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West Van Buren | Site Overview

Registry placement date: April 10, 1998

Score: 50

County: Maricopa

Location: Western portion of Phoenix, bounded approximately to the north by West McDowell Road, to the east by 7th Avenue, to the south by West Lower Buckeye Road and to the west by 75th Avenue. In addition, a finger shaped plume exists from approximately West Buckeye Road and South 41st Avenue to West Watkins Street and South 11th Avenue.

If you own a private well, live in or near the site boundaries, and have not had your well tested, please contact ADEQ.

Contaminants of concern: Tetrachloroethene (PCE), trichloroethene (TCE), 1,1,1-trichloroethane (1,1,1-TCA), 1,1-dichloroethane (1,1-DCA), cis-1,2-dichloroethene (cis-1,2-DCE), 1,1-dichloroethene (1,1-DCE) and chromium

Action taken: The final remedial investigation (RI) report was completed August 2012. A conditionally approved early response action (ERA) consisting of Roosevelt Irrigation District (RID) irrigation wells is currently in place. The RID wells that comprise the ERA are pumped approximately eight out of 12 months of the year. Groundwater monitoring and sampling has been periodically performed throughout the site. In 2015, a reduced groundwater sampling event was conducted on selected wells throughout the plume. In 2017, selected wells on the western edge down gradient portion of the plume were sampled.

Two interested parties, the RID and the West Van Buren Working Group (WVBWG), submitted individual draft feasibility studies (FS) reports in July 2014.

Multiple sources of contamination have been identified since 1988. Source removal through soil vapor extraction, excavation and groundwater pump and treat has taken place at some facilities for the volatile contaminants under Consent Orders or Working Agreements. Other facilities continue to be monitored and/or evaluated through other ADEQ programs, most notably Hazardous Waste, and still other facilities have settled liability with ADEQ.

Status:  As of 2017, regular sitewide groundwater monitoring and sampling is not currently being conducted.  In 2018, ADEQ requested US EPA to consider taking over jurisdiction of the WVB WQARF site. ADEQ submitted supporting documentation containing PCE/TCE ratios throughout the WVB plume to support the request and suggested US EPA make the WVB site a separate Superfund site or a new Operable Unit (OU4) to the Motorola 52nd Street Superfund Site. As part of the request, plans for a sitewide sampling event is in progress.

Groundwater in the area is not used for drinking water purposes. The area is served by the city of Phoenix municipal water system or other regulated systems.

Community Advisory Board (CAB): Formed but has not met on a regular basis since 2015.  Site progress will be presented to the public when more information is available.