Bioaugmentation of Volatile Organic Compounds In Groundwater, Former NASA Industrial Plant, Downey, California.

2 Documents in Project

Summary

SCH Number
2010041092
Lead Agency
Regional Water Quality Control Board, Region 4 (Los Angeles)
Document Title
Bioaugmentation of Volatile Organic Compounds In Groundwater, Former NASA Industrial Plant, Downey, California.
Document Type
NOD - Notice of Determination
Received

Document Description
Under the oversight of this Regional Board, International Rish Assessment-Downey, LLC (IRAD, Discharger) has been conducting the investigation, remediation and monitoring of soil and groundwater contamination at the subject site. IRAD, through its environmental contractor ARCADIS, has been operating a side-wide in situ reactive zone (IRZ) system since November 2005 to remediate the VOC-impacted groundwater. The IRZ system promotes enhanced reductive dechlorination (RED) of chlorinated solvents by biostimulation of the native microbial community. This groundwater remediation process is currently carried out through injecting carbohydrate solution quarterly into the VOC-impacted groundwater under Waste Discharge Requirements (WDR), Order No. R4-2002-0030, CI No. 8724, issued by this Regional Board to IRAD. Although the current IRZ system has significantly reduced TCE concentrations in the center of the plume, performance monitoring data indicate that complete reductive dechlorination is not occuring efficiently in the vicinity of Line 1000 becuase of the presence of cis-1,2-DCE and vinyl chloride, and lack of significant ethane production. To further enahnce late-stage dechlorination in the Line 100, IRAD proposes to use bioaugmentation with selected bacteria cultures SDC-9TM or KB-1TM in addition to the current IRZ system, and submitted a report of waste discharge and an initial study for the proposed remediation activities.

Contact Information
G. Jeffrey Hu
Regional Water Quality Control Board, Region 4 (Los Angeles)
320 West 4th Street, Suite 200
Los Angeles, CA 90013

213-576-6600

Location

Cities
Downey
Counties
Los Angeles
Cross Streets
Lakewood Blvd and Alameda
Zip
90242
Total Acres
~155
Parcel #
6256-004-036
State Highways
105
Schools
Warren HS

Notice of Determination

Approving Agency
California Regional Water Quality Control Board
Approving Agency Role
Lead Agency
Approved On
Final EIR Available Location
California Regional Water Quality Control Board Los Angeles Region 320 W. 4th Street, Suite 200 Los Angeles, CA 90013

Determinations

(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A Statement of Overriding Considerations was adopted for this project
No
(5) Findings were made pursuant to the provisions of CEQA
No
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