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Source Cleanup
As significant areas of soil and groundwater contamination warranting cleanup are discovered, EPA and the Los Angeles Regional Water Quality Control Board continue to oversee the potentially responsible parties' cleanup efforts.
To date, over 100 million gallons of contaminated groundwater has been treated, over 17,000 pounds of hydrocarbons have been removed using soil vapor extraction (SVE), and over 4100 cubic yards of contaminated soil has been excavated and removed. Below are photos from some of the soil cleanup activities.
Soil Cleanup Activities
(Click on Photos for a larger view.)
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Soil Vapor Extraction System installation on a site at the intersection of Sepulveda and Palms. |
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Soil Vapor Extraction equipment prior to installation at the intersection of Venice and Sepulveda. |
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Daylighting of an Underground Storage System at the intersection of Centinela and Palms. |
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Soil excavation at the intersection of Sepulveda and Palms. |
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EPA oversight of excavation activities. |
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Underground storage tank removal. |
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Schematic diagram of a soil vapor extraction system (PDF) (31K, About PDF) . |
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Soil vapor extraction piping at the intersection of Venice and Sepulveda. |
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Demolition of Service Station at Venice and Sepulveda |
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Soil excavation by pattern drilling at the intersection of Washington and Sepulveda. |
Groundwater Cleanup
The contaminated groundwater is being extracted, treated, and discharged. The groundwater is treated using a variety of technologies including air stripping, carbon adsorption, and ultraviolet oxidation. Below are links to photos of groundwater treatment systems operated or under construction within the Charnock Sub-basin:
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Groundwater treatment system at the intersection of Venice and Sepulveda. |
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Groundwater treatment system at Tuller Avenue near Venice Blvd. |
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Service station with Tuller Avenue Treatment System in the background |
See Also: Photo history of investigation and cleanup of Site 23