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FederafReg! er'/^Vol.-4h,.Nir 212 /`Thursday;October.30,�1980'/t Ptioposed-Rules' 7.2029'
<br /> ENVIRONMENTALPROTEC'TION` FOR MITHEWINFORMATION,CONTACTi significants"The,-Agency'has�receivedv r
<br /> AGENCY' Matthew A.Straus;®ffice-of Solid many comments.arguing that trivial-nt=.
<br /> Wast6 fWH-565],U.SrEiivironnrentaF chromium is.sharply`distingui4able
<br /> 40'C1=R'Part`261' Protection-Agency,401 M St S.W_ from hexerralerrt?chrome=iiirts:potentlal
<br /> Washington:b.0 20460;(202)756-9187' to cause�signifrcarrtehuiiraxi health'.and >
<br /> [SW FRL 1833'=aali ... SUPPLEMENTINFOaiMAT)ON:The; environmental harIri llnd&r IIormally--
<br /> -- Environmental Protectibn.'Agerwyy is^ occurriiigsolu'1 wa:st'e managembnt
<br /> Hazardous1Weste'Mana9ement1 proposing.today,tb-,amend the conditions:These',cominenters,ultimate
<br /> Systbrn Identification+and Listinzj;`of characteristic:of`$P toxicit 40'CFR point is.=that soflidswastes'containing°
<br /> Hazardous'>Wastes= y(` exclusively, or viitually:exclusively,
<br /> 2M 7,4;,455 F R 33122),to apply;to.
<br /> hexavalentchromium iiisteadof total trivalent`chromium are;not hazardous--
<br /> AGENCYeEiMionmenta'1Protectiond cliromium.This-preamble-.describes the -due^t6-,chromi6m:coYicentrations,arid' "
<br /> Agency:-- reasons.for this-proposed°amendment , should riot`be=regulatedtas if they'
<br /> ACTION.Pioposed'rule the precise standard being proposed, containaiexavalent chromium:=
<br /> and`a proposed°new.analytical•method The Agency,has reviewed these'.
<br /> SUMMARY:-pursuant-to 9ectibn,3001•of. comments'carefuily;an&has=conducted
<br /> for distinguishing--between.tri-andz
<br /> the Resource t onservatibnrand its-own-iiivestigation of�this question:a,
<br /> • hexavalent.clirgmium
<br /> R6coveryAct'of-1976 as`amended' promulgatingthe=regulations'arid,'fn
<br /> .,(RCRA);theEhvironmental7Protectibn I,,Iiasis'For`aDistiiiction'"in=the response,-to-thecommente'.-Webelieve
<br /> =
<br /> Agency i§=proposing-tdamend-the- HazardousWastb-Management' thatthetoxicity-and'eiiviiar entalfate'
<br /> characteristic of°Extraction Piocedure' 'Regulations'Be'tiween The-Different of+trivaI6nt chrornifini-meritsifurther
<br /> (EP)toxicity(40ICFR°261.24;45°FR Valence States of'Ghromium� study;andlwe-.inten&tb'investigate�
<br /> 33122)to,apply,to°liexavalent'chromiumUn May 19..and July.16,.1980;EPA these-questibns=further 3t-ii-,our`
<br /> instead of1tbtal'"cliromrum.The effect of publislied,its-initial`regula.tions- conclusion,however;thatat the preseri
<br /> amending:the'-EP`toxicity`charactcristic- imp lementing-Section.3001_of-the time the hazardous waste management'
<br /> will.be tti-narrow the°scope:of the`EP' Resource-Gonserva#ion and Recover-y, regulations should be amended't&-reflectt
<br /> characteristic`making-it'applicable to`a Act.of.197fi(RCRA);as,amended-(see.,45. a distinction between',tiivalent'and'
<br /> more limited category of'chromium= hexavalent chromium:The�principal=
<br /> FR 33084 and.47832).These-regulations. oints'of distinction$etweenthe'two
<br /> containing'wastes:Tliewwastes:will define.the scope.ofe:comprehensive. p
<br /> then be subject tp-the`inariagement.'. Federal and State program.to:effectively types of chromium-,whichwebelleve=
<br /> standards issue d`by EPA Sections, control:the:management-of Hazardous. justify thi§regulatory,ainendment are 4
<br /> #oxieities and the differing
<br /> 3002 througk_3006`and 3010'of RCRA wastes.. - the differing
<br /> (Parts 262'througli 265 12Z.`through=124 . Under,these,regulations;a,solid.wastepotentials46r-wastemobility of
<br /> -
<br /> of this Cliapteraiid-45 FR°12746):As-,part- beDomes:subject.to.the:liazardousPwaste chromium(III)=and chromium(VI),-and"7
<br /> of this proposal„tho-Agericyis'proposfiig= 'management=system-in-either of-two, the-appent low>likeliliobd that
<br /> a new`analyticalmethod-forusolir-. ways:the•specific waste.is istedan Parf° u'ivalerrt`chromium-will.oxidize to=
<br /> emalyzingwaste'extractsfar-the` 261 Subpart e fi FR33122-33edti 7P. hexavalent-eliromiiintundermost' ,
<br /> presence of hexavalent~chromium: plausibly-occurring types.of improper.
<br /> exhibits any of the.characteristics of wastb-managetnent These-These -a'
<br /> DATES:EPA,.will-_acceptpulilic, hazardouswaste ide-ntffied in Subpart''C are..di'scussed•in.more:detaii'.belbw..
<br /> comments on the.proposed`amendrnent: (45 FR 33223=122):The cxiterfafor'iisting>
<br /> until`Decemlier.30;19$0.Any.person hazardous wastes•and the characteristic A.DJ tinctloins-iir=tEe.Enviranmental'
<br /> may request a lieajingon-this proposal` , of EP-toxicity,are:based.upon-the:total. Hazards.P_`osed_.bk,Trivalent and'
<br /> by'filinga request with JohrrP'Lehman,, chromium.present`:in'4hewvaste anddn Hexavalent.cli`romium
<br /> whose address appears below,by,. the waste extract respecfiively;without: It is generally agreed among_the,
<br /> November 20;'.1990":-The.request`must ' differentiating the type=of'chromium scientific.'community:that:the availallle-
<br /> contain the information prescribed`in presents.These.regulations-thus_sprecify. data-show-thattrfvalent.chromium4s'
<br /> §260.20(d)of this chapter. "chromiurira3�rd:c6mpounds N O.S:"as less toxic.thantheliexavalenf.form:.The:.:
<br /> ADDRESSES:Garnments^should be hazardbus_-constituents1or.purposes.:of. carcinogenicity ofvarious',hexavale'nt.
<br /> addressed-to--Docket�Clerlc;Office`of, listinghazardauswastes'(see'Appendix, chromium compounds in human and.
<br /> SolidWaste(WH=562],-U S: ilLto:Part,2(31,45'FR.at,33132);.and'` animal models hasnbeen well
<br /> Environmental'Protection-Agency;•40ii.M-: specify a'niw:iinum'cancentratiori .vel. docurnented(NAS,1974;`IVIOSPI;.1975;'
<br /> Street;SW.,.Washington„.D.C.20460. for”chromium"'wi en.identifyir g'wastesU.S.EPA,1978).EPA's`Garcinoger
<br /> Requests forhearing should:be. by me'ans of the-EP toxicity', ' Assessment Group(CAG)has--
<br /> addressed
<br /> as�-addressed to JohnP;-Lehman,Director,`, characteristic:--(See=§`261.24'45 FRIat: determined:thafthere--is�substantial'
<br /> Hazardousrand Industrial Waste 331221)Anumber=of;wastes listed-in':the' evid6nce drat Hexavalent chromiunr
<br /> Division;Office of,Solid Waste[WH. May and Julyregulations',contain_' compounds,are carcinogenic in-man.
<br /> 565],U S.Environmental Protection. chromium-as a,constituenFof_concern Data on-the:CarCino-genicity>of.trivalent'.
<br /> Agency,Washington,D.C:20460. (specifically.EPA.Hazardous Waste Nos- chromium-.arezmadequate There have
<br /> Communications,should`identify:xthe:, F006,1(002408,K,04"51;K053L058; been no epidemiological:studies orifi
<br /> regulatory`docket number;"Section 3001 K061-0W;-K069;K07k K07"82,K086;. workers-usingtrivalent.ch-romium'.
<br /> chromium.standard." and K090=002,):Addifional wastes-are' compound's •r•a3's'sh-owed'auweak�.
<br /> The public docket for this proposed.- expecte=d-to_be'identified'as Hazardous carcirrbgenic:respoiraw.to_-chromiuifi tiIIJ.
<br /> rulemaking-is locatedin:Room:2711;U:S. b6aauselhay fail'the-EP-'toxicity;
<br /> Environmental Viotectloif Agency;401 Mcharacteristic:fOr'CHromiurrl: Chtomium vslence:swtes of.—2 ta;+:.'have"
<br /> St-.,..SW.,Wa•sliington',15.C:20460 and:is' Chromium however.octdrs•iivw been reported;but iuostof:•these:ar@•toaunstabledo
<br /> availalile:fbnviewiiig:from 9:00'a:mta
<br /> .: : numbere`
<br /> ofxalencstates of'wluch-the-' be of significance inbiological and environmental.
<br /> 'processes.See generally U S-EPA Watel M6ted'
<br /> 4:00 p:m.,Mondaythr-oughTriday;. trivalent`(0n(111))_aiid,tke-h'exavaient` Environmentot-Fatd--o{33zsnrior'sty,Poliuicrnts;vdl.-
<br /> excludingholidays- - (Cr(VI))are,environmentally 1,EpAL446y¢70=o2ga(1sn):
<br />
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