Cuyama Case Study (Ex Situ Gas Thermal Remediation(GTR™))

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Courtesy of GEO Inc

Ex Situ Thermal Desorption was used to successfully treat TPH-d and TPH-g from a former AST spill site in the agricultural zone in Central California. Affected soils were excavated and then placed “in a pile”, and Gas Thermal Remediation (GTR©) horizontal wells were placed into the pile during its three day construction. The piled soils represented mixed sands and high TOC soils, totaling a treatment volume of 77,692 ft3.

Soil samples were collected from the excavation pit and revealed TPH-d concentrations of 2,340 mg/kg. A total of approximately 20,000 cubic yards of diesel impacted soil was removed from the vadose zone.

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