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TABLE 2 POTENTIAL TO EMIT EMISSION SOURCE ESTIMATES FOR ENCLOSED LANDFILL FLARE FOOTHILL LANDFILL LINDEN,CALIFORNIA Notes: (a)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,11/98"). (b)Average concentration of HAPS found in LFG were taken from'VVaste Industry Air Coalition Comparison of Recent Landfill Gas Analyses with Historic AP-42 Values"if site specific data(*)were unavailable. (c)Pollutant emission rate based on estimated maximum rate that control device is equipped to handle. Flare has a maximum rated capacity of 2,267 scfm. (d)Values taken from AP-42 Table 2.4-3("Control Efficiencies for LFG ConsituenW) (e)Concentration of HCI is based on AP-42 Section 2.4.4.2.(11/98). (f)Concentration of Mercury based on EPA AP-42 Section 2.4 Table 2.4-1(11/98). (g)VOCs assumed to equal NMOCs. (h)Based on outlet concentration of 20 ppmv as hexane(BACT/NSPS)and an estimated maximum exhaust rate of 2,267 SCFM. (i)Based on exhaust flow from manufacturer specification. Variables: MODEL INPUT VARIABLES: Max LFG Collection Rate to Flare(c)@ 47%methane 200 SCFM Max LFG Collection Rate to Flare @ 50%methane 188 SCFM Max LFG Exhaust Rate from Flare(1) 2,267 SCFM Exhaust Oxygen per Manufacturer 3 Flare Rating 5.64 MMBtu/hr Criteria pollutant emission factors used for flare: Pollutant Emission Factor Data Source NMOCsIVOCs 20 ppmv outlet @3%02 as hexane BACT/NSPS CO 0.201b/MMBtu ManufacturersGuarantee/BACT S02 150ppmv BACT NO, 0.041 IWMMBtu Manufacturer's Guarantee/BACT PM,o 0.051b/MMBtu Manufacturers Guarantee with 50% margin of safety;Chicopee testing (SO2) Emissions from the Flare[ton/yr]=(Molecular Weight of S021 Molecular Weight of H2S)*((Molecular Weight of H2S[g/mol])*(Concentration of Compound[ppmv]/1,000,000) *(LFG Flow to Flare[cfm])*(60 min/hr)*(24 hr/day)*(365 day/year)*(lton/20001b)*(ilb/453.6g)*(1 moV24.04L @ STP)*(28.321J1cf)) (VOC) Emissions from the Flare[ton/yr]=((Molecular Weight of NMOC as hexane[g/mol])*(Concentration of Compound[ppmvyl,000,000) *(Exhaust rate from Flare[cfm])*(60 min/hr)*(24 hr/day)*(365 day/year)*(lton/20001b)*(t IW453.6g)*(1 mol/24.04L @ STP)*(28.32U1 co)