Section, [act July 14, 1955, ch. 360], title III, § 316, formerly § 13, as added Dec. 17, 1963, [Pub. L. 88–206, § 1], [77 Stat. 401]; renumbered title III, § 306, and amended Oct. 20, 1965, [Pub. L. 89–272, title I, § 101(4)], (6), (7), [79 Stat. 992]; Oct. 15, 1966, [Pub. L. 89–675, § 2(a)], [80 Stat. 954]; renumbered § 309 and amended Nov. 21, 1967, [Pub. L. 90–148, § 2], [81 Stat. 506]; renumbered § 316 and amended Dec. 31, 1970, [Pub. L. 91–604], §§ 12(a), 13(b), [84 Stat. 1705], 1709; Apr. 9, 1973, [Pub. L. 93–15, § 1(c)], [87 Stat. 11]; June 22, 1974, [Pub. L. 93–319, § 13(c)], [88 Stat. 265], authorized appropriations for air pollution control. See [section 7626 of this title].
