US lawFederal (United States)Session lawPub. L. 101-549 — To amend the Clean Air Act to provide for attainment and maintenance of health protective national ambient air quality standards, and for other purposes.601Pub. L. 101-549, tit. VI, sec. 601PART B REPEAL.EnactedYear: 1990Length: 25 wordsOfficial source SEC. 601. PART B REPEAL. Part B of title I of the Clean Air Act entitled “Ozone Protection”, sections 150 through 159, is hereby repealed.PreviousPub. L. 101-549, tit. V, sec. 501NextPub. L. 101-549, tit. VI, sec. 602