Abstract
As part of a site remediation project, laboratory soil column experiments were conducted to evaluate the effectiveness of a field vapor extraction system. Different soil types were placed in specially designed soil columns and saturated with 1,1,1-Trichloroethane and Jet-A fuel. The soil columns were connected to a vacuum pump and removal rates were monitored using mass balance, a portable photoionization detector, and a gas chromatograph. Results of the laboratory experiments indicated that the technique is useful for designing and monitoring field vapor extraction systems. Guidelines were developed for flow rate versus removal times, the effects of varying lithologies on removal rates and efficiencies, and the removal characteristics of organic mixtures consisting of varying volatile components.
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