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Upper Deep Creek <br />Surface Water Quality and Field Parameters <br />• <br />i <br />Mountain Coal West Elk Mine <br />Monitoring Location: Upper Deep Cree k Baseline 20 08 Water Year <br />Description Units Minimum Maximum Mean 5/11/2008 6/8/2008 8/21/2008 <br />Field Parameters <br />Flow Staff Gua e <br />Flow cfs 39 16 0.82 <br />Electrical Conductivity umhos/cm 80 310 192 197 142 192 <br />pH SU 8.10 8.80 8.50 7.45 8.13 8.40 <br />Temperature CC) °C 0.2 18.6 10.0 7.7 9.9 14.7 <br />Comment <br />Laboratory Parameters <br />Name of Certified Lab z Enviro-Chem <br />Lab Reference # 08/944 <br />Sample Date 6/8/2008 <br />Lab Test Date 6/9-7/3 <br />Sampled B P. Holder <br />Alkalinity (Total CaCO3) m /I 160 103.4 <br />Aluminum, dissolved m /I <br />Anions meq/1 1.5 2.6 2.1 <br />Arsenic, Dissolved m /I <br />Arsenic, total m /l <br />Bicarbonate m /l 53 153 106.3 <br />Boron, dissolved m /l <br />Cadmium, dissolved m /l <br />Calcium, dissolved m /I 14 44.4 28.7 <br />Carbonate m /I 9 1.3 <br />Cation - Anion Balance % -3.4 -2 -2.7 <br />Cations me /I 1.4 2.5 2.0 <br />Chloride m /l 2 0.2 <br />Conductivity umhos/cm 139 242 191 125.78 <br />Copper, dissolved m /I <br />Hardness m /l 47 138 91 <br />Hydroxide m /I <br />Iron, dissolved m /l 0.02 0.04 0 0.13 <br />Iron, total m /I 0.14 9.43 2.63 5.47 <br />Lead, dissolved M g/1 <br />Lead, Total m /l <br />Magnesium, dissolved m /I 2.6 6.6 4.6 <br />Manganese, dissolved m q/1 0.007 0.004 <br />Manganese, total m /I 0.005 0.282 0 <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />Nitrate (as N), dissolved m /I <br />Nitrate/Nitrite (as N) m /I 0.05 0.01 <br />Nitrite (as N), dissolved m /I <br />pH (lab) <br />Phosphate SU <br />m /l 6.9 <br />0.12 8 <br />0.2 7.5 <br />0.16 7.55 <br />Phosphorus (Ortho), dissolved m /I 0.065 0.013 <br />Potassium, dissolved m /I 0.7 1.2 1.0 <br />Selenium, dissolved m /l <br />Selenium, total m /I <br />Sodium Absorption Ratio (SAR) calc. 0.32 0.77 0.6 <br />Sodium, dissolved m /l 7.9 20 13.8 <br />Sulfate m /I 30 10.8 <br />TDS Ratio calc. <br />TDS (Calc.) <br />TDS <br />TSS m /l <br />m /I <br />m /l <br />60 <br />210 <br />133 <br />106 <br />236 <br />Zinc, dissolved mg/I <br />Baseline and WY 2000 data adapted from WWE (2001). Shaded cells indicate value different from <br />AHR 2000 baseline value due to rounding. <br />2 Enviro-Chem Analytical, Grand Junction, CO <br />'Zero values denote readings below lab detection levels (MDL). <br />West Elk Mine <br />C-15 2008 Annual Hydrology Report HydroGeo, Inc.