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Ouray Silver Mines Inc. Tables <br /> Technical Revision 09 <br /> Table 8. Waste Rock Leachate (SPLP) Quality <br /> Pre-exisiting Waste <br /> Analyte Units Rock 6/27/2014 6/27/2014 17/19/2016 <br /> Aluminum mg/L 0.13 0.26 0.73 <br /> Antimony mg/L 0.0114 0.0033 0.0009 <br /> Arsenic mg/L 0.0024 0.0012 0.0032 <br /> Barium mg/L 0.0074 0.1822 0.0078 <br /> Beryllium mg/L ND ND ND <br /> Bicarbonate as CaCO3 mg/L 35 24 13.8 <br /> Boron mg/L ND ND 0.01 <br /> Bromide mg/L 0.185 1.97 ND <br /> Cadmium mg/L ND ND ND <br /> Calcium mg/L 12.6 14.2 9.6 <br /> Carbon,total organic(TOC) mg/L ND ND ND <br /> Carbonate as CaCO3 mg/L it 15 27.5 <br /> Chloride mg/L ND ND ND <br /> Chromium mg/L ND ND ND <br /> Cobalt mg/L ND ND 0.00009 <br /> Conductivity @25C umhos/cm 116 133 91.5 <br /> Copper mg/L 0.0065 0.0016 ND <br /> Fluoride mg/L 0.69 0.17 0.11 <br /> Hardness as CaCO3 mg/L 33 38 25 <br /> Hydroxide as CaCO3 mg/L ND ND ND <br /> Iron mg/L ND ND 0.09 <br /> Lead mg/L 0.0018 0.0004 0.0011 <br /> Lithium mg/L ND ND ND <br /> Magnesium mg/L 0.4 0.5 0.3 <br /> Manganese mg/L 0.0112 0.008 0.0038 <br /> Mercury mg/L ND ND ND <br /> Molybdenum mg/L 0.059 0.0033 0.0007 <br /> Nickel mg/L ND ND ND <br /> Nitrate mg/L 0.08 0.17 0.06 <br /> Nitrate/Nitrite as N mg/L 0.08 0.17 0.06 <br /> Nitrite as N mg/L ND ND ND <br /> Nitrogen,ammonia mg/L ND ND 0.64 <br /> pH units 8.7 8.8 9.5 <br /> pH measured at C 23.8 23.8 23.3 <br /> Phosphorus, ortho dissolved mg/L ND ND ND <br /> Phosphorus,Total mg/L ND ND ND <br /> Potassium mg/L 3.7 3.5 1.5 <br /> Residue, Filterable(TDS) mg/L 60 70 58 <br /> Residue, Non-Filter(TSS) mg/L ND ND ND <br /> Selenium mg/L 0.0002 0.0005 ND <br /> Silica mg/L 4.3 4.6 7.7 <br /> Silver mg/L 0.00019 0.00018 ND <br />