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TABLE : 23A <br />TWENTYMILE COAL, LLC <br />2016 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />PERIOD OF RECORD <br />Site: 06AY1 (006 -AY -1, Alluvial Well) DATUM 1 6827.99 <br />Location Code <br />I <br />06AY1 <br />Chemical Name <br />Units <br />Sample Count <br />Mean <br />Median Maximum Minimum <br />Alkalinity as CaCO3 @ pH 4.5 <br />MG/L <br />73 <br />272 <br />260 <br />430 <br />134 <br />Alkalinity,Bicarbonate as CaCO3 <br />MG/L <br />2 <br />394 <br />394 <br />414 <br />374 <br />Ammonia Nitrogen <br />MG/L <br />81 <br />0.1488 <br />0.05 <br />5 <br />0.001 <br />Cadmium Dissolved <br />UG/L <br />89 <br />1.3 1 <br />0.5 <br />5 <br />0.1 <br />Cadmium Tot. Rec. <br />UG/L <br />1 <br />0.2 <br />0.2 <br />0.2 <br />0.2 <br />Calcium Dissolved <br />MG/L <br />89 <br />103.7 <br />83 <br />520 <br />5.1 <br />Carbonate as CO3 <br />MG/L <br />57 <br />7.861 <br />2 <br />20 <br />0 <br />Chloride <br />MG/L <br />3 <br />11 <br />10 <br />18 <br />6 <br />Hydroxide as OH <br />MG/L <br />39 <br />10 <br />20 <br />20 <br />2 <br />Iron Dissolved <br />UG/L <br />90 <br />484 1 <br />75 <br />17000 <br />5 <br />Iron Tot. Rec <br />UG/L <br />1 <br />4050 <br />4050 <br />4050 <br />4050 <br />Lead Dissolved <br />UG/L <br />80 <br />70 <br />40 <br />200 <br />20 <br />Magnesium Dissolved <br />MG/L <br />89 <br />52.87 <br />42 <br />252 <br />2.3 <br />Manganese Dissolved <br />UG/L <br />88 <br />1200 <br />535 <br />10200 <br />5 <br />Manganese Tot. Rec. <br />UG/L <br />1 <br />390 <br />390 <br />390 <br />390 <br />Mercury Dissolved <br />UG/L <br />89 <br />0.42 <br />0.2 <br />5 <br />0.1 <br />Molybdenum Dissolved <br />UG/L <br />80 <br />44 <br />1 50 <br />250 <br />10 <br />Molybdenum Tot. Rec. <br />UG/L <br />1 <br />50 <br />50 <br />50 <br />50 <br />NO3-NO2 Nitrogen <br />MG/L <br />88 <br />0.147 <br />0.03 <br />3.39 <br />0.02 <br />H Temperature <br />DEG -C <br />20 <br />21.8 <br />22 <br />25 <br />18.9 <br />H Lab <br />S.U. <br />44 <br />7.74 <br />7.8 <br />8.4 <br />6.88 <br />Phosphorus, Ortho hos horus <br />MG/L <br />86 <br />0.04794 <br />0.02 <br />0.87 <br />0.005 <br />Selenium Dissolved <br />UG/L <br />89 <br />2.673 <br />1 1 <br />48.8 <br />0.2 <br />Selenium Tot. Rec. <br />UG/L <br />1 <br />3 <br />3 <br />3 <br />3 <br />Silver Tot. Rec. <br />UG/L <br />1 <br />0.5 <br />0.5 <br />0.5 <br />0.5 <br />Sodium Dissolved <br />MG/L <br />89 <br />63.75 <br />29.5 <br />609 <br />1.4 <br />Sodium Adsorption Ratio <br />RATIO <br />52 <br />1.2494 <br />0.715 <br />5.483 <br />0.43 <br />Solids Total Suspended <br />MG/L <br />1 <br />2142 <br />2142 <br />2142 <br />1 2142 <br />Specific Conductivity,Lob <br />UMS/CM <br />81 <br />842.9 <br />771 <br />2390 <br />1 443 <br />Sulfates ! <br />MG/L <br />93 <br />316.4 <br />175 <br />2930 <br />40 <br />Total Dissolved Solids, Lab <br />MG/L <br />90 <br />721.5 <br />520 <br />4592 <br />253 <br />Zinc Tot. Rec. <br />UG/L <br />1 <br />40 <br />40 <br />40 <br />40 <br />2016 AHR FC POR <br />