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Spring G-14 <br />Water Quality and Field Parameters <br />• <br />• <br />Mountain Coal West Elk Mine <br />Monitoring Location Spring G-14 Baseline' 2009 Water Year <br />Description Units Minimum Maximum Mean 5/7/2009 5/24/2009 Q° 8/10/2009 <br />Field Parameters <br />Flow 913m 10.0 9.63 0.91 <br />Electrical Conductivity mhos/cm 1111 1105 1050 <br />H SU 7.80 7.72 8.32 <br />Temerature °C °C 7.2 6.9 15.0 <br />Comment <br />Laboratory Parameters' <br />Name of Certified Labz ACZ <br />Lab Reference # L76064-05 <br />Sample Date 5/24/2009 <br />Lab Test Date 5/29-6/5 <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 0.001 0.001 0.001 <br />Bicarbonate m /I 325 484 406 <br />Boron, dissolved m /I <br />Cadmium, dissolved m /I <br />Calcium, dissolved m /I 54.9 61.4 58.2 <br />Carbonate m /I <br />Cation - Anion Balance m /I <br />Cations me /I <br />Chloride m /I 2 14 6 <br />Conductivity mhos/cm 553 682 637 1090 <br />Copper, dissolved m /I <br />Hardness m /I 215 307 257 <br />Hydroxide m /I <br />Iron, dissolved m /I 0.11 0.02 -0.02 U <br />Iron, total m /I 3 0.1 0.05 B <br />Lead, dissolved m /I <br />Magnesium, dissolved m /I 21.5 29.8 24.6 <br />Manganese, dissolved m /I <br />Manganese, total m /I 0.03 0.003 <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />Nitrate as N), dissolved m /I <br />Nitrate/Nitrite as N m /I 0.12 0.21 0.16 <br />Nitrite as N), dissolved m /I <br />H SU 7.1 8.2 7.7 8.5 H <br />Phosphate m /I <br />Phosphorus Ortho , dissolved m /I 2.08 0.15 <br />Potassium, dissolved m /I <br />Selenium, dissolved m /I <br />Selenium, total m /I 0.001 0.001 0.001 <br />Sodium Absorption Ratio SAR calc. 2.22 3.11 2.53 <br />Sodium, dissolved m /I 81.3 114 97.7 <br />Sulfate m /I 40 150 88 <br />TDS Ratio calc. <br />TDS Calc. m /I <br />TDS m /I 324 708 499 650 <br />TSS m /I 107 51 1 -5 U <br />Zinc, dissolved mg/I <br />' Baseline pre -2000 data, adapted from WVVE (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-12 2009 Annual Hydrology Report HydroGeo, Inc.