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Spring E10-2 <br />Water Quality and Field Parameters <br />• <br />• <br />• <br />Mountain Coal West Elk Mine <br />Monitoring Location Spring E10-2 Baseline' 2008 Water Year <br />Description Units Minimum Maximum Mean 5/6/2008 6/6/2008 8/23/2008 <br />Field Parameters <br />Flow m 3 Trickle Dry <br />Electrical Conductivity µmhos/cm 1374 1456 <br />H SU 7.67 8.16 <br />Temperature (°C) °C 10.5 17.9 <br />Comment <br />Laboratory Parameters3 <br />Name of Certified Lab Enviro-Chem <br />Lab Reference # 08/924 <br />Sample Date 6/6/2008 <br />Lab Test Date 6/9-7/3 <br />Sampled B P. Holder <br />Alkalinity (Total CaC03) mg/1 <br />Aluminum, dissolved MO <br />Anions me /l <br />Arsenic, dissolved m /l <br />Arsenic, total m /l <br />Bicarbonate m /I <br />Boron, dissolved MO <br />Cadmium, dissolved m /I <br />Calcium, total m /l <br />Calcium, dissolved m /l <br />Carbonate m /I <br />Cation - Anion Balance M q/1 <br />Cations me /I <br />Chloride m /I <br />Conductivity µmhos/cm 1298.76 <br />Copper, dissolved m /I <br />Hardness m /I <br />Hydroxide m /l <br />Iron, dissolved m /l 0.05 <br />Iron, total m /l 2.52 <br />Lead, dissolved m /l <br />Magnesium, dissolved m /I <br />Manganese, dissolved m /l <br />Manganese, total m /I <br />Mercury, total M g/1 <br />Molybdenum, dissolved m g/1 <br />Nitrate as N m /I <br />Nitrate/Nitrite as N m /l <br />Nitrite as N m /I <br />H S U 8.02 <br />Phosphate m /l <br />Phosphorus Ortho , dissolved m /I <br />Potassium, dissolved m /I <br />Selenium, total M q/1 <br />Sodium Absorption Ratio SAR calc. <br />Sodium, dissolved m /l <br />Sulfate m /I <br />TDS Ratio calc. <br />TDS Calc. mg/1 <br />TDS m /I 928 <br />TSS m /I 315 <br />Zinc, dissolved m /I <br />Zinc, total mg/l <br />Baseline pre -2000 data, adapted from WWE (2001) <br />2 Enviro-Chem Analytical, Grand Junction, CO <br />West Elk Mine <br />E-16 2008 Annual Hydrology Report HydroGeo, Inc.