In subsec. (a)(6), “chapter 51 of title 49” substituted for “the Hazardous Materials Transportation Act [49 App. U.S.C. 1801 et seq.]” on authority of Pub. L. 103–272, § 6(b), July 5, 1994, 108 Stat. 1378, the first section of which enacted subtitles II, III, and V to X of Title 49, Transportation.

1988—Subsec. (a)(5). Pub. L. 100–418 substituted “National Institute of Standards and Technology” for “National Bureau of Standards”.

1984—Subsec. (c). Pub. L. 98–616 added subsec. (c).

1980—Subsec. (a)(6). Pub. L. 96–482 added par. (6).

For transfer of certain enforcement functions of Administrator or other official of Environmental Protection Agency under this chapter to Federal Inspector, Office of Federal Inspector for the Alaska Natural Gas Transportation System, and subsequent transfer to Secretary of Energy, then to Federal Coordinator for Alaska Natural Gas Transportation Projects, see note set out under section 6903 of this title.