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USDA Forest Service
1400 Independence Avenue SW
Washington, D.C.
(202) 205-8333

Clean Air Act

Above: Idaho and Oregon's Hells Canyon Wilderness


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  • Protects human health and welfare with national air quality standards;
  • Sets a national visibility goal of no human-caused impairment in Class I areas which were further defined through the 1999 Regional Haze Rule;
  • and establishes the Prevention of Significant Deterioration of Air Quality Related Values program that mandates a review by Federal Land Managers of new or major modifications to pollution sources that could affect Class I areas.

Visit http://www.epa.gov/air/caa/ to read the Clean Air Act.

[graphic] USDA logo, which links to the department's national site. [graphic] Forest Service logo, which links to the agency's national site. [graphic] A link to the US Forest Service home page.