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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 />2/15/2011 <br />5/5/2011 <br />8/26/2011 <br />12/7/2011 <br />Water Elevation <br />FT <br />6125.71 <br />6128 <br />6126.23 <br />6126.56 <br />Water Level <br />FT <br />6.88 <br />4.59 <br />6.36 <br />6.03 <br />PHYSICAL <br />CONDUCTIVITY <br />LAB <br />UMS /CM <br />1540 <br />1880 <br />1580 <br />1640 <br />PH <br />LAB <br />S.U. <br />8.4 <br />8.2 <br />8.3 <br />8.1 <br />CATIONS <br />CALCIUM <br />DISSOLVED <br />MG /L <br />38.2 <br />52.1 <br />31.2 <br />451 <br />MAGNESIUM <br />DISSOLVED <br />MG /L <br />17.8 <br />28.3 <br />14.0 <br />20.9 <br />SODIUM <br />DISSOLVED <br />MG /L <br />335 <br />351 <br />340 <br />343 <br />ANIONS <br />BICARBONATE <br />AS HCO3 <br />MG /L <br />963 <br />954 <br />992 <br />1070 <br />CARBONATE <br />AS CO3 <br />MG /L <br />30 <br />31 <br />17 <br />34 <br />CHLORIDE <br />NOT APPLICABLE <br />MG /L <br />26 <br />35 <br />24 <br />27 <br />SULFATE <br />NOT APPLICABLE <br />MG /L <br />< 5 <br />154 <br />< 5 <br />< 5 <br />PRIMARY <br />CADMIUM <br />DISSOLVED <br />UG /L <br />< 0.5 <br />< 0.5 <br />< 0.5 <br />< 0.5 <br />LEAD <br />DISSOLVED <br />UG /L <br />< 0 5 <br />0.2 <br />0.1 <br />< 0.5 <br />MERCURY <br />DISSOLVED <br />UG /L <br />< 1 <br />< 1 <br />< 1 <br />< 1 <br />SELENIUM <br />DISSOLVED <br />UG /L <br />2.2 <br />5.4 <br />0.2 <br />1.4 <br />SECONDARY <br />IRON <br />DISSOLVED <br />UG /L <br />< 50 <br />< 50 <br />20 <br />< 50 <br />MANGANESE <br />DISSOLVED <br />UG /L <br />28 <br />265 <br />489 <br />118 <br />TRACE METALS <br />MOLYBDENUM <br />TOTAL RECOV <br />UG /L <br />< 50 <br />< 50 <br />< 50 <br />< 50 <br />NUTRIENTS <br />NITROGEN <br />NO3 -NO2 <br />MG /L <br />0.60 <br />2.44 <br />< 0.1 <br />0.17 <br />TABLE : 23 <br />TWENTYMILE COAL COMPANY <br />2011 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />Site: AV5 (Well AVF -5, Well AVF -5, Williams Fork Alluvium) DATUM = 6132.59 <br />Note : <br />