Waste Discharge Requirements, General Order for In-situ Groundwater Remediation


SCH Number
Lead Agency
Regional Water Quality Control Board, Region 5 (Central Valley), Sacramento
Document Title
Waste Discharge Requirements, General Order for In-situ Groundwater Remediation
Document Type
MND - Mitigated Negative Declaration

Document Description
The Regional Board proposes to adopt General Waste Discharge Requirements (WDRs) for in-situ groundwater remediation at sites impacted by volatile organic compounds, nitrogen compounds, perchlorate, pesticides, semi-volatile organic compounds, hexavalent chromium, and/or petroleum hydrocarbons. These constituents pollute various sites throughout the Central Valley Region and cause, or threaten to cause, adverse impacts to existing and potential beneficial uses of the region's groundwater resources. In many cases, in-situ cleanup of groundwater at these sites includes the use and application of chemical, biological, and physical treatment processes, such chemical oxidation, chemical reduction, nutrient or chemical addition for enhanced biodegradation, or groundwater pump and treat technology with the return of treated groundwater back to the same aquifer zone. The adoption of general WDRs for in-situ groundwater remediation/cleanup would: (a) provide a level of protection of water quality comparable individual, site-specific WDRs; (b) simplify the application process for dischargers; (c) allow more efficient use of Regional Board staff time; (d) reduce Regional Board time by enabling the Executive Office to notify the discharger of the applicability of the general WDRs; and (e) enhance the protection of surface water quality by eliminating the discharge of wastewater to surface waters. In addition, each individual in-situ cleanup project will be required to have complied with CEQA on a site-specific basis prior to being allowed to be covered under the general WDRs.

Contact Information
Alex MacDonald
Central Valley Regional Water Quality Control Board
11020 Sun Center Drive, Suite 200
Rancho Cordova, CA 95670

Phone : (916) 464-4625


Notice of Completion

Review Period Start
Review Period End
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Water Quality Water Supply
Reviewing Agencies
California Department of Conservation California Department of Fish and Wildlife, Habitat Conservation Planning California Department of Parks and Recreation California Department of Transportation, Division of Transportation Planning California Native American Heritage Commission California State Lands Commission Central Valley Flood Protection Board Department of Toxic Substances Control Department of Water Resources Resources Agency Resources, Recycling and Recovery State Water Resources Control Board, Divison of Financial Assistance

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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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