Passive Soil Vapor Extraction
Source: Idaho National Engineering Laboratory
Date: 10/1/95    Record No.: 10228
Contact: Wayne Downs, 208-526-0754

Passive Soil Vapor Extraction
This process uses a check valve on a well head, and makes use of changes in atmospheric pressure to speed removal. For use at a site after vacuum extraction. Cheap and easy. In one current test, 2300 cu. ft/day of soil gas containing 300 grams/day of solvent are being vented. The full scale demonstration started in FY96. Currently looking for additional sites.(Environmental Assessment Technologies; Environmental Remediation)