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Table: 17A <br />Williams Fork Mine <br />2017 Annual Hydrology Report <br />Period of Record <br />Site: AV6, Well AVF-6 , Williams Fork Alluvium Datum: 6146.23 <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 />135 <br />7.38 <br />7.39 <br />8.22 <br />6.8 <br />0.257 <br />FIELD <br />Specific Conductivity, Field <br />N <br />UMHOS/CM <br />1/26/1982 <br />11/19/2017 <br />135 <br />1578.12 <br />1600 <br />3000 <br />630 <br />276.132 <br />FIELD <br />Temperature, Field <br />N <br />DEG -C <br />5/27/1982 <br />11/19/2017 <br />131 <br />10.3 <br />10.5 <br />23.1 <br />4 <br />3.5 <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 />545 <br />543 <br />917 <br />263 <br />121 <br />PHYSICAL <br />Hardness <br />N <br />MG/L <br />3/16/1992 <br />11/19/2017 <br />16 <br />490 <br />510 <br />732 <br />258 <br />123 <br />PHYSICAL <br />Hydroxide as OH <br />N <br />MG/L <br />8/14/1991 <br />11/19/2017 <br />38 <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 />99 <br />7.7 <br />7.7 <br />8.6 <br />6.8 <br />0.343 <br />PHYSICAL <br />Specific Conductivity, Lab <br />N <br />UMHOS/CM <br />6/29/1981 <br />11/19/2017 <br />100 <br />1489 <br />1525 <br />2230 <br />556 <br />360.2 <br />ANION <br />Alkalinity,Bicarbonate as CaCO3 <br />N <br />MG/L <br />3/16/2009 <br />11/19/2017 <br />14 <br />507 <br />523 <br />590 <br />321 <br />64.9 <br />ANION <br />Chloride <br />N <br />MG/L <br />6/29/1981 <br />11/19/2017 <br />100 <br />26 <br />22 <br />92 <br />3.4 <br />19 <br />ANION <br />Sulfates <br />N <br />MG/L <br />6/29/1981 <br />11/19/2017 <br />100 <br />338 <br />353 <br />759 <br />10 <br />181 <br />CATION <br />Calcium <br />D <br />MG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />129 <br />135 <br />234 <br />30.3 <br />45.9 <br />CATION <br />Magnesium <br />D <br />MG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />71.4 <br />75.9 <br />123 <br />19.5 <br />22.2 <br />CATION <br />Sodium <br />D <br />MG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />146 <br />123 <br />451 <br />30 <br />83.4 <br />NUTRIENT <br />Nitrate Nitrogen <br />N <br />MG/L <br />3/26/1984 <br />11/19/2017 <br />81 <br />0.046 <br />0.02 <br />0.5 <br />0.02 <br />0.074 <br />NUTRIENT <br />NO3-NO2 Nitrogen <br />N <br />MG/L <br />6/29/1981 <br />11/19/2017 <br />90 <br />0.065 <br />0.03 <br />0.47 <br />0.02 <br />0.084 <br />PRIMARY <br />Arsenic <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />2 <br />1 <br />40 <br />0.2 <br />6 <br />PRIMARY <br />Cadmium <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />4 <br />5 <br />ill <br />0.5 <br />2.1 <br />PRIMARY <br />Lead <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />25 <br />20 <br />130 <br />0.1 <br />20 <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 />0.1 <br />0.3 <br />PRIMARY <br />Selenium <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />2.4 <br />1 <br />32 <br />0.1 <br />5.3 <br />SECONDARY <br />Iron <br />D <br />UG/L <br />3/26/1984 <br />11/19/2017 <br />89 <br />156 <br />50 <br />1600 <br />5 <br />249 <br />SECONDARY <br />Manganese <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />144 <br />120 <br />769 <br />8 <br />128 <br />SECONDARY <br />Zinc <br />D <br />UG/L <br />3/30/1983 <br />11/19/2017 <br />93 <br />18 <br />10 <br />100 <br />5 <br />18 <br />TRACE <br />I Boron <br />D <br />UG/L <br />3/30/1983 <br />11/19/20171 <br />931 <br />110 <br />90 <br />390 <br />20 <br />77 <br />TRACE <br />lMolybdenum <br />D <br />UG/L <br />3/30/1983111/19/20171 <br />931 <br />601 <br />50 <br />200 <br />10 <br />50 <br />3/5/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\EMPIRE\AHR 2017 ALL FINALAV6 <br />