US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 98 — MANDATORY GREENHOUSE GAS REPORTINGSubpart U — Miscellaneous Uses of Carbonate98.21840 C.F.R. § 98.218Definitions.Last amended: 2017Year: 2026Length: 22 wordsOfficial source Cite as 40 C.F.R. § 98.218 (2026)All terms used in this subpart have the same meaning given in the Clean Air Act and subpart A of this part.Previous40 C.F.R. § 98.217Next40 C.F.R. Table U-1 to Subpart U of Part 98