324RECEIVEDSTATEOFMARYLANDMARI2D09OFFICEOFTHEGOVERNOREPA.EClONIIIOFF!CEOFREGONALADMINISTRATORMARTINO’MALLEYGOVERNORSTATEHOUSE100STATECIRCLEANNAPOLISMARYLAND21401-1925(410)974-3901(TOLLFREE)1-800-811-8336March10,2009TTYUSERSCALLVIAMDRELAYRECEIVEDMr.WilliamT.WisniewskiActingRegionalAdministratorU.S.EPARegion31650ArchStreet11’1PhiladelphiaPA19103-2029““.DearMr.Wisniewski:AsrequiredbytheCleanAirAct,Marylandisprovidingrecommendationsfornonattainmentareasundertherevised8-hourozonestandard.Loweringtheozonestandardfrom0.08partspermillion(ppm)to0.075ppmwillrequiresignificantreductionsinbothlocalandregionalozonepollution.Marylandwillcontinuetoadoptlocalcontrolprogramstoreducelocallyformedozone.SincemostofMarylandisalreadyheavilyregulatedduetoexistingozoneandfineparticlerequirements,Marylandwillalsorelyheavilyonreductionsintransportedpollutiontomeetthismorestringentstandard.Maryland’sscientificresearch,whichusesairplanes,ozone-measuringballoons,andlasermeasuringtechniques,hasdocumentedthatairtransportedintoMarylandcanoftencarrylevelsofozonealreadyexceedingthestandard.With“incoming”ozonelevelsabovethestandard,strongnationalruleswillbeneededforareaslikeMarylandtoattaintherevisedozonestandard.ManyofthenationalrulesneededarealreadybeingsuccessfullyimplementedinmanyoftheOzoneTransportRegionstates.Strongnationalruleswillhelp“leveltheplayingfield”forareasthatsignificantlycontributetoMaryland’snonattainmentproblem.Marylandrecommendsthattheexistingnonattainmentstructureremainintact,ifEPAisconfidentthatstrongnationalruleswillbeinplacethreeyearsinadvanceofMaryland’sattainmentdate.Pleasenotethismeansthatstrongnationalruleswillbeneededby2011.RetainingexistingnonattainmentareasbenefitsMarylandbyprovidingconsistentStateImplementationPlandevelopmentandtransportationconformityimplementation.Inthealternative,ifEPAisnotconfidentthatstrongnationalruleswillbeinplacethreeyearsinadvanceofMaryland’sattainmentdateundertherevisedstandard,MarylandsupportstheimplementationofalargeregionalnonattainmentareaencompassingasignificantportionoftheU.S.EastCoast.Thislargeregionalnonattainmentareawouldforceregionalcontrolsandreductionsintransportedpollutioninanappropriatetimeframe.Mr.WilliamT.WisniewskiActingRegionalAdministratorMarlandasksthatEPAresondtothisrequestindicatingwhetherEPAplanstoadoptnationalorregionalrulesredieozonetransportinawaythatsupportsMaryland’seffortstoattainthenewstandardontime.Maryland’srecommendationsarebasedonthreeguidingprinciples:1.Accountability-EPAmustcontinuetoholdupwindareasthatcontributetopoorairqualityindownwindareasresponsibleformakingappropriatereductionsinemissions.Marylandneedssignificantreductionsintransportedpollutantstomeetthestandard.2.MaintainingEffectivePlanningProcesses-Existing,effectiveairqualityplanningandtransportationconformityprocesseslikethoseintheBaltimoreandWashingtonareasshouldberecognizedandmaintainedwheneverpossible.MarylandworkswithseveralseparateMetropolitanPlanningOrganizationsindevelopingcleanairandtransportationplans.ThishasworkedverywellforcertainCleanAirActrequirements,liketransportationconformity,whereairqualityandtransportationplanningresponsibilitiesoverlap.3.Consistency-EPAneedstoensurethataconsistentdesignationpolicyisusednationallythattakesintoconsiderationtheexistingozonenonattainmentareas.MarylandisrecommendingthatEPAdesignatethesamenonattainmentareasforMarylandwhencomparingtherevised8-hourozonestandardandtheexisting8-hourozonestandard.Thisallowsforaconsistentplanningprocessandaconsistenttransportationconformityprocess.ThefollowingtablesummarizesthespecificareasthatMarylandisrecommendingasattainment,nonattainment,orsecondarycontrolregionareas:TABLE1Maryland’sRevised8-hourOzoneDesignationRecommendationDesignatedAreaDesignationBaltimoreAreaAnneArundelCountyNonattainmentBaltimoreCityNonattainmentBaltimoreCountyNonattainmentCarrollCountyNonattainmentHarfordCountyNonattainmentHowardCountyNonattainmentMr.WilliamT.WisniewskiActingRegionalAdministratorDesignatedAreaDesignationWashingtonDCAreaCalvertCountyNonattainmentCharlesCountyNonattainmentFrederickCountyNonattainmentMontgomeryCountyNonattainmentPrinceGeorgesCountyNonattainmentHagerstown—WVPanhandleAreaWashingtonCountyNonattainmentPhiladelphia-Wilmington-TrentonAreaCecilCountyNonattainmentUpperEasternShoreAreaKentCountyNonattainmentQueenAnne’sCountyNonattainmentUnclassifiable(Attainment)Counties*AlleganyCountyAttainmentGarrettCountyAttainmentSt.Mary’sCountyAttainmentCarolineCountyAttainmentDorchesterCountyAttainmentTalbotCountyAttainmentWicomicoCountyAttainmentSomersetCountyAttainmentWorcesterCountyAttainment*MarylandwouldsupportthesecountiesdesignatedasnonattainmentifEPAchoosestoimplementlargerregionalnonattainmentareasRegardlessofthedesignation,MarylandcontinuestosupportenforcementofSectionI1O(a)(2)(D)oftheCleanAirActtoensurereductionsintransportandholdupwindnonattainmentareasaccountable.MarylandalsosupporttheuseofCleanAirActSection11O(a)(2)(D)inreviewingandapprovingredesignationandcleandatarequests.Mr.WilliamT.WisniewskiActingRegionalAdministratorMarylandrecognizesthatthisrecommendationisthefirststepintheozonedesignationprocess,andlooksforwardtoworkingwithEPAandMarylandstakeholdersduringthedesignationprocess.Ifyouhaveanyquestionsonthissubmission,pleasecontactShariT.Wilson,Secretary,MarylandDepartmentofEnvironmentat(410)537-3893.Enclosure:Mapof8-HourOzoneDesignValuesfor2007cc:ShariT.Wilson,Secretary,MarylandDepartmentofEnvironment

# Spatial Extent f the 8-Hour Ozone Non-attainment Areas in 2008

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/ModelingDatafor2009DesignValuesforDelawareandMaryland,highlightingtheEasternShore1Table1:Projected8-hrOzoneDesignValuesbasedonZOO9OTWEmissionsInventoryDelaware______________________AIRS-IDMonitor100051002SussexSeaford100051003SussexLewes100010002KentKillensPond100031007NewCastleLumsPond100031013NewCastleBellefonte100031010NewCastleBrandywineMalandAIRS-IDCountyMonitor240430009WashingtonHagerstown240210037FrederickFrederickAirp240130001CarrollSouthCarroll240170010CharlesSMaryland240313001MontgomeryRockville240051007BaltimorePadonia240053001BaltimoreEssex240290002KentMillington240150003CecilFairHill240338003PrinceGeorgesPGCoun.Egues.240259001HarfordAldino240330002PrinceGeorgesGreenbelt240030014AnneArundelDavidsonville240030019AnneArundelFt.Meade240251001HarfordEdgewood•‘X’AFrom“Projected8-hOzoneAirQualityovertheOzoneTransportRegion,”TSD-Ih,BureauofAirQualityAnalysisandResearch,DivisionofAirResources,NewYorkStateDepartmentofEnvironmentalConservation,Albany,NY12233,March26,2007.