Text

Annual Radiological Environ Operating Rept 960101-1231
	ML20148A005
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	12/31/1996
From:	; NORTHEAST UTILITIES
To:	;
Shared Package
ML20148A011	List: CY-97-052, Forwards Two Copies of Annual Radiological Environ Operating Rept, IAW Requirements of Haddam Neck Radiological Effluent Monitoring Manual; ML20148A005;
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ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT HADDAM NECK STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM JANUARY 1,1996 - DECEMBER 31,1996 i

DOCKET NO. 50-213 LICENSE NO. DPR-61 Prepared for the 1

CONNECTICUT YANKEE ATOMIC POWER COMPANY Haddam, Connecticut By the NORTHEAST UTILITIES SERVICE COMPANY l

New Britain, Connecticut 9705070174 970430 PDR ADOCK 05000213 PDR R

~_ =.

i 6

Haddam Neck Station Annual Radiological Environmental Report 1996 TABLE OF CONTENTS

1.

SUMMARY

1-1 l

2. PROGRAM DESCRIPTION 2-1 r

l 2.1. Sam pling Schedule, Types, and Locations 2-1 26 2.2. Samples Collected During Report Period

~ 3. RADIOCHEMICAL RESULTS 3-1 3-1 3.1. Summary Table 3.2. Data Tables 3 15 I

4. DISCUSSION OF RESULTS 4-1 41 4.1. Gamma Exposure Rate (Table 1) 4.2. Air Particulate Gross Beta Radioactivity (Table 2) 42 4-2 4.3. Airborne lodine (Table 3) 4.4. Air Particulate Gamma Spectra (Table 4A-D) 4-2 4.5. Air Particulate Strontium (Table 5) 4-3 43 4.6. Soil (Table 6) 4-3 4.7. Cow Milk (Table 7) 4-4 4.8. Goat Milk (Table 8) 4-4 4.9. Pasture Grass (Table 9) 4-4 4.10. Well Water (Table 10) 45 4.11. ReserYOir Water (Table 11) 4-5 4.12. Fruits and Vegetables (Table 12) 4-5 4.13. Broad Leaf Vegetation (Table 13) 4-6 4.14. River Water (Table 14) 4-6 4.15. Bottom Sediment (Table 15) 4-6 4.16. Shellfish (Table 16) 4-6 4.17. Fish (Tables 17A and 17B)

5. OFF-SITE DOSE EQUIVALENT COMMITMENTS 5-1

6. DISCUSSION 6-1 APPENDIX A COW AND GOAT CENSUS FOR 1996 A-1 APPENDIX B NORTHEAST UTILITIES QA PROGRAM B-1 APPENDIX C

SUMMARY

OF INTERLABORATORY COMPARISONS C-1 I

Haddam Neck Station Annual Radiological Environmental Report 1996 1

SUMMARY

The radiological environmental monitoring program for the Haddam Neck Plant was continued for the period January through December 1996, in compliance with the Radiological Effluent Monitoring and Off-Site Dose Calculation Manual. This annual repon was prepared for the Cormecticut Yankee Atomic Power Company (CYAPCO) by the Radiological Assessment Branch of the Northeast Utilities Service Company (NUSCO). All sample collections and preparations are perfomied by the Production Operations Services Laboratory. Gamma exposure measurements were performed by the Production Operations Services Laboratory. All remaining laboratory analyses were performed by Yankee Atomic Environmental Laboratory.

Radiological analyses were perfonned with ganuna exposure measuring devices and on samples of air particulates and iodine, milk, pasture grass, broad leaf vegetation, well water, fruits, vegetables, river water, bottom sediment, shellfish, and fish. In evaluating the results of these analyses it is necessary to consider the variability of radionuclide uptake in environmental media. This variability is dependent on many factors, including plant release rates, meteorology, number and size of nuclear weapon tests, seasonal variability of fallout, soil characteristics, farming practices, and feed type. Significant variations in measured levels of radioactivity could be caused by any one of these factors. Therefore, these factors need to be considered in order to properly explain any variations.

Haddam Neck shutdown on July 22,1996 to work on service water system problems. The plant never restarted in 1996. The decision by the Board of Trustees to permanently shutdown Haddam Neck plant due to economic reasons occurred on Dec. 4,1996. The monitoring of radioactivity in the environment around the site did not change due to this decision. Now that decommissioning evolutions will be the primary activities on site, the radiological monitoring of the environment will continue to assure the health and safety of the public and workers.

The predominant radioactivity, indicated by the results in 1996, was that from nonplant (not Haddam Neck) sources, such as fallout from nuclear weapons tests and naturally occurring radionuclides. As typical of previous years, plant related radioactivity was observed at some of the on-site gamma monitoring locations. The only other observation of plant effects was tritium in well water at the on-site location.

As usual, cesium-137 and strontium-90 were measured in both cow and goat milk. These levels are a result of nuclear weapons testing in the 1960s and not the result of plant operation. This can be concluded based on the facts that: insufficient quantities of these j

isotopes have been released by the plant to account for the measured concentrations, chemically similar and plant related cesium-134 and strontium-89 have not been detected and higher levels of cesium-137 and strontium-90 were detected prior to initial plant operation.

l l

l-1

Haddam Neck Station Annual Radiological Environmental Report 1996 l

l i

The radiation dose (dose equivalent conunitment) to the general public from the plant's l

discharges has been evaluated by two methods. One method utilizes the measured l

station's discharges and conservative transport models and the other utilizes the measured i

concentrations of radioactivity in the environmental media.

The maximum whole body dose (station boundary) that could occur to a member of the general public was 0.29 millirem from airbome effluents, and 0.07 millirem from liquid discharges for a total whole body dose of 0.36 millirem. The average dose to a member of the public residing within 50 miles of the plant is 0.00017 millirem. These doses are 1.4 percent and 0.0007 percent of the standards as set by the Environmental Protection Agency on the maximum allowable dose to an individual of the general public. These standards are a small fraction (less than 10 percent) of the 284 mrem per year normal Connecticut resident background radiation (NCRP94) and are designed to be inconsequential in regard to public health and safety. Plant related doses are even a smaller fraction of the natural background; they are less than 10 percent of the variation in natural background in Connecticut. Therefore, for the above stated reasons, the plant related doses have insignificant public health consequences.

l I

l-2

l Haddam Neck Station Annual Radiological Environmental Report 1996 j

2m PROGRAM DESCRIPTION l

\\

2.1.

Sampling Schedule, Types, and Locations The sample locations and the sample types and frequency of analysis are given in Tables 2-1 and 2-2 and Figures 2.1 and 2.2. The program as described here includes both required samples as specified in the Radiological Efnuent Monitoring and Off-Site Dose Calculation Manual and any extra samples, i

l l

- Haddarn Neck Station Annual Radiological Environmental Report 1996 i

Table 2-1 Environrnental Stonitorine Procram Sampline Tvoes and Lncations

> Direction &

.~

j Location:

Distance from.

?

Nu m ber*

' l'ocation Na me Release Point - - Sample Types 4

11 On site - Mouth of Discharge Canal 1.1 Mi, ESE TLD 21 Haddam Park Rd.

0 8 Mi, S TLD 3-1 Haddam-Jail Hill Rd.

0 8 Mi, WSW TLD 4-1 Haddam-Ranger Rd.

1.3 Mi, SW TLD, Air Particulate, lodine 51 On-site Injun Hollow Rd.

0.4 Mi, NW TLD, Air Particulate, lodine 6-1 On-site-Substation 0 5 Mi, NE TLD, Air Particulate, lodine, Veg.

7!

Haddam 1.3 Mi, SE TLD, Air Particulate, Iodine 31 East Haddam 3.1 Mi, ESE TLD, Air Particulate, lodine 9-1 Higganum 4.3 Mi, WNW TLD, Air Particulate. lodine 10-1 Hurd Park Rd.

2 8 Mi, NNW TLD Il-C Middletown 9.0 Mi. NW TLD 12-C Deep River 7.1 Mi, SSE TLD 13 C North Madison 12.5 Mi, SW TLD, Air Particulate, lodine 14-C Colchester 10.5 Mi, NE TLD 15 1 On site Wells 0.5 Mi, ESE Well Water 16-C Well-State Highway Dept. E. Haddam 2.8 Mi, SE Well Water 17 C Fruits & Vegetables Beyond 10 Miles Vegetation 18 1 Site Boundary 0.4 Mi, NW Vegetation 19 1 Cow Lncation #1 6.5 Mi, ENE Milk 20-1 Cow Location #2 6.0 Mi, NW Milk 21 l Cow Location #3 8.0 Mi, WNW Milk 22 C Cow Location #4 11.0 Mi, ENE Milk 23-C Goat Location #1 17.0 Mi, NE Milk 24-1 Goat Location #2 3.6 Mi, SSE Milk 25-1 Fruits & Vegetables Within 10 Miles Vegetation 26 1 CT River Near Intake 1,0 Mi, WNW Fish 27-C CT River-Higganum Light 4.0 Mi, WNW Shellfish 28 I CT River-E. Haddam Bndge 1.8 Mi, SE Bottom Sediment, River Water 23 X CT River-E. Haddam Bridge 1.8 Mi, SE Shellfish 29-1 Vicmity of Discharge Bottom Sediment, Fish 30-C CT River - Middletown 9.0 Mi, NW River Water Bottom Sediment 7.6 Mi, NW Fish 31-1 Mouth of Salmon River 0.8 Mi, ESE Shellfish 40-X Near Intake Structure 0.1 Mi, SSW TLD 41 X Picnic Area 0.3 Mi, WNW TLD 42-X Environmental Trail 0.1 Mi, NW TLD 43-X Moodus - Rts 149 & 151 2.5 Mi, ENE TLD 44-X Shailerville, Horton Rd.

1.0 Mi, SE TLD 45-X Old Waste Gas Sphere Fence 0.1 Mi, E TLD 46-X Discharge Canal Fence 0.2 Mi, SE TLD 47 X Info Center 0.1 Mi. WNW TLD i

Key:

1 - Indicator C Control X - Extra - sample not required

'The release points are the stack for terrestrial locations and the end of the discharge canal for aquatic locations.

l lladdam Neck Station Annual Radiological Environmental Report 1996 Table 2-2 Technical Specification Sampline Frequency & Type of Analvsis Sampling &

. Exposure Pathway Number of Collection Type of Analysis and/or Sample Locations Frequency l a.

Gamma Dose -

14 Monthly Gamma Dose Environmental TLD l b.

Gamma Dose -

27 Quarterly; N/A l

Accident TLD Gross Beta - Weekly 2.

Airborne Particulate 7

Continuous sampler -

l v eekly filter change Gamma Spectrum - Quarterly on composite (by location), & on individual sample if gross beta is greater than 10 times the mean l

l of the weekly control stations gross beta results 3.

Airborne lodine 7

Continuous sampler -

I-13 I weekly canister change l

4.

Vegetation 4

One sample near middle &

Gamma Isotopic on each sample l

one near end of growing I

season 5.

Milk 6

Monthly Gamma Isotopic and I-131 on each sample, Sr-89 & Sr-90 on quarterly composites l

5a. Pasture Grass 6

Sample as necessary to Gamma Isotopic substitute for unavailable milk 6.

Well Water 2

Quarterly Gamma Isotopic & Tritium on each sample i

7.

Bottom Sediment 3

Semiannually Gamma Isotopic l

8.

River Water 2

Quarterly Sample -

Gamma Isotopic & Tritium I

Indicator is Continuous Composite; Background is composite of Six weekly Grab Samples i

Fish - Bullheads &,

3 Quarterly Gamma Isotopic l

9, when available, Perch or other edible fish

10. Shellfish 2

Quarterly Gamma Isotopic Accident momtonng TLDs to be dedosed at least quarterly

Annual Radiologicaj Environmental Report 1996 Haddam Neck Station '

l I

i Eum 2.1 Haddam Neck Plant Aquatic and Well water Sample Stations m,

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Haddam Neck Station Annual Radiological Environmental Report 1996 i

Figure 2.2 Haddam Neck Plant Inner Terrestrial Monitoring Stations i

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Haddam Neck Station Annual Radiological Environmental Report 1996 2.2.

Samples CoIIected During Report Period The following table summarizes the number of samples of each type collected during the present reporting period:

sNumber ori 5 Number of..

i e,

,, -., ~.

. c,

' Technicall,

J: . Technical [

l ' Nuniber of'E.

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P";S ecificationit -

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-P

._m ples ;, tRequ. d Sa,mp,lesj g ;lyzed'.N '

., 1..p, a Req u. ired Sam.

ire

,g7 w.m Analyzed; Gamma Exposure (TLD) 168 168 96 Air Particulates 364 364 0

Air lodine 364 364 0

Dairy Milk 48 48 0

Goat Milk 24 19 0

i Pasture Grass 2

0 Well Water 8

8 0

Fruit & Vegetables 8

8 0

Broad Leaf Vegetation 4

4 8

River Water 8

8 0

Bottom Sediment 6

6 0

Fish 24 24 0

Shellfish 8

8 4

Total AllTypes 1,034 1,031 108

' Sample as necessary to substitute for unavailable milk

Haddam Neck Station Annual Radiological Environmental Report 1996 3_._

RADIOCHEMICAL RESULTS 3.1.

Summary Table In accordance with the Radiological Effluent Monitoring Manual (REMM), Section F.1, a suntmary table of the radiochemical results has been prepared and is preseated in Table 3-1.

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

A more detailed analysis of the data is given in Section 4.0 where a discussion of the variations in the data explains many aspects that are not evident in the Summary Table because of the basic limitation of data summaries.

IABLE 3-1 PAGE 3-2 ENVIRONMENTAL RCDIOLCSICCL MONIIC3tNG PRCSRAM

SUMMARY

CONOECTICUT VANKEE ATOMIC POWER COMPANY, HADOCM NECK PLANT DOCKET 50-213 JANUARY - DECEMBER 1996 ACALYSIS AND LOWER LIMIT ALL INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL

Of 3O TOTAL NUMBER OF LOCATIONS LOCATION #,

toCATIONS NRM LY Of ANALYSES DEIECil0N MEAN DISTANCE MEAN MEAN (C)

ED PERFORMED (110) (A)

(RANGE)(B)

AND DIRECTION (RANGE)(B)

(RANGE)(B)

DOSE 120, 48 (D) 1.5 7.4 LOC # 10 8.8 7.8 0

ER)

( 5.6 - 9.2) 2.8 MILES NNW

( 8.0 - 9.2)

( 6.2

.9.1) 312. 52 0.01 (E) 0.020 toc # 9 0.020 0.019 0

ATE BETA (0.009 - 0.035) 4.3 MILES WNW (0.010 - 0.034)

(0.009 - 0.036) blNE 3)

GE(tt) 312.52 0.07 0.000 LOC # 13C 0.002 0.002 0

I-131

( 0.024 - 0.047) 12.5 MILES SW

(-0.013 - 0.019)

(-0.013 - 0.019) t GE(LI) 24 d 0.107 LOC # 7 0.114 0.102 0

BE-7

( 0.073 - 0.132) 1.8 MILES SE

( 0.083 - 0.129)

( 0.077 - 0.112)

CO 60 0.000 LOC # 7 0.000 0.000 0

( 0.000 - 0.0011 1.8 MILES SE

( 0.000 - 0.001)

( 0.000 - 0.000) 2R-95 0.000 Loc # 5 0.001 0.000 0

(-0.002 - 0.001) 0.4 MILES NW

( 0.000 - 0.001)

( 0.000 - 0.000)

NS 95

-0.000 Loc # 13C 0.001 0.001 0

(-0.002 - 0.001) 12.5 MILES SW

( 0.000 - 0.002)

RU-103 0.000 LOC # 13C 0.001 0.001 0

(-0.001 - 0.001) 12.5 MILES SW

( 0.000 - 0.001)

CS-134 0.05 (t) 0.000 LOC # 9 0.000 0.000 0

( 0.000 - 0.001) 4.3 MILES WNW

( 0.000 - 0.001)

( 0.000 - 0.000)

CS-137 0.06 0.000 LOC # 13C 0.000 0.000 0

( 0.000 - 0.000) 12.5 mites SW

( 0.000 - 0.001)

SR

12. 4 0.3 toc # 21 0.9 0.6 0

tY)

SR-89

(-4.8 - 3.3) 8.0 MILES WNW

(-1.5 - 2.7)

( 0.3 - 0.9)

IL)

SR-90 0.8 LOC # 20 1.5 1.5 0

(-0.2 - 2.2) 6 MILES NW

( 0.8 - 2.2)

( 1.2 - 2.3)

TCBLE 3-1 PAGE 3-3 ENVIRONMENTQL RADIOLCSICAL MONITORING PROG"AM SLEMORY I.ONNECTICui YANKEE QTOMIC POWER COMPANY, HADDAM NECK PLANT DOCKET 50-213 JANUARY - DECEM8ER 1996 ANALYSIS AND LOWER LIMIT ALL INDICATOR tCCATION WITH HIGHEST ANNUAL MEAN CONTROL

Of C

TOTAL ktMBER OF LOCATIONS LOCAllON #,

LOCAllONS NRM aY Of QNALYSES DETECTION MEAN DISTANCE MEAN MEAN (C)

,ED PERFORMED (LtD) (A)

(RANGE)(B)

AND DIRECTION (RANCE)(B)

(RANGE)(B)

IODINE 36,12 1

0.02 LOC # 20 0.03 0.02 0

1-131

( -0.04 -

0.10) 6 MILES NW

( -0.02 -

0.10)

( -0.04 -

0.09)

CE(t!) 36.12 15

-0.2 toc # 22C 0.4 0.4 0

CS-134

( -3.5 -

3.2) 11 MILES ENE

( -1.3 -

2.6)

( -1.3 -

2.6)

CS-137 18 2.2 toc # 20 3.4 0.6 0

( -1.9 -

7.1) 6 mites NW

(

0. 7 -

5.5)

( -1.2 -

2.8)

BA-140 70 0

toc # 20 1

-0 0

( 7) 6 mites NW

( 7)

( 2)

LA-140 25 0.3 LOC # 20 1.5

-0.6 0

( -5.2 -

7.7) 6 MILES NW

( -3.1 -

7.7)

( -4.4 -

2.1)

MILE SR

4. 3 0.5 LOC # 24 0.5

-0.3 0

?

L)

SR-89

(-1.8 - 3.6) 4.5 MILES N

(-1.8 - 3.6)

(-1.5 - 1.7)

SR-90 7.2 LOC # 24 7.2 1.3 0

( 4.4 - 9.5) 4.5 MILES N

( 4.4 - 9.5)

( 0.8 - 2.1) r IODINE 10. 9 1

0.01 LOC # 23C 0.01 0.01 0

I-131

( -0.07 -

0.10) 17 MILES NE

( -0.07 -

0.09)

( - 0.07 -

0.09) t i

f GML I) 10, 9 15 0.3 LOC # 23C 0.5 0.5 0

CS-134

( -2.6 -

2.4) 17 mites NE

( -1.4 -

4.2)

( -1.4 -

4.2)

I CS-137 18 8.6 LOC # 24 8.6 3.1 0

( 3.9 - 14.8) 4.5 MILES N

( 3.9 - 14.8)

( 0.2 -

9.9)

BA-140 70

-0 LOC # 24

-0

-1 0

t

( 4) 4.5 MILES N

( 4)

( 1)

LA-140 25

-0.5 LOC # 24

-0.5

-1.4 0

[

( -4.5 -

5.0) 4.5 MILES N

( -4.5 -

5.0)

( -4.8 -

0.6)

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

. _ _ ~

~ _ - -

~ _ _....

TABLE 3-1 PAGE 3-4 ENVIRONMENTAL RQDIOLOGICCL MONITORIOG PROGRCH StMMCRY COMECTICUT YANKEE QTOMIC PouES COMPANY, HADDAM NECK PLANT DCIKET 50-213 JANUA27 - DECEMBEC 1996 ANALYSIS AND LOuER LIMli ALL INDICATOR LOCAllON ulIH HIGHEST ANNUAL MEAN CONTR01.

OF

4 CJ TOTAL NUMBER Of LOCATIONS LOCAllON #.

(OCATIONS NRM t>QY Of ANALYSES DETECTION MEAN DISTANCE MEAN MEAN (C)

LED PE R F ORMED (LtD) (A)

(RANGE)(B)

AND DIRECilON (RANGE)(B)

(R ANGE )(B) itE SR 2

LOC # 23C O

)

SR-89

(.

. )

17 MILES NE

(.

. )

(.

G)

LOC # 23C 0

SR-90

(.

. )

17 MILES NE

(.

. )

(.

. )

GE(tt) 2 0.06 LOC # 23C 0.000 0.000 0

1-131

(.

)

17 HILES NE

( 0.000 - 0.000)

CS-134 0.06 LOC # 23C

-0.003

-0.003 0

(.

)

17 MILES NE

(-0.004 - -0.002)

(-0.004

-0.002)05-137 0.08 LOC # 23C 0.003 0.003 0

(.

)

17 MILES NE

( 0.000 - 0.007)

BA-140 LOC # 23C

-0.018

-0.018 0

(.

)

17 MILES NE

(-0.024 - -0.013)

(-0.024

-0.013)

LA-140 LOC # 23C

-0.021

-0.021 0

(.

)

17 mites NE

(-0.027 - -0.015)

(-0.027 - -0.015) 40WAT ER CE(tt)

4. 4 15 0.2 toc # 15 0.2

-0.2 0

/L)

MN-54

( -0.7 -

1.2) 0.5 MILES ESE

( -0.7 -

1.2)

( -0.5 -

0.2)

C0-58 15 0.5 LOC # 15 0.5

-0.5 0

( -0.3 -

0.9) 0.5 MILES ESE

( -0.3 -

0.9)

( -2.0 -

0.8)

C0-60 15

-0.4 LOC # 16C 0.5 0.5 0

( -2.0 -

0.7) 2.8 MILES SE

( -0.2 -

0.9)

( -0.2 -

0.9) 1-131 O

toc # 15 0

-0 0

( 5) 0.5 mites ESE

< 5)

( 1)

CS-134 15 1.0 LOC # 15 1.0

-0.4 0

( -0.7 -

2.3) 0.5 MILES ESE

( -0.7 -

2.3)

( -1.5 -

0.7) e&

4w m.

TABLE 3-1 POGE 3-5 EDVIRONMENTAL RADIOLCSICAL MONITC3lNG OROSRCM

SUMMARY

CONNECTICUT YANKEE ATOMIC POWER COMPCN'J, HADDaM NECK PLANT DOCKET 50-213 JANUARY - DECEMBER 1996 ANALYSIS AND LOWER LlHIT ALL INDICATOR

~

LOCAll0N WITH HIGHEST ANNUAL MEAN CONTROL

OF

) CJ TOTAL NUMBER Of LOCATIONS

JCATION #,

LOCA TIONS NRM LY OF ANALYSES DETECTION MEAN DISTANCE MEAN MEAN (C)

E0 PERFORMED (LLD) (A)

(RANGE)(B)

AND DIRECTION (RANGE)(B)

(RANGE}(8)

CS-137 18

-0.2 LOC # 16C 0.7 0.7 0

,( - 1. 3 -

0.6) 2.8 MILES SE

( -0.8 -

2.6)

( -0.8 -

2.6)

BA-140 60 1

toc # 15 1

0 0

( 3) 0.5 MILES ESE

( 3)

( 4)

LA-140 60 1

toc # 15 1

0 0

( 3) 0.5 MILES ESE

( 3)

( 4)

TRIIIUM

4. 4 2000 653 LOC # 15 653 132 0

H-3

( -137 -

1523) 0.5 MILES ESE

( -137 -

1523)

( -291 -

597)

S AND GEQI)

4. 4 0.04 LOC # 17C 0.05 0.05 0

ABLES BE-T

(-0.03 - 0.17)

>10 MILES

(-0.02 - 0.13)

/G)

K-40 2.15 LOC # 25 2.15 1.74 0

( 0.69 - 5.02)

<10 MILES

( 0.69 - 5.02)

< 0.57 - 3.54)

MN-54

-0.001 LOC # 170 0.002 0.002 0

(-0.009 - 0.016)

>10 MILES

(-0.003 - 0.009)

(-0.003

. 0.009)

CO-58 0.000 LOC # 25 0.000

-0.002 0

(-0.005 - 0.003)

<10 MILES

(-0.005 - 0.003)

(-0.009 - 0.003) 00-60 0.005 LOC # 17C 0.006 0.006 0

(-0.003 - 0.011)

>10 MILES

(-0.005 - 0.011)

(-0.005 - 0.011) 2R-95 0.011 LOC # 25 0.011

-0.004 0

( 0.006 - 0.0?0)

<10 MILES

( 0.006 - 0.020)

(-0.016 - 0.006)

NS-95

-0.003 LOC # 17C

-0.001

-0.001 0

(-0.011 - 0.006)

>10 MILES

(-0.017 - 0.012)

RU-103 0.001 LOC # 25 0.001

-0.003 0

(-0.010 - 0.010)

<10 MILES

(-0.010 - 0.010)

(-0.009 - -0.001)

TCBLE 3-1 PAGE 3-6 ECNIRONMENICL RADIOLC$lCAL MON!TC31NG PROGR.AM

SUMMARY

CONNECTICUT YANKEE ATOMIC POWER COMPANY, HADDAM kECK PLANT DOCKET 50-213 JANUARY - DECEMBER 1996 AEALYSIS AND LOWER LIMIT ALL INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL

OF G

10TOL NUMBER OF LOCATIONS LOCATION #,

LOCATIONS NRM

.3 0F ANALYSES DEIEcit(#

MEAN DISTANCE MEAN MEAN (C)

ED PERfDRMED (tt0) (A}

(RANGE)(B)

AND O!RECTION (RANGE)(B)

(RANGE)(B) 1-131 0.06 (G)

-0.000 LOC # 25

-0.000

-0.002 0

(;0.007 - 0.012)

<10 MILES

(-0.007 - 0.012)

(-0.019 - 0.014)

CS-134 0.06

-0.001 LOC # 25

-0.001

-0.003 0

(-0.004 - 0.006)

<10 MILES

(-0.004 - 0.006)

(-0.013 - 0.009)

CS-137 0.08

-0.000 LOC # 17C 0.002 0.002 0

(-0.008 - 0.013)

>10 mites

(-0.005 - 0.011)

Ra-226 0.173 LOC # 25 0.173 0.165 0

(-0.137 - 0.724)

<10 MILES

(-0.137 - 0.724)

(-0.180 - 0.412)

TH-228 0.036 LOC # 25 0.036

-0.016 0

( 0.002 - 0.064)

<10 MILES

( 0.002 - 0.064)

(-0.037 - 0.009)

EAf GE(LI) 12.

0.71 LOC # 6 0.73 O

miloN BE-7

( 0.17 - 1.61) 0.5 MILES NE

( 0.26 - 1.61)

(.

. )

(G)

K-40 2.42 LOC # 6 3,01 0

( 0.85 - 5.36) 0.5 MILES NE

( 1.37 - 5.36)

(.

. )

MN-54 0.000 LOC # 18 0.001 0

(-0.005 - 0.007) 0.4 MILES NW

(-0.002 - 0.003)

(

)

CO-58

-0.001 LOC # 18

-0.001 0

(-0.011 - 0.015) 0.4 MILES NW

(-0.011 - 0.015)

(.

)

CO-60 0.005 LOC # 18 0.006 0

(-0.007 - 0.014) 0.4 MILES NW

(-0.001 - 0.014)

(

)

2R-95 0.005 LOC # 18 0.008 0

(-0.014 - 0.019) 0.4 MILES NW

( 0.000 - 0.019)

(.

)

N8-95

-0.001 LOC # 6

-0.001 0

(-0.013 - 0.008) 0.5 mites NE

(-0.013 - 0.008)

(.

)

TABLE 3-1 PACE 3-7 ENVIRON

TENT AL RJ.DIOLOGILAL MONIIORING PROGRAM

SUMMARY

CC EECTICUT YANKEE ATOMIC POWER COMPANY, HADD!.M NECK PLANT DCCKET 50-213 JANUARY - DECEMBER 1996 ANALYSIS AND LOWER LIMIT ALL INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL

Of C2 10iAL NUMBER Of LOCAilONS LOCATION #,

LOCATIONS NRM Y

Of ANALYSES DETECilON MEAN DISTANCE MEAN MEAN (C)

ED PERFORME0 (tLD) (A)

(RANGE)(B)

AND DIRECTION (RANCE)(8)

(RANGE)(B)

RU-103

-0.002 LOC # 18

-0.002 0

(-0.016 - 0.003) 0.4 MILES NW

(-0.016 - 0.003)

(.

)

1-131 0.06 0.004 LOC # 6 0.006 0

(-0.010 - 0.012) 0.5 MILES NE

( 0.000 - 0.012)

(.

)

CS-134 0.06

-0.002 Loc # 6 0.001 0

(-0.028 - 0.011) 0.5 MILES NE

(-0.010 - 0.011)

{.

)

CS-137 0.08 0.011 LOC # 18 0.022 O

i-(-0.008 - 0.034) 0.4 MILES Nu

(-0.002 - 0.034)

(

)

r RA-226

-0.023 L OC # 18

-0.01d 0

(-0.143 - 0.143) 0.4 MILES NW

(-0.118 - 0.123)

(.

)

1H-228 0.007 LOC # 18 0.011 0

(-0.025 - 0.048) 0.4 MILES NW

(-0.025 - 0.048)

(.

)

i uATER GE(LI)

4. 4

-8 LOC # 30C

-7

-7 0

1/L)

K-40

( -2) 9.0 MILES NW

( 1)

( -1)

MN-54 30

-0.1 toc # 28

-0.1

-0.2 0

( -0.5 -

0.7) 1.8 MILES SE

( -0.5 -

0.7)

( -0.5 -

0.3) 00-58 30

-0.5 LOC # 300 0.4 0.4 0

( -0.8 -

-0.3) 9.0 MILES NW

( -0.0 -

1.0)

( -0.0 -

1.0)

Co 60 30 0.1 LOC # 30C 0.3 0.3 0

( -0.2 -

0.6) 9.0 MILES NW

( -0.4 -

0.6)

( -0.4 0.6) 1-131

-4 LOC s F 2

2 0

( 78) 9.0 MILES i.h

( 7)

CS-134 30

-0.3 LOC # 28

-0.3

-1,1 0

( - 0.7 -

0.3) 1.8 MILES 55

( -0.7 -

0.3)

( -3.4 -

0.1) v

. ~. _ _. -.. -

.~., -.

TABLE 3-1 PAGE 3-G ENVIRONMENTAL RODIOLCSICAL MON!I C ING PROGRAM

SUMMARY

CC~DECTICUT YANKEE ATOMIC POWER COMPCJdY, HAODAM NECK PLANT DCfKET 50-213 JANUARY - DECEMBER 1996

- ANALYSIS AND LOWER LIMIT All, INDICATOR LOCATION WITH HIGHEST ANNUAL MFAN CONTROL

OF C2

~10TAL NUMBER OF LOCAllONS LOCATION f, LOCATIONS NRM JY OF ANALYSES DETECTION MEAN DISTANCE MEAM MEAN (C) 1EO PERf0RMED (LLD) (A)

(RANGE)(B)

ANO DIRECTION (RANGE)(B)

(RANGE)(B)

CS-137 40 0.0 LOC # 30C 0.2 0.2 0

( -0.5 -

0.8) 9.0 MILES NW

( -0.1 -

0.5)

( -0.1 -

0.5) t DA-140 120 (H)

-1 LOC # 30C 1

1 0

( 1) 9.0 MILES NW

( 3)

LA-140 30 (H)

-1 LOC # 30C 1

1 0

( 1) 9.0 MILES NW

( 3)

TRITIUM

4. 4 2000

-161 LOC # 30C 15 15 0

H-3

( -265 -

20) 9.0 MILES NV

( 242)

( 242) i C3 GE f t I )

4, 2 9.6 LOC # 30C 13.0 13.0 0

ICT K-40

( 7.1 - 13.5) 9.0 MILES NW (10.4 - 15.6)

(10.4 - 15.6) t/G) 0.03 LOC # 29 0.06 0.00 0

NN-54

( 0.00 - 0.12)

O MILES N/A

( 0.00 - 0.12)

(-0.00 - 0.00)

C0-58

-0.01 LOC # 30C

-0.00

-0.00 0

(-0.03 - -0.01) 9.0 MILES NW

(-0.00 - 0.00)

(-0.00 - 0.00) i' C0-60 0.01 LOC # 28 0.04 0.01 0

(-0.02 - 0.05) 1.8 mites SE

( 0.02 - 0.05)

(-0.00 - 0.02) i i

2R-95 0.02 LOC # 28 0.05 0.04 0

(-0.03 - 0.08) 1.8 MILES SE

( 0.01 - 0.08)

( G.02 - 0.05)

[

N8-95

-0.02 LOC # 29

-0.00

-0.01 0

(-0.04 - 0.00) 0 MILES N/A

(-0.01 - 0.00)

(-0.02

-0.01) 1-131

-0.04 LOC # 29 0.01 0.01 0

(-0.18 - 0.05)

O MILES N/A

(-0.02 - 0.05)

(-0.01 0.03)

(

CS-134 0.15

-0.01 LOC # 30C 0.01 0.01 0

(-0.02 - 0.00) 9.0 MILES Nu

(-0.01 - 0.03)

L 6

= * < w e.

.w..

b

m_

. _.=

TGBLE 3-1 PAGE 3-9 ENUlRONMECTAL RADIOtC3tCAL MONB10 RING PRCSRAM

SUMMARY

CONEECTICUT YQNKEE A10MIC POWER COMPAN7, HADOAM NECK PLANT DOCKET 50-213 JANUARY - DECEMBER 1996 ANALYSIS AND LOWER LIMIT ALL INDICATOR LOCATION WlIH HIGNEST ANNUAL MEAN CONTROL

Of d C3 10TAL NUMBER Of LOCATIONS LOCATION #,

LOCAi!ONS NRM WAY of ANALYSES DE1ECil0N MEAN DISTANCE MEAN MEAN (C)

't EO PERFORMED (LLD) (A)

(R ANGE )(B)

AND DIRECTION (RANGE)(8)

(RANCE)(B)

CS 137 0.18 0.06 LOC # 30C 0.11 0.11 0

( 0.03 - 0.10) 9.0 MILES NW

( 0.04 - 0.19)

( 0.04 - 0.19) a RA-226 1.34 LOC # 29 1.48 1.06 0

( 0.41 - 2.55)

O MILES N/A

( 0.41 - 2.55)

( 0.26 - 1.85)

IN-228 0.66 LOC # 28 0.81 0.77 0

( 0.45 - 0.82) 1.8 MILES SE

( 0.81 - 0.82)

( 0.48 - 1.05)

{

fisa GEf t f1

4. 4

-0.02 LOC # 27C 0.07 0.07 0

/G)

BE-7

(-u.25 - 0.20) 4 MILES WNW

(-0.04 - 0.25)

<-0.04 - 0.25) f K-40 0.3 LOC # 31 0.3 0.2 0

( 0.1 - 0.8) 0.8 MILES ESE

( 0.1 - 0.8)

(-0.1 - 0.4)

I CR-51 0.03 LOC # 31 0.03

-0.C5 0

(-0.11 - 0.32) 0.8 MILES ESE

(-0.11 - 0.32)

(-0.30 - 0.04)

RN-54 0.13

-0.01 LOC # 27C 0.00 0.00 0

(-0.02 - 0.00) 4 MILES WNW

(-0.01 - 0.03)

CO-58 0.13 0.00 LOC # 31 0.00

-0.01 0

(-0.00 - 0.01) 0.8 MILES ESE

(-0.00 - 0.01)

(-0.03 - 0.00)

FE-59 0.26 0.01 LOC # 31 0.01 0.01 0

(-0.02 - 0.04) 0.8 MILES ESE

(-0.02 - 0.04)

(-0.02 - 0.05)

C0-60 0.13 0.01 LOC # 31 0.01

-0.01 0

( 0.01 - 0.02) 0.8 MILES ESE

( 0.01 - 0.02)

(-0.06 - 0.05)

ZN-65 0.26

-0.03 LOC # 27C 0.05 0.05 0

(-0.05 - -0.01) 4 MILES WNW

(-0.01 - 0.06)

TABLE 3-1 PAGE 3-10 ENUIRONMENYC.1 RADIOLCSICAL MONITORING PRCSRAM

SUMMARY

CONNECTICUT TACKEE AIOMIC POWER COMPANY, HADDAM NECK PLANT 1

DCCKET 50-213 JANUARY - DECEMBER 1996

+

ANALYSIS AND LOWER LIMIT ALL INDICATOR LOCATION KITH HIGHEST ANNUAL MEAN CON!ROL

OF M C3 TOTAL NUMBER OF toCATIONS LOCATION #,

LOCATIONS NRM WAY OF ANALYSES DETECTIod MEAN DISTANCE HEAN MEAN (C)

LED PERFORMED (ttD) (A)

(RANGE)(B)

AND DIRECTION (RANGE)(B)

(RANCE)(B) 2R-95 0.03 t0c # 31 0.03 0.01 0

( 0.00 - 0.07) 0.8 MILES ESE

( 0.00 - 0.07)

(-0.03 - Of3)

N8-95

-0.00 LOC # 31

-0.00

-0.01 0

(-0.04 - 0.02) 0.8 MILES ESE

(-0.04 - 0.02)

(-0.02 - 0.01)

RU-103 0.00 LOC # 31 0.00

-0.02 0

(-0.01 - 0.03) 0.8 MILES ESE

(-0.01 - 0.05)

(-0.03 - -0.00)00-106 0.04 LOC # 27C 0.09 0.09 0

( 0.00 - 0210) 4 MILES WNW

(-0.13 - 0.31)

(-0.1

- 0.31) r AG-110M

-0.00 LOC # 31

-0.00

-0.01 0

l

(-0.01 - 0.02) 0.8 MILES ESE

(-0.01 - 0.02)

(-0.04 - 0.02) i 1-131

-0.02 LOC # 27C

-0.01

-0.01 0

(-0.07 - 0.02) 4 MILES WNW

(-0.10 - 0.06)

+

CS-134 0.13

-0.01 LOC # 27C 0.00 0.00 0

(-0.03 - 0.02) 4 MILES WNW

(-0.02 - 0.01)

CS-157 0.15 0.00 LOC # 31 0.00

-0.01 0

(-0.03 - 0.03) 0.8 HILES ESE

(-0.03 - 0.03)

(-0.02 - 0.02)

RA-226 0.00 Loc # 27C 0.44 0.44 0

(-0.49 - 0.33) 4 HILES WNW

( 0.16 - 0.78)

( 0.16 0.78)

TH-228 0.18 toc # 31 0.18 0.14 0

( 0.16 - 0.22) 0.8 MILES ESE

( 0.16 - 0.22)

( 0.05 - 0.27)

.D CE(ll) 16. 8

-0.00 LOC # 30C 0.02 0.02 0

TYPES)

BE-7

(-0.18 - 0.21) 7.6 mites NW

(-0.11 - 0.20)

I/G)

.~n,,

m

TABLE 3-1 PAGE 3-11 ENMIRONMENTAL RADIOLOGICAL MONilodlNG PROGRCM SUMMQRY CONNECTICUT YANKEE AIOMIC POWE3 COMPRNY, HADOAM NECK PL ANT DOCKET 50-213 JANUARY - DECEMBER 1996 ADLLYSIS AND LOWER LIMIT ALL INDICATOR LOCATION WITH H! CHEST ANNUAL MEAN CONTROL

OF M CJ TOTAL NUMBER Of t0 CATIONS LOCA110N #,

LOCATIONS NRM WAY Of ANALYSES DEIECTION MEAN DISTANCE HEAN MEAN (C) tED PERFORMED (ttD) ( A)

(RANGE)(B)

AND DIRECil0N (RANCE)(B)

(RANCE)(B)

K-40 2.9 LOC # 30C 3.2 3.2 0

( 2.1 - 3.8) 7.6 MILES NW

( 2.8 - 3.7)

CR-51

-0.02 LOC # 30C 0.03 0.03 0

(-0.27 - 0.12) 7.6 MILES NW

(-0.11 - OJ8)

(-0.11 - 0.18)

MN-54 0.13 0.00 toc # 29 0.01

-0.00 0

(-0.03 - 0.03) 0 MILES N/A

( 0.00 - 0.03)

(-0.01 - 0.01) 00-58 0.13

-0.00 LOC # 26 0.01

-0.00 0

(-0.03 - 0.01) 1 MILES WNW

(-0.01 - 0.01)

(-0.02 - 0.01)

FE-59 0.26 0.01 LOC # 30C 0.01 0.01 0

(-0.03 - 0.07) 7.6 MILES NW

(-0.03 - 0.06)

(-0.03 - 0.06) 00-60 0.13

-0.00 LOC # 30C 0.01 0.01 0

(-0.04 - 0.02) 7.6 mites NW

(-0.00 - 0.01)

ZN-65 0.26

-0.00 LOC # 29 0.01

-0.04 0

(-0.04 - 0.04)

O MILES N/A

(-0.01 - 0.04)

(-0.08 - -0.00) 22-95

-0.00 Loc # 29 0.02

-0.00 0

(-0.07 - 0.07) 0 MILES N/A

(-0.07 - 0.07)

(-0.01 - 0.04)

NB-95

-0.00 LOC # 26 0.00 0.00 0

(-0.03 - 0.03) 1 MILES UNW

(-0.01 - 0.05)

(-0.03 0.03)

RU-103

-0.00 LOC # 26 0.00

-0.00 0

(-0.02 - 0.01) 1 HILES WNW

(-0.01 - 0.01)

RU-106

-0.03 toc # 30C 0.01 0.03 0

(-0.24 - 0.18) 7.6 MILES NW

(-0.08 - 0.21)

AG-110M 0.00 LOC # 30C 0.01 0.01 0

(-0.03 - 0.03) 7.6 MILES NW

(-0.01 - 0.03)

(-0.01 - 0.03) 2 m.m m

n

TABLE 3-1 PACE 3-12 ECYJIRONMEDIAL RADIOLOGICAL MONIIORING PCCSRAM

SUMMARY

CONNECTICUT YANKEE QTOMIC POWER COMPANY, HQDDAM NECK PLANT DCtKET 50-213 JANUARY - DECEMBER 1996 A3 LYSIS AND LOWER LIMIT ALL INDICATOR LOCAll0N WITH HIGHEST ANNUAL MEAN CONTROL

OF QO TOTAL NUMBER Of LOCATIONS LOCATION #,

toCATIONS NRM MAY OF ANALYSES DETECTION MEAN DISTANCE MEAN MEAN (C) bt ED PERFORMED (ILD) (A)

(RANGE)(B)

AND DIRECTION (R ANGE )(B)

(R ANGE )(B) 1-131

-0.01 Loc # 30C 0.03 0.03 0

(-0.06 - 0.02) 7.6 MILES NW

( 0.00 - 0.07)

( 0.00 - 0.07) e CS-134 0.13

-0.00 LOC # 26 0.00 0.00 0

(-0.03 - 0.02) 1 MILES WW

(-0.02 - 0.02)

(-0.02 - 0.03)

CS-137 0.15 0.01 LOC # 26 0.02 0.02 0

(-0.02 - 0.04) 1 mites WNW

(-0.01 - 0.04)

(-0.02 - 0.05)

RA-226 0.10 LOC # 30C 0.40 0.40 0

(-0.25 - 0.86) 7.6 mites Nu

(-0.72 - 1.55)

TH-228 0.01 tot # 29 0.04 0.02 0

(-0.10 - 0.12)

O HILES N/A

(-0.02 - 0.12)

(-0.04 - 0.09)

I

Haddam Neck Station Annual Radiological Environmental Report 1996 NOTES FOR TABLE 3-1 A. For Ge(Li) measurements the MDL's - LLD + 2.33. For all others, MDL = 2 x o background. These MDL's are based on the absence of large amounts of interfering activity (excluding naturally occucring radionuclides). Deviations by about factors of 3 to 2

4 can occur.

The LLD is the smallest concentration of radioactive material in a sample that will be detected with 95% probability with a 5% probability of falsely concluding that a blank observation represents a "real" signal.

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

LLD =

E

V

2.22

Y

exp (-kat) where LLD is the lower limit of detection as defined above (as pCi per unit mass or volume)

S, is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (as counts per minute)

E is the counting efficiency (as counts per transformation)

V is the sample size (in units of mass or volume) 2.22 is the number of transformation per minute per picoeurie Y

is the fractional radiochemical yield (when applicable)

).

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

Analyses shall be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally background fluctuations, unavoidably saull sample j

sizes, the presence of interfering nuclides, or other uncontrollable circumstances may j

render these a priori LLDs unachievable. In such cases, the contributing factors will be identified and described in the Annual Radiological Environmental Operating Report.

B. Analytical results are handled as recommended by HASL (" Reporting of Analytical l

Resultsfrom HASL," letter by Leo B. Higginbotham) and NUREG/CR-4007 (Sept.1984).

Negative values were used in the determination of mean.

C. Nonroutine reported measurements (NRM's). These are results of samples that exceed the f

I report levels of Table E-2 of the Radiological Effluent Monitoring Manual.

S_17 j

fladdam Neck Station Annual Radiological Environmental Report 1996 D. First number is the number ofindicator measurements, the second is the number of control measurements.

3 E. Assuming 270 m / paper 3

F. Assuming 1080 m G. LLD for leafy vegetables.

H. LLD from the end of the sample period.

l ll 3

e LIA

Haddam Neck Station Annual Radiological Environmental Report 1996 3.2.

Data Tables The data reported in this section are strictly counting statistics. The reported error is two times the standard deviation of the net activity. Unless otherwise noted, the overall error (counting, sample size, chemistry, errors, etc.) is estimated to be 2 to 5 times that listed.

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

Data are given according to sample type as indicated below.

1.

Gamma Exposure Rate 2.

Air Particulates, Gross Beta Radioactivity 3.

Air Particulates, Weekly I-131 4.

Air Particulates,QuantitativeGamma Spectra 5.

Air Particulates, Quarterly Strontium *

6. Soil' 7.

Milk - DairyFarms 8.

Milk - Goat Farms 9.

Pasture Grass

10. WellWater j

11. ReservoirWater*

12. Fruits & Vegetables

13. Broad Leaf Vegetation

14. River Water

15. Bottom Sediment

16. Shellfish

17. Fish

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

1 15

LilCUI YANKEE IW6 TABLE 1 PAGE 3-16 i

MONTHLY GAMMA EXPOSURE RATE (UR/itR)

L0 CATIONS DIOD 1

2 3

4 5

6 7

8 9

10 11C u 96 A 6.4

.1 5.6

.1 6.3

.0 6.1

.2 7.1

.1 5.9

.1 6.0

.0 7.5

.5 7.1

.1 8.0

.1 7.9

.1 8 96 7.1

.1 6.8

.3 7.2

.1 ' 6.8

.0 7.9 0

6.8

.1 6.6

.2 8.5

.1 7.4

.0 8.8

.1 8.8 0

f96 7.3

.0 6.8

.1 7.1

.2 6.6

.2 8.3

.1 6.9

.2 7.1

.0 8.3

.0 7.7

.0 8.8

.2 8.8

.2 R 96 7.3

.2 7.0

.1 7.2

.1 7.0

.1 8.1

.3 7.0

.0 6.7

.0 8.9

.1 7.4

.0 9.0

.3 8.7

.0 Y 96 7.4

.0 7.0

.2 7.2

.1 6.6

.1 8.3

.1 7.0

.1 8.5

.1 7.7

.2 8.9

.2 9.1

.1 96 7.3

.0 7.1

.3 7.2

.2 6.8

.0 8.1

.3 6.9

.2 6.4

.2 8.7

.3 7.4

.1 8.7

.1 7.6

.0 7.1

.2 7.0

.1 6.8

.1 8.3

.1 7.0

.2 7.3

.1 8.6

.1 7.6

.0 8,7

.1 8.9

.1 f96 4 96 7.5

.0 7.1

.0 7.3

.2 7.0 0

8.3

.1 7.3

.2 6.8

.2 8.8

.3 7.5

.2 8.6

.0 9.0

.0 P 96 7.7

.2 7.2

.3 7.2

.0 6.7

.1 8.4

.1 7.0

.1 8.5

.2 7.5

.2 8.9

.1 9.0

.0

t 96 7.2

.0 6.8

.1 7.2

.0 7.1

.1 7.9

.1 7.0

.3 6.7

.1 8.7

.1 7.5

.2 9.0

.2 8.7

.1

V 96 7.4

.0 7.0

.1 7.0

.1 6.6

.1 8.0

.0 6.9

.3 7.0

.0 8.4

.0 7.7

.2 9.2

.3 8.8

.1

'C 96 7.1

.1 6.8

.0 7.2

.0 6.9

.1 7.6

.1 6.7

.0 6.6

.1 8.7

.1 7.4

.1 9.0

.2 8.6

.1 iRIOD 12C 13C 14C 40X 41x 42x 43x 44x 45x 46x 47x pH 96 6.6

.2 6.2

.2 7.3

.0 6.7

.0 5.3

.0 8.6

.1 6.8

.1 6.5

.0 8.5

.3 6.1

.2 6.2

.1 l'8 96 7,2

.3 6.4

.2 8.5

.3 7.4

.1 5.9

.1 9.4

.5 7.9

.1 7.3

.1 9.9

.2 7.3

.0 7.8

.2 R 96 6.9

.7 6.9

.1 8.7

.0 12.8

.5 8 6.6

.0 9.8

.2 8.1

.1 7.3

.0 10.3

.2 7.4

.0 8.0

.2 R 96 7.4

.2 6.7

.1 8.7

.0 7.5

.0 7.0

.0 9.9

.6 8.2

.0 7.5

.1 10.6

.2 7.6 11 8.8

.3

.Y 96 7.1

.2 6.7

.0 9.1

.0 7.1

.1 6.9

.1 10.1

.1 8.5

.1 7.6

.0 10.3

.0 7.2

.2 8.4

.0 4

I 96 7.3

.2 6.5

.1 8.8

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.3 8.4

.1 7.7

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.2 96 6.9

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.2 9.0

.2 7.2

.2 6.9

.2 10.3

.1 8.5

.2 7.6

.0 10.2

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.3 8.2

.0 G 96 7.6

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.1 8.8

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.2 7.6

.0 10.5

.3 8.6

.1 7.9

.1 10.2

.1 7.4

.0 8.6

.1 P 96 6.9

.1 6.8

.1 8.9

.1 7.1

.0 7.5

.4 10.4

.1 8.7

.0 7.8

.0 10.2

.2 7.3

.1 8.4

.1 7

I 96 7.4

.2 6.6

.1 8.6

.1 7.3

.0 7.3

.2 9.7

.3 8.4

.1 7.6

.0 10.1

.1 7.4 0

8.3

.3 BW 96 7.3

.0 6.7

.0 8.8

.0 6.9

.0 6.7

.2 9.8

.2 8.3

.1 7.4

.1 10.1

.2 7.2

.1 7.9

.0 IC 96 7.4

.1 6.5

.2 8.3

.0 8.4

.0 7.1

.2 9.5

.5 8.2

.1 7.4

.0 9.9

.3 7.3

.1 7.9

.2 s

N

Values listed are the average of two TLDs.

jErrors tisted are 1 sigma.

Low exposures in January are due to substantial snow cover and its resut ting shielding ef f ect.

A

-B: Radiography was being performed near the intake structure.

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i This page left blank intentionally.

I' 1 I

3-25

GCIICUI Y ACKEE 1996 TABLE F PAGE 3-26 DalRY MILK (PCI/L)

COLLECTION ifl0N DATE SR-89 SR-90 I-131 CS-13+

Cs-137 BA-140 LA-140

(+/-)

(+/+)

9 01/10/96 0.05 0.11

-0.5 2.5 1.2 2.7 3

5 3.8 5.5

-0.01 0.10

-0.4 5.6

-1.9 3.6 2

4 2.0 4.2 9

02/07/96 9

03/12/96 2.1 3.4

-0.1 0.9

-0.03 0.07

-2.9 3.0 0.9 3.2 0

5 0.0 5.6

'9 04/09/96-

-0.04 0.06 0.7 3.8 1.9 3.1

-2 3

-2.1 3.9 0.08 0.15 1.6 4.2 1.4 2.4 0

5 0.0 5.3 9

05/07/96 9

06/12/96 1.5 4.4 O!O 0.8 0.08 0.11

-1.1 2.8 0.1 3.4

-1 5

-1.4 5.6

-0.02 0.07

-1.1 2.3 1.3 2.7

-0 3

-0.3 3.2 u9 07/10/96 09 08/07/96

-0.01 0.09 1.8 2.2 2.0 2.2 1

3 1.1 3.2 09 09/10/96

-2.3 4.2 0.7 1.0 0.02 0.05 0.3 2.0 1.6 2.3

-1 2

-1.5 2.8 0.05 0.11 0.4 2.3

-0.7 2.9

-2 4

-2.6 4.3 B9 10/08/96 09 11/06/96 0.01 0.08

-0.5 2.7 2.0 3.3 0

5 0.0 5.3 09 12/11/96

-4.8 4.0

-0.2 0.9

-0.01 0.05

-0.2 2.1 0.0 2.2

-0 4

-0.4 4.8 10 01/10/96 0.02 0.04 1.9 2.7 2.4 3.0 4

6 4.7 6.4 93 02/07/96 0.04 0.13

-2.1 2.8 5.4 3.7 1

4 1.0 5.1 10 03/12/96 3.1 3.2 1.8 0.9

-0.01 0.04 0.2 3.2 2.3 2.8 0

5 0.6 5.6 80 04/09/96

-0.02 0.06

-1.0 2.2 3.5 3.5 1

3 0.9 3.6 20 05/07/96 0.06 0.13

-0.2 3.9 1.8 2.5

-3 3

-2.9 3.9 20 06/12/96 3.3 4.6 0.8 0.8 0.04 0.08 3.2 5.4 5.4 5.0 5

6 5.4 7.3 20 07/10/96 0.05 0.09

-0.2 1.9 2.7 2.5 0

3 0.6 4.0 20 08/07/96 0.10 0.13

-1.1 2.6 5.5 4.5 4

6 4.7 6.9 20 09/10/96 0.6 4.4 2.2 1.0 0.03 0.07 1.8 1.7 4.1 3.3 0

3 0.1 3.2 0.05 0.12

-0.8 2.1 3.7 3.3

-3 4

-3.1 4.8 20 10/08/96 20 11/07/96 0.05 0.10 0.2 2.7 0.7 4.9 7

7 7.7 8.5 20 12/11/96

-3.7 4.4 1.4 1.0

-0.00 0.04 1.7 2.0 3.0 2.1

-1 3

-1.5 3.7 21 01/10/96

-0.04 0.07 0.5 4.3 2.9 2.6

-5 5

-5.2 5.7 21 02/07/96 0.08 0.18

-2.4 3.6

-0.8 3.3

-4 6

-4.2 6.9 21 03/12/96 2.7 3.0 0.4 0.8 0.01 0.13 1.3 2.1 1.1 2.1 2

3 2.8 3.8 0.00 0.10

-3.5 3.6 1.3 3.1 0

4 0.0 4.3 21 04/09/96 0.08 0.11 0.3 4.2 0.8 2.9 2

3 2.1 3.8

,21 05/07/96 21 06/12/96 2.5 4.6 0.7 0.9 0.03 0.11

-1.5 2.8 1.7 3.2 1

5 0.6 5.6

.21 07/10/96

-0.02 0.06 0.1 2.6 7.1 5.5 0

6 0.2 7.0

-0.04 0.08 0.7 1.9 4.9 3.6

-2 3

-1.7 3.0 21 08/07/96

' 21 09/10/96

-0.2 4.2 1.4 1.0 0.03 0.06

-1.2 2.5 4.3 3.2 0

3 0.4 3.8 21 10/08/96 0.06 0.12

-2.0 2.3 0.0 3.5 0

5 0.3 5.4 21 11/07/96

-0.03 0.03 0.8 2.6 2.4 3.0 1

5 0.9 5.4 21 12/11/96

-1.5 4.4 0.4 0.7 0.05 0.08

-0.8 1.6 2.0 1.8

-2 4

-2.0 4.1

.....-n.

m._..___

$10110UI YAIKEE 1996 TABLE 7 PACE 3-27 DAIRY MILK (PCI/L)

COLLECTION 2 TIC 3 DATE SR-89 SR-90 1-131 CS-134 CS-137 BA-140 LA-140

(+/-)

0.09 0.12

-0.6 4.4 2.8 2.2 2

5 1.9 5.7 i

22C 01/10/96 0.05 0.08

-0.5 2.0

-0.2 2.3 1

3 1.0 3.3 22C 02/07/96 22C 03/12/96 0.6 2.8 1.2 0.9 0.02.

0.10

-0.4 1.8 1.7 2.2 1

3 1.0 2.9 22C 04/09/96 0.03 0.11 2.6 2.9

-1.1 3.9

-4 6

-4.4 6.7 22C 05/07/96 0.01 0.07 2.5 5.8

-1.0 3.0

-1 3

-1.0 3.8 22C 06/12/96 0.5 4.8 1.2 1.0 0.08 0.09

-1.3 3.8 1.5 2.5 2

3 2.1 3.9

-0.04 0.06 1.4 1.9 1.2 2.1

-2 2

-1.8 2.8 22C 07/10/96

-0.01 0.06

-0.2 1.9

' 2.6 2.0

-2 3.

-2.8 3.2 22C 08/07/96 22C 09/10/96 0.3 4.4 2.3 1.1

-0.01 0.04 0.4 1.8 0.5 2.2 1

3 1.1 3.0 0.02 0.10 1.0 2.1 0.8 2.6

-0 3

-0.5 3.6 22C 10/08/96 22C 11/06/96 0.03 0.07

-0.0 5.3

-0.9 2.4 1

3 0.9 3.4 22C 12/11/96 0.9 5.4 1.4 0.9

-0.01 0.05

-0.4 2.1

-1.2 2.8

-4 5

-4.4 5.3 n

I 4

.r***.

m.

m

4ECilCUI YA.KEE 1996 IABLE 8 PAGE 3-28 5

GOAT *S MILK (PCl/L)

COLLECTION AIION DATE SR-89 SR-90 I-131 CS-134 CS-137 BA-140 LA-140

(+/-)

23C 01/10/96

-0.02 0.16 4.0 2.8 0.2 2.9

-0 6

-0.4 7.0 0.02 0.17 0.7 6.5 0.3 3.3

-4 4

-4.8 5.1 23C 02/07/96 23C 03/12/96 1.7 3.0 2.1 0.9

-0.07 0.10

-1.0 4.6 0.5 2.3

-1 4

-1.7 4.8

-0.03 0.09

-0.9 4.0 9.9 3.8

-2 5

-2.6 5.4 23C 04/09/96 23C 05/07/96

-0.01 0.09 4.2 7.2 6.0 4.7

-0 5

-0.3 5.5 23C 06/12/96

-1 5 7.0 0:8 1.0 0.04 0.12

-1.4 3.3 0.9 3.8

-1 5

-1.3 5.4 23C 07/10/96 n.04 0.15

-0.1 2.1 2.6 2.3

-1 3

-0.9 4.0 23C 03/07/96 0.06 0.13

-0.2 2.1 0.8 2.6 1

4 0.6 4.1 23C 09/10/96 A

-1.0 4.0 0.9 1.0 0.09 0.12

-1.0 2.4 6.8 4.6

-1 4

-1.0 4.6 24 03/12/96 B 3.6 3.4 4.4 0.9 0.10 0.13 0.2 4.9 10.7 3.8

-3 4

-3.5 4.8 24 04/09/96 0.03 0.11 1.5 4.6 10.6 6.1 1

7 1.4 8.1 24 05/07/96 0.00 0.09

-2.6 3.8 3.9 3.8

-0 6

-0.6 7.3 24 06/12/96

-1.3 6.6 7.6 1.3 0.07 0.13 0.8 6.9 9.2 5.2

-2 6

-2.1 6.8 24 07/10/96 0.01 0.10 2.4 2.2 7.4 3.3

-4 4

-4.5 4.4 24 03/07/96

-0.05 0.11

-0.9 2.0 6.3 3.5 2

4 1.8 4.5 24 09/10/96

-1.8 4.6 9.5 1.4 0.08 0.11

-0.7 2.5 14.8 4.8 4

5 5.0 5.5 24 10/08/96

-0.03 0.14 0.6 2.0 5.7 3.3 0

4 0.1 4.4 24 11/06/96

-0.03 0.08 0.1 2.1 11.2 3.8

-2 4

-2.6 4.4 24 12/11/96 1.6 5.6 7.4 1.4

-0.07 0.08 1.3 2.4 6.4 2.1

-0 4

-0.1 4.7 A: Goat milk was unavaltabte at location (23C). Oct. - Dec. Pasture grass sanpled when available.

B: ::aithtr goat milk nor pasture grass were available in Jan, or feb. at location (24).

.. _::.,.. _ _ s

SEclitui IANKEE 1996 TABLE 9 PAGE 3-29 PASTURE GRASS *

(PCl/G UET WT.)

COLLEcil0N 3T104 DATE BE-7 K-40 CR-51 MN-54 CO-58 IE-59

(+/-)

DC 10/08/96 1.61 0.17 6.34 0.45 0.04 0.07

-0.003 0.068 0.004 0.009 0.011 0.033 BC 11/06/96 A 3.45 0.31 6.43 0.62

-0.04 0.11 0.005 0.012

-0.012 0.013 0.007 0.042 i

COLLECil0N QTIC:3 DATE Co-60 ZN-65 2R-95 NB-95 RU-103 RU-106

(+/-)

23C 10/08/96

-0.003 0.009 0.023 0.023 0.002 0.015 0.002 0.009 0.002 0.008

-0.011 0.067 23C 11/06/96 A

-0.001 0.017

-0.025 0.034 0.010 0.021

-0.003 0.014 0.007 0.012

-0.061 0.120 COLLECTION

ATICit DATE I-131 CS-134 CS-137 BA-140 LA-140 CE-141

(+/-)

23C 10/08/96 0.000 0.010

-0.004 0.007 0.000 0.008

-0.024 0.017

-0.027 0.020

-0.004 0.009

'23C 11/06/96 A 0.000 0.006

-0.002 0.012 0.007 0.014

-0.013 0.020

-0.015 0.023

-0.012 0.013 CottECTION CAllON DATE CE-144 RA-226 TH-228

(+/-)

23C 10/08/96

-0.008 0.028 0.083 0.193 0.017 0.044

'23C 11/06/96 A 0.018 0.050 0.189 0.336 0.080 0.087 A Pssture grass was unavaltable as a goat milk substitute in December.

t

DCIICut YAhKEE 1996 IABLE 10 PAGE 3-30 WELL WATER (PCl/L)

CC1LECil0N

>I10 DATE K-40 CR-51 MN-54 C0-58 FE-59 C0-60 2N-65

(+/-)

15 03/13/96 17 42 1

2S

-0.7 2.5 0.6 2.9 2.3 8.7

-0.7 3.4 6.5 13.5 35 06/14/96

-12 37

-12 32 1.2 2.5 0.9 5.4 6.6 7.0

-2.0 2.9 1.0 5.8 B5 09/13/96

-6 19

-20 15 0.4 1.3

-0.3 1.3

-0.7 3.8 0.2 1.2 1.2 6.1 15 12/06/96

-1 23 1

18 0.1 1.4 0.7 1.4

-1.3 4.8 0.7 1.4 1.5 5.7 16C 03/18/96 12 41

-4 '

27

-0.5 2.4

-2.0 2.6 4.7 6.7 0.8 2.6

-1.4 5.2 16C 06/14/96 4

20

-12 14

-0.4 1.2

-0.5 1.3

-2.3 3.7 0.3 1.5 3.5 6.3 16C 09/13/96 6

24 4

15 0.1 1.1

-0.3 1.4

-0.4 3.7

-0.2 1.4 0.2 7.1 16C 12/06/96 20 18 6

15 0.2 1.0 0.8 1.2 3.6 4.0 0.9 1.2 3.4 4.2 COLLECTEON

.AIION DATE ZR-95 NB-95 RU-103 RU-106 I-131 CS-134 CS-137

(+/-)

15 03/18/96

-1.9 5.1

-0.2 3.5

-0.6 2.9

-13 27 5

6 1.1 2.9 0.3 2.9 15 06/14/96

-1.8 4.5

-3.3 6.4 1.3 3.2 13 23

-5 6

1.4 2.8

-1.3 3.1 15 09/13/96 0.5 2.1

-0.2 1.5

-0.6 1.4

-5 11

-0 4

-0.7 1.1

-0.3 1.4 15 12/06/96

-0.4 2.9

-0.5 1.9

-0.5 2.0

-5 12 0

8 2.3 3.7 0.6 1.4 16C 03/18/96

-3.6 3.6 2.7 5.8 0.6 2.6 11 23 1

6 0.7 2.8 2.6 2.6 16C 06/14/96

-0.6 2.0 0.0 2.5

-1.7 1.5 0

12 0

3

-0.4 1.3

-0.8 1.4 16C 09/13/96 1.6 2.4 2.7 3.3

-0.8 1.7 3

12 0

4

-0.4 1.3 0.7 1.4 16C 12/06/96

-1.1 2.0 0.5 2.5

-0.4 1.4

-0 9

-3 10

-1.5 2.1 0.4 1.0

- _ =

tCitCut YCM EE 1996 TABLE 10 PAGE 3-31 WELL WATER (PC1/L)

COLLECTIC3 IION DATE BA-140 LA-140 81-214 TH-228 H-3

(+/-)

3 03/18/96

-3 5

-3.1 5.4

-17.3 73.6

-8.7 10.5 w 502 3

06/14/96 1

5 1.3 5.3 15.6 81.6 2.1 10.9

-137 462 3

09/13/96 1

3 1.4 3.2

-5.2 44.5

-3.2 4.3 1523 571 5

12/06/96 3

5 3.0 5.2 83.6 34.1 0.0 4.8 864 498 6C 03/18/96 4

5 4.5 '

5.4 20.4 70.2 0.8 8.9

-291 458 6C 06/14/96 1

2 1.5 2.5 1.2 33.2 4.2 5.2 597 512 6C 09/13/96

-2 3

-2.4 3.4

-45.5 64.0 6.8 5.1 24 442 6c 12/06/96

-3 5

-3.2 5.4

-52.7 19.5

-0.3 3.9 199 442 w*M_ _ _

6m'M*

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tCIILui YACKEE 1996 TABLE 12 PAGE 3-33 FRUITS & UECETABLES (PCl/G WET WT.)

COLLECTION IEE3 DATE TYPE t-131 CS-134 CS-137 BA-140 LA-140 CE-141

(+/-)

7C 06/20/96 tETTUCE

-0.019 0.029 0.000 0.015 0.011 0.017 0.019 0.033 0.022 0.038

-0.004 0.019 7C 06/20/96 STRAWBERRIES 0.014 0.032

-0.010 0.016 0.004 0.013 0.004 0.027 0.005 0.031

-0.003 0.018

)7C 09/18/96 APPLES 0.017 0.021 0.009 0.011

-0.005 0.011 0.016 0.018 0.018 0.021

-0.002 0.013 ITC 09/19/96 CABBAGE 0.012 0.022

-0.013 0.012

-0.003 0.014

-0.019 0.024

-0.022 0.027

-0.003 0.014

'S 06/20/96 SPINACH 0.01$ 0.028

-0.004 0.014 0.013 0.016

-0.015 0.022

-0.017 0.025

-0.017 0.016

S 06/20/96 STRAW 8ERRIES

-0.003 0.030 0.006 0.014

-0.004 0.014 0.006 0.025 0.006 0.029

-0.001 0.017

?S 09/18/96 CABBAGE

-0.007 0.031

-0.003 0.016

-0.008 0.021

-0.014 0.030

-0.016 0.034

-0.001 0.019 5

09/19/96 APPLES

-0.003 0.022

-0.004 0.013

-0.003 0.014

-0.017 0.016

-0.020 0.013 0.013 0.017 COLLECTION 118 0 DATE TYPE CE-144 RA-226 TH-228 SR-89 SR-90

(+/-)

B7C 06/20/96 LETTUCE

-0.063 0.060 0.093 0.315

-0.017 0.064

-0.040 0.150 0.050 0.042 07C 06/20/96 STRAWBERRIES 0.000 0.063 0.335 0.457 0.009 0.070 0.090 0.150 0.024 0.036 17C 09/18/96 APPLES

-0.026 0.050

-0.180 0.376

-0.019 0.049

-0.027 0.110 0.028 0.028 i

07C 09/19/96 CABBAGE

-0.018 0.050 0.412 0.222

-0.037 0.058 0.091 0.110 0.059 0.028 25 06/20/96 SPINACH

-0.008 0.057 0.724 0.261 0.043 0.062 0.120 0.150 0.020 0.042 25 06/20/96 STRAWBERRIES 0.034 0.061

-0.022 0.462 0.064 0.070 0.110 0.300 0.014 0.048 25 09/10/96 CABBAGE

-0.007 0.068 0.137 0.458 0.002 0.074

-0.020 0.122 0.021 0.032 25 09/19/96 APPLES 0.010 0.059 0.126 0.405 0.034 0.041

-0.027 0.132 0.001 0.034 1

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(tCitCUI YANKEE 1996 TABLE 14 PAGE 3-36 RitfER WATER (PC1/L)

COLLECilON OTICJ DATE K-40 CR-51 MN-54 CO 58 FE-59 CO-60

(+/-)

39 02/05/96

-2 13 6

24

-0.5 0.8

-0.6 1.1

-0.9 4.2 0.6 0.8 28 03/06/96

-18 16

-14 26 0.7 1.0

-0.8 1.3 0.7 5.2

-0.1 1.1 28 08/05/96

-6 11

-5 19

-0.1 0.6

-0.5 0.9 0.9 3.3 0.2 0.7 X8 11/04/96

-6 to

-2 17

-0.3 0.6

-0.3 0.8 1.2 3.1

-0.2 0.6 30C 02/02/96

-10 17

-9 16

-0.2 0.9 0.5 1.1 3.1 4.1 0.6 1.1 30C 05/02/96

-1 11 2

11 0.3 0.6 0.2 0.8 1.8 2.5 0.5 0.7 30C 08/02/96

-16 25 3

30

-0.5 1.3 1.0 2.1

-2.7 6.8

-0.4 1.4 J20 10/22/96

-1 13

-4 13

-0.3 0.7

-0.0 0.9

-0.1 2.9 0.4 0.8 COLLECllON

ATION DATE 2N-65 2R-95 N8-95 RU-103 RU-106

!-131

(+/-)

28 02/05/96 0.0 2.2

-1.2 2.1

-0.3 2.2

-1.4 2.5

-8 8

78 64 28 05/06/96

-0.8 2.2

-1.2 2.5

-2.8 2.5

-2.0 2.1

-6 9

-82 76 20 00/05/96 0.3 1.4

-0.9 1.8 0.1 1.5

-0.5 1.7 1

7

-13 52

-28 11/04/96

-0.3 1.2 0.3 1.5 0.6 1.5

-0.2 1.6 0

6 2

41

'30C 02/02/96

-2.2 2.1

-1.1 2.0

-0.7 1.6

-1.1 1.6 1

9 7

14

30C 05/02/96

-1.1 1.4

-0.8 1.3

-0.5 1.0

-1.1 1.4 0

7 5

7

'30C 08/02/96 1.0 8.3

-0.6 3.6

-0.0 2.7

-2.3 2.8 3

15 2

20 30C 10/22/96

-1.1 1.5

-0.5 1.5 1.7 2.1

-1.1 1.2

-6 7

-4 13

cittui ENKEE 1996 TCBLE 14 PACE 3-37 RIVER WQTER (PCl/L)

COLLECTION M ION DATE CS-134 CS-137 BA-140 LA-140 RA-226 TH-228

(+/-)

28 02/05/96

-0.7 0.9

-0.5 0.9 0

13 0

15 14.5 32.7 0.7 3.4 72 8 05/06/96 0.3 1.8 0.8 1.0

-4 19

-5 22

-23.9 30.2 1.4 4.1 28 08/05/96

-0.6 0.6 0.4 0.7 1

10 1

12

-10.9 23.9 0.9 2.1 28 11/04/96

-0.2 0.6 e -0.5 0.6

-2 10

-3 11 0.4 28.6 1.8 2.3 30C 02/02/96

-0.8 2.0 0.5 1.0 3

6 3

6

-29.3 28.2

-3.0 3.9 30c 05/02/96

-0.4 0.7 0.2 0.7

-1 3

-18.0 20.8 1.0 2.5 30C 00/02/96

-3.4 4.0 0.2 1.8

-0 10

-0 12

-36.0 73.2

-5.0 6.4 30c 10/22/96 0.1 0.7

-0.1 0.8 1

5 1

5 8.3 34.0 0.1 3.0 COLLECilON

ATION DATE 1t-3

(+/-)

28 02/05/96

-198 474 20 05/06/96 20 481 28 09/05/96

-201 428 28 11/04/96

-265 452 30c 02/02/96 7

211 3CI 05/02/96

-93 489 30C 08/02/)6 242 513 30c 10/22/96

-95 473 5

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et

CIICut YONKEE 1996 TABLE 16 PACE 3-40 SHELLFISH (PCl/G WE! W1.)

COLLECTION 2 TIC OATE BE-7 K-40 CR-51 MN 54 CO-58 FE-59

(+/-)

27C 02/21/96

.043 0.184

-0.1 0.5 0.037 0.226

.008 0.020

.002 0.028 0.051 0.051 27C 05/17/96 0.078 0.279 0.4 0.7 0.044 0.291

.002 0.031 0.005 0.032 0.003 0.055 27C 08/15/96 0.245 0.297 0.4 0.7 0.041 0.436 0.029 0.031

.026 0.034

.018 0.077 27C 11/15/96

.006 0.260

' O.3 0.6

.305 0.294

.004 0.022

.017 0.024

.006 0.070 28x 02/21/96 0.018 0.133 0.3 0.3

.014 0.185

.003 0.023 0.010 0.027

.075 0.068 28x 05/17/96

.111 0.232

-0.2 0.4

.076 0.223

.006 0.024

.012 0.022 0.013 0.070 28x 08/15/96 0.231 0.271 0.2 0.7 0.114 0.341 0.027 0.034

.014 0.031 0.062 0.101 28x 11/15/96 0.066 0.220 0.3 0.6 0.175 0.335 0.005 0.037

.012 0.022

.012 0.098

'31 02/21/96

.250 0.213 0.2 0.6 0.018 0.227

.018

0. 0?'.

.003 0.029 0.037 0.075 31 05/17/96 0.199 0.272 0.2 0.5

.084 0.265

.006 0 032 0.014 0.026 0.011 0.069 31 08/15/96

.074 0.236 0.8 0.8 0.315 0.375

.uui 0.024 0.005 0.030 0.025 0.085 31 11/15/96 0.055 0.235 0.1 0.6

.110 0.321 0.001 0.030 0.003 0.029

.016 0.106 COLLEC110N lATIC DATE CO-60 ZN-65 2R-95 NB-95 RU-103 RU-106

(+/-)

2FC 02/21/96

.056 0.041 0.009 0.056 0.012 0.034

.006 0.025

.033 0.024

.132 0.258 27C 05/17/96 0.049 0.038 0.061 0.132 0.030 0.063 0.008 0.030

.019 0.040

.086 0.387 27C 08/15/96

.021 0.041

.006 0.042 0.017 0.046

.025 0.046

.032 0.045 0.308 0.348 27C 11/15/96 0.000 0.023 0.052 0.070

.026 0.049 0.002 0.037

.003 0.021 0.254 0.268 28x 02/21/96 0.002 0.030

.055 0.079 0.002 0,037 0.009 0.023

.018 0.021 0.040 0.202

' 20x 05/17/96

.015 0.032

.037 0.127

.015 0.043 0.017 0.033

.006 0.025

.056 0.251 28x OG/15/96 0.004 0.019

.080 0.081 0.030 0.058 0.008 0.037

.024 0.042

.249 0.333 28x 11/15/96

.012 0.018 0.005 0.075 0.015 0.059

.014 0.041

.024 0.029 0.043 0.257 31 02/21/96 0.010 0.030

.009 0.071 0.014 0.054

.007 0.025

.002 0.025 0.025 0.263 31 05/17/96 0.021 0.024

.047 0.086 0.036 0.040 0.023 0.031

.012 0.026 0.053 0.286 31 08/15/96 0.014 0.035

.041 0.106 0.068 0.074

.044 0.052

.012 0.045 0.098 0.278 31 11/15/96 0.008 0.045

.007 0.061 0.000 0.052 0.011 0.041 0.031 0.038 0.000 0.360 i

=-

-s.

.. m.

SECitCUT YAIKEE 1996 TABLE 16 PAGE 3-41 SHELLFISH (PCI/G WET UT.)

COLLECTION tilC2 DAIE An-110M 1-131 CS-134 CS-137 RA-226 YH-228

(+/-)

' 7C 02/21/96 0.001 0.033 0.013 0.030 0.007 0.024

.005 0.033 0.170 0.533 0.155 0.150 7C 05/17/96

.021 0.040 0.064 0.C56 0.013 0.039

.018 0.038 0.643 0.820 0.047 0.146 7C 03/15/96

.045 0.052 012 0.133

.003 0.030 0.017 0.037 0.778 1.302 0.265 0.211 7C 11/15/96 0.017 0.031

'.103 0.129

.016 0.021

.020 0.040 0.163 0.589 0.007 0.145 18x 02/21/96 0.004 0.027 0.009 0.023

.010 0.052

.005 0.019 0.600 0.635 0.110 0.114 18x 05/17/96

.014 0.038

.008 0.039 0.013 0.030

.017 0.030 0.028 0.522 0.222 0.134 E8x 08/15/96

.005 0.037 0.021 0.104 0.000 0.029

.024 0.029

.483 0.680 0.279 0.216 18x 11/15/96

.010 0.026

.031 0.123

.011 0.025

.007 0.034 0.185 0.864 0.117 0.105 31 02/21/96

.011 0.039 0.020 0.034 0.011 0.035 0.000 0.031 0.034 0.751 0.174 0.120 31 05/17/96 0.023 0.036

.001 0.042 0.018 0.035 0.034 0.036 0.328 0.725 0.165 0.199 31 08/15/96

.008 0.015

.067 0.140

.022 0.033

.031 0.036

.489 0.948 0.166 0.193 31 11/15/96

.010 0.04 8

.042 0.114

.031 0.023

.003 0.034 0.142 0.652 0.217 0.189

itCilwl YANKEt 1996 TABLE 17A PAGE 3-42 7!SH-BUttHE ADS (PCl/G WET UT.)

COLLECilDN hitC3 DA1E BE-7 K-40 CR-51 MN-54 C0-58 FE-59

(+/-)

?6 01/24/96

.099 0.194 2.4 0.8 0.121 0.177 0.010 0.025 0.006 0.017 0.017 0.074 26 04/18/96 0.052 0.198 3.3 0.9

.135 0.263

.029 0.025 0.013 0.028

.010 0.072 26 07/11/96

.119 0.210

, 2.8 0.8

.091 0.214 0.017 0.021 0.009 0.033 0.065 0.090 26 10/23/96

.061 0.166 3.8 1.2

.019 0.202

.004 0.028 0.010 0.028

.015 0.100 E

01/12/96

.101 0.185 3.5 0.9 0.005 0.206 0.008 0.020

.002 0.023 0.028 0.079 29 04/18/96

.006 0.236 3.2 0.8 0.111 0.209 0.020 0.022

.016 0.025 0.021 0.077 29 07/11/96 0.054 0.155 3.0 1.0 0.000 0.230 0.002 0.022

.004 0.025 0.013 0.367 29 10/23/96 0.118 0.269 3.0 1.3 0.124 0.219 0.005 0.030

.006 0.028

.024 0.046 30C 01/24/96 0.068 0.236 2.8 0.9 0.056 0.257 0.009 0.027

.004 0.022 0.050 0.088 30C 04/18/96

.084 0.168 3.4 0.8

.114 0.286

.005 0.023 0.007 0.028

.029 0.095 30C 07/11/96 0.198 0.227 3.5 0.9 0.179 0.269 0.000 0.029

.018 0.026 0.045 0.085 loc 10/23/96

.022 0.264 3.7 1.4

.066 0.270

.007 0.029

.004 0.034 0.056 0.117 CGttECTION

ATION DATE CO 60 ZN-65 2R-95 NB-95 Ru-103 Ru-106

(+/-)

26 01/24/96

.003 0.030 0.000 0.052

.033 0.038 0.001 0.027

.004 0.019 0.068 0.185 26 04/18/96

.007 0.031

.042 0.066

.049 0.050

.011 0.036 0.002 0.028

.244 0.256 26 07/11/96 0.007 0.020 0.017 0.065

.016 0.043 0.005 0.029

.013 0.026 0.000 0.185 26 10/23/96

.002 0.024

.032 0.089

.034 0.042

.011 0.021 0.006 0.014 0.031 0.314 29 01/12/96 0.003 0.021

.015 0.069 0.005 0.039

.002 0.028

.010 0.024

.007 0.209 l

29 04/18/96 0.020 0.031 0.033 0.069 0.068 0.050

.006 0.029

.007 0.026 0.142 0.220 29 07/11/96 0.003 0.038 0.021 0.060

.001 0.042 0.015 0.035 008 0.029

.030 0.248 29 10/23/96

.010 0.021

.011 0.073 0.023 0.063

.003 0.032 0.015 0.027

.161 0.241 30C 01/24/96 0.013 0.037

.045 0.071 0.009 0.036

.014 0.029

.013 0.028

.065 0.237 30C 04/18/96

.002 0.029

.059 0.076

.025 0.043 0.029 0.035 0.006 0.029 0.127 0.265

, 30C 07/11/96 0.003 0.028

.022 0.052

.029 0.053

.024 0.029 0.007 0.028 078 0.202 30C 10/23/96 0.015 0.045

.042 0.086 0.015 0.067

.027 0.035 0.002 0.024 0.110 0.220

$atfish was samplect in the first three quarters of 1996 in place of buttheads.

~

. ~

- + " - - - -

ICIICul YANKEE 1996 TI.8tE 17A PAGE 3-43 ftSH-BULLHEths (PCl/G WET WT.)

COLLECil0N ti tC;3 DATE AG-110M I-131 CS-134 CS-137 RA-226 TH-228

(+/-)

6 01/24/96

.004 0.026 0.013 0.037

.001 0.025 0.015 0.022

.201 0.379

.003 0.097 6

04/18/96

.008 0.039 0.005 0.062 0.021 0.031 0.015 0.029 0.3 73 0.767

.034 0.107 6

07/11/96

.008 0.031

.016 0.054 0.005 0.025 0.035 0.032

.158 0.765 0.001 0.102

[6 10/23/96 0.000 0.038

'.002 0.035

.004 0.033 0.035 0.042

.168 0.796

.100 0.135 29 01/12/96 0.000 0.033

.032 0.065

.006 0.030 0.000 0.025 0.082 0.447 0.068 0.128 0

04/18/96 0.022 0.030 0.003 0.055 0.004 0.027 0.035 0.035 0.033 0.568

.011 0.097 29 07/11/96 0.006 0.028 0.023 0.066

.027 0.029

.007 0.030 0.860 0.864 0.036 0.111 29 10/23/96 0.005 0.035

.012 0.021 0.011 0.030 0.037 0.038 0.272 0.732

.023 0.111 30C 01/24/96

.005 0.040 0.000 0.046

.016 0.025 0.050 0.034

.020 0.635 0.020 0.136 30C 04/18/96 0.013 0.035 0.006 0.0 73 0.000 0.035 0.030 0.031 0.841 0.568 0.042 0.104 30C 07/11/96

.006 0.029 0.030 0.058

.015 0.026 0.014 0.034

.724 0,642

.032 0.110 30C 10/23/96 0.012 0.050 0.011 0.040 0.000 0.034

.022 0.041 0.164 0.853 0.091 0.114 Catfish was sanpled in the first three quarters of 1996 in place of buttheads.

GCitCUI VCNKEE 1996 1ABLE 17B PAGE 3-44 FISH 0THER (PCl/G WET WT.)

001tECTIC3

> TIC 3 DATE TYPE BE-7 K-40 CR-51 MN-54 Co-58 FE-59

(+/-)

'6 03/07/96 BASS

-0.18 0.31 2.85 0.96

-0.12 0.31

-0.017 0.033 0.011 0.038

-0.017 0.095 6

04/30/96 HERRENG 0.04 0.20 3.07 0.84 0.07 0.19 0.015 0.027 0.001 0.024 0.010 0.083 07/11/96 PERCH 0.01 0.16 3.19 0.92 0.03 0.22

-0.005 0.024

-0.008 0.022 0.019 0.069

!6 10/23/96 PERCH 0.20 0.28 2.15 1.09

-0.04 0.27

-0.018 0.038

-0.002 0.038 0.012 0.116 E9 01/24/96 CARP 0.2l 0.21 2.24 0.75

-0.03 0.19 0.015 0.024

-0.012 0.026 0.003 0.098 9

04/18/96 CARP 0.02 0.19 2.44 0.76

-0.27 0.26 0.007 0.019 0.005 0.029 0.059 0.074 07/11/96 CARP

-0.03 0.20 2.44 0.91 0.04 0.26 0.032 0.031

-0.033 0.027

-0.031 0.092 10/23/96 CARP

-0.13 0.17 2.42 1.18

-0.16 0.18 0.005 0.022 0.010 0.027 0.006 0.088 01/24/96 CARP 0.06 0.21 3.36 0.96 0.04 0.22 0.010 0.023

-0.014 0.024

-0.019 0.094 C

04/30/96 HERRING

-0.11 0.20 2.78 0.85 0.06 0.22

-0.007 0.012 0.005 0.017 0.005 0.076 C

07/11/96 PERCH 0.12 0.23 2.85 0.95 0.15 0.23

-0.009 0.017

-0.001 0.021

-0.020 0.078 10/30/96 A HlXTURE

-0.07 0.18 3.48 1.02

-0.07 0.23

-0.010 0.025

-0.005 0.025

-0.002 0.109 COLLECTION 2 TION DATE TYPE CO-60 2N-65 ZR-95 NB-95 RU-105 RU-106

(+/-)

(*/-)

(+/-)

26 03/07/96 BASS 0.023 0.043

-0.036 0.082

-0.037 0.060 0.031 0.087

-0.002 0.041 0.182 0.304 26 06/30/96 HERRING

-0.011 0.029 0.007 0.060

-0.032 0.044 0.003 0.026 0.000 0.022

-0.011 0.269 26 07/11/96 PERCH 0.009 0.041

-0.008 0.062

-0.026 0.036

-0.012 0.026 0.014 0.023

-0.026 0.222 26 10/23/96 PERCH

-0.038 0.040 0.007 0.075 0.028 0.043

-0.004 0.031 0.015 0.030

-0.136 0.2 73 29 01/24/96 CARP 0.010 0.014 0.017 0.064 0.041 0.045 0.006 0.022

-0.002 0.023

-0.108 0.192 29 04/18/96 CARP

-0.019 0.025

-0.014 0.062 0.021 0.057

-0.015 0.026

-0.009 0.029

-0.134 0.238 29 07/11/96 CARP 0.000 0.022 0.037 0.064

-0.072 0.050

-0.007 0.032

-0.022 0.023

-0.178 0.238 29 10/23/96 CARP 0.000 0.028

-0.012 0.053 0.074 0.067

-0.030 0.034

-0.002 0.020 0.086 0.214 30C 01/24/96 CARP 0.003 0.036

-0.054 0.068

-0.018 0.040

-0.016 0.031

-0.011 0.018

-0.025 0.265 30C 04/30/96 HERRING 0.015 0.030

-0.079 0.069

-0.033 0.045 0.012 0.023 0.008 0.021

-0.055 0.233

30C 07/11/96 PERCH 0.000 0.038

-0.039 0.078 0.020 0.039 0.025 0.038 0.005 0.026 0.213 0.262 30C 10/30/96 A MIXTURE

-0.002 0.033

-0.002 0.065 0.038 0.050 0.017 0.024

-0.010 0.023 0.034 0.260 S: White Perch and Pike.

1

tCilwl YANKEE 19'J6 TABLE 178 PACE 3-45 FISH-OTHER (PCI/G WET WT.)

COLLEClion tilON DATE TYPE AG-110M I-131 CS-134 CS-137 RA-226 TM-228

(+/-)

r6 03/07/96 BASS 0.021 0.055

-0.009 0.071

-0.019 0.041 0.001 0.042 0.599 0.740 0.013 0.137 h6 04/30/96 ItERR!NG 0.009 0.036

-0.005 0.033

-0.015 0.027

-0.010 0.029 0.000 0.706

-0.021 0.087 E6 07/11/96 PERCH 0.008 0.020

-0.044 0.059 0.010 0.022 0.000 0.024 0.162 0.490 0.010 0.086

!6 10/23/96 PERCH 0.027 0.051

-0.012 0.037 0.019 0.036 0.044 0.049 0.146 0.862

-0.005 0.156 g

01/24/96 CARP

-0.029 0.036 0.015 0.042 0.014 0.027

-0.024 0.032

-0.150 0.523 0.042 0.091 w

04/18/96 CARP

-0.020 0.029

-0.057 0.071 0.002 0.059

-0.012 0.025

-0.054 0.696 0.051 0.094 E

07/11/96 CARP 0.004 0.035

-0.026 0.071 0.000 0.026

-0.001 0.030

-0.251 0.591 0.013 0.093 B

10/23/96 CARP 0.005 0.042

-0.022 0.034

-0.025 0.033 0.006 0.028 0.129 0.635 0.119 0.135 30C 01/24/96 CARP 0.000 0.044 0.017 0.038 0.020 0.027

-0.001 0.031 0.578 0.488

-0.013 0.118 30C 04/30/96 HERRING 0.026 0.039 0.010 0.036

-0.005 0.028 0.010 0.029 0.691 0.467 0.070 0.104 30C 07/11/96 PERCri 0.023 0.038 0.071 0.066 0.028 0.034 0.027 0.034 0.082 0.525 0.000 0.094 BOC 10/30/96 A MIXTURE 0.003 0.035 0.059 0.076 0.000 0.029 0.021 0.028 1.553 0.655

-0.036 0.105 1

a: White Perch arxi Pike.

i

... ~ ~. -

!~

Haddam Neck Station Annual Radiological Environmental Report 1996 I,

i 4

4 4

DISCUSSION OF RESULTS m

i This section summarizes the results of the analyses of environmental media sampled.

j NUSCO has carefully examined the data throughout the year and has presented in this section all cases where plant related radioactivity could be detected and compared the results with j

previous environmental surveillance data. Few impacts of plant operation were observed in environmental media during 1996. Subsections contained describe each particular media or potential exposure pathway. The dose commitments from these plant-related exposures is 4

insignificant and is explained in Section 5.

Naturally occuning nuclides such as Be 7, K-40, Ra-226 and Th-228 were detected in I

numerous samples.

Be-7, which is produced by cosmic processes, was observed l

predominantly in airborne and vegetation samples. Ra-226 and Th-228 results were variable

)

and are generally at levels higher than plant related radionuclides.

Cs 137 and Sr-90 were observed at levels similar to those of past years. In general, the detectable levels of Cs-137 and Sr-90 were the result of atmospheric nuclear weapons testing J

of years past.

4.1.

Gamma Exposure Rate (Table 1)

Gamma exposure from all sources including cosmic and other natural and artificial radioactivity is measured over periods of approximately one month using CaF (Mn) 2 thermoluminescent dosimeters (TLDs) These dosimeters are strategically placed at a number of on-site locations, as well as at inner and outer off-site locations. Glass bulb type TLDs such as these, are subject to inherent self-irradiation which has been experimentally measured for each dosimeter. Tb results, shown in Table I have been adjusted for this effect. The range of this correct on for field dosimeters is 0.4 R/hr to 2.8 R/hr, with a mean of approximately 1 R/hr.

The exposure rate measurements exhibit the same trends as those of past years. These measurements demonstrate the general variations in natural background radiation between the various on-site and off-site locations and include gamma exposure from all sources including cosmic, terrestrial, and artificial radioactivity. Evaluation of the data reveals a decrease in background at all locations in the month of January. This is caused by the large snowfall experienced and its resultant shielding effect. One on-site location within the plant's site boundary indicates positive plant effects.

The location near the intake structure (location 40X) shows a noticeable increase in exposure during the months of March and June. During these months the station was performing radiography tests in a remote area near the intake structure. The increase in gamma exposure during these months is attributable to this activity. Due to the very localized effect, there was no measurable dose commitment to the public.

n e

e

~.

i Haddam Neck Station Annual Radiological Environmental Report 1996 4.2.

Air Particulate Gross Beta Radioactivity (Table 2)

Air is continuously sampled at seven inner ring and two outer ring locations by passing i

it through glass fiber particulate filters. These are collected weekly and analyzed for gross beta radioactivity. Results are shown on Figure 4-1 and Table 2.

l Gross beta activity remained at levels similar to that seen over the last decade. Inner and outer ring monitoring locations showed no significant variation in measured activities. This indicates that any plant contribution is not measurable.

i Figure 4-1 CY AIR PARTICULATE pCl/m3 1996 Gross Beta Radioactivity J

0.03

--+-Indicators

-1E-Controls 0.025 1

0.02 v

0.015 0.01 4

Jan Feb Mar Apr May Jun Jul Aug sep oct Nov Dec i

i t

4.3.

Airborne lodine (Table 3) j Charcoal cartridges are included at all of the air particulate locations for the collection ofiodine. No detectable levels ofI-131 were seen in the 1996 charcoal samples. This is confirmed by the absence ofI-131 in any of the milk samples. Milk from cows and goats is a much more sensitive indicator ofI-131 presence in the environment.

4.4.

ir Particulate Gamma Spectra (Table 4A.D) 4 The weekly air particulate filters are composited quarterly for gamma spectral analyses. The results, as shown in Tables 4A-4D, indicate the presence of naturally occurring Be-7, which is produced by cosmic processes. No positive results were observed for all the other isotopes. These analyses indicate the lack of plant effects.

l

Haddam Neck Station Annual Radiological Environmental Report 1996

4. 5.

Air Particulate Strontium (Table 5)

Table 5 in past years was used to report the measurement of St-89 and Sr-90 in quarterly composited air particulate filters. These measurements are not required by the Radiological Effluent Monitoring Manual (REMM) and have been discontinued.

Previous data has shown the lack of detectable station activity in this media. This fact, and the fact that milk samples are a much more sensitive indicator of fission product existence in the environment, prompted the decision for discontinuation. In the event of widespread plant related contamination or special events such as the Chemobyl incident, these measurements may be made.

4. 6.

Soil (Table 6)

Soil samples are special samples not required by the REMM. Previous data has shown the lack of detectable station activity in this media resulting in discontinuing these samples. In the event of widespread plant related contamination or special studies, these sample would be collected.

4. 7.

Cow Milk (Table 7)

Analysis of milk samples is generally the most sensitive indicator of fission product existence in the terrestrial environment. This, in combination with the fact that consumption of milk is significant, results in this pathway usually being the most critical from the plant release viewpoint.

This pathway also shows measurable amounts of nuclear weapons testing fallout. Therefore, this media needs to be evaluated very carefully when trying to determine if there are any plant effects.

Previous data over many years has shown the lack of station related strontium activity in this media. Therefore, the strontium analysis frequency has been reduced from monthly to quarterly. The monthly samples collected within each quarter from each sample location are composited and analyzed at the end of each quarter.

Sr-90 was observed in nearly a quarter of all samples; all results were below 2.3 pCill.

Detailed analysis of previous data has concluded that these levels of Sr-90 are from weapons testing and are not plant related (see Section 6.0 for details to this argument).

Sr-89 was not detected in any of the samples above its MDL. This isotope is usually released from the plant in quantities similar to those of St-90, indicating that Sr-90 is the result of weapons testing and not from the plant. Sr-89 is only detected in these samples,during episodes of fresh fallout from weapons testing.

Cs-137 usually shows the same tendencies as Sr-90. Results for 1996 are similar to those seen for nearly the past two decades. Detailed analysis has concluded that these concentrations are most likely the result of fallout from previous weapons testing (see

-j Section 6.0 for details). Cs-134 was not observed above detectable levels in any of the s

samples, further confirming the absence of plant effects. Although not listed on Table 7, the only other nuclide detected by gamma spectrometry was naturally occurring K-l l

40.

9

Haddam Neck Station Annual Radiological Environmental Report 1996 i

All samples showed a lack of I-131 detectable above the MDL of 0.5 pCi/1. These results are consistent with previous year's results.

Ii 4.8.

Goat Milk (Table 8)

,ll t4 Depending on the feeding habits, goat milk can be a more sensitive indicator than cow ll milk of fission products in the environment. This is due to the metabolism of these

'(

animals. Similar to the results of the cow milk samples, these show measurable amounts of nuclear weapons testing fallout, i

Sr-90 and Cs-137 were observed in most samples. In samples taken between 1977 -

1983 the control location had significantly higher values than the indicator location.

This difference decreased substantially with a change in farms in 1983. Variability is caused by many factors, including feeding habits (amount of stored feed, etc.), soil 4

characteristics, farming practices (tillage and quality of fertilization and land management), and feed type. For a complete discussion of the problem see Section 6.0. As typical of periods lacking fresh fallout, no detectable Sr-89 was seen in these samples. The absence of St-89 and Cs-134 confirm that the levels of Sr-90 and Cs-137 are caused by previous weapons fallout.

All samples showed a lack ofI-131 detectable above the MDL of 0.5 pCi/1. These results are consistent with previous years' results. The only occasions when this nuclide has been detected are those immediately following atmospheric testing of nuclear weapons and the Chernobyl accident.

4.9.

Pasture Grass (Table 9)

When the routine milk samples are unavailable, samples of pasture grass are required as a replacement. These samples may also be taken to further investigate the levels of radioactivity in milk. In this year's samples as in those of past years, no plant effects were seen in this media.

4.10. Well Water (Table 10)

Activity in this media results from either soluble plant effluents permeating through the ground or the teaching of naturally occurring nuclides from the soil and rock. As usual the on-site wells (location 15) exhibited plant related H-3 significantly above background levels. This plant effect results from the wells being located within an area influenced by the water in the discharge canal and H-3 having the ability to readily follow the flow of ground water. Off-site concentrations are much lower. This pathway does not result in any dose consequence since the water from these wells is I

used only in process streams at the station.

I The levels of H-3 detected in these samples show a slight decrease to previous years.

3 This is a trend that started back in cycle 17 (1992) due to the process of replacing i

stainless steel clad fuel with zircaloy clad fuel. Figure 10-1 shows the trend of H-3 l

measured in CY on-site wells. Of note in the figure is the higher levels of H-3

(

observed coincident with plant operations. During periods of shutdown, higher H->

Haddam Neck Station Annual Radiological Environmental Report 1996 i

levels are measured due to the increased volume of liquid processing that takes place during outages.

Figure 10-1 Trend of H-3 in CY Well Water g _ ( cycle 15 )

( cycle 16 )_

( cycle 17 ) { cycle 18 ) { cycle 19 )

6000

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f 90 -

5000 Y 60 l

L 4000 5 70

~-

g d 60

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k 3000g a

g 50 f1 o

v, 40 2000 '

.E 30 -- (

O l

hkN k N g

0

===0

~

$E$$S$55 E$$$55$$$$S 98989R989RSS989R989 Date h

iOperaial --*-H-3 Cmc.

% SS Cad i a

i 4.11. Reservoir Water (Table 11)

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

4.12. Fruits and Vegetables (Table 12)

This media did not show any plant effects. Concentrations of Sr-90 in these samples existed at levels comparable to past years and is due to fallout. Naturally, occurring K-40 was detected in all samples. Since there was no fresh fallout, no other nuclides were detected.

4.13. Broad Leaf Vegetation (Table 13)

Concentrations of Sr-90 and Cs-137 in these samples are at levels comparable to past years and are due to fallout. Historically, this media has shown early indication ofI-131 release from the plant from both unplanned releases and normal operations.

j Haddam Neck Station Annual Radiological Environmental Report 1996 a

Therefore, to enhance program monitoring effectiveness, samples of broadleaf vegetation are collected monthly during the growing season, May - October, even though requirements are to collect twice a year. No plant effects were observed in broadleafsamples.

Starting in 1997 the analysis of this media for strontium will be discontinued. Data from past years has shown the lack of station related strontium activity in this media.

In the event of widespread plant related contamination or special studies, this analysis could be resumed.

4.14. River Water (Table 14)

These samples are collected on a quarterly basis; the sampling procedure is different at the control and indicator locations. Six weekly grab samples are taken within each quarter and composited for the control station (Middletown - location 30C).

Continuous samples, collected for the entire quarter, are utilized at the indicator station (East Haddam Bridge - location 28).

Tritium is sometimes observed above background levels. When it does occur the level is attributable to plant operation. In 1996 no measurable level above background was detected. Because tritium only emits low energy beta particles and river water is not a source of drinking water, the dose consequence resulting from tritium is insignificant.

Fish consumption is the only media through which the population encounters dose from tritium in liquid effluents. The dose consequence of the tritium, although not routinely measured in fish, is calculated based upon the measured effluents and appropriate dispersion models (NRC approved computer code LADTAP). In order to verify these calculations, a special program of measuring tritium in fish samples had i;een performed. The result of these analyses indicated that the effluent calculations are conservative.

4.15. Bottom Sediment (Table 15)

No indications of plant related activity were observed. Cs-137 is present in both the q

indicator and the control locations at levels similar to past years. The comparable levels between indicator and control samples imply that the Cs-137 observed is due to previous weapons fallout.

4.16. Shellfish (Table 16)

No activ'ity was observed except for the naturally occuning radionuclides. This media is not a source of consumption.

4.17. Fish (Tables 17A and 178) 4.17.1. Bullheads (Table 17A)

Cs-137 was observed in one control location sample at a level similar to past years. Because it is a control location and due to the absence of Cs-134, the

Haddam Neck Station Annual Radiological Environmental Report 1996 Cs-137 is not plant related but is due to weapons testing fallout from years past.

No other activity was observed except for the naturally occurring radionuclides. The dose consequences of plant related activity when detected are discussed and the results are shown in Section 5.0.

4.17.2. Perch and Other Types (Table 17B)

These fish samples exhibit similar results as the bullhead samples. The dose consequences of plant related activity when detected are discussed and the results are shown in Section 5.0.

I:

Haddam Neck Station Annual Radiological Environmental Report 1996 5

OFF-SITE DOSE EQUIVALENT COMMITMENTS 1

The off-site dose consequences (dose equivalent commitments)of the stations' radioactive liquid l

and airborne effluents have been evaluated using two methods. The first method utilizes the i

stations' measured radioactive discharges as input parameters into conservative models to i

simulate the transport mechanism through the environment to man. This results in the l

computation of the maximum doses to individuals and the 0 to 50 mile population dose. The l

results of these computations are submitted to the NRC in the Annual Radioactive EfRuent j

Report written in accordance with the Radiological Effluent Monitoring Manual, Section F.2.

The second method utilizes the actual measurements of the concentrations of radioactivity in i

various environmental media (e.g., milk, fish) and then computes the dose consequences resulting from the consumptionof these foods.

l

}

The first method, which is usually conservative (i.e., computes higher doses than that which j

actually occur), has the advantage of approximating an upper limit to the dose consequences.

This is important in those cases where the actual dose cannot be measured because they are so 4

i small as to be well below the capabilities of conventional monitoring techniques. For gaseous l

releases, no plant related detectable activity was observed in any sampling media. The only plant related activity observed in 1996 was H-3 in on-site well water. On-site well water is used for plant processing and services,it is not a pathway for human consumption. Therefore, for i

1996 no dose consequences for either gaseous or liquid releases can be calculated due to actual l

measurements of plant related radioactivity in the environment. The yearly doses reported as less than values for the second method in Table 5.1 correspond to activities at the minimum t

detectablelevel.

i The doses presented in Table 5.1 are the maximum doses to an individual for specific pathways l

to man. The calculations result in maximum total doses to an individual of: 0.36 mrem whole l

body to an adult,0.063 mrem to a teen's thyroid, and 0.09 mrem to a teen's liver. The calculated j

doses for all other locations and other age groups will be less than those shown.

f The average dose to an individual within 50 miles from the site using method 1 yields the j

following results for the period January - December 1996 for the average individual:

}

ANNUAL AVERAGE WHOLE BODY DOSE :

l DUE TO AIRBORNE EFFLUENTS = 0.00015 mrem

[;

DUE TO LIQUID EFFLUENTS = 0.000013 mrem j

Thus, it can be seen that the average whole body dose to an individualis much less than the maximum whole body dose to an individualas shown in Table 5.1.

l.

In order to provide perspective on the doses in Table 5.1, the standards for 1996 on the allowable j

maxinuun dose to an individualof the general public are given in 40CFR190 as 25 mrem whole body,75 mrem thyroid, and 25 mrem any other organ. These standards are a fraction of the l

normal background radiation dose of 284 mrem per year and are designed to be inconsequential l

in regard to public health and safety. Since plant related doses are even a smaller fraction of natural background,they have Insignificantpublic health consequences. In fact, the plant related 4

)

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...._._..___-__m

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

)'

i j

Haddam Neck Station Annual Radiological Environmental Report 1996 i

j doses to the maximum individual are less than 10% of the variation in natural background in j

Connecticut.

d i

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i 1

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4 i

4 k

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Haddam Neck Station Annual Radiological Environmental Report 1996 TABLE 5.1 COMPARISON OF DOSE CALCUL ATION METIIODS IIADDAM NECK STATION 1996 Annual Dose (millirem) 0 U

Pathway Individ'ual Organ Method 1 )

Method 2 '

dirborne Effluents 1.

Extemal Gamma Dose Max. Ind.

Whole Body 0.29 ND*

2.

a. Inhalation Adult Thyroid 0.053 N A D*,<0.6

Teen 0.054 Child 0.048 hfant 0.023

b. Vegetables Ju!:

Thyroid 0.0075 NAD Icen 0.0085 C'tild 0.013

c. Goat's Milk A dult Thyroid 0.0002 N AD,< l.3 Tten 0.0003 Cl ild 0.0004 Infant 0.0006 Liquid Effluents Adult Whole Body 0.07 N AD, <0.090*

1.

Fish Teen 0.04 NAD, <0.050 Child 0.02 NAD, <0.019 Adult GI(LLI)*

0.004 NAU, <0 00" 7 Teen 0.003 N A D, <0.00 20 Child 0.002 N AD, <0.0008 Adult Liver 0.09 NAD, <014

Teen 0.09 NAD,<0..i Child 0.08 NAD, <0. 3 9

4 i

Haddam Neck Station Annual Radiological Environmental Report 1996

'l

'I Notes:

(1) Method I uses measured station discharges and meteorological data as input parameters to j

i conservative transport to man models. Method 2 uses actual measured concentrations in environmental media.

(2) Maximum individual - The maximum individual dose is the dose to the most critical age group at the location of maximum concentration of plant related activity. The dose to the l

average individual is much less than the maximum individual dose. The doses for

)

inhalation and vegetable consumption assume that the individual resides at the point of l

maximum quarterly dose. Therefore, his residence is subject to variation for conservatism.

(3) NAD - No activity detected above the minimum detectable level. The less-than value reported is the yearly dose corresponding to the MDL.

[

(4) ND - Not Detectable - The plant effects at all off-site locations were so small that they could not be distinguished from fluctuations in natural background.

(5) The less-than values reported are the yearly dose corresponding to the Cs-137 MDL for fish. The maximum individual dose from fish would be an adult for the whole body and a teen for the liver.

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

i l

t 4

4 5-4

Haddam Neck Station Annual P.adiological Environmental Report 1996 6_._

DISCUSSION The evaluation of the effects of station operation on the environment requires the careful consideration of many factors. Those factors depend upon the media being effected.

They include station release rates, efDuent dispersion, occurrence of nuclear weapons tests, seasonal variability of fallout, local environment, and locational variability of fallout. Additional factors affecting the uptake of radionuclides in milk include soil conditions (mineral content, pH, etc.), quality of fertilization, quality ofland mac.agement (e.g., irrigation), pasturing habits of animals, and type of pasturage. Any of these factors could cause significant variations in the measured radioactivity. A failure to consider these factors could cause erroneous conclusions.

Consider, for example, the problem of deciphering the effect of station releases on the radioactivity measured in milk samples. This is an important problem because this product is widely consumed and fission products readily concentrate in this media. Some of these fission products, such as I-131 and Sr-89 are relatively short-lived. Therefore they result from either plant efnuents, nuclear weapons tests or nuclear incidents (e.g.

Charnobyl). Sr-89's lifetime is longer than I-131's, therefore it must be remembered that it will remain around for much longer periods of time. Problems are caused by the long-lived fission products, Sr-90 and Cs-137. These isotopes are still remaining from the high weapons testing era of the 1960's. This results in measurable amounts of Sr-90 and Cs-137 appearing in milk samples. Distinguishing between this " background" of fallout activity and plant effects is a difficult problem.

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

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

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

(2) 0ver the many years of plant operation, St-89 has often been released in

, comparable quantity to Sr-90. Since they are chemically similar, comparable levels should have been detected in milk if the Sr-90 was plant related. No plant related Sr-89 has ever been detected in milk samples.

(3) Similar to Sr-89. Cs-134 can be used as an indication of plant related Cs-137.

Although not as conclusive as Sr-89, the lack of any measurable Cs-134 in any of the milk samples suggests that the Cs-137 is not plant related. This is further confirmed by the evaluation of the air particulate data. The only 6-1

l Haddam Neck Station Annual Radiological Environmental Report 1996 occurrences of detectable Cs-134 in milk resulted from the Chernobyl incident.

(4) Since dairy milk sampling began in the 1960's, years prior to plant operation.

the immediate station areas have always shown higher levels of weapons fallout related Sr 90 and Cs-137 (see Figures 6-1 and 6-2). The ratio of

)

activity between the locations has not changed with plant operation. All areas show the same significant decrease in radioactivity since the 1964 Nuclear Test Ban Treaty.

l (5) Local variability of Sr-90 and Cs-137 in milk is common throughout the i

United States. Due to the variability in soil conditions, pasturing methods.

ramfall, etc., it is the rule rather than the exception. Therefore, it is not surprising that certain farms have higher levels of radioactivity than other farms. In fact, there are some cases where the farms further from the station have higher Sr-90 and Cs 137 values than the farms that are closer to the station (e.g., see pre-1984 Haddam Neck Goat Milk data.)

l (6) The Millstone goat farm with the highest levels of Sr-90 and Cs-137 has also experienced the highest levels of short-lived activity from the 1976 and 1977 Chinese Tests and the 1986 Chemobyl accident. This indicates that for some unknown reason this farm has the ability for higher reconcentration. Special studies performed at this and other farms failed to find any link to the plant.

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

Northeast Utilities has carefully examined the data throughout the year and has presented in this report all cases where plant related radioactivity can be detected. An analysis of the potential exposure to the population from any plant related activity has been performed and shows that in all cases the exposure is insignificant.

j Throughout the year, the Connecticut Department of Environmental Protection performs parallel environmental program under contract with the Nuclear Regulatory a

Commission. On a regular basis, the results of their analyses are compared to the results from this program's analyses. The comparisons are tracked and used as a cross-reference to verify measured plant activity. During 1996, both programs showed similar results.

As in previous years, this data is being submitted to, and will be reviewed by the appropriate regulatory bodies such as the Nuclear Regulatory Commission, Environmental Protection Agency and Connecticut Department of Environmental Protection.

l l

i 6-2

Haddam Neck Station Annual Radiological Environmental Report 1996 Fieure 6-1 Strontium-90 in Milk pCi/hter 25

CT Pooled Milk

\\ -Haddam area Milk g

l 3'

- -Matstone area Milk 15

\\

x" A/\\

/\\ '

N,. -

,s m m

/

YQ_

\\

A l

1 0

61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 Year i

i Fleure 6-2 Cesium-137 in Milk pCi/hter 160 140 CT Pooled Milk Haddam area Mdk 120

--Millstone area Milk 100 I

\\

80 60 40

/

s \\^N 20 O

_M 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 Year Dairy milk is no longer availablein the Millstone ares and CT Pooled milk has not been collected by the State of CT since 1994.

CY Start-uy occurred:

July 24,1967 MP1 Start-w occurred:

October 26,1970 MP2 Start up occurred:

October 17,1975 MP3 Start-up occurred:

January 23,1986 6-3

]

Haddam Neck Station Annual Radiological Environmental Report 1996 APPENDIX A COW AND GOAT CENSUS FOR 1996 A-1

. =

l l

Haddam Neck Station Annual Radiological Environmental Report 1996 Dairy Cows Within 15 Miles of Connecticut Yankee December 1996

\\

a Direction Distance Name and Address

of Cows

!I i

NNE 14 M Robert K. Gasper 65 694 Gilead Street Hebron, CT 06248 NNE 14 M Hills Farrn 120 527 Gilead Street Hebron, CT 06248 NNE 14 M Maple!eaf Farm, Inc.

160 750 Gilead Street Hebron, CT 06248 NNE 14 M Gordon N. Rathburn 36 Martin Road l

Hebron, CT 06248 136 NNE 14.5 M Doughs Porter RFD 11 Hebron, CT 06248 1

NE 8M Johnathan & Elizabeth Gilman 17 178 Cato Corner Rd.

Colchester, CT 06415 j

NE 14 M Victor Botticello 33 Levita Road Lebanon, CT 06249 ENE 6.5 M Grandpa Hill Farm / R.S. Cone 48 Box 251 318 Old Colchester Tpke East Haddam, CT 06423 l

ENE 11 M Richard Swider 40 Route 85 Colchester, CT 06415 E

11.5 t'.

Salem Valley Farm Dairy 46 Eugene Wilczewski 200 Darling Road j

Salem, CT 06415 E

14 M Stuart & Judith Gadbois 200 RT 82 / 95 Old Colchester Rd.

Salem, CT 06415 A-2

Haddam Neck Station Annual Radiological Environmental Report 1996 Dairy Cows Within 15 Miles of Connecticut Yankee l

December 1996

)

l Direction Distance Name and Address

of Cows SE 11 M Tif f any Farms 74 Sterling City Road j

Old Lyme, CT 06371 SW 14.5 M Sugarloaf Farm 27 154 Beaver Head Road North Guilford, CT 06437 WSW 8M Michael Dwyer 25 63 Grieb Rd.

Wallingford, CT 06492 WSW 8M Robert Raudat 33 i

Old Durham Road Killingworth, CT 06417 WSW 11 M Raymond Wimler 202 Guilford Road Durham, CT 06422 WSW 14 M Cella Brothers 105 Whirlwind Hill 2 No. Brandford Street Wallingford, CT 06492 WSW 15 M David & Kirsten Footit 55 180 Northford Rd.

Wallingford, CT 06492 W

11.5 M Friendly Acres Dairy Farm 27 Tony Caltabiano Parmalee Hill Road Durham, CT 06422 W

14 M North Farms 23 Walter Werbiski 1069 Farms Road walfingford, CT 06492 W

14.5 M Charles Greenback & Sons, Inc.

120 Box 451, Route 68 Durham, CT 06422 A4

Haddam Neck Station Annual Radiological Environmental Report 1996 Dairy Cows Within 15 Miles of Connecticut Yankee December 1996 i

i Direction Distance Name and Address

of Cows WNW 8M Richard Brock 30 787 Ridge Road Middletown, CT 06457 WNW 12 M Walnut Hill Farm 64 William & Thomas Mintz Jackson Hill Road Middlefield, CT 06455 WNW 15 M Bilger Brothers 12 Hickory Grove Farm 705 Westfield Road Meriden, CT 06450 NW 6M Edward Hills 111 30 772 Brooks Road i

Middletown, CT 06457 NW 13 M Higgins Farm, Inc.

60 837 Ridgewood Road l

Middletown, CT 06457 NW 15 M Wenceslaus & Jean Backiel 27 Riverside Farm RFD #2 Berlin, CT 06067 d

A-4

Haddam Neck Station Annual Radiological Environmental Report 1996 4

Dairy Goats Within 20 Miles of Connecticut Yankee 4

December 1996 Direction Distance Name and Address li of Goats i

l N

15 M

Joan & Thomas Kemble 0

581 Thompson Street j

Glastonbury, CT 06033 NNE 12 M Louise Sage 6

i 155 Reidy Hill Road l

Hebron, CT 06248 NNE 16 M

Joan Bowers 3

350 Wall Street Hebron, CT 06248 NNE 16 M

Kathy Waters 56 Burnt Hill Road Hebron, CT 06248 NE 8M Johnathan & Elizabeth Gilman 2

178 Cato Corner Road Colchester, CT 06415 SSE 10 N4 Laura Parker 5

95 Plains Road Essex, CT 06426 SSE 3.6 M Virginia Marshall 8

Old County Road Haddam, CT j

NE 17 M Sharon Stewart 54 A Kick Hill Road Lebanon,CT UNABLE TO CONTA CTAS OF THIS TIME.

A-5

Haddam Neck Station Annual Radiological Environmental Report 1996 i

Dairy Goats Within 20. lites of Connecticut Yankee T

December 1996 Direction Distance Name and Address

orGoats E

12 M Anne B. Henrici 0

Round Hill Road l

Salem, CT 06415 SE 19.5 M Mrs. John Mingo 9

69 Spithead Road Waterford, CT 06385 SE 15.8 M George Scacciaferro 2

4 338 Boston Post Road East Lyme, CT 06333 S

11.5 M Victor Trudeau 5

174 Horse Hill Road VVestbrook, CT 06498 4

W 15.3 M

Jim & Mary Hall Pettack 13 1000 North Farms Road Wallingford, CT 06492 WNW 19 M Daniel Nitkowski 4

46 Firch Avenue 1

Meriden, CT 06450 NNW 14 M Dorothy Joba 12 171 Ferry Lane S. Glastonbury, CT 06073 NNW 15 M Donald Reid 11 1654 Main Street I

Glastonbury, CT 06033 UNABLE TO CONTACT AS OF THIS TIME.

A-6

Haddam Neck Station Annual Radiological Environmental Report 1996 I

APPENDIX B NORTHEAST UTILITIES QA PROGRAM l

B-1

1 Haddam Neck Station Annual Radiological Environmental Report 1996 INTRODUCTION Northeast Utilities Service Company (NUSCO), acting as the agent for both the Northeast Nuclear Energy Company (NNECO) and the Connecticut Yankee Atomic Power Company (CYAPCO), maintains a quality assurance (QA) program as part of the radiological environmental monitoring program (REMP). The QA program consists of contractor appraisals and quality control samples.

NUSCO OA PROGRAM Appraisals are conducted of the primary (Yankee Atomic) radioanalysis contractor, of the Production Operations Support Laboratory (POSL), and of the NUSCO Radiological Engineering Section (RES). A REMP evaluation form is completed for each appraisal and discrepancies are tracked on a separate form until corrective action is taken. The primary contractor, POSL, and RES are also audited by other organizations; the contractor by other customers and POSL and RES by Northeast Utilities Quality Assessment Services.

There are two types of NUSCO QA Program quality control samples. They are:

Analyses of" spiked" samples and TLDs. This type of quality control allows a check on the accuracy of results for contractor's sample radioanalyses and for POSL's TLD readings.

Duplicate analyses of Millstone Quarry oysters and of TLDs. The oyster samples allow an evaluation of the contractor's precision or reproducibility of results. QA TLDs, of a different design from the REMP TLDs, are co-located with REMP TLDs at eight locations and processed at the NUSCO Personal Dosimetry Laboratory to verify the reliability of POSL's REMP TLD readings.

The number and type of NUSCO QA Program quality control samples are given in Table 1. The results of POSL's TLD readouts and the radioanalysis contractor's analyses of NUSCO quality control samples should satisfy acceptance criteria in NUSCO Radiological Assessment Branch Procedure RAB B-2, " Quality Control of the Environmental TLD Monitoring Program," and in Procedure RAB B-3, " Quality Control of Radiological Environmental Monitoring Program Sample Analyses." An investigation is conducted on any result or trend which does not satisfy acceptance criteria.

OTHER OA PROGRAMS The NUSCO QA Program is not the only QA Program which monitors performance of REMP radioanalyses. Other programs include:

1. Yankee Atomic's internal QA program. In addition to the NUSCO quality control samples the radioanalysis contractor has it's own quality control samples. In total between 10 and 20 percent of the contractor's sample analyses include quality control samples.

B-2

m.

Haddam Neck Station Annual Radiological Environmental Report 1996

2. Yankee Atomic's participation in EPA's Environmental Radioactivity Laboratory Intercomparison Studies Program. Results of the EPA Intercomparison Studies Program are contained in Appendix C.

2

3. Yankee Atomic's interlabortary comparison program with an independent third party, Analytics,Inc. Results of the Analytics intercomparison are contained in Appendix C.

Primary contractor participation in an interlabortary comparison program is required by plant technical specifications. The Analytics comparison satisfies this requirement and is supplemented by the EPA Intercomparison Studies Program.

4. For REMP TLDs the Nuclear Regulatory Commission-State of Connecticut j

Independent Verification Program also provides a quality control check of TLD measurements independent of the NUSCO QA Program.

CONCLUSION OF NUSCO OA PROGRA_M The NUSCO QA Program indicated that the Yankee Atomic environmental radiological analysis program and the NUSCO TLD program were adequate in 1996. Of 119 analysis results on QA samples,108 passed criteria. This is a 91% success rate. All 22 analysts results on TLDs passed criteria.

DISCUSSION OF S AMPLES FAILING CRITERI A There were three water gamma analyses which exceeded their criteria of being within 20% of the spiked value - an I-131 sample at -25%, a Ce-144 sample at -61%, and a Zn-65 sample at 28%. For the 1631 and Ce-144 samples four other nuclide spikes in the same water sample passed criteria and the next QC samples with I-131 and Ce 144 passed criteria for those nuclides. The Zn-65 sample failed criteria because the standard source had aged beyond its recommended use life. A new source is to be ordered.

There were four oyster gamma analyses which exceeded their criteria of not being within the two sigma error range of the average for the two blind duplicate oyster samples.

These failures occurred in two of the four sets of blind duplicates submitted in 1996. For the February sample set the Ag-110m analysis failed criteria and for the November sample set the Co-60, Zn-65, and Ag-110m analyses failed criteria. Investigation has not revealed anything in sample collection and preparation which could be the cause of these failures. Additional investigation in 1997 will look at sample analysis. The cause of the failures may be discrete particle activity which would make it very difficult to successfully compare duplicate sample results. The suitability of oysters as a QC duplicate sample will be evaluated in 1997.

There was one air iodine analysis which exceeded its criteria of being within 20% of the spiked value. The cause of this error was probably due to the small volume of the standard spike. Any error in the volume of the standard spike would have a greater effect on the total spike activity delivered to the sample because of the small volume. To avoid B-3

1 i

Haddam Neck Station Annual Radiological Environmental Report 1996 this possible error in the future, the spike solution will be diluted to allow sufficient volume to be used.

i There were three air particulate gamma analyses which exceeded their criteria of being i

within 20% of the spiked value - two Mn-54 samples at 24% and 26% and a Cs-137 i

i sample at 24%. For all these samples other nuclide spikes in the same filter sample passed criteria and subsequent results for Mn-54 and Cs-137 passed criteria.

1 l

i l

l B-4

Haddam Neck Station Annual Radiological Environmental Report 1996 j

TABLEI NUMBER OF QUALITY CONTROL SANIPLES 1996

,,,-.,,c_,,_,.~.~,_,..._.._m,.--,.

i SAMPLE TYPE?

NUMBER OF1 NUMBEROF

'OC SAMPLES R'OUTINE' ANALYSES W

^>

U

...m.

.J

.. :2... _ _ _,

TLDs Field Comparison 11

528 m

Spike 11 528 Milk - Strontium 2

30 Milk - Iodine 6

89 Water - Gamma 12 ")

113

Water - Tritium 4

24 Fish / Invertebrate - Gamma 4

86 Vegetation / Aquatic Flora / Sediment -

0 55 Gamma Air Particulate Gross Beta 6

780 Iodine 4

780 H)

Gamma 4

60 FOOTNOTES (1) Total for both Millstone and Connecticut Yankee (2) Each TLD field comparison sample is comprised of a set of 8 TLDs.

(3) Each TLD spike sample is comprised of a set of 4 TLDs.

(4) Each water and air particulate gamma QC sample includes 4 or 5 nuclides.

(5) Includes gamma in milk analyses. Gamma in water QA spikes are treated as milk surrogates.

e

Haddam Neck Station Annual Radiological Environmental Report 1996 1

TABLE 2

)

RESULTS OF QUALITY CONTROL SAMPLE ANALYSES 1996

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

_ -...,,_- _,--_.,,.,, _ r_.. _.,,,._ _

j

' SAMPLETYPEj ~

, NUMBER PASS

' NUMBER' FAIL.

2 CRITERIA (

i CRITERIA-m... u m.-

. TLDs Field Comparison i1 0

t Spike 11 0

i Milk - Strontium 3 ")

0 Milk - Iodine 6

0 i

Water - Gamma 55 3

C)

Water - Tritium 4

0 i

Oysters - Gamma 14 4

C) 4 Air Particulate Gross Beta 6

0 Iodine 3

1 C

Gamma )

17 3

TOTALS TLDs: 22 TLDs: 0 1

Samples: 108 Samples: 11 FOOTNOTES l

(1) One milk strontium had two associated analyses - Sr-89 and Sr-90.

l (2) Each sample has analysis results for 3 to 6 nuclides and each nuclide result is required to pass criteria. Therefore each sample has 3 to 6 total comparisons passing or failing criteria.

s W

g 4

j 1

g-6

i Haddam Neck Station Annual Radiological Environmental Report 1996 APPENDIX C i

i SU-MMARY OF INTERLABORATORY COMPARISONS C-1

Haddam Neck Station Annual Radiological Environmental Report 1996 ANALYTICS INTERCONIPARISON PROGRAM 1996 bUARhER MEDIA _ NUCLIDE_KNOWN _

ANALYSIS,,_ RATIO lst Milk Sr-89 31 pCi/L 35 pCi/L 1.13 Sr-90 16 17 1.06 Cr-51 858 875 1.02 Mn-54 84 88 1.05 Co-58 128 132 1.03 Co-60 204 207 1.01 Fe-59 223 235 1.05 Zn-65 260 267 1.03 I-131 13 11 0.85 I-131 (LL) 13 11.8 0.9 I Cs-134 154 155 1.01 Cs-137 170 170 1.00 Ce-141 234 237 1.01 1st Water Beta 107 pCi/L 118 pCi/L 1.03 Cr-51 322 328 1.02 Mn-54 31 30 0.97 Co-58 48 48 1.00 Co-60 76 73 0.96 Fe-59 83 85 1.02 Zn-65 97 40 0.93 I-131 36 34 0.94 I

Cs-134 58 55 0.95 Cs-137 64 63 0.98 Ce-141 88 88 1.00 Ra-226 70 68 0.97 Ra 228 49 49 1.00 j

2nd Air Filter Beta 179 pCi/ filter 185 pCi/ filter 1.03 Sr-89 44

<MDA Sr-90 64 57 0.89 Cr-51 953 1071 1.12 3

Mn-54 508 597 1.18 i

Co-58 157 176 1.12 Co-60 142 153 1.08 Fe-59 131 151 1.15 Zn-65 98 110 1.12 Cs-134 282 281 1.00 Cs-137 694 797 1.15 Ce-141 363 380 1.05 2nd Water H-3 4915 pCi/L 4580 pCi/L 0.93 1

C-2

- _ ~ _ -. -

Haddam Neck Station Annual Radiological Environmental Report 1996 ANALYTICS INTERCOMPARISON PROGRANI 1996 OUARTER;. MEDIA -NUCLIDE

KNOWN, ANALYSIS RATIO 2nd Milk K-40 1269 pCi/L 1350 pCi/L 1.06 Cr-51 563 581 1.03 Mn-54 300 311 1.04 Co-58 93 93 1.00 Co-60 84 84 1.00 Fe-59 77 82 1.06 Zn-65 58 53 0.91 1-131 15 16 1.07 j

Cs-134 166 167 1.01 l

Cs-137 410 409 1.00 Ce-141 215 219 1.02 3rd Milk Sr-89 50 pCi/L 54 pCi/L 1.08 St-90 22 22 1.00 Cr-51 486 514 1.06 Mn-54 180 189 1.05 Co-58 131 132 1.01 j

Co-60 114 118 1.04 Fe-59 37 40.8 1.10 Zn-65 70 73 1.04 I-131 24 24.5 1.02 Cs-134 222 226 1.02 Cs-137 169 176 1.04 Ce-141 318 325 1.02 3rd Water Sr-89 40 pCi/L 47 pCi/L 1.18 Sr-90 35 36 1.03 Beta 70 77 1.10 Cr-51 646 650 1.01 Mn-54 239 248 1.04 Co-58 174 172 0.99 Co-60 151 155 1.03 Fe-59 50 51 1.02 Zn-65 93 98 1.05 I-131 50 49 0.98 Cs-134 295 299 1.01 Cs-137 225 226 1.00 Ce-141 423 420 0.99 C3

Haddam Neck Station Annual Radiological Environmental Report 1996 I

J i

ANALYTICS INTERCOMPARISON PROGRAM i996

,1 1

01 ARTER : NIEDIA} NUCLIDE KNOWN _

ANALYSIS RATIO I

4th Milk Cr-51 214 pCi/L 202 pCi/L 0.94 i

Mn-54 206 217 1.05 Co-58 121 120 0.99 i

Co-60 110 113 1.03 2

Fe-59 49 52 1.06 Zn-65 93 94 1.01 I-131 59 65 1.10 I

I-131 (LL) 59 56 0.95 j

Cs-134 175 168 0.96 Cs-137 195 194 0.99 Ce 141 277 27S 1.00 4th Air Filter Beta 170 pCi/ filter 199 pCi/ filter 1.17 I

Sr-89 96 102 1.06 Sr-90 77 72 0.94 5

4th Water H-3 2686 pCi/L 2440 pCi/L 0.91 j

I J

4 e

4 l

1 I

4 I

i 1

C4

l Haddam Neck Station Annual Radiological Environmental Report 1996 U.S. EPA INTERL ABORATORY COMPARISON STUDIES PROGRAM 1996

~

1 - - ~ _. m _,-.... ~

iDAT5. Zi:MEDIAH JNUCl.ID51.? 1 iEPA(a)y :<;@ {NANKEE i _ l.mATOM a.

._ w

-n ; s.,,. ;. ;

m 1/23/96 Water St 89 73.0 2.9 79.2 1.7 Sr-90 5.0 2.9 4.7 0.3 3/8/96 Water H-3 22002

1270 23680 470 4/16/96 Water Sr-89 43.0 2.9 45.4

0.6 Sr-90 16.0 2.9 14.6 u 0.3 Co-60 31.0 2.9 31.8 1.1 Cs-134 46.0 2.9 43.4 e 1.5 Cs-137 50.0 2.9 48.6 1.7 Ra-226 3.0 z 0.3 3.6 0.2 Ra-228 5.0 0.8 4.9 = 1.4 6/7/96 Water Co-60 99.0 2.9 95.4

2.6 Zn-65 300.0 17.3 301.8 t 7.6 Cs-134 79.0 2.9 75.422.1 Cs-137 197.0 5.8 196.1 1.8 Ba-133 745.0 43.2 731.9

8.3 Ra-226 4.9 0.4 5.3 0.3 Ra-228 9.0*1.3 8.0 1.3 7/12/96 Water St-89 25.0 2.9 23.5

0.3 f

Sr 90 12.022.9 12.0 1.3 7/19/96 Water Beta 44.8

2.9(d) 20.7 0.2(d) 8/9/96 Water H-3 10879 628 10203 *494 N

I

. C-5

l Haddam Neck Station Annual Radiological Environmental Report 1996 l

U S. EPA INTERLABORATORY COMPARISON STUDIES PROGRAM 1996

....., mm,w:mm:-~~~-

DATE,1;ig.4y MG':$g5jMEDIAO ;flfmmmmNUCLIDEnff',,,

?r i; YANKEE':b;g g,

s....

. +..,

{x pf

~..

.=. ? ATOMIC (biY 5-

+

10/15/96 Water Sr-89 10.0

2.9 12.0 1.0 St-90 25.0 2.9 22.9 0.1 Co-60 15.0 a 2.9 13.8 0.4 Cs-134 20.0 = 2.9 18.8 1.6 Cs-137 30.0 2.9 29.6

0.6 Ra-226 9.9 0.9 8.9 0.3 Ra-228 5.1 0.8 6.3 = 0.2 10/25/96 Water Beta 34.6 2.9 35.7

1.3 11/8/96 Water Co-60 44.0 2.9 43.7

0.4 Zn-65 35.0 2.9 34.5 1.9 j

Cs-134 11.0 2.9 10.7 0.2 l

Cs.137 19.0 t 2.9 19.7 0.8 Ba-133 64.0 3.5 60.9 2.4 FOOTNOTES Units are pCi/ liter for water and milk. Air particulate filters are in units of total pct.

(a)

EPA known value

normalized standard deviation. [The error in the EPA number is not the " expected precision" used in EPA's report but the normalized standard j

deviation. It is derived by dividing the expected precision by the square root of the number of analyses to be performed, which is 3. This provides a much more direct comparison of the EPA known to the results of the analyses.]

(b)

Average of three analyses

one standard deviation of the three analytical results. If the average value is not within the EPA known value three times the normalized standard deviation it is outside of EPA control limits.

k k

E i

a 4'

6

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ML20148A005

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