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Well SOM-45-H-2 <br />Water Quality and Field Parameters <br />• <br />• <br />• <br />Mountain Coal West Elk Mine <br />Monitoring Location Well SOM-45-H-2 Baseline 2003 Water Year <br />Descri lion Units Minimum Maximum Mean 4/14/2003 6/6/2003 9/30/2003 <br />Field Parameters <br />Water Level De th feet 186.63 187.53 189.03 <br />Electrical Conductivi umhoslcm 1073 1626 1285 1270 1286 <br />N SU 6.4 8.6 7.7 8.23 8.01 <br />Tem erature oC 6.5 14.3 10.1 55.7 57.6 <br />Comment <br />Laborato Parameters <br />Name of Certifed Lab ACZ <br />Lab Reference # L43179-07 <br />Sam le Date 9/30/2003 <br />Lab Test Date 10/2-10/29 <br />Sam led B cv <br />Alkalini Total CaCO3 m /I 286 955.000 635.000 630.000 <br />Aluminum, dissolved m /I <br />Ammonia m n 0.03 2.35 0.69 -0.01 <br />Anions me /I 15 15.5 15.3 13.4 <br />Arsenic, dissolved m !I 0 0.002 0.001 -0.0002 <br />Arsenic, total m /I <br />Bicarbonate m /I 0 1156 455 602 <br />Boron, dissolved m I 0.13 <br />Cadmium, dissolved m /I 0 0 0 -0.005 <br />Calcium, dissolved m A a 6.9 5.6 2.2 <br />Carbonate m /I o 218 17 2s <br />Cation -Anion Balance % -5.4 3.8 -0.2 -4.3 <br />Cations me /I 13.9 16.4 15.3 12.3 <br />Chloride m /I 2 10 8 6 <br />COnduclivi umhOS/cm 1310 1390 1350 1210 <br />Co er, dissolved m I <br />Hardness m /I 15 882 215 8 <br />H droxide m /1 0 0 0 -2 <br />Iron, dissolved m /I o 0.86 0.25 0.46 <br />Iron, total m /I 0.35 6.15 1.96 2.63 <br />Lead, dissolved m /I 0 0 0 -0.04 <br />Ma nesium, dissolved m /I t.3 5 2.t o.s <br />Man anese, dissolved m 0.034 0.064 0.048 0.015 <br />Man anese, total m I 0.014 0.39 0.131 0.035 <br />Mercu ,dissolved m /I o 0 0 -0.0002 <br />Mol bdenum, dissolved m /I <br />Nitrate/Nitrite as N m A o o.oa 0.01 0.47 <br />Nitro en, ammonia m /I o.t t.d4 o.st o.3s <br />H SU 7 8.2 7.6 8.4 <br />Phos hate m /I 0.39 0.42 0.41 0.37 <br />Phos horuS Ortho ,dissolved m /I 0 0.535 0.074 0.12 <br />Potassium, dissolved m I 2 2.5 2.3 2.3 <br />Selenium, dissolved m /I 0 0 0 -0.001 <br />Selenium, total m /I <br />Sodium Absor lion Ratio SAR talc. 14.9 37.9 32 a2.6 <br />Sodium, dissolved m /I 308 385 352 273 <br />Sulfate m !! 20 526 161 30 <br />TDS Ratio talc. 1.05 <br />TDS Calc. m /I 704 <br />TDS m /I 740 <br />TSS m /I <br />Zinc, dissolved m /I o 0.02 0.01 0.02 <br /> <br />ACZ -ACZ Labs, Steamboat S rin s, Colorado <br />"Standard is for reference ur oses onl <br />NA - not a livable NM -not measured NR -not re orted <br /> <br />West Elk Mine <br />G-9 2003 Annual Hydrology Report HydroGeo, Inc- <br />