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 This website is no longer updated and links to external websites and some internal pages may not work.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

Ambient Monitoring Technology Information Center (AMTIC)

Photochemical Assessment Monitoring Stations (PAMS) Volatile Organic Compound Target List

This page contains links to documents providing guidance on the list of volitile organic compounds (VOCs) state and local monitoring agencies should attempt to measure at their PAMS monitoring sites.

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