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 Code of Federal Regulations (Last Updated: May 6, 2024)
 Title 40 - Protection of Environment
 Chapter I - Environmental Protection Agency
 SubChapter C - Air Programs
 Part 98 - Mandatory Greenhouse Gas Reporting
 Subpart F - Aluminum Production

  Table F-2 to Subpart F of Part 98 - Default Data Sources for Parameters Used for CO2 Emissions

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  • Table F-2 to Subpart F of Part 98 - Default Data Sources for Parameters Used for CO2 Emissions

    Parameter Data source
    CO2 Emissions from Prebake Cells (CWPB and SWPB)
    MP: metal production (metric tons Al) Individual facility records.
    NAC: net annual prebaked anode consumption per metric ton Al (metric tons C/metric tons Al) Individual facility records.
    Sa: sulfur content in baked anode (percent weight) 2.0.
    Asha: ash content in baked anode (percent weight) 0.4.
    CO2 Emissions From Pitch Volatiles Combustion (CWPB and SWPB)
    MP: metal production (metric tons Al) Individual facility records.
    PC: annual paste consumption (metric ton/metric ton Al) Individual facility records.
    CSM: annual emissions of cyclohexane soluble matter (kg/metric ton Al) HSS: 4.0.
    VSS: 0.5.
    BC: binder content of paste (percent weight) Dry Paste: 24.
    Wet Paste: 27.
    Sp: sulfur content of pitch (percent weight) 0.6.
    Ashp: ash content of pitch (percent weight) 0.2.
    Hp: hydrogen content of pitch (percent weight) 3.3.
    Sc: sulfur content in calcined coke (percent weight) 1.9.
    Ashc: ash content in calcined coke (percent weight) 0.2.
    CD: carbon in skimmed dust from Søderberg cells (metric ton C/metric ton Al) 0.01.
    CO2 Emissions from Pitch Volatiles Combustion (VSS and HSS)
    GA: initial weight of green anodes (metric tons) Individual facility records.
    Hw: annual hydrogen content in green anodes (metric tons) 0.005 × GA.
    BA: annual baked anode production (metric tons) Individual facility records.
    WT: annual waste tar collected (metric tons) (a) 0.005 × GA.
    (a) Riedhammer furnaces (b) insignificant.
    (b) all other furnaces
    CO2 Emissions From Bake Furnace Packing Materials (CWPB and SWPB)
    PCC: annual packing coke consumption (metric tons/metric ton baked anode) 0.015.
    BA: annual baked anode production (metric tons) Individual facility records.
    Spc: sulfur content in packing coke (percent weight) 2.
    Ashpc: ash content in packing coke (percent weight) 2.5.

    [74 FR 56374, Oct. 30, 2009, as amended at 75 FR 79156, Dec. 17, 2010]