Cleanup of Contaminated Groundwater Project is Underway Sticky

West Phoenix has one of the largest contaminated groundwater plumes in the country. Known as the West Van Buren Area (WVBA) groundwater plume, the impacted area extends from McDowell Road to Buckeye Road, and from 7th Avenue to beyond 79th Avenue. View map.

At least 20 Roosevelt Irrigation District (RID) wells located in the area have been impacted by the contamination and more than 10 additional RID wells are threatened. Pilot Project Treatment Systems installed in West Phoenix neighborhoods are removing the contamination in order to make the water safe for use by West Valley businesses and residents. Currently, four systems are operational.

Spinnaker Holdings, LLC, of Denison, Texas, provided the Pilot Treatment System design and construction of the first four systems and operates the active facilities. To recover costs associated with the cleanup, RID filed a $40 million civil action lawsuit against Potentially Responsible Parties (PRPs) — corporate, governmental and private entities who have been identified as liable parties for contributing to the groundwater contamination —under the federal Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) of 1980 (also called “Superfund”). The WVBA WQARF (State Superfund) Site was first listed in 1987. The contaminants include trichloroethene (TCE), tetrachloroethene (PCE), 1,1-dichloroethene (DCE), 1,1-dichloroethane (DCA) and MTBE.

RID provides water for agricultural and residential customers throughout Phoenix and has been managing water resources in Phoenix's West Valley since the 1920s.

RID Response Action Featured in Presentation to Arizona Hydrological Society Symposium

September 19, 2013--At the Arizona Hydrological Society’s 2013 Symposium in Tucson, Synergy Environmental’s Dennis Shirley, Joel Peterson and Andrew MacHugh presented an overview of the Roosevelt Irrigation District Response Action, addressing Central Phoenix groundwater contamination.

More background information can be found in the presentation abstract.
Download the full presentation.

ADEQ Approves RID Feasability Study Work Plan

July, 2013--The Arizona Department of Environmental Quality (ADEQ) sent Roosevelt Irrigation District (RID) officials a letter approving RID's Feasability Study Work Plan
Download Letter

Gallagher & Kennedy Withdraws as Lawsuit Counsel; Bonnett, Fairbourn, Friedman and Balint to be Substitute Counsel

PHOENIX, ARIZONA (June 4, 2013)—Officials at the Roosevelt Irrigation District (RID) today confirmed that the federal district court has granted an Application for Substitution of Counsel with Client Consent, filed by the law firms of Bonnett, Fairbourn, Friedman and Balint, P.C. (BFFB) and Gallagher & Kennedy, P.A. (G&K).

30 Day Public Comment Period: Feasibility Study Work Plan For the West Van Buren (WQARF) Registry Site

April 5, 2013 — NOTICE OF 30 DAY PUBLIC COMMENT PERIOD ON REQUEST OF APPROVAL OF FEASIBILITY STUDY WORK PLAN FOR THE WEST VAN BUREN WATER QUALITY ASSURANCE REVOLVING FUND (WQARF) REGISTRY SITE

ADEQ APPROVES MODIFIED ERA WORK PLAN

The Arizona Department of Environmental Quality (ADEQ) sent Roosevelt Irrigation District (RID) officials a letter providing conditional approval of RID’s Modified Early Response Action Work Plan.
Download Letter

Briefing recap and downloadable presentation

On December 6, 2012, Roosevelt Irrigation District (RID) representatives gave a technical briefing to the West Van Buren WQARF Site Community Advisory Board (CAB). The briefing provided a summary of Early Response Action (ERA) activities; and review of project accomplishments; an overview of the Modified ERA Work Plan and a brief discussion regarding the Draft Feasibility Study Work Plan. Download the presentation (12.7 MB)

Court of Appeals Rules in Favor of RID

In World Resources Company v ROOSEVELT IRRIGATION DISTRICT, the Court of Appeals affirmed the trial court’s dismissal of World Resources’ claim. See more.

EPA Releases Final Health Assessment for TCE

WASHINGTON – The U.S. Environmental Protection Agency (EPA) today released the final health assessment for trichloroethylene (TCE) to the Integrated Risk Information System (IRIS) database. IRIS is a human health assessment program that evaluates the latest science on chemicals in our environment.

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