What's New

Final Groundwater Design Approved

The U.S. Department of the Interior (DOI) conditionally approved the Final Groundwater Design and the Construction/Remedial Action Work Plan on April 3, 2018. Subsequent to certification of the Final SEIR, DTSC conditionally approved the Final Groundwater Design and the Construction/Remedial Action Work Plan on April 24, 2018. The conditional approvals can be viewed here. The Final Groundwater Remedy Design document can be downloaded here.

Subsequent Environmental Impact Report for Groundwater Remedy Certified

The California Department of Toxic Substances Control (DTSC) certified the Final Subsequent Environmental Impact Report (SEIR) on April 24, 2018. It can be viewed here. The Final SEIR considered and responded to comments submitted during the draft review period.

Clearinghouse Task Force (CTF) Meeting

DTSC holds regular Clearinghouse Task Force (CTF) meetings. The CTF is a small group of representatives from State and Federal agencies, key stakeholders and Tribes formed to strategize and develop processes and tools to improve communications and enhance stakeholder understanding of Project and regulatory information. A CTF meeting was held on October 16, 2018 in Lake Havasu City, Arizona. The next CTF meeting is planned for December 4, 2018.

Consultative Workgroup (CWG) Meeting

The Consultative Workgroup (CWG) is a specific group of key governmental agencies, stakeholders and Tribes established to facilitate participation in the Site investigation and remediation process. The CWG usually meets quarterly. A CWG meeting was held on May 16, 2018 in Henderson, NV. The next CWG meeting is planned for December 5, 2018.

DTSC April 2018 Fact Sheet Available

The DTSC April 2018 Project Update Fact Sheet - Community Update: Pacific Gas & Electric Company (PG&E) Topock Compressor Station, Environmental Investigation Update is now available to view here.

Groundwater Remedy Open Houses, April 17 and 18, 2018:

The U.S. Department of the Interior hosted two informal open houses on April 17 and 18, 2018 and provided information about the groundwater remedy at and near the Topock Compressor Station. Full details can be found here.

Soil Risk Assessment and Soil RFI/RI Reporting have begun

Upon completion of the soil investigation field work and discussion of soil data, DTSC and DOI concurred with PG&E to begin the soil risk evaluation process on June 20, 2017. The risk assessment will assess potential human health and ecological risks based on soil sampling data. This information will assist risk management decisions on the need for soil remediation, if any. The Soil Risk Assessment Report is anticipated to be completed in 2018.

Concurrently, the preparation of the Soil RFI/RI Report (also called the RFI/RI Volume 3 Report) has also begun. The Soil RFI/RI Report will present the findings and conclusions of the soil investigation field work and the conclusions from the Risk Assessment. The Soil RFI/RI Report is anticipated to be completed in 2019. 

Soil Investigation Field Work Completed

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.

Soil sampling collection activities on and adjacent to the Station property began December 2015 and continued through March 2016. Soil samples collected at various locations and depths are sent to environmental laboratories for analysis. After reviewing the initial laboratory data, DTSC and DOI determined that additional soil samples were needed to properly evaluate spatial distribution of the data. Additional work was conducted according to the data gap work plan approved on November 2016 (view it here). Field work started in January 2017 and completed in April 2017.

Technical Workgroup (TWG) Meeting

The Technical Workgroup (TWG) was established as a subgroup of the Consultative Workgroup (CWG) for technical experts to deliberate on various scientific aspects of the Project and remediation issues as needed. A TWG meeting was held on August 16, 2017 in Lake Havasu City, Arizona. The August 2017 meeting focused on the development of human health and ecological risk assessments.