Quality-Assurance and Quality-Control Procedures for an Urban Water-Quality Monitoring Program, Gwinnett County, Georgia

dc.contributor.author Knaak, Andrew E.
dc.contributor.author Ankcorn, Paul D.
dc.contributor.corporatename Geological Survey (U.S.) en_US
dc.contributor.editor Hatcher, Kathryn J. en_US
dc.date.accessioned 2013-07-12T13:14:15Z
dc.date.available 2013-07-12T13:14:15Z
dc.date.issued 2003-04
dc.description Proceedings of the 2003 Georgia Water Resources Conference, held April 23-24, 2003, at the University of Georgia. en_US
dc.description.abstract The U.S. Geological Survey develops quality-assurance and quality-control procedures so that its water-quality data are of the highest possible quality and represent stream conditions. These procedures include personnel training, database management, cleaning equipment, blank sampling, concurrent point and cross-section sampling, concurrent replicate samples, and split replicate samples. The U.S. Geological Survey and Gwinnett County Watershed Monitoring program require one of two methods when collecting water-quality samples: the Equal-Width Increment (EWI) method or automatic point sampler method. In order to obtain a representative sample during a storm, it is preferable to collect samples using the EWI method. This method collects several points along the stream cross section and at several times during the storm hydrograph. Because of the large labor requirements and difficulty in sampling storm flows consistently, EWI samples are often not practical; an alternative is to obtain a composite sample that represents the entire hydrograph using an automatic point sampler. The USGS uses quality-assurance and quality-control procedures in the Gwinnett County Watershed Monitoring program to assure that automatic point samples provide accurate, uncontaminated, and representative EWI samples. en_US
dc.embargo.terms null en_US
dc.identifier.isbn 0935835083
dc.identifier.uri http://hdl.handle.net/1853/48349
dc.language.iso en_US en_US
dc.publisher Georgia Institute of Technology en_US
dc.publisher.original Institute of Ecology en_US
dc.relation.ispartofseries GWRI2003. Monitoring and Flint River en_US
dc.subject Water resources management en_US
dc.subject Urban water quality en_US
dc.subject Water quality monitoring en_US
dc.subject Gwinnett County watershed en_US
dc.subject Equal-width increment method en_US
dc.title Quality-Assurance and Quality-Control Procedures for an Urban Water-Quality Monitoring Program, Gwinnett County, Georgia en_US
dc.type Text
dc.type.genre Proceedings
dspace.entity.type Publication
local.contributor.corporatename Georgia Water Resources Institute
local.contributor.corporatename School of Civil and Environmental Engineering
local.contributor.corporatename College of Engineering
local.relation.ispartofseries Georgia Water Resources Conference
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relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
relation.isSeriesOfPublication e0bfffc9-c85a-4095-b626-c25ee130a2f3
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