2009-07-01_REPORT - C1980007 (8)

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Deep Creek Trail Spring Water Quality and Field Parameters • W • Mountain Coal West Elk Mine Monitoring Location : Deep Creek Trail Spring Baseline' 2008 Water Year Descri tion Units Minimum Maximum Mean° 5/11/2008 6/8/2008 Enviro- Chem MDL 8/21/2008 Field Parameters Flow m 1.24 3.51 1.63 219 16.0 2.27 Electrical Conductivity umhos/cm 400 479 461.14 279 343 447 H SU 7.72 8.07 7.86 7.49 7.89 7.93 Temperature oC 5.8 11.8 8.10 5.9 6.1 9.4 Temperature OF 42.4 53.2 46.6 Comment Laboratory Parameters 3 Name of Certified Lab Enviro-Chem. Lab Reference # 08/942 Sample Date 6/8/2008 Lab Test Date 6/9-7/31 Sampled B P. Holder Alkalinity Total CaC03 m /I 161 236 211 136.72 2 Aluminum, dissolved m /I -0.03 0.11 -0.04 0.167 0.01 Anions me /I 3.7 4.9 4.5 3.677 calc Arsenic, dissolved m /I Arsenic, total m /I -0.0005 -0.0005 -0.0005 0.026 0.001 Bicarbonate m /I 156 232 208 Boron, dissolved m /I 0.02 0.02 0.02 0.33 0.01 Cadmium, dissolved m /I -0.005 -0.005 -0.005 0 0.001 Calcium, dissolved m /I 29.4 40.3 37.4 35.2 0.1 Carbonate m /I -2 7 a Cation - Anion Balance m /I -1.1 9.5 2.2 6.58 talc Cations me /I 3.7 5.2 4.7 3.936 calc Chloride m /I 1 2 2 1.76 0.1 Conductivity umhos/cm 357 463 440 332.13 1 Copper. dissolved m /I -0.01 0.02 -0.01 0.027 0.002 Hardness m /I 96 123 116 118.44996 calc Hydroxide m /I -2 -2 -2 Iron, dissolved m /I -0.02 0.14 -0.05 0.01 0.01 Iron, total m /I 0.14 1.63 0.79 0.5 0.01 Lead, dissolved m /I -0.04 -0.04 -0.04 0.006 0.005 Magnesium, dissolved m /I 5.2 6 5.56 7.42 0.1 Manganese, dissolved m /I -0.005 -0.005 -0.005 0.003 0.005 Manganese, total m /I -0.005 0.024 -0.012 0.005 0.005 Mercury, total m /I -0.0002 -0.0002 -0.0002 0.00006 0.000025 Molybdenum, dissolved m /I -0.01 -0.01 -0.01 0.003 0.01 Nitrate as N), dissolved m /I 0 0.13 Nitrate/Nitrite as N m /I -0.02 1.51 -0.66 0 0.13 Nitrite as N), dissolved m /I 0 0.01 H SU 8.3 8.4 8.4 8.08 0.1 Phosphate m /I -0.03 0.15 -0.05 0 0.01 Phosphorus Ortho , dissolved m /I -0.01 0.05 -0.02 0.01 Potassium, dissolved m /I 1 1.1 1.04 1.63 0.1 Selenium, total m /I -0.001 -0.001 -0.001 0.005 0.001 Sodium Absorption Ratio SAR calc. 1.85 2.47 2.22 1.379 calc Sodium, dissolved m /I 41.2 62 54.6 34.5 0.1 Sulfate m /I 10 20 14 12.35 2 TDS Ratio calc. 0.98 1.16 1.05 5.81 calcs TDS Calc. m /I 198 262 243 230.66 2 TDS m /I 230 270 253 218 2 TSS m /I -5 60 20 9 2 Zinc, dissolved mg/I -0.01 0.02 -0.01 0 0.005 ' Baseline 2007 2 Enviro-Chem Analytical, Grand Junction, CO 3 Zero values denote readings below lab detection levels (MDL). Average (mean) value calc using 1/2 of detection limit for readings below lab detection limits unless all readings are below lab detection limit s Enviro-Chem TDS Ratio calculation is [(TDS - TDS (Calc.)) / TDS)] ' 100 West Elk Mine E-34 2008 Annual Hydrology Report HydroGeo, Inc.