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Guam - Piti and Tanguisson Counties sic, see definition are designated nonattainment for the SO2 NAAQS.

Puerto Rico - Municipality of Guaynamo [sic] is designated nonattainment for the PM 10 NAAQS.

* The National Ambient Air Quality Standards are health standards for lead, carbon monoxide, sulfur dioxide, ground-level 8-hour ozone, and particular matter (PM-10 and PM-2.5). There are no nitrogen dioxide nonattainment areas.

** Partial counties, those with part of the county designated nonattainment and part attainment, are shown as full counties on the map.

Source: United States Environmental Protection Agency

Date 2 July 2007 (first version); 30 June 2008 (last version)
Source Transferred from en.wikipedia; transferred to Commons by User:Adrignola using CommonsHelper.
Author Original uploader was Beland at en.wikipedia. Later version(s) were uploaded by Iain at en.wikipedia.
( Reusing this file)



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