Evolution of Clean Air Act Requirements

Clean Air Act of 1963

• Authorized development of a national program to address air pollution related environmental problems.
• Authorized research into techniques to minimize air pollution.

Clean Air Act of 1967

• Authorized enforcement procedures for air pollution problems involving interstate transport of pollutants.
• Authorized expanded research activities.

Clean Air Act of 1970

• Authorized establishment of NAAQS.
• Established requirements for State Implementation Plans (SIP) to achieve NAAQS.
• Authorized establishment of NSPS for new and modified stationary sources.
• Established NESHAPs.
• Increased enforcement authority.
• Authorized requirements for control of motor vehicle emissions.

1977 Amendments to the Clean Air Act of 1970

• Authorized provisions related to PSD.
• Authorized provisions related to non-attainment of standards.

1990 Amendments to the Clean Air Act of 1970

• Authorized the Acid Rain programs.
• Implemented program to control 189 toxic pollutants.
• Established national permit program requirements.
• Modified provisions concerning attainment issues.
• Expanded enforcement authority.

Disclaimer: The City of St. Louis APCD has tried to make these referenced pages as accurate as possible. However, none of the text is absolute or final.