Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
Evoqua Water Technologies
Note: Evoqua Water Technologies has previously been known as Siemens, US Filter, and Westates. The facility is now referred to as Evoqua, but the prior names remain in older documents attached to this web page.
Evoqua Fact Sheets
(files open in new windows)
- Community Information Fact Sheet - June 2016 (PDF) (English, 2 pp, 218K)
- Hoja de información comunitaria - Junio 2016 (PDF) (Español, 2 pp, 282K)
- Human Health and Ecological Risk Assessment (HHERA) fact sheet - June 2016 (PDF) (2 pp, 1MB)
- National Historic Preservation Act (NHPA) fact sheet - June 2016 (PDF) (2 pp, 734K)
Evoqua Water Technologies LLC (Evoqua) operates a carbon regeneration facility located on the Colorado River Indian Tribes (CRIT) reservation near Parker, Arizona. Evoqua's process involves treating spent carbon in a regeneration furnace to purify it and make it available for reuse as a commercial product. The carbon that Evoqua receives has been used to remove contaminants from air emissions and contaminated water at other sites. Evoqua receives annually over 5,000 tons of spent carbon from 30 - 35 states across the United States. About 11% of this spent carbon is considered hazardous waste and is regulated by the U.S. Environmental Protection Agency (EPA).
EPA is responsible under the Resource Conservation and Recovery Act (RCRA) for permitting facilities that manage RCRA-regulated hazardous wastes on tribal lands. Starting in 1991, EPA required new carbon regeneration furnaces to obtain hazardous waste permits. Like Evoqua (then known as US Filter / Westates), several facilities were already operating or had begun construction on carbon regeneration furnaces. These pre-existing facilities operate under an "interim status" designation while applying for a RCRA hazardous waste permit.
The first part of the permit application for the Evoqua Parker facility was submitted to EPA in 1995. There have been several sets of comments and requests for information from EPA that Evoqua addressed. As a result, several revisions to the permit application have been submitted by Evoqua to EPA.
"Mike" Mahfouz Zabaneh, P.E. (firstname.lastname@example.org)
(415) 972-3348 | FAX: (415) 947-3533
Environmental Engineer/Project Manager
Permits Office, Land Division
U.S. EPA Region 9
75 Hawthorne Street
Mail Code LND-4-2
San Francisco, CA 94105
Margot Perez-Sullivan (email@example.com)
You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Adobe Reader.