Evaluation of purging methods when sampling for volatile organic compounds from low-yield monitoring Wells
type: CreativeWork
description: 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.).
abstract: 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.).
author: Halligan, William Lowry
language: English
date published: 1989-01-01T08:00:00Z
date modified: 2026-07-24T05:24:07Z
provider: University of Nevada - Las Vegas
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Nevada, Las Vegas

PropertyValue
property ID: DOI
value: 10.25669/lxjr-9jzk