Central Area In-Situ Remediation Pilot Study Project

4 Documents in Project


SCH Number
Lead Agency
Regional Water Quality Control Board, Region 6 (Lahontan), South Lake Tahoe (Regional Water Quality Control Board, Region 6 (Lahontan))
Document Title
Central Area In-Situ Remediation Pilot Study Project
Document Type
NEG - Negative Declaration
Present Land Use
Test Cell 3- RL- 5

Document Description
The proposed project involves implementation of a pilot study to evaluate in-situ (below ground surface) remediation technology in a controlled test cell as part of the development of a long-term strategy for remediation of groundwater containing chromium at the Hinkley Compressor Station (the site). The site is located east of the community of Hinkley in San Bernardino County in the Harper Valley Subarea of the Mohave Hydrologic Unit. The proposed pilot study will evaluate in-situ biological reduction of hexavalent [Cr(VI)] to trivalent chromium [Cr(III)] using cross-gradient groundwater recirculation. Reduced conditions will be created from injecting food-grade carbon sources, such as lactate, whey, and emulsified vegetable oil, into the aquifer at the Central Area of the Cr(VI) plume. Prior laboratory and field studies have shown that these injections do not create harmful or long-lasting environmental conditions affecting water quality or public health and safety.

Contact Information
Lisa Dernbach
Regional Water Quality Control Board, Region 6 (Lahontan)
2501 Lake Tahoe Boulevard
South Lake Tahoe, CA 96150

Phone : (530) 542-5424


San Bernardino
Cross Streets
Frontier Road/ Fairview Road
Total Acres
Parcel #
0494-251-15, -03
State Highways
Hinkley Elem
Mojave River
Other Location Info

Notice of Completion

Review Period Start
Review Period End
Development Type
Waste Treatment:Other (metals)
Local Action
Other Action Other Action: well permit
Project Issues
Air Quality Biological Resources Noise Toxic/Hazardous Traffic/Circulation Water Quality Water Supply Cumulative Effects
Reviewing Agencies
California Department of Health Care Services California Department of Parks and Recreation California Department of Transportation, District 8 California Native American Heritage Commission California State Lands Commission Colorado River Board Department of Fish and Wildlife, Region 6 Department of Toxic Substances Control Department of Water Resources Resources Agency State Water Resources Control Board, Division of Water Quality 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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