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Upper Deep Creek <br />Surface Water Quality and Field Parameters <br />• <br />u <br />C7 <br />Mountain Coal West Elk Mine <br />Monitoring Location: Upper Deep Creek Baseline 2007 Water Year <br />Description Units Minimum Maximum Mean 4/28/2007 5/29/2007 Q4 9/11/2007 <br />Field Parameters <br />Flow <br />Flow <br />Electrical Conductivit <br />H Staff Gua a <br />cfs <br />umhos/cm <br />SU <br /> <br />80 <br />8.10 <br /> <br />310 <br />8.80 <br /> <br />192 <br />8.50 N/A <br />11.88 <br />191 <br />8.03 N/A <br />3.12 <br />265 <br />8.12 <br />0.787 <br />201 <br />8.03 <br />Temperature °C °C 0.2 18.6 10.0 7.0 9.0 9.7 <br />Temperature °F OF 32.4 65.5 50.0 44.6 48.2 49.5 <br />Comment <br />Laboratory Parameters <br />Name of Certified Lab z ACZ <br />Lab Reference # L62928-05 <br />Sample Date 5/29/2007 <br />Lab Test Date 6/4-6/9 <br />Sampled B <br />Alkalinity Total CaC03 M q/1 160 103.4 <br />Aluminum, dissolved m /I <br />Anions me /I 1.5 2.6 2.1 <br />Arsenic, Dissolved m /I <br />Arsenic, total m q/1 <br />Bicarbonate m g/1 53 153 106.3 <br />Boron, dissolved M q/1 <br />Cadmium, dissolved m g/1 <br />Calcium, dissolved <br />Carbonate m /I <br />m g/1 14 44.4 <br />9 28.7 <br />1.3 <br />Cation - Anion Balance %u -3.4 -2 -2.7 <br />Cations me /I 1.4 2.5 2.0 <br />Chloride m /I 2 0.2 <br />Conductivity umhos/cm 139 242 191 232 <br />Copper, dissolved <br />Hardness m q/1 <br />m /I <br />47 <br />138 <br />91 <br />Hydroxide m g/1 <br />. <br />Iron, dissolved <br />Iron, total <br />Lead, dissolved <br />Lead, Total <br />Magnesium, dissolved m /I <br />m g/1 <br />m /I <br />m g/1 <br />m /I 0.02 <br />0.14 <br /> <br /> <br />2.6 0.04 <br />9.43 <br /> <br /> <br />6.6 0 <br />2.63 <br /> <br /> <br />4.s 0.06 <br />38.10 <br />Manganese, dissolved m g/1 0.007 0.004 <br />Manganese, total <br />Mercury, total m g/1 <br />m /I 0.005 0.282 0 <br />Molybdenum, dissolved m g/1 <br />Nitrate as N), dissolved m /I <br />Nitrate/Nitrite as N m /I 0.05 0.01 <br />Nitrite as N), dissolved <br />H lab m g/1 <br />SU <br />6.9 <br />8 <br />7.5 <br />8.3 <br />H <br />Phosphate m g/1 0.12 0.2 0.16 <br />Phosphorus Ortho , dissolved m g/1 0.065 0.013 <br />Potassium, dissolved <br />Selenium, dissolved <br />Selenium, total m q/1 <br />m /I <br />m /I 0.7 1.2 1.0 <br />Sodium Absorption Ratio SAR ca1c. 0.32 0.77 0.6 <br />Sodium, dissolved <br />Sulfate m g/1 <br />m /I 7.9 20 <br />30 13.8 <br />10.8 <br />TDS Ratio calc. <br />TDS Calc. m Q/1 <br />TDS <br />TSS m q/1 <br /> <br />m /I 60 210 133 170 <br /> <br />724 <br />Zinc, dissolved mg/l <br />Baseline and WY 2000 data adapted from WWE (2001). Shaded cells indicate value different from AHR <br />2000 baseline value due to rounding. <br />2 ACZ Laboratory, Steamboat Springs, CO <br />3 Negative values denote readings below lab detection levels <br />4 ACZ Lab Qualifiers: U - Analyte was analyzed for but not detected at the indicated MDL <br />H - Holding time exceeded; pH is a field test with an immediate hold time. <br />B - Analyte conc detected at a value bet method detection limit (MDL) and practical quantitation limit (PQL). <br />West Elk Mine <br />C-15 2007 Annual Hydrology Report HydroGeo, Inc.