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 This website is no longer updated and links to external websites and some internal pages may not work.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

UIC Class I Permit No. R9UIC-CA1-FY17-4: Chalk Cliff Limited, Maricopa, CA

UIC Class I non-hazardous waste injection well facility with one (1) existing injection well, known as Well Chalk Cliff WD-2, located at the Chalk Cliff Power Plant in Maricopa, California.

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.