Analysis of 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.date.accessioned 2013-07-03T18:46:36Z
dc.date.available 2013-07-03T18:46:36Z
dc.date.issued 2007-03
dc.description Proceedings of the 2007 Georgia Water Resources Conference, March 27-29, 2007, Athens, Georgia. en_US
dc.description.abstract The U.S. Geological Survey has, during many years of environmental monitoring, developed quality-assurance and quality-control procedures to assist in the collection of accurate and representative water-quality data. Urban storm sampling typically is performed using one of two methods; the equal-width-increment method or the automated-point-sample method. Quality-control data (equipment blanks and concurrent samples) were collected from 1997 to 2006 at 12 watersheds in Gwinnett County, Georgia, to compare these methods and to evaluate the cleanliness of field procedures. Constituent concentrations in samples collected concurrently using both methods were compared to determine how representative point sample data were of cross-sectional stream conditions. Percent differences of concurrent-sample constituent concentrations were compared with storm size to identify bias or trend when collecting samples using the automated point-sample method. Data collected using the two different methods indicated that constituent concentrations in concurrent samples generally were within 10 percent. Constituent concentrations in equipment blanks typically were less than analytical method detection limits. en_US
dc.description.sponsorship Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, Natural Resources Conservation Service, The University of Georgia, Georgia State University, Georgia Institute of Technology en_US
dc.description.statementofresponsibility This book was published by the Institute of Ecology, The University of Georgia, Athens, Georgia 30602-2202. The views and statements advanced in this publication are solely those of the authors and do not represent official views or policies of The University of Georgia, the U.S. Geological Survey, the Georgia Water Research Institute as authorized by the Water Resources Research Act of 1990 (P.L. 101-397) or the other conference sponsors.
dc.embargo.terms null en_US
dc.identifier.uri http://hdl.handle.net/1853/48203
dc.language.iso en_US en_US
dc.publisher Georgia Institute of Technology en_US
dc.relation.ispartofseries GWRI2007. Riverbasin and Stream Studies en_US
dc.subject Water resources management en_US
dc.subject Water quality data en_US
dc.subject Urban storm sampling en_US
dc.subject Quality control data en_US
dc.subject Quality assurance procedures en_US
dc.subject Constituent concentrations en_US
dc.title Analysis of 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
relation.isOrgUnitOfPublication 8873b408-9aff-48cc-ae3c-a3d1daf89a98
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relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
relation.isSeriesOfPublication e0bfffc9-c85a-4095-b626-c25ee130a2f3
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