1990—Subsec. (g). Pub. L. 101–637 added subsec. (g).
1988—Subsec. (a)(4), (5). Pub. L. 100–368 added pars. (4) and (5).
Amendment by Pub. L. 101–637 effective upon expiration of 12-month period following
In exercising any authority under this chapter in connection with amendment made by Pub. L. 101–637, Administrator of Environmental Protection Agency not, for purposes of section 653(b)(1) of Title 29, Labor, to be considered to be exercising statutory authority to prescribe or enforce standards or regulations affecting occupational safety and health, see section 15(b) of Pub. L. 101–637, set out as a note under section 2646 of this title.