2009-07-01_REPORT - C1980007 (8)

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Spring G-14 Water Quality and Field Parameters • • 0 Mountain Coal West Elk Mine Monitoring Location Spring G-14 Baseline' 2008 Water Year Descri tion Units Minimum Maximum Mean 5/9/2008 6/6/2008 Enviro- Chem MDL 8/23/2008 Field Parameters Flow m 14 8.7 0.7 Electrical Conductivity µmhos/cm 1172 1135 1140 H SU 7.24 7.77 7.91 Temerature (oC) oC 7.1 7.3 8.3 Comment Laboratory ParameterS3 Name of Certified Lab Enviro-Chem Lab Reference # 08/915 Sample Date 6/6/2008 Lab Test Date 6/9-7/3 Sampled B P. Holder Alkalinity (Total CaC03) mg/I Aluminum, dissolved m /I Anions me /I Arsenic, dissolved m /I Arsenic, total m /I 0.001 0.001 0.001 Bicarbonate mg/ I 325 484 406 Boron, dissolved m /I Cadmium, dissolved m /I Calcium, dissolved m /I 54.9 61.4 58.2 Carbonate m /I Cation - Anion Balance m /I Cations me /I Chloride m /I 2 14 6 Conductivity µmhos/cm 553 682 637 855.16 1 Copper, dissolved m /I Hardness m /I 215 307 257 Hydroxide m /I Iron, dissolved mg/ I 0.11 0.02 0.03 0.01 Iron, total m /I 3 0.1 0.46 0.01 Lead, dissolved m /I Magnesium, dissolved m /I 21.5 29.8 24.6 Manganese, dissolved m /I Manganese, total m /I 0.03 0.003 Mercury, total m /I Molybdenum, dissolved m /I Nitrate as N), dissolved m /I Nitrate/Nitrite as N m /I 0.12 0.21 0.16 Nitrite as N), dissolved m /I H SU 7.1 8.2 7.7 7.66 0.1 Phosphate m /I Phosphorus Ortho , dissolved m /I 2.08 0.15 Potassium, dissolved m /I Selenium, dissolved m /I Selenium, total m /I 0.001 0.001 0.001 Sodium Absorption Ratio SAR calc. 2.22 3.11 2.53 Sodium, dissolved m /I 81.3 114 97.7 Sulfate m /I 40 150 88 TDS Ratio calc. TDS Calc. m /I TDS m /I 324 708 499 1 1 698 2 TSS mg/ I 107 5 0 2 Zinc, dissolved mg/I 1 Baseline pre -2000 data, adapted from VV1NE (2001) 2 Enviro-Chem Analytical, Grand Junction, CO 3 Zero values denote readings below lab detection levels (MDL). s Enviro-Chem TDS Ratio calculation is [(TDS - TDS (Calc.)) / TDS)] ' 100 West Elk Mine E-12 2008 Annual Hydrology Report HydroGeo, Inc.