US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 418 — FERTILIZER MANUFACTURING POINT SOURCE CATEGORYSubpart F — Ammonium Sulfate Production Subcategory418.6140 C.F.R. § 418.61Specialized definitions.Last amended: 2016Year: 2026Length: 31 wordsOfficial source Cite as 40 C.F.R. § 418.61 (2026)For the purpose of this subpart: (a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 shall apply to this subpart. (b) [Reserved]Previous40 C.F.R. § 418.60Next40 C.F.R. § 418.62