['Air Programs']

['Greenhouse Gases']

09/24/2025

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Table 1 to Subpart ZZ of Part 98—CO 2 Emission Factors for Carbonate-Based Raw Materials

...

Table 1 to Subpart ZZ of Part 98—CO 2 Emission Factors for Carbonate-Based Raw Materials

RegSense Greenhouse Gases CFR Regulations Environmental Protection Agency (EPA)Focus Area USA English Air Programs CFR Appendix

Table 1 to Subpart ZZ of Part 98—CO₂ Emission Factors for Carbonate-Based Raw Materials
Carbonate	Mineral name(s)	CO₂ emission factor ^a
^a Emission factors are in units of metric tons of CO ₂ emitted per metric ton of carbonate-based material.
^b Ankerite emission factors are based on a formula weight range that assumes Fe, Mg, and Mn are present in amounts of at least 1.0 percent.
BaCO₃	Witherite, Barium carbonate	0.223
CaCO₃	Limestone, Calcium Carbonate, Calcite, Aragonite	0.440
Ca(Fe,Mg,Mn)(CO₃)₂	Ankerite^b	0.408-0.476
CaMg(CO₃)₂	Dolomite	0.477
FeCO₃	Siderite	0.380
K₂ CO₃	Potassium carbonate	0.318
Li₂ CO₃	Lithium carbonate	0.596
MgCO₃	Magnesite	0.522
MnCO₃	Rhodochrosite	0.383
Na₂ CO₃	Sodium carbonate, Soda ash	0.415
SrCO₃	Strontium carbonate, Strontianite	0.298

[89 FR 31948, Apr. 25, 2024]

['Air Programs']

['Greenhouse Gases']

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