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Table: 16A <br />Williams Fork Mine <br />2017 Annual Hydrology Report <br />Period of Record <br />Site: AV5, Well AVF-5 , Williams Fork Alluvium Datum: 6132.59 <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 />134 <br />7.42 <br />7.4 <br />9.7 <br />6.3 <br />0.363 <br />FIELD <br />Specific Conductivity, Field <br />N <br />UMHOS/CM <br />1/26/1982 <br />11/19/2017 <br />134 <br />1721.07 <br />1655 <br />3700 <br />952 <br />462.021 <br />FIELD <br />Temperature, Field <br />N <br />DEG -C <br />5/27/1982 <br />11/19/2017 <br />130 <br />10.3 <br />10.2 <br />18.7 <br />2 <br />3.81 <br />PHYSICAL <br />Alkalinity as CaCO3, @ pH 4.5 <br />N <br />MG/L <br />6/29/1981 <br />11/19/2017 <br />94 <br />797.7 <br />842 <br />1215 <br />243 <br />185.9 <br />PHYSICAL <br />Hardness <br />N <br />MG/L <br />3/16/1992 <br />11/19/2017 <br />16 <br />183 <br />182 <br />260 <br />121 <br />39.6 <br />PHYSICAL <br />Hydroxide as OH <br />N <br />MG/L <br />8/14/1991 <br />11/19/2017 <br />37 <br />9 <br />2 <br />20 <br />0 <br />9 <br />PHYSICAL <br />pH, Lab <br />N <br />S.U. <br />6/29/1981 <br />11/19/2017 <br />100 <br />7.81 <br />7.79 <br />9.72 <br />7 <br />0.405 <br />PHYSICAL <br />Specific Conductivity, Lab <br />N <br />UMHOS/CM <br />6/29/1981 <br />11/19/2017 <br />100 <br />1674 <br />1695 <br />2580 <br />860 <br />272 <br />ANION <br />Alkalinity, Bicarbonate as CaCO3 <br />N <br />MG/L <br />3/16/2009,11/19/2017 <br />14 <br />995 <br />971 <br />1200 <br />816 <br />120 <br />ANION <br />Chloride <br />N <br />MG/L <br />6/29/1981 <br />11/19/2017 <br />100 <br />26.3 <br />26 <br />45 <br />7 <br />7.04 <br />ANION <br />Sulfates <br />N <br />MG/L <br />6/29/1981 <br />11/19/2017 <br />100 <br />182 <br />154 <br />733 <br />4 <br />173 <br />CATION <br />Calcium <br />D <br />MG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />73.3 <br />52 <br />225 <br />28.3 <br />45 <br />CATION <br />Magnesium <br />D <br />MG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />47.4 <br />35 <br />149 <br />12.2 <br />31.1 <br />CATION <br />Sodium <br />D <br />MG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />296 <br />323 <br />967 <br />59.4 <br />119 <br />NUTRIENT <br />Nitrate Nitrogen <br />N <br />MG/L <br />3/26/1984 <br />11/19/2017 <br />81 <br />0.546 <br />0.05 <br />26.4 <br />0.01 <br />3 <br />NUTRIENT <br />NO3-NO2 Nitrogen <br />N <br />MG/L <br />6/29/1981 <br />11/19/2017 <br />90 <br />1.22 <br />0.07 <br />74 <br />0.02 <br />7.91 <br />PRIMARY <br />Arsenic <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />2.3 <br />1 <br />40 <br />0.3 <br />5.8 <br />PRIMARY <br />Cadmium <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />4 <br />5 <br />10 <br />0.5 <br />2 <br />PRIMARY <br />Lead <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />27 <br />20 <br />310 <br />0.1 <br />34 <br />PRIMARY <br />Mercury <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />0.4 <br />0.2 <br />1 <br />0.11 <br />0.3 <br />PRIMARY <br />Selenium <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />1.8 <br />1.8 <br />7 <br />0.1 <br />1.3 <br />SECONDARY <br />Iron <br />D <br />UG/L <br />3/26/1984 <br />11/19/2017 <br />88 <br />89.1 <br />30 <br />1230 <br />10 <br />186 <br />SECONDARY <br />Manganese <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />236 <br />130 <br />1310 <br />5 <br />271 <br />SECONDARY <br />Zinc <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />18 <br />10 <br />60 <br />5 <br />16 <br />TRACE <br />Boron <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />2401 <br />260 <br />440 <br />30 <br />110 <br />TRACE <br />Molybdenum <br />D <br />UG/L 13/30/1983111/19/20171 <br />93 <br />60 <br />50 <br />200 <br />101 <br />50 <br />3/5/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\EMPIRE\AHR 2017 ALL FINALAV5 <br />