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Upper Minnesota Creek Flume (USFS) <br />Surface Water Quality and Field Parameters <br /> <br />r <br />?J <br />,r11 <br />u <br />Mountain Coal West Elk Mine <br />Monitoring Location U. Minnesota Ck USFS) Flume Baseline 2007 Water Year <br /> <br />Description Units Minimum Maximum Mean 4/27/2007 5/30/2007 Q 4 8/24/2007 <br />Field Parameters <br />Staff Gauge or cfs <br />1.53 <br />Floodin <br />0.36 <br />Flow <br />Electrical Conductivity umhos/cm 295 194 140 <br />H SU 8.46 7.77 8.10 <br />Temperature °C °C 13.3 5.4 16.0 <br />Temperature °F OF 55.9 41.7 60.8 <br />Comment <br />Laboratory Parameters <br /> <br />Name of Certified Lab z ACz <br /> <br /> L62931-04 <br />Lab Reference # 5/30/2007 <br />Sample Date s/4-6111 <br />Lab Test Date <br />Sampled B <br />Alkalinity Total CaC03 m /I <br />Aluminum dissolved m /l <br />Anions me /1 <br />Arsenic dissolved m /I <br />Arsenic, total m /I <br />Bicarbonate m /I <br />Boron dissolved m /I <br />Cadmium, dissolved m /l <br />Calcium dissolved m /I <br />Carbonate m /I <br />Cation - Anion Balance % <br />Cations me /I <br />Chloride m /I <br />173 <br />Conductivity umhos/cm <br />Copper, dissolved m /I <br />Hardness m /l <br />Hydroxide m /l <br />03 <br />0 <br />B <br />Iron dissolved m /l . <br />18 <br />2 <br />Iron total m /l . <br />Lead dissolved m /I <br />Lead total m /l <br />Magnesium, dissolved m /I <br />Manganese, dissolved m /I <br />Manganese, total m /I <br />Mercury, total m /I <br />Molybdenum, dissolved m /l <br />Nitrate as N), dissolved m /I <br />Nitrate/Nitrite as N m /I <br />Nitrite as N dissolved m /I <br />8 <br />1 <br />H <br />H lab SU . <br />Phosphate m /l <br />Phosphorus Ortho dissolved m /I <br />Potassium dissolved m /I <br />Selenium dissolved m /I <br />Selenium total m /I <br />Sodium Absorption Ratio SAR talc. <br />Sodium dissolved m /I <br />Sulfate m /I <br />TDS Ratio talc. <br />TDS Calc. m /l <br />110 <br />TDS m /I <br />gg <br />TSS m /I <br />Zinc, dissolved mg/I <br />Baseline and WY 2000 data adapted from WWE (2001). <br />2 ACZ Laboratory, Steamboat Springs, CO <br />3 Negative values denote readings below lab detection levels <br />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 />C-7 <br />West Elk Mine <br />2007 Annual Hydrology Report <br />HydroGeo, Inc.