Air Pollution: Implementation of the Clean Air Act Amendments of 1990

GAO discussed the Environmental Protection Agency's (EPA) implementation of the Clean Air Act Amendments and on sources regulated by multiple provisions of the act, focusing on: (1) the status of EPA's implementation of requirements established by the 1990 amendments; (2) the views from the stakeholders--state governments, local programs, industries that are regulated under the act, and environmental advocacy groups--on the issues that either helped or hindered the implementation of the 1990 amendments; (3) examples of emission sources subject to regulation under more than one Clean Air Act program; and (4) the status of EPA's efforts to facilitate compliance for such sources.