Client Profile: Gasoline distributor/inactive automotive gasoline service station owner

Project Profile: The soil and groundwater at this site was contaminated with gasoline requiring an aggressive long-term soil and air vapor treatment system.

Project Summary: The targeted Statewide Health Standard goals at this site included attainment of methyl tertiary-butyl ether (MTBE) to the PA Medium Specific Concentrations for used aquifers at a residential property in groundwater. The TPE remedial system operated from July 2007 to December 2009, extracting soil vapor and groundwater from four recovery wells using a 25-hoursepower, oil-sealed, high-vacuum liquid ring pump (Dekker Vacuum Technologies™). Following extraction, groundwater and soil vapor are routed through an air/water separator, After separation, groundwater is passed through sediment filters using a 2-housepower contrifugal pump, and then treated with two 300-poind liquid-phase carbon units. The recovered soil vapor is treated with two 600-poing vapor-phase carbon units.

The TPE remedial System was installed in a trailer like the one shown in the photo to the right. The system was connected to the nearest electricity supply. Vapor-phase carbon units are black and can be seen on the outside of the remedial trailer.

Project Results: Approximately 124.410 gallons of groundwater was treated by the TPE remedial system. Concentrations for MTBE decreased approximately 89%.