Renewal of Waste Discharge Requirements (WDRs) for Injection of Treated Groundwater

2 Documents in Project


SCH Number
Lead Agency
Regional Water Quality Control Board, Region 7 (Colorado River Basin), Palm Desert
Document Title
Renewal of Waste Discharge Requirements (WDRs) for Injection of Treated Groundwater
Document Type
NEG - Negative Declaration
Present Land Use
Resource Conservation (RC)

Document Description
PG&E is conducting investigative and remedial activities at the Topock Compressor Station under the oversight of the California Environmental Protection Agency, Department of Toxic Substances Control, as well as the U.S. Department of the Interior, U.S. Bureau of Land Management, U.S. Fish and Wildlife Service, and U.S. Bureau of Reclamation. On-going remedial activities include Interim Measures (IM) No. 3, which involves the extraction, treatment, and management of groundwater with the objective of maintaining hydraulic control of a hexavalent chromium plume in groundwater. Associated IM No. 3 facilities include groundwater extraction wells, a water treatment system, conveyance piping, injection wells, and monitoring well facilities.

Contact Information
Liann Chavez
Regional Water Quality Control Board, Region 7 (Colorado River B
720 Fred Waring Drive, Suite 100
Palm Desert, CA 92260

Phone : (760) 776-8945


San Bernardino
Cross Streets
Northeast of I-40 and Park Moabi Road
Parcel #
State Highways
Colorado River
5, 8
Other Location Info
City/Nearest Community: Topock, Arizona

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Existing groundwater treatment and injection system)
Local Action
Other Action Other Action: Waste Discharge Requirements
Project Issues
Aesthetic/Visual Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Noise Public Services Recreation/Parks Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wildlife Land Use Cumulative Effects
Reviewing Agencies
Air Resources Board, Major Industrial Projects California Department of Parks and Recreation California Department of Transportation, District 8 California Highway Patrol California Public Utilities Commission Colorado River Board Department of Fish and Wildlife, Region 6 Department of Toxic Substances Control Department of Water Resources Office of Historic Preservation Resources Agency Resources, Recycling and Recovery State Water Resources Control Board, Divison of Financial Assistance California Native American Heritage Commission

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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