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Spring 26-1 <br />Water Quality and Field Parameters <br />• <br />• <br />• <br />Mountain Coal West Elk Mine <br />Monitoring Location Spring 261 Baseline' 2009 Water Year <br />Description Units Minimum Maximum Mean 5/9/2009 6/4/2009 Q° 8/9/2009 <br />Field Parameters <br />Flow m 43.5 35.3 4.02 <br />Electrical Conductivity mhos/cm 240 640 482 577 651 755 <br />H SU 7.3 8.1 7.7 7.75 7.82 68 <br />1= <br />Tpmnpraturp °C 6.8 6.7 .8 <br />6 <br />Name of Certified Lab` ACZ <br />Lab Reference # L76236-10 <br />Sample Date 6/4/2009 <br />Lab Test Date 6/5-6/15 <br />Sampled B PH <br />Alkalinity (Total CaCO3) mg/I 151 284 222 <br />Aluminum, dissolved m /I <br />Anions me /I 5.1 5.9 5.5 <br />Arsenic, dissolved m /I <br />Arsenic, total m /I <br />Bicarbonate m /I 151 284 222 <br />Boron, dissolved m /I <br />Cadmium, dissolved m /I <br />Calcium, dissolved m /I 24 37.2 31.5 <br />Carbonate m /I <br />Cation - Anion Balance % 1 3.3 2.15 <br />Cations me /I 5.2 6.3 5.75 <br />Chloride m /I 2 s 4.4 <br />Conductivity mhos/cm 480 548 514 606 <br />Copper, dissolved m /I <br />Hardness m /I 81 126 105 <br />Hydroxide m /I -0.02 U <br />Iron, dissolved m /I -0.02 U <br />Iron, total m /I 1.45 0.24 <br />Lead, dissolved m /I <br />Magnesium, dissolved m /I 5.1 8 6.7 <br />Manganese, dissolved m /I <br />Manganese, total m /I 0.028 0.004 <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />Nitrate as N), dissolved m /I <br />Nitrate/Nitrite as N m /I 0.14 0.31 0.19 <br />Nitrite as N), dissolved m /I <br />H SU 7.1 7.7 7.4 8.2 H <br />Phosphate m /I <br />Phosphorus Ortho , dissolved m /I 0.007 0.001 <br />Potassium, dissolved m /I 1.2 1.4 1.3 <br />Selenium, dissolved m /I <br />Selenium, total m /I 0.001 0.001 <br />Sodium Absorption Ratio SAR calc. 2.8 4.96 3.96 <br />Sodium, dissolved m /I 57.2 125 94.5 <br />Sulfate m /I 40 80 63.1 <br />TDS Ratio calc. <br />TDS Calc. m /I <br />TDS m /I 220 410 327 390 <br />TSS m /I 16 a -5 U <br />Zinc, dissolved mg/I 0.02 0.01 <br />Baseline pre -2000 data, adapted from VWVE (2001) <br />2 ACZ Laboratory, Steamboat Springs, CO <br />3 Negative values denote readings below lab detection levels. <br />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-6 2009 Annual Hydrology Report <br />HydroGeo, Inc.