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TABLE: 36A <br />TWENTYMILE COAL COMPANY <br />2016 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONITORING DATA <br />PERIOD OFI RECORD <br />Site: 14 (14, Surface Samples) DATUM = 6915.0 <br />Location Code <br />14 <br />Chemical Name <br />Units <br />Sample Count <br />Mean <br />Median <br />Maximum Minimum <br />Alkalinity as CeCO3 @ PH 4.5 <br />MG/L <br />67 <br />201 <br />183 I <br />358 <br />82 <br />Alkalinity, Bicarbonate as CaCO3 <br />MG/L <br />6 <br />334 <br />328 <br />370 <br />320 <br />Ammonia Nitrogen <br />MG/L <br />62 <br />0.14 <br />0.05 <br />3 <br />0.001 <br />Arsenic Total <br />UG/L <br />44 <br />1 <br />1 <br />5 <br />1 <br />Cadmium(Tot. Rec. <br />UG/L <br />72 <br />0.969 <br />0.5 <br />8 <br />0.1 <br />Calcium Dissolved <br />MG/L <br />182 <br />93.87 <br />90.85 <br />342 <br />30 <br />Carbonate as CO3 <br />MG/L <br />71 <br />9.494 <br />3 <br />37.2 <br />0 <br />Chloride <br />MG/L <br />75 <br />4.7 <br />4 <br />12 <br />1 <br />Copper Pot- Diss <br />UG/L <br />5 <br />2 <br />1 <br />5 <br />1 <br />Hydroxide as OH <br />MG/L <br />35 <br />10 <br />2 <br />20 <br />2 <br />Iron Dissolved <br />UG/L <br />1 <br />50 <br />50 <br />50 <br />50 <br />Iron Tot. Rec. <br />UG/L <br />78 <br />1610 <br />990 <br />7120 <br />140 <br />Iron Total <br />UG/L <br />120 <br />1560 <br />940 <br />13800 <br />30 <br />Magnesium Dissolved <br />MG/L <br />183 <br />47.75 <br />47 <br />175 <br />10 <br />Manganese Dissolved <br />UG/L <br />14 <br />120 <br />20 <br />410 <br />10 <br />Manganese Tot. Rec. <br />UG/L <br />91 <br />130 <br />79 <br />1910 <br />10 <br />Mercury Total <br />UG/L <br />59 <br />0.46 <br />0.2 <br />2 <br />0.1 <br />Molybdenum Tot. Rec. <br />UG/L <br />71 <br />40 <br />50 <br />100 <br />10 <br />NO3-NO2 Nitrogen <br />MG/L <br />178 <br />0.3269 <br />0.08 <br />22.4 <br />0.005 <br />H Temperature <br />DEG -C <br />19 <br />21.25 <br />21.9 <br />23.6 <br />18 <br />H Lab <br />S.U. <br />48 <br />8.03 <br />8.1 <br />8.6 <br />6.9 <br />Phosphorus, Ortho hos horus <br />MG/L <br />115 <br />0.04431 <br />0.029 <br />0.5 <br />0.005 <br />Selenium Tot. Rec. <br />UG/L <br />72 <br />1.44 <br />1 <br />10 <br />0.3 <br />Silver Pot- Diss <br />UG/L <br />4 <br />0.5 <br />0.5 <br />0.5 <br />0.5 <br />Silver Tot. Rec. <br />UG/L <br />72 <br />0.85 <br />0.5 <br />10 <br />0.0001 <br />Sodium Dissolved <br />MG/L <br />178 <br />35.36 <br />34.25 <br />140 <br />10 <br />Sodium Adsorption Ratio <br />RATIO <br />168 <br />0.72458 <br />0.7105 <br />2.25 <br />0.336 <br />Solids Settleable <br />ML/L <br />5 <br />0.1 <br />0.1 <br />0.1 <br />0.1 <br />Solids, Total Suspended <br />M /L <br />205 <br />37.8 <br />24 <br />340 <br />2 <br />Specific Conductivity, Lab <br />U S/CM <br />81 <br />822.9 <br />792 <br />2770 <br />294 <br />Sulfates <br />MG/L <br />180 <br />276 <br />248 <br />1470 <br />33 <br />Total Dissolved Solids, Lab <br />MG/L <br />205 <br />600.5 <br />584 <br />2590 <br />140 <br />Zinc Crot. Rec. <br />UG/L <br />72 <br />22.6 <br />20 <br />80 <br />5 <br />2016 AHR FC POR <br />