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TABLE 1 POTENTIAL TO EMIT SOURCE ESTIMATES FOR 2 INTERNAL COMBUSTION(IC)ENGINES-100%LOAD FOOTHILL LANDFILL LINDEN,CALIFORNIA Variables: MODEL INPUT VARIABLES: POTENTIAL TO EMIT Methane Concentration 50.0% Genset horsepower 3,012 hp Fuel Value 319 Btulcf Landfill Gas Collection Rate(single IC Engine) 942 SCFM Max LFG Exhaust Rate from Engine° 5,565 SCFM Oxygen Content in Exhaust10 % Maximum Availability of Engine Annualf 100.0 % Criteria pollutant emission factors used for IC Engines Pollutant Emission factor Data Source NMOCWVOCs:20 ppm @ 3% as hexane(outlet) BACT/NSPS CO 1.8 g/bhp-hr Ox Mountain levels NO, 0.15 gtbhp-hr Ox Mountain levels SO, 150 ppmv BACT PM,dPM 0.1 g/bhp-hr BACT Notes: 'List of hazardous air pollutants was from Title III Clean Air Act Amendments,1990,and include compounds found in landfill gas,as determined from a list in AP-42 Tables 2.4-1("Default Concentrations for Landfill Gas Constituents,11198'). 2 Average concentration of HAPS found in LFG were taken from'Waste Industry Air Coalition Comparison of Recent Landfill Gas Analyses with Historic AP-42 Values"(+)if site specific data(')were unavailable. 'Based on a maximum flow rate into the IC Engine of 942 schen @ 50%methane at 319 BTU/scf. 4 Values based on AP-42,Table 2.4-3:93%for halogenated species,and 86.1%for non-halogenated species. For xylenes,98%control efficiency is used,since xylenes is considered the compound that is easier to destroy among NMOCs. °Co ncentration of HCI is based on AP-42 Section 2.4.4.2(11/98). °VOC emissions are equal to NMOL emissions. 7 Reduced Sulfur Compound Concentration,per SCAOMD Rule 431.1. °Maximum Availability of IC engines based on plant-wide annual limit. °5,565 sch LFG exhaust rate based on 10%oxygen per manufacturer. ($021 Emissions from the Engine(ton/yr]=(Molecular Weight of SO2/Molecular Weight of H2S)'((Molewlar Weight of H2S[g/mo1])'(ConcomnnJon of Compound[ppm yl,000,000) '(LFG Flow to Engine[cfm])'(60 miNhr)-(24 hr/day)•(365 day/year)'(1 ton20D01b)'(l lb/453.6gr(1 mol/24.04L @ STP)'(28.321J1 of)) Emisemns from the Engine[ton/yr]=((Molecular Weight of NMOC as hexane(g/mol])'(Concentation of Compo-di ppmvV1,000,000) '(Exhaust rate from Engine[cfm])'(60 min/hr)'(24 hr/day)'(365 day/year)-(lion200011b)'(111,/453.6g)'(1 mol/24.041-@ STP)'(28.32L/1 of))