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NORTH THOMPSON CREEK DOWNSTREAM <br /> WATER QUALITY DATA <br /> Pre-Permit <br /> 10-25-83 04-25-84 05-30-84 09-17-84 Mean <br /> Ammonia 0.30 0.24 0.50 0.54 <br /> Sulfate 31.7 13.5 16.5 52 40.86 <br /> Cadmium 0.0000 0.0000 0.0000 0.0000 0.0000 <br /> Chloride 5.6 4.8 1.6 6.0 6.24 <br /> Copper 0.000 0.005 0.001 0.006 0.010 <br /> Lead 0.003 0.000 0.000 0.000 <br /> Iron 0.000 0.050 0.106 0.000 0.010 <br /> Manganese 0.016 0.009 0.020 0.009 0.000 <br /> Selenium 0.000 0.000 0.001 0.000 0.000 <br /> Silver 0.0000 0.0000 0.0000 0.0000 <br /> Zinc 0.020 0.006 0.001 0.002 0.020 <br /> Calcium 35.4 40.58 <br /> Magnesium 13.2 6.67 5.0 12.4 10.59 <br /> Potassium 1.2 0.97 1.11 1.5 1.03 <br /> Sodium 22.8 7.14 3.33 27.7 13.26 <br /> Bicarbonate 182 19.4 67.4 165 138.52 <br /> Carbonate 0.000 0.000 0.000 0.000 1.92 <br /> Total Dissolved Solids 208 246 104 260 217.6 <br /> Total Suspended Solids 12.6 474 98 118 41.13 <br /> <br /> All parameters in Mg/L <br /> <br />