ML19276H613
| ML19276H613 | |
| Person / Time | |
|---|---|
| Site: | 07000903 |
| Issue date: | 05/06/1975 |
| From: | Nelson P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Seymour W NEW YORK, STATE OF |
| Shared Package | |
| ML19276H604 | List: |
| References | |
| FOIA-79-370, FOIA-79-398, FOIA-79-423 NUDOCS 7912070335 | |
| Download: ML19276H613 (6) | |
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UtJITE D STATES NUCLEAR REGULATORY COMMISSIOfJ ntators1 631 PAstK AVENUC KING OF PF4USSI A. PENNSYL.VANI A 1940G MAY G 1975 Dr. William E. Seymour Staff Coordinator New York State Atonic Energy Council cc Ucu York State Department
'G of Ccmmerce 99 Uashington Avenue Albany, Neu York 12207 Gentlemen:
The enclosed results of analyses performed on soil samples taken at the Gulf United Nuclect, Pawling site and submitted for analyses on April 8, 1975 by New York State personnel are hereby forwarded.
Thc crc.lyccc =. :. prferecd by the Idche !!ccith Scrciccc Labcrctory. Th:-
results arc listed in' disintegrations per ninute per f, ram of soil and are s
for the -35 mesh fraction.
Tiie total ucight of the sample may be deter-mined by adding the +35 and the -35 mesh fractions.
The +35 mesh frac-tion consisted primarily of gravel-like materials.
Should you have any questions on this matter, please contact J. P. Stohr
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of this office.
Sincerely, J
Dh n aul R. Nelson, Chief Radiological and Environmental Protection Pranch
Enclosure:
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R c. C E! y g O a1 Dr. T,radley
" f-] g g Mr. Cashnan Plutoniua in Soil - Pauling Sito N w Ycrk state BT'ent cf Ccmmerce February 27, 1975
'DhC WEGY COUNCF l
I The Hucicar Reguintory Co eission intende to release the j
United Nuclear Site in 1.mling for unrestricted uco and has asked whether the state had cny objections to such release. The State has been revic eing the applicable data in order to catablich an "ad hoc" n11cuable icvel of plutoniua in rurface soil comples at the cito in Paulin',.
Iho 1cvel of 2 dpa/g used by the State of Colornda has Icecn reco=caded by D.d.C. an an "ad hac" linit for the United.:ucicar Site. Tr.o state iinnith Department _ cone rs_uith this approach.
Your letter of rebruary 3 cnd cubacquent conversations indicate tivit if the Ocpart;.* cut of IAbor had jurisdiction, a varianco from Codo P.ule 33 rd r,ht _have,to bc_ cbtaiced because Tables 5 and 2 Code Eule 33 npecify 1 x 10~" uti/;; (equivalent to 0.02 dpa/g) of soil for alpha emittora other thea upccial nuclear and transuranic reatcrici not lir,ted in Iabic 2, Coluna 2.
Although plutonitt, would be exenpted cu a spccini nucicar cnd transuranic naterial it is a hazardous cLpha caitter r.nd chould auct restrictions applicable to other ciphn c.,ittera unless thero is a reaconabic basis for using a less strin:; cat otandard.
The Code Rulo 38 technical basic for the standard of 1 x 10-8 uci/g applying, to coil is nat cicar. Hovover, one r.t.y corno up with this con:ervativ2 limit using several approaches.
The Federal Padiation Council upper lictit of Range II reco mandation for 2-b,a is 20 pCi per day continuous intake. If a person were to consumo 2 liters of drinking water por day this would arount,to en allowable concentration of 10 pC1/1 or 1 x 10'3 uCi/n1 of " Es.
239 The allouable body burden of Pu for a radiation worker is ascu-cd to be 0.04 uCi and for a innber of the p,cneral public 0.0')4 uCi (ICRP Report of Cniittee II - 1959). If a person vore to concu::c 1 liter of water por day for 365 days, the concentration that would give a total intake of 0.094 uCi would bc 1 x 10" uCi/ml.
The first approach is biued on the ingestion of 22 bn rather 239 than
?u.
Tbc cecond approach provides total intake but not the body burden as it completely icnores the fact that in:;osted plutonium is not taken up in human bone in the some canner an in3cated radium. This dif ference in uptake in pointed out by the allowable bbdy burdep [or a radiacion worker for "Pu of 0.04 uCi conpared to 0.1 uCi for 2"Ra 1522 101
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' thile the albr.,ble concentrations applicabic,to radiation workers for 2WPu in cater 1a 500 tims higher tan the "%'a liuit according to the.
199 IC't? Pcuart. The pesent radiction codes; Part 20, code Rule 33, f Ibre 16 nm! Pat t 330, hevo a $1b limit of 5 x 10*f uti/n1 in voter t
concentration of f eitc. This is 166 tiros hiclur than the "bna liuit e of 3 x 10" utile 1.
Actuutny, that the limit of 1 x 10'3 uC1/g in Co baced on tha IZ.0 reccaandat.Lons for 11 sits en intake of "p, Rule 33 ic Pa, it 10 not reclintic to nese-c that a peroon con::tc.ca lorr;u r=ounta of soil.
gf for inctnace, a incon wuld have ta cenara2 appronicotel'/ 9 pauuds,of
!f coil rcr cay coatcrJnated,at 2 dp/,,12 fore t.ho rart 20 Ikit for " Ju lI ingestion (1/3 cz 5 x 10 ' uCi/ul) tesy be canoidared to lie excceded.
!l Thu resu::pencion of Tu fro a the coil un the curfaca and raruitint air enuteutratioa Esi cenniCored to ba the controlling factar en to alle".nlo conecatration of ru in tha r oil. This in the critical pJMmy casu:vd by the ataca of Colorado in arrivin; at the limit of 2 dp;a/g.
D... 0. concuro that inholction rather thab ingcotion vould 1,o the critient patin.ay for Pu in coil.
It should be noted that tite State of Colorado hu ret tho limit bered on a dry c1 Sate uith littla precipitation conpred to 12v York Str.to.
This cddo coditional coaservatic:a to the ecc of the 2 drm/;;
eterNrd in !!w York.
Another factor that cupparta the cen arvativenca:: of the 2 dpa/;t stanMrd vould be th0 nsxix.tra cent'.nuouc concentration of particulci.ca alleved in air by U.C.C.'s culen cud Roguistion:. The itnximi cllo.cablo centirouua concentration is 75 v3h23 If all of the
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} ll.y Inrtiev1ctos at thin r,axt st concentrction wre to consit.t of soil contoining 2 dra of MJu/n roit thir,vauld cuaunt to 0.11=',of the p!
nilos.oblo concentration of Mu,in air (6 x 10-l uC1/EO specified j
i in the Stato rcdiation codes.
T'v3 Stato vould teto action ta reduce
,l the,,;'3ct b2 din ; in the air vall beforo a prob 1c:n with air conecatration
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of "> Pu resulted.
In view of the chova inforection cnd casusing the cita remined under the La!nr Departoent's jurisdiction, vould you reccmand to the Eoard of Standards and Appcsis that a variance La granted to code nulo 33'c limit of 1 x 10-o uCL/a that you interprce on applying to plutoniusu in soil. Would you also reca wend to the Board of Standards and Appeals the acceptance of the 2 d n/g limit for plutonium in soil cs a conservntive i
limit that would allow cure atricted uc.o of the prcporty by non-radiction vorhera.
cc Mr. Perrican Mr. Dc3aer Mr. Levice Dr. Munck 1522 102
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20E3 JM 8 1975 Fr. Thomas J. Cashman Director, Eureau of Radiation New York State Departcent of Environ ental Conservation S0 Unif Road Albany, New York 12233
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Dear Ton:
I au responding to your request of Decenber 16, 19 7 /., to pro >ide guidance en applicable criteria useful in determining axitun re..: dual levels of conta :in,. tion of plutonica allowable on land released f or unrestricted publ.ic use.
No current Federal regulatiens for caxicon permissible soil contaminatien 1cvels for thesa elements exist.
Derivad 121 n a
'r ud on naxit.ut pemissible air concentration or r.aximum pernissible bcd" burden have sonetires been applied, but thesc should not be construed as otandards.
The U.S. Environmental Protection Agency currently has the entire qacstion of generally applicable environmental stanuaros for plutoniun and the other transuranium eierents under review.
This progra: is now in the infornation-gathering stage and public hearinas have been scheduled.
- je eeve r. no t;uidelines suitable for your p g-pose can reasonably be expected betore late P><3.
Until a comprehensive soil standard can be developed, we belicvc that all decisions should be made on an interi=, ad_ hoc basis, subject to revision if necessary.
In the absence of detailed information on your particular problem,.te are forced to restrict our c: nentn to only :;cneral guidance.
Useful criteria for decision-r :hing include c on s i d c ra t iv:. a: the preposed use of the site in questien, the current level of contanination, the feasibility and costs of additional cleanup, the estimated population health risk icpact, and all other parameters of a co=prehensive risk-cost-benefit analysis. At this time, the rest restrictive soil contamination limit for plutonjua in
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the U.S.,
of which we are aware, is the interim' standard adopted by l~
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the State of Colorcin in 1973.
This specifies a limit of 2 dpa r.er grca of dry soil for steas released for unrestricted eccupancy.
The applicability of thi, ll=it to your particular problen should be considered from the viewpoint of the above co==ents.
I cungest the report by J.U. Healy of the Los Alntos Scientific
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Laboratory entitled, "A Proposed Interia Standard for Plutonica in Soils" LA-5433-MS, January 1974, for further reading on this subject raa t t e r.
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Sinccrely yours,
,d.,x2 /
Willian A. Mills, Ph.D.
Director a
Criteria 6 Standards Division ( A'n'-5 60) cc:
Mr. Herbert H. Bro.cu, AEC Mr. Michael S. Terpilak, Region Il i
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