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Middle Dry Fork <br />Surface Water Quality and Field Parameters <br /> <br />• <br /> <br />C-9 <br />Mountain Coal West Elk Mine <br />Monitoring Location M. Dry Fork Flume Baseline 2005 Water Year <br />De50ri lion Units Minimum Maximum Mean 5/7/2005 6/5/2D05 10/2/2005 <br />Field Parameters <br />Flow Staff Gau a or ds o.58 0.23 o.3a <br />Electrical Conductivf umhos/Cm 30 480 2'13 282 358 '155 <br />H SU 7.8 8.5 8.2 7.76 7.64 7.74 <br />Tem erature °C °C 3.6 19.8 12 <br />Tem stature °F °F 42.8 59.0 57.7 <br />Comment <br />Laborato Parameters` <br />Name of Certified Lab ACZ <br />Lab Refefence # L51525-05 <br />Sam le Date 5/6/2005 <br />Lab Test Date <br />Sam led B <br />Alkalini otal CaCO3 m A 3a 270 7a2 <br />Aluminum, dissolved m A o.a7 0.07 0.07 <br />Anions me /I tt 1.7 7.7 <br />Arsenic, dissolved m /I <br />Arsenic, total m !I 0.002 0.002 o.ODz <br />Bicarbonate m /I 3a 270 74z <br />Boron, dissolved m /I <br />Cadmium, dissolved m /I <br />Calcium, dissolved m /I 6.6 56.8 31.96 <br />Carbonate m A <br />Cation -Anion Balance % -22.2 -22.2 -22.2 <br />Cations me /I 0.7 0.7 0.7 <br />Chloride m /I 4 7 <br />Conduclivi umhos/cm 76 76 76 286 <br />Co er, dissolved m /I <br />Hardness m /I 23 208 175 <br />H droxide m /I <br />Iron, dissolved m /I 0.77 0.77 0.77 o.z7 <br />Iron, total m /I o.7s 74.z 3.74 2.82 <br />Lead, dissolved m ll <br />Lead, total m /l <br />Ma nesium, dissolved m /I 1.5 17.6 8.7 <br />Man anese, dissolved m /I o.029 0.02& D.D2s <br />Man anese, total m A 0.01 0.432 0.77 <br />Mercu ,total m A <br />Mol bdenum, dissolved m /I <br />Nitrate as N ,dissolved m /I 0.57 0.10 <br />Nitrate/Nitrite as N m /l 0.57 0.72 <br />Nitrite as N ,dissolved m /I o.7 0.02 <br />H lab SU 6.7 8,7 6.7 8.3 <br />Ph05 hale m /I 0.33 0.33 0.33 <br />Phos horns Ortho , dissolved m /I o.76s o.oa7 <br />Potassium, dissolved m /I 0.5 o.s D.s <br />Selenium, dissolved m /I <br />Selenium, total m /I <br />Sodium Absor lion Ratio SAR talc. D.a7 t.t9 0.76 <br />Sodium, dissolved m /I 5.s 3e.e ts.9 <br />Sulfate m /I so zs <br />TDS Ratio talc. <br />TDS Calc. m /I <br />TDS m /l 50 300 772 200 <br />TSS m !I 278 72 42 <br />Zinc, dissolved mg/I <br />"Baseline,WY 2000, and WY 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 Measured <br /> <br />West Elk Mine <br />2005 Annual Hydrology Report HydroGeo, Inc. <br />