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ÓÔ_Ô€ÌÌ€€€€€€€€€€€€€€€€€€€€€€€€€€July€10,€1998ÌÌÌÌMEMORANDUMÌÌSUBJECT:€€Delegation€of€40€CFR€Part€63€General€Provisions€Authorities€to€State€and€LocalÌ€€€€€€€€€€Air€Pollution€Control€AgenciesÌÌFROM:€€€€€John€S.€Seitz,€Director€/s/€John€SeitzÌ€€€€€€€€€€Office€of€Air€Quality€Planning€and€Standards€(MD-10)ÌÌTO:€€€€€€€See€AddresseesÌÌÌ€€€€€This€memorandum€is€to€provide€guidance€to€the€EPA€Regional€Offices€on€delegation€ofÌdiscretionary€authorities€relating€to€air€toxics€in€40€CFR€part€63,€subpart€A€(the€GeneralÌProvisions)€to€State€and€Local€Air€Pollution€Control€(S/L)€agencies€through€40€CFR€part€63,Ìsubpart€E€(Approval€of€State€Programs).€€Under€the€General€Provisions,€the€EPA€AdministratorÌhas€the€authority€to€approve€certain€changes€to,€or€make€decisions€under,€specific€GeneralÌProvisions€requirements.€€Questions€have€been€raised€by€the€Regions€about€whether€S/L€agenciesÌmay€make€the€same€discretionary€decisions€when€they€are€delegated€the€General€Provisions.€ÌÌ€€€€€In€explaining€the€straight€delegation€process€for€delegating€air€toxics€provisions€to€S/LÌagencies€under€40€CFR€part€63,€subpart€E,€we€did€not€clarify€what€discretionary€authorities€areÌdelegated€to€S/L€agencies€when€they€seek€straight€delegation€of€the€General€Provisions.€€AlthoughÌthis€is€briefly€discussed€in€the€proposed€General€Provisions'€preamble€(Federal€Register,€AugustÌ11,€1993,€page€42775-42777),€the€forthcoming€proposed€subpart€E€revisions€will€fill€that€gap€byÌclarifying€which€discretionary€authorities€may€be€delegated€to€S/L€agencies€through€straightÌdelegation€of€the€General€Provisions.€€At€your€discretion,€the€Regional€Offices€must€then€specifyÌin€delegation€agreements€or€documents€which€of€the€subpart€A€authorities€are€being€delegated€toÌeach€State.€€We€recommend€that€you€begin€implementing€these€changes€as€soon€as€possible.€ÌTherefore,€this€memorandum€is€intended€to€explain€the€changes€and€provide€guidance€for€you€toÌbegin€implementing€the€changes€now.€€Neither€this€memorandum€nor€the€subpart€E€rulemakingÌchanges€any€source-specific€decisions€that€have€already€been€made€under€the€General€Provisions,Ìbut€the€guidance€in€this€memorandum€should€be€used€as€guidance€for€all€future€decisionsÌregarding€the€General€Provisions'€authorities.ÌÌ€€€€€To€implement€these€changes,€you€will€need€to€clarify€with€your€S/L€agencies€whichÌGeneral€Provisions'€authorities€have€and€have€not€been€delegated.€€In€cases€where€you€may€haveÌdelegated€authorities€in€the€past€that€should€no€longer€be€delegated,€€you€will€need€to€inform€yourÌS/L€agencies€that€delegation€of€these€authorities€will€be€revoked.ÌÐ @-(, Ѐ€€€€At€this€time,€we€are€also€providing€clarification€of€section€63.6(i)(1),€"Extension€ofÌCompliance€with€Emission€Standards,"€General€Provisions€authority.€€This€section€states€"(u)ntilÌan€extension€of€compliance€has€been€granted€by€the€Administrator€(or€a€State€with€an€approvedÌpermit€program)€under€this€paragraph,€the€owner€or€operator€of€an€affected€source€subject€to€theÌrequirements€of€this€section€shall€comply€with€all€applicable€requirements€of€this€part."€€It€is€ourÌinterpretation€that€this€authority€does€not€require€delegation€through€subpart€E€and,€instead,€isÌautomatically€granted€to€States€as€part€of€their€part€70€operating€permits€program€approvalÌregardless€of€whether€the€operating€permits€program€approval€is€interim€or€final.€€Additionally,€itÌis€our€interpretation€that€the€State€would€not€need€to€have€been€delegated€a€particular€sourceÌcategory€or€have€issued€a€part€70€operating€permit€for€a€particular€source€to€grant€that€source€aÌcompliance€extension.ÌÌ€€€€€We€are€also€providing€clarification€of€section€63.5(e)€and€(f),€"Approval€and€DisapprovalÌof€Construction€and€Reconstruction,"€General€Provisions€authority.€€The€Clean€Air€Act€asÌamended€(1990€Amendments),€sections€112(i)(1)€and€(3)€state€that€the€"Administrator€(or€a€StateÌwith€a€permit€program€approved€under€title€V)"€can€determine€whether€a€source€will€comply€withÌthe€standard€if€constructed€properly.€€It€is€our€interpretation€that€this€authority€does€not€requireÌdelegation€through€subpart€E€and,€instead,€is€automatically€granted€to€States€as€part€of€their€Ìpart€70€operating€permits€program€approval.€ÌÌ€€€€€Link€to€section€112(l):€€This€guidance€only€addresses€the€case€where€the€GeneralÌProvisions€are€delegated€to€an€S/L€agency€through€straight€delegation€under€section€112(l)Ìprovisions€which€were€promulgated€in€40€CFR€part€63,€subpart€E.€€Therefore,€the€guidanceÌaddresses€S/L€agencies'€authority€to€make€source-specific€decisions€only,€not€source-categoryÌwide€decisions.€€Any€S/L€agency€wishing€to€make€discretionary€decisions€on€a€source-categoryÌwide€basis€under€the€General€Provisions€or€any€other€part€63€requirement€would€need€to€use€the€Ìsection€112(l)€delegation€process€under€40€CFR€part€63,€subsections€63.92,€63.93,€or€63.94€toÌsubstitute€its€own€rule€or€program.€€When€subpart€E€revisions€are€promulgated,€section€63.97€willÌbe€added€to€the€above€list€as€a€delegation€option.€ÌÌ€€€€€Consistency€with€Previous€Policies:€€This€guidance€is€intended€to€be€consistent€withÌprevious€policies€developed€for€new€source€performance€standards€(NSPS)€under€40€CFR€Ìpart€60,€national€emission€standards€for€hazardous€air€pollutants€(NESHAP)€under€40€CFR€Ìpart€61,€and€for€changes€to€State€implementation€plans€(SIP's).€€Past€guidance€issued€for€NSPSÌchanges€has€permitted€delegation€to€S/L€agencies€of€all€the€Administrator's€authorities€exceptÌthose€that€require€Federal€rulemaking,€or€those€for€which€Federal€oversight€is€critical€to€ensuringÌnational€consistency€in€the€application€of€standards.€€Additionally,€such€delegations€were€notÌintended€to€give€S/L€agencies€the€authority€to€issue€interpretations€of€Federal€law€that€areÌsubsequently€binding€on€the€Federal€Government.€€Current€SIP€policy,€as€reflected€in€White€PaperÌNumber€2€for€Improved€Implementation€of€the€Part€70€Operating€Permits€Program,€permits€S/LÌagencies€to€alter€SIP€requirements€so€long€as€the€alternative€requirements€are€shown€to€be€equallyÌstringent€and€are€within€a€pre-approved€protocol€(and€so€long€as€public€review€is€provided€andÌEPA€approval€is€obtained).€€The€S/L€agencies€can€show€equivalent€stringency€by€providingÌsubstantive€criteria€in€SIPs€governing€the€implementation€of€alternative€requirements.ÌÌ€€€€€We€recognize€that€Regions€have€the€prerogative€to€approve€delegation€of€specificÌauthorities€to€some€S/L€agencies€and€not€to€others.€€Therefore,€we€encourage€Regions€to€provideÌas€clearly€as€possible€an€explanation€of€the€criteria€they€have€used€to€approve€or€disapproveÌdelegation€of€a€specific€authority,€and€to€apply€those€criteria€consistently€across€their€S/LÌagencies.€€Such€criteria€could€include€a€determination€of€whether€the€S/L€agency€has€sufficientÌexpertise€to€make€such€decisions,€or€a€determination€that€the€working€relationship€between€theÌRegion€and€the€S/L€agencies€is€such€that€individual€decisions€could€or€could€not€be€determinedÌthrough€consultation€on€an€"as€needed"€basis.€€For€example,€you€may€want€to€work€more€closelyÌwith€your€S/L€agencies€on€their€first€decision-making€for€some€authorities,€thus€gaining€assuranceÌthat€the€S/L€agencies€can€and€will€make€appropriate€decisions.€€We€also€recommend€that€RegionsÌobtain€copies€of€all€S/L€agencies'€alternative€determinations€for€their€records;€especially€whereÌnew€issues€are€addressed.€ÌÌDelegation€of€Specific€AuthoritiesÌÌ€€€€€The€part€63€General€Provisions€lists€15€specific€types€of€authorities€for€which€theÌAdministrator€may€make€discretionary€decisions€on€a€source-specific€basis.€€When€the€GeneralÌProvisions€are€delegated€to€an€S/L€agency,€such€discretion€may€be€appropriately€delegated,Ìprovided€the€stringency€of€the€underlying€standard€would€not€be€compromised.€ÌÌ€€€€€We€recognize€that,€in€order€for€Regional€Offices€to€have€the€authority€to€delegate€some€ofÌthe€authorities€outlined€in€this€memorandum€(such€as€intermediate€changes€to€test€methods),Ìdelegation€7-121€must€first€be€revised€to€delegate€these€authorities€to€the€Regions.€€We€intend€toÌmake€this€revision,€i.e.,€to€delegation€7-121,€as€soon€as€possible.€€Additionally,€the€Emission€ÇMeasurement€Center€of€the€Emissions€Monitoring€and€Analysis€Division€must€receive€copies€ofÌany€approved€intermediate€changes€to€test€methods€or€monitoring.€€Please€note€that€intermediateÌchanges€to€test€methods€must€be€demonstrated€as€equivalent€through€the€procedures€set€out€inÌEPA€method€301€(see€Attachment€1).€€This€information€will€be€used€to€compile€a€database€ofÌdecisions€that€will€be€accessible€to€the€S/L€agencies€and€Regions€for€reference€in€making€futureÌdecisions.€€Regions€are€asked€to€ensure€that€initial€intermediate€changes€to€testing€and€monitoringÌmade€in€each€Region€are€evaluated.€€All€intermediate€test€changes€and€State-issued€intermediateÌchanges€to€monitoring€should€be€provided€via€mail€or€facsimile€to:€€ÌÌ€€€€€€€€€€€€€€€Chief,€Source€Characterization€Group€AÌ€€€€€€€€€€€€€€€U.S.€EPA€(MD-19)Ì€€€€€€€€€€€€€€€Research€Triangle€Park,€NC€€27711Ì€€€€€€€€€€€€€€€Facsimile€Telephone€Number:€€(919)€541-1039ÌÌChanges€in€monitoring€issued€by€Regional€Offices€should€continue€to€be€posted€on€theÌApplicability€Determination€Index€(ADI).€€For€electronic€file€transfer€procedures€for€ADI€updates,Ìplease€contact€Belinda€Breidenbach€in€the€Office€of€Compliance€at€202-564-7022.ÌÌ€€€€€We€have€divided€the€General€Provisions€discretionary€authorities€into€two€categories,Ìbased€upon€the€relative€significance€of€each€discretionary€type€of€decision:€they€are€thoseÌauthorities€which€can€be€delegated€and€those€authorities€which€cannot€be€delegated.€€TheseÌcategories€are€delineated€below:ÌÌCategory€I.€€General€Provisions€That€May€Be€DelegatedÌÌ€€€€€In€general,€we€believe€that,€where€possible,€authority€to€make€decisions€which€are€notÌlikely€to€be€nationally€significant€or€to€alter€the€stringency€of€the€underlying€standard€should€beÌdelegated€to€S/L€agencies.€€While€we€understand€the€need€for€Federal€oversight€of€S/L€agencyÌdecision-making€which€will€ensure€that€the€delegated€authorities€are€being€adequatelyÌimplemented€and€enforced,€we€do€not€want€to€impede€S/L€agencies€in€running€the€part€70Ìoperating€permit€and€Federal€air€toxics€programs€with€oversight€that€is€cumbersome.€€WeÌrecommend€that€Regions€rely€on€their€existing€mechanisms€and€resources€for€oversight.€€DuringÌoversight,€if€the€Region€determines€that€the€S/L€agency€had€made€decisions€that€decreased€theÌstringency€of€the€standard,€then€corrective€actions€should€be€taken€and€the€source(s)€should€beÌnotified.€€Withdrawal€of€the€program€should€be€initiated€if€the€corrective€actions€taken€areÌinsufficient.€ÌÌ€€€€€The€authorities€listed€in€Table€1€may€be€delegated€to€S/L€agencies,€so€long€as€the€S/LÌagencies€have€the€capability€to€carry€out€the€Administrator's€responsibilities€and€any€decisionsÌmade€do€not€decrease€the€stringency€of€the€standards.€€Since€you€are€ultimately€responsible€for€all€ÇGeneral€Provisions€authorities'€decision-making€made€in€your€Region,€I€am€comfortable€withÌtrusting€your€judgement€about€which€of€the€Administrator's€discretionary€authorities€listed€hereÌshould€be€delegated€to€the€S/L€agencies€in€your€Region.€€When€the€Region€delegates€any€categoryÌI€authority€to€the€S/L€agency,€it€could€be€accomplished€either€when€the€General€Provisions€areÌdelegated€or€at€the€time€that€each€relevant€maximum€achievable€control€technology€(MACT)Ìstandard€is€delegated,€with€the€exception€of€approval€of€construction€and€reconstruction€(40€CFRÌpart€63,€section€63.5),€which€should€be€delegated€when€the€General€Provisions€are€delegated.ÌÌ€€€€€There€are€some€category€I€authorities,€such€as€approval€of€intermediate€alternatives€to€testÌmethods,€for€which€you€should€be€notified€when€decisions€are€made€by€your€S/L€agencies.€€Also,Ìyou€may€want€to€monitor€the€progress€of€S/L€agencies'€decision-making,€in€addition€to€updatingÌyour€files€for€compliance€and€enforcement€matters.€€We€have€indicated€these€authorities€in€ÌTable€1€with€an€asterisk.€€We€encourage€you€to€document,€in€delegation€agreements€or€delegationÌrulemaking,€the€request€for€notification€when€decisions€are€made€regarding€the€indicated€Ìcategory€I€authorities.€€ÌÌCategory€II.€€General€Provisions€That€May€Not€Be€DelegatedÌÌ€€€€€Authorities€listed€in€this€section€are€those€decisions€which€could€result€in€a€change€to€theÌstringency€of€the€underlying€standard,€which€are€likely€to€be€nationally€significant,€or€which€mayÌrequire€a€rulemaking€and€subsequent€Federal€Register€notice.€€Therefore,€these€authorities€mustÌbe€retained€by€the€EPA€Regional€Office€or€EPA€Headquarters.€€As€a€result,€the€followingÌauthorities€in€Table€2€may€not€be€delegated€to€S/L€agencies€(all€references€are€to€sections€of€40ÌCFR€part€63,€subpart€A):ÌÌ€€€€€If€you€have€any€questions,€or€would€like€to€discuss€this€matter€further,€please€contact€meÌat€(919)€541-5608,€or€Tom€Driscoll€of€my€staff€at€(919)€541-5135.ÌÇTable€1.€€General€Provisions'€Authorities€that€may€be€DelegatedÌÌÌSection€ÌAuthoritiesÌÌÌSection€63.1€€€ÌApplicability€DeterminationsÌÌÌSection€63.6(e)ÌOperation€and€Maintenance€Requirements€-€ÌResponsibility€for€Determining€ComplianceÌÌÌSection€63.6(f)ÌCompliance€with€Non-Opacity€Standards€-ÌResponsibility€for€Determining€ComplianceÌÌÌSection€63.6(h)ÌCompliance€with€Opacity€and€VisibleÌEmissions€Standards€-€Responsibility€forÌDetermining€ComplianceÌÌÌSections€63.7(c)(2)(i)€and€(d)ÌApproval€of€Site-Specific€Test€PlansÌÌÌSection€63.7(e)(2)(i)*ÌApproval€of€Minor€Alternatives€to€TestÌMethods€(see€Attachment€1)ÌÌÌSections€63.7(e)(2)(ii)€and€(f)*ÌApproval€of€Intermediate€Alternatives€to€TestÌMethods€(see€Attachment€1)ÌÌÌSection€63.7(e)(2)(iii)ÌApproval€of€Shorter€Sampling€Times€andÌVolumes€When€Necessitated€by€ProcessÌVariables€or€Other€FactorsÌÌÌSections€63.7(e)(2)(iv)€and€(h)(2),€(3)Ì€Waiver€of€Performance€TestingÌÌÌSections€63.8(c)(1)€and€(e)(1)ÌApproval€of€Site-Specific€PerformanceÌEvaluation€(monitoring)€Test€PlansÌÌÌSection€63.8(f)*ÌApproval€of€Minor€Alternatives€to€MonitoringÌ(see€Attachment€1)ÌÌÌSection€63.8(f)*ÌApproval€of€Intermediate€Alternatives€toÌMonitoring€(see€Attachment€1)ÌÌÌSections€63.9€and€63.10ÌApproval€of€Adjustments€to€Time€Periods€forÌSubmitting€Reports€ÌÌ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€Ç€€€€€€€€Table€2.€€Authorities€That€May€Not€Be€DelegatedÌÌÌSection€ÌAuthorityÌÌÌSection€63.6(g)ÌApproval€of€Alternative€Non-OpacityÌEmission€StandardsÌÌÌSection€63.6(h)(9)ÌApproval€of€Alternative€Opacity€StandardÌÌÌSections€63.7(e)(2)(ii)€and€(f)ÌApproval€of€Major€Alternatives€to€TestÌMethods€(see€Attachment€1)ÌÌÌSection€63.8(f)ÌApproval€of€Major€Alternatives€to€MonitoringÌ(see€Attachment€1)ÌÌÌSection€63.10(f)ÌWaiver€of€Recordkeeping€--€allÌÌÇAddressees:ÌDirector,€Office€of€Ecosystem€Protection,€Region€IÌDirector,€Division€of€Environmental€Planning€and€Protection,€Region€IIÌDirector,€Air€Protection€Division,€Region€IIIÌDirector,€Air,€Pesticides€and€Toxics€Management€Division,€Region€IVÌDirector,€Air€and€Radiation€Division,€Region€VÌDirector,€Multimedia€Planning€and€Permitting€Division,€Region€VIÌDirector,€Air,€RCRA€and€Toxics€Division,€Region€VIIÌAssistant€Regional€Administrator,€Office€of€Pollution€Prevention,€Ì€€€€€State€and€Tribal€Programs,€Region€VIIIÌDirector,€Air€and€Toxics€Division,€Region€IXÌDirector,€Office€of€Air€Quality,€Region€XÌÌAttachmentsÌÌcc:€€B.€€Buckheit,€2242A€€€€€€€€€€€€€€€€Ì€€€€€C.€€Garlow,€2111A€€€€€€€€€€€€€€€€€€Ì€€€€€B.€€Hunt,€MD-14B€€€€€€€€€€€€€€€€€€€Ì€€€€€B.€€Jordan,€MD-13Ì€€€€€S.€€Mitoff,€2223AÌ€€€€€J.€€Seitz,€MD-10Ì€€€€€L.€€Wegman,€MD-10ÌÌbcc:€€€€€€K.€€Blanchard,€MD-12Ì€€€€€F.€€Dimmick,€MD-12Ì€€€€€K.€€Kaufman,€MD-12Ì€€€€€J.€€Szykman,€MD-13Ì€€€€€Regional€Air€Toxics€CoordinatorsÌÌThis€letter€has€been€concurred€with€William€Lamason,€SCGA,€Emission€Measurement€Center,€ÌCharles€Garlow,€OECA,€and€verbally€from€Patrick€Chang,€OGC.ÌÌOAQPS:ITPID:IIG:TDriscoll:cjbaines:x1-5319:MD-12:June€17,€1998:ÌFile:€Driscoll/delauth9.mem€ÌÌÇ€€€€€€€€€€€€€€€€€€€€€€€€€€€ATTACHMENT€1ÌÌ€€€€€Intermediate€change€to€monitoring€is€a€modification€to€federally€required€monitoringÌinvolving€"proven€technology"€(generally€accepted€by€the€scientific€community€as€equivalent€orÌbetter)€that€is€applied€on€a€site-specific€basis€and€that€may€have€the€potential€to€decrease€theÌstringency€of€the€compliance€and€enforcement€measures€for€the€relevant€standard.€€Though€site-specific,€an€intermediate€decrease€may€set€a€national€precedent€for€a€source€category€and€mayÌultimately€result€in€a€revision€to€the€federally€required€monitoring.€€Examples€of€intermediateÌchanges€to€monitoring€include,€but€are€not€limited€to:€(1)€use€of€a€continuous€emission€monitoringÌsystem€(CEMS)€in€lieu€of€a€parameter€monitoring€approach;€€(2)€changes€to€quality€controlÌrequirements€for€parameter€monitoring;€and€(3)€use€of€an€electronic€data€reduction€system€in€lieuÌof€manual€data€reduction.ÌÌ€€€€€Intermediate€change€to€a€test€method€is€a€within-method€modification€to€a€federallyÌenforceable€test€method€involving€"proven€technology"€(generally€accepted€by€the€scientificÌcommunity€as€equivalent€or€better)€that€is€applied€on€a€site-specific€basis€and€that€may€have€theÌpotential€to€decrease€the€stringency€of€the€associated€emission€limitation€or€standard.€ÌIntermediate€changes€are€not€approvable€if€they€decrease€the€stringency€of€the€standard.€€ThoughÌsite-specific,€an€intermediate€change€may€set€a€national€precedent€for€a€source€category€and€mayÌultimately€result€in€a€revision€to€the€federally€enforceable€test€method.€€In€order€to€be€approved,Ìan€intermediate€change€must€be€validated€according€to€EPA€method€301€(part€63,€appendix€A)€toÌdemonstrate€that€it€provides€equal€or€improved€accuracy€and€precision.€€Examples€of€intermediateÌchanges€to€a€test€method€include,€but€are€not€limited€to:€€(1)€modifications€to€a€test€method'sÌsampling€procedure€including€substitution€of€sampling€equipment€that€has€been€demonstrated€forÌa€particular€sample€matrix€and€the€use€of€a€different€impinger€absorbing€solution;€(2)€changes€inÌsample€recovery€procedures€and€analytical€techniques,€such€as€changes€to€sample€holding€timesÌand€use€of€a€different€analytical€finish€with€proven€capability€for€the€analyte€of€interest;€and€(3)Ì"combining"€a€federally-required€method€with€another€proven€method€for€application€to€processesÌemitting€multiple€pollutants.€€As€an€example,€Region€IX€and€the€CARB€have€developed€a€testingÌprotocol€to€determine€whether€California€chromium€electroplaters€needed€to€"retest"€for€theÌChromium€Electroplating€NESHAP.€€This€testing€protocol€has€been€attached€(Attachment€2)€forÌyour€information€should€you€choose€to€use€it.€€Again,€these€examples€should€only€be€approved€ifÌthey€do€not€decrease€the€stringency€of€the€monitoring€requirement.ÌÌ€€€€€Major€change€to€monitoring€is€a€modification€to€federally€required€monitoring€that€usesÌunproven€technology€or€procedures€or€is€an€entirely€new€method€(sometimes€necessary€when€theÌrequired€monitoring€is€unsuitable).€€A€major€change€to€a€test€method€may€be€site-specific€or€mayÌapply€to€one€or€more€source€categories€and€will€usually€set€a€national€precedent.€€Examples€ofÌmajor€changes€to€a€test€method€include,€but€are€not€limited€to:€€(1)€use€of€a€new€monitoringÌapproach€developed€to€apply€to€a€control€technology€not€contemplated€in€the€applicableÌregulation;€(2)€use€of€a€predictive€emission€monitoring€system€(PEMS)€in€place€of€a€required€Çcontinuous€emission€monitoring€system€(CEMS);€(3)€use€of€alternative€calibration€procedures€thatÌdo€not€involve€calibration€gases€or€test€cells;€(4)€use€of€an€analytical€technology€that€differs€fromÌthat€specified€by€a€performance€specification;€€and€(5)€use€of€alternative€averaging€times€forÌreporting€purposes.ÌÌ€€€€€Major€change€to€a€test€method€is€a€modification€to€a€federally€enforceable€test€methodÌthat€uses€unproven€technology€or€procedures€or€is€an€entirely€new€method€(sometimes€necessaryÌwhen€the€required€test€method€is€unsuitable).€€A€major€change€to€a€test€method€may€be€site-specific€or€may€apply€to€one€or€more€source€categories€and€will€usually€set€a€national€precedent.€ÌIn€order€to€be€approved,€a€major€change€must€be€validated€according€to€EPA€method€301Ì(part€63,€appendix€A).€€Examples€of€major€changes€to€a€test€method€include,€but€are€not€limitedÌto:€€(1)€use€of€an€unproven€analytical€finish;€(2)€use€of€a€method€developed€to€fill€a€test€methodÌgap;€(3)€use€of€a€new€test€method€developed€to€apply€to€a€control€technology€not€contemplated€inÌthe€applicable€regulation;€and€(4)€"combining"€two€or€more€sampling/analytical€methods€(at€leastÌone€unproven)€into€one€for€application€to€processesÌÌ€€€€€Minor€change€to€monitoring€is€a€modification€to€federally€required€monitoring€thatÌ(a)€does€not€decrease€the€stringency€of€the€compliance€and€enforcement€measures€for€the€relevantÌstandard;€(b)€has€no€national€significance€(e.g.,€does€not€affect€implementation€of€the€applicableÌregulation€for€other€affected€sources,€does€not€set€a€national€precedent,€and€individually€does€notÌresult€in€a€revision€to€the€monitoring€requirements);€€and€(c)€is€site-specific,€made€to€reflect€orÌaccommodate€the€operational€characteristics,€physical€constraints,€or€safety€concerns€of€anÌaffected€source.€€Examples€of€minor€changes€to€monitoring€include,€but€are€not€limited€to:€€Ì(1)€modifications€to€a€sampling€procedure,€such€as€use€of€an€improved€sample€conditioningÌsystem€to€reduce€maintenance€requirements;€(2)€increased€monitoring€frequency;€andÌ(3)€modification€of€the€environmental€shelter€to€moderate€temperature€fluctuation€and€thusÌprotect€the€analytical€instrumentation.ÌÌ€€€€€Minor€change€to€a€test€method€is€a€modification€to€a€federally€enforceable€test€methodÌthat€(a)€does€not€decrease€the€stringency€of€the€emission€limitation€or€standard;€(b)€has€no€nationalÌsignificance€(e.g.,€does€not€affect€implementation€of€the€applicable€regulation€for€other€affectedÌsources,€does€not€set€a€national€precedent,€and€individually€does€not€result€in€a€revision€to€the€testÌmethod);€and€€(c)€is€site-specific,€made€to€reflect€or€accommodate€the€operational€characteristics,Ìphysical€constraints,€or€safety€concerns€of€an€affected€source.€€Examples€of€minor€changes€to€aÌtest€procedure,€such€as€a€modified€sampling€traverse€or€location€to€avoid€interference€from€anÌobstruction€in€the€stack,€increasing€the€sampling€time€or€volume,€use€of€additional€impingers€for€aÌhigh€moisture€situation,€accepting€particulate€emission€results€for€a€test€run€that€was€conductedÌwith€a€lower€than€specified€temperature,€substitution€of€a€material€in€the€sampling€train€that€hasÌbeen€demonstrated€to€be€more€inert€for€the€sample€matrix,€and€changes€in€recovery€and€analyticalÌtechniques€such€as€a€change€in€quality€control/quality€assurance€requirements€needed€to€adjust€forÌanalysis€of€a€certain€sample€matrix.€€ÇNOTE:€The€authority€to€approve€decreases€in€sampling€times€and€volumes€whenÌnecessitated€by€process€variables€has€typically€been€delegated€in€conjunction€with€theÌminor€changes€to€test€methods,€but€these€types€of€changes€are€not€included€within€the€scopeÌof€minor€changes.ÌÇ€€€€€€€€€€€€€€€€€€€€€€€€€€€ATTACHMENT€2ÌÌÌ€€€€€€€€€€€€€€DESCRIPTION€OF€THE€TECHNICAL€REVIEWÌ€€€€€€€€€€€€€€€PROTOCOL€FOR€PERFORMANCE€TESTS€OF€Ì€€€€€€€€€€€€€€€CALIFORNIA€CHROME€PLATING€SOURCESÌÌIntroductionÌÌ€€€€€In€1988,€the€CARB€adopted€a€statewide€airborne€toxics€control€measure€(ATCM)€for€theÌcontrol€of€hexavalent€chrome€emissions€from€chrome€platers€(both€decorative€and€hard)€andÌchromic€acid€anodizers.€€In€general,€the€California€ATCM€required€facilities€to€install€equipmentÌor€modify€their€operation€to€minimize€emissions€of€hexavalent€chrome.€€In€addition€to€installingÌequipment€and€making€the€necessary€process€changes,€hard€chrome€platers€were€required€toÌdemonstrate€compliance€by€performing€a€District€-approved€source€test.€€ÌÌ€€€€€Since€the€State€ATCM€was€adopted,€the€majority€of€hard€chrome€platers€in€CaliforniaÌhave€complied€with€the€requirements€by€installing€and€source€testing€their€control€equipment€toÌdemonstrate€compliance€with€the€California€standards.ÌÌ€€€€€On€January€25,€1995,€the€EPA€promulgated€a€national€regulation€to€control€emissions€ofÌchromium€from€chrome€platers€and€anodizers.€€This€regulation€is€known€as€the€NESHAP€for€hardÌand€decorative€chromium€electroplating€and€chromium€anodizing€tanks.€€This€regulation€alsoÌrequires€facilities€to€demonstrate€compliance€by€performing€an€approved€emission€source€test.ÌÌ€€€€€Further,€on€January€30,€1997,€the€EPA€promulgated€certain€revisions€to€the€chromeÌNESHAP€dealing€with€the€monitoring,€recordkeeping€and€reporting€(MRR)€requirements€for€hardÌchromium€electroplaters€and€chromic€acid€anodizers€in€California.€€Specifically,€EPA€extended€theÌMRR€compliance€deadline€from€January€25,€1997€to€July€24,€1997.€€This€action€was€taken€toÌallow€time€for€CARB€to€establish€and€get€approved€MRR€requirements€for€these€sources€thatÌwould€be€at€least€as€stringent€as€the€Federal€NESHAP€requirements;€however,€that€work€remainsÌunfinished.€€The€Federal€NESHAP€requires€these€sources€to€monitor€applicable€parameters€on€andÌafter€the€date€on€which€the€initial€performance€test€is€required€to€be€completed,€which€is€July€24,Ì1997.€€It€is€consistent€with€the€revised€NESHAP€MRR€requirements€that€all€California€sourceÌtests€of€hard€chrome€platers€and€chromic€acid€anodizers€conducted€prior€to€July€24,€1997€beÌreviewed€according€to€the€performance€test€review€criteria€contained€herein€to€determineÌcompliance€with€the€applicable€NESHAP€emission€standard.€€This€recommendation€is€madeÌnotwithstanding€the€restrictions€identified€in€40€CFR€63€section€63.344(b)(2).ÌÌ€€€€€This€criteria€was€developed€by€a€team€of€chrome€plating/regulatory€professionalsÌrepresenting€EPA,€CARB,€Bay€Area€Air€Quality€Management€District,€South€Coast€Air€QualityÌManagement€District€(SCAQMD),€and€Pacific€Environmental€Services€(industry).€€The€criteriaÌare€necessary€in€reviewing€the€existing€chrome€plating€emissions€source€tests€in€California.€€It€isÌestimated€that€in€California€there€are€approximately€100€hard€chrome€platers,€150€decorativeÌchrome€platers€and€50€chromic€acid€anodizers,€over€half€of€which€have€performed€source€testsÌ(where€applicable).€€Many€of€these€source€tests€have€sufficient€information€and€quality€control€toÌdemonstrate€compliance€with€the€Federal€NESHAP€for€chrome€plating€and€anodizing.€€ThisÌdocument€is€to€present€and€discuss€the€criteria€developed€for€this€purpose.ÌÌNESHAP€Source€Testing€for€ComplianceÌÌ€€€€€The€NESHAP€standard€for€chrome€plating€and€anodizing€indicates€that€source€testing€toÌdemonstrate€compliance€with€the€standard€is€required€unless€the€facility€is€a€decorative€chromeÌplater€or€chromic€acid€anodizer€choosing€the€alternate€emission€limitation€of€45€dyne/cm€bathÌsurface€tension.€€In€accordance€with€this,€40€CFR€part€63€specifies€acceptable€source€testÌprocedures,€methods,€materials,€etc.€€Although€the€requirements€outlined€in€the€NESHAP€areÌspecific,€there€are€allowances€for€the€"owner€or€operator€of€an€affected€source€conduct[ing]Ìperformance€testing€at€startup€to€obtain€an€operating€permit€in€the€State€in€which€the€affectedÌsource€is€located,€the€results€of€such€testing€may€be€used€to€demonstrate€compliance€with€thisÌsubpart€.€.€.€"€(40€CFR€63.344).€€The€following€discussion€presents€a€step-by-step€approach€forÌdetermining€whether€an€existing€source€test€in€California€can€be€used€to€demonstrate€complianceÌwith€the€chrome€plating€and€anodizing€NESHAP.ÌÌDetermining€if€Existing€Source€Tests€Can€Be€Used€to€Demonstrate€ComplianceÌÌ€€€€€The€Chrome€Plating€Source€Test€Review€Criteria€Section€(see€below)€provides€a€step-by-step€process€for€the€review€of€existing€source€tests€in€light€of€the€NESHAP€standards.€€TheÌfollowing€is€a€discussion€of€each€of€the€criteria€steps€from€the€Chrome€Plating€Source€TestÌReview€Criteria€Section€with€an€explanation€of€the€rationale€for€the€chosen€process.ÌÌCriteria€Step€1.€€Compliance€with€the€NESHAP€Standards€Demonstrated?€€The€NESHAPÌstandards€are€in€terms€of€milligram€of€total€chrome€per€dry€standard€cubic€meter€(mg/dscm)€ofÌventilation€gas€flow.€€The€NESHAP€standards€are€listed€in€40€CFR€part€63,€section€63.342.€ÌEmission€standards€vary€depending€on€whether€the€facility€performs€hard€chrome€plating,Ìdecorative€chrome€plating,€chromic€acid€anodizing,€or€whether€the€facility€is€new€or€existing,€andÌhow€large€the€facility€is€(how€much€chrome€plating€is€performed€on€an€annual€basis).ÌÌ€€€€€Most€of€the€existing€chrome€emission€source€test€reports€provide€a€variety€of€informationÌincluding€test€date€and€time,€plating€bath€rectifier€amp-hours,€sample€volume,€ventilation€gasÌvelocity,€sample€flowrate€percent€isokinetic,€duct€temperature,€flowrate,€ventilation€gas€waterÌcontent,€total€and€hexavalent€chrome€catch,€as€well€as€chrome€emissions€on€a€process€rate€(amp-hrs)€and€concentration€basis.ÌÌÇ€€€€€-€If€the€resulting€average€source€test€emission€value€is€less€than€or€equal€to€the€applicableÌNESHAP€standard,€the€source€test€acceptability€determination€can€continue.€€ÌÌ€€€€€-€If€the€existing€source€test€does€not€demonstrate€compliance€with€the€NESHAP,€then€theÌfacility€operator€must€decide€what€course€of€action€to€take€for€a€remediation.€€For€example,€theÌfacility€operator€may€need€to€make€some€operational€or€design€changes€to€lower€the€emission€rateÌto€achieve€compliance€with€the€NESHAP€standards.€€A€retest€will€be€required.€€All€future€sourceÌtests€should€be€conducted€according€to€the€requirements€and€specifications€of€40€CFR€Ìpart€63.344€Performance€test€requirements€and€test€methods.€€ÌÌCriteria€Step€2.€€Was€the€Source€Test€Conducted€Under€Close€Approximation€of€NormalÌOperating€Conditions?€€Normal€operating€conditions€are€defined€as€normal€bath€temperatures€(+Ì10€deg€F),€normal€bath€composition€range€(within€5€percent),€normal€rectifier€amperage€range,Ìnormal€agitation€rates,€and€normal€voltage€loadings.€€For€the€purpose€of€demonstratingÌcompliance,€normal€operating€conditions€can€also€include€conditions€needed€to€meet€specificÌsource€test€requirements€such€as€the€use€of€dummy€parts€to€be€plated.ÌÌ€€Although€there€can€be€a€significant€variation€in€the€operating€conditions€from€one€platingÌshop€to€another,€most€chrome€platers€are€well€aware€of€their€individual€normal€operatingÌconditions€and€operate€on€a€consistent€basis€with€these€constraints.€€Significant€variation€from€theÌnormal€operating€mode€is€undesirable€for€quality€assurance€and€controllability€purposes.ÌÌ€€Facilities€may€have€increased€the€source€test€sampling€period€in€order€to€capture€theÌrequisite€sample€mass€for€analytical€detection.€€Extending€the€source€test€period€may€require€theÌuse€of€dummy€parts€rather€than€the€real€parts€that€would€normally€be€plated.€€An€example€of€thisÌis€a€Bay€Area€plater€which€plates€automobile€body€part€dies.€€Plating€such€a€part€for€a€longer€thanÌnormal€period€would€result€in€a€plated€part€with€tolerances€outside€of€specification€limits.€€ToÌavoid€ruining€an€expensive€automobile€die,€a€dummy€part€(a€large€sheet€of€steel,€sized€similar€toÌthe€die)€is€plated€for€the€time€period€required€to€meet€capture€requirements.ÌÌ€€-€If€the€source€test€was€conducted€under€close€approximation€of€normal€operatingÌconditions,€then€the€evaluator€can€proceed€to€the€next€step€in€the€evaluation€process,€step€3.ÌÌ€€-€If€the€source€test€was€conducted€under€conditions€deemed€abnormal,€the€facility€mustÌconduct€a€new€source€test.€€All€retests€should€be€conducted€according€to€the€requirements€andÌspecifications€of€40€CFR€part€63.344€Performance€test€requirements€and€test€methods.ÌÌCriteria€Step€3.€€Correct€Use€of€Approved€Test€Method?€€Source€tests€to€demonstrateÌcompliance€with€the€requirements€of€the€NESHAP€must€use€the€EPA€approved€source€testÌmethod.€€According€to€40€CFR€part€63.344€the€following€source€test€methods€have€been€deemedÌacceptable€to€demonstrate€compliance€with€the€NESHAP€standards:€€EPA€method€306€or€306AÌ(conducted€after€December€1991)€and€CARB€method€425.€€The€EPA€has€granted€a€verbalÌapproval€for€the€use€of€the€SCAQMD€method€205.1€for€total€chrome€analysis€only€and€will€issueÌan€official€letter€soon.ÌÌ€€Any€use€of€an€approved€source€test€method€must€be€done€in€strict€accordance€with€theÌrequirements€and€specifications€of€the€method€itself€and€performance€testing€requirements€ofÌsection€63.344€of€the€NESHAP.€€Such€requirements€include€sample€point€locations,€use€of€EPAÌmethod€5€source€test€train,€impinger€solution€compositions,€isokinetic€ratios,€sample€handling,Ìsampling€times,€sample€volume,€catch€mass€requirements,€etc.€€Implicit€in€the€use€of€an€approvedÌsource€test€method€is€the€correct€use€of€the€method€itself.€€Any€variation€in€the€source€testÌprocedure€will€trigger€a€retest€unless€the€change€has€been€approved€beforehand€by€the€EPA€andÌthe€local€permitting€authority.ÌÌCriteria€Step€4.€€Number€of€Runs:€€Paragraph€63.7(e)(3)€of€the€part€63€General€ProvisionsÌspecifies€at€least€three€sampling€runs€to€make€up€one€source€test.€€If€three€sampling€runs€wereÌperformed,€the€reviewer€is€directed€to€proceed€on€to€review€criteria€step€5€(catch€massÌrequirement).ÌÌ€€<3€sampling€runs:€€Previous€source€tests€attempted€to€meet€the€requirement€for€at€leastÌthree€sampling€runs.€€For€some€previous€California€source€tests,€the€expected€ultra-lowÌconcentrations€of€chrome€in€the€exhaust€required€the€use€of€longer€than€normal€source€test€runsÌ(normal€sampling€run€length€is€120€minutes€and€normal€sampling€volume€is€1.7€dscm).ÌÌ€€€€€Some€operators€chose€(with€local€agency€approval)€to€perform€longer€sample€runs€toÌcapture€enough€sample€to€produce€a€chrome€emission€number€and€to€reduce€the€potential€forÌerror€with€minimal€chrome€capture.€€In€California€the€longer€times€ranged€from€3€to€8€hours€perÌsampling€run.€€Due€to€the€added€expense,€potential€problems€of€multiple€long€sampling€runs,€andÌthe€potential€operational€conflicts€due€to€reduced€production€from€multiple€sampling€runs,€theseÌfacilities€proposed€performing€one€or€two€long€duration€source€tests€instead€of€three€or€moreÌshorter€runs.€€ÌÌ€€€€€For€tests€where€less€than€three€sampling€runs€were€conducted,€the€reviewer€is€directed€toÌgo€to€criteria€step€6€to€determine€if€the€source€testing€results€are€far€enough€below€the€NESHAPÌemission€limit€to€warrant€acceptance.ÌÌÇ€€€€€Regarding€future€source€testing/Retesting:€€Unless€prior€approval€is€obtained€from€EPAÌand€the€local€air€quality€agency,€future€source€tests€will€require€at€least€three€sampling€runs€to€beÌacceptable.ÌÌCriteria€Step€5.€€Catch€Mass€Requirements:€€Consistent€with€the€discussion€in€section€2.2.2€ofÌmethod€306€in€40€CFR€part€63,€appendix€A,€it€is€recommended€that€the€catch€mass€requirementÌbe€at€least€five€times€the€limit€of€detection€for€the€analytical€method€chosen.€€Such€catch€massÌrequirements€produce€analytical€results€well€within€the€range€of€confidence.€€If€the€catch€massÌrequirements€are€not€met,€the€reviewer€is€directed€to€criteria€step€6.ÌÌCriteria€Step€6.€€Source€Test€Emission€Results€Compared€With€NESHAP€Limit:€€If€theÌcatch€mass€requirement€is€not€met,€the€reviewer€evaluates€the€resulting€emission€rate€according€toÌcriteria€step€6.€€Criteria€step€6€requires€that€the€source€test€results€be€can€be€accepted€forÌdemonstrating€compliance€with€the€NESHAP.€€A€factor€of€one€fifth€(20€percent)€is€consistent€withÌthe€catch€mass€requirements.ÌÌ€€Criteria€step€6€directs€that€if€the€source€test€results€were€greater€than€1/5€of€the€NESHAPÌstandard,€the€facility€must€retest.€€All€retests€should€be€conducted€according€to€the€requirementsÌand€specifications€of€40€CFR€part€63.344€Performance€test€requirements€and€test€methods.ÌÌ€€Regarding€future€source€testing/Retesting:€€Unless€prior€approval€is€given€from€EPA€andÌthe€local€air€quality€agency,€all€future€source€tests€will€require€at€least€three€sampling€runs€to€beÌacceptable.€€The€catch€mass€requirements€identified€in€40€CFR€part€63,€section€63.344€also€mustÌbe€met€unless€the€source€test€emission€result€is€<1/5€of€the€respective€NESHAP€emission€limit€orÌis€below€detection€levels.Ì€€Ì€€Other€Issues:€€Establishing€Monitoring€Parameter€Ranges€to€Ensure€Ongoing€ComplianceÌ€€Ì€€€€€Continued€compliance€with€the€chrome€plating€and€anodizing€NESHAP€is€assured€byÌ€€monitoring€of€specific€operating€parameters€associated€with€the€control€equipment.€€NormallyÌ€€operating€parameter€values€or€ranges€are€established€in€conducting€the€performance€test.€€SinceÌ€€many€California€source€tests€were€performed€before€the€final€adoption€and€understanding€of€theÌ€€NESHAP€monitoring€requirements,€some€alternate€procedures€may€be€necessary€to€establishÌ€€appropriate€ranges/values€for€the€monitoring€parameters.Ì€€Ì€€€€€€€Ç€€€€€The€Establishing€Monitoring€Pararmeters€to€Ensure€Ongoing€Compliance€Section€(seeÌ€€below)€provides€an€approach€to€establishing€the€monitoring€parameter€compliance€ranges€after€theÌ€€performance€test€is€completed.€€Where€applicable,€the€basic€requirements€include€the€following:Ì€€Ì€€€(1)€€Source€test€conducted€during€normal€operating€conditions.Ì€€Ì€€€(2)€€Flowrate€was€monitored/recorded€at€outlet€of€emission€control€device.Ì€€Ì€€€€€Control€Device€Pressure€Drop€and€Velocity€Pressure:€€Assuming€the€above€criteria€itemsÌ€€(1)€and€(2)€were€met€and€that€the€current€ventilation€gas€flowrate€is€within€10€percent€of€theÌ€€flowrate€determined€during€the€source€test,€the€current€control€device€pressure€drop€and/orÌ€€velocity€pressure€can€be€used€to€establish€the€appropriate€ranges/value€for€the€monitoringÌ€€parameters.€€Guidance€for€the€development€of€the€operating€parameter€range€is€found€in€Ì€€40€CFR€63€section€63.344.Ì€€Ì€€€€€Surface€Tension€Parameter€Development:€€If€the€surface€tension€was€monitored€during€theÌ€€performance€test,€the€facility€operator€should€use€the€higher€of€either€(1)€the€surface€tensionÌ€€parameter€measured€during€the€source€test;€or€(2)€45€dyne/cm€as€specified€in€the€NESHAP.€€If€theÌ€€surface€tension€was€not€monitored€during€the€source€test,€the€facility€should€use€45€dyne/cm€asÌ€€the€maximum€allowable€surface€tension€parameter€for€monitoring€ongoing€compliance.Ì€€Ì€€€€€Foam€Thickness€Parameter€Development:€€If€the€foam€additive€thickness€was€monitoredÌ€€during€the€performance€test,€the€facility€operator€should€use€the€lessor€of€either€(1)€the€foamÌ€€thickness€parameter€measured€during€the€source€test;€or€(2)€the€1€inch€foam€thickness€as€specifiedÌ€€in€the€NESHAP.€€If€the€foam€thickness€was€not€monitored€during€the€source€test,€then€the€facilityÌ€€should€use€1€inch€foam€thickness€as€the€minimum€allowable€thickness€parameter€for€monitoring€Ì€€ongoing€compliance.Ì€€€€Ç€€€€€€€€€Chrome€Plating€Source€Test€Review€CriteriaÌ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€Ì€€€€€The€following€criteria€are€to€be€used€for€those€chrome€plater€and€anodizer€performance€testsÌ€€conducted€in€the€State€of€California€prior€to€July€24,€1997.€€If€the€source€test€cannot€be€evaluatedÌ€€using€these€criteria,€then€the€facility€owner/operator€should€contact€Kingsley€Adeduro,€EPAÌ€€Region€IX€at€(415)€744-1177€for€guidance.Ì€€Ì(1)€€Compliance€with€the€NESHAP€Standards€Demonstrated?Ì€€€Y:€€Go€to€(2)Ì€€€N:€€Evaluate€operation/make€necessary€changes€then€perform€retest€according€to€Ì€€40€CFR€63.344.ÌÌ(2)€€Was€source€test€conducted€under€close€approximation€of€normal€operatingÌ€€€€€conditions?Ì€€€Y:€€Go€to€(3)Ì€€€N:€€Retest€according€to€40€CFR€part€63.344.ÌÌ(3)€€€€€Correct€Use€of€Approved€Test€Method€[CARB€425,€EPA€306,€EPA€306A€(conductedÌ€€€€€after€12/91),€SCAQMD€205.1€(€total€chrome€only)]Ì€€€Y:€€Go€to€(4)Ì€€€N:€Retest€according€to€40€CFR€part€63.344.ÌÌ(4)€€€€€Number€of€Sampling€RunsÌ€€€(a)€€3€or€more€runs:€€Go€to€(5)Ì€€€(b)€€1€or€2€runs:€€Go€to€(6)ÌÌ€€€€Ç(5)€€€€€Catch€Mass€Requirements€(at€least€5€times€the€limit€of€detection€for€the€analytical€method)Ì€€€Hex€Chrome€Analysis€Methods€€€€€Diphenylcarbazide€Colorimetric€TestÌ€€€€€€€€€€€€€€€€€€€€€€€€€Ion€Chromatography€with€Post-Column€Reactor€(ICPCR)Ì€€€Total€Chrome€Analysis€Methods:€€Atomic€Absorption€Graphite€Furnace€(AAGF)Ì€€€€€€€€€€€€€€€€€€€€€€€€€Inductively€Coupled€Argon€Plasmography€(ICAP)ÌÌ€€€Y:€€S/T€is€acceptableÌ€€€N:€€Go€to€(6)ÌÌ(6)€€€€€€€€€€Source€Test€Emission€Results€<20€prcent€(1/5)€of€the€NESHAP€Emission€Limit?Ì€€€Y:€€S/T€is€acceptableÌ€€€€€€€€N:€Retest€according€to€40€CFR€part€63.344.ÇEstablishing€Monitoring€Parameters€to€Ensure€Ongoing€ComplianceÌ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€Ì(A)€€Were€normal€operating€conditions€employed€during€source€test€performance?Ì€€€Y:€€Go€to€(B)Ì€€€N:€Retest€according€to€source€testing€and€operating€parameter€development€guidelines€ofÌ€€€€€€€€€€€€€€€40€CFR€part€63.344.ÌÌ(B)€€€€€Were€appropriate€operating€parameters€monitored/recorded€during€the€source€test?Ì€€€Y:€€Use€measured€parameter€values€to€establish€ranges€for€ongoing€complianceÌ€€€€€monitoring.Ì€€€N:€€€(a)€€If€bath€emissions€controlled€by€bath€controls€(surfactant€additive€or€€foam)€only€€€Ì€€€€€€€€€€€€€go€to€(E).Ì€€€€€€€(b)€€If€bath€emissions€controlled€by€bath€controls€and€downstream€control€device€go€€€Ì€€€€€€€€€€€€€to€(C)€and€(E).Ì€€€€€€€(c)€€If€bath€emission€controlled€by€downstream€control€device(s)€go€to€(C).ÌÌ(C)€€Was€control€device€outlet€flow€rate€recorded€during€the€source€test?Ì€€€Y:€€Go€to€(D).Ì€€€N:€Retest€according€to€source€testing€and€operating€parameter€range€developmentÌ€€€€€guidelines€of€40€CFR€part€63.344.ÌÌ(D)€€Determine€inlet€velocity€pressure€compliant€range€as€follows:€€(for€PBS€only)ÌÌ€€€Collect€concurrent€data€on€facility's€inlet€velocity€pressure,€and€scrubber€outlet€flow€rate.€Ì€€€€€If€the€current€scrubber€outlet€flow€rate€is€within€10€percent€of€the€outlet€flow€rateÌ€€€€€measured€during€the€source€testing,€then€the€current€inlet€velocity€pressure€value€can€beÌ€€€€€used€to€establish€the€compliant€range€for€continuous€monitoring.ÌÌ€€€Determine€control€device€pressure€drop€complaint€range€as€follows:€€(for€CMP,€FB€MistÌ€€€€€Eliminator,€PBS,€HEPA€Filter)Ì€€€€€Ç€€€Collect€concurrent€data€on€pressure€drop€across€the€control€device,€and€outlet€flow€rate.€Ì€€€€€If€the€outlet€flow€rate€is€within€10€percent€of€the€outlet€flow€rate€recorded€during€theÌ€€€€€source€testing,€then€the€current€pressure€drop€value€can€be€used€to€establish€the€compliantÌ€€€€€range€for€continuous€monitoring€if€the€controls€are€visually€inspected€and€the€workÌ€€€€€practice€standards€are€conducted€immediately€prior€to€collecting€current€pressure€dropÌ€€€€€data.ÌÌ(E)€€€€€Surfactant€Additive€Surface€Tension:€€If€surface€tension€was€monitored€during€the€sourceÌ€€€€€test,€use€the€higher€of€either€(1)€the€surface€tension€developed€during€the€source€test€orÌ€€€€€(2)€45€dyne/cm€surface€tension€for€demonstration€of€ongoing€compliance.€€If€no€surfaceÌ€€€€€tension€monitoring€during€source€test,€use€45€dyne/cm€as€surface€tension€parameter€forÌ€€€€€demonstration€of€ongoing€compliance.ÌÌ€€€Foam€Thickness:€€If€foam€thickness€was€monitored€during€the€source€test,€use€theÌ€€€€€minimum€thickness€parameter€for€demonstration€of€ongoing€compliance.€€If€no€foamÌ€€€€€thickness€monitoring€during€source€test,€use€1€inch€foam€blanket€as€parameter€forÌ€€€€€demonstration€of€ongoing€compliance.Ì€€