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Lower Sylvester Gulch <br />Surface Water puality and Field Parameters <br /> <br />• <br /> <br />C-5 <br />Mountain Coal West Elk Mine <br />Monitoring Location L. Sylvester Guleh Baseline 2005 Water Year <br />DeSCri lion Units Minimum Maximum Mean 5/2/2005 6!7/2005 9/20/2005 <br />Fieltl Parameters <br />Flow m 0.07 0.07 0.07 Too real Too rear Too real <br />Electfical Co0duclivi UmhOSICm 620 700 653 3460 4510 3760 <br />H SU B.5 9.7 8.9 8.69 9.0 8.89 <br />Tem erature °C) °C zs 10.2 9 <br />Tem erature (°F °F 56.5 64.0 55 <br />Comment <br />Laborato Parameters` <br />Name of Certified Lab ACZ <br />Lab Reference # L51623-02 <br />Sam le Date 6/7/2005 <br />Lab Test Date 8/13-7/1 <br />Sam led B <br />Alkaline Total CaCO3 m /1 323 323 323 <br />Aluminum, dissolved m fl 0.03 0.03 0.03 <br />Anions me /I <br />Arsenic, dissolved m /I <br />Arsenic, total m /I 0.001 0.001 0.001 <br />8i0arbOnale m /1 315 315 315 <br />Boron, dissolvetl m /I <br />Cadmium, dissolved m /I 0.003 0.003 0.003 <br />Calcium, dissolved m /I a1 41 41 <br />Carbonate m ll a e a <br />Calton -Anion BaanCa % -3.2 -3.2 -3.2 <br />CatloOS me fl 7.5 7.5 7.5 <br />Chloritle m /I a 4 a <br />Conductive umhos/cm 597 ss7 5s7 0000 <br />Co er, dissolved m /I O.o1 0.01 0.01 <br />Hardness m /I 179 179 179 <br />H dioxide m /I 2 2 2 <br />Iron, dissolved m /I 0.05 0.05 0.05 0.14 <br />Iron, total m /I 0.17 0.17 0.17 10.10 <br />Lead, dissolved m /I o.6a d.oa o.oa <br />Lead, total m /l <br />Ma nesium, dissolved m /I 18.7 18.7 18.7 <br />Man anese, dissolved m /I 0.007 0.007 0.007 <br />Man aneae, total m fl 0.005 0.005 0.005 <br />Mercu ,total m /I 0.0002 0.0002 0.0002 <br />Mol bdenum, dissolved m /l 0.01 0.01 0.01 <br />Nitrate as N ,dissolved m R <br />Nitrate/Nitrite as N m /l 0.05 o.ds o.os <br />Nitdte as N , dissolved m /I <br />H lab SU 8.3 8.3 8.3 9,0 <br />Phos hate m A 0.08 0.09 0.09 <br />Phos horns Ortho ,dissolved m /t 0.031 0.031 0.031 <br />Potassium, dissolved m A 2.2 2.2 2.2 <br />Selenium, dissolvetl m A <br />Selenium, total m /1 0.04 0.04 0.04 <br />Sodium Ahso lion Ratio SAR talc. 2.89 2.89 2.99 <br />Sodium, dissolved m h 87.8 87.9 87.8 <br />Sulfate m fl 70 70 70 <br />TDS Ratio talc. <br />TDS CaIC. m /I <br />TDS m A 400 430 010 2610 <br />TSS m /I 5 120 74 266 <br />Zinc, dlssolved mgA 0.01 0.01 0.01 <br />'Baseline, WY 2000, and Wl' 2001 data ada led from WWE. <br />ACZ -ACZ Laboratories, Inc., Steamboat S rin s, CO <br />Ne alive values denote readin s below lab detection levels <br />NM -Not Measuretl <br /> <br />West Elk Mine <br />2005 Annual Hydrology Report HydroGeo, Inc. <br />