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Table: 27 <br />Twentymile Coal, LLC <br />2017 Annual Hydrology Report <br />Water Year Monitoring Data <br />Site:08AT1 (008 -AT -1, Alluvial Well, Trout Creek Alluvium) Datum: 6580.43 <br />2/27/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\AHR ALL FINAL Tables08AT1 (2) <br />Date <br />Depth to Water (FT) <br />4/13/2017 <br />4.03 <br />9/10/2017 <br />5.27 <br />Type <br />Parameter <br />Fraction <br />Units <br />Detection <br />Result <br />Detection <br />Result <br />FIELD <br />pH Field <br />N <br />S.U. <br />Y <br />7.11 <br />Y <br />7.6 <br />FIELD <br />Specific Conductivity,Field <br />N <br />UMHOS/CM <br />Y <br />1290 <br />Y <br />930 <br />FIELD <br />Temperature, Field <br />N <br />DEG -C <br />Y <br />8.7 <br />Y <br />13.5 <br />PHYSICAL <br />pH, Lab <br />N <br />S.U. <br />Y <br />8.1 <br />Y <br />8 <br />PHYSICAL <br />Specific Conductivity,Lab <br />N <br />UMHOS/CM <br />Y <br />1080 <br />Y <br />857 <br />PHYSICAL <br />Total Dissolved Solids Lab <br />N <br />MG/L <br />Y <br />812 <br />Y <br />590 <br />CATION <br />Calcium <br />D <br />MG/L <br />Y <br />127 <br />Y <br />85.1 <br />CATION <br />Magnesium <br />D <br />MG/L <br />Y <br />58.4 <br />Y <br />39.8 <br />CATION <br />Sodium <br />D <br />MG/L <br />Y <br />47.5 <br />Y <br />39.4 <br />ANION <br />Alkalinity, Bicarbonate as CaCO3 <br />N <br />MG/L <br />Y <br />325 <br />Y <br />297 <br />ANION <br />Alkalinity,Carbonate as CaCO3 <br />N <br />MG/L <br />N <br />20 <br />N <br />20 <br />ANION <br />Sulfates <br />N <br />MG/L <br />Y <br />420 <br />Y <br />230 <br />PRIMARY <br />Cadmium <br />D <br />UG/L <br />N <br />0.5 <br />N <br />0.5 <br />PRIMARY <br />Lead <br />D <br />UG/L <br />N <br />200 <br />N <br />200 <br />PRIMARY <br />Mercury <br />D <br />UG/L <br />N <br />1 <br />N <br />1 <br />PRIMARY <br />Selenium <br />D <br />UG/L <br />N <br />0.3 <br />Y <br />2.3 <br />SECONDARY <br />Iron <br />D <br />UG/L <br />Y <br />1840 <br />Y <br />1540 <br />SECONDARY <br />Manganese <br />D <br />UG/L <br />Y <br />1710 <br />Y <br />948 <br />TRACE <br />Molybdenum <br />D <br />UG/L <br />N <br />100 <br />N <br />100 <br />NUTRIENT <br />Ammonia Nitrogen <br />N <br />MG/L <br />Y <br />0.07 <br />Y <br />0.12 <br />NUTRIENT <br />NO3-NO2 Nitrogen <br />N <br />MG/L <br />N <br />0.1 <br />N <br />0.1 <br />NUTRIENT <br />Phosphorus, Ortho hos horus <br />N <br />MG/L IN <br />0.05 <br />IN <br />0.05 <br />2/27/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\AHR ALL FINAL Tables08AT1 (2) <br />