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 This website is no longer updated and links to external websites and some internal pages may not work.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

EPA Pacific Southwest (Region 9) RACT SIP Submissions Guidance

Reasonably Available Control Technology (RACT) State Implementation Plan (SIP) Submission guidance intended to help state and local air agencies develop and submit RACT SIPs that meet federal criteria in EPA's Pacific Southwest (Region 9).

If you experience a problem reading a document with assistive technology, please contact us.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.