# UNITED

STATES ENVIRONMENTAL

PROTECTION

AGENCY REGION4 ATLANTA

FEDERAL

CENTER 61 FORSYTH

STREET ATLANTA

, GEORGIA 30303-8960 

# Mr. Scan Altcri Director Kentucky

Division

for Air Quality Department

of Environmental

Protection 200

Fair Oaks

Lane.

1 **~~** 

# Floor Frankfort.

Kentucky

4060

I Dear

Mr. Altcri

:



# OCT

2 8



# 2015 Thank

you

for submitting

the Annual Ambient

Air Monitoring

Network

Plan (Network

Plan)

for

the Commonwealth

of Kentucky

dated

July

I. 2015.

The Network

Plan covers Kentuckis

ambient

air monitoring

network

which

is comprised

of assets

and resources

managed

by the Kentucky

Division

for Air Quality (KDAQ)

and

the Louisville

Metro

Air Pollution

Control

District (LMAPCD).

The Network Plan

is required

by

40 Code

of Federal Regulations

(CFR) §58.10. The

U.S. Environmental

Protection

Agency

(EPA)

Region

4 understands

that KDAQ provided

a 30-day public comment

period

during

which

no comments

were received.

An additional

public inspection period

is not required. With

this letter.

the EPA Region

4

is approving

the Commonwealth

of Kentucky's

Network

Plan provided

the following

changes

are made: • 24-hour particulate

matter

less

than

10 microns

(PMw) samples

should

be taken

from midnight

to midnight

local standard

time • The monitor

type

of the Baskett

OJ (AQS

ID: 21-101-0014)

site should

be changed

from

a special purpose

monitor

(SPM)

to

a state

and local

air monitoring

station (SLAMS) • Submission

of addendum/monitoring

siting criteria

for

a lead

(Ph)

site near

AK Steel • Siting

for

the Ashland

Primary

site (AQS

10

: 21-0 19-00

17) needs

to

be resolved We have enclosed comments

on your Network

Plan

. Thank

you

for working

with

us

to monitor

air pollution

and promote

healthy

air quality

in Kentucky.

Please

let

us know

of any problems

in meeting any

of the requirements

we have identified.

If you have

any questions

or concerns,

please contact

Gregg Worley

at (404) 562-9141

or Katie Walther

at (404) 562-9110. Enclosure cc

:

Mr. Keith Talley

incerely. 

# 9\f:$;

**~** ever

H. Banister Director Air, Pesticides

and Toxics Management

Division Director, Louisville

Metro

Air Pollution

Control

District Internet Address

(URL)

• http

: //www.epa.gov Recycled/Recyclable

• Printed

with Vegetable

Oil Based

Inks

on Recycled

Pape

r (M

i n

i m

u m

3 0%

P

o stconsumer)CY2015CommonwealthofKentuckyAmbientAirMonitoringNetworkPlanU.S.EPARegion4CommentsandRecommendationsThisdocumentcontainsU.S.EPARegion4commentsandrecommendationsontheCommonwealthofKentucky's2015AmbientAirMonitoringNetworkPlan(NetworkPlan).Ambientairmonitoringrules,whichincluderegulatoryrequirementsthataddressnetworkplans,datacertification,andminimummonitoringrequirements,amongotherrequirements,arefoundin40CFRPart58.Minimummonitoringrequirementsforcriteriapollutantsarelistedin40CFRPart58,AppendixD.Minimummonitoringrequirementsarelistedforozone(OJ),particulatematterlessthan2.5microns(PM2.s),particulatematterlessthan10microns(PMw),nitrogendioxide(N02),sulfurdioxide(S02),carbonmonoxide(CO),andlead(Pb).Theminimummonitoringrequirementsarebasedoncorebasedstatisticalarea(CBSA)boundariesasdefinedbytheU.S.OfficeofManagementandBudget(OMB),July1,2014,populationestimatesfromtheU.S.CensusBureau,andhistoricalambientairmonitoringdata.MinimummonitoringrequirementsforOJ,PM2.s.andPMtoonlyapplytometropolitanstatisticalareas(MSAs),whichareasubsetofCBSAs.OMBcurrentlydefines25CBSAsintheCommonwealthofKentucky.TheseCBSAsandtherespectiveJuly1,2014,populationestimatesfromtheU.S.CensusBureauareshowninTable1.Table1:CoreBasedStatisticalAreasandJuly1,2014PopulationEstimatesCBSANameCBSATypePopulationCincinnati,OH-KY-INMetropolitanStatisticalArea2,149,449Louisville/JeffersonCounty,KY-INMetropolitanStatisticalArea1,269,702Lexington-Fayette,KYMetropolitanStatisticalArea494,189Huntington-Ashland,WV-KY-OHMetropolitanStatisticalArea363,325Evansville,IN-KYMetropolitanStatisticalArea315,162Clarksville,TN-KYMetropolitanStatisticalArea278,353BowlingGreen,KYMetropolitanStatisticalArea165,732Elizabethtown-FortKnox,KYMetropolitanStatisticalArea151,585London,KYMicropolitanStatisticalArea127,316Owensboro,KYMetropolitanStatisticalArea116,506Richmond-Berea,KYMicropolitanStatisticalArea104,166Paducah,KY-ILMicropolitanStatisticalArea97,820Frankfort,KYMicropolitanStatisticalArea71,768Somerset,KYMicropolitanStatisticalArea63,825Danville,KYMicropolitanStatisticalArea54,151Glasgow,KYMicropolitanStatisticalArea53,138Madisonville,KYMicropolitanStatisticalArea46,376MountSterling,KYMicropolitanStatisticalArea45,967Bardstown,KYMicropolitanStatisticalArea44,812Murray,KYMicropolitanStatisticalArea38,282Mayfield,KYMicropolitanStatisticalArea37,618UnionCity,TN-KYMicropolitanStatisticalArea37,206Middlesborough,KYMicropolitanStatisticalArea27,778Campbellsville,KYMicropolitanStatisticalArea25,257Maysville,KYMicropolitanStatisticalArea17,166MonitoringNetworkChangesKentuckyDivisionforAirQuality(KDAQ)hasrequestedtodiscontinuethemeteorologicalstationattheShepherdsvilleairmonitoringstation(AQSID:21-029-0006)andestablishameteorologicalstationattheBucknerairmonitoringstation(AQSID:21-185-0004),whichisdownwindoftheLouisvillemetropolitanarea.TheEPA'sapprovalisnotrequiredforchangestothesemeteorologicalstations,butweacknowledgethesechanges.LouisvilleMetroAirPollutionControlDistrict(LMAPCD)hasrequestedtomakethefollowingchanges:toreplacethePM2.scontinuousTEOMatBatesElementary(AQSID:21-111-0027)withanon-FEMcontinuousPM2.sBAMforreportingoftheAQI;toreplacetheprimaryPMtoTEOMatSouthwickCommunityCenter(AQSID:21-111-0043)withacontinuousFEMPMtoBAMandtodiscontinueoperationofthecollocatedcontinuousPMtoTEOM,whichisnotneededfornetworkcompleteness;andtoreplacethecontinuousPMtoTEOMatWatsonLane(AQSID:21-111-0051)withacontinuousFEMPM10BAM.TheEPAapprovesthesechanges.OperatingSchedules40CFR§58.12ThemonitoringnetworkproposedintheNetworkPlanmeetstherequiredoperatingschedulesforallcontinuousanalyzersandallmanualPb,PMto,PM2.s,andPM2.sSpeciationTrendsNetwork(STN)monitors.KDAQhasnotproposedanychangestotheiroperatingschedulesintheNetworkPlanwiththeexceptionofpotentiallyalteringthesamplecollectionfor24-hourPMtosamplesasdiscussedbelow.Inthe2015KentuckyAmbientAirMonitoringFive-YearNetworkAssessment(NetworkAssessment),KDAQnotesthat24-hourPMtosamplesarecollectedbetweenmidnight-midnightlocaltime,inobservanceofDaylightSavings.KDAQpointsoutthatthereisacontradictionintheCFRregardingtheuseoflocaltimeversuslocalstandardtime.40CFR50,AppendixKdefinesa"DailyValueforPM10"as"the24-houraverageconcentrationofPMtocalculatedormeasuredfrommidnighttomidnight(localtime)."Meanwhile,40CFR58.12statesthat"a24-hoursamplemustbetakenfrommidnighttomidnight(localstandardtime)inordertoensurenationalconsistency."KDAQisconsideringchangingitsoperatingproceduressothatsamplesarecollectedonlocalstandardbutwilldiscusspotentialimplicationswiththeEPARegion4.TheEPARegion4hasreachedouttotheEPA'sOfficeofAirQualityPlanningandStandards(OAQPS)andreceivedclarificationregardingthematter(seehttps://www.federalregister.gov/articles/2007/06/12/07-2201/ambient-air-monitoring-regulationscorrecting-and-other-amendments#p-77).WeagreeKDAQshouldchangeitsoperatingproceduressothatsamplesarecollectedonlocalstandardtime.AirQualityIndex(AQI)Reporting40CFR§58.50AQIreportingisrequiredinMSAswithpopulationsover350,000asofthelastofficialU.S.census.KDAQisrequiredtoreportanAQIforfourMSAs:Cincinnati,Louisville/JeffersonCounty,LexingtonFayette,andHuntington-Ashland.KDAQmeetsthisrequirement.NationalCore(NCore)MonitoringNetwork40CFRPart58,AppendixD,3.0TheNCoresiteatCannonsLane(AQSID:21·111-0067)isoperatedbyLMAPCD.TheEPA'sOAQPSapprovedthesiteonOctober30,2009.The2015NetworkPlanmeetstheminimummonitoringrequirementsfortheNCoresite.OJMonitoringRequirements40CFRPart58,AppendixD,TableD-2Thenetworkdescribedinthe2015NetworkPlanmeetstheminimum03monitoringrequirementsspecifiedby40CFRPart58,AppendixD,TableD-2inallareasexcepttheEvansville,IN-KYMSA.TheEvansvilleareameetstheminimumnumberofrequiredmonitors,asfiveSLAMS03sitesarecurrentlyoperatedbytheStateofIndiana.KDAQoperatesoneOJsiteintheMSAattheBaskettFireDepartment(AQSID:21-101-0014).ThismonitorisanSPM,andhasbeenoperatedbyKDAQsince1992.Basedon2012-2014data,theBaskettsitehasthehighestOJdesignvalue(0.074ppm)ofanymonitorintheEvansvillearea.Section4.1ofAppendixDrequiresthat"Withinan03network,atleastoneOJsiteforeachMSA,orCSAifmultipleMSAsareinvolved,mustbedesignedtorecordthemaximumconcentrationforthatparticularmetropolitanarea."Inordertomeetthisrequirement,KDAQisrequiredtochangethemonitortypeoftheBaskettOJsitetoaSLAMS,anddesignatethemonitoringobjectiveashighestconcentration.AlsoinreferencetotheaboverequirementinSection4.1ofAppendixD,intheNetworkAssessment,KDAQincludedthemaximumconcentrationozonesiteforeachMSAasdesignatedinAQS.KDAQnotedthatthreeMSAsdidnothaveamaximumconcentrationozonesiteidentifiedinAQS:Elizabethtown-FortKnox,KY;Huntington-Ashland,WV-KY-OH;andBowlingGreen,KY.KDAQhasidentifiedpotentialmaximumconcentrationsitesforeachoftheseMSAsandhasstatedthattheywilldiscussthesechangeswithotherinvolvedagencies(OhioandWestVirginiafortheHuntington-AshlandMSAandtheNationalParksServicefortheBowlingGreenMSA)priortomakinganychangesinAQS.However,thetableonpage7intheNetworkAssessmentandAQSindicatethattheEdSpearParksite(AQSID:21-227-0009)isthemaximumconcentrationsitefortheBowlingGreenMSA.TheClarksville,TN-KYMSAseemstobemissingamaximumconcentrationsitethoughbasedontheNetworkAssessmentandtheNetworkPlan.AQSindicatesthattheCadizCASTNETsite(AQSID:21-221-9991)isthehighestconcentrationsiteinthisMSA,whichisanEPAmonitor.Additionally,theLexingtonPrimarysite(AQSID:21-067-0012)islistedintheNetworkAssessmentasthemaximumconcentrationsitefortheLexington-FayetteMSA;however,thisisnotindicatedintheNetworkPlanorinAQS.TheEPArecommendsKDAQupdatetheirmonitoringobjectivesforallozonesitestoincludeamaximumconcentrationmonitoringobjectivewhereappropriate.AnymaximumconcentrationsitesshouldbedesignatedasSLAMSmonitortypes.TheEPAalsorecommendsKDAQaddadiscussionabouttheCASTNETmonitorasitwasnotreflectedintheNetworkPlan.Thesechangesshouldbereflectedinthe2016NetworkPlan.TheEPAalsonotesthatKDAQidentifiestheHopkinsvilleOJsiteinClarksville(AQSID:21-047-0006)asaSLAMSmonitortype,howeverthemonitortypeislistedasOtherinAQS.PleasechangethismonitortypetoaSLAMSinAQS.COMonitoringRequirements40CFRPart58,AppendixD,4.2AmbientairmonitoringnetworkdesigncriteriaforCOarefoundinSection4.2ofAppendixDto40CFRPart58.CBSAswithapopulationoveronemillionarerequiredtooperateoneCOmonitorcollocatedwithanear-roadN02monitorbyJanuary1,2017asindicatedin40CFR§58.13(e)(2).ThisrequirementisalreadybeingmetfortheCincinnatiCBSAthroughaMemorandumofAgreement(MOA)withOhio.Thenear-roadsiteislocatedinOhioandisoperatedbytheSouthwestOhioAirQualityAgency(AQSID:39-061-0048).ThisrequirementisalsoalreadybeingmetfortheLouisville/Jefferson County CBSA by the CO monitor currently operating at the Durrett Lane near-road

site (AQS ID : 21-111-0075).

NOz Monitoring Requirements

40 CFR Part 58, Appendix D, 4.3

Ambient air monitoring network design criteria for N02 are found in Section 4.3 of Appendix D to 40

CFR Part 58. Three types of NOz monitoring are r equired: near-road, area - wide, and Regional

Administrator. These types of NOz monitoring are described in Sections 4.3.2, 4.3.3, and 4.3.4,

respectively. Ambient air monitoring design criteria for near-road NOz monitoring sites are found in Section 4 . 3.2 of

Appendix D to 40 CFR Part 58 . A near-road N02 monitor is operated by LMAPCD for the

Louisville/Jefferson County CBSA at the Durrett Lane monitoring site (AQS ID : 21 - 111-0075) and a

near - ro a d NOz monitor is operated by the Southwest Ohio Ai r Quality Agency (AQS ID : 39-061-0048)

for the Cincinnati CBSA. CBSA's with popula t ions between 500,000 and 1,000,000 are currently

required to opera t e a near-road NOz monitoring site starting i n January 1, 2017 . A new NOz monitoring

mle is expected t o be promulgated in 2016 . The new rule may change the requirements for CBSAs of

t his size . Under current regulations , if the Lexington-Fayette MSA reaches a population of 500,000, the

MSA will be req u ired to have a near-road site. The population estimate as of July l , 2014, is 494,189 .

Ambient air mon i toring network design criteria for area-wide N02 sites are found in Section 4 . 3.3 of

Appendix D to 40 CFR Part 58. Any CBSA with a population of 1,000,000 or more persons is required

to monitor a loca ti on of expected highest N02 concentration representing the neighborhood or larger

spatial scale s . The Cannons Lane NO z monitor (AQS ID: 21-111 - 0067) i s used in fulfillment of the

ar e a - wide NOz mon i toring requirement for the Louisville/Jeffer s on County CBSA, and the Northern

Kentucky Univers i ty (NKU) NO z monitor (AQS ID: 21-037 -3002) is used in fulfillment of the areawide NOz monitoring requirement for the Cincinnati CBSA.

Ambient air monitoring network design c riteria for Regional Administrator required N0 2 monitoring,

of t en referred to as RA - 40 m o nitoring, are found in Section 4 . 3.4 of Appendix D to 40 CFR Part 58.

Under these provisions Regional Administrators must require a minimum of forty additional N02

monitoring st ations nationwide, w i th a primary focus on siting these monitors in locations to protect

susceptible and vulnerable populations. Reg i on 4 has previously designated the Lexington Primary NOz

monitor (AQS ID: **21 067**  **0012)** as a RA - 40 NOz monitoring site. The full list of NOz monitors

identified by the Regional Administrators can be found on the EPA's website at

htlp ; //www3.epu.gov/ttnam til /wpop . hi ml.

SOz Monitoring Requirements

40 CFR Part 58, Appendix D, 4 .4

Ambient air monitoring network design criteria for SO z are found in Section 4. 4 of Appendix D to 40

CFR Part 5 8. This section require s that " The popu l ation weighted emissions index (PWEI) s hall be

calculated by states for each core based statistical area (CBSA) . .. " As a result , the S0 2 monitoring

site(s) required in each CBSA will satisfy minimum monitoring requirements if the monitor(s) i s sited

w i thin the boundaries of the p arent CBSA and is of the following site type s : population exposure ,

maximum concentration, source · oriented, general background, or regional transport. S02 monitors at

NCore stations may satisfy minim u m monitoring requirements if that monitor is located within a CBSAwithminimallyrequiredmonitorsconsistentwithAppendixD,Section4.4.TheSOzmonitoringnetworkdesignoutlinedintheNetworkPlanmeetstheminimumrequirementsof40CFRPart58.TheNetworkPlandoesnotindicatethattheFirearmsTrainingsite(AQSID:21-111-1041)isaPWEIbasedmonitor;howevertheNetworkAssessmentincludesitinthetableofPWEIbasedmonitors(pg.74).TheNetworkPlanindicatesthatitisanEpisodemonitor.Additionally,theCannonsLanesite(AQSID:21-111-0067)isindicatedintheNetworkPlanasbeingaPWEIbasedmonitor;however,itisnotincludedintheNetworkAssessmenttable(pg.74)asaPWEImonitorintheLouisville/JeffersonCountyMSA.KDAQshouldensurethatconsistentlanguageisusedwhendesignatingwhichSOzmonitorsarePWEIbasedmonitors.Pleaseupdatethe2016NetworkPlanwiththeappropriatePWEImonitordesignations.TheEPAfmalizedtheSOzDataRequirementsRule(ORR)onAugust10,2015.ThisrulewillrequirecharacterizationoftheairqualitynearsourceswithSOzemissionsgreaterthan2,000tonsperyearbyconductingambientairmonitoringormodeling.Weencourageyouragencytobegin havingconversationswithaffectedsourcesintheCommonwealthofKentuckytodetermineanagreeduponapproachformeetingtheDRRrequirements.ByJanuary15,2016,KDAQmustsubmitafinallistofsourcestotheEPARegion4identifyingthesourcesintheCommonwealtharoundwhichS02airqualitymustbecharacterized.ForsourcesthatKDAQdecidestoevaluateusingambientairmonitoring,newsiteproposalsmustbeincludedinthe2016NetworkPlan.ThelocationofthesemonitoringsitesshouldbeselectedusingtheprocessoutlinedintheSOzNAAQSDesignationsSource-OrientedMonitoringTechnicalAssistanceDocument1•PbMonitoringRequirements40CFRPart58,AppendixD,4.5ThemonitoringrequirementsforPbarefoundin40CFRPart58,AppendixD,Section4.5.Theemissionsthresholdforfacilitiesnearwhichsource-orientedPbmonitoringisrequiredis0.5tonsperyear(tpy).PbmonitoringisalsorequiredaturbanNCoresites.MonitoringisongoingasrequiredneartheEnersysInc.facilityinMadisonCounty.BasedontheNetworkAssessment,PbmonitoringisrequiredtobeestablishedneartheAKSteelWestWorksfacilityinBoydCounty.AssoonasKentuckyidentifiesacandidatesite,theproposedrevisionstothenetworkmustbesubmittedtotheEPAforapproval.Oncethedetailsofthesiteproposalarefinalized,theCommonwealthwillneedtosubmitanaddendumtotheNetworkPlan.Theaddendummustincludealloftherequiredinformationforproposedsitesunder40CFR§58.10(b).TheaddendumshouldalsoincludeKDAQ'srationaleforthelocationofthenew proposedsite,andsupportinginformationabouthowthesitelocationwasselectedsuchassitephotos,maps,windroses,etc.DuringMarch2012,KDAQstartedcollectingdatafromatemporaryspecialpurposePbmonitoringstationontheEasternKentuckyUniversity(EKU)propertyinRichmondtocomparewithdatafromtheMayfieldElementarySchoolPbmonitor(AQSID:21-151-0003).ModelinghadindicatedthatthetemporarymonitorontheEKUpropertyislocatedintheareaofmodeledmaximumambientconcentrationfortheEnersysfacility,whiletheMayfieldElementarySchoolmonitorisnot.DatafromtheEKUPbmonitoringsite(AQSID:21-151-0005)hasindicatedPblevelsaresignificantlyhigherthanattheMayfieldSchoolmonitoringsite.KDAQintendstoestablishapermanentPbmonitoringsiteat1S02NAAQSDesignationsSource-OrientedMonitoringTechnicalAssistanceDocument.U.S.EPAOfficeofAirQualityPlanningandStandardsAirQualityAssessmentDivision,DraftDecember2013.http://www3.epa.gov/airuuality/!>ulfurdio:\idc/pdfs/S02Mnnit(lringTAD.pdfEKU but has delayed the process until Enersys completes improvements of their control system.

Preliminary modeling indicates minimal spatial shift in the area of maximum deposition . The permanent

site at EKU will include collocated high volume Pb samplers and will be designated as a state and local

air monitoring station (SL AM S) monitor site . KDAQ will submit a formal site proposal to the EPA after

logistical factors have been determined for the EKU site. The existing SPM monitor at EKU was

converted to a SLAMS monitor on January l , 2015, and the EPA approves this change. According to the

Network Assessment, KDAQ has installed new fencing at the EKU site and is preparing to build a

second deck for the collocated sampler. KDAQ must submit a site proposal to the EPA for the proposed

changes to the EKU site before additional modifications are made to the site . KD AQ previously

requested permission to discontinue the collocated Pb sampler at Mayfield Elementary School once the

permanent collocated EKU site is established and will continue monitoring with the p ri mary Pb sampler

at the Mayfield Elementary School site. The EPA approved the discontinuation of the collocated Pb

monitor at Mayfield Elementary School after the permanent collocated site is established at EKU.

The Network Assessment includes a renewal of the waiver from the Requirements of 40 CFR 58,

Appendix D: Lead Network Design Criteria in Appendix B of the document. The waiver indicates that

KDAQ identified ten sources with Pb emissions over 0 . 50 tpy in KY-EIS. KDAQ submitted a modeling

demonstration and requested a waiver from monitoring for eight of those sources . The remaining two

sources are the Enersys, Inc. facility which is currently being monitored for Pb emissions and the AK

Steel West Works facility, which KDAQ recommends Pb monitoring be established in the proximity of

maximum ambient air impact. The renewal of these waivers will be discussed in the Network

Assessment response letter.

The waivers should be renewed as part of each five year Network Assessment or upon learning of

process changes at the facility that may increase the Pb emissions or ambient concentrations. In the 2013

Network Plan, KDAQ proposed discontinuation of the Lockwood Pb mon i torin g station and submitted a

formal request to the EPA on September 17,2013, and the EPA Region 4 approved the wa i ver of the

source-oriented monitoring requirement near the Ca l gon Carbon facility. In the 2014 Network Plan,

KDAQ proposed to discontinue the Salem Elementary Pb monitoring stat i on on Decembe r 31, 2014, and

the EPA Region 4 approved a waiver of the source-oriented monitoring requirement near the Superior

Battery facility. Of the two monitoring stations that were shutdown, only the Calgon Carbon facility is

included in the renewal of the waiver since the emissions are listed as 0.68 tpy. The emissions from the

Superior Battery facility are below 0.50 tpy at 0 . 0285 tpy and no monitoring i s currently required.

PM to Monitoring Requirements

40 CFR Part 58, Appendix A, 3.3.1

40 CFR Part 58, Appendix D, Table D-4

The Commonwealth of Kentucky's current PM 10 primary monitoring network does meet the minimum

requirements found in 40 CFR Part 58, Append i x D, Table D-4 for all MSAs.

All PM10 collocation requirements for manual methods found in 40 CFR Part 58, Appendix A, Section

3 . 3 . 1 are currently being met. Fifteen percent of each network of manual PM10 methods (at least one

site) must be collocated. Also, the sites with collocated monitors should be among those measuring

annual mean concentrations in the highest 25 percent of the network. These collocation requirements are

assessed at the primary quality assurance organ i zation level. The PM 10 monitor at 21 s t & G r eenup (AQS

ID : 21-019-0002) in the Huntington-Ashland MSA i s collocated. Additionally, the PM1o monitor at

Grayson Lake (AQS ID: 21-043-0500) i s collocated . Based upon annual mean concentrations , the 21 51

and Greenup site is the highest reading site in the network. This meets the collocation requirement.ThereisadiscrepancybetweentheNetworkPlanandtheNetworkAssessmentforsomeofthemonitors.TheNetworkAssessmentaswellasAQSindicatesthattherearecollocatedPM10monitorsatSouthwickCommunityCenter(AQSID:21-111-0043);however,theNetworkPlanonlyindicatesthatthereisonemonitorpresent.TheNetworkAssessmentindicatesthatthereisaPM10SLAMSmonitorpresentatWatsonLane(AQSID:21-111-0051);howevertheNetworkPlanindicatesthatthismonitorisaspecialpurposemonitor(SPM).Pleaseupdatethe2016NetworkPlantoreflectthattherearecollocatedPM10monitorsatSouthwickandthattheWatsonLanemonitorisaSLAMS.PM2.sMonitoringRequirements40CFRPart58,AppendixA,3.2.540CFRPart58,AppendixD,TableD-5TheCommonwealthofKentucky'scurrentPM2.smonitoringnetworkmeetstheminimumrequirementsfoundin40CFRPart58,AppendixD,TableD-5forallMSAs.ManualPM2.scollocationrequirementsarefoundin40CFRPart58,AppendixA,Section3.2.5.Theseincludetherequirementthatfifteenpercentofeachnetworkofmanualreferenceandequivalentmethods(atleastonesite)mustbecollocated.ThemanualcollocationrequirementsforPM2.sarecurrentlybeingmetintheNetworkPlan.PM2.sNear-RoadMonitoringRequirements40CFRPart58,AppendixD,4.7.1(b)(2)Regulatory requirementsin40CFRPart58,AppendixD,Section4.7.1(b)(2)requirethat"CBSAswithapopulationof1,000,000ormorepersons,atleastonePM2.smonitoristobecollocatedatanear-roadN02station."PM2.snear-roadmonitoringisrequiredintheCincinnatiCBSAandtheLouisville/IeffersonCountyCBSA.ThisrequirementisbeingmetfortheCincinnatiCBSAthroughaMemorandumofAgreement(MOA)withOhio.Thenear-roadsiteislocatedinOhioandisoperatedbytheSouthwestOhioAirQualityAgency(AQSID:39-061-0048).ThisrequirementisbeingmetfortheLouisville/JeffersonCountyCBSAbytheDurrettLaneNear-RoadSite(AQSID:21-111-0075)whichhasaPM2.smonitor.PMl.sContinuousMonitoringRequirements40CFRPart58,AppendixD,4.7.2Regulatory requirementsforcontinuousPM2.smonitoringrequirethat"...State,orwhereappropriate,localagenciesmustoperatecontinuousPM2.sanalyzersequaltoatleastone-half{roundup)theminimumrequiredsiteslistedinTableD-5ofthisappendix.AtleastonerequiredcontinuousanalyzerineachMSAmustbecollocatedwithoneoftherequiredFRMIFEM/ARM[federalreferencemethod/federalequivalentmethod/approvedregionalmethod]monitors,unlessatleastoneoftherequiredFRMIFEM/ARMmonitorsisitselfacontinuousFEMorARMmonitorinwhichcasenocollocationrequirementapplies."TheseminimumcontinuousPM2.smonitoringrequirementsarecurrentlymetinallMSAsintheCommonwealth.Also,thecontinuousPM2.scollocationrequirementsarecurrentlymetinallMSAs.Therefore,thecontinuousPM2.smonitoringnetworkdescribedintheNetworkPlanmeetsallofthedesigncriteriaof40CFRPart58.PMl.sBackgroundandTransportSites40CFRPart58,AppendixD,4.7.3Forty CFR Part 58, Appendix D, Section 4 . 7.3 requires that "Each State shall i nstall and operate at least

one PM2.s site to monitor for regional background and at least one PM 2. s site to monitor for regional

transport. " The Network Plan identifies the Grayson Lake PM2.s site (AQS ID: 21-043-0500) as a

background site and the Hopkinsville PM2 . s site (AQS ID : 21-047-0006) as a regional transport s i te.

Therefore , KDAQ has satisfied the requirements of 40 CFR Part 58 for background and transport si t es .

PM2.s Chemical Speciation Network (CSN)

40 CFR Part 58, Appendix D, 4.7.4

The EPA conducted an assessment of the CSN in an effort to opt i mize the network and create a network

that is sustainable going forward. As a result of this assessment, the EPA defunded a number of

monitoring sites, eliminating the CSN PM2.s mass measurement, reducing the frequency of carbon

blanks, reducing sample frequency at some monitoring sites, and reducing the number of i cepacks in

shipment during the cooler months of the year. As KDAQ discussed in the 2014 Network Plan, a

preliminary list of low-value PM2 . s speciation sites to be defunded by t he EPA i ncluded all three of

KDAQ's speciation sites: Grayson Lake (AQS ID: 21-043-0500), Ashland Primary (AQS ID : 21-019-

0017) , and Lexington Primary (AQS ID : 21-067-0012). According to the Network Assessment , KDAQ

discontinued PM2.s speciation sampling in December 2014 after being notified of the loss of federal

funding . PM2 . s speciation monitoring is still taking place at the Cannons Lane NCore site (AQS ID: 21-

111 - 0067) in the Louisville/Jefferson County CBSA.

Photochemical Assessment Monitoring Stations (PAMS)

40 CFR Part 58, Appendix D, 5.0

With the recent pas s age of a new ozone NAAQS on October 1, 2015, the EPA finalized changes to

PAMS. By June 1, 2019, the NCore site in Loui s ville/Jefferson County will be required to imp l ement

P AMS monitoring . While the EPA rea l izes there are seve r al implementation challenge s to work

through, we will work closely with KDAQ and L MAPCD to minimize the burden of implement i ng this

new monitoring program. At this time, however, the P AMS requirement is being met in the

Commonwealth of Kentucky.

Memoranda of Agreement (MOA) with Neighboring States

Kentucky, Ohio , and Indiana have an MOA addressing PM2 . s. PM w , OJ, N0 2 , CO, and S02 monito ri ng

in the Cincinnati, OH-KY-IN MSA. Kentucky and Indiana have an MOA addressing PM 2 . s, PM to , OJ ,

N02, CO, and S02 monitoring in the Evansville, IN - KY MSA. Kentucky and Tennessee have an MOA

addressing PM2.s and OJ monitoring in the Clark s v ill e, TN-KY MSA. The other two MSAs that contain

neighboring states are the LouisviiJe/Jefferson County, KY - IN MSA a n d the Huntington - Ashland, WV KY-OH MSA. The Network Plan does not contain MOAs for either of these MSAs . If at some time in

the future KDAQ chooses to enter into an MOA with the ne i ghboring s tates in these MSAs, the Network

Plan should be updated to reflect tha t change and should incl u de the signed MOA.

Waivers for Siting Criteria

Appendix A of the Network Assessment contains renewals of sit i ng waivers for the Jackson Pur c h as e

Rural Electric Cooperative Corporation site (AQS ID: 21-145-1024) in the Paducah-Mayfie l d

micropolitan area and the Baskett s ite (AQS 10 : 21-101-0014) i n the Evansville MSA. KDAQ req u ests arenewalofthosesitingcriteriawaiversaspartofthefive-yearNetworkAssessment.DiscussionoftherenewalofthosewaiverswillbeprovidedintheNetworkAssessmentresponseletter.AdditionalCommentsTheNetworkAssessmentindicatesthattheAshlandPrimarysite(AQSID:21-019-0017)intheHuntington-Ashland,WV-KY-OHMSAcontainssitingcriteriaproblems,whichwasalsonotedintherecenttechnical systemsauditfmdings.KDAQwillneedtoeitherremedythesitingconcernsorrelocatethesitetoanearbylocationthatisacceptabletotheEPARegion4.TheEPARegion4willworkwithKDAQtocomeupwithasolutiontothesitingcriteriaproblemsattheAshlandPrimarysite.