US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 123 — STATE PROGRAM REQUIREMENTSSubpart A — General123.240 C.F.R. § 123.2Definitions.Last amended: 2016Year: 2026Length: 18 wordsOfficial source Cite as 40 C.F.R. § 123.2 (2026)The definitions in part 122 apply to all subparts of this part. [63 FR 45122, Aug. 24, 1998]Previous40 C.F.R. § 123.1Next40 C.F.R. § 123.3