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Shannon Road/El Camino del Cerro | Site Overview

Registry placement date: Shannon Road-Rillito Creek site on April 23, 1999; El Camino del Cerro site on Aug. 18, 1998; the two sites were combined in the fall of 2004 based on sampling results showing a single plume

Score: Shannon Road-Rillito Creek site is 53; El Camino del Cerro site is 71

County: Pima

Location: Northwest Tucson, approximately bounded by West Shumaker Drive to the north, El Camino del Cerro Road on the south, North Dartwhite Drive to the east and North Camino de la Tierra to the west. The site is comprised of industrial and residential properties, as well as a former landfill that occupies approximately 20 acres in the southwest portion of the site.

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-dichloroethene (1,1-DCE), cis-1,2-dichloroethene (cis-1,2-DCE), and vinyl chloride

Action taken: The contaminant plume impacted three community wells, which were removed from service. One of these wells was returned to service with a wellhead treatment system removing contaminants of concern to meet drinking water standards.

Status: ADEQ is currently drafting a Record of Decision for the site.

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 CIP >