Court of Appeals for the Seventh Circuit December 13, 1983, No. 82-2608 (Bethlehem Steel Corp. v. United States Environmental Protection Agency)

POSNER, Circuit Judge.

Section 109 of the Clean Air Act, as amended in 1970, required the EPA to establish air quality standards, and section 110 required the states to adopt implementation plans for attaining those standards. See 42 U.S.C. §§ 7409, 7410; Train v. Natural Resources Defense Council, 421 U.S. 60, 64-67, 95 S.Ct. 1470, 1474-1476, 43 L.Ed.2d 731 (1975).