01959oam 2200529 450 991070354150332120221205101006.0(CKB)5470000002432287(OCoLC)902655082(EXLCZ)99547000000243228720150202d2014 ua 0engurcn||||a||||rdacontentrdamediardacarrierWater quality in the principal aquifers of the Piedmont, Blue Ridge, and Valley and Ridge regions, eastern United States, 1993-2009 /by Bruce D. Lindsey, Tammy M. Zimmerman, Melinda J. Chapman, Charles A. Cravotta III, and Zoltan SzaboReston, Virginia :U.S. Geological Survey,2014.1 online resource (viii, 107 pages) color illustrations, color mapsCircular / U.S. Geological Survey ;1354Includes bibliographical references (pages 89-92).Quality of our nation's watersWater qualityEast (U.S.)GroundwaterQualityEast (U.S.)GroundwaterQualityfastWater qualityfastUnited States, EastfastWater qualityGroundwaterQualityGroundwaterQuality.Water quality.Lindsey Bruce D.1962-1391410Zimmerman Tammy M.Chapman M. J(Melinda J.),Cravotta Charles A.Szabo Zoltan1959-National Water-Quality Assessment Program (U.S.)Geological Survey (U.S.),OREOREOLAOCLCFGPOBOOK9910703541503321Water quality in the principal aquifers of the Piedmont, Blue Ridge, and Valley and Ridge regions, eastern United States, 1993-20093536443UNINA