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REGULATION FOR THE MANDATORY REPORTING OF GREENHOUSE GAS EMISSIONS - page 66 / 137

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CO2 = (MA * EF * MWCH4

/MVC) * DE * 2.743 * 0.001

Where: CO2 = CO2 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) 2.743 = CH4 to CO2 conversion factor 0.001 = conversion factor – kg to metric tonnes

  • (5)

    Sulfur Recovery

    • (A)

      The Operator shall calculate and report CO2 process emissions from sulfur recovery units (SRU) using the methods specified below:

CO2 = FR * MWCO2

/MVC * MF * 0.001

Where:

CO2 = emissions of CO2 (metric tonnes/yr) FR = volumetric flow rate of acid gas to SRU (scf/year) MWCO2 = molecular weight of CO2 (44 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, fo r STP of 60°F, and 1 atmosphere) MF = molecular fraction (%) of CO2 in sour gas (default MF = 20% expressed as 0.20) 0.001 = conversion factor – kg to metric tonnes

(B) As an alternative to using the default MF value, the operator may elect to calculate CO2 emissions using an ARB approved, source specific molecular fraction of CO2 in the sour gas, derived from source tests conducted at least once per calendar year under the supervision of ARB or the local air pollution control district or air quality management district. Upon approval of a source test plan by ARB, the source test procedures in that plan shall be repeated in subsequent years to u p d a t e t h e s o u r c e s p e c i f i c C O 2 m o l e c u l a r f r a c t i o n s a n n u a l l y . I n t h e a b s e n c e o f s o u r c e s p e c i f i c C O 2 m o l e c u l a r f r a c t i o n s a p p r o v e d b y A R the operator shall use the default value provided in section 95113(b)(5)(A). B ,

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