On December 1, 2016 , the U.S. Environmental Protection Agency proposed determinations for 11 nonattainment areas classified as Moderate for the 2006 24-Hour Fine Particulate Matter National Ambient Air Quality Standards. Based on requirements under the Clean Air Act, these areas were required to meet the standard by December 31, 2015.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Fact Sheet (PDF)(3 pp, 98 K)