Q74. If a unit that combusts only fossil fuels has a CEMS for CO2 and uses Tier 4, must CO2 be reported by fuel type?
Note: The Cal e-GGRT help system includes general instruction on using the California GHG reporting tool. However, the help system may not explain differences between California and U.S. EPA reporting requirements. Please refer to the ARB reporting website for California-specific reporting requirements and additional help.

No. Reporting CO2 emissions by specific type of fossil fuel (e.g., coal, oil, gas, etc.) is not required. (See 98.36(b)(7)(i)).

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