US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 98 — MANDATORY GREENHOUSE GAS REPORTINGSubpart XX — Calcium Carbide Production98.50040 C.F.R. § 98.500Definition of the source category.Last amended: 2025Year: 2026Length: 14 wordsOfficial source Cite as 40 C.F.R. § 98.500 (2026)The calcium carbide production source category consists of any facility that produces calcium carbide.Next40 C.F.R. § 98.501