ML19220B406

Ack Ommission of Matl from Draft Suppl to Fes.Forwards App C Which Will Appear as App D to Fes

ML19220B406
Person / Time
Site:	Crane
Issue date:	08/04/1976
From:	Norris J Office of Nuclear Reactor Regulation
To:	Bettenhauser L ENVIRONMENTAL PROTECTION AGENCY
References
NUDOCS 7904250696
Download: ML19220B406 (3)

Text

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DISTRIBUTION:

j ocket File (ENVIRON)

DSE Reading EP-3 Reading WRegan/JNorris August 4, 1976 MDuncan Docket No. 50-320 Mr. Lee Bettenhausen Mail Stop 3AH30 Envirornental Protection Agency 6th and Walnut Streets Philadelphia, Pennsylvania 19106

Dear Mr. Bettenhausen:

Thank you for calling our attention to the fact that Appendix C to the Draft Supplement to the Final Environmental Statement for Three Mile Island Nuclear Station, Unit 2 referenced on page 5-8 has been inadverte'itly cuitted frca the document. Enclosed is one copy cf the intended Appendix C which will appear in our final statement as Apperdix D to the above mentioned document.

Sincerely.

'Crigin!SIECBd DY lan A.Nctris -

Jan A. Norris. Project Manager Envircrraental Projects Branch 3 Division of Site Safety and Envimroental Analysis

Enclosure:

As stated CLv 79042506%

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C-NEPA FO?C ATIO:; CC E A55E55tFMT Pr:

'. ion d:sc cc: itments a ? calc;12'sl for all individuals living within 50 =ile; of th2 4

i craiayinq tqe same modils usad for individual do:e: (:ec Regulatory Guida 1.109). In a:

• n ulati:n d:ses associated with th2 etpcrt of f00f cr:. s prod,ced within the 50.nila e ::rc: : e-ic and h dr s;h2ric trans;srt of the acro Sile ef flu;.n cp ies, such r:

=

3 as :;.'

-v.,,

tritium, and car::n-l t, have been considered.

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.- ~'a : ".n i n ~0 miles Of tne reactor facility, ex;osur?s to these ef fluents are calcu-

. i-- - - 1:r: ;he-i: direersica redels in Regulatory Guide 1.111 and the dose cadals ce:

e; - :e::i:15.1 and Re;ulatory Guide 1.109. Seyend 53 miles, and until the effluent r+ :n2: tot Part esstern corner of the Unitad States, it is assur.ed that all the noble gases are

< 2 - 2:.ni.ecly in t..e lowe:t 1000 meters of the atro30here. Ce:ay in transit was also e nd this point, noble gases having a half-life greater than one year (e.g., Kr-35)

;;> 21 r

s cct?ietely cix in the tecposphera of the world with r.o removal c2chanis.ms cperating.

tre iss/

1 Tc fer

,;3::heric air bat.:32n the northern and southarn hemispheres, altnough inhibited by sir: ca;:

, in the equat: rial region, is considered to yield a hemisphere everaga trepospheric rr te :t. ira cf at:ut two years with respect t3 hemispharic nixing. Since this tice constcnt is : its sPert with respect to tnr ex;e:ted mid-point of plant life (15 years), mixing in toth hr.;*': ras can be assemed for evaluations ever the life of the nuclear facility. This addi-

Jati

n case co mi trent to the U. 5. population was also evaluated.

'.. - - e.,f Particulates Released to the "troi.chere Effi.:nt nuclicas in this category d2pasit onto the ground as the ef fluent coves d:wnwind, rhich ccc t.mL; sly redu:es the concentration rer=inir.g in the plt r?.

Uithia 50 miles of th? facility,

.e es;csiticn modal in Regulatcry Guide 1.111 was used in conjunction >;ith the dese redels in Fe ;!st:ry Cuide 1.109. Site-spezific data cone:rning produ:tien, transport and consumption of f::d: ;:itain 50 cilcs of the re:ctors were used. Eeyend 50 riles, the depositica todel was

. ext = ::d until no effluent remained in the plure. Excess f :d r.ot consumed within the 504:lla dis::mce :s accouqted f ar, and cdditi3nal fccd pr0du: tion ard conscrotion representative af the eas+ern half of the country were 2:st.:ad. Ooses obtain2d in this F. ann:r were then as ;.;ed ta b2 re:21;cd by the nut 00r o' individccis living within the direction sector and distenca describ3d aty;?.

The po ulation d ity in the sector is taken to be representative of L'.2 eastern Unite 1 5t:ter, rhien is ab ct li - eople p?r square mile.

Ce nn 11 and Tri'ium Peleased to the Atmose'ere C:rt:n-!! end tritita were assar?d to disperse without de;o:iticn in the sare rir.r.er as kryoten-55

- lard. H.,1ver, they do ir.ter3ct with the oceans. ~his causas tha c rbon-14 to be ; coved

's N atos.,"eric residen:2 tire of fcur to six years with tb: cceans baing the rajor sir.'.

F rc : Sis, the e;uilibri'rt ratio o' the carbon-l? to natural ccrban in the a trc:pherc uas dater-rie:1 This same ratio ucs th:n :ssu??d to exist in man so that the dase receiv?d by the entire

ula ticn o f the U. #

could be est cited.

Trit.v, was assured to eix uniformly in the world's hydr:se'ere, which 'vs a su 2d to ircluda all the n2ter in tha atmosphere ard ir. the cpper 70 ret:r: af *ne oce:cs With this :d:1, the equilibritmi ratio of tritium to hyMsen ia the erv r e. ent :an te calculated.

-ra sa e ratic, ss assured to exi;t in can, and uns used to CTI' : J t? the PR0ululION d0s2. An ~~e s*1e 33nn0r 33 Ith C r00n-li.

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