User:Milton Beychok/Sandbox: Difference between revisions
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The [[U.S. Clean Air Act]],<ref>[http://epw.senate.gov/envlaws/cleanair.pdf Clean Air Act] (The entire text as of February 24, 2004)</ref> enacted by the [[U.S. Congress]] and last amended in 1990,<ref>[http://epa.gov/air/caa/ Clean Air Act] (From the U.S. EPA website: "Legislation passed since 1990 has made several minor changes.")</ref> required the [[U.S. Environmental Protection Agency]] (U.S. EPA) to set '''National Ambient Air Quality Standard (NAAQS)'''<ref name=NAAQS>[http://epa.gov/air/criteria.html National Air Quality Standards] As summarized on the website of the U.S. EPA</ref> <ref name=40CFR50>[http://frwebgate4.access.gpo.gov/cgi-bin/PDFgate.cgi?WAISdocID=71829883266+5+2+0&WAISaction=retrieve Full text of 40 CFR 50] Title 40 Part 50 of the [[United States]] [[Code of Federal Regulations]] (CFR) containing the National Ambient Air Quality Standards</ref> for air pollutants considered harmful to public health and the environment. | The [[U.S. Clean Air Act]],<ref>[http://epw.senate.gov/envlaws/cleanair.pdf Clean Air Act] (The entire text as of February 24, 2004)</ref> enacted by the [[U.S. Congress]] and last amended in 1990,<ref>[http://epa.gov/air/caa/ Clean Air Act] (From the U.S. EPA website: "Legislation passed since 1990 has made several minor changes.")</ref> required the [[U.S. Environmental Protection Agency]] (U.S. EPA) to set '''National Ambient Air Quality Standard (NAAQS)'''<ref name=NAAQS>[http://epa.gov/air/criteria.html National Air Quality Standards] As summarized on the website of the U.S. EPA</ref> <ref name=40CFR50>[http://frwebgate4.access.gpo.gov/cgi-bin/PDFgate.cgi?WAISdocID=71829883266+5+2+0&WAISaction=retrieve Full text of 40 CFR 50] Title 40 Part 50 of the [[United States]] [[Code of Federal Regulations]] (CFR) containing the National Ambient Air Quality Standards</ref> for for outdoor ambient air pollutants considered harmful to public health and the environment. | ||
The Clean Air Act established two types of national air quality standards. '''''Primary standards''''' define air pollutant concentration limits to protect the public health , including the health of ''sensitive populations'' such as asthmatics, children and the elderly. '''''Secondary standards''''' define limits that protect the public welfare and environment, including | |||
Revision as of 20:37, 22 June 2009
The U.S. Clean Air Act,[1] enacted by the U.S. Congress and last amended in 1990,[2] required the U.S. Environmental Protection Agency (U.S. EPA) to set National Ambient Air Quality Standard (NAAQS)[3] [4] for for outdoor ambient air pollutants considered harmful to public health and the environment.
The Clean Air Act established two types of national air quality standards. Primary standards define air pollutant concentration limits to protect the public health , including the health of sensitive populations such as asthmatics, children and the elderly. Secondary standards define limits that protect the public welfare and environment, including
References
- ↑ Clean Air Act (The entire text as of February 24, 2004)
- ↑ Clean Air Act (From the U.S. EPA website: "Legislation passed since 1990 has made several minor changes.")
- ↑ National Air Quality Standards As summarized on the website of the U.S. EPA
- ↑ Full text of 40 CFR 50 Title 40 Part 50 of the United States Code of Federal Regulations (CFR) containing the National Ambient Air Quality Standards