Text

Offsite Environ Radiological Monitoring:Summary of Survey Results,750629-1231
	ML20031C189
Person / Time
Site:	Yankee Rowe
Issue date:	03/02/1976
From:	; YANKEE ATOMIC ELECTRIC CO.
To:	;
References
	NUDOCS 8110060618
	Download: ML20031C189 (38)
	v • d • e

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50-27 YANKEE ATO}ffC ELECTRIC COMPANY OFFSITE ENVIRON}iENTAL RADIOLOGICAL MONITORING SODfARY OF SURVEY RESULTS June 29, 1975 - December 31, 1975 If T TT 'n ': To y yg y. 7,,,p,,,,

" 7 r77,7,q 0110060618 760302 PDR ADOCK 05000029 PDR

i INTRODUCTION In compliance with reporting requirements detailed in Yankee Atomic Electric Company Technical Specification Section 1 6. 6. 7. 11', this report sumuarizes the results of the offsite environmental radiation surveillance program for the period Jur.e 29, 1975 - December 31, 1975.

Included with this report are the tallowing:

1.

Table I - A summary of analyses for the period June 29, 1975 through December 31, 1975 - including for each media sampled i

during the reporting period:

a.

Number of sampling locations b.

Total number of samples c.

The high, low and the average of all real values for the Zone I stations d.

The high, low and average of all real values of the Zone 11 stations e.

The high, low and the average of all real values for the station with the highest average value f.

The number of nonroutine reported u.easurements g.

The ratio (F) of the number of positive values to the total number of values (both positive and "Less Than") is given for each average.

2.

Table II - IX - Locations of sample points and monitoring stations.

3.

Table X - Detect ion capabili ties for Er.vironmental Radiological Sample

\\nalysis See Note to Table II for axplanation of Zone I, Zone II All analyses during the reporting period, except the TLD neasurements cade by plant personnci, were performed by Teledyne Isotopes, Inc.,

Westwood, h'ew Jersey.

During the period of this report, levels of plant related radioactive materials above background as determined by the environmental monitoring program do not indicate the likelihood of anu public intakes or exposures in excess of 1 percent of those that cor'

.c. ult from continuous exposure to the concentration values l'sted in Appendix B. Table II, Part 20 of Title 10 of the Code of Federal Regulations.

In addition, no statistically significant variation of offsite environmental concentrations with time were observed.

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'TLD re dings mada at nins pointo on the plant rsstricted area fence (points 13 - 21 in Table IX) indicate elevated exposure rates due to direct radiation from stored wastes and miscellaneous sources onsite.

However, due to Yankee's isolated location, there is no likely significant increase in exposure to any member of the general public.

All points exhibiting an increase were located no more than 0.2 kilometers from the center of the containment. All other TLD sites, including two at 0.8 kilometers and 0.5 kilometers from the containment building showed no significant increase in exposure over the six month period. TLD readings are routinely made by Yankee Rowe personnel on-monthly integrated neasurements at twenty-two locations.

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Gross Alpha Discussion Theairparticulate.grossalphasummaryinTableIindicgtesthat 3tation A-2 showed signiYicantly, higher activity (2.5E-3 pCi/m') during this semi-annual period than!was noted'in the background Station A-5.

This is based on 6 positive alpha *inalyses for A-2 out of 26 sampics versus 9 positive sarples for station A-5 of 26 sampics. A summary of air-borne gross alpha activity by quarter is shown below along with the total particulate gross alpha activity, released each quarter.

t YANKEE ATOMIC ELECTRIC COMPANY Airborne Cross Alpha Activity (pC1/m3)

Monitoring' Station 4

(See Tabic 11) p Third Quarter Fourth Ouarter s

Al

.2.1 E-3 (5/13)*

1.3 E-3 (6/13)

A2 3.0 E-3 (4/13) 1.6 E-3 (2/13)

A3 1.3 E-3 (8/13) 1.6 E-3 (3/13)

A4' I.9 E-3 (4/13) 1.2 E-3 (3/13)

AS 2.0 E-3 (3/13) 1.1 E-3 (6/13)

Average of Indicator Station (Al-A4) 2.1 E-3 1.4 E-3 Total Particulate Gross Alpha Activity Released (Ci) 9.6 E-6' 4.6 3-5

Number of Positive Measurements / Total < Analyses for Period of note 'is the fact that the average for a11 close in stations was 2.1 E-3 3

3 pCi/m in the third quarter and 1.4 E-3 pCi/m in the fourth gaarter. This compares to background station measurements of 2.0 E-3 and 1.1 E-3 pCi/m3 for the third and fourth quarters respectively. Since total gross alpha releases for the fourth quarterwere 4.8 times higher than the third quarter and gross alpha activity was significantly higher at all statiens during the third quarter it is concluded that any variations;in individual station averages are unrelated to the trivial amount of particulate gross alpha' activity released during this semi-annual period.

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i Cs-137 Discuss 3on Page 9 of table 1 shows an average value of 5.3 pCi/gm of Cs-137 for Station SV7. Assuming all of the Cs-137 is within the first 5 cm of soil and assuming 100 percent occupancy, the corresponding concentration to yield a dose of 5 mrem per year is 1.7 pCi/gm. The incremental dose rate above Lackground at Station'SV" after 'djusting for 70 percent occupancy would be 7.62 mRom/ycar. Ilowever, ful cher examination of ' release, data for the period from July to September 1975 indicate that releases of Cs-134 were of the same order of magnitude as Cs-137. Also, fourth quarter releases of Cs-134 were an order of magnitude higher than Cs-137 release. There fore,

it would be expected that if the detected Cs-137 at Station SV7 was plant related Cs-134 would also have been detected. Table I indicates that no Cs-134 was detected at any sofi sample stations.

It seems likely t. hat the reported values for Cs-137 are due to contamination and are not the result of plant releases.

Further sampling will be done to confirm this and soil sampling procedures will be examined to avoid any possibility of contaminating seil samples.

Co-60 Discussion As stated in the Yankee Atomic 0 rsite Environmental Monitoring Report for January 1, 1975 - June 30, 1975 additional soil samples were taken to check for the presence of plant related isotopes at soil sample station SV2 (Dunbar Brook).

No ~ Co-60 was detected in any of these additional soil samples indicating the likelihood of cross contamination of sampics in handling. As stated in the Cs-137 discussion the soil sampling proceduie3 will be examined to avoid any possibility of contaminating soil samples.

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-'T-_

o REPORTING METHOD FOR OFFSITF ENVIRONMENTAL RADIOLOGICAL MONITORING I.

What is Reported:

The follgging is reported for each particular measurement (gross beta, Sr, etc.) and each isotope of a gamma spectrum:

1.

The high, low and the average of all real values for the Zone 1 stations 2.

The high, low and the average of all real values of the Zone II stations 3.

The high, low and the average of all real values fcr the station with the highest average value 4.

The number of nonroutine reported measurements II.

How the Numbers are Generated:

1.

A number is reported as positive provided that its value is greater than the 3 o counting error 2.

When the real value for a particular analysis is lower than the detection limit, the value is reported as less than ("L.T.")

the particular detection limit For a specific sample site, medium and analysis, several values will be averaged depeneing on the sarple frequency.

For the case where all the salues are positive, the average is based on all the values.

The standard deviation of the average is calculated by taking the square root of the sum of the squares of the individual deviatians and dividing by the number of values.

Where there are mixed positive and "Less Than" values, only the positive values are used in the average. The standard deviation is also based only on the positive values.

The ratio of the nueber of positive values to the total number of values (both positive and "Less Than") ic given for each average.

Where no "L.T." values have been reported for a spc:ific analysis on a particular media, the appropriate nominal detection sensitivity as supplied by tha laboratory will be usci as the LLD value.

Where there are "L.T." values reported for a specific analysis on a particular media, the high, low and average of the reported "L.T." values is given as the LLD.

A nonroutine analysis is one in which the reported value exceeds ten tines the control sta' ion value.

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nu.s.

wsv & e.' 6 TAttt.E I OFFEITE ENVIRONMENTAL R4010 LOGICAL MONITONING

SUMMARY

OF ANALYSIS POR THE PEH100 06/29/75 12/31/75 AIR PARTICULATF FILTERS 8'CI/CU. H ANALYSES lower LIMIT PF5tFORMED Or ALL INDICATOR STATIONS LOCATION OF HIGHEST ANNUAL MEAN CONTHOL LOCATIONS (TOTAL NUMHER)

DETECTION MEAN IF)

STATION MEAN IF)

MtAN IF)

(NON-ROUTINEl*

(LLO)

RANGE

~

RANGE MANGE GR-A (130) 8.92F-34 (1.7 2

.131E -3 t 35/104)

A2 (2.5 1 41)E -3t 6/26)

(1 4 2

.20lE -38 9/ 268 t 01 13.0 - 114.00)E

-4 16.9 - 70.001E ~4 (1 3 -

7.003E -3

( 7.7 - 45 00lE ~4 GR-R (130) 4.00E-03 (2.9 1

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A2 (3.0 1 063E -2(26/26) 62.8 A

.05)E -26 26/ 26)

(

0)

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( of (6.0 - 17.201E -2 (7 4 - 17.203E -2 (6.3 = 19 70lE -2 M-40 t 301 1 40E.

<LLD

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<LLO

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( 301 7.55E-04 (2.1 2

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<LLO I of 14.0 - 20.001E -*

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(F) THE FRACT!0N Or DETECTABLE 4F45'JREMENTS AT A SPECIFIED LOCA110N IS INDICA 1ED IN PARENTMESIS.

O NON-ROUTINE INDICATES THE NU4REW OF SEPARATE MEASUREMENTS wk!CH WENE GwEAfER l

THAN TEN (103 TIMES THE AVER AGL RACKGROUNO FOR THE NEPORT F ERIGO.

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O YANMEE NOWE 02/18/76 PAGE 2

TABLE I (CONTIMiFD) 0FFSITE ENVIRONwENTAL WA0!0 LOGICAL MONITDw!NG SuwwARY OF ANALYSES Fod THE PEWICO 06/29/75 12/31/F5 A14 PARTICUL A TE F IL TEd%

GCI/CO. =

ANALYSES Lo*E4 LIMIT RE4F004EO OF ALL INDICATOR STATION 5 LOCat!ON OF HIGMEbl ANNOAL MEAN CONiwuL LOCATIOND

+

(TOTAL NU4AEpi UETECTION

EAN (F)

STATION MEAN IF)

Nt 4N If l (NON-HLOTINE s *

(LL O)

RANGE RANGE MANGC HU-106 ( 301 5.R6E-03

<LLD

<LLO

LLO t 01 (3.0 -

10.20lf. -3 4

CS-134 ( 301 6.37E-04

<LLO

<Lto

<LLO t 0)

(4.0 -

10.00lt

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.iviE -3 t 9/ 241 A5 (J.3 1 735E.38 1/ 63 13.3 a

.F3)E -38 1/ 63 C5-137 t 30) 7.5mE-04 (1.4 +

t On

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19.60lE

-4 MA-140 t 301 R.075-03

<LLO

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CE-141 ( 308 1.18F-03

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On (1 0 30.001E

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6/ 241 A5 (1 6 1 418E -24 1/ 63 (1.6 A 41]E 2t 1/ 68

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On (1.0 F.0 ult -3 (5.6 13.20lE ~3 RA.P26 t 30) 7.18E-03 (5.9

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1.02tE.3

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THE F RACTION OF DEfECTANLE MEASUAFMENTS AT & SPECIFIED LOCAfl0N IS INDICalto IN PARENTHESts.

NON-RouTINF INO{ CATES TFE NUM9ER OF SEDAQAIE MEASUREdENTS ed!CH mERt GW.ArtN THAN TE*4 1101 TI*iE5 THc AVERAGE OACzGWOUND 50W THE wtPORT ped!00.

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4

YANMEE Wout 02/10/76 PAGE 3

TABLE I (CONTIMIT D)

OFFStiE FNV!WONMENTAL RA0!OLOGICAL woNITOWikG

SUMMARY

OF ANALYSES F OR 1*E PENIOD 12/31/75 06/29/75 CHADCOAL FILIEWS PCl/CU. "

ANALYSTS OeE4 I.IMIT FFaFOGwEO or ALL INDICAtod STATIONS LOCAf!ON OF HIGnESI ANNUAL MEAN CONTROL LOCA110Mb (TOTAL Nd=RER)

SiTECT10N ug4N (F )

STAlt0N MEAN (F)

MEAN tri (NON.ROUTINEl*

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(4.0

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YONMEE Woct 02/18/74 PAGE 13 TABLE I (CosTINUrD) 0FFSITE ENVIRONMENTAL RA0ioLOGICAL MONIfow!NG SudMARY OF ANALYSES 60W THE PEN 100 06/29/75 12/31/T5 i

VEGFTATION AQUATIC PCI/Gg wrf ANALYSES LCwER LIMIT PERF0WMEn CF ALL IN0!CATOR STATIONS LOC %fluN OF MIGNEbi ANNUAL MEAN CONTROL LOCATIONS (total NUM4ERI DETECT 104

EAN (F) 51All0N MEAN (F)

MLAN (F)

(NON.HOUTINEl*

(LLD)

RANGE RANGE MANGE C5-137 (

61 4.00E-07 (2.1 :

.201E -1

(

3/ 43

'A3 (5.2 1

.J83E -li 2/ 23 (5.2 1

.388E ~11 2/ 28

(

03 (1.7 -

7.00lE -1 (4.0 -

6.431E -1 14.s -

6 43)E -l 94 140 (

61

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(

01 (3.0 -

l0.00lt -1 (LLD CE-141 (

61 9.33E-02

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03 (4.0 -

10.001E -2

<LLD CE-144 (

61

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(

03 (1.7 2.621E -1 (2.0 -

4.73)E -1 (2.0 -

4 731E ~1 (F)

THE FRACTION OF DETECTAdLE wEASUREMENTS AT A SPECIFIE0 L' CATION IS INDICAIED IN PARENTHESIS.

NON-WOUTINF INDICATES THE NUMRER OF SEPARATE MEASUREMENTS WHICH mEdt GWEAIER iMAN TF.f4 (101 TIMES THE AVERAGF RACKGROUND FOR THE NEPORT PERIOD.

i.

O 9

~

YANKEC NOTE 02/19/76 PAGE 14 TABLE I 0FFSITE ENWICONMENTEL M EDIOLOGICAL MONITON18sG SO94AHf 0F ANALYSCS FON THE PER100 06/29/75 12/31/F5 VEGETATION - TEWAEST!al PCI/GM WET ENILYSES lower L1 HIT PFWFnpMED OF ALL INDICATOR STATIONS LOCATION OF HIGHEST ANNUAL seEA*d CONTNUL LUCATIONb (ToftL N$MER)

OETECTION MEAN (F)

STATION MEAN (Fl MLAN WI (NON-ROUTINEl*

(LLD)

RANGE RANGE MANGE G%-A

( 18)

.16

<LLD (LLD

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( 0)

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1/ ~6)

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(

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( 18)

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<LLO I of (3.0 20,.00lE -2 (F8 THE FRACTION OF DETECTA8t.E ME A9NEMENTS AT A SPECIFIE0 LOCAT' ON IS IN0!CATED IN PARENTMESIS.

N'ON-ROUTINE INDICATES THE NUMAEH OF SEPARATE MEASUREMENTS WH: CH WEME GNEAfEM

~

O THAN TEN (103 TIMES THE AVEWAGE H ACKGk'0UNO FOM THE MEPOR T Pl:HIDO.

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m YANMEE Host 02/la/74 PAGE 15 TABLE I (CfMT!'A!ED) 0FFSIIE ENv!RON*ENT AL W ADIOLOGICAL MONITUWING

SUMMARY

OF ANALYSES Pod THE PEH100 12/31/75 06/29/75 TEaGEstlaL VEGFTAf!ON PCI/GM.ET ANALYSES LOWEW L!alf PERF0WMED OF ALL IN01CATOR bi4TIONS LOCATION OF MIGHEST ANNUAL MEAN CDNTROL LUCATIDN6 (TOTAL NUM9ERI OETECTIUd MEAN (F)

STATION MEAN (F)

MLAN (F)

(NON.ROUTINEl*

(LLO)

HANGE RANGE NANGE CU-106 ( IMI

.56

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(

On (2.0 - 10.008t

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<LLD

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(

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(

8/ 16)

Sv9 (2.0 g 923E -it 1/ El (2.0 2

.92)E.it 1/ 2) t 01 (4.0 - 2 0. 0 0 l F. -7 (7.3 15.*03E -2 84 140 t 18) 77

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<LLD

(

0)

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9.003E -1 RA-226 ( 13) 11

<LLO Sv9 (4.3 1 1.973E 08 1/ 23 (4. 3 A ' 1 9 FIE 08 1/ 2)

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1/ 169 hv5 ti.4 1 418E -!t 1/ El

LLD

(

01 (3.0 - 20.003E -?

(FI THE FRACTION OF DETECT ABLE ME A9JRFuENTS AT 4 SPECIFIED LOCATION IS INDICAIED IN PARENIHESIS.

NON-WOUTINF INDICATES int NUwaEd 0F SERA 9 ATE MEASUREMENTS eHICH wERE GNEAIER THAN TEN (101 TIMES TMt AVEW4(iF RACKGWOUND F0W THE MEPORI PEWIUD.

s 4

S

vcNMEi MosE 92/18/76 -

Paeg 13

~

.j TABLE I I

0FFSITE ENVIRCNMENTEL R1010 LOGICAL MONITONING

SUMMARY

OF ANALYSIS F04 THE PEWIDO 06/29/73 12/31/T5

=

teATER. ORAINAGE PCI/ LITER ANALYSES LOWER LIMIT PFRFORMED OF ALL IN0!CATOR STATIONS LOCATION OF HIGHEST AVdUAL MEAN CONTROL LOCATIONS (TOTAL N'JM8ERI DETECTION MEAN (F)

STATION HEAN (F)

Mt.AN (Fi (NON-WOUT!HEl*

(1.LD )

rat 4GE RANGE RANGE GD.A

( 12) 3.2

<LLD

<LLD N/A

(

01 (2 0 5.003E o GR-R

( 12) 90 (8.7 2

.38)E O ( 12/ 12)

WT (1.4 A 063E 1.8 6/ 68 N/A

( 01 (1.5 30.00lE O (6.5 30.003E 0 S0-89

( 12) 5.8

<LLO

<LLD N/A

(

01 (5.0 -

7.003E o SR-90

( 12)

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.463E 0 ( 2/ 12)

W6 (1.s 2 603E 0( 1/ 63 N/A

(

On (R.0 -

9.001E.1 (1.1 1.80lE 0 85 7.

( 12) 62.

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(

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( 171 5.7

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<LLD

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( 03 (5.0 10.00lE o

'*i N/A No app!! cable background location - See Footnote to Table III

.I (F)

THE TRACTION OF DETEC TAdLE MF ASURF.MENTS AT A SPECIFIED LOCAf l0N IS INDICATED IN PARENTHESIS.

IJ

NON-ROUTINE INDICATES THE NUMREM OF SEPARATE MEASUNEMENTS WHICH WERE GMEA[ER

!i.

THAN TEN (10) TIMES THE AVE 4 AGE HACKGROUND FON THE REPORT PERIOD.

N

--Capgeste,

Patt,

~11

*i. :.

u=6 TABLE F OFFSITE ENVIRONMENTCL 4ADICLEGICAL MONITDNING

SUMMARY

OF ANALYSES FON THE PENICO 06/29/75 12/31/75 WATER. DRAINAGE PCI/LITFR ANALYSES lower LIMIT -

PEWF0WLO OF ALL IN01CATOR STATIONS LOCATION OF HIGHEST ANNUAL MEAN CONTNUL LOCATIONS ITOTAL NUHeiERI DETECTION MEAN (F)

STATION MEAN (F)

MtAN (FI (NON-ROUTINEl*

(LLD)

RANGE RANGE MANGE RU.106 t 12) 53.

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( 01 12 0 7.001E 1 CA.226 f 128 90.

<LLD

<LLD N/A i 01 85.0 10.003E I TH.228 f 12) 8.3

<LLO

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(

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16.1 2

.241E 2 't 12/ 128 w7 (8.3 1 371E 28 6/ 68

' /A N

t of (2.5 12.901E 2 84.8 12.90lE 2 (F)

THE FRACTION OF DETECT 4dLE MracVREMENTS 4T A SPECIFIED LOCATION IS INDICATED IN PARENTHESIS.

NON-ROUTINE INDICATES THE Nua*AFH OF SEPAR ATE HEASUREMENTS WHICH WERE GNEAIER THAN TEN (10) TIMES THE AVERAGE RACKGROUND FOR THE HEPORT PERIOD.

N/A No applicable background location - See Footnote to Table III l

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s YLNEE MosE 02/18/76 P4GE 19 TARIE I (CONTINtitD)

OFFSITE ENv!AONMENTAL WADIOLOGICAL MONITuw!NG SUwwARY OF ANALYSES FOR THE PENIOD 06/29/75 12/31/75 WATFD. OTHE9 PCI/LTTER ANALYSES Lowed LI*IT PF4FORuED OF ALL INDICATOR 5 FAT 10NS LOCAL!ON OF MIGMEST ANNUAL MEAN CONTROL LOCATIDNb (TOTAL NUMAERI DETECTION wt4N (e l STATION MEAN IFl MLAN IF)

(NON.WOUTINEl*

(LLDI RANGE RANGE MANGE EU-106 ( 363 53.

<LLD

<LLD i 01 (2.0 10.00lE 1 CS-114 ( 161 6.0

<LLO

LLD

LLD

(

0)

(2.0 -

10.0 Ult 0 CS-13F ( 361 6.3 (9.2 +

5.89)E o( 1/ 24) e6 (9.2 1 5.89)L Of 1/ 61

<LLD

(

01 (2 0 -

10. 0 til t 0 CO-140 ( 361 61.

<LLD

(

01 (7.0 - 100.00lt 0 CE-141 ( 363 13.

<LLO

<LLD

LLD

(

On (5.0 - 30.00lt 0 CE-144 ( 36) 46.

<LLD

(

On (2.0 - 10.00)E 1

CO-226 ( 36) 1.00E+02

<LLO

<LLD

<LLD t On 84.0 - 20.001E 1

TH-228 ( 361 4.4

<LLD

(

01 (4.0 - 20.00lE 0 H-3

( 361 1 0SE+02 (2.3 2

.05)E 3 1 24/ 248 we (F.9 1 20lE 31 6/ 69 (2.5 A

.22iE 28 11/ 121

(

61 (1.1 92.601E 2 tb.e -

9.24)E J

(1.4 4 70lE 2 l

1 (F)

THE FRACTION OF40ETECTA1LE MFASUWFMENTS AT 4 SPECIFIED LOCATION IS INDICATED IN PARENINESIS.

NON-WOUTTNF TN0! CATES THF NUMPER OF SFPARATE vt45UWtMFNTS sHICH WERt GWEaltN THAN TEN (108 TIMES TMt AVEWAGE HACKGdOUNU FON THE NEPORT PEW!Op.

o YANKFE R0nf W 20 OFFSITE EWIRON" ENTAL RADIOLDGICAL DONITORING StANARY OF ANALYSFS FOR THE FERIOD 06/19/75 - 12/31/75 1La - DIRECT RADI ATION mrad / month ANALYSTS LohTR Likt!T l'LRFOioilD OF ALL INDICATOR STA110N4 IDCATION OF HIGilrST ANNUAI. Mi- \\N CONTROL LOCAT!ONS (TOT AL NUMBl R)

DETICTION MLAN ff)

STATION M1 A N (I')

frAN (F)

( NON-ROITTINI ) *

(LtD )

RANCf.

R t'.t.i RANCI TLD ( 132) 1 10.79t 4.52 (12fi/12(i)

T!.-18 22.17*2.2S f t /'. )

g,77;1,37 (6/6)

( 0)

(4.75 - 25.72)

(18.68-25.72)

(6.01-10.76)

(F) THE FRACTION OF DETICTtRI.I' MEAStTRfMENTS AT A SPFCIFIED LOCATION IS IN'ilrATf D IN P AREVTlif SIS.

NON-Rotrr!NE INDICATES Till NINBl.R Of SEPARATF 'fEASUREMENTS Wll!Cif WERT CRI ATTR titan T!.N (10) TIMES TitL A\\TR.E! BACLGROtIND FOR Tile REPORT PERIOD.

h i'

a

YANKlili It0Wii Locations of Sample Points and Monitoring Stations TABLI! 11 Air Monitoring Locations Sampling and Analysis i equency Gross Alpha and Gross Beta - Weekly / Comma Isotopic - Monthly Distance-(KM)

Location from Plant Azimuth Zone I Al Furlon llouse 0.8 232' A2 Ilarriman Station 3.2 357' A3 Ford 11i11 Road 2.7 152' A4 Observation Center 0.5 313" Zone 11 AS Williamstown, Mass.

22.2 265

NOTE:. Zone I (indicator) locations are those locations considered within the possible influence of routine plant releases. Zone 11 (control) locations are considered outside the influence of plant operations.

Monitoring of control and indicator stations allows comparisons of activity in sample media while minimizing the problem of changes in natural or fallout exposure rates or levels of activity from causes not related to station operation.

TABLE III Water Sampling Locations O

i Sampling and Analysis Frequency - Monthly Distance from Location Discharge Point (KM)

Direction Zone I W1 Sherman Pond -

Discharge Area 0.1 349 W2 Bear Swamp -

No. 5 Station 6.3 Downriver W4 Plant Potable (Onsite Well)

W8 Sherman Spring 0.2 304 Zone II W3 Harriman Station 3.5 Upriver-W5 Harriman Reservoir 10.1 Upriver Distance from Center of Vapor Container (KM)

W6 East Storm Drain

0.1 6

W7 West Storm Drain 0.2 280

The east and west storm drains collect runoff from the plant. These samples actually represent a form of plant affluent. They are reported as environmental in nature because they are sensitive indicators of plant conditions regarding general contamination.

I i

w

TABLE IV Milk Sampling Locations Sampling and Analysis Frequency Monthly Location Distance from Plant (KM)

Azimuth Zone I MI King Farm

3.6 353 Zone 11 M12 Mt. Williams Dairy Williamstown, MA 20.9 258o 4

1 As of June 1, 1975 the Zone I milk sampling station was changed from the Kingsley Farm to the King Farm.

O e

9

g=

.~ yg s ose,*g.,wwe #

g

~

TABLE V Fish and Aquatic Plant. Sampling 1,0 cations Sampling and Analysis Frequency Three Times Per Year Distance from Location.

Discharge Point (KM)

Direction Zone I FAI Sherman Pond (Southern End Near Discharge Point) 0.2 N

FA2 Deerfield River

-(No. 4 Station Reservoir) 36.2 Downriver Zone II FA3 Ilarriman Reservoir 10.0 Upriver.

?

l b

T l

f i

(

3 E

9 m

i a

e a

TABLE VI Maple Syrup Sampling Locations-Sampling and Analysis Frequency Annually - From Two Stations Location Distance from' Plant (KM),

Direction

Zone I M4 Veber Farm c

Rowe, MA 4.0 S

Zone II v3 M1 Coombs

?

4 Jacksonville, VT 9.1 NS I s x,s

- \\

M2 R. Ilicks Farm

'. _ ). ' ;'"V SE 72 Charlemont, MA 8.0. y w

M3 Truesdell's Sugar flouse Colrain, MA 16.9 E

h Js.

/

6 s

g\\.

r M

4 t

.,a.;;.

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

e 7

es - d..

79 s

a-t t;.

E i

[, l'

-TABI,Il VII

',', Sgi14 x,

cad Ve2ctation Sampling Locations Sampling and Analysis Frequency Three Times Per Year Distance from Center Location Vapor Container (KM)

Azimuth s

Zone 1 SV1 Plant Site w

0.1 132*

SV2 Dunbar Brook 3.2 216' s

SV3 West Cemetery 3.2 150*'

y SV4 ilarriman Station-3.2 359' L

SV5i Field LaborEtort Site 1.0 230*

s.

SV6 Crossroad

~ ~

3.5

._ 8 3

SV7 Whitingham Line >

3.5 32*

SV8 ' ' Adams Hi-Line 2.1 289*

~

Zone II SV9 Williamstown 22.2 265*

i s

9 b

b i

f l

A

> ~

\\

i l

\\

I i

\\

s i

e' g,

)

l q

.s, 1

s

+

l r

g g

"'18'

"^ -

y e

o TABLii VIII Rivrr Sediment Sampling Locations Sampling and Analysis Frequency 1hree Times ver Year llistance from Location Discharge Point (River DI)

Direction 2onc I SE1 Sherman Pond (Condenser Out fall Area) 0.08 349' SE2 Sherman Pond (Above Sherman Dam) 0.18 320' SE3 No. 5 Station Pond (Below Sherman Station Spillway) 0.55 Downriver SE4 No. L Station (Above No. 5 Canal Entrance) 1.12 Downriver SES Deerfield River (Upstream of Rte. 2 Bridge at Mohawk Park) 21.5 Dcwnriver SE6 Deerfield River (Near Gar Chris Hotel) 29.9 Downriver SE7 Deerfield River (No. 4 Station Pond) 36.2 Downriver SE8 Confluence of Deerfield River with North River 38,0 Downriver Zone II SE9 liarriman Station (from foot bridqc) 3.4 Upriver SE10 liarriman Reservoir 10.1 Upriver Distance Upriver of Confluence Location of North and Deerfield Rivers Direction l

Zone II Sell North P.iver (Griswoldville Dam Pond Above) 5.1 Upriver SE12 North River (former Lyonsville Dam Site) 7.2 Upriver SE13 North River.(West Branch) 6.3 Upriver SE14 North River (Griswoldville Dam, Pond Below) 4.8 Upriver O

-p,.,m-y

v-------

o J

1 TABl.li IX

.TLD Monitoring Sites Zone I Distance from Center Station Number Location of Containment Bldg. (KM)

Azimuth 1

Furlon !!ouse 0.8 232' 2

Observation Booth 0.5' 313' 3

Ford !!ill Road 2.7 15.!"

4 liarriman Station 3.2 359' 5

Monroe Bridge 1.3 240' 6

Readsboro Road Barrier 1.3 355' 7

Whitingham Line 3.5 32' 8

Monroe 11111 Barrier 1.8 182*

9 Dunbar Brook 3.2 216*

10 Cross Road 3.5 83*

11 Adams liigh Line 2.1 289*

12 Roadsboro, Vermont 5.5 344' 4

13 Restricted Area Fence

.08 255*

j 14 Restricted Area Fence

.11 300*

i 15 Restricted Area Fence

.08 345*

16 Restricted Area Fence

.13 3G*

17 Restricted Area Fence

.14 70*

18 Restricted Area Fence

.14 115*

19 Restricted Area Fence

.16 140*

i 20 Restricted Area Fence

.16 160*

21 Restricted Area Fence

.11 205*

Zone 11 22 Williamstown Substation 22.2 265*

l x.m n x a

- - ~.. - -.

W

~

TABl.I! X -

lil'.TITTION CAPABILITiliS l'OR l'NVIRONHiiNTAl. RADl01.tV;iCAI SAkiPI.I:

ANAI vs t <;

Air l' art iculate (includitia Charcoal Vegetation and Aquatic l'lantr. (algae) 1-131) 3 Cross Alpha 0.002 pCi/in Gross Alpha 0.1 pCi/gr Cross Icta 0.004 Gross licta 0.060 Sr-89 0.004 Sr-89 0.030 Sr-90 0.0007 Sr-90 0.005 I'-131 0.003 Be-7 0.200 He-7 0.02 K-40 0.500 K -40 0.04 Hn-54 0.020 4*n-54 0.002 Co-53 0,020 Co 58 0.002 Co-60 0.020 Co-00 0.002 Zr-95 0.010 Z r-9'.

0.003 Ru-103 0.020 1

1:u-103 0.002 Ru-106 0.200 Hu-106 0.02 Cs-134 0.020 Cs-131 0.002 Cs-137 0.020 Cs-137 0.002 Ba-140 0.080 In 140 0.005 Cc-141 0.040 l

Cc-111 0.003 Cc-144 0.200 Cc-141 0.02 Ra-226 0.100 P.a-226 0.009 Th-228 0.020

lb-2?8 0.009 I!a t er n'ul Precipitation River Sediment and Soil Gross Alpha 0.3 pCi/ lit er Gross Alpha 5.0 pCi/gr

(;ross 1:et a 0.9

~ Gross lieta 1.3 Ra - 22 6:*.

1.0 Sr-h9 0.400 11 - 3 90 Sr-90 0.080 Sr-89 4

Be-7 0.200 Sr-90 0.S K -40 0.500 Es.- 7 80 Mn-54 9.020 K-40 200 Co-58 0.020 Mn 54 8

Co-60 0.020 Co-5S 8

Zr-95 0.040 Co-60 8

Ru-103 0.020 2r-95 10 Ru-106 0.200 Ru-103 8

Cs-134 0.020 Ru-106 80 Cs-137 0.020 Cs-131 9

Ila-140 0.040 Cs-137 9

Cc-141 0.010 Ba-140 15 Cc-144 0.200 Cc-141 20 Ra-276 0.100 Ce 141 80 Th-223 6.020 ftn-?d6 60

'l b-2 'S 10 Ra-226A by alpha analysis Ra-226 by gamma analysis gs'pv ger WWy p-%.hg *bWw

"=8pe WahP7*"?****f*-

"-~'#"'"

1

--;__M'WW'*%+

^

I 4 !.

- i

'e

. TABLE-X e

DETl!CTION CAPABILITilis I:0R liNVIRONMl!NTAI, RADIGI,0GICAL SA*1PLE ANALYFIS (CONTINill!D) o Maple Syrup and flilk t

Anelid Erms - Iish - Shellfish -

Hollusts - Food Crops - Arthrepods Bot tout Organisn.s - Feed and I orage Gross I; eta 2

pCl/ liter Gror.s ibia 0.050 pCi/gr t.et C -14 75 Sr-89 0.030 Sr-59 4

Sr-90 0.005 Sr-90 0.8 Be-7 0.200

I -131

0. 5 K -40 0.500 l'e-7 80 lin'-54 0.020 K. -40 200 I

Co-58 0.020 fin-51 8

Co-60 0.020 Co-58 8

Zr-95 0.040 Co-60 8

Ru-103 0,020 Zr-95 10 Ru-106 0.200 Ru-103 8

Cs-134 0.020 i

l'u-106 80 Cs-137 0.020 Cs-131 9

i Ba-140 0.0S0 Cs-137 9

Cc-141 0.010 lia-140 15 Cc-144 0.200 Ce-141 20 Ra-226 0,100 Cc-141 80 Th-228 0.020 Ra-226 60 11 - 3 0.020

'!h 22?

10 1

Not included in Maple Syrup

.,n.-_

~ _.,

aA

1

,. 1 --

ERRATA SFiEET FOR YANKEE ROWE JANUARY 1 - JUNE 30, 1975 Corr:ction Lower Limit of All Indicator Station Highest Annual Mean Control Incation er Type of Analysis Detection Mean Range Wan Range Mean Range Reported

_ Media 1 rformed (LQ_.

(F)

Reported Air Pgrticulate Gross A 0.00067 0,0012+0.00071(64/104) 0.0013+0.00017(15/26) 0.0011t0.00017(17/26) pC1/m (0.003-0.002)

(0.0037-4.0031)

(0.004 8-0.0029)

(0.0052-0.002)

Corrsction 0.0c067 0.0012_+0.00076(59/104) 0.001310.00019(13/25) 0.001110 00017(15/26)

(0.0003-0.007)

(0.00052-0.0031)

(0.0071-0.0029)

(0.00052-0.002)

Reported Terrestrial Zr-95 0.07 0.1210.052(1/1) 0.1210.052(1/1)

< LI.D Vegetation (0.04-0.09)

(pCi/g-wat)

Con setion Zr-95 0.07 0.1210.052(1/8)

(0.04-0.09) 0.1210.052(1/1)

<LLD 4

Leported Ce-144 C 19 0.6910.18(1/8) 0.6910.18(1/8)

<tLD (0.08-0.3)

Correction Ce-144 0.19 0.69+0.18(1/8) 0.69+0.18(1/1)

<tLD (0.08-0.3)

~

Report d Soil Ra-226 0.8 1.37+1.14(8/8) 1.9210.20(1/1)

<LLD (pci/g)

(0.54-1.92)

Corrsction Ra-226 1.0 1.37+0.11(7/8) 1.92_4.26(1/i)

<1LD (0.80-1.2)

(0.5T-1.92)

_Y

, ' ' ~~~

__52;

.?"'

.n.

i

-i 7l

/* 4 l

ERRATA SHEET FOR YANKEE ROWE JANUARY 1 - JUNE 30, 1975 (continued)

Correction Lower Limit of All Indicator Station Highest Annual h an Control Location or Type of Analysis Detection han Range h an Range h an Range Reported hdia Performed (LLD)

(F)

(7) _

(F)

Reported River Cross A 4.4 14.5+3.2(3/8) 19.0+6.0(1/1) 8.3+4.7(1/6)

Sediment (4.0-5.9)

(6.4-19.0)

~

Correction Cross A 4.6 18+4.2(2/8) 19.0+6.0(1/1) 8.3+4.7(1/6)

(4.0-6.4)

(18.0-19.0)

RIported hple Syrup Ru-106 20.0

<LLD

<LLD (pC1/g)

Co'rrection Ru-106 200.0

<LLD

< L13

(

1

-

ML20031C189

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