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• ~ • <br />Table C-12 <br />Upper Gribble Gulch -Water Quali and Field Parameters <br /> Baseline Sample Dates <br />Field Parameters Units Minimum Maximum Mean 6/9/98 6124/98 9/24/98 <br />Flow gpm dry dry d <br />Conductivity (Field) umhos/cm <br />pH (Field) SU <br />Temperature 'C <br />Laboratory Parameters Units <br />Alkalinity, total mg/L <br />Aluminum, total mg/L <br />Arsenic, total mg/L <br />Bicarbonate mg/L 212 334 273 <br />Cadmium, total mg/L <br />Calcium, dissolved mg/L 78.8 78 8 78.8 <br />Carbonate mg/L <br />Chloride mglL 0 2 1 <br />Conductivity (Lab) umhos/cm 430 430 430 <br />Copper, total mg/L <br />Hardness mg/L 250 315 283 <br />Hydroxide mg/L <br />Iron, dissolved mglL 0.05 0.05 0.05 <br />Iron, total mg/L 0.2 13.8 7.0 <br />Lead, total mg/L <br />Magnesium, dissolved mg/L 28.8 28.8 28.6 <br />Manganese, dissolved mg/L 0 0 0 <br />Manganese, total mg/L 0.000 0.222 0.111 <br />Mercury, total mg/L <br />Molybdenum, total mglL <br />Nitrate (as N), dissolved mg/L <br />NitrateMitdle (as N) mglL 0.05 0,05 0.05 <br />Nitrite (as N), dissolved mg/L <br />pH (Lab) 5U 8.5 8.5 8.5 <br />Phosphate (Ortho), dissolved mg/L 0.027 0.028 0.028 <br />Selenium, total mg/L <br />Sodium Absorbtion Ratio 0.17 0.65 0.47 <br />Sodium, dissolved mg/L 26.6 26.6 26.6 <br />Sulfate mg/L 0 60 30 <br />Total Dissolved Solids (Lab) mg/L 260 360 310 <br />Total Suspended Solids mg/L 0 2080 1040 <br />Turbidity (Lab) NTU <br />inc, o a mg <br />SurfacegB.xls West Elk Mine <br />5/tz/sg 1998 Annual Hydrology Report Wright Water Engineers <br />