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Talk:National Ambient Air Quality Standards

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 Definition Concentration limits set by the United States Environmental Protection Agency for outdoor ambient air pollutants considered harmful to public health and the environment. [d] [e]

Wikipedia has an article of the same name

There may be some content that is the same as in this article as in the WP article. If so, it is inadvertant since this article was written practically from from scratch. Most of the content was derived from the references listed in the article as was also the case for the WP article. Milton Beychok 02:03, 24 June 2009 (UTC)