US lawFederal (United States)Statute compilation4Pub. L. 93-319, sec. 4 (as amended)IMPLEMENTATION PLAN REVISIONS.Year: 2004Length: 15 wordsOfficial source SEC. 4. IMPLEMENTATION PLAN REVISIONS. [This section amended section 110 of the Clean Air Act.]PreviousPub. L. 93-262, sec. 4 (as amended)NextPub. L. 93-357, sec. 4 (as amended)