Court of Appeals for the Seventh Circuit August 30, 1983, 81-1822, 81-2173 (Sierra Club v. Indiana-Kentucky Electric Corporation and Indiana & Michigan Electric Company)

ROSZKOWSKI, District Judge.

This consolidated appeal arises under the Clean Air Act Amendments of 1970. The issue is whether a federal court may enforce an implementation plan provision which was adopted by the state to meet federal air quality standards, subsequently was approved by the Environmental Protection Agency, but thereafter was invalidated by a court of the adopting state on state law