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 This website is no longer updated and links to external websites and some internal pages may not work.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 V Permit No. AZ50800004: APS Cholla Power Plant

Class V UIC Permit issued to Arizona Public Service Company with authorization to construct and operate a Class V Experimental CO2 Storage Pilot Test injection well and information on well construction and management.

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.