although since 1977, section 321(a) of the Clean Air Act (
42 U.S.C. 7621(a)) has required the Administrator of the Environmental Protection Agency to “conduct continuing evaluations of potential loss or shifts of employment which may result from the administration or enforcement of the provision of [the Clean Air Act] and applicable implementation plans, including where appropriate, investigating threatened plant closures or reductions in employment allegedly resulting from such administration or enforcement”, the Environmental Protection Agency has failed to undertake that analysis or conduct a comprehensive study that considers the impact of programs carried out under the Clean Air Act (
42 U.S.C. 7401 et seq.) on jobs and changes in employment.