US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 98 — MANDATORY GREENHOUSE GAS REPORTINGSubpart PP — Suppliers of Carbon Dioxide98.42140 C.F.R. § 98.421Reporting threshold.Last amended: 2017Year: 2026Length: 30 wordsOfficial source Cite as 40 C.F.R. § 98.421 (2026)Any supplier of CO 2 who meets the requirements of § 98.2(a)(4) of subpart A of this part must report the mass of CO 2 captured, extracted, imported, or exported.Cross-references to the CFR98.2Previous40 C.F.R. § 98.420Next40 C.F.R. § 98.422