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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' 2007 Water Year <br /> <br />Description <br />Units <br />Minimum <br />Maximum <br />Mean <br />4/25/2007 <br />5/24/2007 <br />Q4 5/24/07 <br />(Duplicate) <br />Q4 <br />8/22/2007 <br />Field Parameters <br />Flow m 10 8 8 1 <br />Electrical Conductivity µmhos/cm 772 1313 1313 1290 <br />H SU 7.41 7.66 7.66- 7.71 <br />Temperature °F OF 53.9 53.8 53.8 71.2 <br />Temerature °C °C 12.1 12.1 21.8 <br />Comment <br />Laboratory Parameters' <br />Name of Certified Labe ACZ ACZ <br />Lab Reference # L62832-06 L62832-07 <br />Sample Date 5/24/2007 5/24/2007 <br />Lab Test Date 5/29-6/9 5/29-6/9 <br />Sampled B <br />Alkalinity (Total CaC03) mg/I <br />Aluminum, dissolved m q/1 <br />Anions me /l <br />Arsenic, dissolved m /I <br />Arsenic, total m /l <br />Bicarbonate m /I 297 359 332 <br />Boron, dissolved M q/1 <br />Cadmium, dissolved m /I <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 1180 1180 <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 0.08 0.08 <br />Iron, total m /I 0.2 0.08 0.66 0.43 <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 8.2 H <br />Phosphate m /l <br />Phosphorus Ortho , dissolved m /I 0.044 0.019 <br />Potassium, dissolved m /l <br />Selenium, dissolved m q/1 <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 Ca1c. m /I <br />TDS m /I 300 516 388 7701 1 780 <br />TSS m /I 24 5 361 1 26 <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 />E-13 West Elk Mine <br />2007 Annual Hydrology Report HydroGeo, Inc.