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Lower Minnesota Creek (USGS) <br />Surface Water Uualiry and Field Paameters <br />~I <br />,I 11 <br />u <br />C~ <br />C-6 <br />Mountain Coal West Elk Mine <br />Monitoring Location L, Minnesota Ck (USGS) Baseline 200 5 Water Year <br />DeSCfI lion UMIS Minimum Maximum Mean 5/1f2005 6/5/2005 t0/3/2005 <br />Field Parameters <br />FIOW Slaf(GeU a 4.32 NA OS9 <br />EIeClflcal COOduOllVl umh05/Cm 512 275 358 <br />H SU 7.63 7.8 7.63 <br />Tem erature (°C °C <br />Tem ereture (°F °F 48.2 44.4 52.0 <br />Comment <br />Lahorato Parameters' <br />Name of Certified lab ACZ <br />Lab Reference # L51469-09 <br />Sam le Date 6/5/2005 <br />Lab Test Date 6812005 <br />Sam led B <br />Alkalini Total CaC03 m 4 <br />Aluminum, dissolved m <br />Anions me A <br />Arsenic, dissolved m <br />Arsenic, total m A <br />Bicarbonate m 11 46 75 s0 <br />Boron, dissolved m /I <br />Cadmium, dissolved m A <br />Calcium, dissolved m 11 19.6 19.6 19.6 <br />Carbonate m A <br />Cation -Anion Balance <br />Cations me A <br />Chloride <br />Conductivi <br />C er, dissolved m A <br />umhoslcm <br />m A <br />152 z <br />803 t <br />350 <br />170 <br />Hardness m A 65 106 82 <br />H dioxide m /I <br />Iron, dissolved m /I 0.23 0.58 0.41 0.06 <br />Iron, total m /I 0.45 82 8.9 3.37 <br />Lead, dissolved m 0 <br />Ma nesium, dissolved m R 6.1 8.7 7.4 <br />Man aneSe, dI6501Ved m A 0.013 0.015 0.014 <br />Man anese, total m A 0.078 1.83 0.188 <br />Mercu ,total m /I <br />Mol bdenum, dissolved m !I <br />Nitrate as N ,dissolved m A <br />Nitrate/NiMte as N m B <br />Nitrite as N ,dissolved m A <br />H lab SU 7.9 <br />Phos hate m A <br />Phos horns Ortho ,dissolved m A <br />Potassium dissolved m A <br />Selenium, dissolved m 0 <br />Selenium, total m A <br />Sodium Absor lion Ratio SAR talc. 0.3 o.s o.a <br />Sodium, dissolved m 4 7.7 77 7 ~ <br />Sulfate m A zo so a0 <br />TDS Ratio talc. <br />TDS Calc. m ~ <br />TDS m fl 100 584 231 120 <br />TSS m A 16 1300 292 94 <br />inc, dissolved mg/I <br />'Baseline, W1' 2000, and WY 2001 data ado tetl from W WE. <br />ACZ -ACZ Laboratories, Inc., Steamboa t S rin s, CO <br />Ne alive values denote readin s below lab detection levels <br />NM • Not Measured <br /> <br />West Elk Mine <br />2005 Annual Hydrology Report MydroGeo, inc. <br />