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West Elk Mine 2008 Annual Hydrology Report 9 <br />• <br />• <br />• <br />Table 2 <br />Laboratory Parameters <br />First 5 Years of Monitoring (including Baseline) <br />Springs/Surface Water3,4 <br />pH (lab and field)' Sodium (Na+) <br />Conductivity at 257C (lab and field) Sulfate (S04-) <br />Temperature (field) Aluminum (Al) <br />Total Dissolved Solids' Arsenic (As) (Total Recoverable) <br />Total Suspended Solids' Cadmium (Cd) <br />Sodium Adsorption Ratio (SAR) Copper (Cu) <br />Bicarbonate (HCO3-) Iron (Fe) (Total and Dissolved) <br />Calcium (Ca 12) Lead (Pb) <br />Chloride (CI-) Manganese (Mn) (Total and Dissolved) <br />Hardness Mercury (Hg) (Total Recoverable) <br />Magnesium (Mg+) Molybdenum (Mo) <br />Nitrate -Nitrite Selenium (Se) (Total Recoverable) <br />Phosphate (P04-' as P) Zinc (Zn) <br />Potassium Boron (B) <br />Groundwater3 <br />pH (lab and field) Nitrate-Nitrite <br />Conductivity at 25'C (lab and field) Phosphate (PO4 as P) <br />Temperature (field) Potassium <br />Total Dissolved Solids Turbidity <br />Sodium Adsorption Ratio (SAR) Sodium (Na) <br />Bicarbonate (HCO3-) Sulfate (SO4) <br />Calcium (Ca +2) Arsenic (As) <br />Carbonate (C03) Cadmium (Cd) <br />Chloride (CI-) Iron (Fe)' (Total and Dissolved) <br />Hardness Man anew (Mn)'(Total and Dissolved) <br />Magnesium (Mg+) Lead (Pb) <br />Ammonia (NH3) Mercury (Hg) <br />Selenium (Se) Zinc (Zn) <br /> Boron (B) <br />Notes: <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 parameters 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), nitrite(as N), nitrate (as <br />N), alkalinity (Total CaCO3), carbonate, hydroxide, and ortho-phosphate <br />Adapted from CDRMS (2006) <br />June 2009 HydroGeo, Inc.