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West Elk Mine 2016 Surface Water and Groundwater Quantity and Quality Data Summary 3 <br />Table 2. Laboratory Parameters for First Five Years of Monitoring <br />(including Baseline Period) <br />Adapted from CDRMS (2006) <br />1. Parameters monitored as a result of PR -10 <br />2. Added to baseline analyses in 1996, not for analyses completed prior to 1996. <br />3. All metals analyzed for their dissolved form unless stated otherwise. <br />4. North Fork of the Gunnison and Middle Sylvester Gulch expanded parameters include those listed in <br />Table 2 for surface water, plus chromium, nickel, silver (total), cyanide (total), iron (total recoverable), <br />alkalinity (Total CaCOA bicarbonate, carbonate, hydroxide; nitrogen (ammonia), ortho-phosphorus <br />(dissolved), and sodium adsorption ratio (SAR). <br />June 2017 HydroGeo, Inc <br />Springs/Surface Water3,4 <br />H lab and field)' <br />Sodium(Na) <br />Electrical conductive at 25° C <br />lab and field Sulfate (SO4_ <br />Temperature (field)' <br />Aluminum Al) <br />Total Dissolved Solids' (TDS) <br />Arsenic As Total Recoverable <br />Total Suspended Solids' TSS <br />Cadmium Cd <br />Sodium Adsorption Ratio (SAR) <br />Copper (Cu <br />Bicarbonate HCO3 <br />Iron (Fe)l Total and Dissolved <br />Calcium(Ca +2 <br />Lead Pb <br />Chloride CI" <br />Manganese (Mn)l Total and Dissolved <br />Hardness2 <br />Mercury (H Total Recoverable <br />Magnesium (Mg+2) <br />Molybdenum Mo <br />Nitrate/Nitrite <br />Selenium (Se) Total Recoverable <br />Phosphate P043 as P) <br />Zinc Zn <br />Potassium <br />Boron B <br />Groundwater <br />H lab and field)' <br />Nitrate/Nitrite <br />Electrical conductive at 250C lab and field)' Phosphate PO4 3 as P <br />Temperature (field)' <br />Potassium <br />Total Dissolved Solids' <br />Turbidity' <br />Sodium Adsorption Ratio SAR <br />Sodium(Na) <br />Bicarbonate HCO3 <br />Sulfate (SO4- <br />Calcium (Ca+2) <br />Arsenic (As) <br />Carbonate (CO3 <br />Cadmium Cd <br />Chloride (Cl") <br />Iron Fe)' Total and Dissolved <br />Hardness2 <br />Manganese Mn)' (Total and Dissolved <br />Magnesium (Mg+2) <br />Lead Pb <br />Ammonia (NH3) <br />Mercury (H <br />Selenium (Se) <br />Zinc Zn <br />Boron B <br />Adapted from CDRMS (2006) <br />1. Parameters monitored as a result of PR -10 <br />2. Added to baseline analyses in 1996, not for analyses completed prior to 1996. <br />3. All metals analyzed for their dissolved form unless stated otherwise. <br />4. North Fork of the Gunnison and Middle Sylvester Gulch expanded parameters include those listed in <br />Table 2 for surface water, plus chromium, nickel, silver (total), cyanide (total), iron (total recoverable), <br />alkalinity (Total CaCOA bicarbonate, carbonate, hydroxide; nitrogen (ammonia), ortho-phosphorus <br />(dissolved), and sodium adsorption ratio (SAR). <br />June 2017 HydroGeo, Inc <br />