Air - General: What you need to know

Governing Law and Regulations

Clean Air Act Amendments of 1990, 42 USC 7401 to 7671 and regulations at 40 CFR 50 to 97

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Title I: Air pollution control and prevention:

National Ambient Air Quality Standards (NAAQS): 40 CFR 50

Ozone NAAQS: 40 CFR 50.9(b), 40 CFR 50.10, and 40 CFR 51.900 to 51.908

Particulate matter NAAQS: 40 CFR 50.6 and 40 CFR 50.13

State implementation plans (SIPs): 40 CFR 51 and 40 CFR 52

New Source Performance Standards (NSPS): 40 CFR 60

Hazardous air pollutants (HAPs): 40 CFR 63

Enforcement provisions: 42 USC 7413 and 40 CFR 19.4

Title IV-A: Acid deposition control: 40 CFR 72 to 78

Title V: Permits: 40 CFR 70 and 40 CFR 71

Title VI: Stratospheric ozone protection: 40 CFR 82

Other significant air quality issues:

Pollutant transport: 40 CFR 72 to 78, 40 CFR 96.101 to 96.388, and 40 CFR 97.101 to 97.388

Regional haze: 40 CFR 51.300 to 51.309 and 40 CFR 51 Appendix Y

Greenhouse gases (GHGs): 40 CFR 98, 40 CFR 51.165, 40 CFR 52.21, 40 CFR 70, and 40 CFR 71

Regulatory Agencies

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 Regulatory Overview


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 ...

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More on this topic:

Governing Law and Regulations
Regulatory Agencies
Air Regulatory Overview
CAA Amendments of 1990
Other Significant Air Quality Issues

State Requirements

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Air - General Resources

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