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Spring 24-3 <br />Water Quality and Field Parameters <br />• <br />• <br />• <br />Mountain Coal West Elk Mine <br />Monitoring Location Spring 24.3 Baseline' 2008 Water Year <br /> <br />Descri tion <br />Units <br />Minimum <br />Maximum <br />Mean <br />5/6/2008 <br />6/2/2008 Enviro- <br />Chem MDL <br />8/24/2008 <br />Field Parameters <br />Flow m 30 6.47 0.75 <br />Electrical Conductive umhos/cm 312 408 595 <br />H SU 7.65 7.77 8.31 <br />Temperature °C 4.6 5.6 10.1 <br />Comment <br />Laboratory Parameters; <br />Name of Certified Lab Enviro-Chem <br />Lab Reference # 08/823 <br />Sample Date 6/2/2008 <br />Lab Test Date 6/9-6/27 <br />Sampled B P. Holder <br />Alkaline Total CaCO3 m /I 64.08 2 <br />Aluminum, dissolved m /I 0.35 0.01 <br />Anions me /I 4.258 calc <br />Arsenic, dissolved m /I <br />Arsenic, total m /I 0.0049 0.001 <br />Bicarbonate m /I <br />Boron, dissolved m /I 0.015 0.01 <br />Cadmium, dissolved m /I 0.004 0.001 <br />Calcium, dissolved m /I 52.1 0.1 <br />Carbonate m /I <br />Cation -Anion Balance m /I 8.94 calc <br />Cations me /I 4.676 calc <br />Chloride m /I 2.61 0.1 <br />Conductive umhos/cm 364.94 1 <br />Copper, dissolved m /I 0.005 0.002 <br />Hardness m /I 177.53306 talc <br />Hydroxide m /I <br />Iron, dissolved m /I 0.031 0.01 <br />Iron, total m /I 0.77 0.01 <br />Lead, dissolved m /I 0.01 0.005 <br />Magnesium, dissolved m /I 11.52 0.1 <br />Manganese, dissolved m /I 0 0.005 <br />Manganese, total m /I 0.019 0.005 <br />Mercury, total m /I 0.00007 0.000025 <br />Molybdenum, dissolved m /I 0 0.01 <br />Nitrate as N), dissolved m /I f1 0.13 <br />Nitrate/Nitrite as N m /I cl 0.13 <br />Nitrite as N), dissolved m /I 0 0.01 <br />H SU 7.71 0.1 <br />Phosphate m /I 0.01 0.01 <br />Phosphorus Ortho , dissolved m /I 0 0.01 <br />Potassium, dissolved m /I 2.15 0.1 <br />Selenium, total m /I 0.0011 0.001 <br />Sodium Absorption Ratio SAR calc. 0.77 calc <br />Sodium, dissolved m /I 24.7 0.1 <br />Sulfate m /I 98.37 2 <br />TDS Ratio calc. 1.50 calc <br />TDS Calc. m /I 256.80 2 <br />TDS 11/ <br />E 253 253 2 <br />TSS m /I <br />- 81 2 <br />Zinc, dissolved mg/I 0.053 0.005 <br />' Baseline pre -2000 data, adapted from VWVE (2001) <br />2 Enviro-Chem Analytical, Grand Junction, CO <br />3 Zero values denote readings below lab detection levels (MDL). <br />5 Enviro-Chem TDS Ratio calculation is [(TDS - TDS (Calc.)) / TDS)] ` 100 <br />West Elk Mine <br />E-1 2008 Annual Hydrology Report HydroGeo, Inc.