2018-11-272018-11-2719746 Tex. Tech L. Rev. 47https://hdl.handle.net/2346/82274Observes the monumental changes the 1970 amendments made to environmental law. The author praises the dual system of enforcement and variance approval. Moreover, the author believes that a federal presence limits leniency in regulating clean air practices. In fact, the federal government taking control over clean air policies is in response to state and local government failure to ”clean up air.”engClean Air ActAir Quality Act of 1967Environmental Protection AgencyEPADual enforcement schemeState implementation plansArticle