An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Particle Pollution Designations

Final Area Designations for the 2012 Annual Fine Particle Standard for Tennessee

May 10, 2017 - EPA issues initial designations for the 2012 primary annual national ambient air quality standard for fine particulate matter (PM2.5) for all remaining areas in Tennessee.

See other area designations for the 2012 Annual Fine Particle Standard

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.