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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Office of Inspector General

Report: Decline In EPA Particulate Matter Methods Development Activities May Hamper Timely Achievement of Program Goals

Report #2003-P-00016September 30, 2003

What Was Found

EPA has not supported PM2.5 methods development activities to the extent necessary to fully achieve the short- and long-range goals of the PM2.5 program in a timely manner.

Report Materials

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