Mr.ShawnM.GarvinRegionalAdministratorU.S.EnvironmentalProtectionAgency,RegionIII1650ArchStreet(MailCode:3RAOO)Philadelphia,PA19103-2029DearMr.Garvin:717-787-2814P%ECEIVL.PursuanttoSection107(d)oftheCleanAirAct(CAA),enclosedaretheCommonwealthofPennsylvania’sdesignationrecommendationspertinenttothe1-hourNationalAmbientAirQualityStandard(NAAQS)fornitrogendioxide(NO2)promulgatedbytheU.S.EnvironmentalProtectionAgency(EPA)onJanuary22,2010.Thefinalrule,whichestablishesa1-hourstandardof100partsperbillion,waspublishedintheFederalRegisteronFebruary9,2010(74Fed.Reg.6474).TheCommonwealthofPennsylvaniacurrentlyhas18NO2monitorsoperatingstatewide.Usingthe2007-2009datacurrentlyavailable,noneofthosemonitorsisshowingadesignvaluethatexceedstheNO2NAAQS.TheDepartmentofEnvironmentalProtection(DEP)recommendsthatthefollowingfiveareasbedesignatedasattainment:BerksCounty,CambriaCounty,CentreCounty,ErieCounty,andYorkCounty,basedonthe2007-2009designvalues;noadditionalmonitoringsitesarerequiredinthesecounties.Inaddition,DEPrecommendsthattheremainingareasofPennsylvaniabedesignatedas“unclassifiable/attainment.”PleaserefertotheenclosedTables1and2pertainingtotheNO2NAAQSdesignvalues(expressedinpartsperbillion)andcounty-by-countyrecommendations,respectively.Thesubmittalalsoincludesthedocumentationfortherequisitecertifiedmonitoringdata.WeunderstandthatEPAwillalsoprovidenoticeofanymodiflcations10Pennsyivani&srecommendationsatleast120dayspriortoissuingfinaldesignations.Welookforwardtoworkingwithyouandyourstaffduringthedevelopmentofthefinaldesignationsfortheshort-termNO2NAAQSinthisCommonwealth.RECEIVEDJAN32011Dlv‘soDirector(3APQOPennsylvaniaDepartmentofEnvironmentalProtectionSecretaryRachelCarsonStateOfficeBuildingP.O.Box2063Harrisburg,PA17105-2063December21,2010iJCQ2010PAtt)NInAnEqualOpportunityEmployerwww.dep.state.pa.usPrintedonRecycledPaperMr.ShawnGarvin2December21,2010Thankyouinadvanceforyourfavorableconsiderationofourrecommendations.Shouldyouhavequestionsorneedadditionalinformation,pleasecontactJoyceE.Epps,DirectoroftheBureauofAirQuality,bye-mailatjeepps@state.pa.usorbytelephoneat717-787-9702.Sincerely,Johni-langerSecretaryEnclosuresTable1CommonwealthofPennsylvaniaNO2DesignValuesinpartsperbillion3-YearAveragesofAnnual98thPercentilesCountySiteNameAQSCode2007-2009Allegheny(ACHD)HarrisonTwp42-003-100548Allegheny(ACHD)BAPC42-003-000854BeaverBeaverFalls42-007-001443BerksReadingAirport42-011-001137*BucksBristol42-017-001244CambriaJohnstown42-021-001142CentreStateCollege42-027-010035*DauphinHarrisburg42-043-040145DelawareChester42-045-000251ErieErie42-049-000345LackawannaScranton42-069-200646LancasterLancaster42-071-000740NorthamptonFreemansburg42-095-002542PerryPerryCounty42-099-030122Philadelphia(AMS)Lab42-101-000458Philadelphia(AMS)Broad42-101-004758WashingtonCharleroi42-125-000540YorkYork42-133-000850*incompletedataTable2Pennsylvania’sCounty-by-CountyDesignationRecommendationsforthe1-HourNO2NationalAmbientAirQualityStandardsCurrentN022007-2009RequiredPennsylvaniaDesignValuelocationforRecommendedCounties(ppb)newmonitorDesignationAdamsCountyN/AUnclassifiable/AttainmentAlleghenyCounty51PittsburghMSAUnclassifiable/AttainmentArmstrongCountyN/APittsburghMSAUnclassifiable/AttainmentBeaverCounty43PittsburghMSAUnclassifiable/AttainmentBedfordCountyN!AUnclassifiable/AttainmentBerksCounty37*AttainmentBlairCountyN/AUnclàssifiable/AttainmentBradfordCountyN/AUnclassifiable/AttainmentBucksCounty44PhiladelphiaMSAUnclassifiable/AttainmentButlerCountyN/APittsburghMSAUnclassifiable/AttainmentCambriaCounty42AttainmentCameronCountyf%1/AUnclassifiable/AttainmentCarbonCountyN/AAllentownMSAUnclassifiable/AttainmentCentreCounty35AttainmentChesterCountyN/APhiladelphiaMSAUnclassifiable/AttainmentClarionCountyN/AUnclassifiable/AttainmentClearfieldCountyN/AUnclassifiable/AttainmentClintonCountyN/AUnclassifiable/AttainmentColumbiaCountyN/AUnclassifiable/AttainmentCrawfordCountyN/AUnclassifiable/AttainmentCumberlandCountyN/AHarrisburgMSAUnclassifiable/AttainmentDphinCounty45HarrisburgMSAUnclassifiable/AttainmentDelawareCounty51PhiladelphiaMSAUnclassifiable/AttainmentElkCountyN/AUnclassifiable/AttainmentErieCounty45AttainmentFayetteCountyi”/APittsburghMSAUnclassifiable/AttainmentForestCountyN!AUnclassffiable/AttainmentFranklinCountyNAUnclassifiable/AttainmentFultonCountyN/AUnclassifiable/AttainmentGreeneCountyN/AUnclassifiable/AttainmentHuntingdonCountyN/AUnclassifiable/AttainmentIndianaCountyN,’AUnclassifiable/Attainment1CurrentN022007-2009RequiredPennsylvaniaDesignValuelocationforRecommendedCounties(ppb)newmonitorDesignationJeffersonCountyN/AUnclassifiable/AttainmentJuniataCountyN/AUnclassifiable/AttainmentLackawannaCounty46ScrantonMSAUnclassifiable/AttainmentLancasterCounty40LancasterMSAUnclassifiable/AttainmentLawrenceCountyN/AUnclassifiable/AttainmentLebanonCountyN1AUnclassifiable/AttainmentLehighCountyNAAllentownMSAUnclassifiable/AttainmentLuzerneCountyNAScrantonMSAUnclassifiable/AttainmentLycomingCountyN/AUnclassifiable/AttainmentMcKeanCountyN/AUnclassifiable/AttainmentMercerCountyN,’AUnclassifiable/AttainmentMifflinCountyN/AUnclassifiable/AttainmentMonroeCountyN/AUnclassifiable/AttainmentMontgomeryCountyN/APhiladelphiaMBAUnclassifiable/AttainmentMontourCountyN/AUnclassifiable/AttainmentNorthamptonCounty42AllentownMSAUnclassifiable/AttainmentNorthumberlandCountyN/AUnclassifiable/AttainmentPerryCounty22HarrisburgMSAUnclassifiable/AttainmentPhiladelphiaCounty58PhiladelphiaMSAUnclassifiable/AttainmentPikeCountyN‘AUnclassifiable/AttainmentPotterCountyNAUnclassifiable/AttainmentSchuylkillCountyN/AUnclassifiable/AttainmentSnyderCountyN/AUnclassifiable/AttainmentSomersetCountyN,’AUnclassifiable/AttainmentSullivanCountyN/’AUnclassifiable/AttainmentSusquehannaCountyAUnclassifiable/AttainmentTiogaCountyN/AUnclassifiable/AttainmentUnionCountyN!AUnclassifiable/AttainmentVenangoCountyN/AUnclassifiable/AttainmentWarrenCountyN/AUnclassifiable/AttainmentWashingtonCounty40PittsburghMSAUnclassifiable/AttainmentWayneCountyN/AUnclassifiable/AttainmentWestmorelandCountyN/APittsburghMBAUnclassifiable/AttainmentWyomingCountyN/AScrantonMBAUnclassifiable/AttainmentYorkCounty50Attainment*incompletedata2