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WQARF | ECP 48th & IS - Overview


East Central Phoenix - 48th Street and Indian School Road | Overview

Revised On: Feb. 16, 2024 - 1:45 p.m.

Registry placement date: March 26, 1999

Score: 27

County: Maricopa


Phoenix, bounded by Indian School Road to the north, Clarendon Avenue to the south, 46th Place to the east and 42nd Place 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.

Contaminant of Concern

Tetrachloroethene (PCE)

Action Taken

ADEQ and the Salt River Project (SRP) entered into an agreement to conduct a source control interim remedial action (IRA) in 2000. As part of the IRA, SRP constructed a soil vapor extraction (SVE) system to remediate the source of PCE in soil. SRP relinquished control of the SVE system to ADEQ which continued to operate and was then decommissioned in 2012. A vapor intrusion indoor air assessment study took place during the summer of 2013 and in February 2014. This assessment focused on residences (specifically single-family homes and ground-floor residences of multi-unit buildings) and schools. Results indicated that there was no threat to residences from vapor intrusion and that no indoor mitigation systems were necessary. 


The Feasibility Study (FS) for the site was completed in July 2020. The Proposed Remedial Action Plan (PRAP) for the site is currently being prepared.

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 >