What's New

Draft Subsequent Environmental Impact Report Was Available For Public Review and Comment

The California Department of Toxic Substances Control (DTSC) invited the public to review and comment on the Draft Subsequent Environmental Impact Report (Draft SEIR) for the Pacific Gas & Electric Topock Compressor Station Final Groundwater Remediation Project. The Notice of Availability can be viewed here and the Notice of Completion can be viewed here.


The Draft SEIR evaluates potential environmental impacts resulting from design details of the selected groundwater remedy. You can view the guide to the Draft SEIR and associated documents here.

DTSC was accepting comments during a 47-day public comment period on the Draft SEIR from January 12, 2017 to February 27, 2017. The comment period has ended. Comments were submitted at public meetings, or mailed or emailed to:


Aaron Yue, Project Manager

Department of Toxic Substances Control

5796 Corporate Ave., Cypress, CA 90630

Phone: (714) 484-5329

Email: aaron.yue@dtsc.ca.gov


All comments must be postmarked or received by DTSC no later than 5:00 p.m., Monday, February 27, 2017. All comments will be considered and responded to in the Final SEIR.



Public meetings to learn more about the environmental issues addressed in the Draft SEIR were held in Needles, CA and Golden Shores, AZ. An ad and flyer for the public meetings have been posted.


Meeting Locations:



January 31, 2017

Needles Senior Center

1699 Bailey Avenue

Needles, CA 92363

Open House: 5:30 p.m. to 6:30 p.m. (Pacific Time Zone)

Public Hearing: 6:30 p.m. to 8:00 p.m. (Pacific Time Zone)



February 1, 2017

Golden Shores Community Center

13136 Golden Shores Parkway

Golden Shores, AZ 86436

Open House: 5:30 p.m. to 6:30 p.m. (Mountain Time Zone)

Public Hearing: 6:30 p.m. to 8:00 p.m. (Mountain Time Zone)

DTSC November 2016 Fact Sheet

The DTSC November 2016 Project Update Fact Sheet - Project Update: Soil Investigation and Groundwater Remedy at Pacific Gas & Electric Company Topock Compressor Station is now available to view here.

Clearinghouse Task Force (CTF) Meeting

DTSC held a Clearinghouse Task Force (CTF) meeting on January 17, 2017, in Henderson, Nevada, and on March 14, 2017 via teleconference. The CTF is a small group of key stakeholders and Tribes formed to strategize and develop processes and tools to improve communications and enhance stakeholder understanding of Project and regulatory information. The next CTF meeting will be held on April 18, 2017 in Henderson, Nevada.

Technical Workgroup (TWG) Meeting

The Technical Workgroup (TWG) committee held a meeting on October 20, 2016 at the PG&E Topock Compressor Station in Needles, California. The TWG was established as a technical subgroup of the CWG to discuss various Project and remediation related issues as needed. The next TWG meeting is tentatively scheduled for July 20, 2017. 

Consultative Workgroup (CWG) Meeting

DTSC held a Consultative Workgroup (CWG) meeting on January 18, 2017 in Henderson, Nevada. The CWG is a specific group of key stakeholders and Tribes established to facilitate participation in the Site investigation and remediation process. The next CWG meeting is scheduled for April 19, 2017 in Henderson, Nevada.

DTSC is Preparing a Subsequent EIR for the Groundwater Remedy

DTSC determined that the preparation of a Subsequent Environmental Impact Report (EIR) is required to evaluate potential environmental impacts resulting from design details of the selected groundwater remedy (In situ TreatmentTreatment of contamination in place. with Freshwater FlushingMoving of fresh water through the well system to push the plume through an In-Situ Reduction Zone located along National Trails Highway.) that were added or modified since the approval of the conceptual Groundwater Remediation Project in the 2011 Final Groundwater Remedy EIR and the 2013 Addendum to the EIR. DTSC issued a Notice of Preparation announcing this decision. The public comment period began on May 5 and ended on June 4, 2015.

DTSC held public meetings on May 19 and 20, 2015, where the local agencies, public, and the Tribes were provided an opportunity to discuss the scope of the Subsequent EIR (SEIR). Their input and comments were considered in the preparation of the Draft SEIR for the groundwater remedy. DTSC anticipates the draft SEIR will be available for public review and comments in early 2017. For more information on the proposed SEIR, you can view the Notice of Preparation in the document library. Be sure to come back and check for the Draft SEIR Notice of Availability in early 2017.

Soil Investigation Field Work Continues

DTSC approved the Soil Investigation Work Plan and the Final EIR for Soil Investigation on August 24, 2015. You can view it and the associated documents here

Investigation activities on and adjacent to the Station property began December 2015 and continued through March 2016. After reviewing the collected data, DTSC determined that additional field work is needed to complete the investigation. Additional work will be conducted according to the data gap work plan approved on November 2016 (view it here). Field work is planned to start in January 2017, and continue through the first quarter of 2017. Similar to previous sampling activities, a truck-mounted drill rig and a backhoe/excavator will be used. Additional support vehicles such as pickup trucks, small all-terrain vehicles, and delivery trucks will also be utilized. Activities may be visible from Interstate 40 and National Trails Highway, but work in any specific location is expected to be completed within a week or two.

Final Groundwater Basis of Design Report Available

Pursuant to DTSC and DOI direction, PG&E has submitted the Final Groundwater Design document for approval. The Final Design document can be downloaded here.