ÿWPC¹  ¹Qw=^‚R¢T o µ}áÊOÛ¹TH@Æa0ê!´í‚ V-&™‡Îh^ëmž;w·³ÕxË^ÛöÏ ­Ù@ÒÖŸ6äàwf@³4C2'Ù÷ž…ùÏÔ#a²Õ61èôs~i'¹Êƒêƒ$Æ€OÃU‘ YÍ›?Ô™À¢«åù€Y¬ûCb²ó2¦aØÕ“‹ã$*ÿ ^ ê^lôtWÁÉà‚N3E/²zòÓ8”ðĘKmÿÁüÍŸ‡K¥8žYYÑEÍ N=`YÃRƒS·Øóî( G‰_X¾š8’ÛÜ9Î[ùEd<,Céˆg“‹žfÿü`_¢´«ÎT°-ÓâÛ.9V4Ÿ, ƒ( IÄG¨Y6öiFw²Ð&!Ñh{>¨(µj ƒ²D[0…Ä.ç/XKœ$_-N˜Äå¾ RµÜìúã’Lv%<²ÙŽ“Çã€ÎeBÃ#í'.­o‰nëè2¥­¬;­y¹ûr»¾Dˤ¹†_«ZñÒ?®ÐëÜ‘^Öšlô9ŽVËqBg¤ÙÿY“=“PKD‚–4‰–†°¤)5pEYu=N¡ÅŒ:^"º»F9è®G(¡J_Á¾è4—NDѼ3œÛe…o+®üDª 0CîU1I 0CÖU1nXAUN™ %çí 0(íD UY w4q 4¥ ' ELR Federal Register Archive2Folio Views InfobaseWest Group 0 .    :Ý ƒL'ÝÝ  ÝÔ€X®…XX XÔ(3L$§§Ý ƒ !ÝÝ  ÝŒðy` ƒÝ ƒL)ÝÝ  ÝÔ€X-_XX XÔÓ' xÐ (#€%°œX'Ó€€€€€€€€€€Ú  Ú1Ú  Ú(2L$©©Ý ƒ !ÝÝ  Ýú\ `3|x«Œðy`XXXŒðyPQXPú\ `XXPú\  PQXP(ÖÃ9 Z ‹6Times New Roman Regular X($¡¡ :Ý ƒL'ÝÝ  ÝÔ€X®…XX XÔŒðy`DD‹UUDUV—$Ý ƒ !ÝÝ  ÝÓ  ÓññÖ€ÿÿÖññññÖ€ÿÿÖññÖ€ÿÿÖò òÔ€X-_XX XÔÔ€ÔÓH4X°` ¸ hÀpÈ xÐ (#€%°œXHÓññÑ  ÑññPROPOSED€RULESÐ d ÐÔ€ÔAir€pollutants,€hazardous;€national€emission€standards:€Perchlorethylene€emissions€from€dryÏcleaning€facilities€Meeting,€53900Ìó óVol.€58€No.€200€Tuesday,€October€19,€1993€p€53900€(Proposed€Rule)€€€€€€1/337€€€Ð ( Ä ÐÌENVIRONMENTAL€PROTECTION€AGENCYÌÌññÌññ40€CFR€Part€63€ÌÌññÌññ[AD-FRL-4791-4]€ÌNational€Emission€Standards€for€Hazardous€Air€Pollutants€for€Source€Categories:€PerchloroethyleneÏDry€Cleaning€Facilities€ÌAGENCY:€Environmental€Protection€Agency€(EPA).€ÌACTION:€Notice€of€public€meeting.€ÌSUMMARY:€National€emission€standards€for€hazardous€air€pollutants€(NESHAP)€forÏperchloroethylene€(PCE)€dry€cleaning€facilities€were€promulgated€in€the€Federal€Register€onÏSeptember€22,€1993€(58€FR€49354).€In€order€to€gain€additional€understanding€of€indoor€air€pollution,Ïground€water€contamination€and€solid€waste€generation€resulting€from€dry€cleaning€facilities,€EPAÏwill€convene€a€public€meeting€in€New€York,€New€York.€Information€also€will€be€sought€on€theÏenvironmental€impacts€associated€with€the€operation€of€wastewater€evaporators.€The€objective€of€thisÏpublic€meeting€will€be€to€gather€information€on€the€magnitude€of€these€problems,€as€well€as€potentialÏsolutions€to€these€problems.€ÌDATES:€Comments.€Individuals€wishing€to€submit€written€comments€in€lieu€of€attending€this€publicÏmeeting€should€forward€their€comments€on€or€before€November€21,€1993.€Ì€€€Public€Meeting.€The€public€meeting€will€be€held€on€November€3-4,€1993€in€New€York,€New€York.ÏThe€meeting€will€start€on€both€days€at€9€a.m.€There€will€be€an€evening€session€on€the€first€day€startingÏat€7€p.m.€ÌÌ€€€Request€to€Speak€at€Meeting.€Individuals€wishing€to€speak€at€this€public€meeting€should€contactÏMrs.€Julia€Latta€at€(919)€541-5578€by€October€27,€1993.€Each€speaker€is€asked€to€limit€his€or€herÏremarks€to€10€minutes€or€less,€unless€otherwise€arranged.€Those€wishing€to€speak€longer€than€10Ïminutes€should€contact€Mr.€George€Smith€at€(919)€541-1549€after€contacting€Mrs.€Latta.€ÌADDRESSES:€Comments.€Comments€should€be€submitted€to€Mr.€Bruce€Jordan,€Director;€EmissionÏStandards€Division€(MD-13),€Environmental€Protection€Agency,€Research€Triangle€Park,€NC€27711.€Ì€€€Public€Meeting.€The€public€meeting€will€be€held€in€New€York,€New€York€in€the€Gold€Ballroom€ofÏthe€Ramada€Hotel€Pennsylvania€on€401€7th€Avenue€(West€33rd€Street€and€7th€Avenue€in€Manhattan,Ïacross€from€Pennsylvania€Station).€A€limited€number€of€hotel€rooms€will€be€made€available€at€aÏreduced€rate€from€the€Ramada€Inn€to€those€that€make€reservations€by€October€19,€1993.€In€order€toÏreceive€the€reduced€rate,€those€making€reservations€must€say€they€will€be€attending€the€EPA€publicÏmeeting.€Telephone€numbers€for€the€Ramada€Inn€are€(800)€223-8585€and€(212)€502-8161.€Ìâ âÐ D+à$( Ѐ€€Docket.€Docket€No.€A-88-11,€containing€information€considered€by€the€EPA€in€development€ofÏâ âthe€promulgated€standards,€is€available€for€public€inspection€between€8:30€a.m.€and€3:30€p.m.,ÏMonday€through€Friday,€excluding€Federal€holidays,€at€the€EPA's€Air€Docket€(LE-131),€WatersideÏMall,€room€M1500,€1st€Floor,€U.S.€Environmental€Protection€Agency,€401€M€Street€SW.,ÏWashington,€DC€20460.€A€reasonable€fee€may€be€charged€for€copying.€ÌFOR€FURTHER€INFORMATION€CONTACT:€For€information€concerning€the€standards,€contactÏMr.€George€Smith€at€(919)€541-1549€or€Mr.€Fred€Porter€at€(919)€541-5251,€Standards€DevelopmentÏBranch,€Emission€Standards€Division€(MD-13),€U.€S.€Environmental€Protection€Agency,€ResearchÏTriangle€Park,€North€Carolina€27711.€ÌSUPPLEMENTARY€INFORMATION:€The€promulgated€NESHAP€will€achieve€significantÏreductions€in€PCE€emissions€from€new€and€existing€dry€cleaning€facilities.€There€remain,€however,Ïseveral€major€issues€associated€with€dry€cleaning€facilities€that€merit€further€attention.€These€include:Ï(1)€Indoor€air€pollution€in€residences€located€above€dry€cleaning€facilities€and€(2)€groundwaterÏpollution€resulting€from€dry€cleaning€facilities.€These€issues€were€brought€to€light€following€proposalÏof€the€NESHAP€by€the€New€York€Study€(indoor€air€pollution)€and€the€California€Study€(groundÏwater€pollution).€ÌNew€York€StudyÌ€€€The€New€York€Study€is€an€assessment€of€indoor€air€pollution€in€residences€above€dry€cleanersÏperformed€by€the€State€of€New€York.€Many€States€and€environmental€groups€referred€to€this€studyÏin€their€public€comments€on€the€NESHAP,€and€several€commenters€submitted€copies€of€the€studyÏattached€to€their€comments.€They€believed€that€the€study€shows€the€risk€to€public€health€from€dryÏcleaners€is€significant€and€should€be€targeted€for€regulation.€They€mentioned€that€although€the€ActÏdoes€not€specifically€address€indoor€air€pollution,€indoor€air€emissions€eventually€become€ambient€airÏemissions.€ÌÌ€€€The€New€York€Study€focuses€on€dry€cleaners€located€in€Albany,€New€York.€All€102€dry€cleanersÏlisted€in€the€Albany€telephone€directory€were€contacted.€Of€these€102€dry€cleaners,€67€cleaned€orÏpressed€clothes€on€the€premises.€Of€these€67,€6€had€occupied€residences€above€them.€ÌÌ€€€The€levels€of€PCE€in€the€indoor€and€outdoor€air€at€residences€located€above€the€6€dry€cleaners€wereÏmeasured€over€a€24-hour€period.€Identical€measurements€were€taken€at€the€same€time€at€6€controlÏresidences€located€at€least€100€meters€(330€feet)€away€from€each€dry€cleaner.€The€control€residencesÏwere€selected€based€on€their€similarity€to€the€study€residences€in€terms€of€building€type,€age,€andÏneighborhood.€ÌÌ€€€The€study€found€indoor€air€concentrations€of€PCE€ranging€from€100€to€55,000€micrograms€perÏcubic€meter€(mcg/mòò3óó)€[15€to€8,000€parts€per€billion€(ppb)]€in€the€6€residences€located€above€dryÐ ”'0!$ Ðcleaners.€The€cancer€risk€estimate€associated€with€these€levels,€based€on€the€EPA's€unit€cancer€riskÏestimate€for€PCE,€is€1€in€100,000€to€1€in€100€(10òò-5óó€to€10òò-2óó).€Control€residences€had€indoor€air€PCEÐ l)#& Ðconcentrations€ranging€from€6€to€100€mcg/mòò3óó€(1€to€15€ppb).€The€associated€cancer€risk€associatedÐ X*ô#' Ðwith€these€levels€is€1€in€1,000,000€to€1€in€100,000€(10òò-6óó€to€10òò-5óó).€Ð D+à$( ÐÐ 0,Ì%) Ѐ€€The€New€York€study€indicates€that€PCE€emissions€can€accumulate€in€residences€located€above€dryÏcleaning€facilities,€leading€to€increased€public€exposure€to€PCE.€While€not€definitive,€in€the€EPA'sÏopinion,€based€on€various€observations€included€in€the€New€York€study,€it€appears€the€majorÏcontributor€to€the€elevated€PCE€levels€measured€in€the€residences€located€above€these€dry€cleanersÏis€fugitive€emissions.€ññÌññÌCalifornia€Well€Investigation€ProgramññÌññÌ€€€The€California€Well€Investigation€Program€is€an€assessment€of€ground€water€contaminationÏundertaken€by€the€State€of€California.€The€study€contends€that€PCE€contaminated€discharges€intoÏsewer€lines€by€dry€cleaning€facilities€has€contaminated€ground€water€in€several€areas.€ÌÌ€€€The€California€Study€focuses€on€wells€in€the€Central€Valley€Region,€which€supply€drinking€waterÏto€municipal€water€systems.€Water€drawn€from€215€out€of€some€2,000€wells€tested€containedÏdetectable€levels€of€PCE.€Of€these€215€wells,€water€drawn€from€47€wells€contained€levels€of€PCEÏabove€the€maximum€contaminant€level€(MCL)€of€5€parts€per€billion€(ppb)€in€the€National€RevisedÏPrimary€Drinking€Water€Regulations.€ÌÌ€€€Soil€gas€surveys€and€ground€water€movement€around€21€of€the€47€wells€with€levels€of€PCE€aboveÏthe€MCL€indicate€the€source€of€PCE€contamination€in€these€wells€to€have€originated€from€sewer€lines.ÏIn€20€out€of€these€21€wells,€dry€cleaning€facilities€were€identified€as€the€sole€users€of€PCE€connectedÏto€the€sewer€lines.€Soil€gas€surveys€along€the€main€sewer€lines€downstream€from€sewer€lateralsÏconnecting€the€dry€cleaners€to€the€main€sewer€lines€also€showed€relatively€high€concentrations€ofÏPCE.€As€a€result,€the€study€concludes€that€dry€cleaning€facilities€are€the€source€of€the€observed€PCEÏcontamination.€ÌÌ€€€Recovery€of€PCE€for€reuse€within€the€dry€cleaning€process€generates€wastewater€contaminated€withÏPCE.€Most€of€the€PCE€contained€in€this€wastewater€is€recovered€in€a€water€separator.€Water€fromÏthe€water€separator,€however,€is€routinely€discharged€to€the€sewer€at€many€dry€cleaning€facilities.ÏSeparator€water€generally€contains€about€150€ppm€of€PCE;€but€it€may€contain€as€much€as€30€percentÏPCE€if€the€water€separator€is€poorly€operated.€ÌÌ€€€Dry€cleaning€machines€that€use€a€refrigerated€condenser€for€process€vent€control€generate€aboutÏ190€liters€(50€gallons)€per€year€of€separator€water;€those€with€no€process€vent€control€generate€evenÏless.€Dry€cleaning€machines€that€use€a€carbon€adsorber€for€process€vent€control,€on€the€other€hand,Ïgenerate€about€7,600€liters€(2,000€gallons)€per€year€of€separator€water-40€times€that€generated€by€aÏrefrigerated€condenser.€ÌÌ€€€The€California€study€concludes€that€PCE€discharged€to€sewers€from€dry€cleaning€facilities€canÏcontaminate€ground€water.€Whether€the€primary€source€of€PCE€discharged€to€sewers€by€dry€cleaningÏâ âfacilities€is€the€result€of€leaking€equipment,€accidental€spills,€or€PCE€contaminated€wastewaterÐ D+à$( Ðgenerated€by€dry€cleaning€or€that€generated€by€emission€control€equipment€installed€to€controlÏprocess€vent€emissions,€however,€is€unclear.€Ìâ  €The€use€of€carbon€adsorbers€for€process€vent€control€significantly€adds€to€the€amount€of€PCEÏcontaminated€wastewater€generated€by€dry€cleaning€facilities.€While€not€conclusive,€this€suggests€theÏuse€of€carbon€adsorbers€for€process€vent€control€may€be€a€primary€contributor€to€ground€waterÏpollution€resulting€from€dry€cleaning€facilities.€ÌPublic€MeetingÌ€€€The€EPA€believes,€based€on€information€received€to€date,€that€PCE€contamination€of€indoor€air€andÏground€water€are€significant€problems€that€may€warrant€additional€Federal€actions.€The€EPAÏconsidered€seeking€an€extension€of€the€court€deadline€for€the€final€rule€to€deal€fully€with€these€issues.ÏThis€course€of€action,€however,€would€have€postponed€the€health€and€environmental€benefits€of€theÏrule€for€an€extended€period€of€time.€The€EPA€determined€that€the€best€environmental€protectionÏwould€be€achieved€by€issuing€the€final€rule€as€expeditiously€as€possible,€and€deciding€subsequentlyÏhow€to€address€remaining€indoor€air€pollution€and€ground€water€contamination€associated€with€PCEÏdry€cleaners.€ÌÌ€€€The€final€rule,€while€targeted€primarily€at€reducing€PCE€contamination€of€outdoor€air,€may€reduceÏindoor€air€contamination€in€some€locations€through€requirements€reducing€fugitive€and€process€ventÏemissions€from€dry€cleaners.€In€addition,€the€rule€requires€uncontrolled€machines€to€be€controlled€withÏrefrigerated€condensers,€which€will€minimize€generation€of€wastewater€and€solid€waste.€ÌÌ€€€In€order€to€gain€additional€insight€and€understanding€into€the€issues€of€indoor€air€pollution€andÏground€water€pollution€associated€with€dry€cleaning€facilities,€the€EPA€will€convene€a€public€meetingÏ(see€Public€Meeting€under€ADDRESSES€at€the€beginning€of€this€preamble).€The€objective€of€thisÏpublic€meeting€will€be€to€gather€additional€information€and€solicit€public€comment€on€the€magnitudeÏand€severity€of€the€problems€highlighted€by€the€New€York€and€the€California€studies,€and€potentialÏsolutions€or€approaches€for€dealing€with€these€problems.€Copies€of€the€New€York€and€CaliforniaÏstudies€are€included€in€Docket€No.€A-88-11€(see€Docket€under€ADDRESSES).€(The€New€YorkÏStudy€is€Docket€No.€A-88-11,€Item€No.€IV-D-5€with€additional€information€in€Item€No.€IV-J-40;€theÏCalifornia€Study€is€also€part€of€Item€No.€IV-J-40.)€The€EPA€also€would€like€to€be€informed€of€otherÏstudies€conducted€by€States€(or€others)€that€address€the€relative€efficiency€of€carbon€adsorbers€andÏrefrigerated€condensers,€and€their€impact€on€air€emissions.€Anyone€wishing€to€speak€and€makeÏpresentations€at€the€public€meeting€and/or€wishing€to€submit€written€comments,€please€see€theÏsections€Requests€to€Speak€at€Meeting€and€Comments€at€the€beginning€of€this€notice.€ÌÌ€€€The€EPA€will€use€the€information€received€from€the€public€meeting,€as€well€as€written€comments,Ïin€deciding€what€additional€actions€should€be€taken€to€reduce€health€and€environmental€risks€from€dryÏcleaners.€The€EPA€will,€at€a€minimum,€publish€and€distribute€the€information€presented€at€the€publicÏmeeting.€The€EPA€may€then€use€this€information€to€develop€guidance€for€States€and€local€agencies,Ïand/or€develop€additional€regulations.€At€the€meeting,€the€EPA€will€explore€the€desirability€andÏfeasibility€of€using€a€regulatory€negotiation€or€other€consensus-building€approach€to€address€theseÏissues.€Ð 0,Ì%) Ї€€€With€respect€to€indoor€air€pollution,€the€EPA€specifically€requests€States€and€the€public€to€provideÏtheir€views€and€any€available€information€on:€ÌÌ€€€a.€The€number€of€dry€cleaners€collocated€in€buildings€with€residences€or€businesses.€ÌÌ€€€b.€The€extent€and€severity€of€indoor€air€contamination€with€PCE€from€dry€cleaners,€and€theÏadequacy€of€existing€data€on€this€problem.€ÌÌ€€€c.€The€extent€and€severity€of€PCE€contamination€of€fatty€foods€in€residences,€restaurants,€and€foodÏstores€that€are€collocated€with€or€located€near€dry€cleaners.€ÌÌ€€€d.€The€extent€to€which€PCE€indoor€air€contamination€results€from€fugitive€emissions€or€process€ventÏemissions.€ÌÌ€€€e.€The€amount€of€fugitive€emissions€from€different€types€of€dry€cleaning€machines,€and€from€theÏvarious€pieces€of€ancillary€equipment€associated€with€the€dry€cleaning€process.€ÌÌ€€€f.€Methods€for€reducing€PCE€contamination€of€indoor€air,€including€but€not€limited€to:€ÌÌ€€€(1)€Improved€maintenance€involving€the€use€of€instruments€to€inspect€dry€cleaning€equipment€forÏleaks€of€PCE.€ÌÌ€€€(2)€Increased€room€ventilation€and/or€ducting€of€emissions€outdoors.€ÌÌ€€€(3)€Collection€of€steam€press€emissions.€ÌÌ€€€(4)€The€use€of€vapor€barriers.€ÌÌ€€€(5)€Improved€training€of€dry€cleaning€workers,€or€other€information-dissemination€activities.€ÌÌ€€€(6)€A€phaseout€of€existing€transfer€machine€systems€(the€final€rule€effectively€bans€new€transferÏmachine€systems€but€does€not€limit€the€period€of€time€that€existing€transfer€machine€systems€canÏremain€in€service).€ÌÌ€€€(7)€Other€strategies,€control€technologies,€and€pollution€prevention€methods€that€can€reduceÏfugitive€emissions,€especially€at€small€dry€cleaners.€ÌÌ€€€g.€The€extent€to€which€evaporators€are€in€use,€and€their€impact€on€air€quality€as€well€as€wastewaterÏcontamination.€ÌÌ€€€h.€The€relative€performance€of€vented€versus€ventless€machines€in€reducing€perc€emissions.€ÌÐ 0,Ì%) Ѐ€€i.€The€relative€effectiveness,€cost,€and€affordability€of€the€available€options,€as€well€as€keyÏadvantages€and€drawbacks,€including€information€on:€ÌÌ€€€(1)€The€economic€impact€of€a€requirement€to€replace€existing€carbon€adsorbers€with€refrigeratedÏcondensers.€ÌÌ€€€(2)€The€economic€impact€of€a€requirement€to€replace€existing€transfer€machines€with€dry-to-dryÏequipment.€ÌÌ€€€j.€The€appropriate€Federal€role€in€encouraging€or€requiring€steps€to€reduce€PCE€contamination€ofÏindoor€air.ÌÌ€€€k.€The€proposition€that€the€EPA€should€voluntarily€conduct€a€residual€risk€analysis€for€area€sourceÏdry€cleaners,€as€well€as€a€statutorily€mandated€risk€analysis€for€major€sources,€to€assess€remainingÏhealth€and€environmental€risks€after€installation€of€MACT€and€GACT€technology.€(Based€on€theÏresults€of€this€analysis,€the€EPA€could€assess€whether€more€stringent,€health-based€standards€areÏwarranted);€and€ÌÌ€€€l.€Examination€of€coin-operated€dry€cleaners€exempt€from€the€dry€cleaning€NESHAP€to€evaluateÏtheir€potential€contribution€to€indoor€air€pollution.€With€respect€to€ground€water€contamination€andÏsolid€waste€generation€by€dry€cleaners,€the€EPA€specifically€requests€that€States€and€the€publicÏprovide€their€views€and€any€available€information€on:€ÌÌ€€€(1)€The€extent€and€severity€of€contamination€of€ground€water€with€PCE€from€dry€cleaners,€and€theÏdegree€of€health€threat€posed€by€this€contamination;€ÌÌ€€€(2)€The€relative€contribution€of€wastewater€discharges,€accidental€spills,€equipment€leaks,€andÏimproper€hazardous€waste€disposal€to€this€ground€water€contamination;€ÌÌ€€€(3)€Costs€of€treating€well€water€contaminated€with€PCE€to€make€it€safe€for€drinking,€and€the€costsÏand€feasibility€of€cleaning€up€ground€water€contaminated€with€PCE;€ÌÌ€€€(4)€The€degree€of€solid€or€hazardous€waste€generation€associated€with€the€prevention/controlÏtechnologies,€information€on€how€these€wastes€are€managed€and€their€environmental€impact.€ÌÌ€€€(5)€Potential€measures€to€prevent€or€minimize€further€contamination€of€ground€water€with€PCE,Ïincluding€but€not€limited€to:€ÌÌ€€€(a)€Use€of€wastewater€evaporators€by€dry€cleaners.€ÌÌ€€€(b)€Required€replacement€of€existing€carbon€adsorbers€used€for€process-vent€control€withÏrefrigerated€condensers,€perhaps€through€a€gradual€phaseout.€(The€EPA€particularly€solicits€commentÐ 0,Ì%) Ðon€how€the€EPA€could€use€its€legal€authorities€to€require€a€gradual€phaseout,€the€environmentalÏbenefits€of€a€phaseout,€and€the€economic€feasibility€of€potential€phase-out€schedules.);€ÌÌ€€€(c)€Improved€maintenance€of€dry€cleaning€equipment€through€improved€training€of€dry€cleaningÏworkers€or€other€information-dissemination€activities;€ÌÌ€€€(d)€Encouragement€of€emerging€PCE€emission€control€technologies€that€use€adsorption€but€do€notÏgenerate€wastewater€because€regeneration€is€performed€through€heat€desorption€rather€than€steamÏstripping;€ÌÌ€€€(e)€Spill€prevention€and€control€measures;€(f)€A€ban€or€limit€on€the€discharge€of€PCE-contaminatedÏwastewater€to€sewers;€ÌÌ€€€(g)€Disposal€of€dry€cleaner€wastewater€at€hazardous€waste€facilities;€ÌÌ€€€(h)€The€practical€use€of€dry€cleaner€wastewater€in€boilers;€and€ÌÌ€€€(i)€The€relative€effectiveness,€costs,€and€affordability€of€the€available€options,€as€well€as€keyÏadvantages€and€drawbacks.€ÌÌ€€€(6)€The€appropriate€Federal€role€in€encouraging€or€requiring€steps€to€reduce€the€threat€of€groundÏwater€contamination€from€dry€cleaners.ññÌññ€Ì€€€Dated:€October€8,€1993.€ÌMichael€H.€Shapiro,€Acting€Assistant€Administrator€for€Air€and€Radiation.€ÌÌññÌññ[FR€Doc.€93-25616€Filed€10-18-93;€8:45€am]ÌÌBILLING€CODE€6560-50-PÌÌÌÌÌ