Jump to main content or area navigation.

Contact Us

Area Designations for 1997 Fine Particle (PM2.5) Standards

Correspondence for April 2005 action

Because PM2.5 designations occurred close to the end of 2004, EPA provided an opportunity for states to submit quality-assured, certified air quality data for 2002-2004. A number of states submitted information requesting a change in designation status prior to the April 5, 2005 effective date. State letters and associated information is listed below.

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

Alabama

California

Georgia

Indiana

Kentucky

Michigan

Ohio

Pennsylvania

Tennessee

West Virginia

Jump to main content.