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CATEGORY <br />PARAMETER <br />ANALYSIS TYPE <br />UNITS <br />JAN <br />FEB <br />MAR <br />APR <br />MAY <br />JUN <br />JUL <br />AUG <br />SEP <br />OCT <br />NOV <br />DEC <br />Date <br />2/16/2011 <br />5/5/2011 <br />8/26/2011 <br />12/6/2011 <br />Water Elevation <br />FT <br />6297.72 <br />6323.07 <br />6321.83 <br />6321.17 <br />Water Level <br />FT <br />85.57 <br />60.22 <br />61.46 <br />61.57 <br />PHYSICAL <br />CONDUCTIVITY <br />LAB <br />UMS /CM <br />720 <br />992 <br />930 <br />1010 <br />PH <br />LAB <br />S.U. <br />7.58 <br />7.9 <br />7.42 <br />7.44 <br />CATIONS <br />CALCIUM <br />DISSOLVED <br />MG /L <br />105 <br />MAGNESIUM <br />DISSOLVED <br />MG /L <br />47.4 <br />SODIUM <br />DISSOLVED <br />MG /L <br />25.6 <br />ANIONS <br />BICARBONATE <br />AS HCO3 <br />MG /L <br />417 <br />CARBONATE <br />AS CO3 <br />MG /L <br />< 20 <br />CHLORIDE <br />NOT APPLICABLE <br />MG /L <br />32 <br />SULFATE <br />NOT APPLICABLE <br />MG /L <br />158 <br />PRIMARY <br />CADMIUM <br />DISSOLVED <br />UG /L <br />0.6 <br />LEAD <br />DISSOLVED <br />UG /L <br />0.2 <br />MERCURY <br />DISSOLVED <br />UG /L <br />< 1 <br />SELENIUM <br />DISSOLVED <br />UG /L <br />< 0.3 <br />SECONDARY <br />IRON <br />DISSOLVED <br />UG /L <br />310 <br />MANGANESE <br />DISSOLVED <br />UG /L <br />386 <br />TRACE METALS <br />MOLYBDENUM <br />TOTAL RECOV <br />UG /L <br />< 50 <br />NUTRIENTS <br />NITROGEN <br />NO3 -NO2 <br />MG /L <br />0.09 <br />S <br />TABLE: 15 <br />TWENTYMILE COAL COMPANY <br />2011 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />Site: 9MN (No. 9 Mine Well, No. 9 Mine Well, Twentymile Sandstone) DATUM = 6383.29 <br />Note : <br />