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WQARF | WCP West Osborn Complex - Overview


West Central Phoenix - West Osborn Complex | Overview

Revised On: Jan. 4, 2024 - 10:43 a.m.

Registry placement date: Aug. 11, 1998

Score: 47

County: Maricopa


Phoenix, approximately bounded by the Grand Canal to the north, Van Buren Street to the south, 33rd Avenue to the east and 55th Avenue to the west.

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) and trichloroethene (TCE)

Action Taken

A soil vapor extraction (SVE) system was operated at the site from August 1999 through October 2002 to remove contaminants from the soil.


Remedial investigation (RI) and remedial objective (RO) reports have been completed. Feasibility study (FS) reports for the deep and shallow plumes have been approved. In 2013, ADEQ completed a separate Proposed Remedial Action Plan (PRAP) for each plume. In 2020, ADEQ published a new comprehensive PRAP.

Community Advisory Board (CAB)

Established and meets on a regular basis. A list of CAB members and their contact information is available in the Community Involvement Plan (CIP) | View/Download CIP >