Subsequent Topock Compressor Station Final Groundwater Remediation Project

10 Documents in Project


SCH Number
Lead Agency
Department of Toxic Substances Control
Document Title
Subsequent Topock Compressor Station Final Groundwater Remediation Project
Document Type
NOP - Notice of Preparation
Present Land Use
Open Space/Resource Conservation/Institutional
Document Description
Groundwater beneath and near the Topock Compressor Station (TCS) has been contaminated by chemicals associated with historical wastewater discharge from TCS operations related to compression of natural gas in areas known as Bat Cave Wash and East Ravine. The Groundwater Remediation Project, as analyzed and approved in the 2011 Groundwater FEIR and the 2013 Addendum to the EIR, involves manipulation of subsurface water flow to move a contaminated groundwater plume with Cr(VI) and other chemicals of potential concern, originating from past operations at the TCS, through a treatment zone. The project evaluated in the SEIR for the Topock Compressor Station Final Groundwater Remediation Project will focus primarily on the modifications to the Groundwater Remediation Project since the 2011 Groundwater FEIR and the 2013 Addendum to the EIR that were identified through completion of the remedy design process. The Subsequent EIR will be prepared for purpose of DTSC's consideration of adoption of the Final Remedy Design. Some of the primary changes to the Groundwater Remediation Project that will be considered in the SEIR.

Contact Information

Mr. Aaron Yue
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency


San Bernardino
Cross Streets
National Trails Highway
Total Acres
Parcel #
065014101,065014104,065015101, 065015102,065015103,065015104,065015105,065015106,065015107,06501
State Highways
SR 66, I-40
BNSF Railroad
Colorado River
Other Location Info
Topock, Arizona
Other Information
Section: 9

Notice of Completion

Review Period Start
Review Period End
Development Types
Waste Treatment:Hazardous (groundwater)
Local Actions
Groundwater Cleanup
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Vegetation, Wetland/Riparian, Utilities, Service Systems, and Energy
Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Justice, Attorney General's Office, California Department of Parks and Recreation, California Department of Transportation, District 8 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Colorado River Basin Region 7 (RWQCB), Colorado River Board, Department of Fish and Wildlife, Region 6, Department of Water Resources, Office of Emergency Services, California, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Division of Drinking Water

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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