WPC Yڛ0*djzgűI_] j~o:^0۷Y` [9< ƁLf7,Q%I%{7 <\$̊ĊRÞeϮb8huMG>XA>f'W^,'ꉦy$]ERy7D~8m#BgzGP2f3):6zpl80EfPEs%QTGR tZy2בdnˈPF^[p-uOSɻ]pa^hd?@G& Ay^0c>dV>Yu={/@@#] 9=x W? .c4rkQR/{sF#!UN %A 0(G^ ow@{4 m 1 1u~ 0.c 1V\\ADEQ\5023t_hp5n.prt.phx.adeq,,,,0(9 Z6Times New Roman RegularX($Ow* U{EEDE2(*:i+003|xU(5hCEKQW]cioAutoList11.1.1.1.1.1.1.1.3#37=CIQYag1.a.i.(1)(a)(i)1)a)(;$25h  0  .3  0  (EhCEKQW]cioAutoList21.1.1.1.1.1.1.1. !  _TO:0  0` (#(#ColleenDelaney,CoChair,MarketTradingForum` (#` (# 0  0` (#(#Ira_Domsky_,CoChair,MarketTradingForum ` (#` (# FROM:0 ` MikeGeorge,CoChair,EmissionInventoryWorkGroupt` (#` (# DATE:0 ` March23,2001L ` (#` (# RE:0  0` (#(#Measurementestimationmethods$ t` (#` (# Attachedaretheactualdatasubmittedbythestateswhorespondedtoourrequestforunitspecificinformationastohowemissionsarecharacterized.ThosestatesincludeUtah,Colorado,Arizona,Wyoming,andOregon.These_submittals_Ԁaccountfor21ofthe47sourcesofinteresttoEPA.Thismemotriestosummarizethatinformation.Ingeneral,thefollowingseemstoapply:L 5h(3 L      25h  1  .3  0    BoilersConsistentmethodsarenotused,rangingfromemissionfactortosourceteststo   _CEM_.. D݌ (#(# Ќ        l25h  2  .3  0    DryersEmissionfactorsaregenerallyused. l݌p(#(# Ќ        `25h  3  .3  0    Furnaces_CEMs_Ԁareused. `݌\(#(# Ќ        `25h  4  .3  0    RegeneratorsEverythingfromemissionfactorsto_CEM_Ԁareused. `݌H(#(# Ќ        25h  5  .3  0    ClausEmissionfactorsareused. ݌4(#(# Ќ        p 25h  6  .3  0    ClinkersEmissionfactorsareused. p ݌ p(#(# Ќ        \ 25h  7  .3  0    FlaresEmissionsarederivedusingmassbalance. \ ݌ \(#(# Ќ        T 25h  8  .3  0    KilnsEmissionfactorsareusedforSO2. T  ݌H(#(# Ќ        E 25h  9  .3  0    Sulfurrecoveryunits_CEMs_Ԁareused. E p ݌4(#(# Ќ        R 25h  10  .3  0    Incinerators_CEMs_Ԁandsourcetestsaremostcommon. R } ݌ (#(# Ќ        o25h  11  .3  0    AfterburnersSourcetestsareused. o݌ (#(# Ќ        \25h  12  .3  0    Sulfuricacidplants_CEMs_Ԁandsourcetestsareused. \݌(#(# Ќ  Severaloverarchingkeypointsshouldbenoted: L Eh(( L      2Eh  1  .3  0    Emissionfactorsarenotnecessarilyabadthingdependingon_whatthe_Ԁqualityoftheprocess X  data. B݌ (#(# Ќ        w2Eh  2  .3  0    _CEMs_Ԁarenotallcreatedequal,suchthat_CEM_Ԁmaynotalwaysbethemostaccurateor 0"  mostconsistentmethodofcharacterizingemissions. w݌ (#(# Ќ        2Eh  3  .3  0    _NSPS_ԀcreatesconsistencyforseveralsourcesmuchasAcidRaindoesforutilities. =݌$X"(#(# Ќ  Itshouldbenotedthatwedidnottrytomodifythefacilitylevelsummaryfrom1999giventheextenttowhichdatahaveimprovedsincethatwascreated.Wethinkthatitstandsasapointintimeeffortthatwouldbequitedifficulttoupdateatthistime.Nonetheless,itprovidesusefulinsightintotherelativeusageofeachapproach.Wehopethismemofillssomeofthemoredetailedgapsastothisquestion.IfyouorEPAhaveanyquestions,pleaseletusknow.cCc:cc:0  EmissionsFourmrum&_EI_ԀWorkGroup