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Table: 14A <br />Williams Fork Mine <br />2017 Annual Hydrology Report <br />Period of Record <br />Site: 9MN, #9 Mine Well , Twentymile Sandstone Datum: 6383.29 <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 />87 <br />7.4 <br />7.34 <br />8.7 <br />6.6 <br />0.443 <br />FIELD <br />Specific Conductivity, Field <br />N <br />UMHOS/CM <br />1/26/1982 <br />11/19/2017 <br />87 <br />720 <br />620 <br />3500 <br />428 <br />374 <br />FIELD <br />Temperature, Field <br />N <br />DEG -C <br />5/27/1982 <br />11/19/2017 <br />83 <br />13.5 <br />13 <br />23.1 <br />9.7 <br />2.89 <br />PHYSICAL <br />Alkalinity as CaCO3, @ pH 4.5 <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />27 <br />296 <br />296 <br />394 <br />193 <br />37.6 <br />PHYSICAL <br />Hardness <br />N <br />MG/L <br />5/5/2011 <br />4/11/2017 <br />5 <br />464 <br />4571 <br />559 <br />358 <br />73.4 <br />PHYSICAL <br />Hydroxide as OH <br />N <br />MG/L <br />6/4/1992 <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 />28 <br />7.87 <br />7.84 <br />9.1 <br />7 <br />0.427 <br />PHYSICAL <br />Specific Conductivity, Lab <br />N <br />UMHOS/CM <br />3/30/1981 <br />4/11/2017 <br />28 <br />668 <br />615 <br />1310 <br />380 <br />215 <br />ANION <br />Alkalinity, Bicarbonate as CaCO3 <br />N <br />MG/L <br />5/20/2009 <br />4/11/2017 <br />4 <br />381 <br />392 <br />480 <br />260 <br />90.7 <br />ANION <br />Chloride <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />27 <br />9.31 <br />3 <br />39.9 <br />2 <br />12.4 <br />ANION <br />Sulfates <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />27 <br />65.1 <br />47 <br />225 <br />4 <br />60 <br />CATION <br />Calcium <br />D <br />MG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />75.3 <br />78.5 <br />128 <br />35.1 <br />24.3 <br />CATION <br />Magnesium <br />D <br />MG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />35.4 <br />32 <br />58.2 <br />22 <br />10.4 <br />CATION <br />Sodium <br />D <br />MG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />17.905 <br />15.001 <br />30 <br />9.9 <br />6.5545 <br />NUTRIENT <br />Nitrate Nitrogen <br />N <br />MG/L <br />3/5/1985 <br />4/11/2017 <br />17 <br />0.03 <br />0.021 <br />0.08 <br />0.02 <br />0.02 <br />NUTRIENT <br />NO3-NO2 Nitrogen <br />N <br />MG/L <br />3/30/1981 <br />4/11/2017 <br />29 <br />0.049 <br />0.031 <br />0.12 <br />0.02 <br />0.036 <br />PRIMARY <br />Arsenic <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />4 <br />21 <br />40 <br />0.5 <br />9 <br />PRIMARY <br />Cadmium <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />4 <br />41 <br />10 <br />0.5 <br />2 <br />PRIMARY <br />Lead <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />20 <br />20 <br />50 <br />0.2 <br />10 <br />PRIMARY <br />Mercury <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />0.4 <br />0.2 <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 />20 <br />1 <br />1 <br />4 <br />0.3 <br />0.9 <br />SECONDARY <br />Iron <br />D <br />UG/L <br />3/5/1985 <br />4/11/2017 <br />19 <br />590 <br />80 <br />3760 <br />10 <br />1080 <br />SECONDARY <br />Manganese <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />145 <br />55.51 <br />842 <br />40 <br />199 <br />SECONDARY <br />Zinc <br />ID <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />305 <br />255 <br />1200 <br />10 <br />306 <br />TRACE <br />I Boron <br />I D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />40 <br />30 <br />90 <br />20 <br />20 <br />TRACE <br />Mol bdenum <br />D <br />UG/L <br />6/29/1983 <br />4/11/2017 <br />20 <br />60 <br />50 <br />200 <br />10 <br />60 <br />3/5/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\EMPIRE\AHR 2017 ALL FINAL9MN <br />