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Spring G-22 <br />Water Quality and Field Parameters <br />• <br /> <br />Mountain Coal West Elk Mine <br />Monitoring Location Spring G-22 Baseline' 2009 Water Year <br />Description Units Minimum Maximum Mean 5/7/2009 6/2/2009 Q° 8/10/2009 <br />Field Parameters <br />Flow m 4.05 -20 2 <br />Electrical Conductivity µmhos/cm 1214 1172 1148 <br />H SU 7.22 7.47 7.99 <br />Temerature C) °C 7.7 7.8 16.7 <br />Comment <br />Laboratory Parameters <br />Name of Certified La ACZ <br />Lab Reference # L76166-05 <br />Sample Date 6/2/2009 <br />Lab Test Date 613-6/16 <br />Sampled B PH <br />Alkalinity (Total CaC03) mg/I <br />Aluminum, dissolved m /I <br />Anions me /I <br />Arsenic, dissolved m /I <br />Arsenic, total m /I <br />Bicarbonate m /I 287 359 332 <br />Boron, dissolved m /I <br />Cadmium, dissolved m /l <br />Calcium, dissolved m /I 64.9 64.9 64.9 <br />Carbonate m /I <br />Cation - Anion Balance m /I <br />Cations me /I <br />Chloride m /I 3 18 7 <br />Conductivity µmhos/cm 633 640 637 1130 <br />Copper, dissolved m /I <br />Hardness m /I 180 270 234 <br />Hydroxide m /I <br />Iron, dissolved m /I 0.05 0.01 -0.02 U <br />Iron, total m /I 0.2 0.08 0.13 <br />Lead, dissolved m /I 0.02 0.02 0.02 <br />Magnesium, dissolved m /I 19 19.9 19.5 <br />Manganese, dissolved m /I <br />Manganese, total m /I 0.85 0.11 <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />Nitrate as N), dissolved m /I <br />Nitrate/Nitrite as N m /I 0.08 0.08 0.08 <br />Nitrite as N), dissolved m /I <br />H SU 7 7.9 7.6 8.2 H <br />Phosphate m /I <br />Phosphorus Ortho , dissolved m /I 0.044 0.019 <br />Potassium, dissolved m /I <br />Selenium, dissolved m /I <br />Selenium, total m /I <br />Sodium Absorption Ratio SAR calc. 1.78 1.92 1.85 <br />Sodium, dissolved m /I 66.1 66.1 66.1 <br />Sulfate m /I 24 80 41 <br />TDS Ratio calc. <br />TDS Calc. m /I <br />TDS m /I 300 516 388 700 <br />TSS m /I 24 5 5 B <br />Zinc, dissolved mg/I <br />' Baseline pre -2000 data, adapted from WWE (2001) <br />2 ACZ Laboratory, Steamboat Springs, CO <br />3 Negative values denote readings below lab detection levels. <br />4 ACZ Lab Qualifiers: U - Analyte was analyzed for but not detected at the indicated MDL. <br />H - Holding time exceeded; pH is a field test with an immediate hold time. <br />B - Analyte conc detected at a value bet method detection limit (MDL) and practical quantitation limit (PQL). <br />West Elk Mine <br />E-13 2009 Annual Hydrology Report HydroGeo, Inc.