Injection of Ozone at Venice McLaughlin Center

2 Documents in Project

Summary

SCH Number
2004061131
Lead Agency
Regional Water Quality Control Board, Region 4 (Los Angeles)
Document Title
Injection of Ozone at Venice McLaughlin Center
Document Type
NOD - Notice of Determination
Received
Posted
8/24/2004

Document Description
Under the oversight of the Regional Board, Stratus Environmental, Inc. on behalf of the facility and landowners, Mr. Larry Canchola and Mr. Mojdeh Daneshrad respectively, proposes to use C-Sparge™ to remediate the dissolved-phase petroleum hydrocarbon plume beneath the site. The C-Sparge™ technology combines low-flow (3 to 5 cubic feet per minute) air sparging with ozonation to oxidize petroleum hydrocarbons into benign byproducts, carbon dioxide and water. Ozone is generated onsite using a control panel with built-in compressor and ozone generator. Using perforated sparge points, microbubbles (10 to 50 micrometers in diameter) of encapsulated ozone are introduced below the water table, where the oxidation reactions take place. Four injection points, integral to the C-Sparge™ system, will be used onsite within and around the dissolved-phase plume. During the injection, no groundwater will be pumped. Sparging will be performed on a cycled basis with the well cycled on for 5 to 10 minutes. Cycle times (on and off times) will be adjusted, as necessary, to optimize system efficiency. During C-Sparge™ system operations, microbubbles of encapsulated ozone will be discharged into the subsurface beneath the site. No other known constituents will be discharged to the subsurface during system operations. The C-Sparge™ system will inject approximately five grams per hour of ozone at a flow rate of 3 to 5 cfm. Therefore, the total concentration of ozone injected into the subsurface during the system operations will be approximately 0.59 milligrams per liter.

Contact Information
Orlando H. Gonzalez
Regional Water Quality Control Board, Region 4 (Los Angeles)
320 West 4th Street, Suite 200
Los Angeles, CA 90013

Phone : (323) 620-2267

Location

Cities
Los Angeles Los Angeles, City of
Counties
Los Angeles
Cross Streets
McLaughlin
Zip
90066
Parcel #
9214-013-027

Notice of Determination

Approving Agency
California Regional Water Quality Control Board
Approving Agency Role
Lead Agency
Approved On
Final Environmental Document Available at
California Regional Water Quality Control Board Los Angeles Region, 320 W 4th Street, Suite 200 Los Angeles, California 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 Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
N/A
(5) A Statement of Overriding Considerations was adopted for this project
Yes
(6) Findings were made pursuant to the provisions of CEQA
N/A

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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