2009-07-01_REPORT - C1980007 (8)

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Spring 13-3 Water Quality and Field Parameters CJ • Mountain Coal West Elk Mine Monitoring Location Spring 13-3 Baseline' 2008 Water Year Descri tion Units Minimum Maximum Mean 5/612008 6/2/2008 Enviro- Chem MDL 8/24/2008 Field Parameters Flow m 113 31 Trickle Electrical Conductivity umhos/cm 473 500 516 H SU 7.64 7.70 8.50 Temperature °C 6.3 6.1 15.5 Comment Laboratory Parameters3 Name of Certified Labz Enviro-Chem Lab Reference # 08/825 Sample Date 6/2/2008 Lab Test Date 6/9-6/27 Sampled By I P. Holder Alkalinity Total CaC03 m /l 114.76 2 Aluminum, dissolved m /I 0.42 0.01 Anions me /I 6.27 calc Arsenic, dissolved m /I Arsenic, total m /l 0.007 0.001 Bicarbonate m /I Boron, dissolved m /l 0.015 0.01 Cadmium, dissolved m /l 0.003 0.001 Calcium, dissolved m /l 54.2 0.1 Carbonate m /l Cation - Anion Balance m /I -9.1 calc Cations me /I 5.747 calc Chloride m /l 3.05 0.1 Conductivity umhos/cm 42828 1 Copper, dissolved m /I 0.004 0.002 Hardness m /I 209.79084 calc Hydroxide m /I Iron, dissolved m /l 0.013 0.01 Iron, total m /I 0.022 Lead, dissolved m /I 0 Magnesium, dissolved m /I 18.08 0 Manganese, dissolved m /I 0 9 Manganese, total m /I 0 Mercury, total m /I 0.00009 Molybdenum, dissolved m /I 0 Nitrate as N). dissolved m /I 0 00 .1134 Nitrate/Nitrite as N m /I 0 0.13 Nitrite as N), dissolved m /I 0 0.01 H SU 8.14 0.1 Phosphate m /I 0.01 0.01 Phosphorus Ortho , dissolved m /I 0.0107 0.01 Potassium, dissolved m /I 1.81 0.1 Selenium, total m g/1 0 0.001 Sodium Absorption Ratio SAR calc. 1.06 calc Sodium, dissolved m /I 34.7 0.1 Sulfate m g/1 101.67 2 TDS Ratio calc. 5.72 cale TDS Calc. m /I 328.79 2 TDS m g/1 311 2 TSS m /l 3 2 Zinc, dissolved mg/l 0.017 0.005 Baseline pre -2000 data, adapted from WWE (2001) 2 Enviro-Chem Analytical, Grand Junction, CO 'Zero values denote readings below lab detection levels (MDL). ' Enviro-Chem TDS Ratio calculation is [(TDS - TDS (Calc.)) / TDS)] ' 100 West Elk Mine E-4 2008 Annual Hydrology Report HydroGeo, Inc.