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Well SOM-C-76 <br />Water Quality and Field Parameters <br /> <br />I <br />Mountain Coal West Elk Mine <br />MonNorin Location Well SOM-C-76 Baseline 2001 Water Year <br />Descri tion Unhs Minimum Maximum Mean 5/2/2001. 6/23/2001 9/28/2001 <br />Field Parameters <br />Water Level De th feet 275.8 215.98 216.51 <br />Electrical Condudivi umhos/cm 1910 2500 2970 2700 2600 2600 <br />H SU 5.2 8.2 9,3 8.1 8.1 8.1 <br />Tem erature ~ oC 8.2 11.7 14.2 11.4 11.5 11.6 <br />Comment <br />Laborato Parameters <br />Name of Certdied Lab - ACZ <br />Lab Reference # L34147-09 <br />Sam le Date 9/28/2001 <br />Lab Test Date 1oN5-10/25 <br />$am led B R.H. <br />Alkalini otal CaC03 m 1294 1503 1860 1520 <br />Aluminum, dissolved m <br />Ammonia m I 0 0.64 1.36 0.01 <br />Anions me 29.6 30.88 32.71 30.5 <br />Arsenic, dissolved m 0 0 0.001 -0.003 <br />Arsenic, total m <br />Bicarbonate m 41 1181 1894 1520 <br />Boron, dissolved m 0.61 <br />Cadmium, dissolved m l 0 0 0 -0.0005 <br />Calcium, dissolved m 1.6 2 2.3 2.4 <br />Carbonate m 0 30 186 -2 <br />Cation -Anion Balance % -3.3 -0.45 3 -2.2 <br />Cations me 29.3 30.53 31.5 29.2 <br />Chloride m l 0 4 17 3 <br />CondUCtivi umh05/cm 2300 2487 2650 2540 <br />Co er, dissolved m <br />Hardness m I 6 15 43 10 <br />H roxide I 0 0 0 -2 <br />Iron, dissolved m 0 0.13 1 0.59 <br />Iron, total m I 0 5.07 18 1.34 <br />Leatl, dissolved m 0 0 0 0.0032 <br />Ma nesium, dissolved m 0.6 0.8 1.5 0.9 <br />Man anese, dissolved m /I 0 0.005 0.016 0.008 <br />Man anese, total m o 0.017 0.145 o.oos <br />Mercu ,dissolved m o 0 0 -0.0002 <br />Mol denum, dissolved m I <br />NitrateMitrite as N m I 0 0.16 2.16 -0.04 <br />Nitro en, ammonia m I 0.57 0.65 0.73 0.75 <br />H SU 7.9 8.4 9.3 8.2 <br />Phos hate m 1 0.06 0.06 0.06 0.03 <br />Phos horns Ortho ,dissolved m 0 0.068 1.26 0.071 <br />Potassium, dissolvetl m 3.6 3.9 4.2 3.8 <br />Selenium, dissolved m 0 0 0 -0.001 <br />Selenium, total m I <br />Sodium Abso lion Ratio SAR talc. 46.1 102.7 728.6 92.4 <br />Sodium, dissolved m I 658 700 756 654 <br />Sulfate m 0 9 160 -10 <br />TDS Ratio talc. 7 <br />TDS Calc. <br />TDS <br />TSS m I <br />m I <br />m <br />1530 <br />7 <br />1642 <br />37 <br />2590 <br />226 1580 <br />1580 <br />Zinc, dissolved m o 0 0.01 -0.01 <br /> <br />AAL. Inc -American Assa Laboratories, Inc., $ arks, Nevada <br />Standard is for reference u ores onl <br />NA - not a Iicable NM -not measured NR -not re orted <br /> <br />West Elk Mine <br />G-11 2001 Annual Hydrology Report HydroGeo, Ine. <br />