ML20150E936

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Preoperational Environ Radiation Survey Rept Quarterly Rept,710101-0331
ML20150E936
Person / Time
Site: Pilgrim
Issue date: 03/31/1971
From: Fix R, Rich Smith
BOSTON EDISON CO., INTERNATIONAL CHEMICAL & NUCLEAR CORP.
To:
References
NUDOCS 8804040190
Download: ML20150E936 (29)
v • d • e


Text

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PILGRIM NUCLEAR POWER STATION PREOPERATIONAL ENVIRONMENTAL RADIATION SURVEY REPORT QUARTERLY REPORT January 1, 1971 March 31, 1971 BOSTON EDISON COMPANY BOSTON, MASSACHUSETTS d2;L B C. L PersonresponsibleforICN/TRACERLAB analyses of samples & review of data

/ ,/n,) (' / 4 /

Person responsible for BECo program 1 l .

ICN/TRACERLAB l Chemical & Radioisotope Division  !

International Chemical and Nuclear Corp. j 1601 Trapelo Road, Waltham, Massachusetts 02154 1

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l DISCUSSION OF RESULTS Air Surveillance Air particulate activity as judged from the monthly averages has started the anticipated increase which normally occurs af ter winter. The rate of increase l

1s greater than in the corresponding period of 1970 for comparable programs reflect-ing the new debris injected into the atmosphere from a distant nuclear test on Oc tot e r 14, 1970. The presence of this new material was seen during two weekly periods in 1970 and may have been seen during the period 2/9 - 2/16 during this quarter, but at much lower levels.

The agreement between the on-site, eff-site and reference stations con-tinues satisfactory.

Gamma monitoring using thermoluminescent dosimeters was continued through the period. On-site values on a monthly average basis compare well with off-site values. New dosimeters were put into service in February and the entire system was recalibrated to minimize variation. Several additional months of data are needed i to permit detailed evaluation.

Aquatic Surveillance Domestic and recreational water samples yielded analytical results which are comparable to those seen previously. Great Pond continues to be higher in gross beta activity than College Pond or Little South Pond. This has generally been the case since early in the program and most likely reflects a different watershed.

Great Pond samples have been noted to have a much greater concentration of solids.

Well water samples continue to show the lowest gross beta activity and 90 Sr has been detected in only one sample since the start of the program.

Seawater fractional beta values for fractions I (insoluble) and IV (cesium) are consistent with earlier data. Fraction II (sulfides) and III (carbonates) are

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somewhat higher than the corresponding period of 1970, but are consistent with the fourth quarter 1970 data.

Marine life data are similar to that observed previously.

Terrestrial Surveillance The only samples taken during this period were of milk. No other crop or food samples are available at this time of the year.

90 Sr and 137 Cs values showed somewhat more variability than observed during the previous quarter; however, the average values for this period compare favorably between locations. Since milk is probably in the critical pathway for radioactivity deposited on land, these data should be observed closely to insure that the sources of variability are minimited.

SD MARY The pre-operational environmental radiation surveillance program appears to be providing the ccrrelation of data between locations which will permit mean-ingful comparisons for the operational data. Tb' . ral variability to be expected is also being defined.

No changes in the program are recommended at this time.

TABLE IA KEY FOR TABLES IB & IC Distance and FSAR Reference Direction From Sample Table 2.o.1-Sampic Location Station DesRination Item #

East Weymouth 23 - miles NW EW 7 Plymouth Center 4.5 - miles W-WNW PC 6 Cleft Rock Area 0.9 - miles S CR 4 Manomet Substation 2.5 - miles SE MS 5 l Rocky Hill Rd. , WNW Onsite WR 2 1

Overlook Area Onsite OA 1 Rocky Hill Rd. , SE Onsite ER 3 l

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TABLE IB COMPARATIVE MONT11LY VALUES FOR GROSS BETA RADI0 ACTIVITY (Concentrations in pCi/m3)

Means Collection Period Re fe rence Off-Site On-Site 1971 (EW) (PC) (CR) (MS) (WR) (OA) (ER)

Jan. 0.12 0.12 0.13 0.12 0.12 0.13 0.11 Feb. 0.12 0.14 0.13 0.12 0.14 0.14 0.13 Fb r . 0.27 0.27 0.28 0.27 0.30 0.32 0.31 TABLE IC COMPARATIVE MONTIILY VALUES FOR GROSS BgTA RADIDACTIVITY (Concentrations in pCi/m )

Ranges Collection Re fe rence Off-Site Period On-Site (EW) (PC) (CR) (MS) 1971 Min. Max.

(WR) (0A) (ER) i Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. l Jan. 0.11 0.12 0.11 0.13 0.12 0.17 0.10 0.14 0.09 0.14 0.11 0.15 0.09 0.13 Feb. 0.09 0.14 0.09 0.18 0.08 0.15 0.09 0.18 0.10 0.18 0.08 0.21 0.10 0.17 lb r . 0.23 0.34 0.24 0.33 0.23 0.36 0.18 0.35 0.25 0.36 0.24 0.48 0.25 0.35 l llll

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

FIG. 1A; 0FF SITE AIR PARTICULATE COMPkRATIVE MONTHLY VALUES FOR OROSS BETA RADION;TIVITY (pCi/m3 )  % h R.ead4ng For Month Au rage For Month

_ EAST 'EYM0dTH Icr Reading For Month 0.6 -  ;- l

~ l 0.6

,, F 0.4 -

~

\ L- 0.4 y _ --

__ i 1 ~

I l

0.2 - I T T

T - 0.2 I

I i

_ _L --

T- -

0.0 ~~

MAR.IAPR. IMAY I JUN.l',JUI . T AUG. I STP. i OCT. I NOV. I DEC. l JAN. I FEB.TMARTT------ - 0.0 1

_ PLYMOUTH CENTER r

0.6 -

0.6

, r 0.4 A

~~

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- 0,h

~

~

1 _ _-

0.2 - ,-

T _- L- 0. 2

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i  ;

0.0 MAR.I APR. IMAY i JUN I JUL. I AUG. I SEP. I OCT. I NOV. I DEC. l JAR- TPsBURIR~ T

, CLEFT ROCK AREA i T-

0. 6 ~ "

- 0.6

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1 3 0.4 *i " 0.4

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M R U APR. IMAY 0.0 I JUN. I JUL. l AUG. I SEP. I OCT. I NOV. I DEC. l JAN. I FEB. I MAR. I MAN 0 MET SUBSTATION l

1 0.6m] ._

L- 0.6

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0.4 L_0.4 L

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_  : i 0.0 l MAR.I~APR.IMAY l JUN. I JUL. I AUG. I SEP. I OCT. I NOV. I DEC. JAN. IFEB. IMAR. I 1970 1971

FIO. 18: ON SITE AIR PARTICULATES COMPARATIVE MONTHLY VALUES FOR OROSS BETA RADIOACTIVITY (pC1./m3) --

High Reading For Month Average For Month a ng For k n %

g ,g _ OVERLOOK AREA 0.8 - - 0.8 _

0.6 - _

- 0.6 0.4 - .l ..

T

- 0.4

~~

0.2 -- - -- --

- 0.2

--I '

I _

.. _I MAR.I APR. i MAY 3 JUN. I JUL.I AUG. I S EP . I OCT. I NOV. I DEC. l JAN. I FEB. I MAR. I 1.0 - EU HILL RD.. EAST -.1.0  :

0.8 - p 0.8

0. 6 - - 0.6 0.4 - --0.4

~~

{ 0.2 - -

7 1

l I

T a

I .2 0

0.0 MAR. 3APR. IMAY I JUN. I JUL. I AUG. I SEP. I OCT. I NOV. I DEC. l JAN. I FEB. I MAR.1 _

1.0 - ROC H HILL RD.. E T - 1.0 0.8 d - 0.8 0.6 - - 0. 6 1

0.4 - - 0.4 p

0.2 - ~

- 0.2 7

- 1 ,1 __

I I 1 u 0.0 -

0.0 MAR. l APR. [RIT~TJUT J JUL. l AUG. l SEP.10CT. l NOV. { DEC. ~JAICTPIs. I MAR. l 1970 1971 l

1 1jl

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oe 2 2 1 1 2 1 2 1 2 3 4 6 4 2 2 2 R t 0 0 0 0 0 0 0 0 0 0 0 0 0 - - -

i 0 0 0 l s l n 0 0 0 0 0 0 0 0 0 0 0 0 0 )

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iO  ! ! ! ! : ! ! !  ! 2 2 2 H -

ys t 3 2 0 9 1 0 7 0 5 5 2 3 5  !

1 1 1 0 1 1 1 1 1 2 3 3 3 k a 2 2 9 cE 0 0 0 0 0 0 0 0 0 0 0 0 0 ( ( (

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- 2 2 2 2 2 1 3 1 2 3 3 3 5 2 2 2 k 0 0 0 0 0 0 0 0 0 0 0 0 0 -

0 0 0 o 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 oa ) ) )

l e  ! 2 1 2 ! 2 2 ! 2 2 2 rr eA 1 51 3 3 4 8 1 0 8 9 8: 4 8  ! 2 !

v 1 1 1 1 0 2 1 2 2 2 4 O . . 3 3 8 0 0 0 0 0 0 0 0 0 0 0 0 0 ( ( (

d a

oe 2 2 1 1 2 1 2 2 2 3 3 3 4 2 2 2 Rt 0 0 0 0 0 0 0 0 0 0 0 0 0 - - -

i 0 0 0 l s 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 l n ) ) )

iO  ! ! ! !  ! ! 1 !  ! 2 2 2 H -

t 3 4 9 0 4 0 18 21 6 0 5 9 6 2 ys 1 1 0 1 1 1 3 2 2 3 k e . 1 3 2 9 cW o 0 0 0 0 0 0 0 0 0 0 0 0 0

( ( (

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y) t m t3 i/ i m vi 1 2 2 2 2 1 2 1 2 3 3 4 2 2 S iC E t p n

o 0 0 0 0 0 0 0 0 0 0 0 0 iv/-

t mp 0 0 0 T c t i 0 0 0 0 0 0 0 0 0 0 0 0 cc 1 1 1 A A an et ) B a ) ) )

I L oi ma  ! 2 ! t  !  ! ! 2 b !  ! 1 I on 2 2 2 I U i ot ( I ii C d s ns 0 21 2 4 2 9 8 9 8 9 7 5 d  ! 2 E I an ab 1 1 1 1 0 1 0 1 2 2 3 E as L T R o M u L R n 2( 3( 8 B R i S 0 0 0 0 0 0 0 0 0 0 0 0 B o (

/ Aat A ai 1 P t a T mt ar ma R B t ar I n Gt A se n 2 2 sc 2 2 2 2 2 1 2 2 2 3 3 4 4 se on k 0 0 0 0 0 0 0 0 0 0 0 0 0 sc - - -

ro c o on 0 0 1 0 GC 0 0 0 0 0 0 0 0 0 0 0 0 0 ro 1 ) 1

( R a ) )

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f A 9 e 2 1 41 12 2 17 81 50 5 13 3 1 3 2 6  ! ! ! 1 l 1 2 2 3 3 C

. . 3 2 8 1 0 0 0 0 0 0 0 0 0 0 0 0 0 ( ( (

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1 1 o 2 1 2 3 3 3 4 2 i h 0 0 0 0 0 0 0 0 0 0 0 0 0 - - - h t t r 0 0 0 t c u e 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 u n ot ) ) ) o u mn ye

!  ! 2 2 ! ! ! 2 !  ! ! 2 2 2 m f y l l C 3 2 1 1 1 01 8 9 8 4 5 7 3 2  ! e a P 1 1 1 1 1 1 0 1 2 2 2 3

. 5 3 8 Wm 0 0 }0 0 0 0 0 0 0 0 0 0 0 ( ( ( t s n t

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E m 2 2 2 2 2 1 2 1 2 3 3 3 4 2 p h 0 0 0 0 0 0 0 0 0 0 0 0 0 0 - - & i t

t u 0 0 0 u so 0 0 0 0 0 0 0 0 0 0 0 0 0 1

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0 1 1 2 2 2 3 C

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1 7 y p 6 0 6 4 8 5 1 7 9 l m n 3 2 2 2 6 2 4 1 1 2 3 9 1 1 P a o 1 1 9 1 1 1 7 s i d 1 1 2 2 3 . 3 3 3 y 9 r t o - 1 2 2 3 y r 1 o o ci er 9

- - - - - - - - r a F N

- - - - a u h l e l P 2

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6 4 1 8 5 u r c o 2 2 2 9 1 2 4 1 1 2 n b r ) )

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TABLE III AIR PARTICITLATES Iodine-131 Activity (Concentrations in pCi/m )

Collection East Plymouth Cleft Rock Manomet Rocky 11111 Road Overlook Rocky Hill Road Period Weymouth Center Area Substation West Area East 1.3 - 1.26 <1 <1 <1 <1 <1 <1 <1 1.26 - 2.9 <1 <1 <1 <1 <1 <1 <1 2.16 - 2.24 <1 <1 <1 <1 <1 <1 <1 2.24 - 3.4 <1 <1 <1 (a) <1 <1 <1 3.11 - 3.18 <1 :1 <1 <1 <1 <1 <1 3.18 - 3.25 :1 <1 <1 <1 <1 <1 <1 l

l (a) 2;o sample due to equipment malfunction.

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TABLE IVA KEY FOR TABLE IVB Distance and FSAR

Reference:

Direction From Dosimeter Table 2.6.2-Dosimeter Location Station Designation Item #

East Weymouth 23 - miles NW EW 19 Kingston 10 - miles WNW KS 17 Sagamore 10 - miles SSE-S CS 18 Plymouth Airport 8 - miles WSW SA 16 Duxbury 6.25- miles NW SS -

Plymouth 6.5 - miles SSW-SW CP -

North Ply.auth 5.5 - miles WNW NP 15 Plymouth. Center 4.5 - miles W-WNW PC 14 South Plymouth 3 - miles WSW SP 13 Manomet 3.5 - miles SE-SSE MB -

Mancmet 2.5 - miles SSE MS 11 Manomet 2.5 - miles SE ME 12 Manomet 2.25- miles ESE-S MP 10 Cle f t Rock Area 0.9 - miles S CR 9 Rocky Hill Road 0.8 - miles SE ER 8 Bayshore Drive 0.7 - miles W-WNW BD -

Rocky Hill Road 0.3 - miles W-WNW WR 7 l

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TABLE IVB MONTHLY AVERAGE DOSE RATE

  • uR/hr Off-Site Station Jan. Feb. March East Weymouth (EW) 5.3 9.4 9.2 Kingston (KS) 4.7 12.0 9.2 Sagamore (CS) 5.4 13.2 9.9 Plymouth Airport (SA) 4.8 7.3 7.6 Duxbury (SS) 5.3 6.1 7. 7 Plymouth (CP) 4.9 8.0 8.0 North Plymouth (NF) 7.1 9.7 9.9 Plymouth Center (PC) 6.5 9.4 6.6 South Plymouth (SP) 6.7 9.0 8.9 Manomet (MB) 4.1 5.9 5.8 Manomet (MS) 6.0 9.6 9.0 Manomet (ME) 8.0 10.6 8.5 Manomet (MP) 5.1 7.3 5.9 Clef t Rock Area (CR) 6.4 9.2 8.4 Rocky 11111 Rd.-SE (ER) 6.8 15.1 8.6 Bayshore Drive (BD) 7.0 8.9 11.7 Rocky Hill Rd.-WNW (WR) 7.0 8.8 10.4 (a) Net dose rate after subtraction of 6.6 uR/hr dose rate inherent in dosimeter.

TABLE IVC KEY FOR TABLE IVD Distance and FSAR

Reference:

Direction From Dosimeter Table 2.6.2-Dosimeter Location Station Designation Item #

Overlook Area 0.03 - miles S OA 2 Public Parking Area 0.07 - miles N-NNE PA 3 Rocky Hill Rd. , SW 0.12 - miles SW A Rocky Hill Rd. , SSE 0.26 - miles SSE B 5 East Breakwater 0.26 - miles ESE EB Microwave Tower 0.38 - miles S MT 6 Property Line 0.33 - miles ESE-SE C Property Line 0.34 - miles SE HB Property Line 0.89 - miles SE-SSE WH Property Line 0.68 - miles SE-SSE EM i Property Line 0.75 - miles SSE-S E l

Property Line 0.21 - miles SSW H 4 Property Line 0.20 - miles WSW G Property Line 0.14 - miles W I 1 Prope rty Line 0.12 - miles NW F Property Line 0.17 - miles NNW D Property Line 1.36 - miles SSE-S J Property Line 1.42 - miles SSE-S K l

1

TABLE IVD MONTHLY AVERAGE DOSE RATE a) uR/hr On-Site Station Jan. Feb. March Overlook Area (0A) 6.0 8.8 7.7 Public Parking Area (PA) 6.5 11.0 8.3 Rocky Hill Road (A) 5.9 8.9 8.8 I

Rocky Hill Road (B) 6.1 9.2 10.3 East Breakwater (EB) 6.5 13.9 9.0 Microwave Tower (MT) 6.8 9.1 7.4 Property Line (C) 5.4 9.4 8.6 Property Line (HB) 5.7 11.5 8.2 Property Line (WH) 6.2 8.9 6.6 Property Line (EM) 5.0 13.6 7.0 Property Line (E) 4.2 (b) 7.8 Property Line (S) 7.0 9.0 9.7 Property Line (G) 6.1 8.4 9.2 Property Line (I) 6.4 8.2 9.5 Property Line (F) 7.6 7.8 9.8 Property Line (D) 8.8 11.8 10.8 Property Line (J) 9.4 7.2 8.1 Property Line (K) 6.0 8.2 8.0 (a) Net dose rate af ter subtraction of 6.6 uR/hr dose rate inherent in dosimeter.

(b) Ins t rument malf unc tion.

FIG. 2A: OFF SITE AVERAGE EXTERNAL GAMMA DOSE RATE *

(ur/hr)

Highest Monthly Dose Rate For Station Average Dose Rate For Station I Lowest Monthly Dose Rate For Station 20 ,

l r--- 20 18 d l - 18 i

6 l - 16 14 -

_ 74 T-4 12 d --

I -

l l

f12 l

j 10 -4 ~

l i

__ t-10

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! 1 l  ; i i  ! l i i t

i -  !

l l O t L A l -

I I I E'.i i KS i CS l SA SS CP NP j PC . SP I MP l MS f ME CR  !

ER l BD WR ] **l

  • Includes only those stations which have been in service eight or more months.

Average of off-site stations

FIG. 29: OLSITE AVERAGE EXTERNAL GATIA DOGE RATE *

(ur/hr)

Highest Monthly Dose Rate For Station Average Dose Rate For Station

  • Lowest Monthly Dose Rate For Station 20 -

r-20 18 M _ gg 16 - - 16 14 - __

_ gg 12 4 __

!  : __ __ --12 6 __

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b _ _f._ c l C i  ? A ,.

.-  ; B lMT C EM 2 H 'l i I i ? lD l** j

  • In: lades only those stations ahich hwe been in service eight or more months.

I Ave ra ge of on- site s ten ti ons

TABLE VA KEY FOR TABLE VB l

Sample Distance and Direction l Sample Location Designation from Station Great Pond

  • GP 24 - miles WNW-NW Little South Pond
  • SP 4.75 - miles W College Pond CP 6.5 - miles SSW-SW Lout Pond Well* LW 4.75 - miles W Manomet Well* MW 2.75 - miles SSE
  • Designated in FSAR, Sect ion 2.6. 3.1

TABLE VB D0'IESTIC NJD RECREATION WATER Collection Analysis Period GP SP CP LW MW Gross Beta Jan. 7.1 1 1.0 4.7 1 1.0 (a) < 1. 0 < 1. 0 (PCi/L)

Feb. 6.8 ! 1.0 4.3 1 1.0 5.4 1.0 < 1. 0 < 1. 0 Fb r. 7.6 ! 1.0 5.7 ! 1.0 5.2 2 1.0 1.3 1.0 1.5 2 1.0 Gross Gamma Jan. < 10 <10 (a) < 10 (cpm /L) 14 ! 10 Feb. < 10 <10 <10 <10 <10 Mar. < 10 < 10 < 10 <10 < 10 Sr-90 Jan. 1.1 ! 0.5 0.6 0.5 (a)

(PCi/L) < 0.5 < 0.5 Feb. 0.8 ! 0.5 0.5 ! 0.5 < 0.5 < 0.5 < 0. 5 Mar. 0.9 ! 0.5 < 0.5 < 0.5 < 0.5 < 0.5 II-3 Jan. < 2.5 < 2.5 (PCi/ml) (a) < 2.5 < 2.5 Feb. < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Mar. < 2.5 < 2. 5 < 2.5 < 2.5 < 2.5 l

I-131 Jan. <5 <5 (a) <5 <5 l

(PCi/L) Feb. l

<5 <5 <5 <5 <5 lb r. <5 <5 <5 <5 <5 One (1) cpm is equivalent to 4.5 pCi if activity is assumed due to Cs.

(a) lake frozen; sample unobtainable.

FIGo 3 OROSS Br~.,rA IN OROUND AND SURFACE WATERS (pci/ lit.r)

- -- < 1.0 pCi/ liter 10 -_, LOUT POND WELL _ to 5- 5 t -

u______________

~~

A IS 10 IN ID lJ IF IM I A IM IJ IJ I A IS IO IN ID lJ IF IM i 10 - MAN N M to i

5 ;_, -5 i

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- i _____________._a i

A 'S iO IN ID IJ iF IM I A iM IJ IJ I A IS 10 INIDlJIFIMi GRM M 15 -' - 15 10 - l i

[- 10 I i

._j i I '

,  ; , i 5- -5 I

t

---O YT O ' N I D IJ I F IM I A IM IJ IJ I A 'S 10 IN ID lJ IF iM i 15 _ LIrrLs SOUTH POND r-15 10 - --10 l

5-I 1_1 ,

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r-- r-5 I

A iS iO IN I D IJ IF I M I A iM IJ IJ I A IS 10 ig FD IJ IF IM i -0 g$ COLLEGE POND

_g$

l 10 -

-10 5j -

, _. --5 0 ~0 iS10INlD J TrT!frA I M ( J I J I A I Sl 0 I N j D JjfTMi 1969 1970 1971

FIG. 4: STRONTIUM-90 IN SURFACE WATERS (pCi/ liter)

- - - < 05pci/ liter 5- ~5 l l .

4-i

}4 l

32 1 3

2 -- 2 1- , l I

r1

__J __J _.

q 0 -T A T'I S 07ilTDI J TyT M TTA I'JTJTA M TSTOTN I D [ J TF iK~~~~ ----

- - -- A 0 5< * *** P "D l c5 l

4 .! .4 3- -3 2-  ! I

-2 i

1- -1

___.___J . _ __ ] I m.___

A S O N ' i)TJT F M i A I M i J'JI A IS 1 0 I N 'D lJ I F IM i i i - - ~ ~ ~

COME POND 5q _g i

4f V4 3

-3 2- L2

- 1 I l l 1- l l -1 L_

~~ll TS76TNTD- 3TYTWFA l M l J l J l A I STCri'N FtP~J TFTM F~~~ ~~ ~~

'O 1969 19'70 1971

TABLE VIA SEAWATER Collection Fractional Gross Beta; pC1/L Gross Gamma H I I

Location Date Frac. I II III IV cpm /L pCi/ml pCi/L Pilgrim Site 1.19.71 15 5 13 ! 5 18 5 8 5 < 10 < 2. 5 <5 2.24.71 <5 16 5 8!5 <5 < 10 < 2.5 <5 3.9.71 <5 12 ! 5 13 5 <5 < 10 < 2. 5 <S December '70 8!5 13 5 <5 <5 < 10 < 2. 5 <5

- March '71 Composite TABLE VIB SEAWATER (Concentrations in pCi/L)

Locatisa a ' Sr Cs 54 g 58,60 Co 65 2n Pilgrim Site December '70 < 0. 5 *

  • 0.20 ! 0.03 <5 <5 <5 l

- March '71 Composite f One (1) cpm is equivalent to 4.5 pCi if activity is assumed due to Cs.

    • volume analyzed - 17.0 liters

( - _ _ _ _ _ _ _ _ _ . _ _

TABLE VII MARINE LIFE Sacple Collection Cross Leta Gross Gamma Sr Cs Mn

  • Type I Co Zn Fe Location Date pCi/gm cpm /gm pCi/gm pCi/gm pCi/gm pCi/gm pCi/gm pCi/gm pCi/gm Flounder Pilgrim Site 1.18.71 4.3 2 0.2 0.02 ! 0.01 <0.005 < 0.05 < 0. 2 < 0.1 < 0.1 < 0. J < 0.1 Rocky Point 2.16.71 4.1 1 0.2 0.05 2 0.01 0.010 0.005 < 0.05  : 0.2 < 0.1 < 0.1 < 0.1 < 0.1

. Cod Pilgrim Site 1.4.71 3.8 ! 0.2 0.01 1 0.01 < 0.005 < 0.05 < 0. 2 < 0.1 < 0.1 ' .1 < 0.1 l

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  • One (1) dpm is equivalent to 4.5 pCi if activity is assumed due to Cs.

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=

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g

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-+ - 12/70 g 3 --

- 11/70

> g* --+ - 11/70 3 2h + - 10/70 0 +

T B - 7/70 30 - 4/70 h - 11/69

- 9/68 F I I I I I I I l l , I

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m b 3

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+

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-9/68 I I I I I I I I l l l l N w o m o D. c e at n N , o

12 _ Cents Beta (pCi/gn) .12 - GrossGamma(cpa/gn) 11 _ COD Mackerel .11 _ COD Mackerel 10 _ .10 _ fBelowdetection limit 9- .09 _

8_ .08 _

9

! 7- .07 _

6_ .06 _

5- .05 ---

4_ . Ole _

3_ .03 _

2_ .02 _

1_ .01 _ 4 0 .00 I I I I l l l l l l .I I I I I I m mm - -

am - m am - mm -

% %s  %% -  % %% --  % % -

m m -o % N m -o % m m -o % N m -o % i m u., og$ m og m mogM m og '

i1G. Su namo.criv1T In extiss lays (cou oc sc,uatat)

TABLE VIII MILK (Concentrations in pCi/L)

Collection Sampling Locations Analysis Period IIingham Plymouth Bridgewate r Cs-137 Jan. 17 1 18 1 1 13 1 Feb. 10 ! 1 (a) 62 1 Mar. 10 1 1 23 ! 1 19 i Sr-90 Jan. 9.3 0.5 9.7 ! 0.5 6.7 1 0.5 Feb. 17.2 1 0.5 16.2 1 0.5 13.4 1 0.5 Mar. 10.4 0.3 5.7 ! 0.4 9.2 1 0.4 I-131 Jan. <5 <5 <5 Feb. <5 <5 <5 Mar. <5 <5 <S Ba/La-140 Jan. <5 <5 <5 Feb. <5 <5 <5 Mar. <5 <5 <5 (a) re-analysis in process l

l 1

l

FIO. 6As CESIUM-137 IN MILK (poi /litar) fo _ HINGHAM

- 60 gJ

- 50 40 f 40 t

30 1 i j - 30 '

20 d l i I

. 20 l~

t l g] * 'lhis sample being re.

10 4 l

- 10 analyzed.

f-

-0

~ ~ATS 10 I N I D l J'TF l M I A i M I J I J I A I S 10 TNTD] I F I M i 50 - PLYMOUTH

- 50 40 - - 40 30 -

k 30

' I 20 4

' l 1 -- 20

> l l '

L_l L.

10 H h10 0

A i S ' 0 I N 3 D l J I F I M I A i M I J I J I A I S 10 I N I D l J TF I M I BRIDOEWATER 50 _

~ 50 40 -

7- 40 30 -

,- 30 I

20 m' - 20 10 - l l l

l L-10 A TS T6TRTo'TTF l M l A I M l J l J l A I S 10 I N I D'Tl F l M l

- - ~

0 IN9 1MO 191

FIOo 6B STRONTIUL 90 IN MILK (pci/ liter)

HINGHAM 20 - - 20 16 d l - 16 l

1

-12 " L.12 I

i 84 -8 l

li 4d .- 4 i 1

-- O AIS10INIDlJ'FIMIAiMIJIJIAIS10INIDlJIFiMi 20 - PLT 40UTH 20 16 - - 16 12 - - 12 1

8- I 8

l i i 4- u

~

O A8Si0lN3DlJIFIMlAIMlJIJIAIS10iNIDlJIFIMI l l 20 - BRIDGEWATER r- 20 16 - w 16 12 - - 12 l l .

8- i l r8 I

t 4~

h4 1

0 "O A Sl0lNlD JlFlMlAjMlJlJlAjSj0lNjD J j FlM j 1969 1970 1971

APPENDIX A Results Of Analyses Which Were Still In Process At The Time Of Printing Of The Report Covering The Period September 1,1970 To December 31, 1970 TABLE VB D0 2STIC AND RECREATION WATER Strontium.90 in December samples (pCi/L):

OP 1.1 1 0 5 SP 0.8 1 0.5 LW < 0. 5 104 <0 5 TABLE VIA: SEA 4ATER Fractional Gross Beta in December sample (pC1/L)

Frac. I <5 i

Frac. II 12 1.5 Frac. III 17 1 5 i Frac. IV <5 l

TABLE VIII MARINE LIFE Sample Collection h Date Analysis M Flounder 10.21.70 Sr-90 < 0.00f pC1/;m 11.17.70 <0.005 " "

12.15 70 Gross Beta 4.7 1 0.2 Oross Gamma <0.01 cpa/gm Sr-90 <0.005 PCi/gm Cs-137 <0.05 " "

I-131 <0.2 Mn-54 <0.1 Co-58,60 < 0.1

< 0.1 " "

2n 65 Fe-59 < 0.1 Cod 9.30.70 Sr-90 < 0.005 Mackerel " "

9.30.70 Sr-90 < 0.005 Pollock " "

9.30.70 Sr-90 0.006 1 0.005 11.18.70 0.013 1 0.005 Herring 11.18.70 Sr-90 0.021 1 0.005 Irish Moss " "

10.1 70 Sr-90 <0.005 TABLE IX: MILK Sanple Collection Location Data Analysis Result ,

Bridgewater 11 - 70 Cs-137 911 pCi/L Hingham 9 - 70 Sr-90 " "

11.6 1 0 5 " "

12 - 70 21.7 1 0 5 Bridgewater 9 - 70 "

10.4 1 0 5 12 - 70 10.2 1 0 5 Plymouth 12 - 70 "

6.4 1 0.4 " "

TABLE I: CROPS -

Sr-90 in cranberry sample of 10.6.70: 0.03910.005 pCi/gm

F- _ -

i d

EGUTORY1;D0sETillE 30PY  ;

RET.RN "O ftE311ATORY EigR' rES R00k O'S i

i t

l R

[}III 4 . 's a "w ,- y*.

iMl*AlbullUsil hub.J.1 ilu lditig '

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