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Ouray Silver Mines Inc.Technical Revision 09 TablesTable 2. Metallurgical Sample Water Quality235688 WW 235689 WW 236163 WWAluminum, total mg/L ND 2.21 0.09Antimony, total mg/L ND ND 0.41Arsenic, total mg/L ND ND NDBarium, total mg/L 0.1 0.076 0.118Beryllium, total mg/L ND ND ND <br />Bicarbonate as CaCO3 mg/L 50.2 ND ND <br />Boron, total mg/L 0.08 0.12 0.12 <br />Cadmium, total mg/L ND ND 0.03 <br />Calcium, total mg/L 54 121 276 <br />Carbon, total organic (TOC) mg/L 6.5 27.9 14.2 <br />Carbonate as CaCO3 mg/L ND 32.8 ND <br />Chromium, total mg/L ND ND ND <br />Conductivity @25C umhos/cm 540 787 1490 <br />Copper, total mg/L ND 0.55 0.05 <br />Hydroxide as CaCO3 mg/L ND ND ND <br />Iron, total mg/L ND 1.16 0.09 <br />Lead, total mg/L 0.2 0.28 1.83 <br />Magnesium, total mg/L 11 1.1 20.5 <br />Manganese, total mg/L 0.04 0.05 18 <br />Mercury, total mg/L ND ND ND <br />Molybdenum, total mg/L 0.2 0.84 ND <br />Nickel, total mg/L ND ND 0.04 <br />pH s.u. 8 10.2 5.9 <br />pH measured at C 23.3 23.3 23.4 <br />Phosphorus, ortho dissolved mg/L ND ND ND <br />Potassium, total mg/L 8 25.2 10.3 <br />Selenium, total mg/L ND ND ND <br />Silica, total mg/L 12 7.3 6.1 <br />Silver, total mg/L ND ND ND <br />Sodium, total mg/L 31 47.6 36 <br />Sulfate mg/L 64.4 195 673 <br />Sulfite mg/L 2 5 2 <br />Thallium, total mg/L ND ND ND <br />Total Alkalinity mg/L 50.2 33.2 ND <br />Vanadium, total mg/L ND ND ND <br />Zinc, total mg/L ND 0.2 1.65 <br />Notes: <br />ND = Not Detected <br />ConcentrationAnalyte Units