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Technology Demonstration Summary: Terra Vac In Situ Vacuum Extraction System, Groveland, Massachusetts
Citation:
U.S. EPA. Technology Demonstration Summary: Terra Vac In Situ Vacuum Extraction System, Groveland, Massachusetts. U.S. Environmental Protection Agency, Washington, DC, EPA/540/S5-89/003, 1989.
Impact/Purpose:
to inform the public
Description:
Terra Vac Inc's vacuum extraction system was demonstrated at the Valley Manufactured Products Company, Inc., site in Groveland, Massachusetts. The property is part of the Groveland Wells Superfund site and is contaminated mainly by trichloroethylene (TCE). Vacuum extraction entails removal and venting of volatile organic constituents (VOCs) such as TCE from the vadose or unsaturated zone in the ground by use of extraction wells and vacuum pumps. The process of removing VOCs from the vadose zone using vacuum Is a patented process. The eight-week test run produced the following results: • extraction of 1,300 Ib of VOCs • a steady decline in the VOC recovery rate with time • a marked reduction in soil VOC concentration in the test area • an indication that the process can remove VOCs from clay strata This Summary was developed by EPA's Risk Reduction Engineering Laboratory, Cincinnati, OH, to announce key findings of the SITE program demonstration that is fully documented in two separate reports.