01832nam 2200409 a 450 991070013720332120120329154757.0(CKB)5470000002407596(OCoLC)781967877(EXLCZ)99547000000240759620120329d2011 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierUse of diverse geochemical data sets to determine sources and sinks of nitrate and methane in groundwater, Garfield County, Colorado, 2009[electronic resource] /by P.B. McMahon, J.C. Thomas, and A.G. Hunt ; prepared in cooperation with the Colorado Department of Public Health and EnvironmentReston, Va. :U.S. Dept. of the Interior, U.S. Geological Survey,2011.1 online resource (v, 40 pages) illustrations (some color), color mapsScientific investigations report ;2010-5215Title from title screen (viewed on Mar. 29, 2012).Includes bibliographical references (pages 38-40).GroundwaterQualityColoradoGarfield CountyGroundwaterPollutionColoradoGarfield CountyGroundwaterQualityGroundwaterPollutionMcMahon Peter B1387740Thomas Judith Coffman1972-1396017Hunt Allen G(Allen Gerhard)292778Colorado.Department of Public Health and Environment.Geological Survey (U.S.)GPOGPOBOOK9910700137203321Use of diverse geochemical data sets to determine sources and sinks of nitrate and methane in groundwater, Garfield County, Colorado, 20093471509UNINA