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Lower Dry Fork Flume <br />Surface Water Quality and Field Parameters <br />• <br />L_J <br />• <br />Mountain Coal West Elk Mine <br />Monitoring Location: Lower Dry Fork 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 />0.45 <br />0.10 <br />0.09 <br />Flow <br />Electrical Conductivity umhos/cm 399 1135 1014 <br />H SU 8.45 8.14 8.22 <br />Temperature (C C 12.8 9.2 18.2 <br />Tem erature F F 55.0 48.6 64.8 <br /> <br />Comment <br />Laboratory Parameters 3 <br />Name of Certified Lab z ACZ <br />Lab Reference # L62931-05 <br /> 5/30/2007 <br />Sample Date 6/4-6/11 <br />Lab Test Date <br />Sampled B <br />Alkalinity Total CaC03 m /I <br />Aluminum, dissolved m /l <br />Anions me /I <br />Arsenic, dissolved m /I <br />Arsenic, total m /I <br />Bicarbonate m /I 118 324 220 <br />Boron, dissolved m /I <br />Cadmium, dissolved m /I <br />Calcium, dissolved m /l 87.9 87.9 87.9 <br />Carbonate m /I <br />Cation - Anion Balance <br />Cations me /I <br />Chloride m /I 8.4 4.2 <br />Conductivit umhos/cm 207 1920 755 1080 <br />Copper, dissolved m /I <br />Hardness m /I 125 726 360 <br />Hydroxide m /I <br />m /I <br />0.178 <br />0.049 <br />0.03 <br />B <br />Iron, dissolved m /I 02 <br />0 84 5.6 0.21 <br />Iron, total . <br />Lead, dissolved m /I <br />Lead, total m /I <br />Magnesium, dissolved m /I 9.8 49 29 <br />Manganese, dissolved m /I 0.008 0.013 0.011 <br />Manganese, total m /I 46.4 1.4 <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />Nitrate as N), dissolved m /I <br />Nitrate/Nitrite as N m /I 0.1 0.3 0.2 <br />Nitrite as N), dissolved m /l <br />5 <br />8 <br />H <br />H lab SU 6.9 9 8.2 . <br />Phosphate m /I <br />Phosphorus Ortho , dissolved m /I 0.763 0.048 <br />Potassium, dissolved m /I <br />Selenium, dissolved m /I <br />Selenium, total m /I <br />Sodium Absorption Ratio SAR calc. 0.71 1.48 1.11 <br />Sodium, dissolved m /I 69 69 69 <br />lf <br />t <br />S m /I 35 613 249 <br />e <br />u <br />a <br />TDS Ratio calc. <br />l <br />TDS C M q/1 <br />a <br />c. m /I 158 1388 E!81 740 <br />TDS <br />TSS m /I 1.2 1098 44 -5 U <br />. <br />Zinc, dissolved mg/I <br />Baseline and WY 2000 data adapted from WINE (2001). <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 <br />C-8 <br />West Elk Mine <br />2007 Annual Hydrology Report <br />HydroGeo, Inc.