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West Elk Mine 2016 Surface Water and Groundwater Quantity and Quality Data Summary 19 <br />Table 10. Summary of Spring and Seep Water Quality Parameters Elevated <br />10 Percent or More above Baseline Maximum Values <br />Site Name <br />Sample <br />Date <br />Parameter <br />Units Result <br />Baseline Maximum <br />Value <br />Spring 26-1 <br />9/5/2016 <br />Conductivity (Field) <br />µmhos/cm 810 <br />640 <br />Spring G-7 <br />5/25/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 284 <br />230 <br />Spring G-24 <br />5/27/2016 <br />Conductivity @25C <br />[mhos/cm 798 <br />564 <br />Spring G-14 <br />5/27/2016 <br />Conductivity @25C <br />µmhos/cm 1,030 <br />682 <br />5/25/2016 <br />Conductivity @25C <br />µmhos/cm 1,180 <br />640 <br />Spring G-22 <br />5/25/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 754 <br />516 <br />5/5/2016 <br />Conductivity (Field) <br />2,340 <br />µmhos/cm <br />2,230 <br />1,240 <br />5/27/2016 <br />Spring 15-1 <br />5/27/2016 <br />Conductivity @25C <br />µmhos/cm 1,970 <br />1,120 <br />5/27/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 1,410 <br />730 <br />Spring G-31 <br />5/23/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 564 <br />505 <br />5/23/2016 <br />Conductivity @25C <br />µmhos/cm 1,870 <br />1,320 <br />Spring G-25 <br />5/23/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 1,380 <br />1,170 <br />5/5/2016 <br />Conductivity (Field) <br />661 <br />µmhos/cm <br />657 <br />480 <br />5/24/2016 <br />Spring J-4 <br />5/24/2016 <br />Conductivity @25C <br />µmhos/cm 606 <br />429 <br />5/24/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 384 <br />300 <br />5/24/2016 <br />Conductivity @25C <br />gmhos/cm 800 <br />660 <br />Deer Creek Spring <br />5/24/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 464 <br />360 <br />5/24/2016 <br />Conductivity @25C <br />[mhos/cm 661 <br />426 <br />Spring J-7 <br />5/24/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 398 <br />270 <br />5/24/2016 <br />Residue, Non -Filterable (TSS) @105C <br />mg/L 31.0 <br />24 <br />5/25/2016 <br />Alkalinity (Total CaCO3) <br />mg/L 47.9 <br />380 <br />5/25/2016 <br />Aluminum, dissolved <br />mg/L 007 <br />005 <br />5/25/2016 <br />Arsenic, total recoverable <br />mg/L 0.0003 <br />Not Detected (<0 0002) <br />5/25/2016 <br />Bicarbonate as CaCO3 <br />mg/L 47.9 <br />38.0 <br />5/25/2016 <br />Boron, dissolved <br />mg/L 001 <br />Not Detected (<0 01) <br />5/25/2016 <br />Hardness as CaCO3 <br />mg/L 28 <br />25 <br />Spring 2012-2 <br />5/25/2016 <br />Iron, total <br />mg/L 124 <br />104 <br />5/25/2016 <br />Magnesium, dissolved <br />mg/L 2 <br />16 <br />5/25/2016 <br />Manganese, total <br />mg/L 0.014 <br />0 009 <br />5/25/2016 <br />TDS (calculated) <br />mg/L 514 <br />45 <br />5/25/2016 <br />Residue, Filterable (TDS) @180C <br />mg/L 100 <br />80 <br />5/25/2016 <br />Residue, Non -Filterable (TSS) @105C <br />mg/L 50 <br />Not Detected (<5 0) <br />5/25/2016 <br />Zinc, dissolved <br />mg/L 002 <br />Not Detected (<0 01) <br />5/25/2016 <br />Chloride <br />mg/L 23 <br />2 <br />Spring 2012-3 <br />5/25/2016 <br />Nitrate/Nitrite (as N) <br />mg/L 0.23 <br />016 <br />5/25/2016 <br />Chloride <br />mg/L 24 <br />2 <br />Spring 2012-4 <br />5/25/2016 <br />Nitrate/Nitrite (as N) <br />mg/L 007 <br />003 <br />June 2017 HydroGeo, Ina <br />