40 C.F.R. § 98 app Table NN-1 to Subpart NN of Part 98

Current through May 31, 2024

Appendix Table NN-1 to Subpart NN of Part 98 - Default Factors for Calculation Methodology 1 of This Subpart

Fuel	Default higher heating value1	Default CO2 emission factor (kg CO2/MMBtu)
Natural Gas	1.026 MMBtu/Mscf	53.06
Propane	3.84 MMBtu/bbl	62.87
Normal butane	4.34 MMBtu/bbl	64.77
Ethane	2.85 MMBtu/bbl	59.60
Isobutane	4.16 MMBtu/bbl	64.94
Pentanes plus	4.62 MMBtu/bbl	70.02

¹ Conditions for higher heating values presented in MMBtu/bbl are 60 °F and saturation pressure.

40 C.F.R. 98 app Table NN-1 to Subpart NN of Part 98

78 FR 71977, Nov. 29, 2013