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Lower North Fork <br />Surface Water Quality and Field Parameters <br />• <br />• <br />E <br />Mountain Coal West Elk Mine <br />20 <br />08 Water Yea <br />r <br />Monitoring Location N. Fork Lower B aseline Enviro- <br /> Chem <br /> Units Minimum Maximum Mean 5/9/2008 6/6/2008 8/5/2008 8/20/2008 MDL <br />Description <br />Field Parameters <br />Flow <br />Electrical Conductivit cfs <br />umhos/cm <br />162 <br />122 <br />151 <br />154 <br />58 <br />8 <br /> SU 7.74 8.29 8.61 . <br />H <br />Temperature °C °C 5.8 11.6 17.0 19.3 <br />Comment <br />Parameters <br />Laborato <br />Enviro-Chem <br />Enviro-Chem <br />Enviro-Chem <br />Name ortified Lab <br />f Ce 08/926 08/1415 08/1510 <br />Lab Reference # <br />6/6/2008 <br />81512008 <br />8/20/2008 <br />Sample Date 6/7-7-31 8/5-9/20 8/22-9/25 <br />Lab Test Date P. Holder P. Holder P. Holder <br />Sampled B 56 <br />138 54.63 54.63 2 <br />Alkalinity Total CaC03 m /I . <br />272 <br />0 0.371 0.046 0.01 <br />Aluminum, dissolved m /I . <br />827 <br />4 1.:23 1.52 calc <br />Anions me /I . <br />Arsenic, dissolved m /I <br />0001 <br />0 <br />0.00064 <br />0.0035 <br />0.001 <br />Arsenic, total m /I . <br />Bicarbonate m /I 41 138 78 <br />51 <br />0 <br />0.37 <br />0.019 <br />0.01 <br />Boron, dissolved m /I . <br />005 <br />0 0 0 0.001 <br />Cadmium, dissolved m /I . <br />89 <br />89 18.4 21.34 0.1 <br />Calcium, dissolved m /I . <br />Carbonate m /I <br />79 <br />9 <br />2.86 <br />8.98 <br />calc <br />Cation - Anion Balance % . <br />351 <br />5 1.362 1.67 calc <br />Cations me /I <br />m /I 1.6 8 3.8 . <br />1.38 1.26 2.76 0.1 <br />Chloride 0 0 0 0.005 <br />Chromium, total m /I 17 <br />108 153.52 142.8 1 <br />Conductivity umhos/cm . <br />0 <br />037 0.015 0.009 0.002 <br />Copper, dissolved m /I . <br />0 0 0 0.02 <br />Cyanide, total m /l <br />/I 3 <br />39 109 68 <br />7 248.54563 55.16912 61.81024 calc <br />Hardness m . . <br />Hydroxide m /I <br />m /I <br />126 <br />0 <br />0.065 <br />0.2 <br />0.032 <br />0.08 <br />0.01 <br />Iron, dissolved . 0 <br />88 0.052 0.086 0.01 <br />Iron, potentially dissolved m /I . <br />9 <br />0 0.162 0.11 0.01 <br />Iron, total recoverable m /I 09 <br />0 3 <br />8 92 <br />0 . <br />3.02 0.183 0.486 0.01 <br />Iron, total m /I . . . 006 <br />0 0.009 0 0.005 <br />Lead, dissolved m /I . <br />Lead, total m /I <br />85 <br />5 <br />2.24 <br />2.07 <br />0.1 <br />Magnesium, dissolved m /1 <br />m /I 0002 <br />0 0.05 0.01 . <br />0.01 0.009 0.01 0.005 <br />Manganese, dissolved . 049 <br />0 0.017 0.021 0.005 <br />Manganese, total m /I . <br />00009 <br />0 0.000007 0.00003 0.000025 <br />Mercury, total m /I . <br />00325 <br />0 0.0027 0 0.01 <br />Molybdenum, dissolved m /l . <br />0 0.042 0 0.01 <br />Nickel, dissolved m /I 0 0 0 0.13 <br />Nitrate as N, dissolved m /1 0 0 0 0.13 <br />Nitrate/Nitrite as N m /1 01 <br />0 0.01 0 0.01 <br />Nitrite as N), dissolved m /1 7 8 <br />8 1 <br />8 . <br />7.543 8.64 7.5 0.1 <br />H lab SU . . 0 <br />08 0.14 0 0.01 <br />Phosphate <br />dissolved <br />horus Ortho <br />Phos m /I <br />m /I 2.74 0.25 . <br />0.06 0,131 0 0.01 <br />, <br />p <br />Potassium, dissolved m /I 0.47 0.6 0.6 0.1 <br />Selenium, dissolved m /I <br />398 <br />0 <br />0.00061 <br />0.003 <br />0.001 <br />Selenium, total m /I . <br />0 0.009 0.0008 0.00002 <br />Silver, total m /I 233 <br />0 0.319 0.44 Calc <br />Sodium Absorption Ratio SAR calc. . <br />45 <br />8 5.52 7.99 0.1 <br />Sodium, dissolved m /I 25 12 . <br />8.23 2.06 6.59 2 <br />Sulfate m /I 4 54 <br />147 7.61 2.85 talc <br />TDS Ratio calc. . <br />45 <br />257 85.92 96.67 2 <br />TDS Calc. m /I <br />m /I 36 180 101 . <br />104 93 94 2 <br />TDS <br />TSS m /I 6.4 107 36 73 <br />025 <br />0 5 <br />0.009 0 <br />0.017 2 <br />0.005 <br />Zinc, dissolved mg/I . <br /> <br />Baseline and WY 2000 data adapted from WWE (2001). <br />2 Enviro-Chem Analytical, Grand Junction, CO <br />'Zero values denote readings below lab detection levels (MDL). <br />' Enviro-Chem TDS Ratio calculation is [(TDS - TDS (Calc.)) / TDS)] ` 100 <br />C-2 <br />West Elk Mine <br />2008 Annual Hydrology Report <br />HydroGeo, Inc.