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TABLE 2 <br />POTENTIAL TO EMIT EMISSION SOURCE ESTIMATES FOR WASTE GAS FLARE <br />FORWARD LANDFILL <br />MANTECA, CALIFORNIA <br />Notes: <br />(a) List of hazardous air pollutants was from Title III Clean Air Act Amendments, 1990, and include compounds found in landfill gas, as determined <br />from a list in AP -12 Tables 2.4-1 ("Default Concentrations for Landfill Gas Constituents, 11/98"). <br />(b) Average concentrations of HAPs were taken from WIAC data. <br />(c) Pollutant emission rate based on estimated maximum rate that control device is expected to handle. <br />(d) Values taken from APA2 Table 2.4-3 ("Control Efficiencies for LFG Consituents") <br />(e) Concentration of HCl is based on AP -42 Section 2.4.4.2. (11/98) <br />(f) Concentration of Mercury based on EPA AP -42 Section 2.4 Table 2.4-1 (11/98). <br />(g) VOCs assumed to equal NMOCs <br />(h) Based on outlet concentration of 20 ppmv as hexane (BACT/NSPS) and an estimated maximum exhaust rate of 2,267 SCFM <br />(i) Based on exhaust flow from manufacturer specification <br />Variables: <br />MODEL INPUT VARIABLES: <br />Max LFG Collection Rate to Flare (c) @ 47°% methane 200 SCFM <br />Max LFG Collection Rate to Flare @ 50% methane 188 SCFM <br />Max LFG Exhaust Rate from Flare (i) 2,267 SCFM <br />® Exhaust Oxygen per Manufacturer 3% <br />Flare Rating 5.64 MMBtu/hr <br />(VOC) <br />Emissions from the Flare [ton/yr]=((Molecular Weight of NMOC as hexane[g/mol])'(Concentration of Compound[ppmv]/1,000,000) <br />*(Exhaust rate from Flare [cfm])'(60 min/hr)' (24 hr/day) ` (365 day/year)'(tton/20001b)'(llb/453.6g)'(1 mol/24.04L @ STP)•(28.32IJ1c9) <br />u <br />u <br />0 <br />[ I <br />Criteria pollutant emission factors used for flare: <br />Pollutant Emission Factor <br />Data Source <br />NMOCsA/OCs 20 ppmv outlet @3% 02 as hexane <br />BACT/NSPS <br />CO 0.20 Ib/MMBtu <br />Manufacturer's Guarantee/BACT <br />SO2 150ppmv <br />BACT <br />NO, 0.041 Ib/MMBtu <br />Manufacturer's Guarantee/BACT <br />PMI0 0.2 Ib/MMBtu <br />Field Testing by Ameresco <br />miiss <br />Emissions from the Flare [ton/yr]=(Molecular Weight of SO2 / Molecular Weight of H2S)'((Molecular Weight of H2S[g/mol])`(Concentration of Compound[ppmv]/1,000,000) <br />'(LFG Flow to Flare [cfm])'(60 min/hr)' (24 hr/day) ` (365 day/year)`(lion/20001b)'(11b/453.69)'(lmoV24.04L @ STP)'(28.32L/1 c0) <br />(VOC) <br />Emissions from the Flare [ton/yr]=((Molecular Weight of NMOC as hexane[g/mol])'(Concentration of Compound[ppmv]/1,000,000) <br />*(Exhaust rate from Flare [cfm])'(60 min/hr)' (24 hr/day) ` (365 day/year)'(tton/20001b)'(llb/453.6g)'(1 mol/24.04L @ STP)•(28.32IJ1c9) <br />u <br />u <br />0 <br />[ I <br />