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TABLE: 9A <br />TWENTYMILE COAL, LLC <br />2015 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />Site: 97013TM (97013 TM, Bedrock Well) DATUM = 6672.27 <br />LOCATION NAME <br />97013TM <br />CHEMICAL NAME <br />Units <br />Average <br />Maximum <br />Minimum <br />Standard <br />Deviation <br />ALKALINITY as CaCO3 <br />MGL <br />378.64 <br />487 <br />233 <br />90.07 <br />BICARBONATE <br />MGL <br />321 <br />460 <br />2 <br />114 <br />CADMIUM DISSOLVED <br />UG/L <br />2 <br />5 <br />0.4 <br />2 <br />CALCIUM DISSOLVED <br />MGL <br />1.67 <br />6.3 <br />0.24 <br />1.33 <br />CARBONATE <br />MGL <br />86.63 <br />162 <br />2 <br />32.76 <br />CONDUCTIVITY SPC FIELD <br />UMHOS CM <br />1270 <br />1650 <br />1120 <br />148 <br />CONDUCTIVITY SPC LAB <br />UMS CM <br />1197 <br />1610 <br />933 <br />152.5 <br />HARDNESS CALCIUM <br />MGL <br />11.33 <br />16 <br />6 <br />5.033 <br />HYDROXIDE as OH <br />MGL <br />12.45 <br />20 <br />6 <br />5.032 <br />IRON DISSOLVED <br />UG/L <br />140 <br />720 <br />30 <br />140 <br />LEAD DISSOLVED <br />UG/L <br />100 <br />200 <br />40 <br />80 <br />MAGNESIUM DISSOLVED <br />MGL <br />0.449 <br />1.2 <br />0.01 <br />0.314 <br />MANGANESE DISSOLVED <br />UG/L <br />10 <br />30 <br />5 <br />10 <br />MERCURY DISSOLVED <br />UG/L <br />0.5 <br />1 <br />0.2 <br />0.4 <br />MOLYBDENUM DISSOLVED <br />UG/L <br />50 <br />100 <br />10 <br />20 <br />NITRATE NITROGEN <br />MGL <br />0.02 <br />0.07 <br />0.02 <br />0.01 <br />NITRITE NITROGEN <br />MGL <br />0.023 <br />0.1 <br />0.01 <br />0.022 <br />NITROGEN NO3-NO2 <br />MGL <br />0.045 <br />0.1 <br />0.02 <br />0.035 <br />PH TEMPERATURE <br />DEG -C <br />22.667 <br />27 <br />21 <br />2.251 <br />PH FIELD <br />S.U. <br />9.683 <br />10.89 <br />8.79 <br />0.5502 <br />PH LAB <br />S.U. <br />9.588 <br />10.8 <br />9.27 <br />0.3587 <br />PHOSPHORUS <br />MG/L <br />0.06 <br />0.06 <br />0.06 <br />0 <br />PHOSPHATE ORTHO <br />MGL <br />0.09109 <br />0.294 <br />0.02 <br />0.07367 <br />SAR <br />RATIO <br />40.9 <br />49.4 <br />36.8 <br />4.938 <br />SELENIUM DISSOLVED <br />UG/L <br />2.73 <br />17 <br />0.2 <br />4.29 <br />SODIUM DISSOLVED <br />MGL <br />254 <br />334 <br />71 <br />52.8 <br />SOLIDS (TDS) <br />MGL <br />701 <br />960 <br />540 <br />94.5 <br />SULFATE <br />MGL <br />176 <br />490 <br />60 <br />99.7 <br />TEMPERATURE FIELD <br />DEG -C <br />1 10.45 <br />14.2 <br />6.1 <br />1.88 <br />