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$›¬§~~›¬----$§‘œ¬š¬}Ø}Ø~§----$š¬¦~Ø~šƚ¬š¬----$Dė8ė8éDéDė----$1ė%ė%é1é1ė----$ėėééė----$ ė’ė’é é ė----$ųėģėģéųéųė----$åėŁėŁéåéåė----$ŅėĘėĘéŅéŅė----$æė³ė³éæéæė----$¬ė ė é¬é¬ė----$™ėėé™é™ė----$†ėzėzé†é†ė----$sėgėgésésė----$`ėTėTé`é`ė----$MėAėAéMéMė----$:ė.ė.é:é:ė----$'ėėé'é'ė----$ėėééė----$ėõėõééė----$īėāėāéīéīė----$ŪėĻėĻéŪéŪė----$Čė¼ė¼éČéČė----$µė©ė©éµéµė----$¢ė˜ė˜é¢é¢ė----$«®«Ŗ­Ŗ­®«®---- $¬×·Ŗ Ŗ¬×----$·«”«­׫ן©ø©øŖ·«----$«×¶ŖøŖ¬Ś«׫×--šū"Arial¾ (!‚ķw*‚ķwĄgļw¾ ( -- .  -- 2 b0D/2  bK-- .  -- 2 bŠD/3  b„-- .  --2 b4 x D  b:-- .  --2 Dį GREATER THAN  Dj-- .  --2 2kRANGE OF  2Ę-- .  --2 Q] ACCEPTABLE QŠ-- .  --2 qc LOCATIONSE  qČ---$i?i‘g‘g?i?----$š#šœœ#š#--š-ü[[[- $›ķ§›ķ----$¦šķœķ؏----$œķ‘šéœķœķ----$B#B0@0@#B#---- $A60L0A----$6/K/@BM151506/----$B7050@žBB----$@@×B×B@----$­­««­---- $¬ź”ø¬ź----$”·«ź­ź¹  ”----$­ź¢ «ę­ź­ź--ū쒐"ArialÜ 2!‚ķw*‚ķwĄgļwÜ 2 -- .  --{2 ē9MFigure 1-4. Transmissometer location greater than four diameters downstream’                         ē-- .  --Q2 ó1of a vertical bend in a horizontal stack or duct.              ‘---$­››­­--š-ü[[[- $n››n----$ššnn œœ›š----$n ››jnn----$NooNN---- $oo----$p pn n op----$o o --š&’’0 d d.Courier New RegularŻ ƒ!ŻŻ  ŻŌ_ŌŌ€ X  XXXŌŌ‡X§ XX X  ŌŃ„°ŃҰŅÓÓŃ  ŃŃ8€  XXdŌdČ8ŃŃ  ŃŃ„ČŃŌ_Ōņņóóą€ŲŲB(#ą6560„50„PˆŠ ° Šą@v v ąENVIRONMENTAL€PROTECTION€AGENCYˆĢą@¤¤&ą40€CFR€Part€60ˆĢą@žž%ą[AD„FRL„€6846„6€]ˆĢŌ_ŌRINŌ_Ō€2060„AG22Ģą@ō ō ąAmendments€to€Standards€of€Performance€forˆĢą@ ąNew€Stationary€Sources;€Monitoring€RequirementsˆĢĢAGENCY:ą ø ąEnvironmental€Protection€Agency€(EPA).Š pĄ ŠACTION:ą ø ąFinal€rule.Š H˜ ŠSUMMARY:€€The€EPA€is€issuing€revisions€to€the€monitoring€requirements€toĻPerformance€Specification€1€(PS-1)€of€appendix€B€to€part€60.€€The€revisions€clarify€andĻupdate€requirements€for€source€owners€and€operators€who€must€install€and€use€continuousĻstack€or€duct€opacity€monitoring€equipment.€€The€revisions€also€update€design€andĻperformance€validation€requirements€for€continuous€opacity€monitoring€system€(COMS)Ļequipment€in€appendix€B,€PS-1.€€These€revisions€do€not€change€an€affected€facilityššsĻapplicable€emission€standards€or€requirements€to€monitor€opacity.€€However,€the€revisionsĻdo€the€following:€Ó °Ō °œXÓclarify€the€obligations€of€owners,€operators,€and€opacity€monitorĻvendors;€reaffirm€and€update€COMS€design€and€performance€requirements€byĻincorporating€by€reference€American€Society€for€Testing€and€Materials€(ASTM)€D€6216„¼98€(approved€February€10,€1998);€provide€EPA€and€affected€facilities€with€equipmentĻassurances€for€carrying€out€effective€monitoring.ĢDATES:€This€rule€is€effective€[INSERT€DATE€180€DAYS€AFTER€DATE€OFĻPUBLICATION€IN€THE€FEDERAL€REGISTER].€€The€incorporation€by€reference€ofŠ /h*. Šcertain€publications€listed€in€the€regulations€is€approved€by€the€Director€of€the€ņņFederalŠ ° ŠRegisteróó€as€of€[INSERT€DATE€180€DAYS€AFTER€DATE€OF€PUBLICATION€IN€THEŠ ˆŲ ŠFEDERAL€REGISTER].ĢADDRESSES:€€Air€Docket€Section€(MC„6102),€Attention:€€Docket€No.A„91„07,€U.S.ĻEnvironmental€Protection€Agency,€Room€M-1500,€First€Floor,€Waterside€Mall,€401€MĻStreet,€S.W.,€Washington,€D.C.€20460.ĢMr.€Solomon€Ricks,€Source€Characterization€Group€A,€Emissions,€Monitoring,€andĻAnalysis€€Division€(MD„19),€U.S.Environmental€Protection€Agency,€Research€TriangleĻPark,€North€Carolina€27711.€ĢFOR€FURTHER€INFORMATION€CONTACT:€€ĢÓ! °Ō’’°ŌĢ!Óą ` ąMr.€Solomon€Ricks,€(919)€541„5242.Ģą ` ąAir€Docket,€(202)€260„7548.ĢSUPPLEMENTARY€INFORMATION:Ģą ` ąDocket,€No.€A„91„07,€containing€information€relevant€to€this€rulemaking,€isĻavailable€for€public€inspection€between€8:00€a.m.€and€noon€and€1:30€p.m.€and€4:00p.m.,ĻMonday€through€Friday,€except€for€Federal€holidays,€at€EPA's€Air€Docket€Section.€€AĻreasonable€fee€may€be€charged€for€copying.Ģą ` ąOverview.€€The€preamble€summarizes€the€legal€authority€for€these€revisions,Ļbackground€information,€technical€and€economic€methodology€used€by€the€Agency€toĻdevelop€these€revisions,€impacts€of€these€revisions,€regulatory€implementation,€responsesĻto€public€comments,€and€the€availability€of€supporting€documents.Ģą ` ąRegulated€Entities.€€These€revisions€apply€to€certain€facilities,€and€they€may€applyĻto€others.Š @-(, ŠŌ_ Ōą ` ą(a)€€The€revisions€apply€to€any€facility€that€is:ĢÓ$°ųX’’°Ō4$Óą ` ą(1)€€Required€to€install€a€new€COMS,€relocate€an€existing€COMS,€replace€anĻexisting€COMS.Ģą ` ą(2)€€Required€to€recertify€an€existing€COMS€that€has€undergone€substantialĻrefurbishing€(in€the€opinion€of€the€enforcing€agency).€Ģą ` ą(3)€€Specifically€required€to€recertify€the€COMS,€as€required€in€the€Code€ofĻFederal€Regulations€(CFR).€€Ģą ` ą(b)€€These€requirements€may€also€apply€to€stationary€sources€located€in€a€State,ĻDistrict,€Reserva‚tion,€or€Territory€that€has€adopted€these€revisions€into€its€implementationĻplan.€Ģą ` ąBackground€Documentation.€€The€following€is€a€list€of€background€documentsĻpertaining€to€this€rulemaking:Ģą ` ą(1)€€Summary€of€Comments€and€Responses€to€the€Proposed€Revisions€to€PS-1.€ĻJuly€1998.€€Docket€item€No.€IV„A„01.Ģą ` ą(2)€€Summary€of€Performance€Specification€1€(PS-1)€Stakeholder€Meeting.€€JuneĻ1996.€€Docket€item€No.€IV„E„01.Ģą ` ą(3)€€Summary€of€Comments€and€Responses€to€the€PS-1€Supplemental€Proposal.€ĻApril€1999.€€Docket€item€No.€IV„A„02.Ģą ` ą(4)€€The€EPA€Public€Comment€Meeting:€€Measurement€Methods€for€Opacity€StackĻMonitoring.€€October€1998.€€Docket€item€No.IV-E-02.ĢŌ_ Ōą ` ąThe€two€Summary€of€Comments€and€Responses€documents€(items€1€and€3)€for€thisĻfinal€rule€contain€a€summary€of€all€public€comments€made€on€the€rule€and€our€response€toĻthe€comments.€€The€Summary€of€Performance€Specification€1€(PS-1)€Stakeholder€MeetingŠ @-(, Š(item€2)€contains€a€brief€summary€of€the€meeting€taken€from€a€poor€quality€audioĻrecording€of€the€meeting.€€The€EPA€Public€Comment€Meeting:€€Measurement€Methods€forĻOpacity€Stack€Monitoring€(item€4)€contains€a€transcript€of€the€public€hearing€on€theĻSupplemental€Proposal.Ģą ` ąTechnology€Transfer€Network.€€The€Technology€Transfer€Network€(TTN)€is€oneĻof€EPAššs€electronic€bulletin€boards.€€The€TTN€provides€information€and€technologyĻexchange€in€various€areas€of€air€pollution€control.€€New€air€regulations€are€posted€on€theĻTTN€through€the€world€wide€web€at€š šhttp://www.epa.gov/ttnšš.ĢĢThe€information€presented€in€this€preamble€is€organized€as€follows:ĢÓ'°SųX’’°ųX'ÓI.ą « ąBackgroundŠ  p ŠII.ą0 « ąRegulatory€History€of€This€RulemakingŠųH« (#« (# ŠÓ*« m Ø ŒX’’°SųX*ÓIII.ą « ąMajor€Public€Comments€and€EPA€Responses€and€Changes€to€the€ProposedŠ Š  ŠRevisionsĢą « ąA.ą0 m ąComments€and€Responses€on€the€Proposed€PS-1Š€Šm (#m (# Šą « ąB.ą0 m ąComments€and€Responses€on€the€Supplemental€ProposalŠX Øm (#m (# Šą « ąC.ą0 m ąApplicabilityŠ0"€ m (#m (# Šą « ąD.ą0 m ąDefinitionsŠ$X"m (#m (# Šą « ąE.ą0 m ąChanges€in€Design€SpecificationsŠą%0!$m (#m (# Šą « ąF.ą0 m ąOther€Ō_ ŌRevisionsŠø'#&m (#m (# ŠŌ  ŌIV.ą « ąAdministrative€RequirementsŠ )ą$( Šą « ąA.ą0 m ąDocketŠh+ø&*m (#m (# Šą « ąB.ą0 m ąExecutive€Order€12866Š@-(,m (#m (# Šą « ąC.ą0 m ąExecutive€Order€13132€Š°m (#m (# Šą « ąD.ą0 m ąPaperwork€Reduction€ActŠˆŲm (#m (# Šą « ąE.ą0 m ąRegulatory€FlexibilityŠ`°m (#m (# Šą « ąF.ą0 m ąUnfunded€Mandates€ActŠ8 ˆm (#m (# Šą « ąG.ą0 m ąNational€Technology€Transfer€and€Advancement€ActŠ `m (#m (# Šą « ąH.ą0 m ąExecutive€Order€13045Šč 8 m (#m (# ŠŻ ‚%é; ŻŻ  ŻŻ‚%é;|Żą0 « ąŌ2#ŌŚ  ŚaŚ  Ś.Ō3  Ōą0m « (#« (#ąŻ  ŻCongressional€Review€ActŻƒ%é;|§݌ŠĄ m (#m (# ŠŒŻ  ŻŲ ŲÓL€ Zł(3LÓŻ ‚3£ ŻŻ  Żą « ąŻ‚3£ŚŻŌ2ZłŌŚ  ŚJŚ  Ś.Ō3  Ōą0 m ąŻ  ŻExecutive€Order€13084Żƒ3£Ś݌Š˜č m (#m (# ŠŒŻ  ŻĢÓ$ °§X« m Ø ŒX$ÓI.€€BACKGROUNDĢĢą ` ąWe€published€the€Specifications€and€Test€Procedures€for€Opacity€ContinuousĻEmission€Monitoring€Systems€in€Stationary€Sources,€PS-1,€(40€CFR€Part€60€Appendix€B)Ļin€the€ņņFederal€Ō_ ŌRegisterŌ_ Ōóó€on€October€6,€1975€(40€FR€64250).€€We€published€an€amendmentŠ Øų Što€PS-1€on€March€30,€1983€(48€FR€13322).€€Since€the€1983€amendment,€we€gained€moreĻexperience€and€understanding€of€COMS€performance€and€operation.€€Also,€manufacturersĻcontinued€to€improve€the€design€of€opacity€monitors.€€In€1989€and€1990,€we€conductedĻopacity€monitor€manufacturer€evaluations€and€found€varying€levels€of€sophistication€inĻhow€manufacturers€tested€the€performance€of€their€monitors.€€For€example,€the€detectionĻlimits€of€some€testing€equipment€used€by€the€manufacturers,€were€found€to€be€limitingĻŌ_ Ōfactors€in€evaluating€COMS.€€In€other€cases,€the€evaluation€showed€that€the€COMSĻmanufacturers€had€identified€incorrect€calculation€procedures€as€well€as€inclusion€of€aĻcomponent€that€caused€an€unacceptable€COMS€response.€€Other€evaluations€done€in€Ō_ Ō1992Š @-(, Šidentified€a€continuing€problem€of€clearly€depicting€misalignment€of€the€transceiver€andĻretroreflector.€€In€1992,€we€observed€COMS€responses€over€different€distances€for€theĻCOMS€alignment€test€and€concluded€that€the€alignment€check€needed€to€be€done€at€theĻinstallation€pathlength.€€Moreover,€from€1989€to€1992,€we€observed€the€angle€of€viewĻ(AOV)€and€angle€of€projection€(AOP)€testing,€conducted€by€10€major€manufacturers€ofĻCOMS,€and€concluded€that€the€AOV€and€AOP€should€be€reduced€from€the€current€5Ļdegrees€to€4€degrees.€€This€change€reflects€manufacturers'€improvement€in€the€monitorsššĻcapabilities.€€Lastly,€the€primary€concern€of€COMS€data€users€was€the€capability€of€theĻmonitor€to€measure€opacity€accurately€at€or€near€the€applicable€standard.€€Once€theĻopacity€level€exceeds€the€standard,€the€magnitude€of€the€emissions€is€of€lesser€concernĻthan€the€duration€of€the€Ō_ ŌexceedanceŌ_ Ō.€€Therefore,€the€levels€at€which€the€opacity€monitor€isĻevaluated€needed€to€be€revised.€€Based€on€the€findings€of€our€evaluations,€we€decided€toĻupdate€PS-1€to€meet€current€industry€practices€and€to€ensure€a€continued€improvement€inĻthe€quality€of€opacity€data.ĢĢŌ  ŌII.€€REGULATORY€HISTORY€OF€THIS€RULEMAKINGĢĢą ` ąWe€proposed€revisions€to€PS-1€in€the€ņņFederal€Registeróó€(59€FR€60585)€onŠ $X" ŠNovember€25,€1994.€€Public€comments€were€accepted€for€60€days,€until€January€24,€1995.€ĻWe€received€a€total€of€89€individual€comments€from€14€separate€commenters.€€CommentsĻon€the€November€1994€proposal€revealed€some€concern€and€confusion€with€the€designĻspecifications€and€with€the€test€procedures€to€verify€compliance€with€the€designĻspecifications.€€A€summary€of€the€public€comments€and€EPAššs€response€to€thoseŠ @-(, ŠŌ_ Ōcomments€is€in€the€docket€(IV„A„01).€€To€ensure€adequate€understanding€of€the€technicalĻissues€uncovered€in€the€comments,€we€held€a€public€stakeholder€meeting€on€June€12,Ļ1996.€€Attendees€included€opacity€monitor€manufacturers,€State€and€local€agencies,€EPAĻregional€offices,€and€COMS€owners€and€operators.€€A€few€of€the€monitor€manufacturersĻwere€also€members€of€ASTM.€€A€summary€of€the€stakeholder€meeting€is€in€the€docketĻ(IV„E„01).€€As€an€outcome€of€the€stakeholder€meeting,€in€September€1996,€ASTMĻD22.03,€a€Subcommittee€on€Ambient€Atmospheres€and€Source€Emissions,€volunteered€toĻundertake€development€of€a€Standard€Practice€for€opacity€monitor€manufacturers.€€TheĻStandard€Practice€that€they€developed€(1)€offered€additional€design€and€performanceĻspecifications€and€test€procedures€to€eliminate€many€of€the€performance€problems€thatĻEPA€encountered€with€existing€COMS€and€(2)€contributed€to€ensuring€the€quality€ofĻopacity€monitoring€results€without€restricting€future€technological€development.€€Ģą ` ąOn€September€23,€1998,€we€published€a€supplemental€proposal€in€the€ņņFederalŠ Š  ŠRegisteróó€(63€FR€50824)€to€incorporate€ASTM€D€6216„98€by€reference€into€the€proposedŠ Øų Šrevisions€to€PS-1.€€Public€comments€were€accepted€for€60€days.€€A€total€of€12€commentersĻresponded€to€the€supplemental€proposal.€€A€summary€of€the€public€comments€and€EPAššsĻresponse€to€those€comments€is€in€the€docket€(IV„A„02).€€On€October€23,€1998,€byĻrequest,€we€held€a€public€hearing€on€the€supplemental€proposal.€€A€summary€of€the€publicĻhearing€is€in€the€docket€(IV„E„02).ĢĢIII.ą0 ` ąMAJOR€PUBLIC€COMMENTS€AND€EPA€RESPONSES€AND€CHANGES€TOŠ )ą$( ŠTHE€PROPOSED€REVISIONSŠ ` (#` (# ŠŠ @-(, ŠA.€€Comments€and€Responses€on€the€Proposed€PS-1ĢĢą ` ąWe€received€a€total€of€89€individual€comments€from€14separate€commenters€onĻthe€November€24,€1994,€proposed€revisions.€€The€significant€comments€on€the€1994Ļproposal€came€from€manufacturers€and€focused€primarily€on€the€design€specification€andĻthe€verification€test€procedures.€€Specifically,€one€manufacturer€stated€PS-1€should€includeĻspecifications€for:€€(1)€limiting€the€analyzerššs€sensitivity€to€ambient€light,€(2)€limiting€theĻanalyzerššs€sensitivity€to€AC€line€voltage€variations,€(3)€limiting€the€analyzerššs€potentialĻopacity€error€over€the€entire€range€of€expected€operating€temperatures,€and€(4)€describingĻthe€analyzerššs€ability€to€meet€some€normal€shock€and€vibration€criteria.€€AnotherĻmanufacturer€stated€a€specification€and€verification€test€should€be€added€to€determine€theĻhomogeneity€of€the€light€beam.€€Several€manufacturers€suggested€terminology€was€neededĻin€PS-1€to€distinguish€between€zero€drift€and€dust€accumulation€on€exposed€opticalĻsurfaces.€€Another€manufacturer€described€in€detail€the€shortcomings€of€the€angle€of€viewĻand€angle€of€projection€verification€procedures.€€Specifically,€the€manufacturer€stated€thatĻthe€equipment€being€tested€should€incorporate€whatever€field€restricting€devices€that€willĻbe€installed€with€the€transmissometer.€€He€felt€since€most€light€sources€are€chopped€toĻdifferentiate€between€ambient€light€and€measurement€light,€it€needs€to€be€specified€that€theĻnondirectional€light€source€may€be€chopped€if€required€to€be€compatible€with€the€lightĻdetection€scheme.€€Also,€since€some€chopping€rates€are€so€high€as€to€only€be€feasible€withĻlight€emitting€diodes,€it€should€be€allowable€to€use€the€actual€source,€if€necessary.€€If€theĻactual€source€is€used€without€projection€optics,€and€it€does€not€provide€sufficient€light€at€3Ļmeters€to€be€detectable,€a€shorter€distance€should€be€allowed€or€use€the€normal€projectionŠ @-(, Šoptics,€if€required.€€Each€of€these€issues€is€already€addressed€by€the€ASTM€D€6216„98ĻStandard€Practice.€€Therefore€we€adopted€ASTMššs€Standard€Practice€by€reference€intoĻPS-1.€€Ģą ` ąSeveral€commenters€requested€that€existing€COMS€that€are€moved€or€refurbishedĻshould€not€have€to€meet€the€requirements€of€this€new€PS-1.€€They€argued€that€existingĻCOMS€would€be€required€to€have€new€span€filters€(in€the€PS„1€revisions,€the€term€š šspanššĻis€no€longer€used;€it€has€been€replaced€with€upscale€calibration€value)€installed€andĻcertified€if€relocated€or€refurbished.€€This€issue€was€also€raised€in€the€comments€on€theĻsupplemental€proposal.€€The€relocation€of€a€COMS€is€likely€to€have€an€impact€on€theĻpathlength€correction€factor,€which€will€impact€the€upscale€calibration€value.€€A€change€inĻthe€upscale€calibration€value€could€necessitate€a€change€in€the€upscale€calibration€filter.€ĻThe€revisions€to€PS„1€ensure€continued€improvement€in€the€quality€of€opacity€data€beingĻcollected,€primarily€due€to€the€clarification€of€the€design€specification€verificationĻprocedures€and€the€performance€specifications.€€The€procedures€are€written€in€a€manner€toĻeliminate€diverse€interpretations.€€Therefore,€we€are€requiring€relocated€or€refurbishedĻCOMS€to€meet€the€new€PS-1.€€Ģą ` ąMany€commenters€suggested€that€the€20percent€dirty€window€compensationĻshould€not€be€allowed€for€any€COMS.€€The€commenters€believed€opacity€monitorĻmanufacturers€are€capable€of€utilizing€improved€purge€systems€to€prevent€dirt€buildup.€ĻAlso,€it€was€suggested€that€errors€of€deliberate€misadjustment€or€neglect€of€maintenance€ofĻmonitors€could€result.€€We€agreed€with€the€suggestion€that€deliberate€misadjustment€couldĻoccur,€as€well€as€neglect€of€maintenance€of€monitors,€and€the€dirty€window€compensationĻis€now€4percent.Š @-(, Šą ` ąSeveral€manufacturers€commented€that€the€calibration€error€test,€instrumentĻresponse€time€test,€and€optical€alignment€sight€test€should€also€be€done€by€theĻmanufacturer€and€not€solely€at€the€source€by€the€owner€or€operator.€€Because€theĻmanufacturers€have€the€special€equipment€to€do€these€tests,€we€agreed€that€the€calibrationĻerror,€instrument€response€time,€and€optical€alignment€sight€tests€should€be€done€by€theĻmanufacturer.€€In€the€supplemental€proposal,€we€only€required€the€manufacturers€toĻperform€the€aforementioned€tests.€€We€received€comments€on€the€supplemental€proposalĻfrom€state€regulatory€agencies€stating€that€facilities€should€continue€to€also€be€responsibleĻfor€conducting€these€tests.€€One€commenter€argued€that€the€burden€on€facilities€would€beĻminimal,€because€manufacturerššs€representatives€typically€are€directly€involved€with€initialĻonsite€installation€and€testing.€€The€final€rule€requires€both€the€manufacturers€and€facilitiesĻto€perform€the€calibration€error,€instrument€response€time,€and€optical€alignment€sightĻtests.€€The€final€rule€also€requires€the€manufacturer€to€conduct€performance€verificationĻtests€on€each€monitor€at€installation„specific€conditions€or€at€clearly€defined€defaultĻconditions€if€installation€conditions€are€not€known.ĢĢŲ ŲB.€€Comments€and€Responses€on€the€Supplemental€ProposalĢĢą ` ąA€total€of€12€commenters€submitted€written€comments€about€the€September€23,Ļ1998€supplemental€proposal.€€Three€people€that€spoke€at€the€public€hearing€did€not€submitĻwritten€comments.€€The€most€frequent€comment€concerned€the€manner€in€which€weĻincorporated€ASTM€D€6216„98€by€reference€into€PS-1.€€Representatives€from€ASTMĻbelieved€incorporating€D€6216„98€by€citing€the€various€paragraphs€disrupted€the€flow€ofŠ @-(, Šthe€Standard€Practice.€€They€felt€it€would€be€more€advantageous€if€we€incorporated€theĻStandard€Practice€in€its€entirety.€€We€agreed€with€this€assessment;€therefore,€in€this€finalĻrule,€we€have€incorporated€D€6216„98€in€its€entirety.€Ģą ` ąBoth€manufacturers€and€State€agency€representatives€commented€about€the€lack€ofĻfield€audit€procedures€to€confirm€the€performance€of€the€COMS€after€it€was€installed.€ĻThey€suggested€we€include€the€procedures€that€were€in€the€1994€PS„1€proposal€(59€FRĻ60585)€for€the€calibration€error€test,€instrument€response€time€test,€and€optical€alignmentĻsight€test.€€Also,€other€commenters€suggested€that€the€field€audit€procedures€shouldĻinclude€a€check€of€the€entire€monitoring€system€to€verify€that€the€combined€opacityĻmonitor€and€data€recording€system€correctly€average€and€record€averaging€period€values.€ĻWe€agreed€that€field€audit€procedures€were€necessary€at€the€source,€therefore€we€included€Ļfield€performance€audit€procedures€and€made€them€consistent€with€ASTM€D€6216€inĻterms€of€both€terminology€and€technology.Ģą ` ąMany€commenters€expressed€concern€with€the€amount€of€time€allowed€for€opacityĻmonitor€manufacturers€to€comply€with€the€new€specifications.€€They€felt€30€days€was€notĻenough€time.€€Several€manufacturers€suggested€they€could€be€in€compliance€withinĻ180days.€€We€agreed€with€the€suggested€time€for€compliance€and€moved€the€effectiveĻdate€from€30€days€to€180€days€after€publication€in€the€ņņFederal€Registeróó.Š $X" Šą ` ąSome€commenters€questioned€our€replacing€the€old€168„hour€Conditioning€PeriodĻand€168„hour€Operational€Test€Period€with€an€extended€336-hour€Operational€TestĻPeriod.€€Commenters€suggested€making€the€Operational€Test€Period,€during€which€theĻzero€and€upscale€drift€tests€are€conducted,€consistent€with€the€7„day€drift€test€period€for€aĻgaseous€monitoring€system.€€Also,€a€few€commenters€asked€that€normal€source€downtimeŠ @-(, Šbe€included€in€the€Operational€Test€Period.€€Recognizing€that€source€owners€and€operatorsĻwould€run€informal€conditioning€period€prior€to€beginning€the€operational€test€period,€weĻeliminated€the€168„hour€Conditioning€Period€and€reduced€the€Operational€Test€PeriodĻfrom€336€hours€to€168€hours.€€We€also€clarified€the€language€in€the€final€rule€and€includedĻminimum€source€operating€times€required€during€the€Operational€Test€Period€for€batchĻoperations€and€continuous€operating€processes.ĢÓL€ Uh(( LÓą ` ąOther€commenters€questioned€our€retaining€the€calibration€stability€test€in€PS-1Ļwhen€tests€were€included€in€the€ASTM€Standard€Practice€to€detect€opacity€monitors€thatĻhave€short„term€drift€problems.€€They€believed€including€the€test€in€PS„1€was€redundantĻand€unnecessary.€€We€agreed€with€the€suggestion€that€the€test€was€redundant,€and€deletedĻthe€calibration€stability€test€from€the€final€rule.Ģą ` ąOne€commenter€stated€that,€as€proposed,€the€requirements€relating€to€daily€zeroĻand€upscale€calibration€check€levels€would€impose€manufacturing€problems€which€wouldĻsignificantly€increase€the€cost€to€manufacture€opacity€monitors.€€This€comment€was€givenĻdue€to€the€manner€in€which€ASTM€D€6216„98€was€incorporated€in€the€supplementalĻproposal.€€The€commenter€stated€that€incorporating€only€certain€sections€of€the€standardĻcreated€unnecessary€confusion€regarding€the€applicable€requirements,€allowed€for€mis„¼application€of€the€ASTM€standard,€and€created€unnecessary€complexity€and€significantlyĻincreased€costs€for€regulatory€agencies,€instrument€manufacturers,€and€the€regulatedĻfacilities.€€Specifically,€it€was€stated€that€to€meet€the€values€in€the€supplemental€proposalĻgiven€for€the€zero€and€upscale€calibration,€a€manufacturer€would€have€to€maintain€900Ļcalibration€filters.€€Although€we€did€not€agree€with€this€interpretation€of€the€rule,€afterĻreviewing€the€comments€submitted€on€the€supplemental€proposal,€we€agreed€thatŠ @-(, Šmisunderstandings€could€occur€with€the€rule€as€proposed.€€With€the€incorporation€of€theĻASTM€standard€in€its€entirety,€we€have€eliminated€any€confusion€which€may€occur,€andĻwe€have€eliminated€any€unnecessary€complexity€in€the€rule.€€The€final€rule€will€notĻsignificantly€increase€the€cost€for€regulatory€agencies,€instrument€manufacturers,€or€theĻregulated€facilities.ĢĢÓL€ н (LÓC.€€ApplicabilityĢĢą ` ąThe€ASTM€D22.03€Task€Group€chairperson€indicated€in€his€comments€on€theĻsupplemental€proposal€that€the€calibration€error€specification€of€šš3percent€opacity,€theĻzero€and€upscale€drift€specifications€of€šš2percent€opacity,€and€the€PS„1€requirements€toĻadjust€monitors€when€drift€exceeds€two€times€the€specification€(i.e.,€šš4percent€opacity)Ļare€inappropriate€for€monitoring€an€opacity€standard€below€10percent.€€Special€calibrationĻattenuators€and€calibration€techniques,€not€yet€available€on€a€broad€basis,€are€needed€forĻcases€where€the€opacity€standard€is€below€10€percent.€€He€noted€that€imprecisionĻallowances€of€this€magnitude€create€excessive€uncertainty€for€establishing€compliance€withĻa€low€opacity€limit.€€The€ASTM€representative€noted€that€ASTM€D€6216„98€specificationsĻensure€accurate€COMS€measurements€at€sources€with€opacity€standards€of€10€percentĻopacity€or€greater.Ģą ` ąThe€ASTM€representative€also€indicated€that€the€design€specification€for€full€scaleĻto€be€set€at€80percent€opacity€or€above€is€inappropriate€for€sources€where€the€complianceĻlevel€is€below€10percent€opacity.€€The€commenter€also€indicated€other€technical€issuesĻrelated€to€continuous€monitoring€of€opacity€from€sources€subject€to€opacity€standards€lessŠ @-(, Šthan€10percent€which€PS„1€does€not€adequately€address.€€Therefore,€the€ASTM€opacityĻTask€Group€elected€to€defer€consideration€of€these€special€issues€in€ASTM€D€6216„98€andĻinstead€specified€that€ASTM€D€6216„98€will€ensure€that€COMS€š šmeet€minimum€designĻand€calibration€requirements,€necessary€in€part,€for€accurate€opacity€monitoringĻmeasurements€in€regulatory€environmental€monitoring€applications€subject€to€10€percentĻor€higher€opacity€standards.ššĢą ` ąWe€recognize€there€are€potential€measurement€errors€associated€with€monitoringĻopacity€in€stacks€especially€for€emission€units€subject€to€opacity€limits€less€than€10€percent.€ĻThe€uncertainties€in€measurement€accuracy€result€from€several€factors.€€One€is€the€currentĻunavailability€of€calibration€attenuators€for€opacity€levels€below€6€percent€(3€percent€forĻsingle„pass€instruments).€€There€are€experimental€techniques€under€review€that€wouldĻallow€preparation€and€validation€of€calibration€attenuators€at€levels€down€to€1€or€2Ļpercent;€however,€the€process€for€manufacturing€and€validating€such€devices€is€not€yet€inĻplace.€€We€intend€to€work€with€the€ASTM€Task€Group€to€further€this€development€work.Ģą ` ąA€second€source€of€potential€measurement€error€is€that€associated€with€theĻcalibration€error€allowances,€the€zero€and€upscale€drift€specifications,€the€mandatory€driftĻadjustment€levels,€and€the€imprecision€associated€with€the€allowed€compensation€for€dirtĻaccumulation.€€The€imprecision€associated€with€these€tolerances€may€be€adequate€forĻassuring€the€quality€of€higher€opacity€measurements,€but€may€be€inadequate€for€assuringĻthe€quality€of€measurements€of€opacity€less€than€10€percent.€€In€cooperation€with€theĻASTM€Task€Group,€we€will€continue€to€evaluate€the€capabilities€of€COMS€relative€toĻthese€performance€specifications.€€The€purpose€of€these€evaluations€is€to€determineĻwhether€tighter€specifications€are€achievable€and€whether€such€tighter€specifications€wouldŠ @-(, Šassure€data€of€sufficient€quality€at€opacity€levels€less€than€10€percent.€€Possible€outcomesĻinclude€another€revision€to€PS„1€addressing€the€on„site€performance€requirements€or€aĻsecond€performance€specification€directed€at€COMS€used€at€facilities€with€opacity€limitsĻless€than€10€percent.Ģą ` ąA€third€factor€is€the€minimum€full€scale€range€of€80€percent€opacity€required€ofĻCOMS€in€PS„1.€€This€range€is€necessary€in€many€cases€to€ensure€that€short€term€(i.e.,€lessĻthan€6€minutes)€excursions€at€high€opacity€levels€are€captured€in€the€6„minute€average.€€OnĻthe€other€hand,€the€specified€full€scale€range€may€be€inappropriately€high€for€accurateĻmeasurements€of€opacity€less€than€10€percent€for€some€instruments.€€We,€again€inĻcooperation€with€the€ASTM€Task€Group,€will€evaluate€a€number€of€options€to€address€thisĻconcern.€€Among€potential€options€is€the€reduction€of€the€required€measurement€range€forĻlow€opacity€applications;€another€is€a€requirement€for€dual€range€output€with€separateĻcalibration€and€drift€allowances.€€The€revised€PS„1€includes€an€option€to€establish€a€site„¼specific€full€scale€range€of€no€less€than€50€percent€opacity€at€facilities€with€opacity€limitsĻless€than€10€percent.Ģą ` ąWe€can€estimate€the€upper€range€of€potential€measurement€error€that€may€beĻassociated€with€COMS€data€by€using€a€propagation€of€errors€statistical€analysis€of€theĻcalibration€error,€zero€and€upscale€drift,€and€alignment€tolerances€as€specified€in€PS„1.€ĻThis€very€conservative€approach€produces€a€potential€measurement€error€of€about€Ō_ Ō4Ļpercent€opacity.€€A€properly€operating€and€aligned€COMS€should€experience€measurementĻerror€significantly€less€than€this€magnitude.Ģą ` ąWhile€we€recognize€the€potential€for€measurement€error€associated€withĻmonitoring€opacity€where€the€opacity€limit€is€less€than€10€percent,€we€believe€it€isŠ @-(, Šinappropriate€to€limit€the€applicability€of€PS„1€based€on€the€applicable€emission€limit.€€TheĻfinal€PS„1€is€applicable€to€all€COMS€required€to€be€certified€or€recertified.€€Instead€ofĻlimiting€the€applicability,€the€final€PS„1€will€take€into€account€(through€statisticalĻprocedures€or€otherwise)€the€measurement€uncertainty€associated€with€COMSĻmeasurements€below€10€percent€opacity.€€Regardless€of€the€potential€for€error€in€low€levelĻCOMS€readings,€you,€the€owner€or€operator,€are€expected€to€respond€to€and€correct€asĻsoon€as€possible€any€indication€of€excess€emissions€for€an€opacity€limit€consistent€withĻgood€air€pollution€control€practices€for€minimizing€emissions€as€required€by€Part€60€andĻother€regulations.ĢĢŌ#† XMXXX×}J#ŌŌ‡X×}XX XMŌD.€€DefinitionsŠ  p ŠĢą ` ąAll€of€the€definitions€from€ASTM€D€6216„98€are€incorporated€by€reference.€ĻComments€received€concerning€the€definitions€suggested€that€they€were€subject€to€aĻvariety€of€interpretations€as€written.€€As€a€result€of€incorporating€ASTM€D€6216„98€in€itsĻentirety€in€the€final€rule,€we€deleted€redundant€definitions€present€in€the€proposal€and€weĻdefined€terminology€exclusive€to€PS-1€to€be€consistent€with€ASTM€D€6216„98.ĢĢE.€€Changes€in€Design€SpecificationsĢŌ_ ŌĢą ` ąThere€were€specific€changes€in€the€design€specifications€detailed€in€the€1994Ļproposal€(59€FR€60585).€€These€changes€were€a€result€of€the€opacity€monitorĻmanufacturer€evaluations€conducted€in€1989€and€1990.€€Also,€the€specifications€forŠ @-(, Švoltage,€temperature,€and€light€fluctuations€were€introduced€in€the€supplemental€proposalĻ(63€FR€50824).€€There€were€no€comments€on€the€specifications,€only€on€the€verificationĻprocedures€for€the€specifications.€€The€design€specifications€changes€are€as€follows:Ģą ` ą(1)€€Angle€of€View€and€Angle€of€Projection.€€The€AOV€and€AOP€are€reduced€fromĻ5€degrees€to€4€degrees.€Ģą ` ą(2)€€Calibration€Drift€Checking€System.€€The€COMS€must€provide€a€means€toĻsimulate€a€zero€and€an€upscale€calibration€drift€check€value€in€order€to€check€the€COMSĻtransmitter/receiver€calibration€drift.€€The€calibration€drift€checking€system€must€include,Ļat€the€same€time,€all€active€analyzer€internal€optics€with€power€or€curvature,€all€activeĻelectronic€circuitry€including€the€light€source,€photodetector€assembly,€electronic€orĻelectro„mechanical€systems,€and€hardware€and/or€software€used€during€normalĻmeasurement€operation.€€The€upscale€calibration€check€response€may€not€be€altered€byĻelectronic€hardware€or€software€modification€during€the€calibration€cycle;€the€response€isĻrepresentative€of€the€gains€and€offsets€applied€to€normal€effluent€opacity€measurements.Ģą ` ą(3)€€Alarms€and€Warnings.€€The€COMS€must€provide€operators€visual€or€audibleĻalarms€or€fault€condition€warnings€to€facilitate€proper€operation€and€maintenance€of€theĻCOMS.€Ģą ` ą(4)€€Zero€Compensations.€The€COMS€must€provide€an€automated€means€to€assessĻand€record€accumulated€automatic€zero€compensations€on€a€24„hour€basis€in€order€toĻachieve€the€correct€response€to€the€simulated€zero€device.€Ģą ` ą(5)€€Compensation€for€Dirt€Accumulation.€€The€automatic€compensation€for€dirtĻaccumulation€on€the€exposed€optical€surfaces€of€the€COMS€must€now€include€theĻcompensation€allowance€in€the€4percent€opacity€tolerance€for€zero€drift€adjustment.€€OnlyŠ @-(, Šthose€optical€surfaces€directly€in€the€light€beam€path€under€normal€operation€to€measureĻopacity€may€be€measured€and€compensated€for€dust€accumulation.€€The€COMS€must€nowĻprovide€a€means€to€display€the€level€of€dust€compensation.€€ĢŲ Ųą ` ą(6)€€Opacity€Monitor€and€External€Audit€Filters.€€The€opacity€monitor€must€nowĻaccommodate€independent€audits€of€the€measurement€system€response€to€external€auditĻfilters.€€The€external€audit€filter€access€design€must€ensure€(a)€the€filters€are€used€inĻconjunction€with€a€zero€condition€based€on€the€same€energy€level,€or€within€5percent€ofĻthe€energy€reaching€the€detector€under€actual€clear€path€conditions,€(b)€the€entire€beamĻreceived€by€the€detector€will€pass€through€the€attenuator,€and€(c)€the€attenuator€is€insertedĻin€a€manner€that€minimizes€interference€from€reflected€light.Ģą ` ą(7)€€Opacity€Emissions€and€the€Pathlength€Correction€Factor.€€The€COMS€mustĻnow€automatically€correct€opacity€emissions€that€are€measured€at€the€COMS€installationĻlocation€to€the€emission€outlet€pathlength.€€The€COMS€must€be€designed€to€ensure€theĻpathlength€correction€factor€(PLCF)€cannot€be€changed€by€the€end€user,€or€the€PLCF€isĻrecorded€during€each€calibration€drift€check€cycle,€or€an€alarm€sounds€when€the€PLCFĻvalue€is€changed.Ģą ` ą(8)€€Voltage,€Temperature,€and€Light€Fluctuations.€€As€a€result€of€incorporatingĻASTM€D€6216„98€in€its€entirety,€we€incorporated€three€new€design€specifications€toĻensure€that€the€accuracy€of€opacity€monitor€data€is€not€affected€by€fluctuations€in€supplyĻvoltage,€ambient€temperature,€and€ambient€light€over€the€range€specified€by€theĻmanufacturer.€€ĢĢF.€€Other€RevisionsŠ @-(, Їą ` ąThis€final€rule€also€contains€some€revisions€to€40€CFR€part60€section€60.13(d)(1)Ļand€(d)(2)€and€several€revisions€or€corrections€to€PS-1.€€These€revisions€and€correctionsĻwere€given€in€detail€in€the€1994€proposal€(59€FR€60585)€and€the€supplemental€proposalĻ(63€FR€50824).€€There€were€no€comments€on€the€revisions€and€corrections,€which€areĻsummarized€below.€Ģą ` ąWe€revised€60.13(d)(1)€to€distinguish€between€gaseous€continuous€emissionsĻmonitoring€systems€(CEMS)€and€continuous€opacity€monitoring€systems€(COMS).Ģą ` ąWe€revised€60.13(d)(2)€to€clarify€and€update€which€parts€of€the€COMS€must€beĻchecked€by€the€daily€simulated€zero€and€upscale€calibration€drift€checks€and€to€beĻconsistent€with€ASTM€D€6216„98.Ģą ` ąBecause€the€new€design€specifications€now€require€that€the€opacity€monitor€exhibitĻno€interference€from€ambient€light,€we€modified€the€installation€guidelines.€€TheĻmodification€removes€the€limitation€of€locating€the€opacity€monitor€at€a€place€free€ofĻinterference€from€ambient€light.ĢĢIII.€€ADMINISTRATIVE€REQUIREMENTSĢĢņņA.€€Ō_ ŌDocketóóŠ $X" ŠĢą ` ąThe€docket€is€an€organized€and€complete€file€of€all€information€submitted€orĻotherwise€considered€by€EPA€in€the€development€of€this€rulemaking.€€The€principalĻpurposes€of€the€docket€are:€€(1)€to€allow€interested€parties€to€identify€and€locateĻdocuments€so€that€they€can€effectively€participate€in€the€rulemaking€process,€and€(2)€toŠ @-(, Šserve€as€the€record€in€case€of€judicial€review€(except€for€interagency€review€materials)Ļ[Clean€Air€Act€Section307(d)(7)(A)].ĢĢņņB.€€Executive€Order€12866€óóŠ 8 ˆ ŠĢą ` ąUnder€Executive€Order€12866€(58€FR€51735€October€4,€1993),€EPA€mustĻdetermine€whether€the€regulatory€action€is€š šsignificantšš€and€therefore€subject€to€Office€ofĻManagement€and€Budget€(OMB)€review€and€the€requirements€of€the€Executive€Order.€ĻThe€Order€defines€š šsignificant€regulatory€actionšš€as€one€that€is€likely€to€result€in€a€rule€thatĻmay:€€(1)€have€an€annual€effect€on€the€economy€of€$100€million€or€more€or€adverselyĻaffect€in€a€material€way€the€economy,€a€sector€of€the€economy,€productivity,€competition,Ļjobs,€the€environment,€public€health€or€safety,€or€State,€local,€or€Tribal€governments€orĻcommunities;€(2)€create€a€serious€inconsistency€or€otherwise€interfere€with€an€action€takenĻor€planned€by€another€agency;€(3)€materially€alter€the€budgetary€impact€of€entitlements,Ļgrants,€user€fees,€or€loan€programs,€or€the€rights€and€obligation€of€recipients€thereof;€orĻ(4)€raise€novel€legal€or€policy€issues€arising€out€of€legal€mandates,€the€PresidentššsĻpriorities,€or€the€principles€set€forth€in€the€Executive€Order.Ģą ` ąIt€has€been€determined€that€this€rule€is€not€a€š šsignificant€regulatory€actionšš€underĻthe€terms€of€Executive€Order€12866€and€is,€therefore,€not€subject€to€OMB€review.Ō#† XMXXX×}Óo#ŌŌ‡X×}XX XMŌŠ ą%0!$ ŠĢņņC.€€Executive€Order€13132óóŠ )ą$( Šā āŠ h+ø&* Šą ` ąExecutive€Order€13132,€entitled€š šFederalismšš€(64€FR€43255,€August€10,€1999),Ļā ārequires€EPA€to€develop€an€accountable€process€to€ensure€š šmeaningful€and€timely€input€byĻState€and€local€officials€in€the€development€of€regulatory€policies€that€have€federalismĻimplications.šš€€š šPolicies€that€have€federalism€implicationsšš€is€defined€in€the€ExecutiveĻOrder€to€include€regulations€that€have€š šsubstantial€direct€effects€on€the€States,€on€theĻrelationship€between€the€national€government€and€the€States,€or€on€the€distribution€ofĻpower€and€responsibilities€among€the€various€levels€of€government.šš€€Under€Section€6€ofĻExecutive€Order€13132,€EPA€may€not€issue€a€regulation€that€has€federalism€implications,Ļthat€imposes€substantial€direct€compliance€costs,€and€that€is€not€required€by€statute,€unlessĻthe€Federal€government€provides€the€funds€necessary€to€pay€the€direct€compliance€costsĻincurred€by€the€State€and€local€governments,€or€EPA€consults€with€State€and€local€officialsĻearly€in€the€process€of€developing€the€proposed€regulation.€€The€EPA€also€may€not€issue€aĻregulation€that€has€federalism€implications€and€that€preempts€State€law€unless€the€AgencyĻconsults€with€State€and€local€officials€early€in€the€process€of€developing€the€proposedĻregulation.Ģą ` ąThis€final€rule€does€not€have€federalism€implications.€€It€will€not€have€substantialĻdirect€effects€on€the€States,€on€the€relationship€between€the€national€government€and€theĻStates,€or€on€the€distribution€of€power€and€responsibilities€among€the€various€levels€ofĻgovernment,€as€specified€in€Executive€Order€13132.€€This€final€rule€is€a€revision€to€anĻexisting€rule€already€being€used€by€State€and€local€governments.€€The€revisions€have€noĻimpact€on€how€State€and€local€governments€apply€the€rule.€€Thus,€the€requirements€ofĻsection€6€of€the€Executive€Order€do€not€apply€to€this€rule.ĢŠ @-(, ŠņņD.€€Paperwork€Reduction€ActóóŠ ° ŠĢą ` ąThis€final€rule€does€not€contain€any€information€collection€requirements€subject€toĻthe€Office€of€Management€and€Budget€review€under€the€Paperwork€Reduction€Act€ofĻ1980,€44€U.S.C.€3501€ņņet€seqóó.€€Š  ` ŠĢŌ  ŌņņE.€€Regulatory€FlexibilityóóŠ Ą  ŠĢą ` ąEPA€has€determined€that€it€is€not€necessary€to€prepare€a€regulatory€flexibilityĻanalysis€in€connection€with€this€final€rule.€€EPA€has€also€determined€that€this€rule€will€notĻhave€a€significant€economic€impact€on€a€substantial€number€of€small€entities.€ą Š ąŠ  p Šą ` ąThis€final€rule€does€not€have€a€significant€impact€on€a€substantial€number€of€smallĻentities€because€no€additional€cost€will€be€incurred€by€such€entities€because€of€the€changesĻspecified€by€the€rule.€€The€requirements€of€the€final€rule€reaffirm€the€existing€designĻspecifications€for€a€COMS€to€demonstrate€conformance€with€PS-1.€€The€final€rule€clarifiesĻthe€verification€procedures€for€the€design€specifications,€as€well€as€clarifies€theĻresponsibilities€of€manufacturers€of€opacity€monitors€and€the€owners/operators€withoutĻplacing€additional€burden€on€either€parties.€ĢĢņņF.€€Unfunded€Mandates€ActóóŠ ø'#& ŠĢą ` ąTitle€II€of€the€Unfunded€Mandates€Reform€Act€of€1995€(UMRA),€Public€Law€104„¼4,€establishes€requirements€for€Federal€agencies€to€assess€the€effects€of€their€regulatoryŠ @-(, Šactions€on€State,€local,€and€tribal€governments€and€the€private€sector.€€Under€Section€202Ļof€the€UMRA,€EPA€generally€must€prepare€a€written€statement,€including€a€cost„benefitĻanalysis,€for€proposed€and€final€rules€with€š šFederal€mandatesšš€that€may€result€inĻexpenditures€to€State,€local,€and€tribal€governments€in€the€aggregate,€or€to€the€privateĻsector,€of€$100€million€or€more€in€any€one€year.€€Before€promulgating€an€EPA€rule€forĻwhich€a€written€statement€is€needed,€section€205€of€the€UMRA€generally€requires€EPA€toĻidentify€and€consider€a€reasonable€number€of€regulatory€alternatives€and€adopt€the€leastĻcostly,€most€cost„effective,€or€least€burdensome€alternative€that€achieves€the€objectives€ofĻthe€rule.€€The€provisions€of€section€205€do€not€apply€when€they€are€inconsistent€withĻapplicable€law.€€Moreover,€section€205€allows€EPA€to€adopt€an€alternative€other€than€theĻleast€costly,€most€cost„effective€or€least€burdensome€alternative€if€the€AdministratorĻpublishes€with€the€final€rule€an€explanation€why€that€alternative€was€not€adopted.€€BeforeĻEPA€establishes€any€regulatory€requirements€that€may€significantly€or€uniquely€affect€smallĻgovernments,€including€tribal€governments,€it€must€have€developed€under€section€203€ofĻthe€UMRA€a€small€government€agency€plan.€€The€plan€must€provide€for€notifyingĻpotentially€affected€small€governments,€enabling€officials€of€affected€small€governments€toĻhave€meaningful€and€timely€input€in€the€development€of€EPA€regulatory€proposals€withĻsignificant€Federal€intergovernmental€mandates,€and€informing,€educating,€and€advisingĻsmall€governments€on€compliance€with€the€regulatory€requirements.Ģą ` ąEPA€has€determined€that€this€rule€does€not€include€a€Federal€mandate€that€mayĻresult€in€expenditures€of€$100million€or€more€for€State,€local,€or€tribal€governments€in€theĻaggregate,€or€the€private€sector€in€any€one€year.€€This€rule€does€not€include€additionalĻrequirements€for€the€performance€specifications€of€opacity€monitors;€the€rule€only€clarifiesŠ @-(, Šthe€language€in€the€specification.€€Thus,€todayššs€rule€is€not€subject€to€the€requirements€ofĻsections€202€and€205€of€the€UMRA.€€EPA€has€determined€that€this€rule€contains€noĻregulatory€requirements€that€might€significantly€or€uniquely€affect€small€governments.€ĻAgain,€the€rule€does€not€add€any€new€requirements;€it€only€clarifies€the€existingĻrequirements.Ō#† XMXXX×}}Œ#ŌŌ‡X×}XX XMŌŠ  ` Šą ` ąĢņņG.€€National€Technology€Transfer€and€Advancement€ActóóŠ Ą  ŠĢą ` ąThe€National€Technology€Transfer€and€Advancement€Act€of€1995€(NTTAA),ĻPublic€Law€104„113,€section€12(d)€(15€U.S.C.€272€note)€directs€EPA€to€use€voluntaryĻconsensus€standards€in€its€regulatory€activities€unless€to€do€so€would€be€inconsistent€withĻapplicable€law€or€otherwise€impractical.€€Voluntary€consensus€standards€are€technicalĻstandards€(e.g.,€materials€specifications,€test€methods,€sampling€procedures,€and€businessĻpractices)€that€are€developed€or€adopted€by€voluntary€consensus€standards€bodies.€€TheĻNTTAA€directs€EPA€to€provide€Congress,€through€OMB,€explanations€when€the€AgencyĻdecides€not€to€use€available€and€applicable€voluntary€consensus€standards.€€ThisĻrulemaking€involves€technical€standards.€€EPA€decided€to€use€a€voluntary€consensusĻstandard€developed€and€adopted€by€the€American€Society€for€Testing€and€MaterialsĻ(ASTM),€ASTM€D€6216„98,€Standard€Practice€for€Opacity€Monitor€Manufacturers€toĻCertify€Conformance€with€Design€and€Performance€Specifications.€€This€standard€wasĻchosen€because€it€was€developed€by€ASTM€with€EPA€involvement.€€The€standard€usedĻthe€requirements€outlined€in€PS„1€and€developed€clear€and€concise€verification€proceduresĻfor€the€requirements.€€Copies€of€the€ASTM€standard€can€be€obtained€by€contacting€theŠ @-(, ŠAmerican€Society€for€Testing€and€Materials,€100€Barr€Harbor€Drive,€West€Conshohocken,ĻPennsylvania€19428.€€ĢŌ#† XMXXX×}Ķ£#ŌŌ‡X×}XX XMŌĢŌ  ŌņņH.€€Executive€Order€13045óóŠ 8 ˆ ŠĢą ` ąExecutive€Order€13045:€š šProtection€of€Children€from€Environmental€Health€RisksĻand€Safety€Risksšš€(62€FR€19885,€April€23,€1997)€applies€to€any€rule€that€(1)€is€determinedĻto€be€"economically€significant"€as€defined€under€Executive€Order€12866,€and€(2)Ļconcerns€an€environmental€health€or€safety€risk€that€EPA€has€reason€to€believe€may€have€aĻdisproportionate€effect€on€children.€€If€the€regulatory€action€meets€both€criteria,€theĻAgency€must€evaluate€the€environmental€health€or€safety€effects€of€the€planned€rule€onĻchildren,€and€explain€why€the€planned€regulation€is€preferable€to€other€potentially€effectiveĻand€reasonably€feasible€alternatives€considered€by€the€Agency.Ģą ` ąEPA€interprets€Executive€Order€13045€as€applying€only€to€those€regulatory€actionsĻthat€are€based€on€health€or€safety€risks,€such€that€the€analysis€required€under€section€5„501Ļof€the€Order€has€the€potential€to€influence€the€regulation.€€This€rule€is€not€subject€toĻExecutive€Order€13045€because€it€does€not€establish€an€environmental€standard€intendedĻto€mitigate€health€or€safety€risks.ĢĢņņI.€€Congressional€Review€ActóóŠ ø'#& ŠĢą ` ąThe€Congressional€Review€Act,€5€U.S.C.€€801€et€seq.,€as€added€by€the€SmallĻBusiness€Regulatory€Enforcement€Fairness€Act€of€1996,€generally€provides€that€before€aŠ @-(, Šrule€may€take€effect,€the€agency€promulgating€the€rule€must€submit€a€rule€report,€whichĻincludes€a€copy€of€the€rule,€to€each€House€of€the€Congress€and€to€the€Comptroller€GeneralĻof€the€United€States.€€EPA€will€submit€a€report€containing€this€rule€and€other€requiredĻinformation€to€the€U.S.€Senate,€the€U.S.€House€of€Representatives,€and€the€ComptrollerĻGeneral€of€the€United€States€prior€to€publication€of€the€rule€in€the€ņņFederal€Registeróó.€€AŠ  ` Šmajor€rule€cannot€take€effect€until€60€days€after€it€is€published€in€the€ņņFederal€Registeróó.€Š č 8  ŠThis€action€is€not€a€š šmajor€rulešš€as€defined€by€5€U.S.C.€Ō#† XMXXX×}ó©#ŌŌ‡X×}XX XMŌ€804€(2).€€This€rule€will€beŠ Ą  Šeffective€[INSERT€DATE€180€DAYS€AFTER€DATE€OF€PUBLICATION€IN€THEĻFEDERAL€REGISTER].ĢĢņņJ.€€Executive€Order€13084:€Consultation€and€Coordination€with€Indian€TribalŠ  p ŠGovernmentsóóŠ ųH Šą ` ąUnder€Executive€Order€13084,€EPA€may€not€issue€a€regulation€that€is€not€requiredĻby€statute,€that€significantly€or€uniquely€affects€the€communities€of€Indian€tribalĻgovernments,€and€that€imposes€substantial€direct€compliance€costs€on€those€communities,€Ģunless€the€Federal€government€provides€the€funds€necessary€to€pay€the€direct€complianceĻcosts€incurred€by€the€tribal€governments,€or€EPA€consults€with€those€governments.€€IfĻEPA€complies€by€consulting,€Executive€Order€13084€requires€EPA€to€provide€to€theĻOffice€of€Management€and€Budget,€in€a€separately€identified€section€of€the€preamble€to€theĻrule,€a€description€of€the€extent€of€EPAššs€prior€consultation€with€representatives€ofĻaffected€tribal€governments,€a€summary€of€the€nature€of€their€concerns,€and€a€statementĻsupporting€the€need€to€issue€the€regulation.€€In€addition,€Executive€Order€13084€requiresĻEPA€to€develop€an€effective€process€permitting€elected€officials€and€other€representativesŠ @-(, Šof€Indian€tribal€governments€š što€provide€meaningful€and€timely€input€in€the€developmentĻof€regulatory€policies€on€matters€that€significantly€or€uniquely€affect€their€communities.šš€ĻTodayššs€rule€does€not€significantly€or€uniquely€affect€the€communities€of€Indian€tribalĻgovernments.€€€This€rule€revises€an€existing€regulation€which€details€the€performance€andĻdesign€specifications€for€continuous€opacity€monitoring€systems.€€Accordingly,€theĻrequirements€of€section€3(b)€of€Executive€Order€13084€do€not€apply€to€this€rule.€ĢList€of€Subjects€in€40€CFR€Part€60Ģą ` ąEnvironmental€protection,€Air€pollution€controlŌ#† XMXXX×}>²#ŌŌ‡X×}XX XMŌ;€Continuous€emission€monitoring;Š ˜č  ŠIncorporation€by€referenceŌ#† XMXXX×}ݹ#ŌŌ‡X×}XX XMŌ;€Opacity;Ō#† XMXXX×}oŗ#ŌŌ‡X×}XX XMŌ€Particulate€matter;Ō#† XMXXX×}»ŗ#ŌŌ‡X×}XX XMŌ€Performance€specification;Š pĄ ŠPreparation,€submittal,€and€adoption€of€State€implementation€plans;€Transmissometers;ĻVisible€emissionsŌ#† XMXXX×}»#ŌŌ‡X×}XX XMŌ.Š  p ŠÓÓą ` ąĢÓ-°X°¤˜ģ °§X-ÓŌ  Ō________________________________ą0 D ąņņ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€óóą€(#(#K(#D(#D(#ąˆŠ ä4 ŠDated:€July€31,€2000.ĢĢCarol€M.€Browner,ĢAdministrator.ĢÓÓą ü ąŠ  €Š ŠÓ6XƒXš Dx’’°‚X¤˜ģ46Óą ` ąFor€the€reasons€stated€in€the€preamble,€€title€40,€chapter€I€of€the€Code€of€FederalĻRegulations€is€amended€as€follows:Ģņ ņPart€60€„€Standards€of€Performance€for€New€Stationary€Sourcesó óŠ `° Šą ` ą1.€€The€authority€citation€for€part€60€continues€to€read€as€follows:€Ģą ` ąAuthority:€€42U.S.C.7401,€7411,€7413,€7414,€7416,€7601,€and€7602.ĢSubpart€AŌ#† XMXXX×}ź»#ŌŌ‡X×}XX XMŌ€„€General€ProvisionsŠ č 8  Šņ ņó óŌ#† XMXXX×}bæ#ŌŌ‡X×}XX XMŌĢą ` ą2.€€Amend€šš€60.13€by€revising€paragraphs€(d)(1)€and€(d)(2)€as€follows:€€Ģņņšš€60.13€€Monitoring€requirementsóó.Š pĄ Š*€€*€€*€€*€€*Ģą ` ą(d)(1)€€Owners€and€operators€of€a€CEMS€installed€in€accordance€with€theĻprovisions€of€this€part,€must€automatically€check€the€zero€(or€low€level€value€between€0Ļand€20percent€of€span€value)€and€span€(50€to€100percent€of€span€value)€calibration€driftsĻat€least€once€daily€in€accordance€with€a€written€procedure.€€The€zero€and€span€must,€as€aĻminimum,€be€adjusted€whenever€either€the€24-hour€zero€drift€or€the€24„hour€span€driftĻexceeds€two€times€the€limit€of€the€applicable€performance€specification€in€appendixB.€ĻThe€system€must€allow€the€amount€of€the€excess€zero€and€span€drift€to€be€recorded€andĻquantified€whenever€specified.€€Owners€and€operators€of€a€COMS€installed€in€accordanceĻwith€the€provisions€of€this€part,€must€automatically,€intrinsic€to€the€opacity€monitor,€checkĻthe€zero€and€upscale€(span)€calibration€drifts€at€least€once€daily.€€For€a€particular€COMS,Ļthe€acceptable€range€of€zero€and€upscale€calibration€materials€is€as€defined€in€theĻapplicable€version€of€PS-1€in€appendix€B€of€this€part.€€For€a€COMS,€the€optical€surfaces,Ļexposed€to€the€effluent€gases,€must€be€cleaned€before€performing€the€zero€and€upscaleŠ @-(, Šdrift€adjustments,€except€for€systems€using€automatic€zero€adjustments.€€The€opticalĻsurfaces€must€be€cleaned€when€the€cumulative€automatic€zero€compensation€exceedsĻ4percent€opacity.Ģą ` ą(2)€€Unless€otherwise€approved€by€the€Administrator,€the€following€proceduresĻmust€be€followed€for€a€COMS.€€Minimum€procedures€must€include€an€automated€methodĻfor€producing€a€simulated€zero€opacity€condition€and€an€upscale€opacity€condition€using€aĻcertified€neutral€density€filter€or€other€related€technique€to€produce€a€known€obstruction€ofĻthe€light€beam.€€Such€procedures€must€provide€a€system€check€of€all€active€analyzerĻinternal€optics€with€power€or€curvature,€all€active€electronic€circuitry€including€the€lightĻsource€and€photodetector€assembly,€and€electronic€or€electro„mechanical€systems€andĻhardware€and€or€software€used€during€normal€measurement€operation.Ģ*€€*€€*€€*€€*€€Ģņ ņó óŌ#† XMXXX×}Ōæ#ŌŌ‡X×}XX XMŌĢą ` ą3.€€Amend€šš€60.17€by€adding€paragraph€(a)(64)€as€follows:Ģņņšš€60.17€Incorporation€by€referenceóó.Š €Š Š*€€*€€*€€*€€*Ģą ` ą(a)€*€*€*€Ģą ` ą(64)€ASTM€D€6216„98€Standard€Practice€for€Opacity€Monitor€Manufacturers€toĻCertify€Conformance€with€Design€and€Performance€Specifications,€IBR€approvedĻ[INSERT€DATE€180€DAYS€AFTER€DATE€OF€PUBLICATION€IN€THE€FEDERALĻREGISTER]€for€appendix€B,€PS-1.Ģ*€€*€€*€€*€€*Ģą ` ą4.€€Appendix€B,€Performance€Specification€1€is€revised€to€read€as€follows:Š  @-(, Šą@f f ąAPPENDIX€B€„€PERFORMANCE€SPECIFICATIONSˆĢ*€€€€€€€€€€€€€€*€€€€€€€€€€€€€€*€€€€€€€€€€€€€€*€€€€€€€€€€€€€*Ģą@  ąPERFORMANCE€SPECIFICATION€1€-€Specifications€and€TestˆĢą@ś ś ąProcedures€for€Continuous€Opacity€Monitoring€Systems€inˆĢą@(($ąStationary€SourcesˆĢĢ1.0€€What€is€the€purpose€and€applicability€of€Performance€Specification€1?Ģą ` ąPerformance€Specification€1€(PS-1)€provides€(1)€requirements€for€the€design,Ļperformance,€and€installation€of€a€continuous€opacity€monitoring€system€(COMS)€and€(2)Ļdata€computation€procedures€for€evaluating€the€acceptability€of€a€COMS.€€It€specifiesĻactivities€for€two€groups€(1)€the€owner€or€operator€and€(2)€the€opacity€monitorĻmanufacturer.Ģą ` ą1.1€€Measurement€Parameter.€€PS-1€covers€the€instrumental€measurement€ofĻopacity€caused€by€attenuation€of€projected€light€due€to€absorption€and€scatter€of€the€lightĻby€particulate€matter€in€the€effluent€gas€stream.Ģą ` ą1.2€€What€COMS€must€comply€with€PS-1?€€If€you€are€an€owner€or€operator€of€aĻfacility€with€a€COMS€as€a€result€of€this€Part,€then€PS-1€applies€to€your€COMS€if€one€ofĻthe€following€is€true:€Ģą0 ` ą(1)€€your€facility€has€a€new€COMS€installed€after€€(INSERT€180€DAYS€AFTERĻTHE€DATE€OF€PUBLICATION€OF€THE€FINAL€RULE€IN€THE€FEDERALĻā āREGISTER);€orА)ą$(` (#` (# Šą0 ` ą(2)€€your€COMS€is€replaced,€relocated,€or€substantially€refurbished€(in€the€opinionĻof€the€regulatory€authority)€after€[INSERT€180€DAY