UNITEDSTATESENVIRONMENTAL PROTECTIONAGENCYREGION4ATLANTAFEDERALCENTER61FORSYTH STREETATLANTA, GEORGIA30303-8960OCT-82010Mr.John S.LyonsDirectorKentuckyDivisionforAirQualityDepartmentofEnvironmentalProtection200FairOaksLane,1'FloorFrankfort, Kentucky40601DearMr.Lyons:Thankyouforsubmittingthe annual ambientairmonitoring network plan (NetworkPlan)forthe CommonwealthofKentuckydated June30,2010.TheNetworkPlancoversKentucky's ambientair monitoringnetwork whichiscomprisedofassetsand resources managedbytheKentuckyDivision forAirQuality(KDAQ)andthe Louisville Metro Air PollutionControlDistrict.TheNetworkPlanisrequired by40CodeofFederal Regulations(CFR)358.10.TheU.S.EnvironmentalProtectionAgency(EPA)understands thatKDAQprovideda30-day publiccomment period. Comments received andKDAQ'sresponsesare included withthe Network Plan.P"11-.BaseduponourreviewoftheNetworkPlan, EPA Region4has determined that thedocumentssatisfytheapplicablerequirementsof40CFRPart58.TheNetworkPlanisapproved. Comments and recommendationsare enclosed.Thankyouforyour workwithustomonitorair pollutionand promotehealthy air qualityin Kentucky andthe nation.Ifyouhave any questionsorconcerns, please contact DougNeeleyat(404)562-9097 orKeithGoffat (404) 562-9137.Sincerely,,laa~wendol~nKeyes Fleming't^Regional Administrator1Enclosurecc:Ms.Lauren Anderson, DirectorLouisvilleMetro Air Pollution Control District0Ms.StephanieB.McCarthyKentucky DivisionforAirQualityInternet Address(URL)http://www.epa.govRecycled/Recyclable4PrintedwithVegetableOilBasedInksonRecydedPaper(Minimum30%Postconsumer)FY2010CommonwealthofKentuckyAmbientAirMonitoring NetworkPlanU.S.EPA Region4CommentsandRecommendationsThisdocument containsU.S. EPARegion4 commentsand recommendationsontheCommonwealthofKentucky's 2010 ambientairmonitoringnetwork plan (Network Plan).Ambient airmonitoring rules,whichinclude regulatoryrequirements that addressnetworkplans,data certification, andminimummonitoring requirements,among other requirements,are foundin 40CFRPart 58.Minimum monitoring requirementsfor criteriapollutantsarelistedin 40CFRPart 58,AppendixD.Minimum monitoring requirementsdonotexist forcarbon monoxide(CO) unlessrequiredby theestablishmentofaNationalCore(NCore)multipollutant monitoringstation,and/orastateimplementationplan. However,newnationalambient air qualitystandards(NAAQS)were promulgated thisyearfornitrogendioxide(NO2)andsulfur dioxide (SO2)withminimum monitoring requirementseffective January1,2013. Minimum monitoringrequirementsarelistedforozone(03),particulatematter less than 2.5 microns(PM2.5),particulate matterlessthan10microns(PMlo),and lead (Pb).Theminimum monitoring requirementsarebasedonmetropolitanstatisticalarea (MSA)boundariesdefinedbytheU.S.OfficeofManagement and Budget (OMB), July1,2009,populationestimates fromtheU.S.CensusBureau,andhistoricalambientairmonitoring data.OMBcurrently defines nineMSAsinthe CommonwealthofKentucky. TheseMSAsandthe(1respectiveJuly1,2009,populationestimatesfrom theU.S.Census BureauareshowninTable1.Table1:MetropolitanStatisticalAreasand PopulationsMSA NamePopulationCincinnati-Middletown, OH-KY-IN2,171,896Louisville/JeffersonCounty,KY-IN1,258,577Lexington-Fayette,KY470,849Evansville. IN-KY351.911Huntington-Ashland, WV-KY-OH285,624Clarksville,TN-KY268,546Bowling Green,KY120,595Owensboro,KY1 13,636Elizabethtown,KY113,433MinimumOzone MonitoringRequirements40CFRPart58,AppendixD,TableD-2Thenetwork describedinthe 2010NetworkPlan meets theminimumO3monitoringrequirementsspecifiedby40CFRPart 58, Appendix D,TableD-2forallMSAs.0MinimumPMloMonitoringRequirements40CFRPart58, AppendixA3.3.140CFRPart58,AppendixD,TableD-4TheCommonwealthofKentucky's currentPMloprimary monitoring networkmeetstheminimumrequirements foundin40CFRPart 58, Appendix D,TableD-4for allMSAs.Also,allPMlocollocationrequirementsformanualmethods foundin40CFRPart 58,Appendix A3.3.1 arecurrentlybeing met.FifteenpercentofeachnetworkofmanualPMlomethods(at leastone site)mustbecollocated.Also, thesites with collocated monitorsshould beamongthosemeasuring annual meanconcentrationsinthe highest25percentofthenetwork. Thesecollocation requirementsareassessedatthe primaryqualityassuranceorganizationlevel.MinimumPM25Monitoring Requirements40CFRPart 58, AppendixA3.2.540CFRPart58,AppendixD,TableD-5TheCommonwealthofKentucky's currentPM2.5monitoring network meetstheminimum requirements foundin40CFR Part58, AppendixD,TableD-5forallMSAs.Also,allmanualPM2.5collocationrequirements are currentlybeingmet.Therefore,themanualPM2.5monitoring network describedin the2010NetworkPlanmeetsallofthedesigncriteriaof40CFRPart58.PMzJContinuous Monitoring Requirements(340CFRPart58,AppendixD4.7.2Regulatory requirementsforcontinuousPM2.5monitoringrequirethat"...State,orwhereappropriate, local agencies must operate continuousPM2.5analyzersequaltoatleastone-half(roundup)theminimum requiredsiteslistedinTableD-5ofthis appendix.Atleast onerequired continuous analyzerineachMSA must becollocatedwithoneoftherequired FederalReference Method(FRM)/FederalEquivalentMethod(FEM)/ApprovedRegionalMethod(ARM) monitors, unlessat least oneofthe requiredFRM/FEM/ARMmonitors isitselfacontinuousFEMorARM monitorin whichcasenocollocationrequirementapplies."Theseminimum continuousPM2.5monitoring requirements arecurrentlymet inallMSAs intheCommonwealth. Also,thecontinuousPM2.5collocation requirementsarecurrentlymetinallMSAs.Therefore,the continuousPM2.5monitoring network describedintheNetworkPlanmeets allofthe design criteriaof40CFRPart58.PMzsBackground andTransportSites40CFRPart58,AppendixD 4.7.340CFR Part 58, AppendixD,4.7.3requires that"EachStateshall installandoperateatleastonePM2.5sitetomonitor forregionalbackground andatleastonePM2.5siteto monitorforregionaltransport."TheNetworkPlan identifiestheGraysonLakePM2.5site(Air QualitySystem (AQS)ID:21-043-0500)asa backgroundsiteandtheHopkinsvillePM2.5site(AQSID:'021-047-0006)asa transport site. Therefore,KDAQhas satisfiedtherequirementsof40CFRPart 58 forbackgroundandtransport sites.c?Lead Monitoring Requirements40CFRPart58, AppendixD4.5Ambient air monitoring networkdesign criteria for Pbare foundin section4.5 ofAppendix Dto 40CFRPart58.This section requiresthat,ata minimum, there mustbe onesource-orientedstateandlocalairmonitoringstation(SLAMS) locatedtomeasurethemaximumPb concentrationin ambient air resulting from eachPbsourcewhichemits1.0ormoretonsperyear(tho.OnJune30,2009,KDAQsubmittedits 2009NetworkPlan alongwith arequestthatsource-orientedPbmonitoring requirementsbewaived for four sources: AmericanElectricPower(Louisa),NewPageWickliffeMill(Wickliffe),Tennessee Valley Authority (Paducah),andNorthAmericanStainless(Ghent).Therequestwas basedon dataindicating thatthesourceswill notcontributeto a maximumPbconcentrationintheambientairinexcessof50percentoftheNAAQS.OnAugust20,2009,EPArespondedbygrantingthe waivers.Inaddition,onSeptember18,2009,EPA granteda waiver totheLouisville Metro AirPollutionControlDistrictofthe source-oriented ambient air monitoring requirementsfor LouisvilleGasandElectric's MillCreek Station. Allfiveofthese waivers mustberenewedevery5 yearsaspart ofthe network assessment required under40CFR§58.10(d).Inits August20,2009,responsetoKDAQ, EPAalsoindicated that Pbmonitoringisrequiredforthree sources:Calgon Carbon(Catlettsburg), Enersys (Richmond), andSuperiorBattery(Russell Springs).Subsequently, KDAQ installedand nowoperates a Pbmonitornear(3theCalgonCarbon facilityatitsLockwoodmonitoringstation(AQSID:21-019-0016).ItalsoinstalledandnowoperatestwoPb monitorsneartheEnersysfacility, oneofwhich is collocatedatKDAQ'sexistingPM23site at theMayfieldSchool(AQSID:21-151-0003). NeartheSuperiorBatteryfacility at SalemElementarySchool,KDAQrecently installedand beganoperatinga Pb monitor(AQSIDis 21-207-0001at37.069444"N,-84.989250OW).Overthe lastyear, EPARegion 4 conducted areviewofall SLAMS Pb monitoring sitesinthe Region.Basedonairmodeling conductedby KDAQ,itappears thatthe sites near theCalgon CarbonandEnersys facilitiesmaynot be sitedto measurethemaximumPbconcentrationinambientairtaking into account logisticsandthe potentialforpopulationexposure asrequiredby40CFRPart58,AppendixD,4.5(a).Therefore,weare deferring theapprovalofthesesites.Asdiscussed with KDAQairmonitoring staff,EPA encouragesKDAQtositemonitorsinthemodeledmaximum concentration areasnearthesourcesassoonaspractical.Wearewilling to provideyouassistanceinsitingthePbmonitors.Regarding thePbmonitoringsiteatSalemElementarySchool,EPARegion4approves thissite.Air Quality Index (AQI) Reporting40CFR858.50AQIreportingisrequiredin MSAswith populationsover350,000asofthe last officialU.S.census.There arethreeMSAs intheCommonwealthofKentucky required to reportan0AQI:Cincinnati-Middletown,Louisville/JeffersonCounty,and Lexington-Fayette. KDAQmeetsthe AQI reporting requirements.Monitoring Network ChangesProposedbyKDAQKDAQhas proposed monitoring networkchanges in additiontothosepreviouslyaddressedinthis letter.TheU.S.CensusBureau populationestimate fortheEvansvilleIN-KYMSAincreasedto greaterthan350,000 in2008.Asa result, the minimum numberofrequiredO3monitorsincreased totwo.KDAQonly operates one03monitorinthearea.KDAQ andtheIndiana DepartmentofEnvironmental Management's(IDEM)OfficeofAirQuality(OAQ)established a memorandumofagreement (MOA)inMay2010to collectively operatemonitorsintheMSA.As a result,theminimum monitoring requirementsforthe Evansville,IN-KY MSAaremetfor all criteria pollutants, including03.AcopyoftheMOAisincludedin theKDAQNetwork Plan.EPARegion4 approvesKDAQ'suseoftheMOA.On March23,2010,KDAQ wasnotifiedbyNorthern Kentucky UniversitythatHankinsHall andadjacent parkinglotonits Covington Campus werescheduledtobedemolishedthissummer.The Covington airmonitoringstation(AQSID:21-117-0007)waslocatedin theparkinglotandKDAQ was askedto vacate thesitenolaterthan June11,2010. TheCovingtonair monitoringstationwasshutdownonJune1,2010.Toavoid beingdeficientintheminimummonitoring requirementsfor theMSA,anMOA wasestablished duringMay2010betweenKDAQ,theHamilton County(Ohio) DepartmentofEnvironmentalServices,andIDEMOAQ tocollectivelyoperatethe monitors neededto ensurethat minimum monitoring requirementsaremetforall criteriapollutants. A copyoftheMOAis includedin theKDAQNetworkPlan.The CovingtonmonitoringsiteincludedanO3monitor, aPM2.5FRM, acontinuousPM2.5monitor,andaPM2.5speciation sampler.40CFR§58.14(c)allowsthe case-by-caseapprovalofthe discontinuationofmonitorstationsifthediscontinuancedoes not compromisedata collectionneededforimplementationofaNAAQSandiftherequirementsof40CFRPart58,Appendix Dcontinue tobemet. Dueto theredundancyofmonitoring stationsin theCincinnati-Middleton,OH-KY-IN MSA,EPA Region 4 has determined thatthemonitors fromtheCovingtonsite docurrently notneedtoberelocated. Althoughthe03monitorismeasuringaviolation theNAAQS,itisnotthehighest value monitorintheMSAandisnotthedesignvalue monitor.EPARegion4approvesKDAQ'suseoftheMOA to meet monitoring requirements.Alsoenclosedwith the KDAQ NetworkPlanisanMOAestablished during2007betweenKDAQ andtheTennesseeDivisionofAirPollutionControl to ensure that monitoringrequirementsforPM2.5andO3aremet inthe Clarksville,TN-KYMSA.EPA Region4 approvesKDAQ'suseoftheMOA.NationalCore(NCore)MonitoringNetworkTheNCoresiteatCannonsLane(AQSID:21-111-0067)isoperatedbythe LouisvilleMetroAirPollution Control District.EPA'sOfficeofAir Quality PlanningandStandardsapprovedthe site onOctober30,2009.