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56th Street and Earll Drive | Site Overview

Registry placement date: June 2, 2004

Score: 40

County: Maricopa

Location: Phoenix, bounded by Earll Drive to the north, Roosevelt Street to the south, 56th Street to the east and 26th Street 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: Trichloroethene (TCE) and tetracholoroethene (PCE)

Action taken: ADEQ is working cooperatively with a party potentially responsible for the contamination to remediate the site. A pump and treat groundwater system was constructed and started operation in November 2013 as part of an early response action (ERA). 

Status: ADEQ and NXP (formerly Freescale Semiconductor) finalized an agreement for NXP to continue to operate and maintain the groundwater pump-and-treat system as the ERA to address the TCE and PCE in the groundwater. Groundwater is extracted and treated then discharged into the Grand Canal system for non-potable beneficial reuse as irrigation water under an agreement with Salt River Project. ADEQ and NXP have finalized a Consent Order for NXP to perform the remedial investigation and feasibility study for the site. The site documents listed below are all available to view at the site repository page > 

  • Final Remedial Investigation Report
  • Final Remedial Objectives Report
  • Feasibility Study Work Plan

​NXP is currently conducting a soil gas investigation to fulfill data gaps as part of the Feasibility Study. The Feasibility Study will be available approximately June 2020.

Community Advisory Board (CAB): Established and meets as needed. For more information on joining the CAB or to be included on the site mailing list, please contact the community involvement coordinator.