AIRPERMITSOFFICEAvenalEnergyProject(SJ08-01)DATE:May26,2011TO:AvenalEnergyProjectPSD1?ermitDecisionProjectFileFROMShirleyRivera(AR-3)SUBJECT:FinalPermitRequirements—SelectedBackgroundInformationThismemorandumsummarizescertaininformationrelevanttoseveralrequirementsinthefihalAvenalEnergyProject(AEP)PSDpermitthatdifferfromthoseintheproposedpermit.Thisinformtionpertamstothefollowingtopics•AuxiliaryBoiler—PMandPM10hourlyemissionsrate•Turbines—COemissionlimit•Turbines—COhourlyemissionsrateinlb/hr•Turbines—LimitsforstartupandshutdowndurationAuxiliaryBoiler—PM/PM1OhourlyemissionsrateWeinadvertentlyomittedemissionslimitsforthisemissionunitintheproposedpermit.WemadeanadministrativecorrectionbyaddingaPWPM10emissionslimitof0.0034grains/dscf(gr/dscr)fortheunit,consistentwiththepermitapplicationinthefinalpermit.Wehaveretainedtherequirementtosourcetesttheauxiliaryboilerthroughaninitialperformancetestandrevisedthepermitlanguagetorequiretestingeveryfiveyearsfollowingtheinitialperformancetest,ratherthanannually.Thecommensurateemissionlimitingr/dscffortheinitialandsubsequenttestingwascalculatedtobe0.0034r/dscfbasedonthefollowingapplicationinformationandtheF-Factormethodology(40CFRPart60,AppendixA,Method19).(AssumeallPM10=PM)Given:Table6.2-1.2(Appendix-1),liaryBilerSpecificationsBoiler,MMBtu/hr374PM10,lb/MMBtu0.0050Conversionfactorandreferences:7,000grains/lbF-Factor(naturalgas)=8,710dscftMMBtu%O2=3%Calculationmethodology:(1bPM10/MMBtu)/(F-factor)/(20.9/(20.9-%O2))*7,000grains/lb=rPM/dscfWhere(0.0050)/(8,710)/(20.9/(20.9-3))*7,000=0.0034arPMçfTurbines—COemissionlimitTheKleenEnergyfacilitywascitedinpubliccommentsEPAreceivedin2009withrespecttoCOemissionlimitsfortheAEP.OnThursday,May12,2011,1spokewithrepresentativesoftheConnecticutDepartmentofEnvironmentalProtection(DEP)regardingthestatusoftheKleenEnergyfacility;i.e.,0526EPA_AVENAL-MEMOTOFILEPERMITREVN_SR.DOCFinalPermitRequirements--SelectedBackgroundInformationPage2whetherthefacilitywasoperationalandattainingitspermittedlimits.Ispokebrieflywiththefollowingpersonnel:•RicPirolli(ric.pirolli@ct.gov),AssistantDirectorofPermitting•Louis“Lou”Corsino(Iouis.corsino@ct.gov,PermitEngineer(forKleenEnergypermit)•StephenAnderson(stephen.andreson@ct.gov),StackTestSupervisorMr.PirollidirectedmetoMr.Corsinoregardingthepermitstatus.Mr.CorsinodirectedmetoMr.Andersonregardingthesourceteststatus.Theinformationprovidedissummarizedasfollows:•Mr.Corsino—TheCOemissionlimitsremainthesameaspermitted;Mr.Corsinoforwardedacopyofthepermits.Unit#1begancommercialoperationsonMay3,2011(afterfirstfireonApril13,2011).Unit#2hadnotyetbeguncommercialoperations;however,itdidundergofirstfireonApril21,2011.•Mr.Anderson—NeitherUnit#1norUnit#2wasscheduledtobesourcetested.Mr.AndersonestimatedthatitwouldnotbeuntilFall2011beforesourcetestresultswouldbeavailable,presumingthatsourcetestingwouldbeginatsometimeduringtheSimmerof2011‘Turbines—COhourlyemissionsrateinlb/hrWehaveaddedaCOemissionlimit(afterademonstrationperiod)of1.5pprvd

@15%02foreachgasturbinewhenoperatingwithoutductfiring.Thecommensurateemissionlimitinpoundsperhour(lb/hr)wascalculatedtobe6.27lb/hrbasedonthefollowingapplicationinformationandtheF-Factormethodology(40CFRPart60,AppendixA,Method19):

jGiven:Turbine,MMBtu!hr(HFIV),withoutductburner=1,856.3MMBtu/hrConcentrationlimit=1.5ppmCO

@15%02byvolume(dry)(or1.5ppmvdCO

@15%02)Conversionfactorandreferences:Molecularweight(MWt),NO246Ib/Ib-molMolecularweight(MWt),CO28lb/lb-mol JConvert,ppmN0(forNO2)1.194xIOE-07lb/scfN0F-Factor(naturalgas)8,710dscV’MMBtuCalculationmethodology:.(COppmvd)‘(F-factor)*(Convert)*(COMWt/NO2MWt)*(209/(20.9-%02)) [=1lb/MMBtu*(Turbine,MMBtuIhr) [=1lb/hrwhere(1.5)*(8,710)*(1.194xIOE-07)*(28/46)*(20.9/(20.9-15))*(1,856.3)=-6.27lb/hrofCOTurbineslimitsforstartupandshutdowndurationIreviewedthePSDpermitsrecentlyissuedbyRegion9fornaturalgas-firedcombinedcyclepowerplantssimilartotheAEPtoidentifythedurationofstartupandshutdownlimits(inminutesorhours).Otherpermitsincludedseparatestartupdurationtimesdependingonwhetherthestartupwascharacterizedasacold,warm,orhotstart;severalplantshadashutdownlimitof30minutes.Afterreviewofthisinformationandfollow-upwiththepermitapplicant,IconcludedthattheColusaGeneratingStationwastheprojectmostsimilartotheAvênalEnergyProject.ThestartupdurationintheO52BEPAAVENAL-MEMOTOFILE_PERMIT REVNSR.DOC

# Final Permit Requirements— 

# Selected Background

Information

Page

3 PSD permit

issued

by EPA Region

9 for Colusa Generating

Station

was limited

to 270 minutes

(or 4.50 hours);

the shutdown

duration

was limited

to

30 minutes

(or 0.50 hour).=== 

# END===O526EPAAVENAL-MEMOTOFILE_PERMIT 

# REVNSR.DOC



# -3



# r11Vt;t>’%33 

# $Lk4,;;‘-$



# 7,’:---‘-_:E’—3?



# rItA*3ttflj-4 

# 0 I----33-ae2n‘%WttVZ3**3tt—



# -.3E-3* 

# *--A,,



# :E---------;--, 

# --

-

-,-- 

# —--•-- 

# I