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TABLE: 31 <br />TWENTYMILE COAL COMPANY <br />2013 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />Site: AVF15 (AVF -15, Alluvial Well) DATUM = 6628.4 <br />CATEGORY <br />PARAMETER <br />ANALYSIS TYPE <br />UNITS <br />OCT <br />NOV <br />DE <br />JAN <br />FE <br />MAR <br />APR <br />MAY <br />JUN <br />JUL <br />AU <br />SEP <br />Date <br />Water Level <br />Field <br />Ft <br />Water elevation <br />Field <br />Ft <br />PHYSICAL <br />CONDUCTIVIT <br />LAB /Field <br />UMS /CM <br />PH <br />LAB /Field <br />S.U. <br />Well area flooded by 2004 subsidence and has <br />remained permanently ponded. <br />A new well was installed in the summer of 2014. <br />Data will be collected monthly instaed of semi - <br />annually for a yaer. <br />TC will submit a minor revision to eliminate this <br />site, once one year of water quality data is <br />TEMPERATUR <br />Field <br />Degrees C <br />SOLIDS <br />TOT -DISS, LAB <br />MG /L <br />CATIONS <br />CALCIUM <br />DISSOLVED <br />MG /L <br />MAGNESIUM <br />DISSOLVED <br />MG /L <br />SODIUM <br />DISSOLVED <br />MG /L <br />ANIONS <br />BICARBONATE <br />AS HCO3 <br />MG /L <br />CARBONATE <br />AS CO3 <br />MG /L <br />SULFATE <br />NOT <br />MG /L <br />PRIMARY <br />CADMIUM <br />DISSOLVED <br />UG /L <br />LEAD <br />DISSOLVED <br />UG /L <br />MERCURY <br />DISSOLVED <br />UG /L <br />SELENIUM <br />DISSOLVED <br />UG /L <br />SECONDARY <br />IRON <br />DISSOLVED <br />UG /L <br />MANGANESE <br />DISSOLVED <br />UG /L <br />TRACE <br />MOLYBDENUM <br />TOTAL RECOV <br />UG /L <br />NUTRIENTS <br />NITROGEN <br />NO3 -NO2 <br />MG /L <br />AMMIA -FREE <br />MG /L <br />PHOSPHATE <br />ORTHO -DISS <br />MG /L <br />Note : <br />