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 This website is no longer updated and links to external websites and some internal pages may not work.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

Section 404 of the Clean Water Act

Elevation Withdrawal regarding Irvine Company Development, Orange Co, CA under CWA Section 404 (October 20, 1998)

A letter to inform of decision not to elevate the Los Angeles District's (District) decision to issue a permit to The Irvine Company for a proposed industrial/commercial site development in Orange County, California.

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