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Public Notice
Waste Division

On March 17, 2023, the public comment period begins for the proposed work plan for the SFPP, L.P. Silvercroft Wash Release Voluntary Remediation Program (VRP) in Tucson, Arizona. The comment period ends April 17, 2023.

Public Notice Information

ADEQ has received a work plan for the SFPP, L.P. Silvercroft Wash Release VRP site. The work plan proposes implementation of in-situ air sparging to remediate groundwater and was submitted in accordance with Arizona Revised Statutes (A.R.S.) § 49-175 and § 176.


The SFPP, L.P. Silvercroft Wash Release VRP site consists of a groundwater plume located west of the I-10 Freeway, north of Grant Road, along the Silvercroft Wash in located in Tucson, Arizona. The plume is bounded approximately by the extension of Goret Road to the north, Silverbell Tree Drive to the south, Silver Island Way to the east, and Mountain Creek Way to the west. Contaminants of concern at the site are benzene, toluene, ethylbenzene, and total xylenes (collectively referred to as BTEX) and methyl tertiary-butyl ether (MTBE).

SFPP, L.P. Silvercroft Wash Release Site Overview | View >

Review Documents

Original Published Public Notice | View/Download > 
Remedial Work Plan | View/Download >

You may also review the documentation at the ADEQ Record Center | Learn How >

Public Comment Period 

Dates: March 17, 2023 – April 17, 2023

Comments may be submitted as follows:

     By Email | Send Email > 
     By Mail (Must be postmarked or received by April 17, 2023):

       Waste Programs Division, Voluntary Remediation Program
       Attn: Nichole Osuch
       1110 W. Washington St.
       Phoenix, AZ  85007