Aluminum Production
Monitoring Checklist
                                 United States
                                 Environmsntal Protection
                                 Agency
Final Rule: Mandatory Reporting of Greenhouse Gases
What Must Be Monitored?
                       Measure these parameters annually
                           (unless otherwise noted)...

Perfluoromethane (CF4) Emissions from Each Prebake and Sederberg Cell

If estimating CF4 emissions from anode effect duration:	
  D    Anode effect minutes per cell-day
       (monthly) (AE-Mins/cell-day)


If estimating CF4 Emissions from overvoltage:
     Aluminum production
     (monthly) (metric tons)
  l_.    Aluminum production
       (monthly) (metric tons)
       Potline overvoltage (mV/cell day)
D    Anode effect overvoltage factor (kg
     CFVmetric ton Al)/(mV/cell day)

d    Current efficiency (%)
Process COi Emissions from Anode Consumption During Electrolysis for Prebake Cells, If
Not Using a CEMS
       Net annual prebaked anode
       consumption per metric ton Al
       (metric tons C/metric tons Al)

       Annual Al production (metric tons)
     Sulfur content in baked anode
     (percent weight)
     Ash content in baked anode
     (percent weight)
Aluminum Production Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
Page I of 2
                       40CFR98, subpartF
                           September 2009

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Process COi Emissions from Anode Consumption During Electrolysis for Sederberg Cells,
IfNotUsingaCEMS
        Paste consumption
        (metric ton/metric ton Al)

        Annual Al production
        (metric tons)

        Emissions of cyclohexane soluble
        matter (kg/metric ton Al)

        Binder content of paste (percent weight)
        Sulfur content of pitch (percent weight)
Ash content of pitch
(percent weight)

Hydrogen content of pitch
(percent weight)

Sulfur content in calcined coke
(percent weight)

Ash content in calcined coke
(percent weight)

Carbon in skimmed dust from S0derberg
cells (metric ton C/metric ton Al)
COi Emissions from Anode Baking of Prebake Cells - Pitch Volatiles Consumption
        Initial weight of green anodes (metric
        tons)

        Annual hydrogen content in green
        anodes (metric tons)
Annual baked anode production (metric
tons)

Annual waste tar collected (metric tons)
     Emissions from Anode Baking of Prebake Cells - Bake Furnace Packing Material
        Annual packing coke consumption
        (metric tons/metric ton baked anode)

        Annual baked anode production (metric
        tons)
 Sulfur content in packing coke (percent
 weight)

 Ash content in packing coke (percent
 weight)
Other
  n    Smelter specific slope coefficients (or
        overvoltage emission factors), if
        applicable

Note: Sources may use either smelter-specific values from annual measurements of parameters
needed to complete the equations in §98.63 (e.g., sulfur, ash, and hydrogen contents, and carbon in
skimmed dust from Soderberg cells) or the default values shown in Table F-2 of subpart F.

See also the information sheet for Aluminum Production (EPA-430-F-09-029R) at:
www.epa.gov/climatechange/emissions/downloads/infosheets/aluminumproduction.pdf
Aluminum Production Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
Page 2 of 2
                     40 CFR 98, subpart F
                         September 2009

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