US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 424 — FERROALLOY MANUFACTURING POINT SOURCE CATEGORYSubpart E — Other Calcium Carbide Furnaces Subcategory424.5140 C.F.R. § 424.51Specialized definitions.Last amended: 2016Year: 2026Length: 31 wordsOfficial source Cite as 40 C.F.R. § 424.51 (2026)For the purpose of this subpart: (a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.Previous40 C.F.R. § 424.50Next40 C.F.R. § 424.52