SCH Number 2004091101

Title: Injection of Ozone at 76 Station No. 6907
Description: Under the oversight of the Regional Board, ConocoPhillips proposes to install and operate a C-Sparge™ system 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 [cfm]) 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 µm) of encapsulated ozone are introduced below the water table, where the oxidation reactions take place. Ten sparge points, integral to the C-Sparge™ system, will be used onsite within the dissolved-phase plume. Using a control panel with a built-in compressor and ozone generator, microbubbles of encapsulated ozone will be introduced into the subsurface through a given sparge point or points at flow rates ranging from 3 to 5 cfm. During sparging, no groundwater or vapors will be extracted. Sparging will be performed on cycled basis with each well cycled on for 5 to 10 minutes. Cycle times will be adjusted, as necessary, to optimize system efficiency.

2 documents in project

Type	Lead/Public Agency	Received	Title
NOD	Regional Water Quality Control Board, Region 4 (Los Angeles)	12/27/2004	Injection of Gaseous Ozone for the Remediation of Groundwater at a Site Referred to as the 76 Station #6907
NEG	Regional Water Quality Control Board, Region 4 (Los Angeles)	9/17/2004	Injection of Ozone at 76 Station No. 6907