Approval of the State programs, pursuant to section
1253
(b) of this title, promulgation of Federal programs, pursuant to section
1254 of this title, and implementation of the Federal lands programs, pursuant to section
1273 of this title, shall not constitute a major action within the meaning of section 102(2)(C) of the National Environmental Policy Act of 1969 (
42 U.S.C.
4332). Adoption of regulations under section
1251
(b) of this title shall constitute a major action within the meaning of section 102(2)(C) of the National Environmental Policy Act of 1969 (
42 U.S.C.
4332).