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Lower Gibble Gulch <br />Surface Water Quality and Field Parameters <br />• <br /> <br />M <br />Mountain Coal West Elk Mine <br />Monitoring Location L. Gribble Gulch Baseline 2008 Water Year <br /> <br />Description <br />Units <br />Minimum <br />Maximum <br />Mean <br />5/7/2008 <br />6/9/2008 6/9/2008 <br />(Duplicate) <br />8/24/2008 <br />Field Parameters <br />Flow <br />Electrical Conductivity <br />H <br />m <br />umhos/cm <br />SU <br />841 <br />612 <br />8.08 <br />132 <br />761 <br />8.56 <br />132 <br />761 <br />8.56 <br />D <br />Temperature (°C) <br />Comment °C 8.6 14.1 14.1 <br />Laboratory Parameters3 <br />Name of Certified Lab z Enviro-Chem Enviro-Chem <br />Lab Reference # <br />Sample Date <br />Lab Test Date <br />Sampled B 08/970 <br />6/9/2008 <br />6/9-6/13 <br />P. Holier 08/971 <br />6/9/2008 <br />6/9-6/13 <br />P. Holder <br />Alkalinity (Total CaC03 m /I <br />Aluminum, dissolved m /I <br />Anions me /I <br />Arsenic, dissolved m /I <br />Arsenic, total m /I <br />Bicarbonate m /I 304 477 353 <br />Boron, dissolved m /I <br />Cadmium, dissolved m /I <br />Calcium, dissolved m /I <br />Carbonate m /I <br />Cation - Anion Balance % <br />Cations me /I <br />Chloride <br />Conductivity m /I <br />umhos/cm 3 <br />1250 5 <br />1250 4 <br />1250 <br />693.9 <br />695.1 <br />Copper, dissolved m /I <br />Hardness m /I 308 460 371 <br />Hydroxide <br />Iron, dissolved <br />Iron, total m /I <br />m q/1 <br />m /I <br /> <br />0.89 <br /> <br />0.44 <br />0.03 <br />1.11 <br />0.02 <br />0.93 <br />Lead, dissolved m /I <br />Lead, total m /I <br />Magnesium, dissolved m /I 32 39.7 35.9 <br />Manganese, dissolved m /I <br />Manganese, total m /I 0.015 0.008 <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />. <br />Nitrate as N m /l <br />Nitrate/Nitrite as N m /I 0.05 0.35 0.15 <br />Nitrite as N), dissolved <br /> <br />H lab <br />I <br />mg/ <br />SU <br /> <br />7.2 <br /> <br />7.2 <br /> <br />7.2 <br /> <br />8.33 <br /> <br />8.31 <br />Phosphate m /I <br />Phosphorus Ortho , dissolved mg/ I 0.006 0.002 <br />Potassium, dissolved m /I <br />Selenium, dissolved m /I <br />Selenium, total m /I <br />Sodium Absorption Ratio SAR calc. 0.86 2.5 1.5 <br />Sodium, dissolved m /I 80 260 135 <br />Sulfate m /I 400 780 590 <br />TDS Ratio calc. <br />TDS Calc. <br />TDS <br />TSS m /I <br />m /I <br />m /I <br />24 <br />60 <br />42 <br />490 <br />26 <br />492 <br />29 <br />Zinc, dissolved mg/I <br />Baseline and WY 2000 data adapted from WWE (2001). <br />2 Enviro-Chem Analytical, Grand Junction, CO <br />Zero values denote readings below lab detection levels (MDL). <br />West Elk Mine <br />C-12 2008 Annual Hydrology Report HydroGeo, Inc.