2009-07-01_REPORT - C1980007 (8)

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Spring G-49 Water Quality and Field Parameters • • 0 Mountain Coal West Elk Mine Monitoring Location Spring G-49 Baseline' 2008 VVater Year Description Units Minimum Maximum Mean 5/7/2008 6/9/2008 8/24/2008 Field Parameters Flow m 8.9* 6 3.1 Electrical Conductivity mhos/cm 1752 1630 1950 H SU 7.19 7.75 7.59 Temperature (°C) °C 10.8 8.7 10.2 Comment '-10 gpm extra flow not measured from around spring house Laboratory Parameters' Name of Certified Labz Enviro-Chem Lab Reference # 08/965 Sample Date 6/9/2008 Lab Test Date 6/9-6/13 Sampled B P. Holder Alkalinity (Total CaC03) mg/I Aluminum, dissolved m /I 0.06 0.06 0.06 Anions me /I Arsenic, dissolved m /I Arsenic, total m /I Bicarbonate m /I 138 478 395 Boron, dissolved m /I Cadmium, dissolved m /I Calcium, dissolved m /I Carbonate m /I Cation - Anion Balance m /I Cations me /I Chloride m /I 2 16 12 Conductivity mhos/cm 317 1800 1059 1286.7 Copper, dissolved m /I Hardness m /I 81 877 584 Hydroxide m /I Iron, dissolved m /I 0.02 0.08 0.05 0.02 Iron, total m /I 0.01 22.6 2.57 1.16 Lead, dissolved m /I Magnesium, dissolved m /I 113 113 113 Manganese, dissolved m /I Manganese, total m /I 0.502 0.056 Mercury, total m /I Molybdenum, dissolved m /I Nitrate as N m /I Nitrate/Nitrite as N m /I 0.35 0.22 Nitrite as N m /I H SU 7.9 8.3 8.1 7.43 Phosphate m /I Phosphorus Ortho , dissolved m /I 0.032 0.004 Potassium, dissolved m /I Selenium, dissolved m /I Selenium, total m /I Sodium Absorption Ratio SAR ca1c. 2.35 4.59 3.12 Sodium, dissolved m /I Sulfate m /I 60 906 633 TDS Ratio calc. TDS Calc. m /I TDS m /I 230 1720 1280 1148 TSS m /I 8 724 366 20 Zinc, dissolved mg/I Baseline pre -2000 data, adapted from VVWE (2001) z Enviro-Chem Analytical, Grand Junction, CO West Elk Mine E-27 2008 Annual Hydrology Report HydroGeo, Inc-