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Site Investigation & Remediation – VOC/ Cr(VI)

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2. Full-scale In situ Bio-treatment of VOCsNOREAS is supporting a (Global) Fortune 500 chemical company at a former manufacturing facility in Van Nuys, California. Soils at the site were impacted by VOCs at depths up to 150 feet below ground surface (bgs), and (Cr VI) at depths of up to 80 feet bgs (groundwater is at over 225 feet bgs). Groundwater investigation included installation of two angled wells to a depth of 225 feet bgs using a sonic rig. Two vertical wells were also installed. Using a sonic rig drilling vs. other methods allowed reduction in the volume of soil cuttings requiring disposal. Remedial activities include SVE for VOCs, and in situ chemical reduction (ISCR) for chromium with calcium polysulfide (CPS). The ISCR project was completed inside an active warehouse, entirely in the vadose zone, and involved injection of 170,000 gallons of CPS in a 60 x 60 feet area over a 4-month period. NOREAS submitted a soil-only closure request to the Regional Water Quality Board in 2009. Future activities include installation of additional groundwater monitoring wells to 250 feet bgs. NOREAS services on this project have included design, permitting, well installation, turnkey remediation, and regulatory interaction.

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ABOUT NOREAS

NOREAS provides scientific, technical, engineering, and construction management support to federal agencies, local governments, and utility companies, as well as a diverse group of private industries throughout California, Nevada, and Arizona.

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NOREAS, Inc. Orange County
Address: 16361 Scientific Way
Irvine, CA 92618
Phone: (949) 467.9100
Fax: (949) 398.8758
Email: RFI@noreasinc.com

NOREAS, Inc. San Diego
Address: 2534 State Street
San Diego, CA 92101
Phone: (619) 516-8181
FAX: (619) 557-8341
Email: RFI@noreasinc.com

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