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TABLE: 20 <br />TWENTYMILE COAL, LLC <br />2016 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />Site: 01S5 (001-S-5, Alluvial Well) <br />Far- 01 1 <br />DATUM = 6804.95 <br />CATEGORY <br />PARAMETER <br />ANAL T.30.1a <br />Units <br />OCT NOV DEC JAN FEB MAR APR <br />MAY JUN JUL AUG <br />SEP <br />Date <br />3/10/2016 <br />5/3/2016 <br />9/25/2016 <br />Water Level <br />Field <br />FT <br />3.19 <br />0.41 <br />2.91 <br />Water Elevation <br />Field <br />FT <br />6801.76 -- <br />6804 <br />6802.04 <br />PHYSICAL <br />Alkalinity as CaCO3 @ pH 4.5 <br />N <br />MG/L <br />377 <br />391 <br />Hydroxide as OH N MG/L <20 <br /><20 <br />H Temperature N DEG -C 22.60 <br />23.10 <br />H lab/field S.U. 7.8 8.10 <br />8 <br />Specific Conductivity lab field UMS CM 2100 1470 <br />2170 <br />Tem erture Field DEG -C 9.6 8.4 <br />9.8 <br />Total Dissolved Solids Lab N MG/L 1120 <br />2020 <br />ANION <br />Alkalinity,Bicarbonate as CaCO3 <br />N <br />MG/L <br />460 <br />478 <br />Carbonate as CO3 N MG/L <20 <br /><20 <br />Sulfates N MG/L 470 <br />970 <br />CATION <br />Calcium <br />D <br />MG/L <br />129 <br />235 <br />Magnesium D MG/L 51.40 <br />96.40 <br />Sodium D MG/L 142 <br />192 <br />NUTRIENT <br />Ammonia Nitrogen <br />N <br />MG/L <br />0.63 <br />0.95 <br />NO3-NO2 Nitrogen N MG/L <0.10 <br /><0.10 <br />Phosphorus, Ortho hos horus N MG/L 0.02 <br /><0.05 <br />PRIMARY <br />Cadmium <br />D <br />UG/L <br /><0.50 <br /><1 <br />Lead D UG/L <200 <br /><300 <br />Mercury D UG/L <1 <br /><1 <br />Selenium D UG/L <0.30 <br /><0.50 <br />SECONDARY <br />Iron <br />D <br />UG/L <br />1060 <br />1650 <br />Man anese D UG/L 54 <br />90 <br />TRACE- <br />Molybdenum <br />D <br />UG/L <br />- <br />20—T---- <br /><200 <br />2016 AHR FC ANNUAL SAMPLE E <br />