# LAW OFFICES 

# JORDEN BISCHOFF 

# & HISER,

P.L.C. November

25, 2013 VIA

U.S. MAIL

AND EMAIL 

# Mr.

Eric Massey Division

Director,

Air Quality Division Arizona Department

of Environmental

Quality 111

0 West Washington

Street Phoenix,

Arizona

85007

7272

E. INDIAN SCHOOL



# RoAD,

SUITE



# 360 SUY!T,DA!J',

ARWJNA



# 8S251 TELEPHONE: 

# 480-50)-3900 **Fi\C~!Mll.l':** 

# 480-505-3901 

# ERIC



# L. HISER DIRECfl.!KE: 480-505-3927 e-mail:

ehiscr(a jordcnbi,cho!r.com 

# Re: Application

for Regional

Haze

State Implementation

Plan Revision Apache Generating

Station,

Arizona

Electric

Power Cooperative,

Inc. Dear Director

Massey: Arizona

Electric

Power Cooperative,

Inc. (''AEPCO")

hereby

applies

to the Arizona Department

of Environmental

Quality ("ADEQ'')

for

a revision

to

the State Implementation

Plan ("SIP")

to implement

the proposed

AEPCO

"better

than

best available

retrofit technology

("'BART")'' alternative

that AEPCO submitted

to the

U.S. Environmental

Protection

Agency ("EPA")

as

a result of EPA's disapproval

of ADEQ's

Regional

Haze

SIP

and promulgation

of

a Federal implementation Plan ("FIP")

on AEPCO's

Apache Generating

Station.

See

77 Fed.

Reg. 72512

(Dec.

5, 2012).

The purpose

of this petition

is

to implement

a resolution

to AEPCO's

petition

for administrative reconsideration

as agreed

during

a joint conference

call

of AEPCO,

ADEQ

and

EPA

on June

26, 2013,

and

to resolve

an error

in calculating

the NOx emission

rate

from Steam

Unit

1 ("STl")

and Gas Turbine

1 ("GT1 ")operating

in combined

cycle

mode. Background As you

are aware, AEPCO petitioned

EPA

for administrative reconsideration

of the

FIP

on February 2, 2013. AEPCO submitted

a supplement

to

its petition

for administrative

reconsideration

to EPA setting

forth

a proposed

resolution

that would

achieve

·'better

than BART"

levels

of visibility improvement

more consistent

with ADEQ's calculated

Uniform

Rate

of Progress

on May 29,2013. On June

6, 2013,

EPA granted AEPCO's

request

for administrative reconsideration.

Discussions

then followed

between

AEPCO,

ADEQ

and

EPA representatives

on how

best

to implement

the administrative reconsideration.

ADEQ expressed

a preference

to adopt

the AEPCO

proposal

as part of

a SIP revision,

likely

in the form

of

a permit attachment

that would

then

be submitted

as

a format SIP revision.

This approach

was acceptable

to AEPCO

and EPA.

All parties recognized

that public notice

and comment

will

be required. In addition, AEPCO's engineering

staff,

when reviewing

the emission

rates

for

ST1

and

GTJ

for purposes

of implementing

the regional

haze

SIP, discovered

an overlooked

aspect

of AEPCO's original

BART submittal

that

has resulted

in the SIP's

BART

rate

for Units

STI

and

GTJ

when h!tp:l/azgt/sitcslazgt/plngreg/Managcd

Documents/Generation

Enviromncntall

AIR! AEPCO

SIP

Rev Covcr.docx

November

25,2013Mr.EricMasseyRe:AEPCOApplicationforRegionalHazeSIPRevisionNovember25,2013Page2operatingincombinedcycletobesettoolow.IntheoriginalCH2MI-IiiianalysispreparedonbehalfofAEPCO,CH2MHillexcludedGT1NOxcontributionsfromthecalculatedcombinedcycleemissionrateontheerroneousbeliefthatGTIoperationswerenotpartofthecombinedcycleoperation.Asaresult,the0.056lb/MMBtuNOxBARTrateforpipelinenaturalgasoperationdoesnotincludeanycontributionfiumGTJ.ThiserrorwasnotidentifiedbyAEPCO,ADEQorEPAintheapprovaloftheNOxBARTlimitforSTI/GTl.IncludingtheGTINOxcontributionresultsinanemissionrateof0.1Jb/MMBtuNOx,wellabovethecurrentBARTdetennination.PetitionforSIPRevisionConsistentwithitspetitionforadministrativereconsideration,supplementtoitspetition,andEPA'sgrantofthatpetitionassupplemented,AEPCOformallypetitionsADEQtoadoptthetheAEPCOproposalinthesupplementtoitspetitionasaproposedrevisiontotheArizonaRegionalHazeSIPandtosubmitthatrevisiontoEPAforapprovalasthemechanismtocompleteEPA'sreconsideration.Asdiscussed,AEPCOhasconverteditsproposal(originallyinFIPfonnat)toaproposednew"AttachmentE''toAEPCO'sApacheGeneratingStationClassIAirQualityPermit.Acopyoftheproposed·'AttachmentE"isattachedforyourconsideration.AEPCOlooksforwardtoworkingwithADEQtofinalizethisproposal.BasedontheJune26,2013andsubsequentdiscussions,AEPCOunderstandsthatthisnewAttachmentEwouldbeproposedasbothaconditionalpermitrevision(e.g.,onethatwouldtakeeffectuponEPA'sapprovalasaSIPrevision)andasaSIPrevision.Afterappropriatepublicnoticeandcommentonbothactions,ADEQwouldapprovetheconditionalpennitrevisionandproposeitasaSIPrevisiontoEPAforfinalapproval.Afterfurthernoticeandcommentatthefederallevel,EPAwouldthenapproveordisapprovethisproposalasitsreconsiderationaction,concludingthereconsiderationproceedingopenedbyitsJune6,2013lettergrantingAEPCO'srequestforadministrativereconsideration.IfEPAapprovestheSIPrevision,thenAttachmentEwouldbecomebindingasbothpa1toftheArizonaSIPandasaneffectivepartofAEPCO'sClassIAirQualityPennit.lfEPAdisapproved,thenAttachmentEwouldnotbecomepartoftheSIPandwouldneverbecomeaneffectivepartofAEPCO'sClassIAirQualityPennit.OntheUnitSTJ/GTlissueidentifiedabove,AEPCOpetitionsADEQtorevisetheBARTlimitforNOxasfollows:•ToestablishNOxBARTforUnitSTlinstand-aloneoperationat0.056lb/MMBtu,30boileroperatingdayrollingaverage,asstatedinthecurrentBARTdetennination;•ToestablishNOxBARTforUnitSTl/GTIincombinedcycleoperationat0.1lb/MMBtu,30boileroperatingdayrol!ingaverage,and•ToestablishaNOxBARTlimitthatrestrictstotalNOxfrombothstand-aloneoperationofUnitSTJandcombinedcycleoperationofUnitSTIandUnitGTJ(exceptincombinedwarming/dryingoperation)to1205poundsperday,30calendardayrollingaverage.TheeffectoftheseproposedrestrictionsistomaintainorimproveuponthevisibilityimprovementsfromtheoriginalBARTdeterminationforNOx/dayfromSteamUnit1andGasTurbine1whileallowingAEPCOtocontinuetooperateunitsSTlandGTJincombinedcyclemodeatthe0.10lb/MMBturatewhichreflectstheactualcapabilityoftheunitiftheGasTurbineIemissionsareaddedback.Thelimitisderivedasfollows(usingnetgenerationvalues):DocumenL<;/GcncrationEnvirmuncmal/AIRJAEPCOS!PRevCover.docxNovember25,20!3Mr.EricMasseyRe:AEPCOApplicationforRegionalHazeSIPRevisionNovember25,2013Page31205lbs/day<0.0561b/MMBtu*IMMBtu/1,000,000Btu*82MW/hr*1000kW/1MW*I0,985Btu/kWh*24hr/dayOr12051b/day<1210.61b/dayThe82MWistakenfromAEPCO'scontractdeliveryobligationtoitsmembers.111e10,985Btu/kWhrrepresentsareasonableconservativeestimateoftheheatrateovertheprimaryoperatingrangeofSTIandGTIincombinedcycleoperation(theactualvaluecanrangefrom10,821toII,I70Btu/kWhdependingonoperatingconditionsatthetime).TheproposedlimitalsoensuresthatthemaximumimpactfromUnitsSTIandGTlarealwayslessthantheoriginalBARTlimit.AEPCObelievesthatthisisthebestwaytoresolvetheissuecausedbytheoversightofnotincludingtheGTlemissionsintheBARTdetermination.AEPCOisconfidentthattheoverallproposalresultsinvisibilityimpactsthatarebetterthanboththeoriginalregionalhazeSIP'sBARTdeterminationandEPA'sFIPBARTdeterminationduetothereductionsinemissionsachieved.AEPCOappreciatesADEQ'sandEPA'swillingness toworkwithAEPCOinthisreconsiderationoftheDecember5,2012FlP.WewouldbepleasedtoprovideanyadditionaltechnicalinformationrequiredortodiscusspossiblechangestothedraftAttachmentElanguagetoenhanceclarityforaHparties.Pleasecontactmeat480-505-3927orMichelleFreeark,AEPCO'sDirectorofEnvironmentalServices,at520-586-5122,ifyouhaveanyquestionsorconcerns.Welookforwardtoworkingwithyou.Sincerely,EricL.HiserCounselforAEPCOencViaCerlifiedMail-9207190000526987630044c/D.Whitley&M.Freeark,AEPCOw/encT.Baggiore&B.Vaidyanathan,ADEQw/encC.McKaughan&CWithey,EPARegion9w/encRegion9AirPennitsw/enc9207190000526987630051http://azgtfsites/azgl/plngrcg/ManagcdDocumcnts/GcncrntionEnvironmcntalfAIR/AEPCOSIPRevCovcr.docxNovember25.2013ARIZONADEPARTMENTOFENVIRONMENTALQUALITYAirQualityDivision1110WestWashington•Phoenix,AZ85007•Phone:(602)771-2338STANDARDPERMITAPPLICATIONFORM(AsrequiredbyA.R.S.§49-426,andChapter2,Article3,ArizonaAdministrativeCode)I.Permittobeissuedto:(Businesslicensenameoforganizationthatistoreceivepermit)ArizonaElectricPowerCooperative2.MailingAddress:P.O.Box670City:BensonState:ArizonaZIP:856023.Name(ornames)ofOwners/Principals:PatrickF.LedgerPhone:520.586.5110Fax:520.586.5576Email:pledger@ssw.coop4.Plant'SiteManager/ContactPersonandTitle:ApacheGenerationStationPhone:520.384.6509Fax:520.384.6557Email:mnelson@aepco.coop5.PlantSiteName:ApacheGenerationStationPlantSiteLocation/Address:3525N.Hwy191SouthCity:CochiseCounty:CochiseZIP:85606IndianReservation(ifapplicable,whichone):N/ALatitude/Longitude,Elevation:32"03'.768n/109"53.588'W,4185'ELEV6.EquipmentPurpose:BART-RegionalHazeCompliance7.TypeofOrganization:[Z]CorporationIndividualOwner··PartnershipGovernmentEntity)Other8.PermitApplicationBasis:I,;NewSourceI{]Revision··RenewalofExistingPermitForrenewalormodification,includeexistingpermitnumber(andexp.date):5541207/23/2018DateofCommencementofConstructionorModification:StandardIndustrialClassificationCode:4911StatePermitClass:520.586.5110IcertifythatIhaveknowledgeofthefactshereinsetforth,thatthesamearetrue,accurateandcompletetothebestofmyknowledgeandbelief,andthatallinformationnotidentifiedbymeasconfidentialinnatureshallbetreatedbyADEQaspublicrecord.1alsoattestthatIamincompliancewiththeapplicablerequirementsofthePcnnitandwillcontinuetocomplywithsuchrequirementsand anyfuturorequirementsthatbecomeeffectiveduringthelifeofthePermit.IwillpresentacertificationofcompliancetoADEQnolessthanannuallyandmorefrequentlyifSpecifiedbyADEQ.IfurtherstatethatIwillassumeresponsibilityfortheconstruction,modification,oroperationofthesourceinaccordancewithArizonaAdministrativeCode,Title18,Chapter2andanypermitissuedthereof.9.SignatureofResponsibleOfficialofd10.PrintedNameofSigner/OfficialTitle:MichaelD.Nelson,DirectorofPowerProductionDate:November26,2013TelephoneNumber:520.384.6509ApplicationforPermitandSIPRevisionApacheGeneratingStation,PermitNo.55412ArizonaElectricPowerCooperative,Inc.November25,2013Page1RESPONSETOFILINGINSTRUCTIONQUESTIONSConsistentwiththeInstructionsforApplicationComponents,becausethisisapermitrevisionthatseekstoestablishaSIPlimit,AEPCOhasprovidedonlythatinformationnecessarytoestablishtheSIPlimit.AEPCOhasprovidedinformationresponsivetoquestions1-7and9oftheADEQstandardquestions.Theotherquestionsarenotapplicabletothisrevision.ItisAEPCO'sunderstandingthatADEQwillprocessthisapplication,includingthesupportinginformationintheAEPCOPetitionandSupplement,asarevisiontotheArizonaSIPandwillthensubmitthepackagetoEPAforfinalapprovalintotheSIP,whichwouldalsoconstituteEPA'sactiononAEPCO'sPetitionforAdministrativeReconsideration.AnexplanationoftheSteamUnit1changesareinthecoverlettertothissubmittalforADEQ'sreviewandconsideration.AEPCOhasalsoattachedtothisapplicationaproposedAttachmentEincorporatingallBARTelementsunderEPAguidance.ThisapplicationalsoincorporatestheAEPCOPetitionforAdministrativeReconsideration,filedwithEPAonFebruary2,2013,andtheSupplementtothePetitionforAdministrativeReconsideration,filedwithEPAonMay29,2013,copiesofwhichwerepreviouslyprovidedtoADEQ.Pleaseletusknowifyouneedadditionalcopiesofthesedocuments.1.Detaileddescriptionofprocessesatthefacility.Thisapplicationprovidesforincorporatingproposedrevisionsto"BestAvailableRetrofitTechnology"(BART)previouslysubmittedinaPetitionforAdministrativeReconsiderationandaSupplementtothePetitionforAdministrativeReconsiderationtoU.S.EPAandADEQ.Thisapplicationissolelytochangetheemissionlimitsandassociatedmonitoring,recordkeepingandreportingrequirements.AEPCOwillsubmitasubsequentapplicationtoinstallthecontrolequipmentandmaketheactualphysicalmodificationstotheApacheStation.Theproposedrevisionwouldaccomplishthefollowingchanges:SteamUnit1TheproposedrevisionincorporatesclarificationsonwhentheBARTlimitappliestoSteamUnit1instandaloneoperationandwhenitappliestoSteamUnit1andGasTurbineIrunningincombinedoperation.AfterdiscussionswithEPAandADEQ,ithasbeendetenninedthattheBARTlimitsapplytobothstandaloneoperationofSteamUnit1andcombinedoperationofSteamUnit1andGasTurbine1.EmissionsgeneratedduringperiodswhenGasTurbine1isexhaustingthroughitsownstackorexhaustingthroughtheSteamUnit1windboxandSteamUnit1isnotfiringandnotproducingelectricity,arenotcountedforBARTpurposes.TheproposalalsocorrectsanerrorintheoriginalCH2MHillBARTsubmittalforSteamUnitI.Thatsubmittalincorrectlydetem1inedthatemissionsfromGasTurbine1arenotconsideredforBARTpw-posesatanytime.EPAandADEQhavedeterminedthatthisisnotthecase.Asaresult,emissionsfromGasTurbine1needtobeaddedtotheBARTdetermination.AEPCOdoeshttp:f/azglisitcsJazgt/plngregfManagedDocumcntsJGenerationEnvironmental/AIR!AEPCOSlPPermitApplication_docxNovember25,2013

# Application

for PenTiit

and

SIP Revision Apache Generating

Station,

Pe1mit

No. 

# 55412 Arizona

Electric

Power Cooperative,

Inc. November



# 25,2013 Page2 

# not wish

to disturb

the BART modeling

analysis. Therefore,

AEPCO

has proposed

that

the BART

NOx

limit

be raised

to 0.10 lb/MMBtu,

30 boiler operating

day average,

and

that

a new 1205lb/day,

30 calendar

day operating

average,

be established.

The 1205lb/day

limit

is less

than the prior BART

limit of0.056lb/MMBtu

limit, adjusted

for Stearn

Unit

1 +Gas Turbine

1 's heat rate. Therefore,

the visibility

modeled

impact

of Steam

Unit

I (and

Gas Turbine

1)

is less

than the visibility

impact

under

the prior BART

limit

All other

SIP

and BART

limits remain

in place. Stearn

Unit

2 AEPCO proposes

to convert

Steam

Unit

2 from

coal

to natural

gas firing

on

the effective

date

of the current

BART determination,

December

5, 2017. Converting

Steam

Unit

2 from

coal

to natural

gas significantly

reduces



# S0

2 

# emissions

(from

0.15 lb/MMBtu,

30 boiler operating

day average

to 0.00064 lb/MMBtu,

30 boiler operating

day average),

reduces

PM emissions

(from O.D3 lb/MMBtu,

30 boiler operating

day average

to 0.01

and

then 0.008 lb/MMB!u,

30 boiler operating

day average),

and results

in

a slight increase

in NOx emissions

(from

0.07 lb/MMBtu, 30 boiler operating

day average

to 0.085 lb/MMBtu,

30 boiler operating

day average).

AEPCO retains

the right

to run Steam

Unit

2 on coal

in

the event

of

a pipeline

natural

gas supply disruption

caused

by events

such

as

a pipeline

break

or freeze-up,

to ensure

electric

delivery

to its customers.

AEPCO

would

return

to natural

gas

only

firing promptly

upon restoration

of pipeline

service. Stearn

Unit

3 AEPCO

also proposes,

in conjunction

with

the conversion

of Steam

Unit

2

to natural

gas,

to convert

the presently-required

selective

catalytic reduction

(SCR)

control technology

on Steam Unit

3

to selective non-catalytic

reduction

(SNCR).

This results

in

an increase

in the NOx emission

rate from

0.07 lb/MMBtu

to 0.23 lb/MMBtu,

30 boiler operating

day average.

AEPCO recognizes

that

this

is

a significant

change. Nevetiheless,

modeling

supplied

to EPA

and ADEQ as part

of AEPCO's

Petition

and Supplement demonstrates

that

the overall visibility

impact

of converting

Steam

Unit

2

to natural

gas

and Steam

Unit

3

to SNCR

still results

in

a net visibility improvement

over

both ADEQ's

original

SIP BART

and

the EPA

FIP BART. Accordingly, AEPCO

believes

that

this proposal constitutes

a "better

than BART" application

that

can

be approved

to replace

the existing

BART established

in the Arizona

regional

haze

SIP

and

the federal regional

haze

FIP. 2.

A flow diagram

for

all processes. 

# Not applicable. 3. Description

of alternate operating

scenarios,

if applicable. 

# AEPCO

has requested

an alternate operating

scenario

for Steam

Unit

2

to allow

it

to burn

coal

in the event

of

a pipeline

supply disruption.

Paragraph

1 below explains

the types

of disruptions that would qualify. Paragraph

2 specifies

that Steam

Unit

2 would

then comply

with

the

SIP

coal http://azgt/silcs/azgt/plngregfManaged

Documents/Generation Environmcntai/AIR/AEPCO

SIP Permit Application.docx

November

25. 2013ApplicationforPermitandSIPRevisionApacheGeneratingStation,PermitNo.55412ArizonaElectricPowerCooperative,Inc.November25,2013Page3combustionlimitsineffectimmediatelypriortotheconversiontonaturalgasduringtheperiodoftheemergency.Paragraph3explainsthatAEPCOwillresumecompliancewiththeprimary,naturalgaslimitsforNOxandS02onthenextboileroperatingdayaftercoalcombustionceasesandwithin90daysforparticulatematter.ThedelayforparticulatematterisrequiredbecauseAEPCOmustcleantheboilerofanyresidualcoalashbuildup.Thismaynotbefeasibleimmediatelyuponrestorationofnaturalgasservice,dependinguponelectricdemand,butcanbeachievedwithinthe90dayperiod.Asapracticalmatter,particulatematteremissionswillbegintodeclineimmediatelyuponresumptionofnaturalgasfiring,butmaynotachievefinalnaturalgaslimitsuntilcleaning.1.ThePermitteewillnotoperateSteamUnit2oncoalafterDecember5,2017exceptintheeventofasupplydisruptioncausedbynaturalgassupplierortransporterpipelinefailure,freeze-uporpipelinecompressionfailurethatreducesgasvolumeorgaspressurebelowthatnecessaryforApacheGeneratingStationgasgeneration.ThePermitteemustdiscontinuecoalfiringasexpeditiouslyaspossibleafterrestorationofnaturalgasserviceatlevels supportingcontinuousfiringofSteamUnit2andinnoeventmorethan48hoursafterrestorationofsuchservice.2.Duringanysuchperiodofcoaloperationandforsuchperiod thereafterasprovidedinSectionlll.E.3,thePermitteeshallcomplywiththeemissionlimitssetforthinConditionIll.B.lforPM10andS02andshallminimizeNOxemissionsbyuseofgoodcombustionpracticesandnottoexceed0.37lb/MMBtu,averagedover30boiler-operatingdays.3.EffectivewiththenextboileroperatingdayaftercoalcombustionceasesforNOxandS02,andwithin90boileroperatingdaysaftercoalcombustionceasesforPM10,thePermitteeshallresumecompliancewiththeapplicableemissionslimitssetforthinConditionsIII.BorIII.D,asapplicable.4.EmissionsRelatedInformation.PleaseseeAppendixA,providinginformationforSteamUnit1NOxemissions.EmissionsinformationforSteamUnits2and3isfoundinthePetitionforAdministrativeReconsiderationandSupplementtothePetitionforAdministrativeReconsideration.5.Anexplanationofanyproposedexemptionsfromotherwiseapplicablerequirements.Seediscussionunder#3above.6.Thepermitteewillberequiredtoconductairdispersionmodelingforallnewsourcesandcertaintypesofmodificationstoexistingsourcestodocumentcompliancewithapplicableambientstandards.ThecriteriaforwhenmodelingisrequiredandhowthemodelingshouldbeconductedarecomprehensivelycoveredintheDepartment'sairdispersionmodelingguidelinesthatareavailableonlineat:http://www.azdeg.gov/environ/air/permits/standards.htmlhttp://azgt/sites/azgt/plngreg/ManagedDocuments/GenerationEnvironmental/AIRIAEPCOSIPPennitApplication.docxNovember25,2013ApplicationforPermitandSIPRevisionApacheGeneratingStation,PermitNo.55412ArizonaElectricPowerCooperative,Inc.November25,2013Page4Therearenoemissionsincreasesanticipatedaspartofthisproject,whichistoestablishretrofitcontrolsonSteamUnits1,2and3.Whiletherearesomechangesinvalues,thosechangesarereconsiderationsofemissionslimitsnotnewemissionsandthereisno"increase"inactualemissionsasallemissionscoveredbytheproposal(NOx,S02andPM)arebeingreducedasaresultofBART.AEPCOisnotpresentlyawareofanycollateralemissionsimpactsfromtheproposedemissionscontrolssetforthinthisproposal.7.Applicantsarerequestedtoprovideamodelingprotocolpriortoconductingthemodeling....AEPCOconductedmodelingusingthecurrentEPA-approvedvisibilitymodeling,assetforthinitsSupplementtothePetitionforAdministrativeReconsideration.8.Acomprehensiveequipmentlistthatcontainsinformationaboutthemake,model,serialnumber,equipmentidnumber,dateofmanufactureofallprocessandcontrolequipment.Notapplicable.Thisisanapplicationtoestablishtheemissioncontroltechnologylimits.OncethepermitandSIPlimitsareestablished,AEPCOmustthencompleteengineeringtoselectthefinalequipment.AEPCOisconfidentthattherearepresentlyavailable technologiesthatwillmeetthelimitsproposedherein.AEPCOwillfileasubsequentpermitfilingwithADEQtoprovidethespecificinformationrequestedinthisquestion.http:/lazgt/sites/azgt/plngrcg/ManagcdDocuments/GenerationEnvironmcntal/A!RIAEPCOSIPPem1itApplication.docxNovember25,2013PROPOSEDATTACHMENT"E":BESTAVAILABLERETROFITTECHNOLOGYAirQualityControlPermitNo#55412ForArizonaElectricPowerCooperative,Inc.-ApacheGeneratingStationI.BestAvailableRetrofitTechnologyApplicabilityandEffectiveDateAttachment"E"shallbecomeeffectiveontheeffectivedateoftheAdministrator'sactionapprovingitaspartofthestateimplementationplan.Wheremultipleemissionlimits,standardsorrequirementsapplytoaunit,themoststringentlimit,standardorrequirementcontrols.II.BestAvailableRetrofitTechnologyforSteamUnit1A.Applicability.1.TheBARTlimitforStearnUnit1willapplywhenSteamUnitIoperatesinstandaloneoperationorwhenSteamUnit1andGasTurbine1operateincombinedcycleoperation.2.TheBARTlimitdoesnotapplyto:a.GasTurbine1instand-alonesimplecycleoperation;orb.SteamUnit1andGasTurbineIincombinedwarming/dryingoperationwhentheSteamTurbineIburnersareshutoffandSteamTurbine1isnotproducingelectricity.B.BestAvailableRetrofitTechnologyLimits[AZRHSIP,77Fed.Reg.70512,70515(Dec.5,2012)]1.SteamUnit1shallcombustonlypipelinenaturalgas.2.SteamUnit1shallnotemitmorethan0.00064lbS02/MMBtuheatinputinstandaloneoperationorincombinedcycleoperationwithGasTurbine1,averagedover30boileroperatingdays.3.SteamUnitIshallnotemitmorethan0.0075lbPM10/MMBtuheatinputinstandaloneoperationorincombinedcycleoperationwithGasTurbine1,averagedover30boileroperatingdays.4.EffectiveDecember5,2017,SteamUnitIshallnotemitNOxinstand-aloneoperationinexcessof0.056lb/MMBtuheatinput,averagedover30boileroperatingdays.5.EffectiveDecember5,2017,SteamUnit1andGasTurbineIincombinedcycleoperationshallnotemitNOxinexcessof0.10lb/MMBtuheatinput,averagedover30boileroperatingdays.lklcuments/GcncrationEnvironmentai/AIR!l'roposcdAnachmcntE•AEl'COBARTSIP2013·11·25docxI6.EffectiveDecember5,2017,SteamUnit1instand-aloneoperationandSteamUnit1andGasTurbinelincombinedcycleoperationshallnotemitNOxinexcessof1205lb/day,averagedover30calendardays.7.ThePermitteemaycomplywiththelimitsinSectionIIthroughanycombinationofprocessadjustmentsoradd-oncontrols,providedthatsuchcombinationachievestheemissionlimit(ona30-dayrollingaveragebasis),complieswithapplicableregulationsandpermitsandthePermitteeobtainsanynecessarypreconstructionoroperatingapprovals.III.BestAvailableRetrofitTechnologyforSteamUnits2and3A.CompliancewithBestAvailableRetrofitTechnologyLimitsonNOxemiSSionsfromSteamUnits2and31.ComplianceduringaboileroperatingdaywhenbothunitsareoperatingISdemonstratedwheneitherofthefollowingconditionsismet:a.ThecombinedNOxemissionsofSteamUnits2and3meetthecombinedlimitinConditionIII.D;orb.EachunitmeetsitsindividualNOxlimitinConditionsIILBandIII.C.2.ComplianceduringaboileroperatingdaywhenonlyoneunitisoperatingISdemonstratedwhentheoperatingtmitmeetsitsindividualNOxlimitspecifiedmConditionIll.BorIll.C.3.ExceptasprovidedinConditionsIII.B.2andIII.C.2,thePermitteemaycomplywiththelimitsinSectionIIIthroughanycombinationofprocessadjustmentsoradd-oncontrols(oruseofpipelinequalitynaturalgasinlieuofcoalinSteamUnit3),providedthatsuchcombinationachievestheemissionlimit(ona30-dayrollingaveragebasis),complieswithapplicableregulationsandpermitsandthePermitteeobtainsanynecessarypreconstructionoroperatingapprovals.B.BestAvailableRetrofitTechnologyLimitsforSteamUnit21.EffectiveDecember5,2016,SteamUnit2shallnotemitS02inexcessof0.15lb/MMBtuheatinput,averagedover30boileroperatingdaysandshallnotemitPMwinexcessof0.03lb/MMBtuheatinput(filterableonly),averagedover30boileroperatingdays.2.EffectiveDecember5,2017,SteamUnit2shallbumonlypipelinequalitynaturalgasexceptintheeventofanemergencyasdefinedinSectionIII.E.3.EffectiveDecember5,2017,SteamUnit2shallnotemitNOxinexcessof0.085lb/MMBtuheatinput,averagedover30boileroperatingdays,SOzinexcessof0.00064lb/MMBtuheatinput,averagedover30boileroperatingdays,andPM10inexcessof0.01lb/MMBtuheatinput(filterable+condensable),averagedover30boileroperatingdays.4.EffectiveDecember5,2018,SteamUnit2shallnotemitPMwinexcessof0.008lb/MMBtuheatinput(filterable+condensable),averagedover30boileroperatingdays.ht!p:lfazgt/sites/azgt/plngrcg/ManugcdEnvironmental/AIR/ProposedAttachmentE-AEPCO!3ARTSIP2C.BestAvailableRetrofitTechnologyLimitsforSteamUnit31.EffectiveDecember5,2016,SteamUnit3shallnotemitS02inexcessof0.15lb/MMBtuheatinput,averagedover30boileroperatingdaysandshallnotemitPM1oinexcessof0.03lb/MMBtuheatinput(filterableonly),averagedover30boileroperatingdays.2.EffectivenolaterthanDecember5,2017,SteamUnit3shallinstall,operateandmaintainlowNOxburners,overfireair,andselectivenon-catalyticreduction(SNCR)technology.TheSNCRshalloperateatalltimesthatSteamUnit3isinoperationandexhaustgastemperaturesequalorexceedthemanufacturer'srecommendedminimumtemperatureforoperationoftheSNCRtechnology.3.EffectiveDecember5,2017,SteamUnit3shallnotemitNOxinexcessof0.23lb/MMBtuheatinput,averagedover30boileroperatingdays.D.BestAvailableRetrofitTechnologyLimitsforCombinedOperationofSteamUnits2and3EffectiveDecember5,2017,inlieuoftheindividuallimitssetforthforNOxinConditionsIILB.3andIII.C.3,thecombinedNOxemissionsofSteamUnits2and3,averagedover30boiler-operatingdays,shallnotexceedthelimitestablishedinthefollowingequation:Limit=(Unit2MMBtuGas*0.085lb/MMBtuGas)+(Unit2lb/MMBtucoaJ)+(Unit3MMBtu*0.23lb/MMBtu)(Unit2MMBtu+Unit3MMBtu)E.EmergencyProvisionforSteamUnit21.ThePermitteewillnotoperateSteamUnit2oncoalafterDecember5,2017exceptintheeventofasupplydisruptioncausedbynaturalgassupplierortransporterpipelinefailure,freeze-uporpipelinecompressionfailurethatreducesgasvolumeorgaspressurebelowthatnecessaryforApacheGeneratingStationgasgeneration.ThePennitteemustdiscontinuecoalfiringasexpeditiouslyaspossibleafterrestorationofnaturalgasserviceatlevelssupportingcontinuousfiringofSteamUnit2andinnoeventmorethan48hoursafterrestorationofsuchservice.2.DuringanysuchperiodofcoaloperationandforsuchperiodthereafterasprovidedinSectionIILE.3,thePermitteeshallcomplywiththeemissionlimitssetforthinConditionIll.B.1forPM10andS02andshallminimizeNOxemissionsbyuseofgoodcombustionpracticesandnottoexceed0.37lb/MMBtu,averagedover30boiler-operatingdays.3.EffectivewiththenextboileroperatingdayafternaturalgasoperationisrestoredforNOxandS02,andwithin90boileroperatingdaysafternaturalgasoperationisrestoredforPM10,thePermitteeshallresumecompliancewiththeapplicableemissionslimitsset forthinConditionsIII.BorIILD,asapplicable.http:l/azgt/5ites/azgtlplngrog/ManagcdDocuments/GencmtionEnvironmcmai/AJRI!'roposedAttachmentE,AEPCOBARTSIP2lll3-ll-25.docx3IV.ComplianceDeterminationAContinuousEmissionsMonitoringSystem.1.Atalltimes,thePermitteeshallmaintain,calibrate,andoperateaCEMS,infullcompliancewiththerequirementsfoundat40CFRPatt75,toaccuratelymeasureS02,NOx,diluent,m1dstackgasvolumetricflowratefromSteamUnits2and3.SteamUnit2isnotsubjecttotherequirementsofthisConditionIV.AforS02uponitsconversiontopipelinenaturalgas,butshallthencomplywithConditionIV.C.4.2.Atalltimes,thePermitteeshallmaintain,calibrate,andoperateaCEMS,infullcompliancewiththerequirementsfmmdat40CFRPart75,toaccmatelymeasureNOx,diluent,andstackgasvolumetricflowratefromSteamUnitI.3.Exceptasprovidedherein,allvalidCEMShourlydatashallbeusedtodetenninecompliancewiththeemissionlimitationsforNOxandS02(whenapplicable)inSectionsIIand IIIforeachunit.WhentheCEMSisout-of-controlasdefinedbyPart75,thatCEMSdatashallbetreatedasmissingdataandnotusedtocalculatetheemissionaverageoftheaffectedunit.EachrequiredCEMSmustobtainvaliddataforatleast90percentoftheunitoperatinghours,onanannualbasis.4.ThePermitteeshallcomplywiththequalityassuranceproceduresforCEMSfoundin40CFRPart75.InadditiontothesePart75requirements,relativeaccuracytestauditsshallbecalculatedforboththeNOxandS02poundsperhourmeasurementandtheheatinputmeasurement.TheCEMsmonitoringdatashallnotbebiasadjusted.5.HeatinputforSteamUnit1andGasTurbine1shallbemeasuredinaccordancewithPart75fuelgasmeasurementproceduresfoundin40CFRPart75,AppendixD.B.ComplianceDeterminationsforNOx.I.EffectiveDecember5,2017,the30-dayrollingaverageNOxemissionrateforeachofthefollowing:stand-aloneoperationofSteamUnitI,combinedcycleoperationofSteamUnit1andGasTurbine1,Stean1Unit2,SteamUnit3,andcombinedSteamUnits2and3,shallbecalculatedforeachcalendardaythattheunitoperatesinaccordancewiththefollowingprocedure:a.StepOne:Foreachunit\sumthehourlypoundsofNOxemittedduringthecurrentboiler-operatingdayandtheprecedingtwenty-nine(29)boileroperatingdays,tocalculatethetotalpoundsofNOxemittedoverthemostrecentthirty(30)boiler-operatingdayperiodforeachcoal-firedunit,exceptthatforSteamUnit1andGasTurbineIduringthecombinedwmming/dryingoperationdescribedinConditionILA.2.b,allemissionsareexcluded;b.StepTwo:Foreachunit,sumthehourlyheatinput,inMMBtu,duringthecurrentboileroperatingdayandtheprecedingtwentynine(29)boileroperatingdays,tocalculatethetotalheatinput,inMMBtu,overthemostrecentthirty(30)boiler-operatingdayperiodforeachcoal-firedunit.ForSteamUnit1andGasTurbine1operatingincombinedcycleoperation,MMBtufrombothunitsshallbeincludedinthiscalculation;butforSteamhnp'/lazgtlsitcs/azgt/plngrcg/MnnagcdDocuments/GenerationEnvironmentai/A!R/I'ropose<;lAttachmentE-AEPCOBARTSIP2013"11-25_docx4UnitIandGasTurbine1operatingincombineddrying/warmingoperation,MMBtufromneitherunitshallbeincluded;c.StepThree:Foreachunit,dividethetotalpoundsofNOxemittedbythatunitfromsteponebythetotalheatinputforthatunitfromsteptwotocalculateeachunit's30-dayrollingaverageNOxemissionrate,inpmmdsofNOxperMMBtu,foreachcalendarday.ThisisthefinalstepfordeterminingwhetherSteamUnit1instand-aloneoperationcomplieswiththelimitsinConditionII.B.4,whetherSteamUnit1andGasTurbine1incombinedcycleoperationcomplywiththelimitsinConditionII.B.5,andwhetherStearnUnits2and3complywiththelimitsinConditionsIII.BorIII.C;d.StepFour:IfdemonstratingcomplianceforSteamUnits2and3withthecombinedlimitinSectionIII.D,sumtogetherthetotalpoundsofNOxemitiedfromSteamUnits2and3overeachunit'smostrecentthirty(30)boileroperatingdayperiod(themostrecent30boileroperatingdayperiodsfordifferentunitsmaybedifferent);e.StepFive:SumtogetherthetotalheatinputfromSteam.Units2and3overeachunit'smostrecentthirty(30)boiler-operatingdayperiod;f.StepSix:DividethetotalpoundsofNOxemittedfromstepfourforSteamUnits2and3bythetotalheatinputfromstepfiveforSteamUnits2and3,tocalculatethecombined30-dayrollingaverageNOxemissionrateforSteamUnits2and3,inpoundsofNOxperMMBtu,foreachcalendarday.2.EffectiveDecember5,2017,forpurposesofdeterminingcompliancewiththelimitinConditionII.B.6,the30-dayrollingaverageNOxpound/dayemissionrateforstandaloneoperationofSteamUnit1orcombinedcycleoperationofStemnUnit1andGasTurbineIshallbecalculatedforeachcalendardayinwhicheitherstand-aloneorcombinedcycleoperationoccursinaccordancewiththefollowingprocedure:a.SumthehourlypoundsofNOxemittedonthatcalendardayandthehourlypoundsofNOxemittedduringtheprecedingtwenty-nine(29)calendardaysoperationoccurred,ifany,tocalculatethetotalpoundsofNOxemittedoverthemostrecentthirty(30)calendardayperiod,exceptthatforSteamUnit1andGasTurbine1duringthecombinedwarming/dryingoperationdescribedinConditionTI.A.2.b,allemissionsareexcluded;b.Dividethesumby30tocalculatetherollingcalendardayaveragepound/dayemissionrateforStearnUnitIinstand-aloneoperationandSteamUnit1andGasTurbine1incombinedcycleoperationforcomparisonwiththelimitinConditionII.B.6.3.ForpurposesofdeterminingcompliancewiththelimitinConditionII.B.4,onlyNOxemissionsgeneratedandtheheatinputoffuelbumedduringperiodswhenSteamUnit1isoperatinginstm1d-aloneoperationshallbecountedinthecalculationsrequiredbyConditionsIV.B.l.athroughc.4.ForpurposesofdeterminingcompliancewiththelimitinConditionJI.B.5,onlyNOxemissionsgeneratedandtheheatinputoffuelburnedduringperiodswhenSteamUnit1andGasTurbine1areoperatingincombinedcycleoperationshallbecountedinthecalculationsrequiredbyConditionsIV.B.l.athroughc.5.ExceptasotherwiseprovidedintillsConditionIV.B,each30-dayrollingaverageNOxemissionrateshallincludeallemissionsandallheatinputthatoccurduringallDocuments/GenerationEnvironmental/AIR/ProposedAttachmentE•i\EPCO131\RTSIP2013-11-25.docx5periodswithinanyboiler-operatingday,includingemissionsfromstartup,shutdown,andmalfunction.6.Complianceisdemonstratedif:a.ForSteamUnit1:r.Instand-aloneoperationitmeetsitsNOxlimitinConditionII.B.4ascalculatedinConditionIV.B.lstepthree;ORu.IncombinedcycleoperationwithGasTurbine1itmeetsthecombinedcycleNOxlb/tonlimitinConditionII.B.5ascalculatedinConditionIV.B.lstepthreeANDitmeetstheNOxlb/daylimitinConditionILB.6ascalculatedinConditionIV.B.2;ORUl.Itisnotoperatingduringthatcalendarday.b.ForSteamUnits2and3:1.EachoperatingunitmeetsitsindividualNOxlimitinConditionULBorIII.Crespectivelyascalculatedinstepthree;ORu.ThecombinedSteamUnits2and3averagemeetsitscombinedNOxlimitinConditionIII.Dascalculatedinstepsix;OR111.Theunitisnotoperatingduringthatcalendarday.7.IfavalidNOxpoundsperhourorheatinputisnotavailableforanyhourforaunit,thatheatinputandNOxpoundsperhourshallnotbeusedinthecalculationofthe30-dayrollingaverage,exceptthatifonlyNOxpoundsperhourdataarcavailable,itmaybeusedtocalculatecompliancewiththepoundperdaylimitinConditionII.B.6,ifapplicable,inaccordancewithConditionIV.B.2.C.ComplianceDeterminationsforS021.EffectiveDecember5,2016,the30-dayrollingaverageS02emissionrateforSteamUnits2and3shallbecalculatedforeachcalendardayonwhichtheunitoperatesinaccordancewiththefollowingprocedure:a.StepOne:SumthetotalpoundsofS02emittedfromtheunitduringthecurrentboiler-operatingdayandtheprevioustwenty-nine(29)boileroperatingdays;b.StepTwo:SumthetotalheatinputtotheunitinMMBtuduringthecurrentdayandtheprevioustwenty-nine(29)boiler-operatingday;c.StepThree:DividethetotalnumberofpoundsofS02emittedduringthethirty(30)boiler-operatingdaysbythetotalheatinputduringthethirty(30)boiler-operatingdays.Anew30-dayrollingaverageS02emissionrateshallbecalculatedforeachnewboiler-operatingday.2.Each30-dayrollingaverageS02emissionrateshaHincludeallemissionsandallheatinputthatoccurduringallperiodswithinanyboiler-operatingday,includingemissionsfromstartup,shutdown,andmalfunction.3.IfavalidS02poundsperhourattheoutletoftheFGDsystemorheatinputisnotavailableforanyhourforaunit,thatheatinputandS02poundsperhourshallnotbeusedinthecalculationofthe30-dayrollingaverage.4.ComplianceisdemonstratedifeachoperatingunitmeetsitsindividualS02limitinConditionIII.BorIli.CrespectivelyascalculatedinstepthreeORiftheunitisnotoperatingduringthatcalendarday.http:f/azgtlsitcs/azgl/plngrcg/ManagcdDocumcnts/GencmtionEnvironmental/AIR/ProposedAttachmentE•AEPCOBARTSIP2013-11-25docx"5.SteamUnit1andStean1Unit2(afterconversiontopipelinenaturalgas)shalldemonstratecompliancewiththeso2limitsthroughuseofpipelinequalitynaturalgas.6.IfSteamUnit2operatesoncoalpursuanttoanemergencyasdefinedinConditionIII.EofthisAttachmentafteritsS02CEMSisremoved,thePennitteewilldemonstratecompliancewiththeS02limitsinConditionIII.E.2bycalculatingemissionsbasedonthesulfurcontentofthecoalonalb/MMBtubasismultipliedbythenumberofMMBtufiredoncoalmultipliedbytheoverallsulfurremovalefficiencyoftheSDASunitandconvertedtoSOzandunitsofthestandard.D.ComplianceDeterminationsforPM10I.CompliancewiththeparticulatematteremissionlimitationforSteamUnits2and3shallbedetenninedfromannualperfonnancestacktests.Withinonehundredeighty(180)daysofthecompliancedeadlinespecifiedinConditions111.8orTII.CofthisAttachment,andonatleastanannualbasisthereafter,thePermitteeshallconductastacktestonStearnUnit2and3tomeasurePM10usingEPAMethod5,in40CFRpart60,AppendixA,orMethod201A/202in40CFRPart51,AppendixM.2.SteamUnit2,afterconversiontopipelinenaturalgas,shalldemonstratecompliancewithitslimitsinConditionsIII.B.l,III.B.3andIII.B.4within90daysoftheeffectivedatesspecifiedinConditionsIII.B.l,III.B.3and111.8.4respectively.ComplianceforSteamUnit2shallbedemonstratedusingEPAMethod5,in40CFRpart60,AppendixAandMethod202,in40CFRPart51,AppendixM,orEPAMethod201A/202in40CFRPart51,AppendixM.3.SteamUnit1andSteamUnit2,aftercompletingthetestingrequiredinConditionsIV.D.landIV.D.2,shalldemonstratecompliancethroughuseofpipelinequalitynaturalgas.4.AtestprotocolshallbesubmittedtoADEQaminimumof30dayspriortothescheduledtesting.Theprotocolshallidentifywhichmethod(s)willbeusedtodemonstrate compliance.Eachtestshallconsistofthreeruns,witheachrunatleast120minutesindurationandeachruncollectingaminimumsampleof60drystandardcubicfeet.Resultsshallbereportedinlb/MMBtuusingthecalculationin40CFRPart60AppendixAMethod19.5.Inadditiontorequiredstacktests,theowner/operatorshallmonitorparticulateemissionsforcompliancewiththeemissionlimitationsinaccordancewithanyapplicableComplianceAssuranceMonitoring(CAM)plandevelopedandapprovedinaccordancewith40CFRPart64.TheaveragingtimeforanyotherdemonstrationofPM10complianceorexceedanceshallbebasedona6whouraverage.V.Recordkeeping,ReportingandMiscellaneousProvisionsA.Recordkeeping.ThePem1itteeshallmaintainthefollowingrecordsforatleastfive(5)years:1.AllCEMSdata,includingthedate,place,andtimeofsamplingormeasurement;parameterssampledor measured;andresults.Documcnts/GcncrmionEnv!ronmental/AlRIProposcdAttacllmemE-AEPCOBARTS!P20!3-ll-25.docx72.Daily30-dayrollingemissionratesforNOxandS02,whenapplicable,foreachunit,calculatedinaccordancewithSectionIV.3.Alogofeachdaywhenaunitdoesnotoperate.4.Recordsofqualityassuranceandqualitycontrolactivitiesforemissionsmeasuringsystemsincluding,butnotlimitedto,anyrecordsrequiredby40CFRPart75andSectionIV.5.RecordsofallmajormaintenanceactivitiesconductedonSteamUnits1,2or3,theirassociatedairpollutioncontrolequipment,andCEMS.6.Anyotherrecordsrequiredby40CFRPart75.B.Reporting.1.ThePermitteeshallnotifytheDirectorandEPARegion9withintwoweeksaftercompletionofinstallationofcombustioncontrolsorSelectiveNon-CatalyticReactorsonanyofthetmitssubjecttothisAttachment.2.Within30daysaftertheapplicablecompliancedate(s)inConditionsII.B,IILB,III.CandIII.D,andwithin30daysofeverysecondcalendarquarterthereafter(i.e.,semiannually),thePeimitteeshallsubmitareportthatliststhedaily30-dayrollingemissionratesforNOxandS02foreachunit,calculatedinaccordancewithSectionIVofthisAttachment.Includedinthisreporishallbetheresultsofanyrelativeaccuracytestauditperformedduringthetwoprecedingcalendarquarters.C.EquipmentOperations.Atalltimes,includingperiodsofstmtup,shutdown,andmalfunction,thePennitteeshall,totheextentpracticable,maintainandoperatetheunitincludingassociatedairpollutioncontrolequipmentinamannerconsistentwithgoodairpollutioncontrolpracticesforminimizingemissions.Pollutioncontrolequipmentshallbedesignedatldcapableofoperatingproperlytominimizeemissionsduringallexpectedoperatingconditions.DeterminationofwhetheracceptableoperatingandmaintenanceproceduresarebeingusedwillbebasedoninformationavailabletotheDirector,whichmayinclude,butisnotlimitedto,monitoringresults,reviewofoperatingandmaintenanceprocedures,andinspectionoftheunit.D.AffinnativeDefenseforMalfunctionsThefollowingregulationsareincorporatedbyreferenceandmadepartofthispennitandstateimplementationplan:1.R18-2-101,paragraph65;2.R!S-2-310,sections(A),(B),(D)and(E)only;and3.R18-1-310.01.hltp://azgt/sitcs!azgt/plngreg/Managedl)Qcumcnts/GcncrationEnvironmcmai/AIR/ProposcdA!tachmcmE-AEPCOBARTSIP2013-ll-25.docx'E.DefinitionsTermsnotdefinedbelowshallhavethemeaninggiventothemintheCleanAirActortheDepmtment'sregulationsimplementingtheClem1AirAct.ForpurposesofthisAttachment:Boiler-operatingdaymeansa24-hourperiodbetween12midnightandthefollowingmidnightduringwhichanyfueliscombustedatanytimeintheunit.ForSteamUnit1,boileroperatingdaydoesnotincludeanydayinwhichtheonlyoperationisthecombinedwarming/dryingoperationwithGasTurbine1asdefinedinConditionII.B.2.b.ForpurposesofthelimitinConditionII.B.4,"boileroperatingdays"shallincludeonlythosedaysduringwhichSteamUnit1operatesinstand-alonemode.ForpurposesofthelimitinConditionII.B.5,"boileroperatingdays"shallincludeonlythosedaysduringwhichSteamUnit1andGasTurbine1operateincombinedcyclemode.FlueGasDesulfurizationSystemorFGDmeansapollutioncontroldevicethatemploysfluegasdesulfurizationtechnology,includinganabsorberutilizinglime,flyash,orlimestoneslurry,forthereductionofsulfurdioxideemissions.Operatinghourmeansanyhourthatfossilfuelisfiredintheunit,exceptthatforSteamUnitI,operatinghourdoesnotincludeanyhourinwhichtheonlyoperationisthecombinedwarming/dryingoperationwithGasTurbine1asdefinedinConditionIl.B.2.b.ValiddatameansdatarecordedwhentheCEMSisnotout-of-controlasdefinedbyPart75.http://azgt!sites/azgt/plngrcg!ManagedDocuments/GenerationEnvironmcnmi/AJR/ProposcdAttachmcmE-AEPCOBARTSIP2013-l!-25_docx9