UNITEDSTATESENVIRONMENTALPROTECTIONAGENCYREGIONIII1650ArchStreetPhiladelphia,Pennsylvania19103DATE:DEC112009SUBJECT:TechnicalSupportDocument-Maryland;2002BaseYearEmissionsInventory,ReasonableFurtherProgressPlan,ContingencyMeasures,ReasonablyAvailableControlMeasures,andTransportationConformityBudgetsforthePhiladelphia19978-HourOzoneModerateNonattainmentAreaFROM:MariaA.Pino,AirQualityPlanningSpecialistOfficeofAirProgramPlanningTO:File7/TFIRU:CristinaFernandez,AssociateDirectorOfficeofAirProgramPlanningThisdocumentprovidesatechnicalreviewofarevisiontotheMarylandStateImplementationPlan(SIP)submittedbytheMarylandDepartmentoftheEnvironment(MDE)onJune4,2007toaddressemissionsinventory,reasonablefurtherprogress(RFP),reasonablyavailablecontrolmeasures(RACM)analysis,andcontingencymeasurerequirementsunderthe19978-hourozonenationalambientairqualitystandard(NAAQS)fortheCecilCountyportionofthePhiladelphiamoderatenonattainmentarea.TheSIPrevisionalsoestablishesamotorvehicleemissionsbudget(MVEB)for2008fortheCecilCountyportionofthePhiladelphiamoderatenonattainmentarea.Maryland’sSIPrevisionsubmittal,entitled“CecilCounty,Maryland8-HourOzoneStateImplementationPlanandBaseYearInventory,SIPNumber07-05,”willbereferredtoas“theCecilCounty8-hourozoneplan”throughoutthisdocument.A.BACKGROUNDI.GeneralRequirementsSection182oftheCleanAirAct(CAA)andtheEnvironmentalProtectionAgency’s(EPA’s)19978-hourozoneregulations(40CFR51.910)requireeachmoderateandabove8-hourozonenonattainmentareatosubmitanemissionsinventoryandRFPSIPrevisionthatdescribeshowtheareawillachieveactualemissionsreductionsofvolatileorganiccompounds(VOC)andnitrogenoxides(NOx)fromabaselineemissionsinventory.Anemissionsinventoryisanestimationofactualemissionsofairpollutantsinanarea.TheemissionsinventoryforanozonenonattainmentareacontainsVOCandNOxemissions,whichareprecursorstoozoneformation.Inthiscase,a“baseline”emissionsinventoryisrequiredfortheyear2002.Pursuanttosection172(c)(1)oftheCAA,statesarerequiredtosubmitplansfornonattainmentareasthatprovidefortheimplementofallreasonablyavailablecontrolmeasures(RACM)asexpeditiouslyaspracticable.Specifically,section172(c)(1)statesthefollowing:“Suchplanprovisionsshallprovidefortheimplementationofallreasonablyavailablecontrolmeasuresasexpeditiouslyaspracticable(includingsuchreductionsinemissionsfromexistingsourcesintheareaasmaybeobtainedthroughtheadoption,ataminimum,ofreasonablyavailablecontroltechnology)andshallprovideforattainmentofthenationalprimaryambientairqualitystandards.”ControlmeasuresthatwouldadvancetheattainmentdateareconsideredRACMandmustbeincludedintheSIP.RACMarenecessarytoensurethattheattainmentdateisachieved“asexpeditiousaspracticable.”Phase1ofthe8-hourozoneimplementationrule,publishedonApril30,2004(69FR23951),setoutcriteriaforclassifyingnonattainmentareasunderthe19978-hourozonestandard.ThePhase1rulealsoaddressedrevocationofthe1-hourNAAQS;howanti-backslidingprincipleswillensurecontinuedprogresstowardattainmentofthe8-hourozoneNAAQS;attainmentdates;andthetimingofemissionsreductionsneededforattainment.OnNovember29,2005,EPApublishedthePhase2finalruleforimplementationofthe8-hourstandard.ThePhase2ruleaddressedtheRFPcontrolandplanningobligationsastheyapplytoareasdesignatednonattainmentforthe19978-hourozoneNAAQS(70FR71612).ThePhase2finalrulewasrevisedonJune8,2007(72FR31727).Amongotherthings,thePhase1and2rulesoutlinetheSIPrequirementsanddeadlinesforvariousrequirementsinareasdesignatedasmoderatenonattainment.TherulessetaduedateofJune15,2007fortherequiredbaseyearemissioninventory,RFPplan,modelingandattainmentdemonstration,RACM,MVEB,andcontingencymeasures(40CFR51.908(a),(c)).Section182(b)(1)oftheCAAandEPA’s19978-hourozoneimplementationrule(40CFR51.910)requireeach8-hourozonenonattainmentareadesignatedmoderateandabovetosubmitforreviewandapprovalintoitsSIPanemissionsinventoryandRFPplanthatdescribeshowtheareawillachieveactualemissionsreductionsofVOCandNOxfromabaselineemissionsinventory.Foramoderate8-hourozonenonattainmentareawithanattainmentdatemorethan5yearsafterdesignation,a15percentRFPreductioninozoneprecursoremissionsisrequiredwithin6years(2002-2008).Foramoderateareawithanapproved15percentrate-ofprogress(ROP)planunderthe1,-hourstandard,statescanusereductionsfromVOCorNOxoracombinationofeither.ForamoderateareawithoutandapprovedROPplan,a15%reductioninVOCisrequired.Thereductionsmaycomefromanywherewithinthe8-hournonattainmentarea.Table1outlinestheserequirements.Table1.RF’PRequirementsforModerate8-HourOzoneNonattainmentAreaswithAttainmentDatesMorethan5YearsafterDesignationAreaRequirement40CFRReferenceWithapproved15%15%VOCand/orNOxreductions51.910(a)(1)(iii)(B)(2)&VOCROPplan(2002—2008)51.910(b)(2)(b)(ii)Withoutapproved15%VOCreductions(2002-2008).51.910(a)(1)(iii)(B)(1)15%VOCROPplanThereductionsmaycomefromanywherewithinthe8-hournonattainmentarea.Inaddition,RFPplansmustincludecontingencymeasures,whichareadditionalcontrols2thatwouldbeimplementediftheareafailstomakereasonablefurtherprogress.SeeCAAsection172(c)(9).Implementationofthesemeasureswouldprovideadditionalemissionsreductionsofupto3percentoftheadjustedbaseyearinventory(orlesserpercentagethatwillmakeuptheidentifiedshortfall).RFPplansmustalsoincludeaMVEB,whichistheallowableon-roadmobileemissionanareacanproduceandcontinuetodemonstrateRFP.See40CFR93.II.TheMarylandPortionofthePhiladelphiaArea,CecilCountyIn1997,EPArevisedthehealth-basedNAAQSforozone,settingitat0.08partspermillion(ppm)averagedoveran8-hourtimeframe.EPAsetthe8-hourozonestandardbasedonscientificevidencedemonstratingthatozonecausesadversehealtheffectsatlowerozoneconcentrationsandoverlongerperiodsoftime,thanwasunderstoodwhenthepre-existingI-hourozonestandardwasset.EPAdeterminedthatthe8-hourstandardwouldbemoreprotectiveofhumanhealth,especiallychildrenandadultswhoareactiveoutdoors,andindividualswithapre-existingrespiratorydisease,suchasasthma.OnApril30,2004(69FR23951),EPAfinalizeditsattainment/nonattainmentdesignationsforareasacrossthecountrywithrespecttothe8-hourozonestandard.TheseactionsbecameeffectiveonJune15,2004.AmongthosenonattainmentareasisthePhiladelphia-Wilmington-AtlanticCitymoderatenonattainmentarea(PhiladelphiaNAA).ThisNAAincludesCecilCountyinMaryland;Bucks,Chester,Delaware,MontgomeryandPhiladelphiaCountiesinPennsylvania;Atlantic,Burlington,Camden,CapeMay,Cumberland,Gloucester,Mercer,Ocean,andSalemCountiesinNewJersey;andtheentireStateofDelaware.PursuanttoPhase1ofthe8-hourozoneimplementationrule,anareawasclassifiedunderSubpart2oftheCAAbasedonits8-hourdesignvalueifthatareahada1-hourdesignvalueatorabove0.121ppm(thelowest1-hourdesignvalueinTable1ofSubpart2).Basedonthiscriterion,thePhiladelphiaNAAwasclassifiedunderSubpart2asmoderatenonattainmentareas.B.EVALUATIONOFSTATESUBMITTALI.BaseYearEmissionsInventoryAnemissionsinventoryisacomprehensive,accurate,andcurrentinventoryofactualemissionsfromallsources.Theemissionsinventoryisrequiredbysection172(c)(3)oftheCAA.Forozonenonattainmentareas,theemissionsinventoryneedstocontainVOCandNOxemissionsbecausethesepollutantsareprecursorsofozone.EPArecommended2002asthebaseyearemissionsinventory,andisthereforethestartingpointforcalculatingRFP.Marylandsubmittedits2002baseyearemissionsinventoryforitsportionofthePhiladelphiaNAA(i.e.,CecilCounty)onJune4,2007.AsummaryoftheCecilCounty2002baseyearVOCandNOxemissionsinventoryisincludedinTable2,below.3Table2.CecilCounty2002BaseYearVOC&NOxEmissionsinTonsperDay(tpd)EmissionSourceCategoryVOCNOxPoint0.280.02StationaryArea4.930.20Non-RoadMobile8.372.97On-RoadMobile4.0014.22Biogenics42.940Total(excludingBiogenics)17.5817.40Marylanddiscussesits2002baseyearinventoryfortheCecilCountyinSection3.0oftheCecilCounty8-hourozoneplan.AppendixAoftheCecilCounty8-hourozoneplancontainsMaryland’s2002baseyearinventoryforCecilCounty.EPARegion3’sAirQualityAnalysisBranch(AQAB)reviewedMaryland’s2002baseyearinventoryforCecilCountyusingtheappropriateEPApolicyandguidance.Pleaseseetheattached“TechnicalSupportDocument(TSD)forCecilCounty,Maryland,locatedinthePhiladelphia-Wilmington-AtlanticCity,PANJ-DE8HourOzoneStateImplementationPlan(SIP)AttainmentDemonstrationandBaseYearInventory,”preparedbyAliceH.ChowandsignedbyWalterWilkie,AirQualityAnalysisBranchChief,onDecember19,2008(CecilCountyEmissionInventoryTSD).AsdiscussedindetailintheCecilCountyEmissionInventoryTSD,Maryland’sprocedures,methodologies,andresultfortheCecilCounty2002baseyearinventoryareapprovable.II.AdjustedBaseYearInventory,2008RFPTargetLevelsTheprocessfordeterminingtheemissionsbaselinefromwhichtheRFPreductionsarecalculatedisdescribedinsection182(b)(1)oftheCAAand40CFR51.910.Thisbaselinevaluehasbeendeterminedtobethe2002adjustedbaseyearinventory.Sections182(b)(l)(B)and(D)requiretheexclusionfromthebaseyearinventoryofemissionsbenefitsresultingfromtheFederalMotorVehicleControlProgram(FMVCP)regulationspromulgatedbyJanuary1,1990andtheReidVaporPressure(RVP)regulationspromulgatedJune11,1990(55FR23666).TheFMVCPandRVPemissionsreductionsaredeterminedbythestateusingEPA’son-roadmobilesourceemissionsmodelingsoftware,MOBILE6.TheFMVCPandRVPemissionreductionsarethenremovedfromthebaseyearinventorybythestate,resultinginanadjustedbaseyearinventory.TheemissionreductionsneededtosatisfytheRFPrequirementarethencalculatedfromtheadjustedbaseyearinventory.ThesereductionsarethensubtractedfromtheadjustedbaseyearinventorytoestablishtheemissionstargetfortheRFPmilestoneyear(2008).FormoderateareaslikethePhiladelphiaNAA,theCAAspecifiesa15percentreductioninozoneprecursoremissionsoveraninitial6-yearperiod.InthePhase2Rule(70FR71612),EPAinterpretedthisrequirementforareasthatwerealsodesignatednonattainmentandclassifiedasmoderateorhigherforthe1-hourozonestandard.InthePhase2Rule,EPAprovidedthatanareaclassifiedasmoderateorhigherthathasthesameboundariesasanarea,orisentirelycomposedofseveralareasorportionsofareas,forwhichEPAfullyapproveda15percentplanforthe1-hourNAAQS,isconsideredtohavemettherequirementsofsection182(b)(1)oftheCAAforthe8-hourNAAQS.Inthissituation,amoderatenonattainmentareaissubjecttoRFPundersection172(c)(2)oftheCAAandshallsubmit,nolaterthan3yearsafterdesignationforthe8-hourNAAQS,aSIPrevisionthatmeetstherequirementsof40CFR51.910(b)(2).The4RFPSIPrevisionmustprovidefora15percentemissionreduction(eitherNOxand/orVOC)accountingforanygrowththatoccursduringthe6-yearperiodfollowingthebaselineemissionsinventoryyear,thatis,2002-2008.TheMarylandportionofthePhiladelphiaozonenonattainmentareaunderthe1-hourozonestandardhadthesameboundaryastheMarylandportionofthePhiladelphiaNAAunderthe19978-hourozonestandard.ThePhiladelphianonattainmentareaunderthe1-hourozonestandardwasclassifiedassevere.OnJuly12,1995,Marylandsubmitteda15%PlanSIPrevisionfortheMarylandportionofthePhiladelphia1-hourozonenonattainmentarea(i.e.,CecilCounty).OnJuly29,1997,EPAapprovedMaryland’s15%planforthePhiladelphiasevereozonenonattainmentarea(62FR40457).Therefore,accordingtothePhase2Rule,theRFPplanfortheCecilCountymayuseeitherNOxorVOCemissionsreductions(orboth)toachievethe15percentemissionreductionrequirement.Accordingtosection182(b)(1)(D)oftheCAA,emissionreductionsthatresultedfromtheFMVCPandRVPrulespromulgatedpriorto1990arenotcreditableforachievingRFPemissionreductions.Therefore,the2002baseyearinventorymustbeadjustedbysubtractingtheVOCandNOxemissionreductionsthatareexpectedtooccurbetween2002andthefuturemilestoneyearsduetotheFMVCPandRVPrules.Theadjustmentsarecalculatedinthefollowingmanner:A)EstimatetheactualanthropogenicbaseyearinventoryforbothVOCandNOxin2002withall2002controlprogramsinplace.B)Usingthesamehighwayvehicleactivityinputsusedtocalculatetheactual2002inventory,runtheappropriatemotorvehicleemissionsmodelfor2002andfor2008withallpost-1990CAAmeasuresturnedoff.Anyotherlocalinputsforvehicleinspectionandmaintenance(I/M)programsshouldbesetaccordingtotheprogramthatwasrequiredtobeinplacein1990.FuelRVPshouldbesetat9.0or7.8dependingontheRVPrequiredinthelocalareaasaresultoffuelRVPregulationspromulgatedinJune1990.C)Calculatethedifferencebetween2002and2008VOCemissionsfactorscalculatedinStepBandmultiplyby2002VMT.TheresultistheVOCemissionsreductionsthatwilloccurbetween2002and2008withoutthebenefitsofanypost-1990CAAmeasures.Thesearethenon-creditableVOCreductionsthatoccuroverthisperiod.Calculatethedifferencebetween2002and2008NOxemissionsfactorscalculatedinStepBandmultiplyby2002VMT.ThisresultistheNOxemissionsreductionsthatwilloccurbetween2002and2008withoutthebenefitsofanypost-1990CAAmeasures.Thesearethenon-creditableNOxreductionsthatoccuroverthisperiod.D)Subtractthenon-creditableVOCreductionscalculatedinStepCfromtheactualanthropogenic2002VOCinventoryestimatedinStepA.Subtractthenon-creditableNOxreductionscalculatedinStepCfromtheactualanthropogenic2002NOxinventoryestimatedinStepA.TheseadjustedVOCandNOxinventoriesarethebasisforcalculatingthetargetlevelofemissionsin2008.5E)ThetargetlevelofVOCandNOxemissionsin2008neededtomeetthe2008ROPrequirementisanycombinationofVOCandNOxreductionsfromtheadjustedinventoriescalculatedinStepDthattotal18percent.Forexample,thetargetlevelofVOCemissionsin2008couldbea10percentreductionfromtheadjusted.Marylandsetsoutitscalculationsfortheadjustedbaseyearinventoryand2008RFPtargetlevelsinSection5oftheCecilCounty8-hourozoneplan.A)TheCecilCounty2002anthropogenicbaseyearinventoryisfoundinTable5-1oftheCecilCounty8-hourozoneplan,andissummarizedinTable3,below.Table3.CecilCounty2002AnthropogenicBaseYearInventory(OzoneSeasontpd)SourceCategoryVOCPoint0.280.02Area4.930.20Non-Road8.372.97On-Road4.0014.22Total17.5817.40B&C)Marylandcalculatedthenon-creditableemissionreductionsbetween2002and2008bymodelingits2002and2008motorvehicleemissionswithallpost-1990CAAmeasuresturnedoff,andcalculatingthedifference.SeeTables5-2and5-3oftheCecilCounty8-hourozoneplan.Thenon-creditablereductionsarecalculatedinTable4,below.Table4.CecilCountyNon-CreditableEmissionReductions(OzoneSeasontpd)SourceCategoryVOCNOx(i)2002On-Road5.4216.09(ii)2008On-Road4.7313.90Non-creditableReductions(i)—(ii)0.692.19D&E)Maryland’scalculationsoftheCecilCounty2002VOCandNOxinventoriesadjustedrelativeto2008andVOCandNOxtargetlevelsfor2008arefoundinTable5-4andAppendixCoftheCecilCounty8-hourozoneplan,andaresummarizedinTable5,below.Table5.CecilCounty2008RFPTargetLevelCalculationsOzoneSeasontpdDescriptionFormulaVOCNOxA2002Rate-OfProgressBaseYearInventory17.5817.40BFMVCP/RVPReductionsBetween2002And20080.692.19C2002AdjustedBaseYearInventoryRelativeTo2008A-B16.8915.21DRFPRatio0.070.08EEmissionsReductionsRequiredBetween2002&2008C*D1.181.22FfargetLevelfor2008C-E15.7113.99NOx6III.ProjectedInventoriesandDeterminationofRFPMarylanddescribesitsmethodsusedfordevelopingits2008projectedVOCandNOxinventoriesinSection4.0andAppendixBofthePhiladelphia8-hourozonepian.Projecteduncontrolledandcontrolled2008VOCandNOxemissionsarefoundinAppendixCofthePhiladelphia8-hourozoneplan.EPARegion3’sAQABreviewedtheproceduresMarylandusedtodevelopitsprojectedinventoriesandfoundthemtobereasonable.PleaseseetheattachedCecilCountyEmissionInventoryTSD.Projectedcontrolled2008emissionsfortheCecilCountyaresummarizedinTable4-3ofthePhiladelphia8-hourozoneplan.ThedatafromTable4-3ispresentedinTable6,below.Table6.CecilCounty2008ProjectedControlledVOC&NOxEmissionsEmissionSourceVOCEmissionsNOxEmissionsCategory(tpd)(tpd)Point0.390.02Area4.750.23Non-road7.232.87Mobile2.297.93Total14.6511.05Todetermineif2008RFPismetinCecilCounty,thetotalprojectedcontrolledemissionsmustbecomparedtothetargetlevelscalculatedintheprevioussectionofthisdocument.AsshownbelowinTable7,thetotalVOCandNOxemissionprojectionsmeetthe2008emissiontargets.Therefore,the2008REPinCecilCountyisdemonstrated.Table7.DeterminationofwhetherRFPismetin2008inCecilCountyVOCEmissionsNOxEmissionsDescription(tpd)(tpd)ITotal2008ProjectedControlled14.6511.05AEmissionsBTargetLevelfor200815.7113.99RFPmetifA<BYesYesIV.ControlMeasuresandEmissionReductionsforRFPThecontrolmeasureMarylandtookcreditforinordertomeettheREPrequirementinCecilCountyaredescribedinSection6.0oftheCecilCounty8-hourozoneplan.TomeettheRFPrequirementfortheCecilCounty,Marylandusedacombinationof(1)on-roadmobile,(2)non-roadmobile,and(3)areasourcecontrolmeasures.(1)On-RoadMobileMeasuresMarylandcalculatedtheemissionreductionsfor2008RFPusingtheMOBILEmodelforthefollowingmeasures:7•EnhancedVehicleInspectionandMaintenance(EnhancedIJM)TheCAArequiresenhancedJ/Mprogramsinserious,severe,andextremeozonenonattainmentareas,metropolitanstatisticalareas(MSA),andconsolidatedMSA(CMSA)portionsoftheOzoneTransportRegion(OTR)withurbanizedpopulationsover200,000.EnhancedI/MwasrequiredinthePhiladelphiasevere1-hourozonenonattainmentarea.Thatrequirementisstillinplaceduetotheanti-backslidingprovisionsofCAAsection110(1),whichrequire1-hourozoneI/Mprogramstocontinueuntiltheareashaveattainedthe19978-hourozonestandard.Maryland’senhancedI/Mprogram,COMAR11.14.08,waseffectiveonJanuary2,1995.EPAapprovedtheprogramintotheMarylandSIPonOctober29,1999.EPAapprovedMaryland’srevisionstotheprogramonJanuary16,2003.See40CFR52.1070.•TierIVehicleEmissionStandardsandNewFederalEvaporativeTestProceduresTheCAArequiredcleanerfederalmotorvehicleemissionsstandards(TierIstandards)beginningwithmodelyear1994.TheCAAalsorequiresauniformlevelofevaporativeemissioncontrols,whicharemorestringentthanmostevaporativecontrolsusedinoldervehicles.Thesefederallyimplementedprogramsaffectlightdutyvehiclesandtrucks.See40CFRPart86.•ReformulatedGasolineinOn-RoadVehiclesStaringin1995,onlyEPA-certifiedreformulatedgasolinewasallowedtobesoldininthenineworstozonenonattainmentareaswithpopulationsexceeding250,000,includingthePhiladelphiaNAA.ThefirstphaseoftheRFGprogramwasdesignedtoreduceozoneprecursoremissionsby64,000tonsperyear(tpy)inRFGareas.Thesecond(current)phaseoftheRFGprogrambeganin2000,andisdesignedtoreduceozoneprecursoremissionsbyanadditional41,000tpyinRFGareas.TheprogramhasbeeninplaceintheCecilCountysince1995.•NationalLowEmissionVehicle(NLEV)ProgramTheNLEVprogramisavehicletechnologyprogramthatprovideslightdutyvehiclesandtrucksthataresignificantlycleanerthanpre-1998models.TheNationalLEVprogramwasdevelopedthroughanunprecedented,cooperativeeffortbythenortheasternstates,automanufacturers,environmentalists,fuelproviders,EPA,andotherinterestedparties.NationalLEVvehiclesare70%cleanerthan1998models.TheNationalLEVprogramwillresultinsubstantialreductionsinVOCsandNOx.MarylandadoptedtheNLEVprogramonMarch22,1999,atCOMAR26.11.20.04.EPAapprovedCOMAR26.11.20.04intotheMarylandSIPonDecember28,1999.See40CFR52.1070.•FederalHeavy-DutyDieselEngine(HDDE)RuleEPA’sheavy-dutyenginesruleaddressesdieselvehiclesweighingmorethan8,500pounds.Thesestandardstookeffectin2007,andwillreduceemissionsfromnewHDDEsby95%usingultra-lowsulfurdieselfuelwillbeneeded.See40CFRPart86.8AsdiscussedintheCecilCountyEmissionInventoryTSD,EPARegion3’sAQABreviewedtheproceduresthatMDEusedtodevelopitsprojectedinventories,includingtheuseoftheMOBILEmodel,andfoundthemtobereasonable.On-roadMobile2008EmissionReductionsare:1.75tpdVOCand3.78tpdNOx.(2a)Non-RoadMeasures—NONROADModelMarylandcalculatedtheemissionreductionsfor2008RFPusingtheEPANONROADmodelforthefollowingmeasures:•Non-RoadSmallGasolineEnginesThisfederalmeasurerequiressmallgasoline-poweredengineequipment,suchaslawnandgardenequipment,manufacturedafterAugust1,1996tomeetfederalemissionsstandards.ThesemeasuresapplytoequipmentWithenginesoflessthan25horsepower.VOCemissionsresultfromcombustionandevaporationofgasolineusedtopowerthisequipment.See40CFRparts90and91.•Non-RoadDieselEnginesTierIandTierIIThisfederalmeasuresetsemissionsstandardsfornon-road,compression-ignitionutilityenginesratedat37kilowattsorabove.Thismeasureappliestoallcompression-ignitionenginesexceptenginesusedinaircraft,marinevessels,locomotivesandundergroundminingactivity.NOxemissionsresultfromcombustionofdieselfuelusedtopowerthisequipment.See69FR38957,June29,2004and40CFRParts9,69,80,86,89,94,1039,1048,1051,1065,and1068.•MarineEngineStandardsThismeasurecontrolsexhaustemissionsfromnewspark-ignition(SI)gasolinemarineengines,includingoutboardengines,personalwatercraftengines,andjetboatengines.See40CFRParts89,90,and91.•EmissionsStandardsforLargeSparkIgnitionEnginesThisfederalmeasurecontrolsVOCandNOxemissionsfromseveralgroupsofpreviouslyunregulatednon-roadengines,includinglargeindustrialspark-ignitionengines,recreationalvehicles,anddieselmarineengines.TheemissionstandardsapplytoallnewenginessoldintheUnitedStatesandanyimportedenginesmanufacturedafterthesestandardsbegin.Controlsonthecategoryoflargeindustrialspark-ignitionenginesarefirstrequiredin2004.Controlsontheotherenginecategoriesarerequiredbeginninginyearsafter2005.See40CFRParts89,90,91,94,1048,1051,1065,and1068.•ReformulatedGasolineUseinNon-RoadMotorVehiclesandEquipmentThisfederallymandatedmeasurerequirestheuseoflowerpolluting“reformulated”gasolineinthePhiladelphiaNAA.See“ReformulatedGasolineinOn-roadVehicles,”above.Thismeasureaffectsthevariousnon-roadmobilesourcesthatburngasoline,suchaslawnmowers,trimmers,generators,andcompressors.TheprogramhasbeeninplaceintheCecilCountysince1995.9AsdiscussedintheCecilCountyEmissionInventoryTSD,EPARegion3’sAQABreviewedtheproceduresthatMDEusedtodevelopitsprojectedinventories,includingtheuseoftheNONROADmodel,andfoundthemtobereasonable.Non-RoadMobile2008EmissionReductionsare:1.18tpdVOCand0.28tpdNOx.(2b)OtherNon-RoadMeasures•RailroadEngineStandards:Tier2Thismeasureestablishesemissionstandardsfornewlymanufacturedandremanufactureddiesel-poweredlocomotivesandlocomotiveengines.Thisregulationtookeffectin2000.See63FR18998,April16,1998,and40CFRParts92.EmissionBenefitCalculation:ProjectedreductionsarebasedonanemissionreductionfactorsderivedfromtheApril1998“LocomotiveEmissionStandardsRegulatorySupportDocument”fromEPA’sOfficeofMobileSources,whichisattached.Tables6-2and6-3ofthe“LocomotiveEmissionStandardsRegulatorySupportDocument”giveexpectedemissionreductionfactorsforclassIline-haulandclassIswitchrailroadenginesfortheyears2000through2040,in5yearincrements.Controlefficiency(CE)factorsfortheyears2002and2008werecalculatedthroughlinearinterpolation,asexplainedbelow.TheclassIline-haulrailroadengineNOxemissionreductionfactorsfor2000,2005,and2010are0.0100,0.3200,and0.4600,respectively.Interpolationfor2002:0.0100+(0.3200-0.0100)x2/5=0.134=CE2002Interpolationfor2010:0.3200+(0.4600-0.3200)x3/50.404=CE2008TheclassIswitchrailroadengineNOxemissionreductionfactorsfor2000,2005,and2010are0.0000,0.0700,and0.1700,respectively.Interpolationfor2002:0.0000+(0.0700-0.0000)x2/50.0280CE2002Interpolationfor2010:0.0700+(0.1700-0.0700)x3/5=0.1300=CE2008Todeterminetheprojecteduncontrolled2008VOCemissionsforrailroadengines,twosourceclassificationcodes(SCCs)wereidentified.ProjectedemissionswerepullingfromAppendixCoftheCecilCounty8-hourozoneplan.SeeTable8for2008projecteduncontrolledemissions.Table8.RailRoadEngineUncontrolled2008VOCEmissionsinCecilCountySCCSourceSubcategoryNOx(tpd)2285002005railroadlinehaulengines(ClassILine-Haul)0.7283990842285002010railroadyardengines(ClassISwitch)0TotalforCecilCounty0.728399084Emissionsbenefitsforbothsourcecategoriesarecalculatedbymultiplying2008uncontrolledemissionsbythedifferencebetweenCE2008andCE2002,andmultiplyingbytheruleeffectiveness(RE)andrulepenetration(RP)factors.2008Controlled—2008UncontrolledEmissions—Emissionsx{CE2008—CE2002]xRExRP10AssumingREandRPof1,the2008emissionsbenefitsforclassIline-haulandclassIswitchrailroadenginesareasfollows:ClassILine-Haul:0.728399084x(0.4040—0.1340)=0.19666tpdClassILine-Switch:0x(0.1300-0.0280)=0tpdRailroadEngineProjected2008EmissionReductionsare:0.20+0=0.20tpdNOx.(3)AreaSourceMeasures•ArchitecturalandIndustrialMaintenance(AIM)CoatingsAfederalmeasurerequiresreformulationofAIMcoatings,whicharefield-appliedcoatingsusedbyindustry,contractors,andhomeownerstocoathouses,buildings,highwaysurfaces,andindustrialequipmentfordecorativeorprotectivepurposes.VOCemissionsresultfromtheevaporationofsolventsfromthecoatingsduringapplicationanddrying.Maryland’sAIMrule,COMAR26.11.33,waseffectiveonMarch29,2004.EPAapprovedthisruleintotheMarylandSIPonMay12,2005,andapprovedrevisionstoCOMAR26.11.33onOctober19,2005.See40CFR52.1070.EmissionBenefitCalculation:Projectedreductionsarebasedonanemissionreductionfactorof31percent,basedontheE.H.Pechanreport,“ControlMeasureDevelopmentSupportAnalysisfortheOzoneTransportCommissionModelRules,”datedMarch31,2001(2001Pechanreport),whichisattached.Seepage15ofthe2001Pechanreport.Todeterminetheprojecteduncontrolled2008VOCemissionsforAIMcoatings,sixSCCswereidentified.ProjectedemissionswerepullingfromAppendixCoftheCecilCounty8-hourozoneplan.SeeTable9for2008projecteduncontrolledemissions.Table9.AIMCoatingUncontrolled2008VOCEmissionsinCecilCountySCCSourceSubcategoryVOCtpd2401002000solvent-basedarchitecturalsurfacecoatings0.2416695192401003000water-basedarchitecturalsurfacecoatings0.2133267092401008000trafficpaints0.0260621562401100000surfacecoatingsforindustrialmaintenance0.1361677772401200000surfacecoatings-othercategories0.1361677772401008999trafficpaintsolvents0.497390156TotalforCecilCounty1.250784094AIMCoatingProjected2008EmissionReductionsare:1.250784094x31%=0.39tpdVOC.•CommercialandConsumerProducts,PhaseIConsumerandcommercialproductsareitemssoldtoretailcustomersforhousehold,personalorautomotiveuse,alongwiththeproductsmarketedbywholesaledistributorsforusein11institutionalorcommercialsettingssuchasbeautyshops,schools,andhospitals.VOCemissionsresultfromtheevaporationofsolventcontentsintheproductsorsolventsusedaspropellants.ThismeasurerequiresthereformulationofcertainconsumerproductstoreducetheirVOCcontent.Maryland’sconsumerproductsrule(phase1),COMAR26.11.32,waseffectiveonAugust18,2003.EPAapprovedthisruleintotheMarylandSIPonDecember9,2003,andapprovedrevisionstoCOMAR26.11.32(phase2)onDecember10,2007.See40CFR52.1070.EmissionBenefitCalculation:Projectedreductionsarebasedonanemissionreductionfactorof14.2percent,basedonthe2001Pechanreport,page8.Todeterminetheprojecteduncontrolled2008VOCemissionsforconsumerandcommercialproducts,oneSCCwasidentified.ProjectedemissionswerepullingfromAppendixCoftheCecilCounty8-hourozoneplan.SeeTable10for2008projecteduncontrolledconsumerandcommercialproductsemissions.Table10.ConsumerandCommercialProductsUncontrolled2008VOCEmissionsinCecilCountySCCSourceSubcategoryVOC(tpd)2465000000Emissionsfromcommercial/consumersolvents0.95725863ConsumerandCommercialProductsProjected2008EmissionReductionsare:0.95725863x14.2%=0.14tpdVOC.•PortableFuelContainersRule,PhaseIThismeasureintroducesperformancestandardsforportablefuelcontainersandspouts,andisintendedtoreduceemissionsfromstorage,transportandrefuelingactivities.Therulealsoincludedadministrativeandlabelingrequirements.Maryland’sportablefuelcontainerrule,COMAR26.11.13.07,waseffectiveonJanuary21,2002.EPAapprovedthisruleintotheMarylandSIPonDecemberAugust30,2004(69FR38848),andapprovedrevisionstoCOMAR26.11.13.07(phase2)onJune17,2008(73FR40970).See40CFR52.1070.EmissionBenefitCalculation:ImplementationofthisrulebeganonJanuary1,2003.(69FR38849)Projectedreductionsarebasedonanemissionreductionfactorof75%afterfullimplementationafter10years.(SeeMDE’sundated“TechnicalSupportDocument,COMAR26.11.13.07,ControlofVOCEmissionsfromPortableFuelContainers”,attached.)Bythe2008ozoneseason,therulehadbeenimplementedfor5.5years.Emissionreductionfactor:75%x5.5years=41.25%10yearsTodeterminetheprojecteduncontrolled2008VOCemissionsforportablefuelcontainers,sixSCCswereidentified.ProjectedemissionswerepullingfromAppendixCoftheCecilCounty8-hourozoneplan.SeeTable11,below.12Table11.PortableFuelContainerProjectedUncontrolled2008VOCEmissionsinCecilCountySCCSourceSubcategoryVOC(tpd)2501011011Residential-PermeationArea0.0219142501011012Residential-DiurnalArea0.1917472501011016Residential-TransportArea0.0109572501012011Commercial-PermeationArea0.0021912501012012Commercial-DiurnalArea0.0339672501012016Commercial-TransportArea0.508404TotalforCecilCounty0.769181PortableFuelContainersProjected2008EmissionReductionsaretpd:0.769181x41.25%=0.32tpdVOC.RFPEmissionReductionSummaryForcertaincontrolmeasures,the2008projectedemissionreductionscalculatedinthisdocumentdifferfromthe2008projectedemissionreductionsthatMDEhastakencreditforintheCecilCounty8-hourozoneplan.Thetotal2008projectedemissionreductionscalculatedbyEPAaregreaterthantheemissionreductionsclaimedbyMDEintheCecilCounty8-hourozoneplan.Therefore,theemissionreductionsclaimedintheCecilCounty8-hourozoneplanareapprovable.Table12summarizestheemissionreductionsfromeachcontrolmeasureandcomparesEPA’scalculatedvalueswiththereductionsclaimedintheCecilCounty8-hourozoneplan.Table12.ControlMeasuresand2008EmissionReductionsinCecilCounty—ComparisonofEPACalculationsandCecilCounty8-hourOzonePlanCecilCountyEPACalculation8-hourOzonePlanVOCNOxVOCNOxControlMeasure(tpd)(tpd)(tpd)(tpd)On-roadMobileMeasures1.753.781.753.78Non-roadModel1.180.281.180.28Railroads(Tier2)0.000.200.000.15OTC-ConsumerProductsPhase10.140.000.140.00OTC—ATMCoatings0.390.000.390.00OTC—PortableFuelContainersPhase10.320.000.260.00Total3.784.263.714.2113V.ContingencyMeasuresforFailuretoMeetRFPSection172(c)(9)oftheCAArequiresastatewithamoderateoraboveozonenonattainmentareatoincludesufficientadditionalcontingencymeasuresinitsRFPplanincasetheareafailstomeetRFP.ThesameprovisionoftheCAAalsorequiresthatthecontingencymeasuresmustbefullyadoptedcontrolmeasuresorrules.UponfailuretomeetanRFPmilestonerequirement,thestatemustbeabletoimplementthecontingencymeasureswithoutanyfurtherrulemakingactivities.Uponimplementationofsuchmeasures,additionalemissionreductionsofatleast3percentoftheadjusted2002baselineemissionsmustbeachieved.Formoreinformationoncontingencymeasures,seetheApril16,1992GeneralPreamble(57FR13512)andtheNovember29,2005Phase28-hourozoneimplementationrule(70FR71612).Tomeettherequirementsforcontingencyemissionreductions,EPAallowsstatestouseNOxemissionreductionstosubstituteforVOCemissionreductionsintheircontingencyplans.However,MDEchosetouseonlyVOCreductionstomeetthecontingencymeasurerequirementinCecilCounty.MDEdiscussesitsCecilCountycontingencymeasuresforfailuretomeetRFPinSection10.2oftheCecilCounty8-hourozoneplan.MDEcalculatedthecontingencyVOCreductionforCecilCountyasshowninTable13,below.TheRFPcontingencyrequirementmaybemetbyincludingintheRFPplanademonstrationof18percentVOC&NOxRFP.Theadditional3percentreductionabovethe15percentrequirementmustbeattributedtospecificmeasures.Table13.CecilCounty2008RFPContingencyMeasureTargetLevelCalculationsDescriptionFormulaVOCNOxA2002Rate-OfProgressBaseYearInventory17.5817.40BFMVCP/RVPReductionsBetween2002And20080.692.19C2002AdjustedBaseYearInventoryRelativeTo2008A-B16.8915.21DRFPRatio0.070.08ERFPEmissionsReductionsRequiredBetween2002&2008C*D1.181.22FContingencyPercentage3%0%GContingencyEmissionReductionRequirementsC*F0.510HContingencyMeasureTargetLevelfor2008C—E—G15.2013.99TodetermineifMarylandmeetsthethreepercentcontingencymeasurerequirementforCecilCounty,thetotalprojectedcontrolledemissionsmustbecomparedtothecontingencymeasuretargetlevelscalculatedabove.AsshownbelowinTable14,thetotalVOCandNOxemissionprojectionsmeetthe2008contingencymeasuretargets.Therefore,MDEhasmetthecontingencymeasurerequirementforCecilCounty.Table14.EvaluationoftheCecilCounty2008RFPContingencyMeasureRequirementDescriptionVOCNOx(tpd)(tpd)ATotal2008ProjectedControlledEmissions14.6511.05BContingencyMeasureTargetLevelfor200815.2013.99ContingencymeasurerequirementmetifA<BYesYes14VI.RACMAnalysisandDeterminationPursuanttosection172(c)(1)oftheCAA,statesarerequiredtoimplementallRACMasexpeditiouslyaspracticableforeachnonattainmentarea.Specifically,section172(c)(1)statesthefollowing:“Ingeneral—Suchplanprovisionsshallprovidefortheimplementationofallreasonablyavailablecontrolmeasuresasexpeditiouslyaspracticable(includingsuchreductionsinemissionsfromexistingsourcesintheareaasmaybeobtainedthroughtheadoption,ataminimum,ofreasonablyavailablecontroltechnology)andshallprovideforattainmentofthenationalprimaryambientairqualitystandards.”Furthermore,inEPA’sPhase2Rule,EPAdescribeshowstatesmustincludeaRACManalysiswiththeirattainmentdemonstration(70FR71659).ThepurposeoftheRACManalysisistodeterminewhetherornotreasonablyavailablecontrolmeasuresexistthatwouldadvancetheattainmentdatefornonattainmentareas.ControlmeasuresthatwouldadvancetheattainmentdateareconsideredRACMandmustbeincludedintheSIP.RACMarenecessarytoensurethattheattainmentdateisachieved“asexpeditiousaspracticable.”RACMisdefinedbytheEPAasanypotentialcontrolmeasureforapplicationtopoint,area,on-roadandnon-roademissionsourcecategoriesthatmeetsthefollowingcriteria:•Thecontrolmeasureistechnologicallyfeasible•Thecontrolmeasureiseconomicallyfeasible•Thecontrolmeasuredoesnotcause“substantialwidespreadandlong-termadverseimpacts”•Thecontrolmeasureisnot“absurd,unenforceable,orimpracticable”•Thecontrolmeasurecanadvancetheattainmentdatebyatleastoneyear.MDEaddressestheRACMrequirementinSection7.0andAppendixEoftheCecilCounty8-hourozoneplan.TomeettheRACMrequirement,MarylandmustdemonstratethatithasadoptedallRACMnecessarytomoveCecilCountyandthePhiladelphiaNAAtowardattainmentasexpeditiouslyaspracticableandtomeetallRFPrequirements.AsdemonstratedaboveinsectionIVofthisdocument,MarylandhasmettheRFPrequirementsforCecilCounty.MDEusedtwoindependentlydevelopedlistsofpotentialcontrolmeasuresforitsRACManalysis.ThefirstlistconsistsoftheRACManalysisperformedfortheWashington,DCNAA’s8-hourozoneplan.ThesecondlistofmeasureswasdevelopedbytheBaltimoreMetropolitanCouncil(BMC)withMDEin2006.ThesemeasuresareevaluatedinAppendicesE-1andE-2oftheCecilCounty8-hourozoneplan.MDEusedthefollowingcriteriatodetermineofeachpotentialcontrolmeasure.Note,EPA’sevaluationofcertainMDEcriteriaisshowninthesub-bullets,below.•Isitenforceable?•Isittechnicallyfeasible?•Willitreduceemissionsbythebeginningofthe2008ozoneseason(May1,2008)?oInorderforanymeasuretoadvancetheattainmentdateofJune2010toJune2009,themeasureswouldhavetobeimplementedandachievetheemissionreductionsinthe2008ozoneseason.Therefore,themeasuresmustbeimplementedbyMay2008.•Isiteconomicallyfeasible($3,500-$5,000pertonorless)?15oIntheCecilCounty8-hourozoneplan,MDEstatesthatthiscostpertonrangeisbasedontheReasonablyAvailableControlTechnology(RACT)costsinCecilCounty,whichMDEstatesareaslowas$3,500perton.•Woulditcreatesubstantialorwidespreadadverseimpactswithintheregion?oIntheCecilCounty8-hourozoneplan,MDEstatesthat,“somecandidateRACMmeasureshavethepotentialtocausesubstantialandwidespreadadverseimpactstoaparticularsocialgrouporsectoroftheeconomy.Duetoenvironmentaljusticeconcerns,measuresthatcausesubstantialorwidespreadadverseimpactswillnotbeconsideredRACM.”•Dothesource’semissionsexceedademinimisthreshold,proposedas0.1tpd?oTheApril16,1992GeneralPreamblefortheImplementationofTitleIoftheCleanAirActAmendmentsof1990(57FR13498)statesthatmeasurescanbeexcludedfromfurtherconsiderationinaRACManalysisifthosemeasureshaveinsignificant(deminimis)emissions.“WherethesourcesaffectedbyaparticularmeasurecontributeonlynegligiblytoambientconcentrationsthatexceedtheNAAQS,EPA’spolicyisthatitwouldbeunreasonableandthereforewouldnotconstituteRACMtorequirecontrolsonthesource.”oIntheCecilCounty8-hourozoneplan,MDEstatesthatwhilethesmallestmajorsourcesubjecttoRACTinamoderateNAAemits50tpy,MDEconsidered25tpy(approximately0.1tpd)sources.MDEfurtherstatesthatfollowingtheRACTrequirementsandtheprecedentsetbytheSanFranciscoRACManalysis,itwillnotconsidercontrolmeasuresaffectingsourcecategoriesthatproducelessthat0.1tpdNOxorVOCemissions.Marylandevaluatedover200potentialcontrolmeasuresagainstthesecriteria.NomeasureswerefoundtobeRACM.However,MDEstatesintheCecilCounty8-hourozoneplanthatmanyofthemeasuresareworthwhileinthattheycanreduceemissions.MDEfurtherstatesthatitwillconsiderthesepotentialcontrolmeasuresforfutureSIPrevisionsforCecilCounty.EPAhasreviewedMDE’sanalysis.MDEevaluatedallsourcecategoriesthatcouldcontributemeaningfulemissionreductions,andcompiledanextensivelistofpotentialcontrolmeasures.MDEconsideredthetimeneededtodevelopandadoptregulationsandthetimeitwouldtaketoseethebenefitfromthesemeasures.EPAconcurswithMDE’sconclusionthattherearenoRACMthatwouldhaveadvancedthe2010attainmentdateforCecilCountyandthePhiladelphiaNAA.VII.TransportationConformityBudgetsTransportationconformityisrequiredbyCAAsection176(c).EPA’sconformityrulerequiresthattransportationplans,programsandprojectsconformtostateairqualityimplementationplansandestablishesthecriteriaandprocedurefordeterminingwhetherornottheydo.ConformitytoaSIPmeansthattransportationactivitieswillnotproducenewairqualityviolations,worsenexistingviolations,ordelaytimelyattainmentofthenationalambientairqualitystandards.ThecriteriabywhichwedeterminewhetheraSIP’sMVEBsareadequateforconformitypurposesareoutlinedin40CFR93.118(e)(4).TheprocessfordeterminingtheadequacyofsubmittedSIPbudgetsisdescribedin40CFR93.118(f).16StatesmustestablishVOCandNOxMVEBsforeachofthemilestoneyearsuptotheattainmentyearandsubmitthemobilebudgetstoEPAforapproval.UponadequacydeterminationorapprovalbyEPA,statesmustconducttransportationconformityanalysisfortheirTransportationImprovementPrograms(TIPs)andlongrangetransportationplanstoensurehighwayvehicleemissionswillnotexceedrelevantMVEBs.Failureofdemonstratingsuchtransportationconformitylapsesresultinginfreezingoffederalhighwayfundsandallfederalhighwayprojectsinthelapsedarea.MDEdiscussestransportationconformityinSection8.0oftheCecilCounty8-hourozoneplan.MDE,inconsultationwiththeBaltimoreRegionalTransportationBoard(BRTB),establishedMVEBsfor2008MDEcalculatedthe2008mobileemissionsinventoryusingEPA’sMOBILE6.2andtheHighwayPerformanceMonitoringSystem(HPMS)model.MDEdescribesitsmethodsinAppendixFoftheCecilCounty8-hourozoneplan.MDEalsoestablishedMVEBsfor2009,butEPAisnotevaluatingthatbudgetinthisdocument.TheCecilCountyMVEBforthe2008RFPisbasedontheprojected2008mobilesourceemissionsaccountingforallmobilecontrolmeasures.TheMVEBsforthe2008RFPareshowninTable15,below.Table15.CecilCounty2008RFPMVEBsVOC(tpd)NOx(tpd)2.37.9Forbudgetstobeapprovable,theymustmeet,ataminimum,EPA’sadequacycriteria(40CFR93.118(e)(4)).InaMarch27,2009FederalRegisternotice,EPAnotifiedthepublicthatEPAfoundthatthe2008RFPMVEBsintheCecilCounty8-hourozoneplanareadequatefortransportationconformitypurposes.(74FR13433)AsaresultofEPA’sfinding,theStateofMarylandmustusetheMVEBsfromtheJune4,2007CecilCounty8-hourozoneplanforfutureconformitydeterminationsforthe8-hourozonestandard.Inadditiontothebudgetsbeingadequatefortransportationconformitypurposes,asstatedabove,EPARegion3’sAQABfoundtheproceduresMarylandusedtodeveloptheMVEBstobereasonable.Thebudgetsareidenticaltotheprojected2008on-roadmobilesourceemissioninventories.(SeeTable6,“CecilCounty2008ProjectedControlledVOC&NOxEmissions(tpd).”)Becausethe2008RFPMVEBsareadequatefortransportationconformitypurposesandthemethodsMDEusedtodevelopthemarecorrect,the2008RFPbudgetsareapprovable.C.SUMMARYANDRECOMMENDATIONS:IhavereviewedMDE’s2008RFPplan,contingencymeasuresforfailuretomeetRFP,andRACManalysisforCecilCounty,Marylandandfoundthemtobeapprovable.Inaddition,EPARegion3’sAQABdeterminedthatMDEusedacceptabletechniquesandmethodologiestodeveloptheCecilCounty2002baseyearemissionand2008milestoneyearprojectedinventories.Furthermore,EPAhasfoundCecilCounty’s2008RFPMVEBsadequatefor17transportationconformitypurposes.ThereforeIrecommendapprovalofthefollowingSIPelementsinMDE’sJune4,2007CecilCounty8-hourozoneplan:the2002baseyearemissionsinventory,theRFPplanandassociated2008projectedemissioninventories,theRACManalysis,thecontingencymeasuresforfailuretomeet2008RFP,andthe2008MVEBsfortheMarylandportionofthePhiladelphiamoderatenonattainmentarea(i.e.,CecilCounty).Attachments:-“TechnicalSupportDocument(TSD)forCecilCounty,Maryland,locatedinthePhiladelphiaWilmington-AtlanticCity,PA-NJ-DE8HourOzoneStateImplementationPlan(SIP)AttainmentDemonstrationandBaseYearInventory,”preparedbyAliceH.ChowandsignedbyWalterWilkie,AirQualityAnalysisBranchChief,onDecember19,2008(CecilCountyEmissionInventoryTSD).-EPAOfficeofMobileSources,“LocomotiveEmissionStandardsRegulatorySupportDocument,”April1998.-“TechnicalSupportDocument,COMAR26.11.13.07,ControlofVOCEmissionsfromPortableFuelContainers,”MDE,undated.-E.H.Pechan,“ControlMeasureDevelopmentSupportAnalysisfortheOzoneTransportCommissionModelRules,”March31,2001.-AdequacyStatusofthe2008ReasonableFurtherProgressPlanfortheMarylandPortionofthePhiladelphia-Wilmington-AtlanticCity8-HourOzoneNonattainmentAreaMotorVehicleEmissionBudgets(74FR13433).18