Text

Annual Radiological Environ Surveillance Rept 1981
	ML20050C819
Person / Time
Site:	Maine Yankee
Issue date:	03/31/1982
From:	; Maine Yankee
To:	;
Shared Package
ML20050C813	List: ML20050C812; ML20050C819;
References
	NUDOCS 8204090381
	Download: ML20050C819 (100)
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{{#Wiki_filter:_. I I I MAINE YANKEE ATOMIC POWER COMPANY ANNUAL RADIOLOGICAL ENVIRONr! ENTAL MONITORING REPORT I January 1, 1981 - December 31, 1981 I March 1982 I I I I l I l l5 Maine Yankee Atomic Power Company i I Engineering Office i Environmental Engineering Department 1671 Wo rc e s t e r Road Framingham, Massachusetts 01701 I I

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l I I I TN'JJ OF 07D7TTS I Page I. II TITODUCTI Q 1................................................... 1 II. IDCATIG I OF SNIPLI'K; STK'IO"3.................................. 3 III. SlM17dri OF 12NIPa r CCAL ? EASURD CTPS.......................... 24 IV. ! 1I IR CCf.1 SUINCi................................................ 50 V. QUlsLITY ASSURNJCI: PROGRN 1...................................... 52 VI. Yi DSPI IIRI C FALI OUT............................................ 57 VII. NiAINS IS OF I2 NIROTE TTAL DN"A................................. 79 m N - C,m m _........................................ e2 gu. IX. CO: ;CLUS I O: I.................................................,... 94 X. RITERDJCES..................................................... 95 I l I I I I I I

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M FIGUPTS 1-7.

12 7/ITO MC TTIL SATLU1G IOCTCIOIS........................... 7-13 FIGURES 8-13. 1980 F/11/X7T /CTIVITY G1 A.P. FILTERS...................... 58-63 FIGU E 14-27 1991 FALW TCPIVITY G1 A.P. FIIITPS...................... 64-77 FI'3UFrS 28-31, 1981 FALIDUT ICTIVITY I?1 IOJATIC VP/ITATIa1................ 84-87 l I .I 1g i 'I I I I I I I I

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I l5 LIST OF TABIIS: I Pages

!I TMII 1. TESULTS OF ! !IIT LTX1 Si fRVIN................................ 51 TABII 2. EPA, I!CPA-IABOTWIORY NID PT.TA-IABORA"OTI FISULTS........ 53 TABII 3. AGRE!!CTI' OF WOIO?IUCLIDES I'1 SFDPC 7' SYTLTS............ 55 TABII 4. 1981 AVENCE TLD EXPOSURES................................ 90 4 TABLE 5. 1981 DIRIUP WOIATIO:1 F.L? MWI............................. 91 TABII 6. SL"T VJU OF C NIPO? ? CTTAL RADIATIO'1 D0GES.................. 93 lI I I I I I I I I

I I. INTEODt'CTION This report contains a summary and analysis of the radiological environmental data collected during 1981 by the Environmental Studies Laboratory of the Maine Yankee Atomic Power Company. Direct gamma radiation around the plant evirons is measured with LiF I TLD Chips. Maine Yankee personnel prepare, distribute, measure and calibrate these dosimeters. All the environmental samples were processed by the Nuclear Services Division Environmental Laboratory, located in Westborough, Massachusetts. I Section II of this report contains a list of all sampling stations used in 1981 as well as a tabulation of the media sampled at each station. Figures I 1 through 7 indicate the location of the plant site, its topography and the locations of the sampling stations. Section III sumnarizes the environmental data. A computer program, ERMAP, produces a digest of the 1981 measurements. Each environmental media appears according to the alphabetical order of its media code. At the top of each page, ERMAP lists the units of measurement for each medium. The left hand colunn contains the radionuclide which is being reported, total number of analysis of that radionuclide, and the number of measurements which exceeds I ten times the yearly average background value. The latter are classified as "non-routine" measurements. The next column lists the nominal minimum detectable concentration (MDC) for each radionuclide. Those sampling stations which are adjacent to the plant and which could conceivably be affected by the operation of Maine Yankee are called " indicator" or " Zone I" stations. Distant stations, which are beyond plant I influence are called " Control" or " Zone II" stations. I I l I lI t

I EkMAP calculates a set of statistical parameter for each radionuclide. This set of statistical parameters includes separate analyses for (1) the indicator stations, (2) the control stations, and (3) the station having the highest annual mean concentration. For each of these three groups of data, ERMAP calculates:

1) The mean value of all concentrations including negative values and I

values below !!DL.

2) The square root of the mean square deviation. This is an estimate of the sample variance.

I

3) The lowest and highest calculated concentration.

4) The number of positive measurements (activity which is three tices greater than the standard deviation) divided by the total number of measurements.

Section IV of this report contains the semiannual results of the milk Section V discusses the Quality Assurance program, which includes cow survey. EPA results, and Section VI discusses fallout from a Chinese atmospheric nuclear test. I In the final sections, we analyze the results of our efforts in 1981, calculate environmental radiation doses, and present our conclusions. I I E + lI

I I II. LOCATI'JNS OF SAMPLING STATIONS The following three pages list our sampling locations. Distances are measured from the center of the containment building; directions are relative to true north. The media codes are: AP Air particulate AR Arthropods C Charcoal air filters I FD Farm crops FI Finfish M Milk SF Shellfish SS Sediment VA Marine algae VT Terrestrial vegetation WE Estuary water WC Fresh water I WP Precipitation TC Mixed grasses I i I 8 I I l l I l l I g e. l

I Direct Radiation - TLD Dosimeter Sites Sampling and Analysis Frequency - Monthly I Zone I I Distance (Km) Site Sample Station Locations from Plant Quadrant TL 1 Montsweag Brook 2.7 IN TL 2 Ea ton Fa rm .5 w TL 3 Environmental Studies lab. (Bailey Fare) .6 !;E TL 4 Central Maine Power Company Mason Steam Station 4. '8 !;E TL 5 Edgecomb Firehouse 5.6 E!;E I TL 6 Westport Firehouse 1.8 S TL 7 lbrrison's Trailer 6.4 SW TL 8 Restricted Boundary Site 2.2 I;t;E I TL 9 Res tricted Boundary Site .20 E!;E TL 10 Restricted Boundary Site .18 ESE TL 11 Restricted Boundary Site .32 SSE TL 12 Restricted Boundary Site .29 SSU I TL 13 Restricted Boundary Site .75 WSW TL 14 Restricted Boundary Site .64 WN TL 15 Restricted Boundary Site 1.00 ti!N Zone II I TL 16 Morse Farm 10.0 W TL 17 Dresden Substation 19.8 1;IN I !I

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TID 1.ocat ions O

j III. SLHMARY OF 1981 EP:VIR0hME!;TAL DATA i The following pages summarize the analytical results of all the environmental samples which were collected durinb 1981. These pages were generated by the computer program, ER1AP. I I I I -1/.- I

E E E E E E E E M) E M E E E E E M M matNE vawxtr orpqt1 rev t pow.r g t a s p a n a nt_nr. i t a t wmTva*Y=e wa/ote 9 seer s

89. 46, roo Twr PF#tnn t?)pn/an 17/tt/as KE0!Uwe ato panttCittatr FILTEng UwtT9: pct /CH,

Ca010NUCLt0ES INntr4700 STaftDNS MfGHrer stattnn Con f ect toraftnA9 (20. awalv5ES) NOMtwat

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Eaw,oaNGE,Akn "ran,oawcr,ayn (N04.e0HT!*E).

LLn wn." nrTFrtrn*e S f a,' ko. OrTrrtEn.. %n. op Trr 7F rie. ..e. G2 3 (a76) s.0F.03 ( t.I3 A 1)E.t 11 ( t.1 i 21E .t ( t.4 1 9)F.t ( n) ( 7.3 Eto.6)F.3 ( a.2 sto.01F 3 ( t.?. amy.o)F 3 ef36a/3701* ef $1/ 47)e etted/tes)* CE.7 ( 36) 2.0F.07 ( a.' 3 2 7)F -7 11 ( a.7 i 6)E .7 ( a.1 A 31F 7 ( 0) ( 1.9 - 6.a%F =2 ( 3.5 6.a1E.7 ( 3.0

5. air

.7 et pa/ 2nte .( e/ si. .r at ni. N=a0 ( 36) s.0E.02 ( 3.' 6 & 7)r .4 11 ( 6.a A 1.'6)E.3 ( a.3 1 7.8)r 3 a.o)F.3 (.2.7 14 1)r.3 ( 0) ( 3.6 3 et t/ pale et n/ a)e et 1/ m). CD.91 ( 36) 2.0E*07 (.a.2 & %.A)E a 17 t 2.7 A 2.n)E.* ( h.o a tS. air a 6.5)F 3 8.9)E.3 (.S.6 ( 0) (.7.7 et 0/ Pale et 0/ a)* et n/ ale CN=Se ( 36) 2.0E.03 ( 3. A 1.a)E.a 11 ( 4.5 i s.3)E.a ( 3.A i t,a)r -a In.nir.a 19.a)E.a ( s.g. 10a.01E (.d.1 ( 0) (.0.1 = et 6/ 24)* et 1/ a). et p/ m). CO.5A ( 36) 2.0E.03 (.2,3 & t.tjE =% 11 ( t.t A 1.5)E .a (.n.$ g p,nig 5 ( 0) (.5.3 a n)E.a (.3.7 2.0)r.a et of Pn)e et n/ a)e et n/ ate FE.59 ( 36) 3.0E 03 (.6.' 3 A ta.n)E.5 la f 1.5 1 3.01E =a f 2.2 g 71.o}r.5 ( 0) (=t.5 . 1.7)E.3 t.6.3 - to.tir.a et 0/ 24). e( n/ a). e( o/ ele CO to ( 36) 2.0E=03 ( t,1 a 8)E.a 11 t 3.7 i 7)E.a ( t.7 g t.2)F.a ( 0) (=5.a.. 6.0)E.a (.a.o - 7.c)F.a

(

9/ 24)e e( 0/ a)e et of h). ZN.15 ( 36) s.or.n3 (. t.'? g 1.1)F.a 2e ( 3.a i 2.'9)F.a ( 3.2 g 7.5)F.a 1.0)E.3 f.9.6 it 9)r a ( 0) (.t.1

(

0/ 24)* et n/ a)* et 0/ aie l l e knw.R0ttTthE perrp9 in TwE No.aro Or 3FpacaTr "L'asHREwF4TS walCH.Eqr r,utatro asCFCROU Twr e r pf'w t Tirtntwr, 'n Fn4.THE prpion or TwaN TrN (16) *t*EM Twr avrpatr n6 TECTA 4LE *EaavorwrNT9 ce THE FpaCTrow or sa.piF aNatvgFt (f.E. 333tGwa) is TNofCaTrn wifwtN et ie. i l l

m MiNe W..r.M iMr M. 4M o me.iM nN m or. M7/.m M M M MW m m gow.auf Foo Tus DFerre 97'ppn/ma 97/tt/pt K[O!Umg Alp PaDTitutafr rtlTFP9 HNffSe pr1/th. es0!ONticlinE S funIratos etafinNs wi r.wr et stattn s r oN ik ot InfattnNm j (No aNatvSE*) 40"fNat =ta*,pamcF. awn ur aN,os

qr. ap.n
raN,raNns, awn (NON.e0t eT INE l e LLn NO. nFTFrTrn**

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n. DFTrrubee
n.

nrTFrtreen 20 95 ( 36) 1.6F.03 ( 9.7 & t.m)F *3 11 ( t.1 h .' 6 ) r op ( O.3 g 1,0)F 1 Pa2.01E.a (.2.7 Payn,c)r 3ma.a)E .a t.%.m ( 0) (-t.3 et 70/ anje

(

e/ a). et 8/ m), N9 95 ( 14) 1.0E-02 ( 128 1 1)F 7 11 f 2.1 i t.7)F 7 t 1.9 g 7)F -7 %3A.e)F.a 57s.oir =a ( l.% 52a.9)F =e f 7.7 ( 0) (.3.0 = et 71/ Pale et t/ age et 6/ mie l 4G-110"( 36) 7.0F=01 (.7.' 3 a 1.0)E.a 17 (

.5 A R.7)E -a

(.a.7 g 7.1)F =a 7.1)E -4 a.t)F 3 f.a 6 ( n) (.a.M

(

0/ Pale of 6/ a)e of 0/ A)* CU.103 ( 36) 2.0F.01 ( 326 g 7)F 3 17 ( a.3 i 7.3)F 3 ( 3.6 g 1.3)F -1 ag,p)F .a (-2.9 79.9)F =a ( 0) (=a.9 . 46.1)E.a f 3.A of la/ 2m)e e( 7/ eje et a/ Mie austeh ( 36) 7.0E=07 ( 5.[5 a 1.1)E -3 1A ( 7.5 i a.6)E 3 ( 6.6 1 7.7)# -1 709.0)E -a (.m.o - tao.0)F .a ( 0) (-1.5 - 20.01E.3 ( 7.6

(

7/ 72)e

(

1/ a)e e( 2/ m). 1 131 ( 36) 3.0F-01 ( -5.' 6 a 5.5)E.a 17 ( 2.5 A 2.5)F -3 ( 1.6 & 5.7)F -a f 0) (-6.9 . 9.5)F 4 (.2.3 1.9)F -t

(

0/ PA)e et 0/ a1* et n/ m). CS.13a f 36) 7.0F=03 ( 2f7 a .A)E.a la ( 3.1 1 13.2)F 5 (-2.1 1 1.7)E.a l ( n) (.9.3 . 3.7)E .a (.9.7 a,t}F.a

(

0/ 7m)e e( n/ a). .( 0/ M)* l CS.137 ( 36) 7.0E.03 ( tl2 A 7)E.3 1% ( t.h A 7)F 3 ( t.) & .a}F 3 13.rir.a ( 7.2 raa.oir i 33.7)E.a ( i.6 ( n) (.. 5 et 17/ 2A)e e( 7/ a)e of 4/ Mie 1 92 140 ( 36) 5.0F.03 (.7(9 a 3.7)F.a 17 ( o.5 1 3.'3)F.a (.5.0 g 5.n)F.a 1.5)F 3 ( 0) (.a.2 a.9)F 3 (-2.6

(

0/ Pm). et o/ a)e er op m)e l EE-tal ( 36) 3.0F.03 ( t9 a .t)F 3 2n ( 7.5 i 1,2)g.3 ( 2.3 g 7)F 3 ( 0) (.6.5 - ,57.9)F.a ( 5.3 = 53.5)E.a (-l.3 53.5)r.a

(

15/ Pa)* st 7/ 41 of e/ A)* e NON.ROOTINF DfFFDe 70 THE Ntjunrp nr qFpapaTK mF"siOWF*ENTS.wtCH *For GhF4TFD THAN TFN (tot TTwoi THr avFuaGF R aC w qunO6m FnR TwE pr#{nn nr TMF prPnRT

e THF FearignN pr go.pt g aWaqytrS V T F l. n t N r.

F." T E r t 'aut F ar A 9 Horas NTS (1.F. >331Gua) To INnfCairn utfugn og ie.._

w Y R$ dVI NT n! Ca( N fn M Opt % patE 7 O O E Su==au, rop Twr pretno sapps/sc sp/ttras ME0!uwe afo papfrentair rtLTrne H4773: Pet /co. a RADIONUtlfDES f%nicatno Staffube HIGwF97 statin % cnNTwi. LocatinNg (NO. aN at v.*E S) Nn*fNaL "t a r.c a ncr. awn aran,oa%cr,akn .s a s,i a

Gs, a a

( NON.00it T!*E l e LLn htt." DFTEr?rnee $7al No. PrTrrTED

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es TrrTFr.. CE.tas ( 16) 7.nr.07 ( t,a g .tir.7 to ( t.s i .o)E 2 r t.e t . sis 7 a05.'o1E.a t t.0 ( n) ( t.o. aos 9)F 4 ( t% 19.pir 3 et Pt/ page .( g/ a). .( e/ mi. TM-228 ( 36) 0.cF.01 f. 7.' a a it.a)F 5 1A r4mi 3.o1E.a ( t.5 t 7.tir .a ( 0) ( 7.5 1.%)E 1 (.7.8 it.r'er .a et d# pa%e

(

o/ a). .t 0/ m). e Now.ROUTINF RrrrRS TO Tur NuppEp or SFpap ATE "F a MilbrwENTS mHICH >ERE GRFATFD TwaN TEN (to) Tf=rs Twr avraaGr natuconUNn Foo Tur DFoton or THE #r'nRT ee TwE PaaCTinN OF Sawptr aNatVSES virLntNm nETECTaBLE MEaSuor"ENTS (f.E. >3STGwa) TS INDTCatrn wifw!N et )e. l l

N{ NF( reF F r% 4.F

an GIC IN t r-

/ot 8 t?/)t/h1 Sn..aWV 81 W Twr pF9tnn 92#7n/en ONtiS pC 1/a r. 5gi KEDIUwt sofwooppes a&O10NUttinEs f%nIcafno =Taffn=9 w i r.w t 9 7 STatton co% tens i nc e i t o. s (NO, aNALV9E1) NOMINat wfaN,waNCF,a%n

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.r a N,u ancs, a %n (sou..ourrNrle (to =o; n5Trrirnae s ' a,'

o. ncirefan.e sn. r.s tre tr oe.

BE.7 ( 21) 7 ( a.2 1 1.04F 1 19 f a.t i 5.a1E 1 ( 3.d 1 5.915 t (.t.5 7.ajr 3 ( n) (.7.5 14.t1E t

(

0/ ta). et of a). et 0/ 7)e 4 40 ( 21) 5 ( t.'s a 9)E 3 11 ( t.5 i 31E 3 ( t.5 1 3)F 3 2n.5)E F ( 6.a. 25.7)r 7 ( of I %.2 ,28.A1E 2 f %.7 of to/ 13)e e( 9/ E)*

(

6/ 71* CD*51 ( 21) 3.2E*07 ( R$3 A 70.n)F 0 13 ( t.o A 1.51E 7 ( 3.3 &

.')r 1

( n) (.3.2 6.tik 2 (.3.2 - e.3)r 7 of 0/ to)*

(

6/ 9)e of n/ 71* EN.Sa ( 21) 7.or=n7 ( #d? a 27.a)F 1 2a ( a.9 1 2.a)E a ( a.9 g 7.o1F n (.5.n. 17.M), n 1.A)F 1 f n) (*t.6 of 0/ to)e et 0/ 7)* of n/ 71* C0=54 ( 21) 2.0F=e3 ( 2.'O g a.t)E o 17 ( a.o i 5.' o i E 6 (.T.* 1 7.ayr e 3), i ( 0) (.7.0 a.1)E 1 (.t.8 ef 0/ to)e

(

0/ %)* ef 9/ 71* FE=59 ( 21) 3.orent ( 1.5 g 7.5)E o it ( 7.7 i 1.3)F 1 ( t.5 g 1.03r 3 ~ (.9.7 t,n), t ( 0) (.3.2 7.9)F t of 0/ laje et 0/ 5)* ef n/ 7)e Cn.to ( 21) 2.or.o? (.7do a a.t)F n 17 ( t.% a A.6)F 0 (.2.9 a 1.5)r n 6)F t (.t.9 f.o)E t ( 61 (.3.1 of O/ taie

(

4/ %)* ef O/ 71* ZN 45 ( 21) 6.7F*01 ( 6d0 g 9.7)E O 11 ( t.% i 1.01E t ( 6.5 i A.%tr o 3,A)r i (.t.q e.5)F t f 0) (.2.7 et 0/ to)e et n/ a). er n/ 71 22 45 ( 21) a.eF.07 ( 3.[ t A A.7)F 0 17 ( t.a A

1. ole t

( 2.7 g 9.I)F 0 1.715 1 ( 2.1 ( 0) (.a.1 4.A)E 1 of 0/ to)*

(

n/ 5)* e( 4/ 7)* NON.ROQtIN[ PFFFRe TO TN( 6'UwR[A PF $FP4RaTF "FeSUPFMrNTS 4HICH hrDF GkraTED TwaN TF N (101 7tMES Twr avruaGF patwGunuNn FnR THE PFWIUn nr THF eFPodt to TMF FGaCTigg nr gaup(F ANag ytrq yfE(ntyr. prTECTantE Prasuor=Ents (for. >1stGwa) 19 twnftaTro *TTutN et 1*. 5-

m W W W W m W W W m m m m M M M N m a walNE VaheFL 'iFF 9 f f r FNv f D' p<ME NT ae R a n 1.itnG T c o.. *ns f inw i m G m2/atito, paGF o 90=*ewy Foo ter Ptwino t?fpn/so 17/ttent KEDIUmg aRTMR00003 "=ITS: #C1/mG >ET CAOIONuttinES INnicaTOR 9faTION9 HIGwE9T Statins C091wnt ora f tfwm (RO. aNatvmFS) a0mfNaL "EaN,waNGF,aho wraw.wsNGF,ahn .Saw,onocF,aNr (NOx.000 TINE)* LLn mn.' orTFrTFn** 374l NO. rFTFCTEnee NO. OFIFrTEo** N8 45 ( 21) 3.9F*01 ( 4.2 a 5.1)E n 24 ( m.6 i 5.31F 0 ( O.e g 5,3)6 o ( 0) (.l.7 = %.8)E I ( #.1 31.3)F 0 of 0/ tale e( 0/ 7)e et 9/ 71 AG.110"( 21) 2.5F*07 ( 7[9 & P.9)F 1 17 ( 5.A A 2.7)E 1 ( 2." A 2.3)F t ( 0) (.t 9 I. elf 2 (.t.o 1.7)F 2 et 0/ tale et n/ %). et (/ 7). GU.103 ( 21) 2.0E.07 ( 126 A a.1)E o 2e f 1.1 i 6)E 1 ( t.t t 6)F 1 ( 0) ( 3.e. 7.N1E i (.t.3 a.t)F 1 et o/ ta). et n/ 7)e et n/ 7). 90-106 ( 21) .2 (. 3.' ) 1 20.7)E o 17 ( t.7 i 4.5)E t (.2.a a 2.6)F 1 ( 0) (.1.3 1.3)E 2 (.t.5 6)F 7 of 0/ tale

(

0/ %)e e( w/ 7)e I.139 ( 2t) n. (.6 ea 17.9)E t 17 ( 2.7 a 2.5)r 7 f.2.N A 9.0)F t g ( 0) (.t.1 1.2)E 3 (.3.2 a,5)F 2

(

0/ tale et 0/ %)* et n/ 7)e ~ CS.133 ( 21) 2.0E=0? (.e.6 a 1.n)E O 11 ( t.% i 1.2)F 0 (.5.0 g 3.7)F o ( 01 (.2.6 . 1.31E 1 ( t.0 715 I et 0/ ta). et n/ a). .( n/ 7). CS.137 ( 21) 2.0E.op ( a.' a a 2%.t)E .1 11 f 2.1 i %.6)E O ( l.4 1 3.8)F n ( 0) (.t.3 - s ?)E 1 (**** 7n.2)E o of 0/ tale e( 0/ 5)e et 9/ 7)e ca.tc0 ( 21) 8.0E.07 (.7 7 A 39.9)F 0 17 f 3.9 i 5.6)F t (-5.3 & 15.115 o g ( 0) (.3.5 2.5)E 2 (.4.N a.9)F t of 0/ tale et op %). et 9/ 7)e CE.141 ( 21) s.0E.07 (.t;5 g m.a)E o de ( t.o i 1.1)E 1 ( l.9 a 1.115 t ( 0) (.7.'n. a.a)E 1 (-2.o. n,%)F

(

0/ tale

(

4/ 7)* et n/ 7). CE=lce ( 21) .2 ( %d* A ta.7)F o 11 ( 3.41 3.P)E t ( l.3 & t.m)F 1 ( 0) (=%.4 ta.9)F t (.e.1 p,ngr et u/ to)e et n/ %)e et n/ 7)e e NON.uo6J T I N E nFFrkg TO THE NuauFu 0F SF"aMaTF -reShpF"ENis =HICH *ERF r,pFaTFW TaaN TF N (to) Yt F% Twr avFWaGF h a C u f.k ht'N D Fnd Twt PECI'in HF THE WFPlHT ee TMF FRACTION nF Ss*ptr aNa t v%r s viri n!Nr. nt TEr f a kt F "r & 5 00 F "E '4 I 9 (i.E. 3331Gral T9 INuiC 4 TFD >T(wir

(

1e. m a m W W m W W W m M M M M M M W W m me!NE VawsFr oFF gg ff.=vfoom.f M T a t. Dan!ntnGTCat an=TT0=f%G a7/93/tu. 9*.8 to Sve.aRv sow far SEk!OD 12}<n/av gp/tt/pt EDIUmg asfaeDannS U=tTS prt/aG *ET ADIONUCLinEs INnicaToo ifaTIn%S "tGaEgt staffo= Cu% f orst LocaTIost KO. ANALYSES) %DWINAL "Eah,saNGE.a%0

fan,ea*CF,ahD

. FAN,Ra%GE,a%D RON.anuTINEle LLp =0! nFTECT50*e STa] wo. OFTFCTFnee NO. nFTFCfruee M.224 ( 21) 7.cE=07 ( 7.'s a 1.7)E I 17 ( l.t i 1.81E 1 (.l.3 a 9)F 1 ( 0) (.4l1 14.11E 1 f.3.9 2.8)F 1 of 0# 1 ele

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0/ T1e ~ ' e NON.80uTINE REFFRS TO THE ho"aER OF SFPakaff "Fa94RE=FNTS==TCH eFWF GeFaTER TwaN TEN (101 fires TwF avresGE matar.onUND Fn# THE PFd!On nF THE GEppet se THE FRACTION OF Sample aNatV$FS YTELDING DETECTiNIE *FaquoEwtNTS (1.E. 11 Sic =al IS INDICATFD =ITw!N et le. W M M W M M M M M m em a eam wa!NL YawwFE 055MTTF F Nvicf n =FNT at GADintnGTCat

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,pfogfgg, waGF 11 Soa.a>v roe Twr pskinn 17}7a/no 37/tt/>t DEDIUwe twascoat FtLTEoS n%ff8: *Ct/cu, a pa010NucL10ES 1NDItaine 9fatiott HIGME=T statinN C US T = ot 10Caftn%s (NO. aNALVSES) Nn=Imal

F a %, m a w r.E. amn
EaN,Wa%Gr ahn

= fan,4aAGE,ain (NON.pnuTINEle LLn =0.' nFTErTrnee Sta] No. OrTrrTFne. str. nFTFCTED. i, l 3.2)r.3 ( 3.5 g a.oir.a I.131 (864) 3.eE.03 ( 1.1 a .%)F 3 13 ( P.o a ~ 7.A)E

7

(=2.7 3.1)F =? i ( 0) (.7.7

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c/16a)e e( 0/ 57)* et n/ted). e NON.RouTIhE RFFFRS TO THE Nt!"aED OF SEpakaTE *EasupF"FhT5 wwtCH >EkF GwEaTER TMAN TFN (10) Ytwr3 TMF avFeaGr maCggeOUND FrR THE PEelun or THE wsPnWY l ee THE FeaCTION OF SawplE amatvsFS V f ELnf Nr. DE TECTaet E >F a suar*ENTS (f.E. >3SIGwa) IS INDftaTFD affw!N et )e. l.

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t. t.

t. l.

t. l 0W N 7 l f ( ( t t ( - f R 9 e c ( t p ( a ( e ( ( e ( ( a ( ( * ( e ( e ( e (( o E t T / a 3 Ef 0 S Re / T Go 7 T o 33 t o o O O o 1 P n N 't FF N E EE E E E E E E E RW nO*. ) ) ) ) ) ) ) ) ) ) F t 6 >E o.

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t

= t T FT F n I ( ( F u (( * ( ( * ( ( e (( e ( ( e (( e (( * (( e (( e O LO TSPN OS F" I 9* a s WT m9 en 2 7 7 1 7 1 7 FT T 0 F F 0 0 R L 0 0 0 0' + F1 Ol C a e = = E wO. E E E E E E E R0 a 1 Nu 7 5 2 0 0 0 0 7 0 F N fL. E( uG s E uL. N D n 3 2 2 3 2 6 s N f I INT S a R N TEC3 v A UTa > G ) e O W / SSl R. N F E D EEI ) ) )) 3) )) )) )) 1) )) )) E. a N U 0SN. 30 40 30 30 30 30 30 30 10 NwE i C 1VI. OTHf a F LLT. m CA 0. ( ( (( ( ( (( ( ( (( (( (( (( N T( g UN0 8 p NA 1 a 8 9 0 5 5 e U O e 7 5 S. 5 5 6 6 9 0 I I .4 D DO0. s E A NN E = R N D E O N R M R(( B W C M C F C 2 Z I lf rlll (

E O O O O E O M 'M M M g u! B g wal=E vahuFE tir F 9( Ts F Nvi c nNmF est a t d anIntnr.1C at won T Tow f a% ap/P3sto, p a s.* 13 12'?P/80 12/31/m1 So=*awv Fhe TwF PERgp3 / = KEDIuwe FOOD /GASDEN C8nPS HNITS: PC t /e G *ET CaDIONUCLinES thr!rafoo MTaTTONS MTG*Ett STaTTON r u= T e nt taraT10Ne th0. Akatv9Es) NnWTNAL MEAN.GaNGF ann PEAN,maNGF.aND .Ea%,RawGF,4ND e (Nom. ROUTINE!* LLO NO.' DETErTFnee MTal 5.0, rr TEC TF D*

No. nFTFCTE0**

I R8=45 ( 31 3.*E*01 ( t.o a 1.1)F G 17 ( 1,0 A 3.01E o (.o.e & ?.0)E o 6.0)F n 4.7)E O (=6.6 ( 0) (.t.4

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0/ ?)*

f J/

1)* GU.103 ( 31 2.0E.02 (. a,'6 g 3.1)E O 23 ( t.a i 8)E I ( 1.4 & 8)F 1 0.n)t 0 ( 0)

- ,7 n/ 21e e(

e/ 11 =( 0/ 1)* RU.106 ( 3) 2 '*r, 51E 1 23 (.7.7 1 52.71F 0 (.7.7 1 57.71F 0 ( 0) 0.01E 1 f.7.T 0.01E p e* Je et 0/ 1)e et 0/ 11e 1 131 ( 3) n. ( t.' O a 1.1)E t 17 ( t.0 i 1.' t ) E ( 9.0 g Pt.7)F. ( 0) (.t.!. 21.1]E O

(

0/ 2)e et 0/ 2)e

(

0/ 11e CS.134 ( 31 2.nE.07 t.lf2 g a.71E O !? (.t.2 i s.2)E O (.t.2 a 5.6)E O ( 0) (=5.a - 3.1)E O (.t.2 = 0.0)E o

(

0/ 2)e et 0/ ?)e

(

0/ 1)* C8 137 ( 1) 2.cE.07 ( 5 '9 A in.o)E .1 21 ( 3.7 A %.6)E o ( 3.7 & 5.6)E O .te.m)E.1 ( 0) (.5.1 et 0/ 21e et C/ t)e of U/ t)e 04.la0 ( 3) A.0E.07 (.5f6 1 3n.a)E O 17 (.5.6 A 30.a)E o ( 2.3 & 7.7)F t 7.9)E 1 f.d.3 - 0.0!F t ( 01 (.3.6

(

0/ 21e

(

0/ 2)e et 0/ 11e CE.141 ( 3) s.0E.02 (-6.'s a on.7)E.1 23 ( t.1 i tc.7)E C ( t.1 & 10.7)E o ( 0) (.t 'O 9)E 1 et of 21e et n/ 1)*

(

0/ lie CE.tes ( 31 2 ( pfe a 21.a)E o 12 ( 2.9 A 23.6)E n (.3.e & 2.7)F 1 7.6)F 1 (.3.a. 0.0)E t ( 0) (.P.1 e( 0/ 21e

(

0/ ?)e et 0/ 11e e NOh.400 TINE RFFFRS 70 THE NHanFo nF SEPakaTE "F'a504FwENTS mw1CH aFwF GWEaTFw TnaN TFN (10) T!=rs TwF avFRaGF Hater.pnuNr Fna THE PFw!On OF THE RFPnWT se Tet F e aC T 10k OF MauPLF ANat Y SF9 YTFin!*'C nsTERTa"lF "EASUWEMFNTS (1.E. >3STGwai is INDICaTFD.!TwtN *( 1e..

M M M M M M M M M M W W W m c nIntnGTCat ko~f fiNioG a7 /6 3 / t o. paGF 14 ma!NE VawaFE firF$t tr FNviso =FNTat. a ~ 17/11/81 5 41p p a e' v Fnk Tmr 96Winn 17/70/2p = KED!uNs FOOD / GARDEN Canpg tiNITS: ce l /, G =ET 940!nquCL10ES INntrafno RT&TIONS HIGMF97 Statins FONTwnt LocatinN5 (40, aNatYSES) Nomfwat

- N,naNrF.4ND
FAN,oahGF, ann afaN,paNGF,aND (NON.a0UTINE)*

LLn m m.' DEffrTrna. S T a,' No. DFTFCTEDe* NO. PETFCTEDa* TH.220 ( 33 2.0F.07 ( 7,' O a 1.n)F t 17 ( 2,n a 1.01E 1 f.9.9 1 27.11F n ( 0) ( t.a = 1.1)F 3 (.9 w 6,0)F n et er 2). e( o/ 21e et o/ 11e NON.RouTIN[ R(7FNS Tal Twt NuwnEn nF 9FpaWATF "E s SitRF*rNT S.HICH =FbF GkEaTF R THaN TEN (10) T!=r9 Twp aVEGaGr RACNGROUNn F0W TMF PE R ICn F fHE WrPOET e* f*E FRACTION OF 9 aupt r a Nat.v 3F S VIELnING OFTErfidLE MFASUDEMENTS (f.E. 33SIG"a) TS INOTC A TFD a!Tw!N *( )e, I bc -2M.-

E N E N N E E E M E E E g ma!=F Ta*8FF OFFgifr FwvfbawaFNTat WanIntnGTCat *0stThWT%c A7/03/to, o n ws 1% 17/11/Af Suww&wv FDo Twr DFbteD 12p/n/4U EEDIUml FIsd 1WilS pr t /s G -Et DADIONUCLIDES InnTrafob gTaffoN5 w!Gwt e ? STATION C os t wit Loratin%S (ho, akatvsE3) %n=14at

Eas,paNCF.sho

" FAN,caNGF.shn "Ea%,sawGs,sso (h0h #0uTIME). ILo u d." nFTFrTFD** 574] No. orTFCTEn=e ' o. nFTFCTFree CE.7 f 2) 7 ( 9.3 A 7.m)F 1 It ( o.3 i f.e1E 1 (.5.T & 9.AIF l ( 0) (.5.2 p.n)F l et 0/ lie

(

n/ l)* et 0/ lie n.a0 ( Pi .5 ( 2.4 .PiF 3 25 t 3.0 2 . siE i < 3.o a .siF 3 ( 0) of 1/ 11e et 1/ 11e et 1/ lie C#=51 ( 23 3.2E+07 ( 2.' 8 A 18.7)E I 23 f 6.0 1 15.'11 E I ( o. e* g 15.1)E I ( v) el 0/ 11e

(

A/ 1)e ef 0/ lie nn 54 ( 23 2.0E.07 ( 121 a .m1E 1 11 f 1.1 i .A)E t ( l.P & P.a)E O ( 0)

(

0/ 1)= et 0/ l)*

(

0/ 1)* 1 CO.5s ( 23 2.or.02 ( I;l a lo.siF a 25 ( l.e i i.iiE i ( t.= A t.1)E I ( 0) of 0/ lie

(

e/ lie of O/ lie FE.59 ( 73 3.0E+0! ( l.' 9 a 2.0)F t 11 ( t.n A 2.01E 1 (.l.3 & 7.8)E 1 ( 0) (.l.3 p.01F 1 et 0/ l)e

(

0/ 13e of o/ 11* CO.40 ( ?) 7.aF.07 ( 4.6 a 11.2)t 0 11 ( 4.6 1 13.2)E o (.3.3 A 11.A)E o ( 0) (.3.3 0.0)F 0 et 0/ lie e( A/ 1)e et 0/ 11e 22 25 ( 7) A.7Ee01 ( 7.A & In.7)E o 11 ( 7.8 1 te.21E n (.a.0 a 22.5)F 0 ( 0) f*8.o - c.01E O et U/ lie of O/ lie

(

0/ 11e 22 45 ( ?) s.nE.02 ( 127 a 1.01E I 11 ( l.7 A l.9)E 1 (.4.7 & 7.3)F 1 ( 0) (.4.7 0.01F 1 e( u/ l)*

(

0/ lie of 0/ lie e =0%.000 TINE REFFW9 TO TwF nowaEn OF SEPawaTF wFa3HwFwENTS wwltw mFWF GWFATFW TwaN TEN flo) Tg=ES TwF syresGF RACuCROUND FHW TwF PEWlHn OF TwF Q F Pr-w t ee TwE FW4CTT7% OF qa.ptF ANatfars vlEtninG nrTFCTs4LE wEasuoFwENT9 (f.F. >3316=6) TS I%ot t a TF D.tTwtw et )*,. i

g g g E E nn 7 1 1 1 1 I 1 o 1 t O t sn one. FE E EF r? E E E EE E F e f h e. ) ) ) ) ) ) ) ) ) ) ) ) ) )

m. n.

8 7 n. 7, 9 6 M. 2 7 9 80 f s0. t a ,E tFT no l n 70 P S 7n 4 4 EF 0GC. i e e e 2 e e 2 e T tNE ) ) 1 1 1 1 ) ) ) 1 G E aT t 1 1 1 1 1 1 1 1 1 tD O. g. g. a A n,F a a G wh / / / / / / / / / / p o 0 U 0 0 0

n. n. 0 2

8. n. U 4 4. n 4

3 0 4 4. V 2 3 N9 a t a. / NEO 9 1 4 t 5

t. t.

2. d.

t. l.

1 O"N 33 l ( t t ( t ( t ( u C C t ( 1 ( ( e ( ( ( * ( ( e ( e ( a ( e f ( * ( e ( F t / a 3 t F T 9 S WR Ep/ GO f i 0 2 t 1 1 t 1 1 o t P a N = FF l' N F E E E E E E F E E RW 1 09 *. ) I ) i 1 1 ) 1 1 ) F wF 3 P. 1 o. P. 9 0 7 5 H9 o 1 > *. N C. l / T aD. t 1 a .F 9 7 A 4 2 4 4 NTT f 1 T FT e 9 e 7 e e e 2 e C N 6 p / SGC ) 1 ) 3 ) ) ) ) ) ) !F F wH= 2 n7

a F.

1 1 t 1 t 1 1 1 1 1 a E r a i i i 1 A i 1 1 1 SG f 1 T a1. / / / / / / / / / / SHU D. n f t o n 0 0 0 0 n 1 n 0 0 TTS E 0. HN.. 2 9 8 4 3 2 2 3 NW a G a IFO e t 9 8 9 l t 3 1 9 FFF t9 H" N t t ( ( ( ( ( ( t t HP " a 8 ( e ( e ( e ( e ( ( e ( ( ( e ( e F RFt t/ W t in tsT n G2 a a n/ ] EU T 4 1 MOC t7 a e1 f 1 3 1 1 3 3 t t l S 1 2 1 1 2 2 i i 2 2 FE. F T

n TpF) a aN O k

kU D anG t 1 11 t t 11 OO pun .n tat s o 1 FGI 1 Swn( t o t P 1 b

E E

E E E EE E E FE EE CL* NF 0D* T aD. 1 i ) ) 1 )) ) ) ) ) 1 1 F a F 00 OpIP 1 n. 1 6 9

8. n.

9 0

a. n.

VI %F a .F 0 Y SCC. 9 7 7 m 4 n 2 1 c nn pF H 0m tET NE. e 9 o e e e e e e 9 e FGST ve p aT. 1 ) i 1 1 i ) ) 1 ) A a Ft %o n k. n INae a t. 1 1 t 1 1 l 1 1 1 t rf i A a A A A. 1 1. A. NvLn f F r / s / / / / / / / / a aF aN 0 0 3 F FT F v r s' 0 0 9 0 110 "2 1 '.30 7 7. n 9 f w t E0 t 0 4 O HrA a 2 ' g ~ 1 3 ? 99 T w c i3 n"%. t.t. 2 S= = 6 3 9 A 1 t t t = f

t T Fi F

f t t t t ( F u ( e ( e ( e ( e ( (( e ( e ( e (( o (( e O ln tsp N OS F mI 9 = a wT S9 1 7 7 2 2 ? 7 FT T F F 0 0 0 0 0 F) Ol L 0 0 = Po a a E Np. E E f E E E E t Nu 9 9 n. 2 0 0 0 0 7 E( OG F fL N n 3 2 2 6 2 2 8 4 h II E aL INTS a N TEC3 v uT 4 > ) e n W .NF SSl p E M FFE )) )) 1 ) )) )) 3) 3) 1) 13 )) E. a S din. ?0 20 20 ?0 20 20 20 20 20 20 NME I IvI. OT Hf (( t ( ( ( ( ( (( (( (( ( ( ( ( ( ( N T( a F LtT. tau. w uN0 M N a8. 0 3 6 4 7 C t 4 m "u O 5 1 0 0 1 3 3 4 e 4 e e I .4 9 1 1 l 3 1 1 1 l 1 = = = = 0 D00. = = = 1 S 8 4 E E E ahN B G 'J U M R((. N a 4 R 1 C C 8 C C l

pa!NE VANurf 8'rr s t f F F% vious.Feif ti R a nIritng tC at anaf f ow t NG 9p/03/30, 9465 17 Sila w a w y Foo Twr PF 4 : 01: 12}/n/a0 tp/3t/pt EEDIUM: 8 ISM " offs PC1/*G =ET RADIONUCLIDES INhicaT00 9taTIONS "IGdtmf s t a T 3 n*. PUNThrit l iicaignNs (NO. ANatVSES) N0=fNaL

EaN,waNCF,aND
E a w, d a %GE, a * "

PFAN,WANGE, awn (NON 80uTINEle Lth N O.' DFTErTFne. Stal No. orTFCTEn.. No, nFTFCTEDee TH.228 ( 71 7.0E.07 (.2[7 A 3.9)F 1 21 f 3.6 i 3.5)E 1 ( 3.0 1 3.515 1 ( ol (.2.7 o.n)F 1 et 0/ 11e et n/ t). of 0/ lie I e NON.MOUTINE RFFFRS Til THE NUdprd DF SFPaWATF wFaSURFMENTS mw1CH mFor GREaTFW THaN TFN (101 TI"ES THF avEpaGF m4CKGROUNn FnW THE PFWinn DF THE WrpnWT ee THE FpaCT10N OF Sa"#LF ANAL 79FS vfFLOINC DETECTadtE MEASuoFMENTS (1.E. 33SIG"a) T9 INDTCATED affwtw *( )*. . g i I

E O E E E se v E FFs FNvl 8 4T anli Cat TTO 3/1 pa la Su"Mapw FHW TM5 RFW10" 12 }/ n / m 's 12/11/kl H%fTS: pel/LITFw MEDIU5s "ILW D&DIONUCLIDES INnicaine MTaffnNS alG=EST Sfa' Inn CONTant tnCaftn%S (40, aNat v3F S) NOMINAL aEaw,WawGE.skn wFaw,paNGF,aNo

fan,pawsF,a%n (NON.C00TINEle LLD

= 0.* DETFCTFnee STA[ hn. DFTFCTEnee NO. n F I F C T E tim e ( 2.) a. ( i;s' a .=)r o is e i.s a .siF n e 7.o a ..oir.i 2.7)F n ( 0) (.t.7 50.%)F -l f l.7 - %0.5)E 1 (.t.o et at 12)e et at 12)e et 3/ 12)* S3 90 ( 2a) .m ( t.a g 9)F 1 14 ( ta1 11E 1 ( 5.8 & 8)' O ( 0) ( 9.' 8 2P.n)E o 9.7)F 0 ( 9.6 20.01E o ( 2.1

( 12/ 121e et 12/ 12)e et 12/ 121e BE.7

( 2a) s.0Ee01 ( 1.7 g 13 m)F 1 16 ( t.7 1 13.8)F 3 ( u.1 g 1,%)F 0 ( 0) (.9.3 8.5)F 0 (.l.3 2)E t et 0/ 121e e( 0/ 121e et 0/ 12)* c.40 ( 2a) 2.0 gen? ( t.'s g .n)E 3 14 ( t.. i 01E 3 ( t.4 A 01F 3 ( 0) ( f.2 1.A)F 3 ( t.2 1.61E 3 ( t.3 1.5tE 3 et 12 / 121 e et 12/ 12)* et 12/ 12)* CE.51 ( 2a) .t.0 10n (.4.5 g 1.9)E o 2. (-1.8 i 1.91E o (.l.6 & t.9)E O 9)F 1 (.l.4 ( 0) (. t.' A 1.2)F 1 et 0/ 121e

(

0/ 12)e e( 0/ 121e N#=5s ( 2a) 8 (. f2 a 3n.h)E.2 2a ( t.g A 2.a)E.1 ( t.9 & 2.a}E.t (.t.3 t.e)F 0 ( 0) (.t.7 1.1)E O et G/ 12)e

(

0/ 12)e of 0/ 121e CD=58 ( Pa) s' ( 9;7 g 2 7. e ) F. 2 2a ( a.0 1 3.e)E.1 ( 4.0 1 3.01F 1 (.l.3 - 2.5)E o ( 0) (=1.2 2.01E o

(

0/ 12ie

(

0/ 12)e et 0/ 12)* FE=50 ( 2a) 1.0E+01 ( t.5 a 6.7)F 1 16 ( t.5 1 6.7)E 1 ( 9.2 1 52.01E.2 ~ 3.2)E o ( 01 (.a.5 3.m)E o (.S.5

(

0/ 121e et 0/ 12)e et 0/ 121e CO.60 f 2a1 8* (.t(t a a,5)F .I 2a ( 3.6 1 29.'21E.2 ( 5.6 A 29.2)F 2 1.61F n (.t.h = 1.0)F 0 ( 0) s.t.9

(

0/ 121e

(

0/ 121e et U/ tdie e NON. ROUTINE nFFFRS Tit THE NUMRFR nF $(PaNaTF "EsouwfMFNTS *MICH *EWF GeraTER TwaN TEN (to) TImF S Twr a vr u a r,s naCuconuNn FnQ TwF PgW!On nF TME RFPnwf to THE FRACTTON OF SA"PLF a N AL YSF 5 vffLn1Nr. OFTECTahtE MFASuet"ENTS (I.E. > 3 81 r.u a l 13 TwuttaTFn a!Tulu *( 1e. -

M M M M M M M M M M M M M M M M e m' "a!NE faksFE OFF9 fir Fwv 3 pow r%7 st samlnLnnfCat momTtowfNC a7/c3/le. pour 19 Sb==&Hy FOD Tur PEGina 1/p/n/20 17/11/pt EEDIUde a!La us(TS pC I /L I T F d caDIOMUCLIDES 1%ntraine eTafinN9

Ib=EST Stat!nN tus Tant t ot a f f n=S (NO. ANaLVSES) %0*iNAL
Es%,ha%ct,amo

-ra%,oamcF,a*D 'Fah,easGF,a%n (40%.anUTI% Ele LLD %O[ nFTErTFD** Sta] No. OrTFCTEDee

o.

DFTFCTehee Z4-05 t 24) .l.0=100 ( 72v A C.01E.I 16 ( 2.9 a 5.81E -l (-2.5 g 7.e)F -l ( 01 (-7.7 = 1.9)F 0 (-3.3 - 5.0)F 0 of 0/ 121e et 0/ 121e of 6/ 121e 2".45 ( 2a) 3.ote01 ( 8.' 1 g %.7)E .I th ( m31 5.2)E -1 (-5.e A 2.5)F

t 3.s)E o

(-2.5 - 5)E o ( 0) (-1.9 et 0/ 12)e et 0/ 17)e of v/ 121e EB 45 ( 24) al.0 109 f.3f3 a 29.916 =2 16 (=1.3 1 25.1)E ~2 (-2.7 s 2.1)E -1 1.3)F o 1.636 0 (.l.4 ( 0) (=1.1 =

(

o/ 121e et 0/ IP)* et u/ leie SG=l10Mt 28) .l.a.100 f=9E5 A la.p)E.t 2e ( t.6 1 1.8)E O ( t.6 & t.8)E o .A)E t ( 0) (.e.7 = lt.41E O (=1.1 of 0/ 121e et 0/ 12)* et 0/ Idle 0U=103 ( 24) 8 (=l.0 g 1)E o 24 (=6.3 1 1.4)E *1 (-6.3 1

3. ale =l

( 0) (=1.8 o.0)E O (-3.T 1.01F 1 et 0/ 12).

(

o/ 121e et 0/ 12)* E0 106 ( 24) R.0E*01 ( 3E6 1 22.e)E.I 16 ( 3.6 a 22.a)E =1 (-2.9 a 1.9)E o 1.21F l (=l.2 = 91E 1 ( 0) (=l.7 t of O/ 12)e

(

0/ 12)e et 0/ 12)e l l ! 131 ( 24) .5 ( 7f2 a 1.8)F -3 lb ( 7.2 1 3.81E -3 (-1.6 A 3.6)F -1 l t 0) (=2.4 - 2.0)E 2 (=2.5 1.3)F 2

(

0/ 12)e

(

0/ 121e et 0/ 12). CSal34 ( 2a) 9 (.3.7 g 1.71E -l 16 (=3.7 i 1.'7)E -1 (=o.3 a 1.6)F -I i ( 0) (.t.3 9)E o (=l.e. 1)E O et 0/ 12)e e( 0/ 12)* et 0/ 121e CS=l37 ( 24) 9.' ( llA A .2)F l in ( l.8 1 21F 1 ( 7.1 A .T)E o i 76.21E o ( 2.6 fl.9)F e 24.7)E o ( 5.4 l ( 03 ( 5.4 et 12/ 121e et 12/ 12)* e( 11/ 12)* j 04=l40 ( 2a) 1.5E+01 ( = l.' 2 i .a)E o 2a fal.1 a 3.2)E -t (=1.1 & 3.2)F 1 7)F 0 (=2.2 = 2.11F 0 ( 0) ( = 3.'6 = l et 0/ 121e

(

0/ 12)e

(

u/ 121e e =0%= Rout!%E RFFF99 fu THE Nownpw air SFpaeaTE wFi$HWFMENTS mk{CH >Fer GWFaTEW TwaN 1 E *i (to) 7twts Twr avEgant eat.GenuND Fnw TwF prRion nF THF hFPowT en Tut FRaci10w Or 94*ptr aNat V5FS TIFLnINC nE TEC T

4t E "E A SUDF"F NT S (I.F. >3StG"a) TS INoTCatrn.ITwIs

.( ). '

Me!NE TahWFF HFFSTIF S Hy t udN.6 N T al DABIOLnGTCAL MONf7DaihG 87/03/19 PAGF 20 9'44* a R D FOR TMF WFbi9h igp/n/An 17/}1/ht i MEDIU"3 M!La H%fTS: PC1/LTTEd R a D I CNL'CL I DE S t%n! CAT 00 MTatto*9 MfGMF9T Statin 9 CON f wnt LucaT!f%S (NO. awaLTSES) NOw!Nat

Ean,wa%GE.aso

> Fay,oaNGE,a n =Fa.,earnt,aso (t04.kouTINEle LLD un.' OETFCTrp.. Stal No. or TFCTE nes No. OFTFCTEDe* I l CE=let ( 2a) 2.oE*31 (.3'T a 9.tif 1 16 (.3.T a 5.3)E .1 f.5.? i 5.1)E 1 l ( n) (.7.e. 4.7)F o ( 2.5 a.1)F o of 0/ 12)*

(

0/ 17)e et 0/ 12)e lg CE* lee ( 2a) p.0F+01 ( 9(1 A 19.%)F 1 24 ( l.21 1.'3)E o ( 1.2 & 1.3)F 0 T.a)F

Q

(.4,7 it.7)F 0 ( 0) (.A.9 et 0/ 12)*

(

0/ 171*

(

0/ 121e TM.228 ( 24) 1.oE*01 ( a.' l A 4.7)E .1 16 ( 8.1 a 9.2)E.1 (.3.1 A 106.1)F 2 ( 0) (.7.' l %.%)E 0 f.T.0 5.9)F 0

(

0/ 12)*

(

0/ 12)*

(

0/ 121e e NON. ROUTINE REFFRS TO THE NH" rep nF SEPanafE MEASURE"ENTS wMICH >FRE GkFaTER THaN TEN (to) Tint S Tur avFoaGF qaCwGo0UNO Foe TwE PER10n DF THE OFPnpi

- THE FRACTION OF Sa*PLF awatvsFS VTELoTNG OETECTaPLE MEASueE"EhTS (1.E. >3 SIGMA) IS INDIC ATF D w! THIN *(

3e. d,.

!!\\_ g g E O t I 32 t 1 o0 00 01 e1 o1 0t 3 oee. FE FE FE EF rF FE FF EF FF = 1 k e. )) ) ) ) ) ) ) 3 ) ) ) ) ) 1 1 ) ) 93 01 98 9,3 P. 8 81 3

f. 7 7

T an. 27 73 cET 63 h 5A t3 6 5 3 71 P1 a rF. oGC 2* t e l e e e e e e NF. ) l l ) ) l ) l ) T I aT. 4 a e a 4 e a A 4 E s. A. A. g. 1. 1. t h, F a = / / / / / / / / / n o a wN 4, 4. U s 490 52.o 2 3. U Gu T a.. 401 294 320 980 300 O*N o n. t

t. 5. t 72.(

2. t.

9. t.

t2.t NEO. a2 8 / l7 95 ( t I t t P ( ( e ( ( e (( e ( ( e ( ( e ( ( * (( e ( ( e ( f e E t =t C C T A / FT 4 t Rk S Gn T 1 1 3? 1 o o O o o I T P FF N 9 EF EE E E E E E E E W W H F oD*. 1 ) 1 ) ) ) ) ) ) 1 ) h F 1 3 9 7 3 0 8 HS s a f N e. 27 73 HT T 1 F. A3 n 5 4 7 6 0 a, D / f 3 f rT. 2e I e e e e e 1 e C N 3 1 a 6, / SGC. ) ) ) ) ) ) ) ) ) IFF MnW 0P NF. a a a a 3 1 1 1 m F nR 7 9 p F i = i. i 1 i A 1 i i 7 S 7 aT. F,n / / / / / / / / / So0 0 0 0 0 0 0 0 TT9 2 9. e 3 4 3 8 5 3 8 NE a gq'4 wN 401 EFF = Ga,. t t 1 1 T 9 4 a MP> I En o e. ( t. ( ( ( l ( ( ( ( ( f * ( (. ( ( ( e ( ( ( ( F Lo H" N W EF A m H w( C/ ST M o i g WT d '} GP f s l. MoC in. 7 t. 3 3 3 7 3 1 1 1 1 a. F[. S. 2 2 2 1 2 1 1 1 1 r1 F T *

r. O F) t T

n 4 s a 4 o Epg t 3 t1 22 iP 0o no 1 I 0t o1 o1 P uN a ng o t F G{ ai 9 an( Tw b CL* FD ! h *. F F tE rE FE FF EE FF EF EF N F On*. F ar 7sD. ) ) ) ) g l ) 1 1 ) ) ) )) ) ) ) ) OPf "

7. t a, a.

?. a.

a. 9

n. t A. 7 m

40 18 yf Eiw 6 8 .F 75 pT 9 Gr. 7e 9 s 3t 29 1 a 2 S3 D F H r 7 ET. NE. t e f e e e e e e EG3f oat. 1 ) 1 i ) ) .) ) ) p aFf F. 5 5 5 s 5 5 4 5 5

og a Ew OF y r o, O o

ar a. i. A. A. a. A. g. 1. N vg o T F r / s / / / / / / t a a r ET f Ni 6 a. e 1 40 590

50 C a.[O

[o60 F y ?. 2 0 39.o '790 H t A a 46e [ 2 f d w T n C 3 1 3 5. ( 15 ?. t. 7 t. 4 t. i F, f a n=W. P3 T 9 d s 13 oa t t f t t F u ( ( * (( e ( ( * (( * ( ( e (( e ( ( o ( ( e ( ( e O I O ( F = t ( ( T3P N sd I _ EOS 9d a h iq9 7 FT 1 7 7 7 1 7 1 F F 0 0 0 0 0 F1 O) t 0 0 + R0 a a = NO. E E E F E F r N u 1 p 7 5 7 0 0 0 e. 7 r(OG F F f L N w e 3 7 2 1 7 6 4 w I 1 s wL 1 NT3 T FC1 e S N UT a> v I O p F ). NF. R. E L EEE. )) ) ) ) ) 1) 1) )) 1) 1) 1) L SS). N E DSN. 90 90 9n 90 90 90 90 90 90 E. a N HE OT H1 g H I YI. N T( p Cau. ( ( (( (( (( ( ( (f (f (( ( ( a S LLT. t Uwn e 1 e 8 9 0 5 5 N A R. M e 5 5 5 6 6 8 O U 5 1 I.w 7 0 0 0Oo. = a E ANN. E e R N O E O N R M R((. 8 M C M C F C Z Z i

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5/ P)* et 6/ Ale u.a0 ( 2a3 .5 ( s.0 g 7)F 3 23 ( 5.33 ,33r 3 ( 5.3 A 3)E 3 6.1)E 3 6.11E 3 ( e.0 6.5)E 3 ( e.0 ( 0) ( 3.6 et tot 161e et m/ m). et 9/ Sie CC=51 ( 74) =t.0 100 (.5.7 A tt.71F 0 17 ( 8.9 s 12.9)F 0 ( t.4 & te.6)F G l 7)E 2 (.5.2 6.11F t j t 01 ( l.0

(

0/ 16)e e( 0/ 8)*

(

0/ Ale NN.5a ( 24) 7.0E.07 ( 5.2 a v.71E O 17 ( 5.s i 2.71E o ( 4.3 a 1.8)E n ~ ( 2) (.o.3 te.7)F 0 f.e.3 14.21E O (.2.5 14.9)E o l

(

2/ 161e

(

t/ Ale et 0/ Ble CO*58 ( 2a) 2.0E*07 ( 4.0 a 14.3)F 1 11 ( 2.31 1.p)E o (.t.9 + 25.7)F .I ( 0) (.l.6 , 1.1)E 1 ( t.1 I f.3)F 1

(

0/ 16)* e( 0/ A)* et 0/ 8)e FE.59 ( 24) 3.0E*01 (.t.1 a 5.1)E o 23 ( 3.1 1 5.?)F n ( 3.1 & 5.2)F n 37.8)F 0 I ( 0) (.4.5 3.7)E I (=6.6 l et n/ 161e et 0/ A)e of 0/ 81* l C0=60 ( 2a) 2.0E.02 ( t.6 a 1.6)E o 11 ( 2.P i 2.21E o (.8.0 & 10.7)E.1 1.4)E 1 (.5.1 a.71E o ( 0) (.t.1

(

0/ 16)e

(

n/ A)e of 0/ Ble ZN.45 ( 24) .t.0 100 ( 3.7 a 3.5)F 0 12 ( 8.8 i 4.1)E O ( 3.3 & 3.3)F n 7.11F t

7. ale 1 f.I.l

( 01 (. 2.' l et 0/ 16)*

(

0/ ale e( 0/ 81* ZC.95 ( 24) 4.nE.07 ( t.t A 3)E P 12 ( l.3 i .' 4 ) E 7 ( 9.7 a 2.A)F 1 ( 0) ( 7.'e. 122.0)E o (.7.0 372.01E n (.2.5 194.01E 0

(

12/ 161e

(

6/ Al*

(

6/ 8)* e Now.pouTINE nFFFRS TO THE NUmpFP OF 98PaRaTF >FaSUkrHFNTS wHICH >FRF GRFaTEW THaN TEN (to) TINES THF avFwaGF maCwn90uNn FOR THE PEWinn nF TMF RFPowf ee THE FRACTION OF sam 9tF ANALVMFS V TELn !NG OF TEr f a9t E "E a RUOE"FN T 9 (I.F. >3SIG=a) TS INDTCaTFD =TTHIN *( )... _ _ _ _ _ _ _

m M M M M M M m M M M M m m m M M m m matNF YaSaFF OFF9ffF Fhyt DONWF 4Ta{ O s n { f t(Of,1 f a(.flN f 70k { NP, M2/Q}/tQ, P a l,F 1l Stimpapy FOS TMF PERinD 12/26/A0 17/31/Pt AQUATIC t'Nf f S t PC1/RG *ET KEDIU"I VEGETATION macro 4uCL!nES INnicafoo stat!n4A wfGwEtt StaffnN c'IN Tont enestin=9 (NO. AwaLv3ES) knu!Nat wFaN,ha4cE.aNO

Faw,na4GF,ahn "EaN,aarGF,a%D (NONedOUTINE)*

LLD NO. nETErTro** Stal No. 0FTrCTED** NH. OFTFCTEn** EB.C5 f 24) .t.o.100 ( tl5 i .a)E 2 17 ( t.9 g 6)E 7 ( t.3 A 8)F 7 479.n)E O f 1.2 a7.9)F 1 ( 9.6 771.0)F 0 ( 0) (*2.d

f 10/ 16)*
(

5/ a)* of 6/ 8)* AG.lt0M( 24) .t.o.109 ( 6.' 9 g 9.9)E O 11 ( 7.0 1 9.0)E o (.l.6 1 1.2)F 1 7.5)F t ( 0) (.6.7., 9.8)E 1 ( 6.0 of 0/ th)*

(

0/ m)* ef 0/ e1* nu 103 ( 24) 2.0E.02 ( 7.I 3

91E t 12

( 2.9 1 1.7)E t ( 2.1 g 1.0)F t m 4)F t ( 0) (.3.5 134.0)E o (.3.5 134.01E C (.t.0

(

5/ 16)*

(

1/ 4)*

(

2/ s)* CU.106 ( 2a) 7 ( t{e a 1.n)E I 23 f 3.5 1 1.e)E 1 ( 3.5 g 1.e)F 1 8.9)E 1 f P.5 5.01E i (.2.5 = A.6)F 1 ( 0) (.6.6

(

J/ 16)*

(

1/ A)*

(

t/ M)* !.131 ( 2a) n. ( 7f3 g a.a)F t 11 ( t.e i 6)E 2 (.?.8 &

6. t' ) E 1 1.1)F 2

s.3)F 2 (.4.8 ( 0) ( t.6

(

0/ 16)*

(

0/

)*

ef 0/ m)* C5 134 ( 24) 2.OE.07 ( t(2 A 1.01E o 23 f 1.3 i 1.2)E o ( l.3 & 1.2)E e 4.7)E O (.3.0 m,u)F 0 ( 0) (.6.1

f 0/ 16)*
(

0/ m)*

(

0/ 6)* C3 137 ( 24) 7.0E.07 ( 5.'5 A 1.e)E o 17 ( 5.5 1 2.6)E o ( 2.0 g 1.0)F 0 ( 83 (.2.n. 1a.6)E O (.2.8 to.6)E o (.t.5 5.1)F 0

(

4/ 16)*

(

2/ 4)*

(

0/ Mie Ba.la0 ( 2a) 8.0E=07 (.9ft & 2%.7)F 0 11 f 1.7 i 2.7)E i (.t.2 1 5.7)F 0 ( 0) (.3.2 . 1.8)E 2 (.3.0 2.5)F 1

(

0/ 16)*

(

0/ 8)* ef 0/ ele 'CE.141 ( 2a) 4.oE.07 PE7 A .*1F i 17 ( 3.3 i 1.4)E 1 ( 2.7 & t.2)F 1 ( 0) (=1.2 .it.9)E t (=1.2 ft.5)F 1 ( 2.8 100.0)F 0

(

6/ 16)*

(

3/ A)*

(

3/ 8)* CE las ( Pa) 7 ( 6.3 g 1.a)F 1 17 ( 7.6 i 2.?)E 1 ( S.6 g P.7)E 1 183.01E O (.P.7 - 1%.6)F 1 18.1)E I ( 3.7 ( 0) (=1.e

(

6/ 16).

(

a/ 81*

(

3/ M)* NON.R00 TINE RFFFw s tai Twf 'il eM R E W OF SEPARATE.EasukEMENTS kHTCH >ERF GRFaTER TMAN TFN (to) T!*rt THF aWEpacF natur,wnisNn Fne THE PFRitto nF THE WFPopf TMF F pa C T ir'N nF S a splJ ANaty9rs yfFtnING DFTFriaHIE "EasuoF"ENTS i (1.F. > 15 t f,w a ) TS INotC*TFn afTHIN *( )*. Y M E M EEEI tul/tu. pa 43 wagwE VANwrt "FF47TF FNv g Doh.F NT at w a n t r L ne,1 C a t aoeffn=TNG a t?/11/P1 %DwdskV F0D TMF PERinD 12/20/80 AQuaffC UNITS: RCl/*G *LT MEDIUma VEGET& TION = RADIONUCLIOES Tunica Tria staTInws M14wEtt station Coutwnt LocattpNS (NO, ANALVSES) Nnpfha( wtaN,RANGt,aND MF am,Da NGF, aP n "EANepaNSE amn (NON.2OUTINE)* LLn

0 nETErfrnee STal NO. DFTECTED**

Nd. OFTFCTEh** 2' A A 1.11E 1 24 ( 5.0 i 71F 1 ( 5.6 A 7)E t TH.220 ( 24) P.0E.07 ( a.53r 1 m.5)E t ( 2.4 ( 0) (=G.'l. 14.7)E 1 ( ?.4 .( 4/ 16)*

(

1/ A)* ef 3/ 5)* e NON. ROUTINE PFFFRS TO THE NUuRER OF SER& RATE MEaSupFMFNTS WHICH *Eur GREATER TMAN TEN (10) T!*ts TMF avFWaGF MACwGkOUND FOW,THE PER!nn DF THF REPORT es THE FaaCTION OF Sa"PLF ANaLYSFS VIFLDING DETECTePLE "EasuREurNTS (T.E. >3SIGua) TS INDICATFD W11 MIN *( Ja. -A2-

M M M M M M M M M M M M M M M M M M MAINE yahurE OFF911F F wv !#0%=F % ?at DaninLnGTCAL dO*TYHWING a2/o}/19 pag 5 33 $U.*aWy F09 TMF PFRinD 12/70/9n t?/11/el FSTUany HNTTSt wC1/LTTFN EE0!U"I =4TER CADIONUCLIDE9 INoiraTUD STATIONS HIGwEtt 574710% r uN T = nt L UC a T I n%,9 (h0. awatysFS) Nn= Twat .Fau.oa%CE.amn "EaN.daNGE, ann

Fan.cawcr, ann th0%.enuTINEle LLO No.' nFTECTFn**

Stal NO. OFTECTEn** h0 DETFCTEDee BE.7 ( 33) a.0E*01 ( 2'2 7 A 1.1)E O 11 ( 5.4 A t.7)F 0 ( t.7 & 81F o 19.9)E o (.3.1 % 5)F n ( 0) (es** e( D/ 721e et 0/ tile of 0/ 11)* Re80 ( 33) 2.6E*02 ( 2.' 8 1 1)E 2 11 ( 2.5 A 11E 2 ( 2.6 A 6)E 1 2.9)E 2 ( l.e. 69.7)E o 2.9)E 2 ( 2.1 ( 5) ( t."

(

72/ 721e et 11/ tile

(

e/ 11)* CRs51 ( 33) 1.7E*01 ( t,2 a 1.a)E n 12 ( t.9 A 2.2)E o (.l.6 4 2.0)F 0 1.1)E t (.l.2 1.01F t ( 0) ( 2.4

(

0/ 221e

(

c/ lile et 0/ tile MN=58 ( 333 m.' ( e.5 A 1.3)E.1 12 ( 4.7 A 2.1)E.1 (.3.9 & 217.9)E.3 1.2)E O ( 0) (.e.7 13.A)E =1 f.t.1 et 0/ 721e et n/ tile er n/ 11). CD.58 ( 33) R. (.6.7 a 12.11E 2 12 ( 1.31 1.'9)E.1 ( l.9 a 2.2)F .t ( 0) (.9.3. In.7)E 1 (.l.e. .o)E O

(

0/ 22)* et 4/ 11)*

(

0/ tile FE*19 ( 333 1.0E*01 (.7.8 g 7.9)E.3 20 ( 9.3 1 4.4)E.1 ( 9.3 1 4.e)F.1 ( 0) (.3.3 1.21F 0 f.t.2 3.7)F o

(

0/ 721e et 0/ 11)e et 0/ lile CD.60 ( 33) 9 ( 2.5 a 1.5)E 1 11 (.4.8 a te.A)E.2 (.6.8 & 20.5)E.2 9)F 0 f.R.9 11.01r -l ( 03 (.t.8 et up 22)e et n/ 11)*

(

0/ 11)* ZN.35 ( 33) a[ ( 7[1 g 379.6)F 3 17 ( t.5 A 5.41E.1 (-7.5 A 49.1)E.2 4.2)E O (.2.5 2.7)F 0 ( 0) (.P.A

(

0/ 22)*

(

0/ ti)e

(

0/ 111e ZR.95 ( 33) 1.0Ee01 (.t.6 a 2.71E.1 2n ( 6.6 A 5.3)E 1 ( 6.6 & 5.3)F.1 ( 0) ( 2.5 3.0)F o (-2.2 3.e)F 0 of 0/ 271e e( 0/ ti)e et 0/ tile e NON.WnuTINE RFFFR9 TO THF NH"RER nr 9FPakaTE MFiSHbF"ENTS aHICH arar GuEaTFw TMaN TFN (101 Tiari Twr avropGF matwr.wneNn Fnp TkE PFwlDn HF THE Rt Wiiw T se TMF FpacTynn nF sa"PLF ANat ysFM yTrtnisc nFTECTa8tE *FaSUDFwFNT3 (f.F. >387Gwa) TS t%DitaTFD aTTHIN et )e. -A3-

g NE mFE 05& 5{Yr Fwv!RnNuFNtal DaDIf't n6TC %L MON {THWING a7/n}/tO. +3aGF 4e Sowanwv 500 Twr spelnn t?;>n/no tp/tt/At REDIU"3 HATER FSTOaRY = HNffSt UC I /L i f s d ea0!ONHClinE9 INDIrafoo 9taTinNS w!GHE=T $7atinN CON T wnt thCaTInNg (Nn. aNatV1ES) N0wtNat wfaN.eaNCE.ahn

Faw,waNGF,a*b
Eau uaNGF, ann (N04 800TINEle LLO NO.' DEffffEn**

Stal No. nFTFCTFD**

- h.

OFTFCTFree AG.storf 31) 1.eF+0s ( lf'5 g 1.7)F 0 17 ( t.9 t.e)E o ( t.1 1 1.8)F 0 ( 0) (=9.7 9.%tt o (=0.P m.n)F 0 = of 0# 72)*

(

0# t-

(

0/ tile

U*t03 ( 33) 8

(=7.8 a 2.3)E.t 17 f.e.7 A 3.5)E -t (=9.5 A 2.81F =t ( 0) (=2.3 1.e)E o (=2.2 .A)E O at 0/ ??)e et n/ i;. of 0/ tile CU.106 ( 33) 4.0F+0i (=ef7 A to.7)E.1 20 ( 2.9 i 2.'2)E n ( 2.9 1 2.21F n ( 0) (.t.3 t.1)E I (.5.4 1>.9)E O et 0/ 221e et n/ tile et 0/ tile !=131 ( 11 0, ( 5.'5 g m %)E =t 12 ( a.5 i te.2)E .1 ( d.9 A A.8)F =t ( J) (.8.5 12.2)E O (.5.7 4.a)E n et 0/ 221e et n/ 11)* et 0/ 111e C8=138 ( 33) 9 (=5.a A t.%)E -1 dn f=2.4 i 2.11E -t (=2.P & 2.1)E =1 ( 0) (.7.0 .A)E n = (=t.2. 1.1)E o at 0/ 221e et n/ ti)e of n/ 111e C8=t37 ( 33) 9.' ( t.[ A A 1.9)F 1 11 ( 2.1 i 3.1)E.1 (.t.3 g 1.9)E.1 ( 0) (=t.5 7.1)E O (*t.3 7)F 0

(

0/ 77)e et n/ 31). et 0/ ttle BA=le0 ( 33) 1.9E*01 (.3.'3 A 4.9)E.1 11 ( e.4 A 5.9)E et ( t.3 & 6.0)F -1 ( 0) (=6.3 e.%)E o (=3.6 2.3)F 0 of o/ 22)e et n/ 11)*

(

0/ tile CE-tal ( 33) 2.0E*01 (.5f3 a 1.6)E.1 12 ( 2.1 i 4.8)E *1 ( t.4 & 3.9)F =t ( 0) (.4.4 3.6)E o (-l.7 - 2.5)E O et n/ 27)e et n/ 31)* et 0/ tile CE= lee ( 33) 4.0F+01 ( 2lt 4 to.1)F -t it ( 9.2 i 17.8)E *1 (=t.9 1 1.01F 0 ( n) (=9.2 10.2)E o (=7.5 3.5)E 0

(

0/ 27)e

(

n/ Ille et ~0/ 11)* TH=724 ( 31) 1.0Ee01 ( = 5.' ? A %.itF 1 17 ( A.% A 76.91E =? (=9.5 & 4.11F =t ( 0) (-6.M 7.7)F 0 = f.2.8 9)F 0 = of O/ 771* et n/ 11)e ef 0/ tt)e e NnN= ROUT !*,F RF FF R S TO THE NuukER nF SEPaRaTF wFa3DNFMFNTS ewitw hEHF G4faTFW THaN TFN (int TI"F9 THF avppaGF paCuGROUNn Fhw TkE PEpinn nF THE W5 PORT et THE FwattgpN OF %adblF aNaLY3F% Y TF LnING nFTE r f anl E MEasuoEMENTS (T.F. >3stcwas is r*ortarrn trwrN et )..

M M M M M M m e m e e m e e e m a walNF vatars n>F9fTF F Nv f onN.6 > vat paninLnr.TCal "oNTTD6tNr. MP/o1#10 plcr 35 sua.awy rao far vtwTnn tapac/mo. sp/5t/ev FStusev iWTTS: PCI/LTTEW KED!d": aaTEW RADIONUCLIDES I NDIt a f t's staTTans m1GwF97 st a f in'4 C oN T wnt

t. sit a f inn m (NO, awatvsES) NowtNal "EaN,eshcE, ann

=EaN,estGF,aNo aF. a N, e a N G F, a Nn STA,' No. DrTFCTEDea No. OrtrCTEDa* (NON.enUTINF)* LLn NO' DETFrTFre e. H.3 ( 12) 9.0t+01 ( 4.' 1 1 1.1)*~ 2 17 ( 6.7 A .51F 2 ( I.0 t 9)F 2 28.9)F 1 T.e1F 7 (ed.1 TA.11F 1 ( %.6 ( 0) ( 4.6

(

a/ m). .( e/ ele et 3/ a). e NON.ROOTINF prFFes TO THE NU=hER OF 9FpaRaTF *Ea5HWFrFNTS pHICH mE4F GRFaTER THAN TEN (to) f1=ES TwF avreaGE RaCWGRnUNn FDW TNF PERIOn OF TMF wrPfiWT es TME F#atif04 0F Sa*pLF aNatvsFS TTre nTNG DETECTast E wr a SI'R F"E N T S (1.E. >35tGual TS INDICATFri ALTHIN er je. l

!555 E E E E E 2 1 1 13 2 o I. t 0 0 0 00 00 0t S N nD* FF 5 F F F FF FF EF EF EE EE iN e ) ) 1 ) ) ) ) ) )1 )1 )) )) ) )

7. h.

00 12 20 56 2 '. 3 45 t a, D

7. e, f

E a 48 S 1 73 2o 02 30 o1 7 RET 2a. eGC. t 1

e 1

e 1 e 1

o e

2* E L%F. ) ) l ) l l 5) t l ) b a aT. m 4 e 4 e e 1 4 e a a E t k, F g. 1- &= A. A. 1. 1-T n n I a% / / / / / / / / / 01 0 920 976 230 5 5. U P. 0 0

9. M. 0

2. U. 0 L

T a.. 1 10 q.H %F / 5? t2 73 t2 32.f 9 e. ( 5 2. ( N 72 62 = - f ( t = f R I O C c t ( p ( ( e ( C * ( ( e ( ( e ( ' o ( ( * ( ( e (( e ( ( o E T A ET 3 R k 7 o 1 O Go 1 2 1 1 1 e 0 P a w FE 0 E E E E E E F E E R R 4 t nD*. 1 ) 1 1 1 ) ) 1 ) F = F 7 a. 0 9 0 7 2 0 7 MS e ih e. T sn. 1 4 .t 2 a e 7 2 3 9 HTT n/ 3 TFi. P 1 e e e C N 6 w/ SGC. ) ) ) ) l ) ) l ) !F E 4 h7 %r. a 4 8 4 e a 8 e 4 w0" e F l 1 t a T. r a 4 1 a 1 1 A 1 A mW / / / / / / / / / SoU n, O f t 0 0 0 0 0 e e 0 0 tis s E 1 5 6 9 2 P. 9 7 2 NR a u-w% a Ga.. t l 5 9 t EF E 3 9 !ro 7 6 ( t t t ( ( ( eP " l0 wen ( ( a B ( f e f ( e ( e ( e ( e ( e ( E R EE C/ Uh l n ST a r, ? a 'F. d 'T np l g/ e e t T a a 1 e 7 1 e 3 8 wr P a l S 2 2 1 2 1 1 2 1 2 FE. F T e n TnF l n a h D u R U 0 A nG t 1 o1 o C O o 0 O PoN tn 7 1 1 1 t. 2 1 1 F c1 a i T. w = Se nf o 1+ e e 6 F EE EF FE Ef EE EE Ft EE tt o

s T e n.

1 ) ) ) ) ) 1 ) ) ) ) ) 1 ) 1 1 ) 1 F aE k r 4 71 77 77 OmT w

7. e.

. a.

3. a.

3. e.

%. 9 0.>. Yi a e e ,F k T

cC 71 97 21 1

21 83 31 a7 31 R F w aw TET t uF 9 e 3 e e e e 2 e Eg3f va wnT. 1 1 ) 1 ) ) ) ) 1 ) a a f f. r 2 2 2 ? 7 2 2 2 ? = k m o o. n oF v N o a.1 21 a.1 a.t &.1 a.1 a.1 g.1 &.t h vt n t F F a w.. f / / / / f / / / a aF gE o 71 n 130 350 1 60 %T r V r a' n.J 2 u. o

e. 8 0

~.70 o 3. o 0.'2 0 E. 5 J g F a a t W 22 T w r g a 7 t. 7 t. 2 t.

s. 1 2 1

t.

t t

5= = 1 l 72 t = ( - f = t T st = ( ( F U (( o ( ( a ( ( * ( ( * (( e ( ( e (( * ( ( o (( e O to F. ef f T9p N O T E. T t = a a! S9 r? 1 1 1 1 2 1 n t 0 0 0 0 0 F F + r) n) s a e + E E p n a F F. E i ww he. E u e. 0 7 0 0 8 8 A s rf iG F n t L h T t s e = t 1 1 s G 0 8 2 1 ! NT s a N T EC1 v UT a> ) e O e NF. u Ssl R. E t EfE ) ) ) ) )) ) ) )) )) ) ) )) )) a E. N i Di%. e8 60 60 60 60 6e 60 60 66 N wt I s IvI t 1 1 1 1 1 1 1 1 OT uf w Ca0. ( ( ( ( ( ( f ( ( ( ( ( ( ( (( (( N f( a e LtT a uw0 1 a 8 9 0 5 5 e m ws8 o.4 9 e s U 7 5 5 5 5 6 6 0 I I D O00. s f a44. E e R w O E D 4 R p m((. B. K C M C F C 2 Z

M m M M M l l DO Ol 0n 0 1 I 0n 1 O o S 1 t. 1 =. = 1 M7 N One. FF EE EF EE FE EF FE EE FE FF I we. )) ) ) ) ) ) ) }) )1 )) ) 1 ) ) ) ) 3

a. 0 63, 0

%. 8 a.1 3 T aD. 66 38 55 1 50 1 a ,E CF 1 4a 29 21 a 22 20 aa 22 91 9c O6C l e e e e l

1 e

Mg g LNF l ) l ) ) l ) ) ) ) R at e 4 e a 4 e 4 4 4 4 L m, f a E O O 1. 1. 1. 1-1. g= a. 1. 1. p f f R % / / / / / / / / / / L T a.. 150

4. M. 0

9. e u 0

o. e. 0 550 1 00 730 280 450 21

/ NFO M o. l H* N 1 e l I 42 53 2 6. t 2 l. 4 9. (

6. l.

8

6. (

l. 7 f

C ( ( = = t = t t =t t e t P (f e ( (

f( e

(( * ( ( e ( ( e (( e ( ( e ( ( e ( ( e F / T 3 e a a S Fi / f W d Go 2 f G o 1 2 1 1 1 o D 1 M8 P 0 rF E E E E E E E E E r wH 0' n. e ) ) ) ) 1 1 ) ) ) ) E 1 5 3 5 a. 1 e. 6 6 1 MS 3 =F 1 e e A/ a, F T D 1 a 2 5 1 2 1 3 l 4 2 HT T Mf 1 7rT. e e e 7 e f e 2 e C N 7 a/ $cC. l ) ) l ) ) ) l ) ) fF F H7 wF. e 4 4 a 4 4 a e a a Hna 4 7 1 t aT. m F r i i a A i i a i 1 1 nw f t D, D / / / / / / / / / / bou E u. N N 0 a. a. 5 0 9 3 6 2 9 0 0 0 0 0 o 0 0 n n Tg S MwA Ga.. M lu I F1 t 2 5 3 t. a. t 7 6 FFE t M" N t ( t t ( ( t t ( ( "PM a a ( e ( ( e ( e ( e ( e ( e ( e ( ( e F C/ NF { 0 D M 1, r 2 ST l H e's [ ~a a Mi t7 4 FdI n1 7 t a i 2 7 3 2 3 7 T = of 5 I 2 l 1 1 1 1 1 1 I F ( n F T. a Tuf) k aNO n wH t a a On 1 1 2 1 I. 1 2 l. st 9 1 l o l 1 0 0 O 0o o 0 pW N 1 u N = 6 GI %F Hne 5 mnt P I h

F F f F FF EE EF EF EE FE EE FF Ce e 6

T an. 1 ) i ) 1 ) 1 ) ) ) ) 1 ) ) ) ) ) ) 3 ) rar 57 49 55 97 09 8 .r 01

o. 7

3. h.

6

2. h.

oHt n MptmF = 7 FT y i T 9 CC 77 l 33 9 27 71 1 .l 67 75 o r. s t w g N F 7e e e 1 e 1 e e e e 5 1 F t vL D a T. 1 t ) 1 ) ) 1 ) 1 ) ) 4 s t I. % D OwF 2 2 2 2 2 2 2 2 2 2 = D $ 1 vFy 5 F T ,D A.1 &.1 a.1 &.1 a-a.1 A.1 a.1 A.1 g.1 %v1 n a s ry Ce'. / / / / / / / / / / a4 F MT tO 380 620 k l 7,50 '.70 ~. 9. n o50 250 700 t90 7 5 E %T l a n*N. '880 f

g g

g HF a a g w N h7 d. 7 2. ( P 6. ( 2 t. 2 l. l. 7 2. (

2. a. t l

71 e T H c s. I ( = ( ( ( ( =( 1 Fi r H (( * ( ( * ( ( * ( ( * ( ( e ( ( * ( ( * (( * ( ( * ( ( e o I n o% T9D a F p t S* a M D! Ss 1 1 1 1 t FT i D t 0 0 9 0 n F F N a e + e e e F) Oi s U wD. F F F E F en a F O f L a. 0 5 n. o. t N

u R

mL 2 P 9 9 E(OC Mv k C 0 1 4 c 1 2 s T f a 4 ! NI 1 = T S C ', )

OT a D p

SS). O W F t EEE. )) ) 1 ) ) ) ) 1 f ) ) ) ) ) ) )) 1) NF. R. = f FS N. 6n 40 bn 6n 6o 6n 60 60 60 00 F. a a IYI. 1 1 l 1 1 1 1 1 1 1 NHf Mt a = LLT. OT w1 w Ca y ( ( ( ( ( ( (( ( ( ( ( (( ( f ( ( (( N T ( UNn = M NA a. 0 3 6 e 7 o t s U 0 5 1 0 0 1 3 3 e e a I 1.w 9 1 3 l l e 1 1 1 1 l. D 00C. = = = = ah %. 8 G U 0 1 mE 3 S A E E M R( (. N A R 2 1 C C R C C

m m M M M n 1 1 1 s w ooe. Er FE I N e. 1) ) ) b 66 a, D

5. A.

T F. a crT 1 1 h3 tGt 1 2a i tNF ) l h aT a a .W so.E E 1. o I

4. o p

T / f I a% . o, n L T a.. 1 / NFo c" 0 o N 63 I f ( R cp ( g o ( (. E T a 1 ET 0 S RN f f 1 2 Gn P J m rr a n E F pk t nO* ) 1 E

F u.

4 Ms a i% e T a, 0 - / a E. 5 HTi 1 3 tET. 1 e f N g / sGC. l ) tFE i 7 NE. e a dO" a F T 1 7 aT. r A A nR 0, O T 4 / / SuU E o 0 TlS 4 0 N ia wN GA.. IE 2 EEF t 0 H

hi 3

t ( " P> a 4 f e ( F WEE C/ T n UHL 3TH / a a p l. y a. I wf t t l i " rr l S I l FE. F T e h T nF1 a ann s p u 0 anC n o 2t pen i 9 I. FGt N N Swo( n n. e e NE 6 E FF tl *

P f t D.

1 ) 1 ) FaF f s 19 0pf h a .F 1 a. F ft n 7FT T 9Gr. A 4 8 Ar w NE. 2* Ecsf wo E aT. ) ) asrf F. P 2 imesa N g. O N. D Fy T a.I &.1 tNvLD F r a s / / aaE r a "a..

9. e. 6

'6.N. t ry L Nf f t T r " =-. MFa a a. 74 f T H t t. t s = ( TEI s. f F J ( ( o ((

O LD i> 9' T sp N r "a T

9

W!SS 1

1 FY I o t 0 0 F F N a E) O) s u Nn F E R 0 a 1 Nu 6 e. r n f e. E(OG e = L G 0 1 0 N II INTS N TEC3 y uT a> )

o p

o SM) NF. H. E E EEE ) ) )) E. a T DSh. 60 60 a I Y!. 1 1 N wE m LLT. nTHI CaU. ( ( ( ( N T( g OwO 8 n N A R. 2 u O e f I .N 2 3 D DO0. [ aNh. M a s(t. T M I I l

l m e m M M M M M M M M M M M M M walkE VawaFE 8'FF5ffr *Nv!huw=FNTal pa n f r'LnGT C at mos t ino t e.G e 2 / n.t /19 04GF 39 Ruwwady FOR THE WFRinn 12/2n/ed 12/31/P1 l l NEDIU.: neTED PRFCTPffaff0N UNITSt prt/LTTFw p a D ioNuCL 10 E S INo!CaTop STATIONS HI4He g? StaTInN CuhTent LOCATIONS (NO. aNatTSES) Nn*INat

Eaw,RANGF,aNO

" FAN,paNGF,ahu " fan, RANGE,aND (N0m.200TINFlo LLD No, ntTECTFO*e 3T4] NO. UrTFCitne. No, nFTFCTE0ee e.......... H.3 ( 43) 0.0F*01 ( 1.' T a 11F 2 12 ( 1. 9 a .a)F p ( t.N & 41F 2 ( 0) (.t.A a.11F 2 (.t.5 3.4)E 2 (.l.3 3.e)E 2

(

10/ 321e et 4/ tile et 3/ 111e e NnN.ROUTTNF RFFFes 70 THE wumpER nr SEpapaTF =EiSt'WFwrNTS nHICH *EDF GREATF4 TwaN TEN (to) TIwFS TwF avFuaGF p aCxGont)Nn FflW THE PEWisin OF THE RFPORT ee THE FeaCTTON OF Sa=Pir aNatf$FS f f Et o1Nn nFTt riaRI E tra9URFMENTM (I.F. >1STCua) TS INDTCaTFn offwtw *( ).. I IV. MILK COW CENSUS DATA A cersus of all milk cows within an 8 Km radius of the plant was carried cut on May 11 and October 21, 1981. Table 1 indicates the results of this survey; there was no change in milk sampling locations during 1981. I I I I lg I I I I I I I 'I 50-

I Table 1 I Number of Cows I Fa rm Location May October Sherwood Baker Woolwich 4 4 i 7.2 Vm, 2680 Lester llolbrook Woolwich 20 23 7.1 Ym, 2690 Wayne Leeman Woolwich 4 5 7.9 Km, 2290 Bruce Dickson Wiscasset 3 4 2.7 Ym, 100 Ronald flodgdon Wiscasset 1 2 2.1 rm, 356o Frank Richards Edgecomb 1 1 7.7 rm, 940 John Potter Edgecomb 1 1 I

7. 9 rm, 410 I

I I I I I l I I 1

I I V. SUALITY ASSURA?;CE PROGRA!! I Three separate Quality Assurance programs were performed during 1981 to demonstrate the validity of laboratory analyses by the Yankee Environmental Laboratory (YEL). YEL participates in the EPA Interlaboratory Comparison (cross-check) program for those species and matrices routinely analyzed by the laboratory. This provides an independent check of accuracy and precision of the laboratory analysis. When the results of the cross-check analysis fall outside of the control limit, an investigation is made to deternine the cause of the problem I and corrective measures are taken. YEL naintains an intralaboratory quality control program to assure the validity and reliability of the data. This program includes quality control of laboratory equipment, use of reference standards for calibration, determination of counting ef ficiencies and analysis of blank and spiked samples. The records of the quality control program are revieved by the responsible cognizant individual, and corrective measures are taken whenever applicable. A blind duplicate / replicate program is maintained in which samples are prepared from split or homogenous cedia and sent to the laboratory for analysis. The results f rom this blind duplicate program are used to check for precision in laboratory analyses. EPA Intralaboratory and Interlaboratory Results I The Quality Assurance program implemented at the analytical laboratory indicated good precision and accuracy in reported values. Table 2 shous the results of accuracy and precision for laboratory analyses in 1981 for EPA samples, intralaboratory analyses and interlaboratory cross-check analyses. For securacy, 37.1 and 61.7 percent of the results were within 5 and 10 percent of the known values, respectively, with 93.7 percent of all results falling within the laboratory criteria of 15 percent. For precision, 70.6 and 88.4 percent of the results were within 5 and 10 percent of the mean, I respectively, with 99.8 peru.it of all results meeting the laboratory criteria of 15 percent. I M M M M M m m m m m t b l l I l l Table 2 EPA Intralaboratory and Interlaboratory Result s i I'recision Accuracy Total Number 0 to 5% 0 to 10% 0 to 15%* Total Nunber 0 to 5% 0 to 10% 0 to 15%* of Samples of Samples 472 175 291 443 405 286 358 404 1 (37.1%) (61.7%) (93.9%) (70.6%) (88.4%) (99.8%) \\ l 1

This category also contains those samples having a verified zero concentration which were analyzed and found not to contain the isotope of interest.

l l l I i l l l I l , i

Blind Duplicate-Replicate Program A total of 76 paired samples were submitted for analysis during 1981. The data base used for the duplicate-replicate analysis consisted of pair measurements of 26 gamma emitting nuclides, trituim, Strontium-89, Strontium-90, low level I-131, gross beta and Radium-226. A dual level criteria f or agreement was established if the paired measurements fall within 115 percent of their average value, then agreceent between the measuremcnts has been met. If the value falls outside of the + 15 percent, then a two sigma range (95 percent confidence level) for duplicates and a three sigma range (99 percent confidence level) for replicates is established for each of the analyses. If the ranges overlap, agreement is obtained. Two thousand three hundred and twenty-six paired duplicate and replicate measurements were analyzed for 1981. A toal of 98.8 percent of all measurements fell within the established criteria discussed above. Of the 1.2 percent of the measurecents which fell outside of the criteria, most of these were made up of fallout and I plant-related radionuclides contained in sediment samples. Table 3'shows the 4 This results of some radionuclides measured in sediment samples during 1981. table indicates that only man-made radionuclides fell outside of the criteria, and that the naturally occurring radionuclides K-40 and Th-228, which are normally evenly distributed in sediment, agree well. Since E-40 and Th-228 in sediment and other media and Co-60, Cs-134 and Cs-137 show good agreement show good agreement in other media, the poor agreement in sediment can be at tributed to non-unif orm distribution of man-made radionuclides in these samples, rather than poor precision in laboratory analysis. I I I 54-

Table 3 Agreement of Radionuclides in Sediment Samples Lab Sample Numbers G27850 G27851 G27852 C27853 G23430 C23916 G23915 G23917 G23784 Nuclides C27867 G27868 C27869 G27870 G23914 G23931 G23932 G23933 G23804 l Cc-141 20 6.5% 20 20 12% 20 20 20 20 Ge-144 20 20 20 20 12% 20 20 i 10% 20 Cs-137 14% 11% I 2% 2% Cs-134 1.6% 20 20 30 8% 20 Co-60 30 10% 6.2% 10% 4% 10% 15% Th-228 30 5.2% 20 6.8% 9% 2% 4% 7% 8% K-40 2.9% 1.5% 1.6% 1.9% 3% 1% 1% 12 3% ll

values outside 3 sigma level.

II 9 I . I

i i VI. ADDSPl!ERIC FALIIUT DURnK; 1981 The following pages sumnrize atnespheric fallout fran wapons testing during 1981. l l I I I I > l

I VI. ATHOSPHERIC FALLOUT DURII;G 1981 on October 17, 1980 the People's Republic of China detonated a nuclear I device in the atmosphere at the Iop lior test site in northwest China. The explosion was estimated by the Department of Energy to be in the 200 kilotons to one megaton yield range. The clouds of radioactive debris began drifting over the western part of the United States on October 19, 1980. I During the beginning of 1;ovember,1980, increased airborne beta activity was detected at both indicator and control locations (Figures 8 and 9). The airborne beta activity continued to increase into 1981, and a gamma analysis of fourth quarter composite filters showed detectable concentrations of fission products which are associated with the October Chinese test (Figures 10 to 13). As expected, a significant increase in airborne gross beta activity was detected on air particulate filter samples submitted from all sampling locations during the first three quarters of 1981. The highest airborne gross beta activity occurred during the spring and summer months when the intermi:ing of the stratosphere and troposhere causes additional radioactive debris from weapon testing to be introducted into the troposhere I (Figure 14). For the first three quarters of 1981, gamma analysis performed quarterly on weekly composite air particulate filter samples showed detectable concentrations of fallout fission products related to the Chinese weapons test (Figures 15 to 20). I In addition to our required Technical Specification air sampling locations, an additional control air sampler was set up at our Environmental I Laboratory in I?cstborough, Massachusetts. Air particulate samples analyzed from this location showed detectable similar levels of fission products as the I1 filter samples submitted from the environs of Maine Yankee. (Figures 21 to 2 7). Fallout was also detected in other environmental media during 1981. Aquatic and terrestrial vegetation samples collected from indicator and control locations showed fission products related to fallout from the Chinese weapons test. I I

Figure 8 MAINE YANKEE R.P. FILTERS GR-B 2. SO E-01 -- o 2. 00E : 1 50E-01 2: i rn a: w e.- E 1.00E-01 2 1 o c-S.00E-02 ] 4 .Y. / O. n o n.n g o.o n n j o n n o.j u n n,n g o o n o j u o n o, n o o n, n n o n,, o n, o n,, n, o n i in n o..g o n o nig i JAN. FEB. MAR. APR. MRY JUNE JULY RUG. SEP. OCT. NOV. DEC. 1980 l Z VALUES INDICATE ACTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT STATION 11 = X STATION 12 = x STATION 13 =Z STATION 14 = + STATION 15 =X STATION 16 = 0 STRTION 17 =0 STATION 28 =a M G. !M M ;8 M'1M M M M Y M M@ M MM M

Figure 9 MRINE YANKEE R.P. FILTERS GR-B l

1. 0 0 E + 0 0 --

n } 8.00E-015 600E-015 I en m i '9 ce w 4.00E-01 2 s u a. 2.00E-01-~ [ u =-* _h O. oin o o giu n o oin u no jin u u n g oio n o j o.uin igiin n oijin o n i.in n oin gi oi o nij oi o n o t o io n oi JRN. FEB. MRR. APR. MRY JUNE JULY

RUG, SEP.

OCT. NOV. DEC. 1980 Z VALUES INDICATE RCTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT STRTION 29 =X M WM :M MM M *M ms MM 8 M M m m mM M

Figure 10 MAINE YANKEE A.P. FILTERS RU-103 2. S O E : 2.00E-03i 1.50E-03-~ b m a: d E 1 00E-03 ha a. ~ 5.00E-04-~ E y~ .........i.........,.........i.........,.........,........i........,.........i.........i.........i.........,........, JAN. FEB. MAR. APR. MRY JUNE JULY RUG. SEP. OCT. NOV. DEC. 1980 Z VALUES INDICATE ACTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT STATION 11 =X STATION 12 = X STATION 13 = Z STRIION 14 = + STATION 15 =X STATION 16 =0 STATION 17 =8 STATION 28 =a STATION 29 =+ M M M /M M M M W W W M W W M.M W FM t3M M i

Ficure 11 e MAINE YANKEE R.P. FILTERS CE-141 7. 5 0 E-03 -- 6.00E : 4.50E-03 2 b b m a: to E 3.00E-03,2 h E 5 1.50E-03-~ L

~

0* iiiiiisis g s einisi n g i.iis ia a n gia n i n a i sig n aim a a n g s s a is is s a gi a.a s. a s a g..i n i n s i g ni a i s i s s a j a is s i ai sig s is s a. ii n g s : a s si sig JRN. FES. MRR. APR. MAY JUNE JULY RUG. SEP. OCT. NOV. DEC. 1980 Z VRLUES INDICATE ACTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT STATION 12 =X STATION 13 = X STATION 14 =Z STATION 15 = + STATION 16 =X mm m :g ,g S 10 Q Q ST Q 0N g Q TR g y y ,m m

Figure 12 MRINE YRNKEE R.P. FILTERS ZR-95 2. 50E : 2.00E-02 ~ 1.50E '9 a: i w "o

i i

8 1.00E-02-~ .s u a. 5 00E-03-~ b = C. ~ ......... i....,.... i... o.... i.. o..... i.... u... i......... i......... i. n o, o, i......... i o,,,, o,, JRN. FEB. MRR. APR. MAY JUNE JULY RUG. SEP. OCT. NOV. DEC. 1980 Z VALUES INDICATE RCTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT STATION 11 = X STATION 12 = X STATION 13 =Z STATION 14 = + STATION 15 =X STATION 16 =0 STRTION 17 = [D STATION 28 =a STATION 29 =+ au m -in s -- M, ~ m sie gg mas aus aus e umul 'JiiiB 8'

Figure 13 l 1 MAINE YANKEE R.P. FILTERS NB-95 2 75E-02 -- 2.20E-02-~ 1.65E-02i m' to / ? c: na / ~ E 1.10E-02-- / s U i / c_ ~ / ~ / / 5.50E-03i / 1 0. .,n..,.n.,... n...g.,n n..g... J u n3.,,...ni, .....ing...r o..jinio..;...iii., ..n...;,,iii,,n; JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 1980 Z VALUES INDICATE ACTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT STATION 11 = X STATION 12 = X STATION 13 = Z STATION 14 = + STATION 15 =X STATION 16

o STATION 17

=0 STATION 28 = A STATION 29 =+ mpy u - e. m m miiht M M

-a m ---a-I I m . I (N O O . _) o a Pl T" .n rn 8 i s 1 O O C C O s I en iiliiiiieieiliiiiiiiiiI,i,,,i,,iI,,,,e,,,,1 4 u,, e s 3 t i c ' / . '.d [ [ 4 'D 'D i - -4 - T b b c_

2 I

Ezz rn 2

~

81 -- (*: I y 2-R- efy '.C M 'X -r' () i is te rs ~~' <* M e: m cn, 4 .: s - 1 m -4 t' }) : T T

~

j, .+ +1 i o0 - 7 r 7, gs s '~ ~^~ 4 m Ic. It se ~7 3 l C. N d N 2 m M l rn,, U,1 4 w v3 g im c -< )) g-- n n y, y fb U' (- g y h e O o ;- _. g, z z o m I'p) [ ys *ff" 'N C'l ~ ~ (. .n s., 's (, m Il? t. m 45 [a M 'I, J n fD L' I[ j C. - -1 -1 y ET T y C: Y ,. ~, ~ t- -. ~ D9} ~ Z 2 s~- EN 0! r, : G Gm t .4 5-f -- 1 1 r, "1 n 7 -1 ( ) ~ T --< Z I (m* L 2 I ,U1 = .m e ~l s' C h r<- I; 3 l r

Figure 15 l MRINE YANKEE LI.-144 RP Fil TERS 4. 5G E

3.60E :

/ / b / m

2. 70E -

0 s i w E u N a 8 1.80E y ) u \\ r j

/

'N x 9.00 E. Y 0 ~......i....n...i......i.......i......i........i.......jn......,,,,i....g.......;.no,iiiii..inii JRN. FEB. MRR. RoR. tW Y JUNE JULY RUG. SEP. OCT. NOV. D c 1'381 Z VALUES !NDICHTI. ACTIVITY NUMBERS OUTSIDE THE RAN:.f 0F THE FLOT STRTION 11 = X ST ATION 12 X ST ATION 13

Z '; T A T I ON 14

= + S TRT ION 15 =X STRTION IS = O S TRr10N 17

D STATION 2B

=A STpriON 23 =t M M M 9 N M M M M M M M M M M M M M

PCl/ CUBIC HETER I O O N m e O B)

n b

O I O O O O O m m m m M i i i i 3 O O O O O W N N N N ie!t iin8 8 t t i i eainin!I lt iei!t I i t i et et i enit ieat t i t t I 3 en en N 2 l -4 -4 C_ - mm< m: --t wm zI m - r-IO O C ~ ~< l Z 2 m h O I vi l it ~ O It - hM ~IE T: i' en, en -< _4 m W-T "D 2 --e --4 I O 7 O O ~4 D~ z z

t! -

py Z: 7, -J N ,g (t) N m In ?E ,) ii z 4 8Xt

2 zn

?n an Ch (P I, _, g yj TJ M G: e e c ni E 5 O O 2 2 O m 8N g (D (0

W,,

e-* D c; : m r: Iti te -< ~ g f [* M2 l / m / th 0 I~ C- / -.-9 --1 y) 1"D C. ' 1 -4 -s / T m ~ ~ ep O O N 7 2 2 (n ; O T-IN l .-- m T) : (.) A --t I Il il m o ~ I -) 1 + n-T H: LO r --4 O

D

-9 ~ I .1 Z] O O-2 <~ I O~ E II E I. X

I

Figure 17 7 Mis!NE YANKff LS-137 HP FIL TI.R5 3. 50 E-03 -- i 2.80E-03i a: 2 10E-03 2 6-- s i tu b tu 9 r u as ~ 3 1.40E s l c_ 7.00E-04i / l \\ l [ K 1 0. ~ u n i o g i i o n i n g i i n n i.. p i i n u n p o u i i i i p i o n i o. p n i o n i g..,i n i n p i i.. u i g i n i n i n g u i u i n g u o n n i g JAN. FEB. MAR. AFR. MhY JUNE JULY AUG. SEP. OCT. NOV. DEC. 1991 Z VALUES INDICRTE ACTIVITY NUMBERS OUTGIDE THE RANGF OF THE PLOT STATION 11

X GTATION 12

X STATION 13

Z STATION 14

1-ST AT ION 15

X STATION 16 20 ETATION 17

ElSTATION 28

A STATION 29

+

v c- ~ w _ _ r n ___ m a u m-m v m

( l Figure 18 MRINE YANKEl RU-103 RF FILTt'RS 1 00E. 1 8.00E-03i \\ \\ \\ ~ e 6.00E-03 s w w I \\ u s 2 \\ 8 4.00E-03-~ t 1 s 1 u o. A ~ 2.00E _ x g ~- 3 0. . n. n.., ;........, ;.. n i n.. ; n, n.. ; n,,,,,,,,,, n,,.. ; n n i... ; n i i n, n ; n o n n, ;, n..., n ;7 - n,,,,;n n n,..; JRN. FEB. MRR. RPR. MRY JUNE JULY RUS. ELP. OCT. NOV. DEC. I'381 Z VALUES INDICATE RCTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT f STATION 11

X STATION 12

X ETATION 13

E CTAT10N 14

+ S 'ATION IS

X

( STRTION 16 =0 ETATION 17 26 STATION 28 =1 STRTION 29 =+ 9e====== == ame

== ==

==

am as

== m as

Figure 19 Nh!NE Y6Ndfl ff.-141 AP FILTI.RL 7. 5 G E - 0 3 -- G.00E-03 e 4.5GE-03-~ n I o a m 8 3.00E-03-~ s u N s a. l l ~ 1 5GE-03 N 7: h W-A _ . n...... p n i n. n j i. o n.. p o n o n p u o n. j.. n. n o p... n.. j.. LTo u j u n. n n g.. n. o n i fo o n. g i n n i i n, 0 J6N. F E fi. MhR. APh. MhY JUNE JJLY 6UG. 9P. OCT. NOV. DEC. 1981 Z VALUES INDICRTE RCTIVITY NUMBERS OUTSIDE THE RANGE OF THE PLOT STATION 11 X STATION l '2 = X STATION 13 Z STATION 14 = + STRTION 15

X STATION IS

=0 STRTION 17

D STATION 29

a ETRTION 29

t M

E E O E E E NM M E M E M M E E

Figure 20 NAINE YANdEt NS-9S RP FILTl.RS 7. 5 G E- 0 2 -- 6.00E-02i ce 4.50E-02-~ s ta N i 's i E { u cn 3 3.00E-02i N 'N t' E N \\\\ 1.50E-02i l l N -x ~,o.io og.iini o g.. .iiiiig . iiii.g.iiiii ogn i. .j iii. .g. 1o. .;...... ;.....g,n i...g.iii. q 0. JAN. FEB. MRR. RFK. MAY JUNE JULY RUG. St.P. OCT. NOV. DEC. 1981 Z VALUES INDICATE fiCTIVITY NdMBERS OUTSIDE THE RANGE OF THE PLOT STATION 11

X STRTION 12

= X STRTION 13 .:E STRTION 14 = + STATION 15 =X STATION 16

< STRTION 17

D]STRTION 28

o STATION 29

+

6 M M W M W W M M M M W6 m em W W W

j CONCENTRATION PCI/CUBTC METER I 0 00 8,.00 1,6 00 2,4.00 3,2.00 4,0.00 I L: ~D - Z~ 5 nrn : Z CD ~ C I -5 1 r-O 2 OJ 5 a : .~ ~ ~ p: Z 'U I PE ~ er CD'Tl T r- ~ l ~ r-3 -i Lb I m c-Z Z [ m - P1 ; CO v D c I Om 7 2 7~L: CT) C-w -i r: 7-7 --1 2 IM -7 7 2F $E FTi m o1. CO CO I 7 M ~T1 OIs F~ l Z 7: UJ O I 2 ^ C* E m: I [b R CO ---i Q b I, O 7 I4 I o; m-O.ji l I I - - _ _ _ _ _ _ _ _ _ _ _

Figure 22 ZR-95 IN AP FILTERS SAMPLES FROM WESTBORO 1981 TIMES E-3 o o. oo_ l cc L1J o H o u_ d_ r e U .-oo 8 3 U 8-4 x e ~ U Q-oa z d_ a v r -. wcr Z 8 s Z o-c4 g o Z Oo oo a u nin op o n o n p o n o ip o.io o p o,o.uio..uinio nio nio.o.o p o n o o pin o.ui nonoigoniu i JAN. FEB. H6R. GPR. MAY JUNE JULY RUG. SEP. OCT. NOV. DEC. 1981 TIME (MONTHS)

I Figure 23 CE-141 IN AP F IL TE.RS S AMPLES F ROM WESTBORO I 1981 t TIMES E-3 o a o_ PJ M L1J o H o W r O n co g . -i a o cw_ N A n' a Q_ o Z '? O m' w Cr M o W o Z g-L1J l O l zoo oo a o o n. n n o o o i o o o ii. o o o i.. o o n. i. o i n ii.. o o n i.. os o. g. A o.. n i. u... o g n o o n. F. o Jo i JAN. FEB. H6R. GPR. MAY JUNE JULT GUG. SEP. GCT. N0/. DEC. 1981 1 TIME (MONTHS} l

Figure 24 CE-144 IN AP FILTERS SAMPLES FROM WESTBORO 1981 TTMES E-3 8 o o_ CC LiJ o F-- o DJ E_ r m O l c-o O S D U 0-k N t U Q-oa Z O n e-. CC E S Z o-u.J U Z a i n u u n g u i n u n g o n n u i gi n. . o g u i n i o ii n i n u n g iii u n iii n n i n i o.u i g o n o i n g ni n u n p i.iiiv ig JRN. FEB. MAR. GPR. MAY JUNE JULY RUG-SEP. OCT. NOV. DEC. I'381 TIME (MONTHS 1 eamme ae e mW m as m e sus e aan me se a

rigure D RU-106 IN AP FIL TERS SAMPLES FROM WESTBORO 1981 TIMES E-3 8 a. n x L11 o O W c'_ E m O m 8 D U i N p i O Q-oa Z f. O Wc M o a Z y-w U Z O O Ua aa...a..r,.......i.........i.........p.................i.........i....-...i.;.....i.........,;.......p.....:., JRN. FEB-MAR. RPR-MRY JUNE JULY RUG. SEP. GCT. NOV. DEC-1991 TIME fMONTHS) e e aim sua m m mm aW m eem W m en sus a

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ragure 4s MN-54 IN AP FILTERS SRMPLES FROM WESTBORO 1981 TIMES E-3 i o '"lcf W H O LAJ 9 r er U ~ C o D w l U h ~ N i O l Q_ O Z 9~ O ~ W C M o D Z f-W U Z O O O I o l d 4.iin ogniiningo niosigioniinigiiiiiiiiig>>>>L iiigisiiiiiiigi i m i.igin uii, g i>>ui.ij G i i u i n g i i i i iu i g 3 J6N. FEB. M6R. GPR. H6Y JUNE JdLY AUG. LLP. OCT. NOV. DEC. j 1991 TIME (MONTHS) i

VII. ANALYSIS OF EtWIRONME!!TAL DATA The analysis of; environmental data may be divided into three sections: airborne radicactivity, waterborne radioactivity and direct exposure radiation measurerents. A discussion of each environmental media within these sections iI will follow: I 1.

Airborne, a.

Air Particulate Air monitoring stations are established at a total of nine locations. B Seven of these locations are indicators, while the remaining two are control stations. The air pumps at these locations operate continuously at a flow rate of approximately one cubic foot per minute, resulting in a weekly air sample of apprcximately 300 cubic meters. Airborne particulates are collected by passing the air through a fiber filter; these filters are collected weekly and held for at least 24 hours before being analyzed for gross beta activity to i allow for the decay of radon ar.d thoron daughter products. Weekly composite air filters from each location are analyzed quarterly for 5 gamma emitting nuclides. A significant increase in airborne gross beta activity was measured on all weekly air particulate filter samples submitted from indicator ano control locations during the first three quarters of 1981 (Figure 14). Gamma analysis performed quarterly on weekly composite filters showed detectable concentrations of fission products in indicator and control station samples. The highest airborne gross beta and fission product activity occurred during the spring and summer months when I intermixing of the stratosphere and troposhere takes placed causing radioactive debris in the stratosphere from weapons testing to be introduced in the troposhere. An additional control air sampling location was set up at our Environmental Laboratory in Westborough, Massachusetts. Air particulate samples analyzed from this location showed detectable levels of fission products with activity concentrationc which were not significantly different from the I sampling locations around Maine Yankee. 5 _ _ _ _ _ _ _ _

During 1981 increased airborne gross beta and fission product activity detected in indicator and control air sampling samples was due to f allout from weapons testing (see Section VI). b. Radioiodines Charcoal filters from nine air sampling stations were collected and analyzed weekly for I-131 activity. Concentrations of I-131 activity in both indicator and control station samples during 1981 were below minimum detectable levels. c. Milk I Milk samples were collected and analyzed monthly for Sr-89, Sr-90, low I level I-131 and gamma emitting radionuclides. During 1981, detectable levels of Sr-89 were measured in milk samples submitted from the indicator and control location during pasture season. This 4 radionuclide was also detected in mixed grass samples submitted from all six of our sampling locations, and additional milk samples submitted from five control locations in Maine also showed Sr-89 activity during the pasture season. This Sr-89 activity is related to I the Chinese weapons test discussed in Section VI. Detectable concentrations of Cs-137 and Sr-90 were measured in milk samples submitted from the indicator and control locations. The mean concentration of Cs-137 and Sr-90 in milk samples from the indicator location was greater by a factor of 2.5 and 3.7, respectively, than the control location. The higher concentration in indicator station samples has been noted for several years and is not related to Maine Yankee gaseous releases. Fbine Yankee measures Cs-137 and Sr-90 in 5 gaseous releases from the plant. Based on these measurements and models used from Regulatory Guide 1.09, the expected concentration of these radionuclides in milk from plant releases would be undetectable. I I --

An in-depth study of Cs-137 and Sr-90 levels in the environment was started in May of 1981 and continued over a four month period to identify the cause of different levels of Cs-137 and Sr-90 in milk. I The study used present milk sampling locations plus five additional f arms within 20 km of the plant. In addition to collection and analysis of milk, cattle feed and vegetation samples, in situ soil analysis was carried out at six f arms during 1980 and 1981. The results of the gamma in situ analysis of soil showed that naturally occurring K-40, Th-228 and U-238 plus man made Cs-137 and Nb-95 were detected. Ub-95 was only detected in the survey conducted during 1981 I and the concentration was not statistically different at all locations. This activity was related to weapons fallout during 1981. The lack of any plant-related gamma emitting nuclide and the fact that Cs-137 concentrations at all f arm locations were within the expected concentration in soil due to weapons testing, indicate that the Cs-137 levels in nilk were not related to the operation of Maine Yankee. I The special milk study showed that Cs-137 and Sr-90 concentrations in milk and vegetation samples varied from farm to f arm. The vegetation I samples collected f rom f arm locations showed Cs-137 and Sr-90 activity which ranged from 244 pCi/kg to below detectable levels and 850 pCi/kg to 11 pC1/kg, respectively. The primary results f rom this special study indicate that farming practices (amount of vegetation and type of vegetation that the cows are allowed to feed on) was the cause for large variation of Cs-137 and Sr-90 concentrations in milk. This can be further demonstrated by the fact that during 1981, Sr-89 activity due to f allout f rom weapons I testing and which is assumed to be evenly distributed, was measured in the indicator station milk samples by a factor of approximately two higher than the control location. d. Mixed Vegetation Mixed vegetation samples were collected twice during the growing I season from six mixed vegetation location listed in Section II. The vegetation consisted of mixed grasses and were analyzed for Sr-89, I Sr-90 and ga;.ma emitting nuclides. Detectable levels of Sr-89, Sr-90, Mn-54, Zr-95, Nb-95, Ru-103, Cs-137 and Ce-14l. were measured in samples submitted from indicator and control locations. The concentrations of these radionuclides in indicator station samples were not statistically different from the concentration measured in control station samples. I Since the above radionuclides were detected in control stations, and the fact that moet of these fission products were not detected in Maine Yankee gaseous releases, indicate the fission product activity measured in mixed grasses was related to f allout from weapons testing discussed in Section VI. e. Food and Garden Crops Samples of green leafy vegetables and potatoes were collected at I harvest time and analyzed for gamma emitting nuclides. Low level I-131 analyses were also performed on the leafy portion of the vegetables according to our Technical Specifications. The summary of analytical results show that Potassium-40, a naturally occurring radionuclide, was the only gamma emitter detected in food crops with concentrations above detectable levels. I f. Fresh Water Fif.sh water samples were collected from three indicator and one control station on a quarterly basis. These samples were anlayzed for tritium and gamma emitting nuclides. The results show that there were no gamma emitting nuclides detected in fresh water samples during 1981. A fresh water sample submitted from Montsweag Brook during the first quarter showed 11-3 concentration which was three times greater than the standard deviation (Environmental Laboratory criteria for a I detectable level). Since this 11-3 concentration was below the minimum detectable concentration for the analysis and that there were no other plant-related radionuclides detected, this result was considered to be a false positive measurement. I

g. Precipitation Precipitation samples were collected s.s analyzed for H-3 monthly during 1981. Tritium activity was detected in precipitatJon samples submitted f rom indicator and control location. The average 11-3 I concentration in indicator and control locations was not statistically different indicating the 11-3 activity was not related to plant release. The tritum activity measured was from natural production by cosmic ray interaction in the atmosphere plus production from detonation of thermonuclear weapons. Precipitation samples were not analyzed for the month of September due to the un-intentional disposal of these samples. Corrective actions were taken so this should not occur again. There were no abnormal I tritium releases during this period. I I I I lE 1l I I I E I

2. Waterborne Pathway a. Estuary Water Estuary water was collected and analyzed monthly for gamma emitting nuclides and quarterly for 11-3 activity. During 1981, Potassium-40, a naturally occurring radionuclide, was the only gamma emitter detected I with concentratio.is abeve detectable levels. Tritium activity was detected in samples collected from indicator and control locations. Station 11, an indicator location, showed the highest 11-3 c onc ent ra tion s. This station is located onsita and the composite samples collected from this location are taken from the discharge forebay which is located before the discharge diffuser. The samples taken f rom this area are essentially undiluted and do not represent I the tritium concentration once it is discharged through the diffuser into the back river. When a dilution factor of 10 is applied, due to I the operation of the diffuser, the concentration of this allowable release level of 11-3 is further reduced in the environment. I b. Aquatic Vegetation I During the fourth quarter of 1980, aquatic vegetation samples collected from indicator and control locations showed detectable I concentrations of fission products (Figures 28 to 31). The fission products measured in aquatic vegetation correlated with the arrival of fresh fallout from the Chinese nuclear weapons test conducted in October, 1980. During the first t.hree quarters of 1981 these fission products were still being measured in aquatic vegetation samples j collected f rom indicator and control locations. The activity in aquatic vegetation was due to the f resh f allout discussed above and additional weapons fallout measured in air particulate samples during the spring and summar months. No plant-related activity was detected I in aquatic vegetation during 1981. I I l l Figure 28 MAINE YANXFE ff.-144 ROURTIC VEC 2.00Ev02-1.60E+02 1.20E +02 -~: i E -w 2 8 00E+01-~ 1 o a s^ 4.00E*01 i 0- ~ ~ i i i i i i i.. g i..... g i...... g........ ;,,,,,,,,, ;........, j,,,,,,,,, ;,,,,,, '.,,,,, S E P. JAN. FES. MAR. GPR. MAY JUNE JULY AUG OCT. NOV. DEC. 1991 Z VALUES INDICATE ACTIVITY NUMBERS OUTSIDE THE RANC,E OF THE PLOT STATION 11

X STATION 12 X STATION 23 Z

W W W E E M E E E E E E E E E E

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X STRTION 12

X ETRTION 23

.: Z

Figure 30 MAINE YANKEF. RU-103 ROURTIC VED.

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X STAT ION 12

x trATION 23 2E W

W W W W M M W W W W W W W W W W W W

M ao~Ra Es 1 2 3 4 5 0 0 0 0 0 0 0 0 0 0 0 M E E E E E + + + + 0 0 0 0 0 2 2 ? 2 2 - ~____._ i ___.... - ~_:____i_____: ~- [.: M M S Z n T J 6 A V Ro I T A Ni N I L n E M O U n N E g Y S i R Fn N 1 E d n 1 I S i E N M D o t = I j 5 i C i X A M. G T ho M E Rn T i A n T R g C I u O T G i I F i N M N V hi i B I n 1 T 2 i 9 Y g 5 n M M = N i hi U XM Yn 6 F B i 0 i S n 0 g E u T g R R r M A S J. T e T Ju I O Ni C 3 I O 1 En 1 U N 9 i V T M S 8 j f 2 1 i D I J. 3 D Jo E LYn = i M T i ZH i E i R. Uo R A Gi n M N i G i F j o L O E in M i F P o T H p E Oi Cn M P T i L .o C i T i p No M O u V.n u M i u O. Ei Cn .u i M i 'mA M

I I c. Marine Organisms Fish, crabs, lobsters and mussels were collected and analyzed for gamma emitting nuclides during 1981. Crabs and lobster are categorized under the media arthropods, while mussels are under shellfish in cur summary tables in Section III. The result of this gamma analysis shows that K-40, a naturally occurring radionuclide, was the only detectsble gamma emitter in marine organisms. Fish samples are aormally collected quarterly f rom two indicator and one control location. During 1981, fish samples were only obtainable from tu locations in the second quarter. Trawling and the set up of gillnets are used for the collection of the fish samples. During the first, third and fourth quarters of 1981 these two methods failed to collect enough fish samples, so that an analysis of fish could not be pe rf o rmed. I d. Sediment I Detectable levels of man-made radionuclides due to plant operation and weapons testing were mesured in sediment samples collected during May and November. Co-60, Cs-137, and Cs-134 were measured in sediment samples collected f rom Stations 15 and 16. These radionuclides in I sediment are related to early plant operation, when routine liquid effluents from the plant were discharged in this area. Due to poor dif fusion, a discharge diffuser was installed and liquid ef fluents is now discharged into the back river where there is adequate mixing. Concentrations of Co-60 and Cs-134 were below detectable levels at Station 18, which is located on the east side of Bailey Cove near the present diffuser. The activity detected in Stations 15 and 16, located on the west side I of Bailey Cove, 19 Jac to residual activity from an old liquid releases. Using Regulatory Guide 1.109 (Reference 1 ) and the average concentration of Co-60, Cs-137 and Cs-134 measured in sediment, the total body dose to a person who was to work in this area for 2400 hr/yr would be approximately 0.3 mrem. This is a small fraction of the 100 mrem /yr dose received from natural background. ---

I I 3. Direct Radiation I Direct gamma radiation exposure was determined f rom the use of lithium fluoride thermoluminescent dosimeters (TLD's). A TLD packet consisting of I five lithium fluoride chips was placed at 17 site boundaries, offsite and control locations listed in Section II. The 1981 data show similar trends as that of previous years, and Table 6 indicates that the average exposure rate at the site boundary and offsite indicator locations was not statistically different than the average exposure rate measured at the control locations. The average TLD exposure rate measured at offsite indicator locations was 1 microrem lower than the exposure rate at the I control locations, indicating that there were no detectable increases in direct gamma radiation to of f site locations due to the operation of !!aine Yankee (Table 5). I I I I I ' I l lI i I 'I l -

I Table 4 1981 Average TLD Exposures Microrem/hr I TL 1 Zone I 10.9 TL 2 Zone I 11.4 TL 3 Zone I 10.6 TL 4 Zone I 11.8 I TL 5 Zone I 11.0 TL 6 Zone I 11.5 TL 7 Zone I 10.8 TL 8 Restricted Boundary >.9 TL 9 Restricted Boundary 13.4 TL 10 Restricted Boundary 12.1 TL 11 Restricted Boundary 14.3 TL 12 Restricted Baundary 14.0 TL 13 Restricted Boundary 9.8 I TL 14 Restricted Boundary 12.0 TL 15 Restricted Boundary 10.7 TL 16 Zone II 12.7 TL 17 Zone II 12.0 Average Zone I 11.1 Microrem/hr 1 0.5 Average Zone II 12.4 !!icrorem/hr t 1.0 I I I..-.

I Table 5 I Offsite Environmental Radiological Monitoring Summary of Analyses for the Period 1/6/81 to 1/5/82 TLD - Direct Radia tion Units - Microrem Per Hour Analyses Lower Limit All Indicator Highest Control I Performed of Stations Station Stations (total Detection (mean + 1 signa (mean + 1 sigma (mean + 1 sigma I number) (LLD) range) range) range) TLD (204) 0.3 (11.6 + 1.4) 11(14.3 + 1.6) (12.4 + 0.5) (6.7 to 16.8) (10.6 to 16.8) (8.6 to 14.6) I 4 I I I I I I I g -e1

I VIII. ENVIR0! MENTAL DOSIMETRY The mean concentration of 17dionuclides having activity concentration greater than lower limit of detection values in indicator anc control station samples of air particulate filters, charcoal filters, drinking water, seafood, I milk and food crops were used to calculate total body doses to adults. The average individuals' usage factors were taken from U.S. URC Regulatory Guide 1.109 (October 1977). These usage factors are: 8000 M /yr of inhaled air 3701/yr of drinking water 7.9 Kg/yr of seafood I 1101/yr of milk 190 Kg/yr of food products The product of the mean radionuclide concentration and the usage factor yicids the yearly radionuclide intake. The dose is calculated by using the dose conversion f actors contained in U.S. NRC Regulatory Guide 1.109. In addition, external whole body doses were measured with TLD's placed in indicator and control stations. Table 7 summarizes the environmental doses f rom mean radionuclide concentrations greater than detectable levels in indicator and control station samples. The whole body dose from injestion is almost entirely due to the contribution of Sr-90 in milk. As mentioned in the milk section, this activity is not related to plant gaseous releases. TLD measurements indicate that nearby residents did not receive any I measurable dose f rom plant operation. The background external doses were measured to be 7 mrem per year higher than indicator stations, showing that variation in the natural environmental dose rate is greater than any contributions from the plant. I I I I Table (; Summary of Environmental Radiation Doses (mrem /yr) Sou rce Plant Environs

Background

Inhalation 3.5 x 10-3 3.5 x 10~3 Seafood Food Crops Milk 3.0 0.8 Water 8.8 x 10-3 TLD 101.6 108.6 Total 104.6 109.5

All concentrations below detectable levels I

I I I

I IX. CONCLUSION During 1981, our radiological environmental monitoring program conducted in Maine Yankee's offsite environment show.ed that, in general, the major radionuclides measured in environmental media were the naturally occurring and fallout fission products from atmospheric nuclear testing. There was no significant increase in radioactivity in the environment due to I the operation of Maine Yankee. The levels of radioactive materials in the environment indicate that public intake is less than one percen,t of those recommended in Appendix B, Table II, Part 20 of the Code of Federal Regulations. ) I I I I - 9e.-

I 1 ) I X, RETERDJCE I

1. U.S. NRC Regulatory Guide 1.109, " Calculation of Annual Doses to ?hn frm
I Routine Peleases of Peactor Effluents for the Purpose of Evaluating Otrpliance with 10CFR50", Iqpendix I,1977.

I I .I I I ' I I l i .}}

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