Gerald Heaney, Union Electric Co. v. Environmental Protection Agency… (1979)
“ We cannot, of course, read more into Fry or into the EPA's concession than was intended. We do not now hold that the Clean Air Act will ultimately permit a noncomplying polluter to continue operations without change if such change is not technologically or economically feasible. We do hold, however, that this question can be raised in any future enforcement proceeding, and that Union Electric at that time will be able to argue that Congress did not intend that result or that, if it was intended, the statute is unconstitutional. ”
