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Table: 21 <br />Twentymile Coal, LLC <br />2017 Annual Hydrology Report <br />Water Year Monitoring Data <br />Site: 08AV2 (008 -AV -2, Alluvial Well, Foidel Creek Alluvium) Datum: 6677.1 <br />2/27/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\AHR ALL FINAL Tables08AV2 (2) <br />Date <br />Depth to Water (FT) <br />4/13/2017 <br />9.03 <br />9/10/2017 <br />10.92 <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 />7.2 <br />Y <br />7.54 <br />FIELD <br />Specific Conductivity, Field <br />N <br />UMHOS/CM <br />Y <br />1610 <br />Y <br />1600 <br />FIELD <br />Temperature, Field <br />N <br />DEG -C <br />Y <br />8.1 <br />Y <br />13.1 <br />PHYSICAL <br />pH, Lab <br />N <br />S.U. <br />Y <br />8.3 <br />Y <br />8 <br />PHYSICAL <br />Specific Conductivity, Lab <br />N <br />UMHOS/CM <br />Y <br />1380 <br />Y <br />1550 <br />PHYSICAL <br />Total Dissolved Solids Lab <br />N <br />MG/L <br />Y <br />1120 <br />Y <br />1170 <br />CATION <br />Calcium <br />D <br />MG/L <br />Y <br />153 <br />Y <br />167 <br />CATION <br />Magnesium <br />D <br />MG/L <br />Y <br />64.6 <br />Y <br />67.2 <br />CATION <br />Sodium <br />D <br />MG/L <br />Y <br />95 <br />Y <br />95.9 <br />ANION <br />Alkalinity,Bicarbonate as CaCO3 <br />N <br />MG/L <br />Y <br />460 <br />Y <br />442 <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 />460 <br />Y <br />500 <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 />Y <br />0.1 <br />N <br />0.3 <br />SECONDARY <br />Iron <br />D <br />UG/L <br />Y <br />300 <br />Y <br />720 <br />SECONDARY <br />Manganese <br />D <br />UG/L <br />Y <br />556 <br />Y <br />1120 <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 />0.14 <br />Y <br />0.37 <br />NUTRIENT <br />NO3-NO2 Nitrogen <br />N <br />MG/L <br />Y <br />0.07 <br />F: <br />0.1 <br />NUTRIENT <br />I Phosphorus, Orthophosphorus <br />N <br />MG/L <br />Y <br />0.03 <br />IN <br />0.05 <br />2/27/2018 I:\Environmental\CDMG - CDRMS\AHR\2017\AHR ALL FINAL Tables08AV2 (2) <br />