EEI - Environment and Generating

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1、COMMENTSONNATIONALEMISSIONSSTANDARDSFORHAZARDOUSAIRPOLLUTANTSFROMCOAL-ANDOIL-FIREDELECTRICUTILITYSTEAMGENERATINGUNITSANDSTANDARDSOFPERFORMANCEFORFOSSIL-FUEL-FIREDELECTRICUTILITY,INDUSTRIAL-COMMERCIAL-INSTITUTIONAL,ANDSMALLINDUSTRIAL-COMMERCIAL-INSTITUTIONALSTEAMGENERATINGUNITSDocketNos.EPA-HQ-OAR-2

2、009-0234;EPA-HQ-OAR-2011-0044August3,2011TableofContentsI.ExecutiveSummary................................................................................................................2II.EPAShouldDesignateFilterablePMAndNotTotalPMAsASurrogateForTheNon-mercuryMetalsStandard.......................

3、...............................................................................11A.FilterablePMIsanAppropriateSurrogateforNon-mercuryMetals..............................13B.TotalPMShouldNotBeUsedduetoConcernswithMeasuringCondensablePMandProblemswithComplianceMonitoring..............................

4、.............................................13C.EPAMustReviseOtherPMRequirements....................................................................141.EPA’srequirementofunit-specificoperatinglimitsisinconsistentwiththeCAAstatutoryprovisionthataMACTstandardmustbethe“average”oftop-achievingunits...

5、.........................................................................................................................142.EPAfailedtoaddresscumulativeeffectsofusingmultiplepollutioncontroldevicesindeterminingMACTlevelsapplicabletoPMlevels..................................15III.DSIIsAUsefulTechno

6、logyButIsNotAViableOptionForAllCoalsForComplianceWithTheAcidGasStandard,AndEPA’sOverlyOptimisticAnalysisOfDSISignificantlyUnderestimatesTheTimeNeededForComplianceAsWellAsTheCostOfCompliance..............................................................................................................

7、........16A.DSIIsanImportant,butNotUniversal,ComplianceOptionduetoOperationalImpactsandCostFactorsthatEPAHasNotTakenintoConsideration..........................16B.TheUseofDSICouldImpactBeneficialUseofFlyAsh