Environmental Protection Agency Standards The
Federal Clean Air Act of 1970, amended in 1977 and 1990, requires the Environmental
Protection Agency (EPA) to establish National Ambient
Air Quality Standards. EPA has set specific standards for each of six
major pollutants: Each pollutant standard represents a maximum concentration level (micrograms per cubic meter) that cannot be exceeded during a specified time interval. SOURCE: Health, United States Related
Links
This page last reviewed
January 11, 2007
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