The National Environmental Policy Act, referred to in subsec. (c), probably means the National Environmental Policy Act of 1969, Pub. L. 91–190, Jan. 1, 1970, 83 Stat. 852, which is classified generally to chapter 55 (§ 4321 et seq.) of this title. For complete classification of this Act to the Code, see Short Title note set out under section 4321 of this title and Tables.

A prior section 316 of act July 14, 1955, ch. 360, title III, formerly § 13, as added Dec. 17, 1963, Pub. L. 88–206, § 1, 77 Stat. 401; renumbered § 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, prior to repeal by section 306 of Pub. L. 95–95. See section 7626 of this title.

Section effective Aug. 7, 1977, except as otherwise expressly provided, see section 406(d) of Pub. L. 95–95, set out as an Effective Date of 1977 Amendment note under section 7401 of this title.