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MINREC, INC., NORTH THOMPSON CREEK MINES <br />NORTH THOMPSON CREEK DOWSTREAN <br />Date <br />Parameter <br />Units <br />05/12/10 5/19/2011 9/29/2011 5/31/2012 9/21/2012 5/28/2013 <br />10/30/2013 5/28/2014 <br />09/16/14 <br />05/19/15 <br />09/29/15 <br />05/05/16 <br />09/29/16 <br />MIN <br />MAX <br />AVG <br />pH <br />su <br />7.5 <br />7.5 <br />7.6 <br />7.3 <br />8.0 <br />7.7 <br />7.4 <br />7.3 <br />7.3 <br />7.22 <br />7.20 <br />7.53 <br />7.67 <br />7.2 <br />8.0 <br />7.5 <br />TSS <br />mg/l <br />37 <br />69 <br />1 <br />10 <br />4 <br />9 <br />2 <br />4 <br />10 <br />8 <br />8 <br />6 <br />16 <br />1 <br />69 <br />14 <br />TDS <br />mg/l <br />126 <br />92 <br />125 <br />480 <br />388 <br />132 <br />1150 <br />443 <br />498 <br />488 <br />502 <br />146 <br />172 <br />92 <br />1150 <br />365 <br />Oil & Grease <br />mg/l <br />No Sheen No Sheen No Sheen No Sheen No Sheen No Sheen <br />No Sheen No Sheen <br />14o Sheen 14o <br />Sheen <br />14o Sheen <br />14o Sheen <br />14o Sheen No Sheen No Sheen No Sheen <br />Bicarbonate <br />mg/1 <br />1 <br />28.09 <br />36.54 <br />33.121 <br />36.54 <br />37.11 <br />38.23 <br />28.09 <br />38.23 <br />34.94 <br />Chloride <br />mg/l <br />5.76 <br />4.53 <br />4.83 <br />2.761 <br />2.83 <br />3.721 <br />2.76 <br />5.76 <br />4.07 <br />Calcium <br />mg/l <br />35.20 <br />43.60 <br />41.2 <br />40.8 <br />38.9 <br />30.55 <br />30.55 <br />43.60 <br />38.38 <br />Magnesium <br />mg/l <br />27.0 <br />13.60 <br />12.8 <br />12.4 <br />9.7 <br />7.2 <br />7.2 <br />27.0 <br />13.8 <br />Sodium <br />mg/l <br />12.40 <br />12.10 <br />11.9 <br />12.1 <br />12.4 <br />11.59 <br />11.59 <br />12.40 <br />12.08 <br />Iron <br />ug/l <br />260 <br />180 <br />115 <br />120 <br />83 <br />51 <br />51.0 <br />260.0 <br />134.8 <br />Manganese <br />ug/1 <br />1 <br />60 <br />26.00 <br />221 <br />24 <br />281 <br />22 <br />22.0 1 <br />60.0 <br />30.3 <br />Zinc <br />ug/l <br />22 <br />21.00 <br />18 <br />19 <br />17 <br />11 <br />11.0 <br />22.0 <br />18.0 <br />Sulfate <br />ug/l <br />59.13 <br />46.08 <br />42.17 <br />46.55 <br />45.73 <br />14.41 <br />14.41 <br />59.13 <br />42.35 <br />Copper <br />ug/l <br />7.0 <br />11.00 <br />10 <br />7.0 <br />6 <br />5 <br />5.0 <br />11.0 <br />7.7 <br />Arsenic Tota: <br />ug/l <br />2.18 <br />3.79 <br /><0.2 <br />2.25 <br /><1.0 <br />10.00 <br />25.00 <br /><0.2 <br />25.00 <br />8.64 <br />Arsenic PD <br />ug/l <br />1.47 <br />2.78 <br /><0.2 <br />2.00 <br /><1.0 <br /><10.0 <br />10.00 <br /><0.2 <br />10.00 <br />4.06 <br />Chromium 3 TREC <br />ug/l <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 />Copper, PD <br />ug/l <br />9 <br />20.0 <br /><5.0 <br /><10.0 <br /><10.0 <br /><5.0 <br /><10.0 <br /><5.0 <br />20.0 <br />14.5 <br />Iron, Dissolvec <br />ug/l <br />200 <br />170 <br />90 <br />120 <br />370 <br />18 <br />300 <br />18 <br />370 <br />181.1 <br />Iron, trec <br />ug/l <br />430 <br />600 <br />140 <br />140 <br />770 <br />23 <br />470 <br />23 <br />770 <br />367.6 <br />Manganese, PD <br />ug/l <br />8.0 <br />50.0 <br />20.0 <br /><10 <br />20.0 <br /><10 <br /><10 <br />8.0 <br />50.0 <br />24.5 <br />Mercury, Tot <br />ug/l <br />0.02 1 <br />0.02 <br />0.02 <br />0.03 <br />0.03 <br />0.006 <br />1 <br />0.006 <br />0.030 <br />0.021 <br />Silver, PD <br />ug/1 <br />1 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 />ug/l <br />13.0 <br />4.0 <br /><5.0 <br />40.0 <br />10.0 <br />15.0 <br /><10.0 <br /><5.0 <br />40.0 <br />16.4 <br />Boron, Total <br />mg/l <br />1.05 <br />0.81 <br />0.96 <br />0.76 <br />0.62 <br />0.79 <br />0.71 <br />0.62 <br />1.05 <br />0.81 <br />Sulfide <br />mg/l <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br />