U.S. Environmental Protection Agency (EPA) Office of Air and Radiation
State or local air quality management agencies
See ADDRESSES & CONTACTS for addresses and telephone numbers.
AIR REGULATION BASICS
The federal Clean Air Act (CAA) was enacted in 1970 because of increasing concerns over the quality of the nation's air. The CAA was amended in 1977 and 1990. Simply put, the purpose of the CAA is to protect and improve the nation's air quality, the stratospheric ozone layer, and the public's health. Through the CAA's various mandates, the United States has seen the quality of its air greatly improve over the past few decades.
EPA is responsible for developing enforceable regulations to satisfy the provisions of the CAA and ...