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Table NN-2 to Subpart NN of Part 98—Default Factors for Calculation Methodology 1 of This Subpart
FuelUnitDefault CO2 emission factor (MT CO2/Unit)1
1Conditions for emission value presented in MT CO2/bbl are 60°F and saturation pressure.
Natural GasMscf0.0544
PropaneBarrel0.241
Normal butaneBarrel0.281
EthaneBarrel0.170
IsobutaneBarrel0.270
Pentanes plusBarrel0.324

[74 FR 56502, Oct. 30, 2009; 75 FR 66479, Oct. 28, 2010; 78 FR 71977, Nov. 29, 2013; 81 FR 89270, Dec. 9, 2016]

['Air Programs']
['Greenhouse Gases']
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