Master of Science (MS)
First Committee Member
John W. Hess
Number of Pages
The purpose of this laboratory study was to determine the effects various purging procedures have on chlorobenzene and 1,1,1-Trichloroethane concentrations in a simulated monitoring well and how effective purging procedures were in providing representative samples. The experimental apparatus consisted of a teflon monitoring well complete with filter pack and bentonite seal constructed in a 10.2 cm diameter stainless steel screen and casing which acted as a "borehole" for the monitoring well. Low-permeability soil in a 25.4 cm diameter stainless screen surrounded the borehole and simulated an aquitard or low-permeability aquifer. This apparatus was placed in a tank filled with chlorobenzene and 1,1,1-Tricholorethane-spiked water. The experiments included the purging procedures mentioned above. Samples were collected before purging, during water-level recovery and 24 hours after purging. Contaminant concentrations within the tank were monitored before and after each experiment to establish a baseline in which to compare the sampling results of each purging experiment. (Abstract shortened with permission of author.).
Compounds; Evaluation; Low; Methods; Monitoring; Organic; Purging; Sampling; Volatile; Wells; Yield
University of Nevada, Las Vegas
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Halligan, William Lowry, "Evaluation of purging methods when sampling for volatile organic compounds from low-yield monitoring Wells" (1989). UNLV Retrospective Theses & Dissertations. 73.