STATEOFMARYLANDOFFICEOFTHEGOVERNORRECEIVEDSTATEHOUSE100STATECIRCLE-ANNAPOLIS,MARYLAND21401-1925(410)974-3901IAN102012(TOLLFREE)1-800-811-8336-TTYUSERSCALLVIAMDRELAYEPA.REGIONIIIDecember1,2011()FFICEOFREGIONADMINISTRATORMr.ShawnM.GarvinRegionalAdministratorU.S.EnvironmentalProtectionAgencyRegionIII1650ArchStreet(3RAOO)PhiladelphiaPA19103-2023DearMr.Garvin:ThankyoufortheopportunitytoreviseourrecommendationforMaryland’snonattainmentareasunderthe20088-hourozonestandard.InaccordancewithSection107(d)(1)oftheCleanAirAct,Maryland’sboundaryrecommendationsforattainment,nonattainment,andcontrolregionareasundertherevised8-hourozonestandardareprovidedbelow.Loweringtheozonestandardfrom0.08partspermillion(ppm)to0.075ppmwillrequiresignificantreductionsinbothlocalandregionalozonepollution.Marylandwillcontinuetoadoptlocalcontrolprogramstoreducelocallyformedozone.SincemostofMarylandisalreadyheavilyregulatedduetoexistingozoneandfineparticlerequirements,Marylandwillalsoberelyingheavilyonreductionsintransportedpollutioninordertomeetthismorestringentstandard.Marylandresearchshowsthatmeasured,“incoming”ozoneoftenalreadyexceedsthe0.075ppmstandard.MarylandispleasedthatEPAhasinitiatedeffortstoadoptfederalrulestoreduceozonetransport.WearealsoveryconcernedthattheseeffortsdonotgofarenoughandthatEPAmaynotbesuccessfulinfinalizingthenecessaryregulationstoallowMarylandtocomplywiththeCleanAirActandtoprotectthehealthofourcitizens.Becauseoftheseconcerns,Maryland,likeseveralotherMid-AtlanticandNortheaststates,urgesEPAtoconsiderestablishingaverylargenonattainmentareaforthenewstandardthatwouldincludeatleastthefollowingstates:Delaware,DistrictofColumbia,Kentucky,Indiana,Illinois,Maryland,Michigan,Missouri,NewJersey,NewYork,NorthCarolina,Ohio,Pennsylvania,Tennessee,Virginia,WestVirginiaandWisconsin.ThesestatesarethestatesthatEPAhasidentifiedassignificantlycontributingtoMaryland’sozoneproblem.Thislargenonattainmentareawouldguaranteethatappropriateemissionreductionsfromupwindsourcesareachieved.AdditionalsupportingtechnicalinformationonthelargenonattainmentareaisbeingforwardedtoEPARegionIIIbytheMarylandDepartmentoftheEnvironment.MARTINO’MALLEYGOVERNORMr.ShawnM.GarvinPageTwoTotheextentthatEPAcanguaranteethatozonetransportwillbesufficientlycontrolledthroughfederalrules,Marylandrecommendsthatmostofourexistinghistoricalnonattainmentstructureremainintact.TheexceptionwouldbeforWashington,Kent,andQueenAnne’sCounties.The2008-2010designvalues(DVs)showWashingtonCountyat72ppb(partsperbillion),andKentandQueenAnne’sat75ppb.Baseduponthesemonitoredvalues,Marylandwouldliketochangeourrecommendationsforthesecountiesfrom“nonattainment”to“unclassifiable/attainment.”Table1,whichisenclosedwiththisletter,summarizesthespecificareasthatMarylandisrecommendingasattainment,nonattainment,orsecondarycontrolregionareas.Marylandrecognizesthatthisboundaryrecommendationsubmittalisonlythefirststepintheozonedesignationprocess,andlooksforwardtoworkingwiththeEnvironmentalProtectionAgency(EPA)andMarylandstakeholdersduringthefinalstepsofthedesignationprocess.Ifyouhaveanyquestionsonthissubmission,pleasedonothesitatetocontactRobertSummers,Ph.D.,Secretary,MarylandDepartmentofEnvironmentat410-537-3086orGeorge(Tad)Aburn,DirectoroftheAirandRadiationManagementAdministrationat410-537-3255.erelyGovernorcc:RobertM.Summers,Ph.D.,Secretary,MarylandDepartmentoftheEnvironmentEnclosure:Table1TABLE1Maryland’sRevised8-hourOzoneDesignationRecommendationDesignatedAreaDesignationBaltimoreNonattainmentAreaAnneArundelCountyNonattainmentBaltimoreCityNonattainmentBaltimoreCountyNonattainmentCarrollCountyNonattainmentHarfordCountyNonattainmentHowardCountyNonattainmentWashingtonDC-MD-VANonattainmentAreaCalvertCountyNonattainmentCharlesCountyNonattainmentFrederickCountyNonattainmentMontgomeryCountyNonattainmentPrinceGeorgesCountyNonattainmentPhiladelphia-Wilmington-AtlanticCity(PA-NJ-DE-MD)NonattainmentAreaCecilCountyNonattainmentUnclassUlable(Attainment,)countiesAlleganyCountyAttainmentGarrettCountyAttainmentWashingtonCountyAttainmentSt.Mary’sCountyAttainmentKentCountyAttainmentQueenAnne’sCountyAttainmentCarolineCountyAttainmentTalbotCountyAttainmentDorchesterCountyAttainmentWicomicoCountyAttainmentSomersetCountyAttainmentWorcesterCountyAttainment