 1.76E-02 1.61E-03 3.94E-03

AP 01 26988 12/13/95 GR-B 2.09E-02 1.50E-03 3.50E-03

AP 02 26989 12/13/95 GR-B 2.32E-02 1.49E-03 3.33E-03

AP 03 26990 12/13/95 GR-B 2.22E-02 1.59E-03 3.67E-03

AP 04 26991 12/13/95 GR-B 2.54E-02 1.49E-03 3.21E-03

AP 05 26992 12/13/95 GR-B 3.14E-02 1.61E-03 3.30E-03

AP 06 26993 12/13/95 GR-B 2.95E-02 1.66E-03 3.525-03

AP 07 26994 12/13/'J5 GR-B 2.233-02 1.53E-03 3.50E-03

AP 08 26995 12/13/%'5 GR-B 2.42E-02 1.58E-03 3.55E-03

AP 01 27121 12/19/95 GR-B 1.61E-02 1.68E-03 4.23E-03

AP 02 27122 12/19/95 GR-B 1.89E-02 1.62E-03 3.97E-03 *

, AP 03 27123 12/19/95 GR-B 1.69E-02 1.76E-03 4.50E-03

AP 04 27124 12/19/95 GR-B 1.84E-02 1.59E-03 3.87E-03 *

' AP 05 27125 12/19/95 GR-B 2.18E-02 1.68E-03 4.01E-03

AP 06 27126 12/19/95 GR-B 1.88E-02 1.71E-03 4.28E-03

AP 07 27127 12/19/95 GR-B 2.16E-02 1.77E-03 4.28E-03

AP 08 27128 12/19/95 GR-B 1.88E-02 1.72E-03 4.28E-03

AP 01 27191 12/26/95 GR-B 5.15E-03 1.20E-03 3.42E-03

AP 02 27192 12/26/95 GR-B 8.43E-03 1.24E-03 3.32E-03

AP 03 27193 12/26/95 GR-B 9.92E-03 1.37E-03 3.68E-03

AP 04 27194 12/26/95 GR-B 6.76E-03 1.13E-03 3.16E-03

AP 05 27195 12/27/95 GR-B 8.99E-03 1.13E-03 3.00E-03

AP 06 T,7196 12/27/95 GR-B 8.05E-03 1.12E-03 3.04E-03

l AP 07 27197 12/26/95 GR-B 8.15E-03 1.27E-03 3.46E-03

l AP OS 27198 12/26/95 GR-B 5.40E-03 1.22E-03 3.46E-03

I l

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

4

- - - , , - - n ., - - . - . , _- ---.

r---. ,- r

I seabrook Station Radiological Environmental Data (January - December 1995)

- 8 AMPLE CONC. STD DEV. MDC TYPE STA. LSN END DATE NUCLIDE (pcl/cu.m) (pci/cu.m) (pci/cu.m)

Radiolodines (Charcoal Filters)

CF 01 20970 01/04/95 I-131 2.51E-02 1.33E-02 2.87E-02 CF 02 20971 01/04/95 I-131 1.56E-02 1.07E-02 2.37E-02 CF 03 20972 01/04/95 I-131 3.35E-03 1.27E-02 3.60E-02 CF 04 20973 01/04/95 I-131 -3.43E-03 1.62E-02 4.87E-02 CF 05 20974 01/04/95 I-131 1.02E-02 1.16E-02 2.99E-02 CF 06 20975 01/04/95 I-131 -2.35E-02 1.21E-02 4.41E-02 1.26E-02 4.17E-02 ]

CF 07 20976 01/04/95 I-131 -1.23E-02 3.98E-02 CF 08 20977 01/04/95 I-131 9.94E-03 1.47E-02 CF 01 21101 01/11/95 I-131 -1.64E-02 1.13E-02 3.78E-02 CF 02 21102 01/11/95 I-131 -1.41E-02 9.76E-03 3.31E-02 CF 03 21103 01/11/95 I-131 -1.09E-02 1.12E-02 3.63E-02 CF 04 21104 01/11/95 I-131 -3.18E-03 1.33E-02 3.99E-02 CF 05 21105 01/11/95 I-131 1.10E-02 1.10E-02 2.89E-02 CF 06 21106 01/11/95 I-131 0.00E+00 1.26E-02 3.71E-02 CF 07 _21107 01/11/95 I-131 7.41E-03 1.42E-02 3.98E-02 CF 08 21108 01/11/95 I-131 0.00E+00 1.15E-02 3.38E-02 CF 01 21246 01/18/95 I-131 1.32E-02 1.32E-02 3.40E-02 CF 02 21247 01/18/95 I-131 -6.88E-03 1.20E-02 3.77E-02 CF 03 21248 01/18/95 I-131 -1.98E-02 1.25E-02 4.34E-02 CF 04 21249 01/18/95 I-131 7.70E-03 1.21E-02 3.23E-02 CF 05 21250 01/18/95 I-131 1.31E-02 1.16E-02 2.90E-02 CF 06 21251 01/18/95 I-131 -1.02E-03 1.06E-02 3.16E-02 CF 07 21252 01/18/95 I-131 3.07E-03 1.16E-02 3.29E-02 CF 08 21253 01/18/95 I-131 1.03E-03 1.18E-02 3.44E-02 CF 01 21329 01/25/95 I-131 1.99E-03 1.01E-02 2.92E-02 CF 02 21330 01/25/95 I-131 -7.83E-03 8.08E-03 2.58E-02 CF 03 21331 01/25/95 I-131 4.45E-03 9.34E-03 2.64E-02 CF 04 21332 01/25/95 I-131 -3.13E-03 1.04E-02 3.14E-02 CF 05 21333 01/25/95 I-131 -1.18E-02 9.03E-03 2.92E-02 CF 06 21334 01/25/95 I-131 -4.59E-03 1.15E-02 3.48E-02 CF 07 21335 01/25/95 I-131 -1.57E-03 1.06E-02 3.15E-02 CF 08 21336 01/25/95 I-131 -4.09E-03 9.51E-03 2.89E-02 CF 01 21460 02/01/95 I-131 7.35E-03 1.06E-02 2.93E-02 CF 02 21461 02/01/95 I-131 7.58E-03 8.93E-03 2.41E-02 CF 03 21462 02/01/95 I-131 -1.27E-02 1.02E-02 3.31E-02 CF 04 21463 02/01/95 I-131 0.00E+00 1.09E-02 3.21E-02 CF 05 21464 02/01/95 I-131 1.08E-03 7.76E-03 2.25E-02 CF 06 21465 02/01/95 I-131 8.69E-03 9.78E-03 2.64E-02 CF 07 21466 02/01/95 I-131 0.00E+00 1.02E-02 3.00E-02 CF 08 21467 02/01/95 I-131 -7.52E-03 1.02E-02 3.18E-02 CF 01 21611 02/08/95 I-131 -1.41E-02 8.81E-03 3.10E-02 CF 02 21612 02/08/95 I-131 5.40E-03 1.04E-02 2.87E-02 CF 03 21613 02/08/95 I-131 1.24E-02 1.06E-02 2.67E-02 CF .04 21614 02/08/95 I-131 0.00E+00 1.13E-02 3.31E-02 CF 05 21615 02/08/95 I-131 -3.56E-02 1.50E-02 5.63E-02 CF 06 21616 02/08/95 I-131 1.04E-02 9.39E-03 2.34E-02 CF 07 21617 02/08/95 I-131 -3.99E-03 9.61E-03 2.97E-02 CF 08 21618 02/08/95 I-131 -7.95E-03 1.04E-02 3.31E-02

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

l

[

seabrook Station Radiological Environmental Data i (January - December 1995)

SAMPLE CONC. STD DEV. MDC

- $f... 1___..b$ ___$ S.S$[f_.. SbfS ...b$ $$1II__ $$ $$1$ .. $ $$1$

I CF 01 21711 02/14/95 I-131 -1.51E-02 1.375-02 4.47E-02 CF 02 21712 02/14/95 I-131 -1.15E-02 1.415-02 4.45E-02 CF 03 21713 02/15/95 I-131 -7.63E-03 1.05E-02 3.34E-02 CF 04 21714 02/15/95 I-131 1.38E-02 1.33E-02 3.51E-02

, CF 05 21715 02/15/95 I-131 -6.59E-03 1.39E-02 4.27F-02

, CF 06 21716 02/14/95 I-131 1.48E-02 1.57E-02 4.19E-02 CF 07 21717 02/14/95 I-131 -3.00E-03 1.62E-02 4.83E-02 3

CF 08 21718 02/14/95 I-131 -2.78E-02 1.22E-02 4.43E-02 CF 01 21793 02/22/95 I-131 2.08E-02 1.08E-02 2.50E-02 CF 02 21794 02/22/95 I-131 5.285-03 8.46E-03 2.30E-02 CF 03 21795 02/22/95 I-131 -1.56E-03 1.22E-02 3.64E-02 CF 04 21796 02/22/95 I-131 0.00E+00 1.20E-02 3.54E-02 CF 05 21797 02/22/95 I-131 -1.05E-02 9.01E-03 2.99E-02 CF 06 21798 02/22/95 I-131 1.41E-02 1.075-02 2.70E-02 CF 07 21799 02/22/95 I-131 -4.27E-03 9.06E-03 2.81E-02

'CF 08 21800 02/22/95 I-131 -2.26E-02 8.75E-03 3.28E-02 CF 01 21847 03/01/95 I-131 -1.18E-02 1.06E-02 3.615-02 CF 02 21848 03/01/95 I-131 -3.02E-03 1.06E-02 3.24E-02 CF 03 21849 03/01/95 I-131 -7.84E-03 1.22E-02 3.90E-02 CF 04 21850 03/01/95 I-131 -1.17E-03 1.51E-02 4.49E-02 CF 05 21851 03/01/95 I-131 -9.68E-04 1.00E-02 2.99E-02 CF 06 21852 03/01/95 I-131 -7.73E-03 1.35E-02 4.24E-02 CF 07 21853 03/01/95 I-131 4.70E-04 9.44E-03 2.77E-02 CF 08 21854 03/01/95 I-131 2.51E-02 1.69E-02 4.19E-02 CF 01 21965 03/08/95 I-131 1.72E-02 1.21E-02 2.98E-02 CF 02 21966 03/08/95 I-131 -1.29E-02 7.72E-03 2.80E-02 CF 03 21967 03/08/95 I-131 -8.60E-03 1.02E-02 3.30E-02 CF 04 21968 03/08/95 I-131 -1.94E-02 9.97E-03 3.64E-02 CF 05 21969 03/08/95 I-131 -7.75E-03 8.13E-03 2.70E-02 CF 06 21970 03/08/95 I-131 -2.66E-03 1.16E-02 3.50E-02 CF 07 21971 03/08/95 I-131 3.51E-03 1.15E-02 3.27E-02 CF 08 21972 03/08/95 I-131 -5.20E-03 1.10E-02 3.42E-02 l

CF 01 22131 03/15/95 I-131 7.18E-03 1.06E-02 2.87E-02 CF 02 22132 03/15/95 I-131 -2.02E-02 7.46E-03 2.96E-02 CF 03 22133 03/15/95 I-131 -1.77E-02 9.10E-03 3.32E-02 CF 04 22134 03/15/95 I-131 -7.71E-03 8.26E-03 2.76E-02 CF 05 22135 03/15/95 I-131 -4.91E-03 1.13E-02 3.49E-02 CF 06 22136 03/15/95 I-131 -1.12E-02 1.23E-02 3.93E-02 CF 07 22137 03/15/95 I-131 1.24E-02 1.32E-02 3.52E-02 CF 08 22138 03/15/95 I-131 3.21E-03 1.22E-02 3.50E-02 CF 01 22217 03/22/95 I-131 5.28E-03 8.39E-03 2.96E-02 CF 02 22218 03/22/95 I-131 -1.25E-02 7.81E-03 3.41E-02 CF 03 22219 03/22/95 I-131 -2.34E-04 7.01E-03 2.78E-02 CF 04 22220 03/22/95 I-131 -6.37E-03 9.03E-03 3.66E-02 CF 05 22221 03/22/95 I-131 6.49E-03 9.91E-03 3.45E-02 CF 06 22222 03/22/95 I-131 1.02E-03 9.84E-03 3.60E-02 CF 07 22223 03/22/95 I-131 6.88E-03 1.03E-02 3.55E-02 CF 08 22224 03/22/95 I-131 -7.09E-03 8.93E-03 3.59E-02

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i j Seabrook Station Radiological Environmental Data (January - December 1995) 4

l. SAMPLE CONC. STD DEV. MDC l TYPE STA. L8N END DATE NUCLIDE (pCi/cu.m) (pC1/cu.m) (pC1/cu.m) i .....................................-- .....--.........--...--......--.....---

.A CF 01 22344 03/29/95 I-131 9.49E-03 7.94E-03 2.59E-02 CF 02 22345 03/29/95 I-131 -1.385-02 7.12E-03 2.99E-02 CF 03 22346 03/29/95 I-131 8.68E-03 8.41E-03 2.79E-02 i -

CF 04 22347 03/29/95 I-131 -9.54E-04 7.82E-03 2.87E-02 CF 05 22348 03/29/95 I-131 5.05E-04 9.59E-03 3.41E-02 CF 06 22349 03/29/95 I-131 2.35E-02 8.35E-03 2.25E-02 CF 07. 22350 03/29/95 I-131 -4.19E-03 7.56E-03 2.90E-02 CF 08 22351 03/29/95 I-131 -6.22E-03 8.01E-03 3.09E-02 CF 01 22404 04/05/95 I-131- -1.01E-02 9.78E-03 4.09E-02 i CF 02 22405 04/05/95 I-131 5.14E-03 1.09E-02 3.88E-02

~

CF 03 22406 04/05/95 I-131 -3.275-03 9.83E-03 3.93E-02

, CF 04 22407 04/05/95 I-131 3.66E-03 1.11E-02 4.02E-02 CF 05 22408 04/05/95 I-131 5.87E-03 1.02E-02 3.64E-02 CF- 06 22409 04/05/95 I-131 -1.18E-02 6.96E-03 3.46E-02 3.88E-02 CF 07 22410 04/05/95 I-131 -7.89E-03 9.21E-03 CF 08 22411 04/05/95 I-131 1.64E-03 9.25E-03 3.50E-02 CF 01 22631 04/12/95 I-131 9.46E-03 1.01E-02 3.48E-02

- CF 02 22632 04/12/95 I-131 9.21E-04 9.79E-03 3.78E-02 i CF 03 22633 04/12/95 I-131 1.25E-02 1.16E-02 3.89E-02 CF 04 22634 04/12/95 I-131 -3.49E-03 1.08E-02 4.13E-02 CF 05 22635 04/12/95 I-131 8.33E-03 9.85E-03 3.42E-02 i

CF 06 22636 04/12/95 I-131 2.465-03 1.08E-02 3.97E-02 CF 07 22637 04/12/95 I-131 1.74E-02 9.97E-03 3.03E-02 CF 08 22638 04/12/95 I-131 -4.91E-03 9.93E-03 3.96E-02 CF 01 22817 04/19/95 I-131 8.52E-03 1.01E-02 3.50E-02 f 6.68E-03 7.42E-03 2.62E-02 d

CF 02 22818 04/19/95 I-131 4.49E-02 CF 03 22819 04/19/95 I-131 -1.11E-02 1.05E-02 CF 04 22820 04/19/95 I-131 -2.04E-02 1.02E-02 4.62E-02

CF 05 22821 04/19/95 I-131 1.38E-02 1.07E-02 3.47E-02 CF 06 22822 04/19/95 I-131 8.38E-03 1.27E-02 4.42E-02 CF 07 22823 04/19/95 I-131 -4.135-04 1.23L-02 4.61E-02 j CF 08 22824 04/19/95 I-131 1.48E-02 9.33E-03 2.89E-02

! CF 01 22928 04/26/95 I-131 -1.59E-02 1.06E-02 4.31E-02 CF 02 22929 04/26/95 I-131 1.44E-02 1.01E-02 3.22E-02

CF 03 22930 04/26/95 I-131 1.05E-02 1.04E-02 3.50E-02 2 CF 04 22931 04/26/95 I-131 -1.91E-02 9.57E-03 4.12E-02

j. CF 05 22932 04/26/95 I-131 1.33E-02 1.10E-02 3.59E-02 CF 06 22933 04/26/95 I-131 6.85E-03 7.08E-03 2.44E-02

j. CF 07 22934 04/26/95 I-131 -2.72E-02 1.13E-02 4.80E-02

CF 08 22935 04/26/95 I-131 -3.43E-04 1.05E-02 3.85E-02 l CF 01 23016 05/03/95 I-131 7.48E-03 1.08E-02 3.93E-02 i CF 02 23017 05/03/95 I-131 0.00E+00 8.25E-03 3.54E-02 j CF 03 23018 05/03/95 I-131 -1.01E-02 1.17E-02 5.19E-02 L CF 04 23019 05/03/95 I-131 1.19E-02 1.23E-02 4.23E-02 CF 05 23020 05/03/95 I-131 -4.51E-03 8.70E-03 3.91E-02 CF 06 23021 05/03/95 I-131 -1.23E-02 1.27E-02 5.52E-02 CF 07 23022 05/03/95 I-131 3.08E-03 1.07E-02 4.20E-02 CF 08 23023 05/03/95 I-131 2.38E-03 9.28E-03 3.73E-02

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

1

A 4

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC l TYPE STA. L8N END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m) l .............................................................................. j l

CF 01 23251 05/10/95 I-131 2.19E-03 8.56E-03 3.44E-02 l CF 02 23252 05/10/95 I-131 1.60E-02 1.17E-02 3.765-02 l CF 03 23253 05/10/95 I-131 -1.88E-02 1.11E-02 5.28E-02 CF 04 23254 05/10/95 I-131 2.25E-02 1.21E-02 3.54E-02 l 4 CF 05 23255 05/10/95 I-131 -2.08E-03 1.06E-02 4.275-02 ,

CF 06 23256 05/10/95 I-131 1.47E-02 9.81E-03 3.07E-02 i CF 07 23257 05/10/95 I-131 -2.08E-02 1.10E-02 5.26E-02 i CF 08 23258 05/10/95 I-131 -1.56E-02 9.16E-03 4.56E-02 l CF 01 23429 05/17/95 I-131 3.68E-03 8.63E-03 3.16E-02 f -9.99E-03 6.66E-03 3.02E-02 CF O2 23430 05/17/95 I-131 3.49E-02

, CF 03 23431 05/17/95 I-131 1.79E-03 9.30E-03 l CF 04 23432 05/17/95 I-131 1.74E-03 9.36E-03 3.50E-02 i CF 05 23433 05/17/95 I-131 -7.90E-03 8.32E-03 3.36E-02 CF 06 23434 05/17/95 I-131 -3.30E-03 9.90E-03 3.79E-02 CF 07 23435 05/17/95 I-131 1.16E-02 8.60E-03 2.88E-02 CF 08 23436 05/17/95 I-131 4.72E-03 8.17E-03 2.96E-02 CF 01 23498 05/23/95 I-131 1.84E-02 1.09E-02 3.45E-02 CF 02 23499 05/23/95 I-131 2.35E-02 1.39E-02 4.47E-02

. CF 03 23500 05/24/95 I-131 -1.30E-02 8.61E-03 4.12E-02 CF 04 23501 05/24/95 I-131 -7.40E-03 1.02E-02 4.30E-02 CF 05 23502 05/23/95 I-131 -6.52E-03 1.24E-02 5.10E-02 l CF 06 23503 05/23/95 I-131 -7.97E-03 1.34E-02 5.45E-02

CF 07 23504 05/23/95 I-131 -8.61E-03 1.25E-02 5.20E-02 l CF 08 23505 05/23/95 I-131 8.26E-03 1.32E-02 4.80E-02 i CF 01 23688 05/31/95 I-131 -1.97E-02 9.12E-03 3.85E-02 CF 02 23689 05/31/95 I-131 1.36E-02 9.87E-03 3.30E-02

, CF 03 23690 05/31/95 I-131 4.86E-03 9.31E-03 3.36E-02 i CF 04 23691 05/31/95 I-131 -8.05E-03 8.72E-03 3.52E-02 i CF 05 23692 05/31/95 I-131 2.91E-03 8.49E-03 3.10E-02 l CF 06 23693 05/31/95 I-131 -3.82E-03 8.55E-03 3.25E-02 i CF 07 23694 05/31/95 I-131 -1.54E-02 1.03E-02 4.02E-02 CF 08 23695 05/30/95 I-131 -1.45E-03 9.04E-03 3.40E-02 1 i CF 01 23830 06/07/95 I-131 -6.06E-03 7.03E-03 3.11E-02 l CF 02 23831 06/07/95 I-131 1.07E-02 1.00E-02 3.37E-02 i CF 03 23832 06/07/95 I-131 -2.07E-02 8.33E-03 4.18E-02

CF 04 23833 06/07/95 I-131 -2.24E-03 9.14E-03 3.63E-02 CF 05 23834 06/07/95 I-131 -8.05E-04 9.90E-03 3.79E-02 CF 06 23835 06/07/95 I-131 -5.77E-03 9.44E-03 3.80E-02 CF 07 23836 06/07/95 I-131 -5.52E-03 8.50E-03 3.54E-02 j

CF 08 23837 06/07/95 I-131 9.43E-03 8.95E-03 3.00E-02 CF 01 23961 06/14/95 I-131 1.16E-02 8.52E-03 2.85E-02 CF 02 23962 06/14/95 I-131 3.69E-03 1.01E-02 3.71E-02 4 CF 03 23963 06/14/95 I-131 9.51E-03 9.13E-03 3.17E-02 CF 04 23964 06/14/95 I-131 -8.87E-03 1.40E-02 5.44E-02 CF 05 23965 06/14/95 I-131 1.78E-03 9.92E-03 3.69E-02 CF 06 23966 06/14/95 I-131 1.58E-02 9.77E-03 3.18E-02

'l 3.61E-03 3.63E-02 CF 07 23967 06/14/95 I-131 9.89E-03 CF 08 23968 06/14/95 I-131 -6.65E-03 1.06E-02 4.15E-02 j

Radioactivity detected (i.e.', Concentration is > 3 Std. Deviations).

seabrook station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYFE STA. LSN END DATE NUCLIDE (pC1/cu.m) (pci/cu.m) (pci/cu.m)

~~~~-----~~-------~~~-------------------------------------

CF 01 24023 06/21/95 I-131 -6.89E-04 8.97E-03 3.40E-02 CF 02 24024 06/21/95 I-131 1.723-03 8.95E-03 3.35E-02 CF 03 24025 06/21/95 I-131 9.57E-03 1.033-02 3.61E-02 CF 04 24026 06/21/95 I-131 1.04E-02 7.74E-03 2.60E-02 CF 05 24027 06/21/95 I-131 -3.17E-03 7.80E-03 3.135-02 CF 06 24028 06/21/95 I-131 -4.85E-03 9.29E-03 3.63E-02 CF 07 24029 06/21/95 I-131 6.35E-03 8.10E-03 2.88E-02 CF 08 24030 06/21/95 I-131 -7.99E-03 7.49E-03 3.18E-02 CF 01 24199 06/28/95 I-131 -2.32E-02 8.66E-03 4.36E-02 CF 02 24200 06/28/95 I-131 1.27E-02 7.62E-03, 2.36E-02 CF 03 24201 06/28/95 I-131 0.00E+00 1.09E-02 4.30E-02 CF 04 24202 06/28/95 I-131 -4.76E-03 1.01E-02 4.15E-02 CF 05 24203 06/28/95 I-131 -7.75E-03 1.06E-02 4.42E-02 CF 06 24204 06/28/95 I-131 6.69E-03 1.04E-02 3.80E-02 CF 07 24205 06/28/95 I-131 1.90E-02 1.01E-02 3.11E-02 CF 08 24206 06/28/95 I-131 7.17E-03 9.26E-03 3.37E-02 CF 01 24232 07/05/95 I-131 -1.85E-02 9.25E-03 4.35E-02 CF 02 24233 07/05/95 I-131 -1.11E-02 8.21E-03 3.91E-02 CF 03 24234 07/05/95 I-131 5.52E-03 1.35E-02 5.01E-02 CF 04 24235 07/05/95 I-131 -1.03E-02 1.13E-02 4.75E-02 CF 05 24236 07/05/95 I-131 9.86E-03 9.86E-03 3.48E-02 CF 06 24237 07/05/95 I-131 -1.03E-03 8.21E-03 3.38E-02 CF 07 24238 07/05/95 I-131 -1.32E-02 1.21E-02 5.13E-02 CF 08 24239 07/05/95 I-131 2.61E-03 1.14E-02 4.36E-02 CF 01 24424 07/12/95 I-131 5.26E-03 1.00E-02 3.70E-02 CF 02 24425 07/12/95 I-131 -7.29E-03 9.60E-03 4.06E-02 CF 03 24426 07/12/95 I-131 4.47E-03 9.99E-03 3.72E-02 CF 04 24427 07/12/95 I-131 1.84E-02 8.23E-03 2.31E-02 CF 05 24428 07/12/95 I-131 -1.35E-02 1.11E-02 4.70E-02 CF 06 24429 07/12/95 I-131 -2.11E-02 9.09E-03 4.42E-02 CF 07 24430 07/12/95 I-131 -1.84E-02 1.08E-02 4.76E-02 CF 08 24431 07/12/95 I-131 -2.42E-02 1.08E-02 5.02E-02 CF 01 24607 07/19/95 I-131 -4.50E-03 7.31E-03 2.91E-02 CF 02 24608 07/19/95 I-131 3.34E-03 7.41E-03 2.67E-02 CF 03 24609 07/19/95 I-131 2.72E-04 7.30E-03 2.72E-02 CF 04 24610 07/19/95 I-131 4.46E-03 6.98E-03 2.45E-02 CF 05 24611 07/19/95 I-131 -6.43E-03 7.48E-03 3.02E-02 CF 06 24612 07/19/95 I-131 -1.73E-03 8.37E-03 3.14E-02 CF 07 24613 07/19/95 I-131 -1.22E-02 7.88E-03 3.34E-02 CF 08 24614 07/19/95 I-131 3.59E-03 7.60E-03 2.73E-02 CF 01 24697 07/26/95 I-131 -2.17E-03 8.11E-03 3.01E-02 CF 02 24698 07/26/95 I-131 -2.01E-02 7.74E-03 3.29E-02 CF 03 24699 07/26/95 I-131 1.41E-03 8.59E-03 3.098-02 CF 04 24700 07/20/95 I-131 -6.43E-02 8.96E-02 0.34E+00 CF 05 24701 07/26/95 I-131 8.92E-03 8.92E-03 3.05E-02 CF 06 24702 07/26/95 I-131 -6.92E-03 9.23E-03 3.49E-02 CF 07 24703 07/26/95 I-131 1.60E-02 8.29E-03 2.64E-02 CF 08 24704 07/26/95 I-131 7.33E-03 8.73E-03 3.02E-02

Radioactivity detected (i.e., Concentration is > 3 std. Deviations). ,

Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N- END DATE NUCLIDE (pCi/cu.m) (pci/cu.m) (pci/cu.m)

~~-~~~----~~~------------~~--~~----------------~~~-~~---------~~~~------------

CF 01 24764 08/02/95 I-131 -8.905-03 5.89E-03 2.92E-02 CF 02 24765 08/02/95 I-131 -9.53E-03 9.29E-03 3.89E-02 CF 03 24766 08/02/95 I-131 6.12E-03 6.80E-03 2.40E-02 CF 04 24767 08/02/95 I-131 6.96E-03 7.52E-03 2.61E-02 CF 05 24768 08/02/95 I-131 -8.98E-03 9.71E-03 3.98E-02 CF 06 24769 08/02/95 I-131 2.12E-02 1.06E-02 3.' 11E-02 CF 07 24770 08/02/95 I-131 3.78E-03 7.66E-03 2.83E-02 CF 08 24771 08/02/95 I-131 3.09E-03 8.52E-03 '3.16E-02 CF 01 24900 08/09/95 I-131 1.12E-02 8.90E-03 3.01E-02 CF 02 24901 03/G9/95 I-131 -1.31E-02 7.70E-03 3.40E-02 CF 03 24902 08/09/95 I-131 1.81E-03 8.56E-03 3.19E-02 CF 04 2490' 08/09/95 I-131 0.00E+00 7.73E-03 2.95E-02 CF 05 24904 08/09/95 I-131 -6.42E-03 9.08E-03 3.60E-02 CF 06 24905 08/09/95 I-131 -1.01E-02 9.49E-03 3.86E-02 CF 07 24906 08/09/95 I-131 3.60E-04 9.71E-03 3.64E-02 r CF 08 24907 08/09/95 I-131 1.32E-02 9.06E-03 3.00E-02 CF 01 25009 08/16/95 I-131 2.69E-04 8.72E-03 3.16E-02 CF 02 25010 08/16/95 I-131 6.95E-03 8.18E-03 2.78E-02 CF 03 25011 08/16/95 I-131 -8.26E-03 9.64E-03 3.67E-02 CF 04 25012 08/16/95 I-131 5.065-03 7.54E-03 2.61E-02 CF 05 25013 08/16/95 I-131 4.13E-03 8.98E-03 3.13E-02 CF 06 25014 08/16/95 I-131 -2.71E-04 8.25E-03 3.04E-02 CF 07 25015 08/16/95 I-131 5.03E-03 9.68E-03 3.35E-02 CF 08 25016 08/16/95 I-131 -4.15E-03 9.94E-03 3.71E-02 CF 01 25115 08/23/95 I-131 -7.44E-03 8.03E-03 3.09E-02 CF 02 25116 08/23/95 I-131 3.29E-03 7.18E-03 2.58E-02 CF 03 25117 08/23/95 I-131 4.38E-03 7.10E-03 2.52E-02 l CF 04 25118 08/23/95 I-131 -5.10E-03 7.42E-03 2.83E-02 l CF 05 25119 08/23/95 I-131 7.61E-03 8.21E-03 2.82E-02 l CF 06 25120 08/23/95 I-131 -6.70E-03 8.50E-03 3.24E-02 CF 07 25121 08/23/95 I-131 -4.48E-03 8.24E-03 3.11E-02 CF 08 25122 08/23/95 I-131 6.61E-03 7.63E-03 2.65E-02 CF 01 25226 08/30/95 I-131 0.00E+00 7.17E-03 2.65E-02 i CF 02 25227 08/30/95 I-131 -2.19E-03 7.28E-03 2.74E-02 l CF 03 25228 08/30/95 I-131 9.03E-03 8.36E-03 2.85E-02 CF 04 25229 08/30/95 I-131 -7.14E-03 7.36E-03 2.87E-02 CF 05 25230 08/30/95 I-131 8.64E-03 8.26E-03 2.82E-02 CF 06 25231 08/30/95 I-131 1.35E-02 9.17E-03 3.03E-02 CF 07 25232 08/30/95 7 ,31 -1.46E-02 9.22E-03 3.62E-02 f CF 08 25233 08/30/95 J -J.31 8.48E-03 9.46E-03 3.26E-02 CF 01- 25300 09/06/95 I-131 -1.63E-03 8.16E-03 3.18E-02 CF 02 25301 09/06/95 I-131 -9.13E-03 9.38E-03 3.80E-02 CF 03 25302 09/06/95 I-131 -5.20E-03 8.91E-03 3.53E-02 CF 04 25303 =09/06/95 I-131 4.57E-03 8.48E-03 3.06E-02 CF 05 25304 09/06/95 I-131 6.49E-03 7.95E-03 2.83E-02 CF. 06 25305 09/06/95 I-131 9.50E-03 8.35E-03 2.87E-02 CF 07 25306 09/06/95 I-131 0.00E+00 8.06E-03 3.12E-02 CF 08 25307 09/06/95 I-131 6.30E-03 1.03E-02 3.70E-02 i i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i I 8eabrook station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE STA. L8N END DATE NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m)

CF 01 25.'91 09/13/95 I-131 -9.41E-03 9.02E-03 3.555-02 CF 02 25302 09/13/95 I-131 -2.71E-03 9.38E-03 3.52E-02 CF 03 25313 09/13/95 I-131 9.77E-03 1.02E-02 3.49E-02 CF 04 25394 09/13/95 I-131 3.87E-03 7.86E-03 2.83E-02 CF 05 25395 09/13/95 I-131 5.865-04 7.86E-03 2.938-02 CF 06 25396 09/13/95 I-131 1.15E-02 8.74E-03 2.93E-02 CF 07 25397 09/13/95 I-131 -1.675-02 9.22E-03 3.80E-02 CF 08 25398 09/13/95 I-131 -1.33E-03 8.51E-03 3.19E-02 CF 01 25500 09/20/95 I-131 -1.01E-02 8.82E-03 3.81E-02 CF 02 25501 09/20/95 I-131 -2.03E-03 8.36E-03 3.38E-02 CF 03 25502 09/20/95 I-131 -6.09E-03 1.06E-02 4.21E-02 CF 04 25503 09/20/95 I-131 -1.12E-02 8.75E-03 3.75E-02 l CF 05 25504 09/20/95 I-131 1.35E-02 6.92E-03 2.19E-02 CF 06 25505 09/20/95 I-131 8.18E-03 6.92E-03 2.35E-02 ,

CF 07 25506 09/20/95 I-131 8.17E-03 7.83E-03 2.68E-02 l CF 08 25507 09/20/95 I-131 1.19E-02 5.59E-03 1.73E-02 CF 01 25622 09/27/95 I-131 -5.24E-04 1.07E-02 4.00E-02

'CF 02 25623 09/27/95 I-131 0.00E+00 6.63E-03 2.66E-02 l CF 03 25624 09/27/95 I-131 0.00E+00 9.06E-03 3.48E-02 CF 04 25625 09/27/95 I-131 0.00E+00 7.98E-03 2.98E-02 CF 05 25626 09/27/95 I-131 -4.02E-03 8.26E-03 3.19E-02 CF 06 25627 09/27/95 I-131 4.04E-03 9.42E-03 3.37E-02 l CF 07 25628 09/27/95 I-131 4.64E-03 8.52E-03 3.06E-02 CF 08 25629 09/27/95 I-131 1.45E-03 9.06E-03 3.34E-02 CF 01 25787 10/04/95 I-131 9.43E-03 7.77E-03 2.62E-02 CF 02 25788 '10/04/95 I-131 -2.45E-03 7.24E-03 2.72E-02 CF 03 25789 10/04/95 I-131 1.13E-02 8.92E-03 2.99E-02 CF 04 25790 10/04/95 I-131 4.98E-03 7.17E-03 2.51E-02 CF 05 25791 10/04/95 I-131 3.09E-03 7.77E-03 2.77E-02 CF 06 25792 10/04/95 I-131 2.94E-03 1.04E-02 3.71E-02 CF 07 25793 10/04/95 I-131 -5.42E-03 8.57E-03 3.23E-02 CF 08 25794 10/04/95 I-131 1.20E-02 8.50E-03 2.83E-02 CF 01 25903 10/11/95 I-131 -1.55E-03 9.69E-03 3.65E-02 CF 02 25904 10/11/95 I-131 4.66E-03 1.17E-02 4.18E-02 CF 03 25905 10/11/95 I-131 1.54E-02 9.43E-03 3.07E-02 CF 04 25906 10/11/95 I-131 -9.95E-03 8.76E-03 3.55E-02 CF 05 25907 10/11/95 I-131 0.00E+00 9.96E-03 3.69E-02 CF 06 25908 10/11/95 I-131 2.61E-02 9.72E-03 2.82E-02 CF 07 25909 10/11/95 I-131 -7.68E-03 9.40E-03 3.75E-02 CF 08 25910 10/11/95 I-131 1.09E-03 1.08E-02 3.95E-02 CF 01 26036 10/18/95 I-131 5.07E-03 8.92E-03 3.15E-02 CF 02 26037 10/18/95 I-131 4.15E-03 8.56E-03 3.05E-02 CF 03 26038 10/18/95 I-131 -9.07E-03 9.26E-03 3.60E-02 CF 04 26039 10/18/95 I-131 4.62E-03 7.83E-03 2.77E-02 CF 05 26040 10/18/95 I-131 -1.09E-02 7.34E-03 3.02E-02 CF 06 26041 10/18/95 I-131 -3.79E-03 9.19E-03 3.45E-02 CF 07 26042 10/18/95 I-131 -1.25E-03 8.58E-03 3.19E-02 CF 08 26043 10/18/95 I-131 8.01E-03 9.40E-03 3.25E-02

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

i Seabrook Station Radiological Environmental Data (January - December 1995)

SAMPLE CONC. STD DEV. MDC TYPE - STA. LSN END DATE -NUCLIDE (pci/cu.m) (pci/cu.m) (pci/cu.m)

---~~~~~-----------------~~---------~~----------------------------------------

CF 01 26178 10/25/95 I-131 -1.53E-02 9.19E-03 3.65E-02 CF 02 26179 10/25/95 I-131 3.53E-03 8.40E-03 3.00E-02 CF 03 26180 10/25/95 I-131 -4.81E 8.44E-03 3.23E-02 CF 04 26181 10/25/95 I-131 1.22E-02 8.08E-03 2.67E-02 CF 05 26182 10/25/95 I-131 1.38E-02 8.29E-03 2.70E-02

'CF 06 26183 10/25/95 I-131 -9.75E-03 8.79E-03 3.44E-02 CF 07 26184 10/25/95 I-131 4.05E-03 8.50E-03 3.03E-02 CF 08 26185 10/25/95 I-131 3.51E-03 8.94E-03 3.19E-02 CF 01 26337 11/01/95 I-131 -4.09E-03 8.39E-03 3.13E-02

CF 02 26338 11/01/95 I-131 -3.23E-03 8.27E-03 3.08E-02

CF 03 26339 11/01/95 I-131 -3.52E-03 8.47E-03 3.18E-02

^

CF 04 26340 11/01/95 I-131 -7.28E-03 7.28E-03 2.84E-02 CF 05 26341 11/01/95 I-131 7.34E-03 8.33E-03 2.87E-02 l CF 06 26342 11/01/95 I-131 1.13E-03 8.07E-03 2.93E-02 i CF 07 26343 11/01/95 I-131 1.12E-02 8.66E-03 2.91E-02 CF 08 26344 11/01/95 I-131 -4.51E-03 8.88E-03 3.32E-02

, CF 01 26488 11/08/95 I-131 1.55E-03 9.16E-03 3.39E-02 CF 02 26489 11/08/95 I-131 1.38E-02 9.10E-03 3.00E-02 CF 03 26490 11/08/95 I-131 -1.60E-03 1.07E-02 4.00E-02 i CF 04 26491 11/08/95 I-131 -1.22E-02 9.13E-03 3.69E-02 CF 05 26492 11/08/95 I-131 1.52E-03 9.75E-03 3.58E-02 CF 06 26493 11/08/95 I-131 -4.68E-03 9.98E-03 3.82E-02 CF 07 26494 11/08/95 I-131 -6.25E-03 1.13E-02 4.32E-02 CF 08 26495 11/08/95 I-131 1.77E-02 1.13E-02 3.69E-02

CF 01 26556 11/15/95 I-131 0.00E+00 9.24E-03 3.50E-02 CF 02 26557 11/15/95 I-131 -1.51E-02 8.88E-03 3.80E-02 CF 03 26558 11/15/95 1-131 -1.42E-02 1.06E-02 4.34E-02 CF 04 26559 11/15/95 I-131 1.07E-02 8.79E-03 2.98E-02 CF 05 26560 11/15/95 I-131 -7.16E-03 7.35E-03 2.93E-02 CF 06 26561 11/15/95 I-131 -1.56E-02 7.99E-03 3.37E-02 CF 07 26562 11/15/95 I-131 -1.27E-03 7.54E-03 1.86E-02 2.65E-02

! CF 08 26563 11/15/95 I-131 -1.26E-09 6.98E-03 1

CF 01 26698 11/22/95 I-131 1.ABE-02 9.67E-03 3.09E-02

' CF 02 26699 11/22/95 I-131 1.0?2-02 A.09E-03 2.73E-02 CF 03 26700 11/22/95 I-131 -1.01E-02 4 64E-03 3.80E-02 CF 04 26701 11/22/95 I-131 6.09E-03 .20E-03 3.22E-02

CF 05 26702 11/22/95 I-131 -1.04E-02 8.60E-03 3.43E-02 Cv 06 26703 11/22/95 I-131 -9.09E-03 8.79E-03 3.49E-02

CF 07 26704 11/22/95 I-131 1.14E-02 1.00E-02 3.39E-02 CF. 08 26705 11/22/95 I-131 -1.40E-03 8.72E-03 3.28E-02 CF 01 26819 11/30/95 I-131 1.21E-02 7.873-03 2.59E-02 CF 02 26820- 11/30/95 I-131 -3.20E-03 7.14E-03 2.72E-02 CF 03 26821 11/30/95 I-131 1.14E-02 7.92E-03 2.63E-02 4 CF 04 26822 11/30/95 I-131 1.28E-02 6.45E-03 2.04E-02 CF 05 26823 11/30/95 I-131 -7.52E-03 7.38E-03 2.88E-02 CF 06 26824 11/30/95 I-131 4.51E-03 9.03E-03 3.18E-02 CF 07 26825 11/30/95 I-131 1.80E-02 8.11E-03 2.53E-02 CF 08 26826 11/30/95 I-131 -6.82E-03 8.19E-03 3.16E-02

!- i i

Radioactivity detected (i.e., Concentration is > 3 Std. Deviations).

\ . ..

i Seabrook Station Radiological Environmental Dat a .

(January - December 1995)

SAMPLE CONC. STD DEV. MDC-TYPE STA. LSN END DATE NUCLIDE (pci/cu.m) (pci/cu m) (pci/cu.m)

CF 01 26917 12/06/95 I-131 3.80E-03 9.69E-03 3.58E-02 CF O2 26918 12/06/95 I-131 5.65E-03 7.59E-03 2.76E-02 CF 03 26919 12/06/95 I-131 1.69E-02 1.15E-02 ImdOE-02 i CF 04 26920 12/06/95 I-131 5.54E-03 1.03E-02 3.71E-02 l CF. 05 26921 12/06/95 I-131 -1.25E-02 1.06E-02 4.15E-02 CF 06 26922 12/06/95 I-131 1.19E-02 8.89E-03 2.98E-02 CF 07 26923 12/06/95 I-131 -1.23E-03 9.60E-03 3.60E-02 CF 08' 26924 12/06/95 I-131 -4.43E-03 9.91E-03 3.77E-02 CF 01 26980 12/13/95 I-131 1.08E-02 8.24E-03 2.76E-02 ]

CF 02 26981 12/13/95 I-131- 2.11E-02 7.58E-03 2.21E-02 ;

CF 03 26982 12/13/95 I-131 -2.56E-03 8.86E-03 3.32E-02 l

- CF 04 26983 12/13/95 I-131 2.96E-04 6.90E-03 2.57E-02 )

CF 05 26984 12/13/95 I-131 4.60E-03 8.30E-03 2.94E-02 CF 06 26985 12/13/95 I-131 -1.24E-03 7.75E-03 2.92E-02 CF 07 26986 12/13/95 I-131 -1.23E-02 7.39E-03 3.08E-02 CF 08 26987 12/13/95 I-131 1.40E-02 7.82E-03 2.51E-02

. 1 CF. 01 27113 12/19/95 I-131 0.00E+00 1.09E-02 4.03E-02 CF 02 27114 12/19/95 I-131 -1.57E-03 1.13E-02 4.15E-02 '

CF 03 27115 12/19/95 I-131 -8.71E-03 1./'E-02 5.34E-02 l CF 04 17J16 12/39/95 I-131 7.43E-03 8.9eE-03 3.13E-02 l CF~ 05 27117 12/19/95 I-131 3.11E-03 1.16E-02 4.18E-02 CF 06 27118 12/19/95 I-131 -3.35E-03 1.32E-02 4.87E-02 CF 07 27119 12/19/95 I-131 3.21E-03 1.06E-02 3.85E-02 CF 08 27120 12/19/95 I-131 -1.69E-02 1.22E-02 4.83E-02 ,

CF 01 27272 12/26/95 I-131 4.58E-03 8.77E-03 3.17E-02 CF 02 27173 12/26/95 I-131

-9.23E-03 8.15E-03 3.35E-02 CF 03 27174 12/26/95 I-131 3.07E-03 8.45E-03 3.13E-02 CF 04 27175 12/26/95 I-131 9.50E-04 7.72E-03 2.90E-02 ;

CF 05 27176 12/27/95 I-131 1.91E-02 7.48E-03 2.19E-02' I CF 06 27177 12/27/95 I-131 3.61E-03 8.50E-03 3.06E-02 l CF 07 27178 12/26/95 I-131 1.15E-02 8.11E-03 2.70E-02 !

CF 08 27179 12/26/95 I-131 -1.58E-03 8.79E-03 3.37E-02 l l

i l

l 1 l l

l t

i

!

Radioactivity detected (i.e., concentration is > 3 Std. Deviations).

l

- , , - - _ .

ML20107K500

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