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Table: 8A <br />Williams Fork Mine <br />2017 Annual Hydrology Report <br />Period of Record <br />Site: 01, Well 81-01, Middle Sandstone Datum: 6413.0 <br />Type <br />Parameter <br />Fraction <br />Units <br />Date Range <br />Sample Count Average <br />Median <br />Maximum <br />Minimum <br />STDEV <br />PHYSICAL <br />Alkalinity as CaCO3, @ pH 4.5 <br />N <br />MG/L <br />5/20/2009 4/11/2017 <br />6 <br />350 <br />363 <br />390 <br />283 <br />40.4 <br />PHYSICAL <br />Hardness <br />N <br />MG/L <br />5/5/2011 4/11/2017 <br />5 <br />652 <br />638 <br />736 <br />588 <br />59.2 <br />PHYSICAL <br />H droxide as OH <br />N <br />MG/L <br />5/5/2011 4/11/2017 <br />5 <br />20 <br />20 <br />20 <br />20 <br />0 <br />PHYSICAL <br />1pH, Lab <br />N <br />S.U. <br />5/20/2009 4/11/2017 <br />6 <br />8.06 <br />8.1 <br />8.3 <br />7.75 <br />0.201 <br />PHYSICAL <br />Specific Conductivity, Lab <br />N <br />UMHOS/CM <br />5/20/2009 4/11/2017 <br />6 <br />1190 <br />1210 <br />1370 <br />880 <br />187 <br />ANION <br />Alkalinity, Bicarbonate as CaCO3 <br />N <br />MG/L <br />5/20/2009 4/11/2017 <br />4 <br />419 <br />428 <br />480 <br />339 <br />65.3 <br />ANION <br />Chloride <br />N <br />MG/L <br />5/20/2009 4/11/2017 <br />6 <br />32.6 <br />40 <br />44.3 <br />7 <br />14.9 <br />ANION <br />Sulfates <br />N <br />MG/L <br />5/20/2009 4/11/2017 <br />6 <br />302 <br />331 <br />370 <br />170 <br />80.2 <br />CATION <br />Calcium <br />D <br />MG/L <br />5/20/2009 4/11/2017 <br />6 <br />102 <br />107 <br />120 <br />69 <br />20 <br />CATION <br />Magnesium <br />D <br />MG/L <br />5/20/2009 4/11/2017 <br />6 <br />91.6 <br />102 <br />106 <br />54 <br />20.1 <br />CATION <br />Sodium <br />D <br />MG/L <br />5/20/2009 4/11/2017 <br />6 <br />34.6 <br />34.5 <br />48.7 <br />22 <br />8.77 <br />NUTRIENT <br />Nitrate Nitrogen <br />N <br />MG/L <br />5/20/2009 4/11/2017 <br />4 <br />0.05 <br />0.05 <br />0.05 <br />0.05 <br />0 <br />NUTRIENT <br />NO3-NO2 Nitrogen <br />N <br />MG/L <br />5/5/2011 4/11/2017 <br />10 <br />0.08 <br />0.1 <br />0.1 <br />0.03 <br />0.03 <br />PRIMARY <br />Arsenic <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />6 <br />2 <br />2 <br />2 <br />1 <br />0.5 <br />PRIMARY <br />Cadmium <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />6 <br />0.5 <br />0.5 <br />0.5 <br />0.5 <br />0 <br />PRIMARY <br />Lead <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />6 <br />1 <br />0.5 <br />5 <br />0.1 <br />2 <br />PRIMARY <br />Mercury <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />6 <br />0.9 <br />1 <br />1 <br />0.21 <br />0.3 <br />PRIMARY <br />Selenium <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />6 <br />0.6 <br />0.3 <br />2 <br />0.3 <br />0.7 <br />SECONDARY Iron <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />6 <br />6010 <br />5740 <br />12800 <br />30 <br />4140 <br />SECONDARY Manganese <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />6 <br />259 <br />306 <br />372 <br />98 <br />107 <br />SECONDARY Zinc <br />D <br />UG/L <br />5/20/2009 4/11/2017 <br />61 <br />40 <br />50 <br />50 <br />5 <br />20 <br />TRACE <br />113oron <br />ID <br />UG/L <br />5/20/2009 4/11/2017 <br />61 <br />401 <br />401 <br />801 <br />20 <br />20 <br />TRACE <br />I Molybdenum <br />ID <br />UG/L <br />5/20/200914/11/20171 <br />61 <br />801 <br />801 <br />1001 <br />50 <br />30 <br />3/5/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\EMPIRE\AHR 2017 ALL FINAL81-01 <br />