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Clean Air Act : historical information on EPA's process for reviewing California waiver requests and making waiver determinations
  • Published Date:
    2009-01-01
Filetype[PDF-185.97 KB]


Details:
  • Publication/ Report Number:
    GAO-09-249R
  • Resource Type:
  • Geographical Coverage:
  • Format:
  • Abstract:
    Emissions from mobile sources, such as automobiles and trucks, contribute to air quality degradation and can threaten public health and the environment. Under the Clean Air Act, the Environmental Protection Agency (EPA) regulates these emissions. The act generally allows one set of federal standards for new motor vehicle emissions and pre-empts states from adopting or enforcing their own standards. However, it also authorizes the EPA Administrator to waive this provision to allow the state of California1 to enact and enforce emission standards for new motor vehicles that are as protective, in the aggregate, as federal government standards. Other states may also adopt California’s standards if they choose. The waiver provision was added to the Federal Air Quality Act (one of the precursors of the current Clean Air Act) in

    1967 because of California’s severe air pollution problems and because the state had

    already established its own emission standards for mobile sources.

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