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REGULATION FOR THE MANDATORY REPORTING OF GREENHOUSE GAS EMISSIONS - page 65 / 137

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65 / 137

  • (3)

    Process Vents

    • (A)

      The operator shall calculate and report process emissions of CO2, CH4, and N2O from process vents using the method shown below. Process emissions calculated and reported using other methods specified in this regulation shall not be calculated and reported here. n

Ex = VR * Fx * MWx/MVC * VT * 0.001 1 Where: Ex = emissions of x (metric tonnes/yr) (x = CO2, N2O, CH4) VR = vent rate (scf/unit time) Fx = molar fraction of x in vent gas stream MWx = molecular weight of x (kg/kg-mole) MVC = molar volume conversion (849.5 scf/kg-mole for STP of 20°C and 1 atmosphere or 836 scf/kg-mole for STP of 60°F, and 1 atmosphere) VT = time duration of venting n = number of venting events 0.001 = conversion factor – kg to metric tonnes

  • (4)

    Asphalt Production

    • (A)

      The operator shall calculate and report CO2 and CH4 emissions resulting from asphalt blowing activities (where these emissions are not reported to the local AQMD/APCD and subsequently reported as directed in section 95113(d)) using the method specified below:

CH4 = (MA * EF * MWCH4

/MVC)(1 – DE) * 0.001

Where:

CH4 = CH4 emissions (metric tonnes/yr) MA = mass of asphalt blown (103 bbl/yr) EF = emission factor (EF = 2,555 scf CH4/103 bbl) MWCH4 = CH4 molecular weight (16.04 kg/kg-mole) MVC = molar volume conversion factor (849.5 scf/kg- mole, for STP of 20°C and 1 atmosphere) DE = control measure destruction efficiency (DE = 98% expressed as 0.98) 0.001 = conversion factor – kg to metric tonnes

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