Waste Discharge Requirements for General Order for InSitu Groundwater Reclamation and Discharge of Extraction

Waste Discharge Requirements for General Order for InSitu Groundwater Reclamation and Discharge of Extraction

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, sulfate and/or petroleum hydrocarbons. These constituents pollute various sites throughout the Central Valley Regional 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) simply the application process for dischargers, c) allow more efficient use of Regional Board staff time, d) reduce Regional Board time by enabling the Executive Officer 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.

El Dorado, Placer, Sacramento

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Parks and Recreation, California Native American Heritage Commission (NAHC), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency

Waste Treatment:Other (In-Situ Groundwater / Various)

Regulatory Requirement

Cumulative Effects, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise