Master of Science (MS)
First Committee Member
Number of Pages
Purging method, sampling time, and screen length were compared to determine their impact on the collection of representative ground-water samples from monitoring wells sited in an aquitard contaminated with volatile organic compounds (VOC); Two well-purging methods--(1) pump to the bottom of the screened interval and (2) pump to the top of the screened interval--were evaluated on three monitoring wells with different screened intervals (0.75-m and 3.0-m screen lengths); Monitoring wells completed in an aquitard should be purged before collecting ground-water samples for VOC analysis. Samples collected 2-8 hours after purging were statistically similar and representative of the highest VOC concentrations attained in the well. VOC concentrations detected in a long-screen (3.0-m) well were significantly impacted by the purging method used. Variation in purging method did not significantly impact VOC concentrations in samples collected from the short-screen (0.75-m) Wells (Abstract shortened with permission of author.).
Aquitard; Compounds; Evaluation; Field; Length; Method; Organic; Purging; Sampling; Screen; Time; Volatile
Hydrology; Geology; Geochemistry
University of Nevada, Las Vegas
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Alduino, Amy Josephine, "Sampling for volatile organic compounds from an aquitard: A field evaluation of screen length, purging method, and sampling time" (1991). UNLV Retrospective Theses & Dissertations. 156.