ML20079M981

Response to NUMARC Survey Re Approximate Number & Cause for Most Notable Fish Mortalities at Pilgrim Nuclear Station for Period of 1973-1989

ML20079M981
Person / Time
Site:	Pilgrim
Issue date:	12/31/1989
From:	BOSTON EDISON CO.
To:
References
RTR-NUREG-1437 NUDOCS 9111110027
Download: ML20079M981 (18)

Text

_ _ _ _ _ _ _ _ _ _ _ - _ _ - _ _ . _ _ _ _ _ _ _ .

Table l, Approximate Number and Cause for Most Notable fish Mortalities at Pilgrim Nuclear Power Station, 1973-1989 Date . Species Number Caus April 9-19, 1973 Atlantic Menhaden 43,000 Gas Subble Disease August / September, 1973 Clupelds 1,600 Impingement April 2-15, 1975 Atlantic Menhaden 5,000 Gas Bubble Disease August 2, 1975 Atlantic Henhaden 3,000 Thirmal Stress -

August 5, 1976 Alewife 1,900 Impingement November 23-28, 1976 Atlantic Herring 10,200 Impingement August 21-25, 1978 Clupelds 2,300 Thermal Stress December 11-29, 1978 Rainbow Smelt 6,200 Impingement March / April, 1979 Atlantic Silverside 1,100 Impingement September ?.3-24, 1981 Atlantic Silverside 6,048 Impingement (

'P;\q;a, 4c d a h urees &ztchn=t 5 3

v11111o027 091231 l PDR NUREO 1437 C PDR

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

Table 1. Ichthyoplankton densitiat, per 100 n) of water, which :eached the "unusaally abundant"* 1evel in PSPS entrainment samples, 1980-1989.

" Unusually abundant" Previcus high Species Month density (vear) density fyear)

EGG 5 Brevoortia tyrannus June 74.2 (1980) 6.2 (1978)

September 1961.9 (1982) 1.4 (1979) 1065.8 (1982) " "

October 37.6 (1980) 0.2 (1978)

-* Enchelvoous-Urochicis-Pep [ilus September 71.3 (1980) 30.1 (1979)

Urochvcis son. Sentamba* 152." (19*0) 2 2 . 2 '. '. ? ? S )

Labrid-Limanda & labrid July 12917.0 (1981) B116.3 (1975)

Scomber scombrus May 15261.3 (1985) 572.0 (1980) 1457.6 (1985) " "

LARVAE Brevoortia tyrannus June 7.1 (1981) 4.2 (1980) 495.9 (1981) " "

34.7 (1981) " "

October 11.7 (1980) 1.8 (1976)

November 24.3 (1980) 3.2 (1978)

Enchelyopus cimbrius- August 204.6 (1983) 36.0 (1980)

Urophycis spp. September 105.6 1984) 22.3 (1981)

' Tautogolabrus adspersus June 624.5 981) 378.8 (1977)

July 296.5 (1980) .138.5-(1974) 2162.5 (1981) 296.5 (1980)

September 20.3 (1980) 1,5 (1975)- -

Tautor,a onitis August 21.6 (1984) 4.1 (1974)

September 9.2 (1980) 4.8 (1975)

Phelic runnellus February 14.6 (1964) 7.4-(1975) 13.B (1984) " "

47.5 (1985) 19.6 (1984)

March 70.2 (1980) 36.9 (1975) 210.5 (1984) 70.2 (1980)

'15.2 (1984) " "

Apr;. 74.0.(1964) 12.1 (1977) 74.7 (1982) " "

34.0 (1952) " "

22.4 (1982) '

23.5 s1952) ' "

5- g ".WW $ y V.* - -- -- e"

l Table 2.(continued)-

" Unusually abundant" Previous high  !

5pecies Month density (vear) density (year)

-LARVAE-.(continued)

A=odyte s sp. January 31.1 (1980) 13.5 (1975) 104.4 (1985) 31.1 (1980)

-scomber scombrus J te 2700.0 (1981 120.0 (1975)

Myoxocephalus spp. February 79,2 (1988) 37.4 (1985)

March 153.6 (1980) 97.0 (1975) 308.3 (1988) 188.7 (1986)

April 303.6 (1982) 53.1 (1981)

• " Unusually abundant" van defined as 50% greater than the previous high density observed during the saa.e month 1975-1987.

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. hgi e s t t M 1 at sat t c ' rise 1 ogp i mq , ~-

C e t l < tie t s t.etr C.,vwr aviseM t y et tret tent to t h e t %er net e f f twent , Eleni t t< eat sostive etsnienc e et s seier it;e 4M trat tons of tese t s,e terrelatues to taen 1% the eres et the therest es trect tun are tvef eto; omher oe eowri en 19tu te apart fishersen ems enret tonet therset t eeding. 4 %s t (mteeg war ) em on wn t*4 si the var ietait t ty tn catch rete tener in 1781 thsv4 out put is tenetitiet, ius ten-a m te empt eined tw verist P m versely this sersentf otos r apac i t y), swegestir.g a f e s't in a Digh rist sees r t ent ' t oe# .

r ec erit dec i t re in n ec e4 with the setent tel f or s t ect e 6 t e . (PW f r ee idas - ever fishtag, therest leS9 det t erwd everet t. atress, ges taadite tfisease, eN eesesure te chamnst 8.

.... ....t....t.r.6.-.

tie twe en C+'Ut t er t eat eg e vt f e e l

..{..... .-. e. . .g . . . - . .

overall char teig the wtage decl%rwd aperationet outim.t. e ed eemeined to. 6a 1699,

_ . ~. i t _ ._t-......_ .. e et.rected to the plant cancherge -...._.t_..n .. t h _ t ... t . . f t _t _ .

c urrent . the sentrei aste in IGtk/1947; let?) there was en omtrent in the disenerse en 1961, 1981, suit in stetrisution et 19% e<d tre& red turrent ). sweer ewey from the dis-5.sne.eist sor e swowe seert en thorpe ternuaed) asne end the contret eree tn 1969 tensord the tantret gard.

Cr*Wentret teras of str4 sed taats in Only 2 ef the years altee 1919, the vit tat ty of PitFI t i8thd to the As best othebit e pref er*

~

coo 4 6ng water diacherge, tdwelith eM bett tsere ftet erEs lee deDwent etter, sigested ty divers in the 6 sh es PsIPS effluent, environe of P#el- 1966/1984, their sheence freie toe tan were seen en %781 erd 1949 enving ette in 1984 ored 1964 es in emait schoots f ressent tag emersetty related to the the eischerte eres, Only e low discherte fleet thJring the f ee t ess were seen $n 1986 87, autete.

R et t sur wey with the plant ogwret tne, the threr 1,000 toiwef tsis ord 1%0*

own f a t ' et aset mes proveri to t,e en Posser Pt ent kes had a striped best were sevent tur a t t ' ec t i ve f ee'sieg gr osse s erv en-engters et Ptiet in 1953; eral neskt6ve ef fect en the t ret mg spor t f tsk f or en esteessed 2,200 bluet 6th erst eleost 600 sport fisheng ett ainty period of Stee in e locatien state Potet; hensever, the attrec*

to there. tags in 1964 ye tess erwl enty tien et gene fish to the e seetn russer of Muef tsh dischergw teicreases the were sought in 1984 Cetches setenttet for everfiehtng wer e estremely new 19M 1988 cur 6ng the plant htege that e leset stect ord for f 6sh 3)lle Wie btgh teet*retide showed a slight n4wwieg in end gee essersette et ten. _

1969 et ene ptent insteased 41uellasileg was pre tented in aperettenen stetwo, inte sevement 1941 by the pressere of the hot weter discherte.

' l-sout ioir-e stow ut ene e ee ment with i ts he est -

{f .eter ero oeenged the*w.et appeer s seene cetues in e, tatete aessessed in 1% arwa 19'ti, thereacee f 6 nits 4 easteme t o.e a ee- ,e, e t .es .- in the gneste, egeec tet ty tn

.I we, e e_ in w. it.e . e t,,e ty of it e tat ene steerwe te opeet eessul regsen. t.ut sc, en IG4F, tut own in sc r een i.et t , es e osanf or t

)M4 erd h69 te plant entressent, ispenoement ed therent bactwesh ef fecte,

e.i s t at, u tnter e t m ews** e.ir , ad the n ,, em ei, e, e. s me c .

a blewwtet es stritut ten of neweer ei.o.e .unieme hwtssou treeets (p6ets) of f ( Oe'ge i.enet opi g erw-e s tan. t et.n.e .umw e es, winne u i

.ee f ossi et t he a se ve e l t eric e

1. itsreter here en tletent stet ten tn ivh Pet met not at ref erence weteus surveal-f ase f or ta8t-1Hl.199F 19M tente sites trce 4941 tag g i r* 19e 6( CPut in tae

'fi scherge et te etteede 3 th at 4teret terwt wears) tut were s tee t et I r% /1986 ' 1989 la et (he reierers' e ttrE ei 4en. l t IM, we f etF4f (PW ($

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o e. ; t % i s er t ,3 149 lett ete et FG* l, e i &l te'ed 4 r Mant it res t f i$$ te i% h i t s i t uo t t tei het (l e 99s t r Fgupet . het tagergt tet t glitt - 4 tot egg-i nd tM e t e t ogste te t etil l e t f pf 'f eet t ee

('elet t eth 6%ellef ed eleth let w = th 1.htt tet I f DWL q tot eet f e- ' M et t , f f

• ti AN f eette tu t 4194144 4tkvet ) shish emdir - d a t et in t h e t at *4 e *** 1781 t ta ept stat li f y to

1. 1'll y et tPest Ishe9t ie f 4 46

• weve' , f rirtes preg 18 e ' T

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tw isitems w &f e' (' fmputer . 1 %e e s t pet ta t*e intent e

• t3 bea tesem e6 t ec t s i e ' 99 4 % f4A'te f e t 4841t% 1 et at e

• l'se othe r tilee stagit ed 0 t F

' t eJt11F F wet % ft the IMt ete. IW' 1%II we $cnXt1 that tJs-4t eht i tilt l e

• ee r $m f'ete+ $ 94 4"W I l e r eiftt et t 4 etRe19e efe t e

++t the t ritat e the'91el its st'r teg SW M t .ete r ; le 1948' tel t ,

L H.% t e f MI ' f e' 6 84 t t ts/p There tev to e (twe=ef t tort to t wees ;atch f ete et j eget ( Cet t e r A 5 8 9M ilf e"t mege t i ve ,

f'te% (pen lee wetet de tChee se e vt oes t ertewl ever et t on the tissfy t ar t e n el l 86 (' 9 C fi) tel legel l titMi ef tettM tete in the eroe em 1V% f ress the 198% taggag f or e+ esse t t h e r1he t detttW ee e?ee- 6 twe l setj wet the leasett veleje t spot i19 seto t eilel test 4t er f et the %$ < gees 4139,3 (etgh rete t% t v e t oget t ed irg f ett e+1 oge 64 4fs 1945 toy es te f er 9%*) 198l, le8% .

46*ot 10% , ta le% (9kt wet the highest et the entire t at weg enJt 8e Mted 4 9 199 ' t o e t e re t o rnent i pi t o 19% . Am coleg petsett est in 1%B4 59, f ittelved $st In SeJetMt 1991, etej wet eper at tg 44 Geo icir teert, @tet ved let Get e44er telvr et sers F elid t ed 9n64 718 4 e'tt et et teer 100% g epag t t y ; esa t et tVRL 16 1964, 91sP1 had fine lh levetal met ewor thy iPE 6de**tt det tkkbee t rir t ent s t esgupr e t tdr et $m (P) discherte were theroes t apgerewest te itense el G40 in item et Purs, enesetsit t eet Osseete (Ge0! at high as 30.4 C e4 dhetelved r,ac , 1 hit een eine t=e s ete et 41.000 erst %,000 *Li t se*****

tor toessit et Perl. geese wer e arrettat ur et ed ( e t tf ogeci f raise 1966 11M , et everess in the dietherte im ?9fI e'91 e ergen Saturet tert levett Perged if f'I, f e6494 t ivg t y . St r t teed en.st le t f reen 112 11911. Art ettieusteet M0 scheet tric le the ditchevgo were

$ l t eer e ssies erst 300 }veerit t e son- etit tened in este left CBD rea hetfeet were attileted with CSC in sevetely strett er till landtight et the dietherte terien; flth were through tait t eeted 46stt ept IBi li t y to Stf ettet3, ItAt enttal 4 t y, afi 6th weg deteele pe ye estet tory tith e et tdttisp likelf. Det FtDt ev e@eNed. Petie*M in the bested d'tth ePle .

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E E U k O 'M M W= Ammi I n h i,1. 9. iillM M A R Y OF IMPACTS OF PNPS ON DENTHIC COMMUNITIES.

+=..:=--m.~..~.--..- --_-------: - --== ~ - -

==-r,:-- - _-

h e is- h $"$

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. . ar... . . e t ,n e .s w a e Et f act s 1981-1989 Comme.-nt s

.metat.eate sp. s . . Effluent station reeks last relaties tf flaneet station ranked second im $ outages dasing 1984 and 1986 thresugts early r ..aea t suctwes. t o sof erence st at imms, indicating

. s u. n c, m eet 1985 and first in meet and 1989 resulted in increa>es is species tapect f rom ISPS cooling water Septee6.or 1986. sgmcies althness richness values at th af flu mt station.

,lischarge, declined from spring to fall 1985. Fluctuatlag power out put destabilized Effluent station smoked last la conditions and psolonged pioieer state, 198 7 and 198 8. Effluent station introducing new species at Effluent.

santed interam-liate in mach and Species richness in 1987 was low, September 1989. amarently t=caisse of ca ecui sting water

~

pug activity. Sp-cies richsess has been teen rising steadily since Poerch 1987.

A pron (Aing values s.co at reference st ationa in Septender lost and in 1989.

len<. : e y m3 &t estable pat term oeerall, so shage is e esponse to manisasm Relat ious ranks and degree of difference (1988, 198 M F) er aeriammi (1983, betueen the reference end Etflueet 1985) output. stations haee be+a inconsastent oeer the years of th.is st udy, indacating abseece of a anter;t able ef fect en f aunal decsities at the tiflancent st et san.

. . - ~ . _ _ _ _

s s=w; t ees Drominant species relatteoly coastmat Compositicus of dominant spectos et Fifteen specnes taaec <h t re n nve a ha occurrence at all three stations, mated all 3 all staticers unaf fected f rom 198 3 to stations throwghout progree, r ega r dles s eahibating no impact from PSPS. 1989 of season and year. Im 1984, considerable increase in Mg ethlis cbsereed at the Effluent. subetantant tut amerplan et decrease free spring to fall at the refarence stations.

ipecies Beforence stations ethibit liigber Era signsificant ciasryes in vanha of Da ve r s it y species diversity than the tifluent Relatively stable da versity ealues et diversity anoog stations as a result station, indicating ditf arence ese of flisetaating power fsom 198 3 to the Ef flueest station indica' e stable cweditioen (i.e., sustaimed difference) to ISPS operations. 1989. with regard to this parametre.

m -mw.-i.. +hwhLEds mm a

J. TAllLE 9. SilMMAl1Y OF IMPACTS OF PNPS ON BCNTHIC COMMUNITIES

( Con t. i nu ed ) _ _.

- - ..__n.-

.t ta tv IMPS 1981-1999 Canmum-nt s e . og unent 0atameter Rffacts a ve nessures of Beference stations more similar to Reference stations costlaued to Cleaster analysee reinsorce e ontent son Samilasity one another than to the af flueet exhibit hiper sim;1arity with one that ef fect of PfrPS is on si twkmansat

r. nasal another than erith tifluent station, species at the Ef fluent. tagged recove.ey st tutie s station, ladicating ispect from PttPS operations. evee draring periods of high potential of f aunal coe==ities evi&e t in 1917.

frontin e ft recovery at the Effluent statlee Recovery alperant la ",epteeter tsee, estil 1986. la 1987, similarity Altboisgh the outage eeded in early 1969 between reference stations was egnal recovery was still apparent am 1949 to that betweee Efflueet and both reference stations. Im 1988, all staticas simlier ty septent ee he in part to abundance of psytilus e A116s.

In 1989, similarity was high between the reference stations la spring and between the Effluent station and 4

Masoest Point statice la fall.

outages of 1964 amt 19tbat ugenoid Effluent algal commamstnes. uniske the comune s ty Several species indicative of umru

t. mans rative indJcater species irypothesis. faunal communities, are di tnequishable Algat twscragtson.s habitats have become establimbed at f arm ref erence statsoes tv .ahbeinant stoties the Effluent station, indicating Crocilaria tikwehire and taminaria aesdmes ef the comansiat.ses, ispect f rce PerPS eperatiens. spp. both respond ta naeiamm and mini == oestput of PRPS. De G.

tikeshise present f res 19f 6-Jee j

19 9. 3. e n.ani.e toer,.ored ..

September and Deceed.er 1989.

so significant change in typical coemmanity everlep in ti:;atee e retetteelr N Eaiaty Greater commanity overlsp betoness stable impact et tbo Effluen* e oquit swa 4

reference stations than betweens response to ITPS noted f ree 1981 to i thr t ap afflueet and referseco stations, 1986. Since fall 1941 overlap periods greater than !? eorths for indleating impact fras PIEPS between Effluent and reference recoverj. overlap ancrease in ";ept ead-r statleens increased. la Merch and 1997 may indicate begineia< recovery.

cperations. aseovery e,ideot in 1988. Although the September 1989 overlep was higbest

• . between the two reference stations. onstage ended in early 1989 rerow ary stall evidmet.

Algal biomass unaf fected ter 1984 and Algal baceass categottes, t *presentiwg A 1 53 pattern evident in terre of &minant algal components. do not esoe m relative eigat bionams sareg all 19tb48 ourtages. Biomass ebc1&oed j substestially since 1998. euhibit a <het e 1able impac* f rom twr1 three stations.

~~

i ..

Dermed d and stuited elgal sanes tagged recovery at the af fluent acute A legged vessusase as logavl gnwee the ryu l a r a r s ,e Amst e estructive nature of' the .ti. charge an

!apad Zone created by effluent discharge. impact sene is response to outeses fransect la 1984 and 19tb88 Soces ill- these sones. scouring cou .ed key survey defined after .9une 1987, so sones cirmalating water gav ha . great er ef ted than elownted water teeges etnam an detected in 1988. A desuded same

] reappeared la Septester and 31.cester deauhd area of acinta impe i sone.

1989.

.=.=--:-1= = raser ,

.-_____a_

% ..'.~% .A~. . ~ wn.

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'3ble 5. MDingement Rates Per Hour, Day ar.d fear For All T'snes Collected f rom Filgrim Stati n Intake Screens During 1973-1989, Assuming 1001 0peration of Pilgrim Unit 1*

Dominant Spectos g Year Rate /Hr. Rate / Day Rate / Year (Rate / Year) p 1973 1.41 33.89 12,371 Clupeids" (7,473) -

1974 0.58 13.85 5,056 Clupeids" 1975 0.19 4.54 1,659 (4,542) g Atlantic silverside P (702) 1976 6.67 160.17 58,461 Atlantic herring (45,062) 1977 1,06 25.44 9,286 l Atlantic silverside (2,735) 1978 4.04 97.03 35,416 Rainbcw smelt (29,357)

[

r 1979 3.24 77.69 28,280 Atlantic silverside (20,733) 1980 0.66 15.78 5,769 Cunner 1981 (1.683) 10.02 240.42 87,752 Atlantic silverside (83,346) 1982 0.93 22.39 8,173 Atlantic silverside '

(1,696) 1983 0.57 '3.65 4,983 Atlantic silverstae 3 1984+ 0.13 3.13 1,143 (1,114) R Atlantic silverside (185) 1985 1.14 27.46 10,022 Atlantic silverside (3,278) '

1986 1.26 30.34 11.075 Atlantic herring (3,760) 1987++ 0.28 6.74 2,460 Rainbow smelt (682) 1988+++ 0.27 6.48 2,372 Atlantic silverside (586) 1989 0.80 19.30 7,045 Atlantic silverside (1,701)

Means 1.96 46.98 17,149 p

• Rates have been rounded to significant figures.

" Herrings (clupeids) identified as a general category ir. 1973 and 1974 consisted of alewife, blueback herring and Atlantic menhaden. ~

+No CWS cumps were in operation 29 March - 13 August 1984.

++No CWS pumps were in operation 18 Februan - 8 SeDtemer 1987.

.++No CWS comes were in 0;eration 14 Apri' - 5 June 1988.

p

Table (o.  :.stimated total angler trips, fishing ef fort, catch ,

(number), and combined catch rate for all finfish species comprising the recreational fishery at the Pilgrim Station Shorefront, 1973-1975, 1983 and 1985.

No. oz Effort Pooled Caten Year aneler trips (hours) catch rate (fish /hr) 0901 12451 2181 0.17 1973* '

10135 19906 4129 0.21 1974 5084 9048 3022 0.33 1975 5541 10837 4929 0.45 1983*'

5664 10963 7151 0.65

'1985*

63205 21412 0.34 Total 32325 t

• Abbreviated survey' period

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!' I GUlt a: 1 . ;REA OF DENUDED AND STUNTED ZONES IN THE VICIfi1TY OF THE PNPS EFFLUENT CANAL PLOTTED WITH THE MONTDLY PNPS CAPACITY FACTOR (MDC). NO AREA MEASUREMENTS WERE MADE IN SEPTEMBER AND DECEMBER 1987, 1988, AND MARCII AND l

JUtJE 1989 BECAUSE OF LACK OF DEFI*iITIVE DEMARCATIONS OF DENUDED AND STUNTED ZONES.

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FigureA.- Mean monthly densities per 100 m'.of water in the PNPS discharge canal for the eight numerically dominant egg species and total eggs, 1989 (dashed

-line). Solid-lines encompassing shaded area show high.and low values over the 1975-1988 period.

Brevoortia tyrannus Eggmber Erdmbrus Gadidae-Glyetocechalug Prionotus spp.

Enchelyonus-Urophycis Paralichthys-Sconhthalmus

• Peprilus Hinnoclossoides platessoides Labridae-timanda Total' eggs i

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Figure 2 (Cont.)

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BREVC 39 A T RANNUS GADIDAE-GLYPTOCEPHALUS L3GS EGGS g

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