Counties Designated "Nonattainment"

for Clean Air Act's National Ambient Air Quality Standards (NAAQS) *

,o

Pollutants
Pollutants
Pollutant

Guam - Piti and Tanguisson Counties are designated nonattainment for the S02 NAAQS

Puerto Rico - Mun. of Guaynamo is designated nonattainment for the PM10 NAAQS

* The National Ambient Air Quality Standards are health standards for lead, carbon monoxide, sulfur dioxide,
ground level 8-hour ozone, and particulate 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.

03/2008

Legend **

County Designated Nonattainment for 3 NAAQS
County Designated Nonattainment for 2 NAAQS
County Designated Nonattainment for 1 NAAQS

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