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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 />9/29/2011 <br />MIN <br />MAX <br />AVG <br />pH <br />su <br />7.4 <br />7.6 <br />6.8 <br />6.77 <br />7.6 <br />7.3 <br />TSS <br />mg/1 <br />34 <br />25 <br />1 <br />1 <br />34 <br />20 <br />TDS <br />mg/1 <br />141 <br />125 <br />131.00 <br />125 <br />141 <br />132 <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 />Arsenic Total <br />ug/1 <br />4.00 <br />2.75 <br /><2.0 <br /><2.0 <br />4.00 <br />3.38 <br />Arsenic PD <br />ug/I <br />3.81 <br />2.66 <br /><2.0 <br /><2.0 <br />3.81 <br />3.24 <br />Chromium 3 TREC <br />ug/1 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />Copper, PD <br />ug/1 <br />38 <br />20 <br /><5.0 <br /><5.0 <br />38 <br />29 <br />Iron, Dissolved <br />ug/1 <br />230 <br />230 <br />90.0 <br />90 <br />230 <br />183 <br />Iron, trec <br />ug/1 <br />440 <br />380 <br />170.0 <br />170 <br />440 <br />330 <br />Manganese, PD <br />ug/1 <br />8.0 <br />18.0 <br />20.0 <br />8.0 <br />20.0 <br />15.3 <br />Mercury, Tot <br />ug/1 <br />0.02 <br />0.03 <br />0.02 <br />0.03 <br />0.03 <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 />Zinc, PD <br />ug/1 <br />50.0 <br />21.0 <br /><5.0 <br />21.0 <br />50.0 <br />35.5 <br />Boron, Total <br />mg/1 <br />0.69 <br />0.18 <br />1.03 <br />0.18 <br />1.03 <br />0.63 <br />Sulfide <br />mg/1 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br /><0.2 <br />