LEADER 01832nam 2200409 a 450 001 9910700137203321 005 20120329154757.0 035 $a(CKB)5470000002407596 035 $a(OCoLC)781967877 035 $a(EXLCZ)995470000002407596 100 $a20120329d2011 ua 0 101 0 $aeng 135 $aurmn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aUse of diverse geochemical data sets to determine sources and sinks of nitrate and methane in groundwater, Garfield County, Colorado, 2009$b[electronic resource] /$fby P.B. McMahon, J.C. Thomas, and A.G. Hunt ; prepared in cooperation with the Colorado Department of Public Health and Environment 210 1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2011. 215 $a1 online resource (v, 40 pages) $cillustrations (some color), color maps 225 1 $aScientific investigations report ;$v2010-5215 300 $aTitle from title screen (viewed on Mar. 29, 2012). 320 $aIncludes bibliographical references (pages 38-40). 606 $aGroundwater$xQuality$zColorado$zGarfield County 606 $aGroundwater$xPollution$zColorado$zGarfield County 615 0$aGroundwater$xQuality 615 0$aGroundwater$xPollution 700 $aMcMahon$b Peter B$01387740 701 $aThomas$b Judith Coffman$f1972-$01396017 701 $aHunt$b Allen G$g(Allen Gerhard)$0292778 712 02$aColorado.$bDepartment of Public Health and Environment. 712 02$aGeological Survey (U.S.) 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910700137203321 996 $aUse of diverse geochemical data sets to determine sources and sinks of nitrate and methane in groundwater, Garfield County, Colorado, 2009$93471509 997 $aUNINA