{"id":{"repo_id":"unlv","oai_identifier":"oai:oasis.library.unlv.edu:rtds-1037"},"canonical_url":"https://search.dev.ndltd.org/etd/unlv/oai:oasis.library.unlv.edu:rtds-1037","repository":{"repo_id":"unlv","name":"University of Nevada - Las Vegas","base_url":"https://oasis.library.unlv.edu/do/oai/"},"display":{"title":"Field comparison of groundwater sampling methods","abstract":"Most ground-water sampling methods require the investigator to purge a large quantity of stagnant water from a well prior to collecting a sample. The use of in situ ground-water sampling devices which minimize or eliminate the need for purging would help to alleviate these problems. In this field comparison study, the performances of seven ground-water sampling devices, including two in situ sampling systems, were evaluated to determine if these devices would yield accurate, precise, and representative data. The sampling devices included a bladder pump, a bladder pump below an inflatable packer, a bailer, the Westbay{dollar}\\sp\\circler{dollar} Mp System, two in situ BAT{dollar}\\sp\\circler{dollar} devices, and a BAT{dollar}\\sp\\circler{dollar} well probe. The sampling devices were installed at a site contaminated by a benzene-chlorobenzene plume, and the comparison was based on the ability of the devices to recover \"representative\" concentrations of these volatile organic compounds. (Abstract shortened with permission of author.).","abstract_html":"Most ground-water sampling methods require the investigator to purge a large quantity of stagnant water from a well prior to collecting a sample. The use of in situ ground-water sampling devices which minimize or eliminate the need for purging would help to alleviate these problems. In this field comparison study, the performances of seven ground-water sampling devices, including two in situ sampling systems, were evaluated to determine if these devices would yield accurate, precise, and representative data. The sampling devices included a bladder pump, a bladder pump below an inflatable packer, a bailer, the Westbay{dollar}\\sp\\circler{dollar} Mp System, two in situ BAT{dollar}\\sp\\circler{dollar} devices, and a BAT{dollar}\\sp\\circler{dollar} well probe. The sampling devices were installed at a site contaminated by a benzene-chlorobenzene plume, and the comparison was based on the ability of the devices to recover "representative" concentrations of these volatile organic compounds. (Abstract shortened with permission of author.).","abstract_has_math":false,"creators":["Blegen, Ronald Paul"],"institution":"University of Nevada, Las Vegas","degree_name":"Master of Science (MS)","degree_level":"Thesis","degree_discipline":"Geoscience","degree_department":null,"school":null,"contributors":["John W. Hess"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1989,"date_issued":"1989-01-01T08:00:00Z","date_published":"1989-01-01T08:00:00Z","updated_at":"2026-07-24T05:23:59Z","subjects":[],"languages":["English"],"rights":["IN COPYRIGHT. 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The sampling devices included a bladder pump, a bladder pump below an inflatable packer, a bailer, the Westbay{dollar}\\sp\\circler{dollar} Mp System, two in situ BAT{dollar}\\sp\\circler{dollar} devices, and a BAT{dollar}\\sp\\circler{dollar} well probe. The sampling devices were installed at a site contaminated by a benzene-chlorobenzene plume, and the comparison was based on the ability of the devices to recover \"representative\" concentrations of these volatile organic compounds. (Abstract shortened with permission of author.)."]},{"key":"dc:format","label":"Dc Format","values":["pdf"]},{"key":"dc:title","label":"Title","values":["Field comparison of groundwater sampling methods"]}]}],"canonical_facts":{"dc:contributor":["John W. Hess"],"dc:creator":["Blegen, Ronald Paul"],"dc:description.abstract":["Most ground-water sampling methods require the investigator to purge a large quantity of stagnant water from a well prior to collecting a sample. The use of in situ ground-water sampling devices which minimize or eliminate the need for purging would help to alleviate these problems. In this field comparison study, the performances of seven ground-water sampling devices, including two in situ sampling systems, were evaluated to determine if these devices would yield accurate, precise, and representative data. The sampling devices included a bladder pump, a bladder pump below an inflatable packer, a bailer, the Westbay{dollar}\\sp\\circler{dollar} Mp System, two in situ BAT{dollar}\\sp\\circler{dollar} devices, and a BAT{dollar}\\sp\\circler{dollar} well probe. The sampling devices were installed at a site contaminated by a benzene-chlorobenzene plume, and the comparison was based on the ability of the devices to recover \"representative\" concentrations of these volatile organic compounds. 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