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` (#` (#àGuidelines€for€MACT€Determinations€under€Section€112(j).€Ð $X" ÐEPA:OAQPS.€€EPA€453/R„94„026.€€May€1994.€€p.€50.Ð ¸ (#¸ (# ÐÌII„A„19à0 ` àà0¸ ` (#` (#àPrimary€Aluminum€Industry€„€Draft€Technical€Support€Document€forÐ Ì&"% ÐProposed€MACT€Standard€(Preliminary€Review€Draft).€€EPA:OAQPS.€ÏFebruary€1995.Ð ¸ (#¸ (# ÐÌII„A„20à0 ` àà0¸ ` (#` (#àEconomic€Impact€Analysis€for€the€Primary€Aluminum€MACT,Ð |*Ì%) ÐEPA:OAQPS,€April€1996.€€77€pp.Ð ¸ (#¸ (# ÐÐ  T,¤'+ ÐØØÑ€ÑÔ& ` Ôà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@CC"ìàSubcategory€II„BˆÌà@öö ìàEPA€Factual€MemorandaˆÌÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`° ÔÐ $ t ÐÌII„B„1à0  àà0` (#(#àJ.€Cole,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€January€30,€1992,€SiteÐ ü L  Ðvisit€report€for€Alumax€of€South€Carolina.Ð ` (#` (# ÐÌII„B„2à0  àà0` (#(#àC.€Matthiessen,€EPA:CEPP,€to€J.€Cole,€February€14,€1992,€TransmittingÐ À  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(#(#àT.€Harrison,€EPA:EMB,€to€S.€Fruh,€EPA:ISB,€July€13,€1994,€Evaluation€of€sideÐ X ¨ Ðwork€prebake€roof€monitor€scrubber€outlet€emission€sampling€and€analysisÏprocedures€at€Eastalco€and€Intalco.Ð ` (#` (# ÐÌII„B„9à0  àà0` (#(#àS.€Fruh,€EPA:PPSG,€to€Docket,€July€22,€1996,€Memorandum€regarding€industryÐ $X" Ðcost€estimates€for€primary€aluminum€MACT€standards.Ð ` (#` (# ÐÐ  à%0!$ Ðà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@CC"ìàSubcategory€II„BˆÌà@öö ìàEPA€Factual€MemorandaˆÌÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌÐ  ü L  ÐÔ& ` ÔØØÑ€Ñà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@BB"ìàSubcategory€II„CˆÌà@‡ ‡ ìàEPA€Correspondence€to€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`° ÔÐ $ t ÐÌII„C„1à0  àà0` 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(#(#àJ.€Crowder,€EPA:ISB,€to€G.€Scott,€Intalco€Aluminum€Corporation€(mailing€list€forÐ ¼  Ðaddressees€attached),€March€18,€1992,€Requesting€site€visit.Ð ` (#` (# ÐÌII„C„7à0  àà0` (#(#àS.€Fruh,€EPA:ISB,€to€R.€Carwile,€The€Aluminum€Association,€May€15,€1992,Ð €Ð ÐRequesting€review€of€generic€information€collection€request.Ð ` (#` (# ÐÌII„C„8à0  àà0` (#(#àB.€Jordan,€EPA:ESD,€to€G.€Crouth,€Aluminum€Company€of€America€(mailing€listÐ D!” Ðattached),€June€19,€1992,€Transmitting€Section€114€generic€information€collectionÏrequest€for€primary€aluminum€manufacturing€(questionnaire€and€enclosuresÏattached).Ð ` (#` (# ÐÌII„C„9à0  àà0` (#(#àJ.€Crowder,€EPA:ISB,€to€G.€Crouth,€Aluminum€Company€of€America€(mailing€listÐ à%0!$ Ðfor€addressees€attached),€July€6,€1992,€Requesting€site€visit.Ð ` (#` (# ÐÌÌÐ  )à$( Ðà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@BB"ìàSubcategory€II„CˆÌà@‡ ‡ ìàEPA€Correspondence€to€Outside€PersonsˆÌÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌII„C„10à0 ` àà0¸ ` (#` (#àà0¸ (#¸ (#àJ.€Crowder,€EPA:ISB,€to€F.€Rufner,€Columbia€AluminumÐ ü L  ÐCorporation€(mailing€list€for€addressees€attached),€August€13,Ï1992,€Requesting€site€visit.Ð (#(# ÐÌII„C„11à0 ` àà0¸ ` (#` (#àà0¸ (#¸ (#àJ.€Crowder,€EPA:ISB,€to€The€Aluminum€Association,€NovemberÐ ¬ü  Ð1992€(no€cover€letter€attached),€Voluntary€followup€informationÏcollection€request€for€primary€aluminum€manufacturing€forÏtransmittal€to€industry€representatives€(questionnaire€and€mailingÏlist€attached).Ð (#(# ÐÌÐ  4„ ÐØØÑ€ÑÔ& ` Ôà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`°r.ÔÐ $ t ÐÌII„D„1à0  àà0` (#(#àR.€Carwile,€The€Aluminum€Association,€to€J.€Weigold,€EPA:ESD,€July€12,€1991,Ð ü L  ÐDiscussing€framework€for€categorization€of€industry€operations.Ð ` (#` (# ÐÌII„D„2à0  àà0` (#(#àC.€Kirkland,€Alumax€of€South€Carolina,€to€J.€Cole,€Research€Triangle€Institute,Ð À  ÐJanuary€22,€1992,€Providing€costs€information€for€Lauralco€primary€controlÏequipment.Ð ` (#` (# ÐÌII„D„3à0  àà0` (#(#àD.€Doyle,€Wheelabrator€Air€Pollution€Control,€to€J.€Cole,€Research€TriangleÐ pÀ ÐInstitute,€February€5,€1992,€Enclosing€vendor€literature€on€monitoring€and€controlÏtechnology€for€potlines€and€bake€furnaces.Ð ` (#` (# ÐÌII„D„4à0  àà0` (#(#àR.€Carwile,€The€Aluminum€Association,€to€J.€Cole,€Research€Triangle€Institute,Ð  p ÐFebruary€13,€1992,€Transmitting€information€on€plant€processes.Ð ` (#` (# ÐÌII„D„5à0  àà0` (#(#àJ.€Johnson,€Intalco€Aluminum€Corporation,€to€J.€Cole,€Research€Triangle€Institute,Ð ä4 ÐFebruary€18,€1992,€Clarifying€use€of€dry€scrubber€for€anode€forming.Ð ` (#` (# ÐÌII„D„6à0  àà0` (#(#àR.€Hall,€Maryland€Department€of€the€Environment,€to€D.€Chester,€ResearchÐ ¨ø ÐTriangle€Institute,€February€21,€1992,€Transmitting€1991€study,€"Interim€ReportÏon€the€Fluoride€Surveillance€Program€at€Buckeystown,€Maryland."Ð ` (#` (# ÐÌII„D„7à0  àà0` (#(#àR.€Keltz,€Montana€Air€Quality€Branch,€to€D.€Chester,€Research€Triangle€Institute,Ð X ¨ Ðreceived€1992,€Transmitting€third„quarter€1991€fluoride€emissions€report€forÏColumbia€Falls€Aluminum€Company.Ð ` (#` (# ÐÌII„D„8à0  àà0` (#(#àG.€Wedde,€ABB€Environmental„Norway,€to€J.€Cole,€Research€Triangle€Institute,Ð $X" ÐFebruary€25,€1992,€Transmitting€emissions€and€cost€data€per€request.Ð ` (#` (# ЀÌÌ€Ìâ âÐ ¤(ô#' ÐÔ& ` Ôâ âà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌâ âà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`°8ÔÐ $ t ÐÌII„D„9à0  àà0` 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ÐInstitute,€April€21,€1992,€Enclosing€data€on€Longview€plant€regardingÏwork€practices,€emission€test€results,€capital€and€annual€costs,€employeeÏmonitoring,€control€equipment,€and€owner's€manual€for€wet€electrostaticÏprecipitators€(see€note€to€docket€for€engineering€drawings).Ð ¸ (#¸ (# ÐÌII„D„13à0 ` àà0¸ ` (#` (#àC.€Taylor,€Reynolds€Metals€Company,€to€D.€Chester,€Research€TriangleÐ ”ä ÐInstitute,€May€22,€1992,€Enclosing€additional€information€on€LongviewÏplant€including€emission€test€results€for€PAH€and€other€pollutants,€controlÏequipment,€and€work€practices.€€Ð ¸ (#¸ (# ÐII„D„14à0 ` àà0¸ ` (#` (#àJ.€Steward,€Eastalco€Aluminum€Company,€to€B.€Jordan,€EPA:ESD,Ð D!” ÐAugust€5,€1992,€Transmitting€response€to€generic€Section€114€informationÏcollection€request.Ð ¸ (#¸ (# ÐÌII„D„15à0 ` àà0¸ ` (#` (#àK.€Sands,€NSA€„€a€division€of€Southwire€Company,€to€B.€Jordan,Ð ô$D # ÐEPA:ESD,€August€6,€1992,€Transmitting€response€to€generic€Section€114Ïinformation€collection€request.Ð ¸ (#¸ (# Ðâ âÐ ¸'#& ÐÔ& ` Ôâ âà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌâ âà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`°ñAÔÐ $ t ÐÌII„D„16à0 ` àà0¸ ` (#` (#àS.€DuBois,€Alcan€Rolled€Products€Company,€to€B.€Jordan,€EPA:ESD,Ð ü L  ÐAugust€7,€1992,€Transmitting€response€to€generic€Section€114€informationÏcollection€request.Ð ¸ (#¸ (# ÐÌII„D„17à0 ` àà0¸ ` (#` (#àG.€Crouth,€Aluminum€Company€of€America,€to€S.€Fruh,€EPA:ISB,€AugustÐ ¬ü  Ð7,€1992,€Transmitting€responses€to€generic€Section€114€informationÏcollection€request€for€Massena€Operations,€Tennessee€Operations,ÏWenatchee€Works,€Badin€Works,€and€Rockdale€Works€(note€toÏconfidential€file€attached).Ð ¸ (#¸ (# ÐÌII„D„18à0 ` àà0¸ ` (#` (#àG.€Scott,€Intalco€Aluminum€Corporation,€to€B.€Jordan,€EPA:ESD,€AugustÐ 4„ Ð7,€1992,€Transmitting€response€to€generic€Section€114€informationÏcollection€request.Ð ¸ (#¸ (# ÐÌII„D„19à0 ` àà0¸ ` (#` (#àR.€Pulley,€Alumax€of€South€Carolina,€to€B.€Jordan,€EPA:ESD,€August€10,Ð ä4 Ð1992,€Transmitting€response€to€generic€Section€114€information€collectionÏrequest.Ð ¸ (#¸ (# ÐÌII„D„20à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€S.€Fruh,€EPA:ISB,Ð ”ä ÐAugust€11,€1992,€Transmitting€response€to€generic€Section€114Ïinformation€collection€request.Ð ¸ (#¸ (# ÐÌII„D„21à0 ` àà0¸ ` (#` (#àG.€Graban,€Ravenswood€Aluminum€Corporation,€to€B.€Jordan,€EPA:ESD,Ð D!” ÐAugust€12,€1992,€Transmitting€response€to€generic€Section€114Ïinformation€collection€request.Ð ¸ (#¸ (# ÐÌII„D„22à0 ` àà0¸ ` (#` (#àD.€Hart,€Noranda€Aluminum,€Inc.,€to€B.€Jordan,€EPA:ESD,€August€20,Ð ô$D # Ð1992,€Transmitting€response€to€generic€Section€114€information€collectionÏrequest.Ð ¸ (#¸ (# ÐÌII„D„23à0 ` àà0¸ ` (#` (#àK.€Nadermann,€Reynolds€Metals€Company,€to€B.€Jordan,€EPA:ESD,Ð ¤(ô#' ÐAugust€24,€1992,€Transmitting€response€to€generic€Section€114Ïinformation€collection€request€for€Longview€plant.Ð ¸ (#¸ (# ÐÌÐ T,¤'+ ÐÔ& ` Ôà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`°ÒKÔÐ $ t ÐÌII„D„24à0 ` àà0¸ ` (#` (#àReynolds€Metals€Company,€to€EPA€(no€cover€letter€attached),€August€31,Ð ü L  Ð1992,€Responses€to€generic€Section€114€information€collection€request€forÏMessena€and€Troutdale€plants.Ð ¸ (#¸ (# ÐÌII„D„25à0 ` àà0¸ ` (#` (#àT.€Adamowicz,€Ormet€Corporation,€to€B.€Jordan,€EPA:ISB,€August€31,Ð ¬ü  Ð1992,€Transmitting€response€to€generic€Section€114€information€collectionÏrequest.Ð ¸ (#¸ (# ÐÌII„D„26à0 ` àà0¸ ` (#` (#àG.€Crouth,€Aluminum€Company€of€America,€to€S.€Fruh,€EPA:ISB,€AugustÐ \¬ Ð31,€1992,€Transmitting€response€to€generic€Section€114€informationÏcollection€request€for€Warrick€plant€(note€to€confidential€file€attached).Ð ¸ (#¸ (# ÐÌII„D„27à0 ` àà0¸ ` (#` (#àJ.€Flaherty,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€August€31,€1992,Ð  \ ÐTransmitting€responses€to€generic€Section€114€information€collectionÏrequests€for€Mead€and€Tacoma€plants€(2€volumes€attached).Ð ¸ (#¸ (# ÐÌII„D„28à0 ` àà0¸ ` (#` (#àF.€Rufner,€Columbia€Aluminum€Corporation,€to€B.€Jordan,€EPA:ESD,Ð ¼  ÐSeptember€18,€1992,€Transmitting€response€to€generic€Section€114Ïinformation€collection€request.Ð ¸ (#¸ (# ÐÌII„D„29à0 ` àà0¸ ` (#` (#àG.€May,€Northwest€Aluminum€Company,€to€S.€Fruh,€EPA:ISB,€SeptemberÐ l¼ Ð22,€1992,€Transmitting€response€to€generic€Section€114€informationÏcollection€request.Ð ¸ (#¸ (# ÐÌII„D„30à0 ` àà0¸ ` (#` (#àL.€McLellan,€Vanalco,€to€S.€Fruh,€EPA:ISB,€October€15,€1992,Ð #l! ÐTransmitting€response€to€generic€Section€114€information€collectionÏrequest.Ð ¸ (#¸ (# ÐÌÐ  Ì&"% ÐÔ& ` Ôà@µµ!ìàDocket€No.€A„92„60ˆÌà@++ìàPrimary€Aluminum€NESHAP€ˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`°wTÔÐ $ t ÐÌII„D„31à0 ` àà0¸ ` (#` (#àAluminum€Company€of€America,€to€EPA€(no€cover€letter€attached),Ð ü L  ÐJanuary€23,€1993,€Responses€to€followup€information€collection€requestsÏfor€Tennessee€Operations€(including€separate€test€report€attachments€forÏcarbon€plant€and€ingot€furnace),€Warrick€Operations,€Messena€Ingot€Plant,ÏWenatchee€Plant,€Badin€Works,€and€Rockdale€Plant€(note€to€confidentialÏfile€attached).Ð ¸ (#¸ (# ÐÌII„D„32à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€January€28,€1993,Ð pÀ ÐCommenting€on€Mead€and€Tacoma€data€sets€in€December€1992€draftÏNESHAP€document€and€enclosing€gaseous€fluoride€potline€data€for€theÏperiod€January€1988„November€1992.Ð ¸ (#¸ (# ÐÌII„D„33à0 ` àà0¸ ` (#` (#àJ.€Flaherty,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€January€29,€1993,Ð  \ ÐEnclosing€responses€to€followup€information€collection€request€for€MeadÏand€Tacoma€plants.Ð ¸ (#¸ (# ÐÌII„D„34à0 ` àà0¸ ` (#` (#àM.€Tanchuk,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ISB,€January€29,Ð ¼  Ð1993,€Commenting€on€emissions€data€contained€in€draft€primaryÏaluminum€document€for€Longview,€Troutdale,€and€Massena€plants.Ð ¸ (#¸ (# Ðà0  àà0` (#(#àà0¸ ` (#` (#àÐ ¸ (#¸ (# ÐII„D„35à0 ` àà0¸ ` (#` (#àR.€Pulley,€Alumax€of€South€Carolina,€to€S.€Fruh,€EPA:ISB,€February€1,Ð l¼ Ð1993,€Enclosing€response€to€followup€information€collection€request.Ð ¸ (#¸ (# ÐÌII„D„36à0 ` àà0¸ ` (#` (#àJ.€Michaelson,€Intalco€Aluminum€Corporation,€to€S.€Fruh,€EPA:ISB,Ð 0"€  ÐFebruary€1,€1993,€Enclosing€response€to€followup€information€collectionÏrequest.Ð ¸ (#¸ (# ÐÌII„D„37à0 ` àà0¸ ` (#` (#àD.€Hart,€Noranda€Aluminum,€Inc.,€to€S.€Fruh,€EPA:ISB,€February€2,€1993,Ð à%0!$ ÐEnclosing€response€to€followup€information€collection€request.Ð ¸ (#¸ (# ÐÌII„D„38à0 ` àà0¸ ` (#` (#àS.€DuBois,€Alcan€Rolled€Products€Company,€to€S.€Fruh,€EPA:ISB,Ð ¤(ô#' ÐFebruary€3,€1993,€Enclosing€response€to€followup€information€collectionÏrequest.Ð ¸ (#¸ (# ÐÌÐ T,¤'+ ÐÔ& ` Ôà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`° _ÔÐ $ t ÐÌII„D„39à0 ` àà0¸ ` (#` (#àS.€Ojala,€Vanalco,€Inc.,€to€S.€Fruh,€EPA:ISB,€February€4,€1993,€EnclosingÐ ü L  Ðresponse€to€followup€information€collection€request.Ð ¸ (#¸ (# ÐÌII„D„40à0 ` àà0¸ ` (#` (#àD.€Backfisch,€Noranda€Aluminum€Inc.,€to€S.€Fruh,€EPA:ISB,€February€5,Ð À  Ð1993,€Enclosing€corrected€fluoride€emission€results€for€generic€SectionÏ114€information€collection€request.Ð ¸ (#¸ (# ÐÌII„D„41à0 ` àà0¸ ` (#` (#àK.€Sands,€NSA„A€Division€of€Southwire€Company,€to€S.€Fruh,€EPA:ISB,Ð pÀ ÐFebruary€9,€1993,€Enclosing€response€to€followup€information€collectionÏrequest.Ð ¸ (#¸ (# ÐÌII„D„42à0 ` àà0¸ ` (#` (#àP.€Bronchetti,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ISB,€FebruaryÐ  p Ð23,€1993,€Enclosing€response€to€followup€information€collection€requestÏfor€Massena€plant€(note€to€confidential€file€attached).Ð ¸ (#¸ (# ÐÌII„D„43à0 ` àà0¸ ` (#` (#àK.€Nadermann,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ISB,€FebruaryÐ Ð  Ð25,€1993,€Enclosing€response€to€followup€information€collection€requestÏfor€Longview€plant€(note€to€confidential€file€attached).Ð ¸ (#¸ (# ÐÌII„D„44à0 ` àà0¸ ` (#` (#àR.€Winnes,€Reynolds€Metals€Company,€to€S.€Fruh,€March€1,€1993,Ð €Ð ÐEnclosing€response€to€followup€information€collection€request€forÏTroutdale€plant€(note€to€confidential€file€attached).Ð ¸ (#¸ (# ÐÌII„D„45à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€EPA€(no€cover€letterÐ 0"€  Ðattached),€received€March€17,€1993,€Response€to€followup€informationÏcollection€request.Ð ¸ (#¸ (# ÐÌII„D„46à0 ` àà0¸ ` (#` (#àM.€Tanchuk,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ISB,€March€30,Ð à%0!$ Ð1993,€Stating€that€total€direct€and€indirect€operating€cost€figures€containedÏin€response€to€followup€information€collection€request€are€not€confidentialÏbusiness€information.Ð ¸ (#¸ (# ÐÌÌâ âÐ h+¸&* ÐÔ& ` Ôâ âà@µµ!ìàDocket€No.€A„92„60ˆÌâ âà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`°iÔÐ $ t ÐÌII„D„47à0 ` àà0¸ ` (#` (#àR.€Carwile,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ISB,€April€16,Ð ü L  Ð1993,€Alerting€EPA€of€approval€of€Alcan€roof€sampling€method€forÏprimary€potline€roofs€as€alternative€to€Method€14.Ð ¸ (#¸ (# ÐÌII„D„48à0 ` àà0¸ ` (#` (#àG.€May,€Northwest€Aluminum€Company,€to€S.€Fruh,€EPA:ISB,€May€4,Ð ¬ü  Ð1993,€Enclosing€response€to€followup€information€collection€request.Ð ¸ (#¸ (# ÐÌII„D„49à0 ` àà0¸ ` (#` (#àJ.€Steward,€Eastalco€Aluminum€Company,€to€S.€Fruh,€May€6,€1993,Ð pÀ ÐEnclosing€response€to€followup€information€collection€request.Ð ¸ (#¸ (# ÐÌII„D„50à0 ` àà0¸ ` (#` (#àG.€Graban,€Ravenswood€Aluminum€Corporation,€to€S.€Fruh,€EPA:ISB,Ð 4„ ÐMay€7,€1993,€Enclosing€response€to€followup€information€collectionÏrequest€(note€to€confidential€file€attached).Ð ¸ (#¸ (# ÐÌII„D„51à0 ` àà0¸ ` (#` (#àF.€Rufner,€Columbia€Aluminum€Corporation,€to€S.€Fruh,€EPA:ISB,€MayÐ ä4 Ð12,€1993,€Enclosing€response€to€followup€information€collection€request.Ð ¸ (#¸ (# ÐÌII„D„52à0 ` àà0¸ ` (#` (#àM.€Tanchuk,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ISB,€May€19,Ð ¨ø Ð1993,€Transmitting€PAH€data€for€soderberg€and€prebake€plants.Ð ¸ (#¸ (# ÐÌII„D„53à0 ` àà0¸ ` (#` (#àJ.€Reggi,€Ormet€Corporation,€to€S.€Fruh,€EPA:ISB,€June€16,€1993,Ð l¼ ÐEnclosing€response€to€followup€information€collection€request€(note€toÏconfidential€file€attached).Ð ¸ (#¸ (# ÐÌII„D„54à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€S.€Fruh,€EPA:ISB,Ð #l! ÐSeptember€9,€1993,€Discussing€subcategorization€and€emission€samplingÏand€analyses.Ð ¸ (#¸ (# ÐÌII„D„55à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€S.€Fruh,€EPA:ISB,Ð Ì&"% ÐSeptember€15,€1993,€Transmitting€information€on€total€fluoride€emissionsÏby€potline€for€period€of€January€1989€„€December€1992.Ð ¸ (#¸ (# Ðâ âÐ )à$( ÐÔ& L Ôâ âÌà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌâ âà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'L°=sÔÐ  ` ÐÌII„D„56à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€S.€Fruh,€EPA:ISB,Ð è 8  ÐOctober€4,€1993,€Transmitting€roof€monitor€cost€information.Ð ¸ (#¸ (# ÐÌII„D„57à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€October€20,€1993,Ð ¬ü  ÐDiscussing€sampling€methods€at€Mead€and€Tacoma€plants.Ð ¸ (#¸ (# ÐÌII„D„58à0 ` àà0¸ ` (#` (#àM.€Palazzolo,€Aluminum€Company€of€America,€to€R.€Segall,€EPA:EMB,Ð pÀ ÐJune€3,€1994,€Requesting€review€of€test€plan€for€evaluation€of€an€eight„¼point€sampling€manifold€and€IMS€system€at€Newburgh,€Indiana€facility.Ð ¸ (#¸ (# ÐÌII„D„59à0 ` àà0¸ ` (#` (#àM.€Tanchuck,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ESD,€June€6,Ð  p Ð1994,€Providing€information€on€cost€of€emission€reduction€at€St.€LawrenceÏplant€with€a€new€dry/wet€scrubbing€system.Ð ¸ (#¸ (# ÐÌII„D„60à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€K.€Durkee,€EPA:ESD,Ð Ð  ÐJune€8,€1994,€Providing€information€on€work€practices€and€capitalÏimprovements€affecting€emissions.Ð ¸ (#¸ (# ÐÌII„D„61à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€June€15,€1994,Ð €Ð ÐProviding€information€on€secondary€or€roof€emissions€from€smelters€andÏcontrol€costs.Ð ¸ (#¸ (# ÐÌII„D„62à0 ` àà0¸ ` (#` (#àW.€Wooster,€Columbia€Aluminum€Corporation,€to€K.€Durkee,€EPA:ISB,Ð 0"€  ÐJune€21,€1994,€Response€to€MACT€work€practices€questionnaire€asÏsolicited€through€the€Aluminum€Association.Ð ¸ (#¸ (# ÐÌII„D„63à0 ` àà0¸ ` (#` (#àH.€Givens,€Alcan€Ingot,€to€K.€Durkee,€EPA:ISB,€June€21,€1994,€ResponseÐ à%0!$ Ðto€MACT€work€practices€questionnaire€for€Sebree€plant€as€solicitedÏthrough€the€Aluminum€Association.Ð ¸ (#¸ (# ÐÌÌÌÌÐ T,¤'+ Їà0  àà0` (#(#àà0¸ ` (#` (#àà@µµ!ì¸ (#¸ (#àDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌII„D„64à0 ` àà0¸ ` (#` (#àT.€Russell,€Entropy,€Inc.,€to€L.€Williams,€The€Aluminum€Association,€JulyÐ ü L  Ð1,€1994,€Enclosing€final€emission€test€report€for€Northwest€AluminumÏCompany€and€discussion€of€POM€method€with€summary€tables€(POMÏenclosure€attached;€for€final€test€report,€see€€II„I„25€and€II„I„26).Ð ¸ (#¸ (# ÐÌII„D„65à0 ` àà0¸ ` (#` (#àR.€Logan,€Ravenswood€Aluminum€Corporation,€to€S.€Fruh,€EPA:ESD,Ð ˜è  ÐJuly€26,€1994,€Response€to€EPA€request€for€information€on€cost€ofÏachieving€emission€reductions.Ð ¸ (#¸ (# ÐÌII„D„66à0 ` àà0¸ ` (#` (#àKaiser€Aluminum,€Ravenswood€Aluminum,€and€Reynolds€MetalsÐ H˜ ÐCompany,€to€EPA:OAQPS€(no€cover€letter€attached),€July€27,€1994,ÏEnclosing€"Development€of€Clean€Air€Act€Amendments€112(d)€HazardousÏAir€Pollutant€Standards€for€the€Primary€Aluminum€Industry:€€Proposal€forÏSetting€Standards€for€Horizontal€Stud€Soderberg€and€Centerwork€PrebakeÏ„€2€Subcategories."Ð ¸ (#¸ (# ÐÌII„D„67à0 ` àà0¸ ` (#` (#àH.€Hays,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ISB,€July€29,€1994,Ð ¼  ÐProviding€information€in€response€to€issues€and€questions€from€June€6thÏmeeting€and€to€request€for€cost€estimates.Ð ¸ (#¸ (# ÐÌII„D„68à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€August€25,€1994,Ð l¼ ÐEnclosing€analysis€indicating€no€correlation€between€POM€and€TF€atÏTacoma€plant.Ð ¸ (#¸ (# ÐÌII„D„69à0 ` àà0¸ ` (#` (#àW.€Wooster,€Columbia€Aluminum€Corporation,€to€T.€Mix,€WashingtonÐ #l! ÐDepartment€of€Ecology,€and€S.€Fruh,€EPA:ISB,€August€26,€1994,ÏEnclosing€fluoride€emission€data€for€each€potline.Ð ¸ (#¸ (# ÐÌII„D„70à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€M.€Branscome,€Research€TriangleÐ Ì&"% ÐInstitute,€September€14,€1994,€Enclosing€gaseous€fluoride€dataÏcorresponding€to€total€fluoride€data€previously€submitted.Ð ¸ (#¸ (# ÐÌÌÌÐ T,¤'+ Ðà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌII„D„71à0 ` àà0¸ ` (#` (#àT.€Mix,€Washington€Department€of€Ecology,€to€S.€Fruh,€EPA:ISB,Ð ü L  ÐSeptember€16,€1994,€Enclosing€individual€potline€fluoride€emissions€dataÏfor€Reynolds,€Intalco,€and€Alcoa„Wenatchee.Ð ¸ (#¸ (# ÐÌII„D„72à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€September€22,€1994,Ð ¬ü  ÐEnclosing€final€report€for€sampling€at€Tacoma€Works€and€a€report€on€plantÏoperations€during€testing€(for€final€reports,€see€II„I„29€and€II„I„30).Ð ¸ (#¸ (# ÐÌII„D„73à0 ` àà0¸ ` (#` (#àB.€Leder,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ISB,€October€28,€1994,Ð \¬ ÐEnclosing€materials€on€total€fluoride€as€the€basis€for€potroom€standardsÏand€the€implications€for€gaseous€fluoride€monitoring€to€be€discussed€atÏNovember€meeting€with€EPA.Ð ¸ (#¸ (# ÐÌII„D„74à0 ` àà0¸ ` (#` (#àD.€Hart,€Noranda€Aluminum,€Inc.,€to€S.€Fruh,€EPA:ISB,€November€8,Ð øH Ð1994,€Attaching€TF€and€GF€data€for€West€potroom€group€roof€for€1993Ïand€1994€along€with€historical€TF€and€GF€data€for€anode€bake€furnace.Ð ¸ (#¸ (# ÐÌII„D„75à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum€and€Chemical€Corporation,€to€S.€Fruh,Ð ¨ø ÐEPA:ESD,€November€11,€1994,€Transmitting€final€emission€test€report€forÏMead€Works€and€report€on€plant€operations€during€testing€(for€final€testÏreports,€see€II„I„33€and€II„I„34).Ð ¸ (#¸ (# ÐÌII„D„76à0 ` àà0¸ ` (#` (#àL.€Williams,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ISB,€NovemberÐ D!” Ð22,€1994,€Enclosing€issue€paper€on€use€of€wet€roof€scrubbers.Ð ¸ (#¸ (# ÐÌII„D„77à0 ` àà0¸ ` (#` (#àJ.€S.€Loran,€et€al.,€St.€Regis€Mohawk€Tribe,€to€Administrator€Browner,Ð $X" ÐDecember€8,€1994,€Expressing€concern€at€EPA€failure€to€invite€Tribe€toÏparticipate€in€Share„A„Mact€meetings.Ð ¸ (#¸ (# ÐÌII„D„78à0 ` àà0¸ ` (#` (#àW.€Wooster,€Columbia€Aluminum€Corporation,€to€S.€Fruh,€EPA:ESD,Ð ¸'#& ÐJanuary€3,€1995,€Discussing€paste€plant€emissions€(for€report€enclosure,Ïsee€II„I„32).Ð ¸ (#¸ (# ÐÌà@µµ!ìàDocket€No.€A„92„60ˆÐ h+¸&* Ðà@DDìàPrimary€Aluminum€NESHAPˆÐ T,¤'+ Ðà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionÐ L œ ÐÌóóII„D„79à0 ` àà0¸ ` (#` (#àD.€Hart,€Noranda€Aluminum,€to€S.€Fruh,€EPA:ESD,€January€13,€1995,Ð $ t ÐEnclosing€final€emission€test€report€and€discussing€results.Ð ¸ (#¸ (# ÐÌII„D„80à0 ` àà0¸ ` (#` (#àJ.€Griffin,€Norsk€Hydro,€to€S.€Fruh,€EPA:ESD,€January€17,€1995,€HFÐ è 8  Ðmonitoring€system.Ð ¸ (#¸ (# ÐÌII„D„81à0 ` àà0¸ ` (#` (#àR.€Pulley,€Alumax,€to€M.€Branscome,€Research€Triangle€Institute,Ð ¬ü  ÐFebruary€13,€1995,€Transmitting€bake€oven€scrubber€emission€samplingÏresults.Ð ¸ (#¸ (# ÐÌII„D„82à0 ` àà0¸ ` (#` (#àH.€Givens,€Alcan€Ingot,€to€M.€Branscome,€Research€Triangle,€February€14,Ð \¬ Ð1995,€Enclosing€petition€submitted€to€EPA€to€establish€equivalencyÏbetween€Alcan€Cassette€Method€and€EPA€Method€14.Ð ¸ (#¸ (# ÐÌII„D„83à0 ` àà0¸ ` (#` (#àG.€Scott,€Intalco€Aluminum€Corporation,€to€M.€Branscome,€ResearchÐ  \ ÐTriangle€Institute,€February€16,€1995,€Enclosing€computer€run€of€all€dataÏfrom€potline€dry€system€and€potline€wet€scrubber€system€for€1990„1993.Ð ¸ (#¸ (# ÐÌII„D„84à0 ` àà0¸ ` (#` (#àR.€Strieter,€The€Aluminum€Association,€to€S.€Fruh,à0 ¸ (#¸ (#àà0x (# (#àà0Ð x(#x(#àEPA:EÐ ¼  ÐSD,ÏMarchÏ14,Ï1995,ÏComm¼entingÏonÏdraftÏmeetin¼gÏsumma¼ry€andÏemissi¼onÏaveragi¼ngÏprovisi¼ons.€ÐT,¤'+Ð (#Ð (# ÐII„D„85à0 ` àà0¸ ` (#` (#àW.€Hill,€Southwire€Company,€to€M.€McKeever,€EPA:ESD,€May€23,€1995,Ð ° ÐDiscussing€request€for€subcategory€for€producers€of€highÏpurity/conductivity€aluminum.Ð ˆØ¸ (#¸ (# Ðà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionÐ $ t ÐÌóóII„D„86à0 ` àà0¸ ` (#` (#àR.€Strieter,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ESD,€January€23,Ð ü L  Ð1995,€Enclosing€paper€on€monitoring€options€for€review€("EnhancedÏMonitoring€Proposal€for€Potroom€Sources"€attached.)Ð ¸ (#¸ (# ÐÌII„D„87à0 ` àà0¸ ` (#` (#àR.€Strieter,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ESD,€April€7,Ð ¬ü  Ð1995,€Enclosing€issue€papers€for€review€("Generic€MACT€Issues"€andÏ"MACT€Structure"€for€subcategories€attached).Ð ¸ (#¸ (# ÐÌII„D„88à0 ` àà0¸ ` (#` (#àJ.€Privitera,€McNamee,€Lochner,€Titus€&€Williams,€to€S.€Fruh,€EPA:ESD,Ð \¬ ÐApril€21,€1995,€Comments€on€draft€technical€support€document€forÏproposed€MACT€standards€with€attached€letter€from€L.€Benedict,€St.€RegisÏMohawk€Tribe,€commenting€on€standards.Ð ¸ (#¸ (# ÐÌII„D„89à0 ` àà0¸ ` (#` (#àD.€Hart,€Noranda€Aluminum,€to€S.€Fruh,€EPA:ESD,€April€28,€1995,Ð øH ÐTransmitting€data€on€3,€6,€and€12€month€average€for€compliance€withÏlongterm€average€for€potline€number€3€roof€(attached).Ð ¸ (#¸ (# ÐÌII„D„90à0 ` àà0¸ ` (#` (#àR.€Strieter,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ESD,€May€1,Ð ¨ø Ð1995,€Commenting€on€draft€technical€support€document€for€proposedÏMACT€standards.Ð ¸ (#¸ (# ÐÌII„D„91à0 ` àà0¸ ` (#` (#àC.€Kucera,€Alumax€Inc.,€to€S.€Fruh,€EPA:ESD,€May€24,€1995,Ð X ¨ ÐCommenting€on€Mt.€Holly€data€and€statistical€distribution,€reducedÏmonitoring€frequency,€liquid€pitch€tank€control,€wet€scrubber€sampling,Ïautomatic€analyzers€for€fluoride,€and€wet€scrubber€freeze„up€(attachmentsÏinclude:€€(1)€Potline€roof€monitor€fluoride€data,€1992„1994;€(2)Ïcorrespondence€on€reduced€monitoring€dry€scrubbers€from€EPA€Region€IVÏand€the€South€Carolina€Department€of€Health€and€Environmental€ControlÏwith€enclosures,€including€"Characterization€of€Fluoride€Emissions€from€aÏPrimary€Aluminum€Plant€and€Justification€of€a€Reduced€Performance€TestÏFrequency"€by€Radian€Corporation;€(3)€òòFederal€Registeróó€notice€of€approvalÐ ¤(ô#' Ðfor€alternative€Ð )à$(¸ (#¸ (# Ðà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌà0  àà0` (#(#àà0¸ ` (#` (#àmethod;€(4)€ASTM€D€3270„80,€Standard€Method€of€Analysis€for€FluorideÏContent€of€the€Atmosphere€and€Plant€Tissues€(Semiautomated€Method);Ïand€(5)€"Measurement€of€Emissions€from€Pitch€Storage€Tanks",€byÏGeneral€Engineering€Laboratories,€Inc.)Ð ¸ (#¸ (# ÐÌII„D„92à0 ` àà0¸ ` (#` (#àK.€Sands,€NSA,€to€S.€Fruh,€EPA:ESD,€May€30,€1995,€Discussing€liquidÐ ˜è  Ðpitch€handling.Ð ¸ (#¸ (# ÐÌII„D„93à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ESD,€May€30,€1995,Ð \¬ ÐDiscussing€transfer€and€storage€of€heated€liquid€pitch.Ð ¸ (#¸ (# ÐÌII„D„94à0 ` àà0¸ ` (#` (#àD.€Hart,€Noranda€Aluminum,€to€S.€Fruh,€EPA:ESD,€May€31,€1995,Ð  p ÐDiscussing€liquid€pitch€transfer€operations.Ð ¸ (#¸ (# ÐÌII„D„95à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ESD,€May€31,€1995,Ð ä4 ÐEnclosing€updated€total€fluoride€emissions€data€from€Mead€and€TacomaÏby€Methods€13€and€14€(attached).Ð ¸ (#¸ (# ÐÌII„D„96à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€S.€Fruh,€EPA:ESD,Ð ”ä ÐJune€5,€1995,€Discussing€liquid€pitch€transfer€and€storage.Ð ¸ (#¸ (# ÐÌII„D„97à0 ` àà0¸ ` (#` (#àWashington€Department€of€Ecology,€to€S.€Fruh,€EPA:ESD,€June€5,€1995,Ð X ¨ ÐComments€on€EPA's€draft€technical€support€document€for€the€developmentÏof€MACT€standards€for€the€primary€aluminum€industry.Ð ¸ (#¸ (# ÐÌII„D„98à0 ` àà0¸ ` (#` (#àR.€Strieter,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ESD,€June€23,Ð $X" Ð1995,€Enclosing€potroom€emissions€paper,€"Estimation€of€PrimaryÏCollection€Efficiency€of€New€or€Retrofit€Hooding€for€Primary€AluminumÏCells".Ð ¸ (#¸ (# ÐÌII„D„99à0 ` àà0¸ ` (#` (#àR.€Strieter,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ESD,€August€16,Ð ¤(ô#' Ð1995,€Enclosing€comments€on€draft€proposed€rule€for€emissions€fromÏprimary€aluminum€reduction€plants€(attachments€include:€€(1)ÏRecommended€language€revisions€to€draft€preamble;€(2)€Paper,€"AnalysisÏof€the€ÐT,¤'+¸ (#¸ (# Їà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌà0  àà0` (#(#àà0¸ ` (#` (#àCharacteristics€of€Total€Fluoride€Emissions€from€U.S.€Aluminum€Plants"Ïby€C.€James€Sample,€Ph.D;€(3)€Statistical€Basis€for€Potline€EmissionÏStandard.Ð ¸ (#¸ (# ÐÌII„D„100à0 ` àà0¸ ` (#` (#àS.€Clark,€Texas€Natural€Resource€Conservation€Commission,€to€S.€Fruh,Ð ¬ü  ÐEPA:OAQPS,€September€13,€1995,€Enclosing€comments€on€issues€forÏdraft€primary€aluminum€MACT€standard€(attached).Ð ¸ (#¸ (# ÐÌII„D„101à0 ` àà0¸ ` (#` (#àG.€Green,€Oregon€Department€of€Environmental€Quality,€to€S.€Fruh,Ð \¬ ÐEPA:ESD,€November€21,€1995,€Commenting€on€draft€primary€aluminumÏMACT€standard.Ð ¸ (#¸ (# ÐÌII„D„102à0 ` àà0¸ ` (#` (#àWashington€Department€of€Ecology€(no€cover€letter€attached),€to€S.€Fruh,Ð  \ ÐEPA:ESD,€September€22,€1995,€Comments€on€draft€primary€aluminumÏMACT€rule€package.Ð ¸ (#¸ (# ÐÌII„D„103à0 ` àà0¸ ` (#` (#àWashington€Department€of€Ecology€(no€cover€letter€attached),€to€S.€Fruh,Ð ¼  ÐEPA:ESD,€September€22,€1995€(received),€Preliminary€review€of€healthÏeffects€associated€with€aluminum€smelter€emissions.Ð ¸ (#¸ (# ÐÌII„D„104à0 ` àà0¸ ` (#` (#àNSA€(no€cover€letter€atttached),€to€S.€Fruh,€EPA:ESD,€September€26,Ð l¼ Ð1995,€Comments€on€basis€and€purpose€document€for€the€development€ofÏproposed€standards€for€the€primary€aluminum€industry.Ð ¸ (#¸ (# ÐÌII„D„105à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ESD,€November€6,€1995,Ð #l! ÐDiscussing€data€analysis€for€HSS€and€CWPB2€subcategories€(data€andÏanalyses€attached).Ð ¸ (#¸ (# ÐÌII„D„106à0 ` àà0¸ ` (#` (#àW.€Wooster,€Columbia€Aluminum€Corporation,€to€S.€Fruh,€EPA:ESD,Ð Ì&"% ÐNovember€7,€1995,€Primary€and€secondary€TF€results€in€lb/tap,€andÏprojected€MACT€compliance€values.Ð ¸ (#¸ (# ÐÌII„D„107à0 ` àà0¸ ` (#` (#àD.€Hart,€Noranda€Aluminum,€Inc.,€to€S.€Fruh,€EPA:ESD,€November€8,Ð |*Ì%) Ð1994,€Transmitting€TF€and€GF€data€for€west€potroom€group€roof€for€1993„¼1994€à@ìì*ì¸ (#¸ (#àˆÐ T,¤'+ Їà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌà0  àà0` (#(#àà0¸ ` (#` (#àwith€historical€TF€and€GF€data€for€anode€bake€furnace€no.€3€(attached).Ð ¸ (#¸ (# ÐÌII„D„108à0 ` àà0¸ ` (#` (#àW.€Wooster,€Columbia€Aluminum€Corporation,€to€S.€Fruh,€EPA:ESD,Ð Ô$  ÐNovember€29,€1995,€Enclosing€position€paper€on€VSS1€standardÏ(attached).Ð ¸ (#¸ (# ÐÌII„D„109à0 ` àà0¸ ` (#` (#àE.€Smith,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ESD,€December€5,Ð „Ô  Ð1995,€Attaching€press€release€summarizing€agreement€with€St.€RegisÏMohawk€Tribe€to€resolve€environmental€dispute.Ð ¸ (#¸ (# ÐÌII„D„110à0 ` àà0¸ ` (#` (#àInahare,€Oregon€Department€of€Environmental€Quality,€to€S.€Fruh,Ð 4„ ÐEPA:ESD,€December€5,€1995,€Transmitting€Reynold's€method,€"PotroomÏRoof€Vent€Monitoring€at€Troutdale€Plant"€(attached).Ð ¸ (#¸ (# ÐÌII„D„111à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€January€4,€1996,€Discussing€use€ofÐ ä4 Ð"t"€statistic€rather€than€"z"€statistic€for€data€analyses.Ð ¸ (#¸ (# ÐÌII„D„112à0 ` àà0¸ ` (#` (#àD.€Ryan,€Columbia€Falls€Aluminum€Company,€to€T.€Harrison,€EPA:EMC,Ð ¨ø ÐJanuary€17,€1996,€Enclosing€POM€potroom€data€from€room€9€roof€vent.Ð ¸ (#¸ (# ÐÌII„D„113à0 ` àà0¸ ` (#` (#àE.€Smith,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ESD,€February€12,Ð l¼ Ð1996,€Commenting€on€primary€aluminum€MACT€draft€proposal.Ð ¸ (#¸ (# ÐÌII„D„114à0 ` àà0¸ ` (#` (#àS.€Mrazek,€Vanalco,€Inc.,€to€S.€Fruh,€EPA:PPSG,€February€16,€1996,€CostÐ 0"€  Ðestimates€for€green€mill€dry€coke€scrubber.Ð ¸ (#¸ (# ÐÌII„D„115à0 ` àà0¸ ` (#` (#àE.€Smith,€Reynolds€Metals€Company,€to€S.€Fruh,€EPA:ESD,€February€26,Ð ô$D # Ð1996,€Summarizing€discussions€of€earlier€meeting€with€EPA€on€primaryÏaluminum€draft€proposal€and€providing€followup€comments€andÏinformation.Ð ¸ (#¸ (# ÐÌII„D„116à0 ` àà0¸ ` (#` (#àH.€Leighty,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ESD,€March€1,Ð )à$( Ð1996,€Commenting€on€EPA€primary€aluminum€draft€proposal.Ð ¸ (#¸ (# ÐÌÐ T,¤'+ Ðà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„DˆÌà@  ìàEPA€Correspondence€from€Outside€PersonsˆÌà@ìì*ìàˆÌòòDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌII„D„117à0 ` àà0¸ ` (#` (#àB.€Leber,€Kaiser€Aluminum,€to€S.€Fruh,€EPA:ESD,€March€1,€1996,Ð ü L  ÐEnclosing€total€fluoride€data€for€HSS€potline€at€Tacoma.Ð ¸ (#¸ (# ÐÌII„D„118à0 ` àà0¸ ` (#` (#àG.€Prescott,€Longview€Federated€Aluminum€Council,€to€S.€Fruh,Ð À  ÐEPA:ESD,€March€1,€1996,€Commenting€on€EPA€primary€aluminum€draftÏproposal.Ð ¸ (#¸ (# ÐÌII„D„119à0 ` àà0¸ ` (#` (#àR.€Strieter,€The€Aluminum€Association,€to€S.€Fruh,€EPA:ESD,€April€4,Ð pÀ Ð1996,€Enclosing€primary€aluminum€cost€analysis€prepared€by€C.J.€SampleÏentitled,€"Findings€from€a€Survey€of€Aluminum€Companies€of€theÏProjected€Costs€of€Compliance€with€the€Proposed€EPA€PrimaryÏAluminum€MACT€Rulemaking".Ð ¸ (#¸ (# ÐÐ   \ ÐÔ& L ÔØØÑ€Ñà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@HH"ìàSubcategory€II„EˆÌà@x x ìàEPA€Memoranda€and€Telephone€ConversationsˆÌà@ ìàwith€Outside€Persons€òòˆÐ 8 ˆ ÐÌDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'L°àÇÔÐ  ` ÐÌII„E„1à0  àà0` (#(#àJ.€Cole,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€January€31,€1992,Ð è 8  ÐMeeting€of€EPA/RTI€and€Aluminum€Association€representatives.Ð ` (#` (# ÐÌII„E„2à0  àà0` (#(#àP.€Lowen,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€January€27,€1993,Ð ¬ü  ÐMeeting€with€Aluminum€Association€representatives.Ð ` (#` (# ÐÌII„E„3à0  àà0` (#(#àP.€Lowen,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€February€24,€1993,Ð pÀ ÐMeeting€with€Aluminum€Association€representatives.Ð ` (#` (# ÐÌII„E„4à0  àà0` (#(#àP.€Lowen,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€March€26,€1993,Ð 4„ ÐMeeting€with€Aluminum€Association€representatives.Ð ` (#` (# ÐÌII„E„5à0  àà0` (#(#àD.€Johnston,€Research€Triangle€Institute,€to€docket,€May€19,€1993,€Summary€ofÐ øH Ðtelephone€conversation€with€Ron€Logan,€Ravenswood€Aluminum€Corporation,Ïregarding€potline€current€efficiency€and€data€sources.Ð ` (#` (# ÐÌII„E„6à0  àà0` (#(#àK.€Ours,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€April€29,€1994,Ð ¨ø ÐSummary€of€meeting€with€Hydro€Aluminum€representatives€(vendor€brochureÏattached).Ð ` (#` (# ÐÌII„E„7à0  àà0` (#(#àK.€Ours,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€May€20,€1994,Ð X ¨ ÐSummary€of€meeting€with€aluminum€industry€representatives.Ð ` (#` (# ÐÌII„E„8à0  àà0` (#(#àK.€Ours,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€July€6,€1994,€SummaryÐ #l! Ðof€meeting€with€Columbia€Falls€Aluminum€Company€representatives.Ð ` (#` (# ÐÌII„E„9à0  àà0` (#(#àK.€Ours,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€July€15,€1994,Ð à%0!$ ÐSummary€of€meeting€with€aluminum€industry€representatives.Ð ` (#` (# ÐÌII„E„10à0 ` àà0¸ ` (#` (#àK.€Ours,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:ISB,€August€10,Ð ¤(ô#' Ð1994,€Summary€of€meeting€with€aluminum€industry€representatives.Ð ¸ (#¸ (# ÐÌÑ  Ñà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÐ @-(, Ðà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@HH"ìàSubcategory€II„EˆÌà@x x ìàEPA€Memoranda€and€Telephone€ConversationsˆÌà@ ìàwith€Outside€Persons€òòˆÐ tÄ ÐÌDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ L œ Ðà@ìì*ìàˆÌII„E„11à0 ` àà0¸ ` (#` (#àK.€Ours€and€M.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,Ð $ t ÐEPA:OAQPS,€November€7,€1994,€Summary€of€meeting€with€aluminumÏindustry€representatives.Ð ¸ (#¸ (# ÐÌII„E„12à0 ` àà0¸ ` (#` (#àK.€Ours€and€M.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,Ð Ô$  ÐEPA:OAQPS,€November€21,€1994,€Summary€of€meetings€with€ColumbiaÏFalls€Aluminum€Company.Ð ¸ (#¸ (# ÐÌII„E„13à0 ` àà0¸ ` (#` (#àK.€Ours€and€M.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,Ð „Ô  ÐEPA:OAQPS,€November€21,€1994,€Summary€of€meeting€with€aluminumÏcompany€representatives.Ð ¸ (#¸ (# ÐÌII„E„14à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PPSG,Ð 4„ ÐFebruary€3,€1995,€Meeting€summary€„„€Alcoa,€Hydro,€Entropy,€and€EPA€toÏdiscuss€continuous€emission€monitoring€tests.Ð ¸ (#¸ (# ÐÌII„E„15à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PPSG,€MarchÐ ä4 Ð22,€1995,€Meeting€summary€„„€aluminum€company€representatives€andÏEPA€to€discuss€the€MACT€test€program€results.Ð ¸ (#¸ (# ÐÌII„E„16à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PSSG,€MarchÐ ”ä Ð30,€1995,€Meeting€summary€„„€Aluminum€Association,€State€Partners,€andÏEPA€to€discuss€options€for€enhanced€monitoring.Ð ¸ (#¸ (# ÐÌII„E„17à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PSSG,€MayÐ D!” Ð11,€1995,€Meeting€summary€„„€Aluminum€Association,€State€Partners,€andÏEPA€to€discuss€primary€aluminum€MACT.Ð ¸ (#¸ (# ÐÌII„E„18à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PSSG,€JuneÐ ô$D # Ð14,€1995,€Meeting€summary€„„€Aluminum€Association,€State€Partners,€andÏEPA€to€discuss€primary€aluminum€MACT.Ð ¸ (#¸ (# ÐÐ  ¸'#& Ðà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@HH"ìàSubcategory€II„EˆÌà@x x ìàEPA€Memoranda€and€Telephone€ConversationsˆÌà@ ìàwith€Outside€Persons€òòˆÐ 8 ˆ ÐÌDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ  ` ÐÌII„E„19à0 ` àà0¸ ` (#` (#àJ.€King,€EPA:OAQPS,€to€files,€September€27,€1995,€Summary€ofÐ è 8  Ðtelephone€conversation€with€R.€Coley,€Bureau€of€the€Census.Ð ¸ (#¸ (# ÐÌII„E„20à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PPSG,Ð ¬ü  ÐJanuary€16,€1996,€Meeting€summary€„„€Aluminum€Association,€StateÏPartners,€and€EPA€to€discuss€data€for€small€center„worked€prebakeÏpotlines€(CWPB2).Ð ¸ (#¸ (# ÐÌII„E„21à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PPSG,Ð H˜ ÐJanuary€16,€1996,€Meeting€summary€„„€Aluminum€Association,€StateÏPartners,€and€EPA€to€discuss€primary€aluminum€MACT.Ð ¸ (#¸ (# ÐÌII„E„22à0 ` àà0¸ ` (#` (#àS.€Fruh,€EPA:ESD,€to€Attendees,€September€30,€1994,€Summary€ofÐ øH ÐPresumptive€MACT€meeting€for€primary€aluminum€Share„A„MACT.Ð ¸ (#¸ (# ÐÌII„E„23à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PPSG,€MayÐ ¼  Ð13,€1996,€Summary€of€EPA/The€Aluminum€Association€meeting€toÏdiscuss€primary€aluminum€MACT.Ð ¸ (#¸ (# ÐÌII„E„24à0 ` àà0¸ ` (#` (#àM.€Branscome,€Research€Triangle€Institute,€to€S.€Fruh,€EPA:PPSG,€MayÐ l¼ Ð13,€1996,€Summary€of€EPA/The€Aluminum€Association€meeting€toÏdiscuss€primary€aluminum€MACT.Ð ¸ (#¸ (# ÐÐ  0"€  ÐÑ7€ñXXdÈXXdÈ7ÑÑ€ ÑØØà@µµ!ìàDocket€No.€A„92„60ˆÐ ° Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„HˆÌà@ÒÒ!ìàInteragency€ReviewˆÌòòÌÌDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ  ` ÐÌII„H„1à0  àà0` (#(#àM.€Nichols,€EPA:OAQPS,€to€D.€Gardiner,€EPA:OPPE,€March€29,€1996,€MaterialsÐ è 8  Ðfor€submittal€to€U.S.€Office€of€Management€and€Budget€(draft€preamble,€rule,ÏBasis€and€Purpose€Document,€SF„83/supporting€statement,€and€E.O.€12866€andÏE.O€12612€certifications€attached).Ð ` (#` (# ÐÌII„H„2à0  àà0` (#(#àProposed€preamble,€rule,€and€Basis€and€Purpose€Document,€signed€August€22,Ð „Ô  Ð1996Ð pÀ` (#` (# ÐØØÑ€ ÑÑ € Ñà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@=="ìàSubcategory€II„HˆÌà@ÒÒ!ìàInteragency€ReviewˆÌòòÌDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ $ t ÐÌII„H„2à0  àà0` (#(#àProposed€preamble,€rule,€and€Basis€and€Purpose€Document,€signed€August€22,Ð ü L  Ð1996.Ð #è 8 ` (#` (#^ #ÐÔ& ` ÔØØÑ€ Ñà@µµ!ìàDocket€No.€A„92„60ˆÌà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@ff"ìàSubcategory€II„IˆÌà@ÇÇ!ìàReference€MaterialsˆÌòòÌDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÔ'`°;êÔÐ $ t ÐÌII„I„1à0  àà0` (#(#àState€air€rules€and€permit€data€for€Washington,€Maryland,€Oregon,€Tennessee,Ð ü L  ÐWest€Virginia,€New€York,€Texas,€Ohio,€North€Carolina,€and€South€Carolina,Ïundated.Ð ` (#` (# ÐÌII„I„2à0  àà0` (#(#àEvolution€of€Fluoride€Recovery€Processes€Alcoa€Smelters,€C.€Cook€and€G.Ð ¬ü  ÐSwany,€Light€Metals,€vol.€2,€1971,€pp.€465„477.Ð ` (#` (# ÐÌII„I„3à0  àà0` (#(#àOperating€Experience€with€the€Alcoa€398€Process€for€Fluoride€Recovery,€C.€CookÐ pÀ Ðet€al.,€Aluminum€Company€of€America,€Journal€of€the€Air€Pollution€ControlÏAssociation,€vol.€21,€no.€8,€August€1971,€pp.€479„483.Ð ` (#` (# ÐÌII„I„4à0  àà0` (#(#àAir€Pollution€Abatement€on€Primary€Aluminum€Potlines:€€Effectiveness€and€Cost,Ð  p ÐD.€Rush€et€al.,€Journal€of€the€Air€Pollution€Control€Association,€vol.€23,€no.€2,Ï1973,€pp.€98„104.Ð ` (#` (# ÐÌII„I„5à0  àà0` (#(#àRecovery€of€Hydrogen€Fluoride€Fumes€on€Alumina€in€Aluminum€Smelting,€C.N.Ð Ð  ÐCochran,€Alcoa€Laboratories,€Environmental€Science€and€Technology,€vol.€8,€no.Ï1,€January€1974,€pp.€63„66.Ð ` (#` (# ÐÌII„I„6à0  àà0` (#(#àFluoride€Emissions€Control:€€Updated€Costs€for€New€Aluminum€ReductionÐ €Ð ÐPlants,€International€Primary€Aluminum€Institute€Environmental€CommitteeÏReport,€February€1985,€Chapters€8„10,€6€pp.Ð ` (#` (# ÐÌII„I„7à0  àà0` (#(#àCapital€and€Operating€Cost€Estimating€System€Handbook€for€Aluminum€SmelterÐ 0"€  ÐFacilities,€U.S.€Department€of€the€Interior,€Bureau€of€Mines,€August€1985.€196€pp.Ð ` (#` (# ÐÌÌà0  àà0` (#(#àà0¸ ` (#` (#àÐ ¸ (#¸ (# ÐÌÌÌÌÌÌà@µµ!ìàDocket€No.€A„92„60ˆÐ T,¤'+ Ðà@DDìàPrimary€Aluminum€NESHAPˆÌà@++%ìàCategory€IIˆÌà@h h ìàItems€Considered€in€Developing€ProposalˆÌà@ff"ìàSubcategory€II„IˆÌà@ÇÇ!ìàReference€MaterialsˆÌòòÌDocument€No.óóà ¸ àà  àà h àà À àà  àòòDescriptionóóÐ 8 ˆ ÐÌÌII„I„8à0  àà0` (#(#àAn€Overview€of€the€Guidelines€Section€I:€€Potential€Environmental€Impacts€byÐ ü L  ÐFluorides€and€Other€Major€Pollutants,€Y.€Lallement,€Aluminum€Pechiney,€In:€ÏUnited€Nations€Environment€Programme/€International€Primary€AluminumÏInstitute€Multi„Regional€Training€Workshop€on€Environmental€Management€ofÏAluminum€Smelters€in€Cooperation€with€The€Dubai€Aluminum€Company€LimitedÏ(Dubal),€Dubal€City,€United€Arab€Emirates,€December€8„9,€1986,€pp.€68„88.Ð ` (#` (# ÐÌII„I„9à0  àà0` (#(#àExternal€Problems€and€Measures€for€their€Control:€€Fluorides,€Coal€Tar€PitchÐ pÀ 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