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Table: TA <br />Williams Fork Mine <br />2017 Annual Hydrology Report <br />Period of Record <br />Site: T7A, Well TR -7A, Middle Sandstone Datum: 6244.3 <br />Type <br />Parameter <br />Fraction <br />Units <br />Date Range <br />Sample Count Average <br />Median <br />Maximum <br />Minimum <br />STDEV <br />FIELD <br />pH, Field <br />N <br />S.U. <br />1/26/1982 <br />11/19/2017 <br />91 <br />8.68 <br />8.74 <br />10.1 <br />7.1 <br />0.501 <br />FIELD <br />Specific Conductivity, Field <br />N <br />UMHOS/CM <br />1/26/1982 <br />11/19/2017 <br />91 <br />396 <br />380 <br />850 <br />122 <br />84.9 <br />FIELD <br />Temperature, Field <br />N <br />DEG -C <br />5/27/1982 <br />11/19/2017 <br />86 <br />11.8 <br />12 <br />21 <br />5.4 <br />2.56 <br />PHYSICAL <br />Alkalinity as CaCO3, @ pH 4.5 <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />30 <br />182 <br />187 <br />231 <br />127 <br />29.9 <br />PHYSICAL <br />Hardness <br />N <br />MG/L <br />5/5/2011 <br />4/11/2017 <br />5 <br />132 <br />133 <br />146 <br />120 <br />10.7 <br />PHYSICAL <br />Hydroxide as OH <br />N <br />MG/L <br />6/11/1992 <br />4/11/2017 <br />9 <br />10 <br />20 <br />20 <br />0 <br />10 <br />PHYSICAL <br />pH,Lab <br />N <br />S.U. <br />3/30/1981 <br />4/11/2017 <br />33 <br />8.712 <br />8.8 <br />10.14 <br />6.5 <br />0.5931 <br />PHYSICAL <br />Specific Conductivity, Lab <br />N <br />UMHOS/CM <br />3/30/1981 <br />4/11/2017 <br />33 <br />380 <br />370 <br />600 <br />265 <br />62.7 <br />ANION <br />Alkalinity, Bicarbonate as CaCO3 <br />N <br />MG/L <br />5/20/2009 <br />4/11/2017 <br />4 <br />220 <br />214 <br />250 <br />202 <br />21.8 <br />ANION <br />Chloride <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />33 <br />3.5 <br />21 <br />8 <br />1 <br />2.1 <br />ANION <br />Sulfates <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />33 <br />23 <br />12 <br />85 <br />1 <br />22 <br />CATION <br />Calcium <br />D <br />MG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />7.4 <br />5 <br />28 <br />2 <br />6.1 <br />CATION <br />Magnesium <br />D <br />MG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />25.8 <br />27.4 <br />32 <br />14 <br />5.8 <br />CATION <br />Sodium <br />D <br />MG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />37.1 <br />33.5 <br />63 <br />19.6 <br />10.9 <br />NUTRIENT <br />Nitrate Nitrogen <br />N <br />MG/L <br />3/5/1985 <br />4/11/2017 <br />22 <br />0.03 <br />0.02 <br />0.05 <br />0.02 <br />0.01 <br />NUTRIENT <br />NO3-NO2 Nitrogen <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />32 <br />0.067 <br />0.045 <br />0.35 <br />0.02 <br />0.068 <br />PRIMARY <br />Arsenic <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />3 <br />1 <br />40 <br />1 <br />8 <br />PRIMARY <br />Cadmium <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />4 <br />5 <br />10 <br />0.1 <br />2 <br />PRIMARY <br />Lead <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />29 <br />20 <br />290 <br />0.7 <br />56 <br />PRIMARY <br />Mercury <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />0.4 <br />0.21 <br />1 <br />0.1 <br />0.4 <br />PRIMARY <br />Selenium <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />1 <br />1 <br />2 <br />0.3 <br />0.5 <br />SECONDARY <br />Iron <br />D <br />UG/L <br />3/5/1985 <br />4/11/2017 <br />24 <br />290 <br />35 <br />3780 <br />10 <br />762 <br />SECONDARY <br />Manganese <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />24 <br />20 <br />50 <br />10 <br />11 <br />SECONDARY <br />Zinc <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />17 <br />10 <br />50 <br />5 <br />15 <br />TRACE <br />Boron <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />25 <br />40 <br />40 <br />100 <br />10 <br />20 <br />TRACE <br />IMolybdenurn <br />D <br />UG/L <br />6/29/1983 <br />4/11/20171 <br />251 <br />601 <br />501 <br />2001 <br />10 <br />50 <br />3/5/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\EMPIRE\AHR 2017 ALL FINALT7A <br />