ADEQ has received a Proposed Remedial Action Plan (PRAP) for the Union Pacific Railroad (UPRR) 22nd Street Yard VRP site in Tucson, Arizona. The PRAP was submitted in accordance with Arizona Revised Statutes (A.R.S.) §49-175 and provides the details for implementing the ADEQ-approved remedy. The PRAP proposes implementation of Distributed Light Non-Aqueous Phase Liquid (LNAPL) Recovery as the remedy at the site. This remedy includes bioventing and skimming pumps in wells connected to the existing onsite remediation system, and sorbent tubes and bailing in wells not connected to the onsite remediation system. In addition, the PRAP proposes semi-annual groundwater monitoring and sampling program where metrics will be evaluated.

Site Information

The UPRR 22nd Street Yard VRP site consists of groundwater affected by benzene and LNAPL. The affected groundwater is roughly bounded by 21st Street to the north, 27th Street to the south, Santa Rita Avenue to the west, and Plumer Avenue to the east.

UPRR 22nd Street Yard VRP Site | View Site Overview >

Review Documents

Original Public Notice | View/Download > 
PRAP | View/Download >

The documents are also available for review in person at the ADEQ Records Center | Learn More >

Public Comment Period 

Dates: June 8, 2021 – July 23, 2021

Comments may be submitted as follows:

     By Email to ADEQ | Send Email >
     By Mail to ADEQ (Must be postmarked or received by July 23, 2021):
       Attn: Nichole Osuch
       ADEQ Voluntary Remediation Program
       1110 W. Washington St.
       Phoenix, AZ 85007

    or:

     By Email to Jacobs Engineering Group Inc. | Send Email >