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MINREC, INC., NORTH THOMPSON CREEK MINES <br />NORTH THOMPSON CREEK UPSTREAM <br />Date <br />Parameter <br />Units <br />05/12/10 <br />05/19/11 <br />9/29/201115/31/2012 <br />9/21/2012 <br />5/28/2013 <br />10/30/2013 <br />5/28/2014 <br />09/16/14 <br />MIN <br />MAX <br />AVG <br />pH <br />su <br />7.4 <br />7.6 <br />6.8 <br />7.2 <br />7.8 <br />7.6 <br />7.0 <br />7.6 <br />7.3 <br />6.77 <br />7.8 <br />7.4 <br />TSS <br />mg /I <br />34 <br />25 <br />1 <br />2 <br />2 <br />9 <br />2 <br />6 <br />9 <br />1 <br />34 <br />10 <br />TDS <br />mg /1 <br />141 <br />125 <br />131 <br />380 <br />376 <br />125 <br />1148 <br />520 <br />508 <br />125 <br />1148 <br />384 <br />Oil & Grease <br />mg /1 <br />No Sheen <br />No Sheen <br />No Sheen <br />No Sheen <br />No Sheen <br />No Sheen <br />No Sheen <br />No Sheen <br />qo Sheen <br />No Sheen <br />No Sheen <br />No Sheen <br />Bicarbonate <br />mg /1 <br />35.11 1 <br />41.54 <br />35.11 <br />41.54 <br />38.33 <br />Chloride <br />mg /1 <br />6.24 <br />5.76 <br />5.76 <br />6.24 <br />6.00 <br />Calcium <br />mg /1 <br />42.0 <br />43.6 <br />42.00 <br />43.60 <br />42.80 <br />Magnesium <br />mg /I <br />25.8 <br />13.6 <br />13.6 <br />25.8 <br />19.7 <br />Sodium <br />mg 11 <br />11.00 <br />14.5 <br />1 <br />11.00 <br />14.50 <br />12.75 <br />Iron <br />ug /1 <br />300 <br />280.0 <br />280.0 <br />300.0 <br />1 290.0 <br />Manganese <br />ug /I <br />60 <br />1 46.0 <br />46.0 <br />60.0 <br />53.0 <br />Zinc <br />ug /1 <br />24 <br />23.0 <br />23.0 <br />24.0 <br />23.5 <br />Sulfate <br />ug /1 <br />66.28 <br />58.0 <br />58.03 <br />66.28 <br />62.16 <br />Copper <br />ug /I <br />8 <br />11.0 <br />8.0 <br />11.0 <br />9.5 <br />Arsenic Total <br />ug /I <br />4.00 <br />2.75 <br /><2.0 <br />2.18 <br /><1.0 <br />12.0 <br />4.0 <br />1 <2.0 <br />12.0 <br />5.0 <br />Arsenic PD <br />ug /l <br />3.81 <br />2.66 <br /><2.0 <br />2.00 <br /><1.0 <br />10.0 <br />3.0 <br /><2.0 <br />10.0 <br />4.3 <br />Chromium 3 THE <br />ug /1 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />I <br /><1.0 <br /><1.0 <br /><1.0 <br />Copper, PD <br />ug /1 <br />1 38 <br />20 <br /><5.0 <br /><10.0 <br />20.0 <br /><5.0 <br /><10.0 <br /><5.0 <br />38 <br />26 <br />Iron, Dissolved <br />ug /l <br />230 <br />230 <br />90 <br />100 <br />320 <br />15 <br />310 <br />15 <br />320 <br />185 <br />Iron, trec <br />ug /1 <br />440 <br />380 <br />170 <br />120 <br />750 <br />21 <br />1 460 <br />21 <br />1 750 <br />334 <br />Manganese, PD <br />ug /1 <br />8.0 <br />18.0 <br />20.0 <br />10.0 <br />20.0 <br /><10.0 <br /><10.0 <br /><10.0 <br />20.0 <br />15.2 <br />Mercury, Tot <br />ug /1 <br />0.02 <br />0.03 <br />0.02 <br />0.03 <br />0.03 <br />0.006 <br />0.006 <br />0.030 <br />0.023 <br />Silver, PD <br />ug /1 <br />1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />1.0 <br />1.0 <br />Zinc, PD <br />u /1 <br />1 50.0 <br />21.0 <br /><5.0 <br />50.0 <br />20.0 <br />15.0 <br /><1.0 <br />15.0 <br />50.0 <br />31.2 <br />Boron, Total <br />mg /1 <br />0.69 <br />0.18 <br />1.03 <br />0.72 <br />0.66 <br />0.78 <br />0.69 <br />0.18 <br />1.03 <br />0.68 <br />Sulfide <br />mg /1 <br />1 <0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br />1 <0.2 <br /><0.2 <br />