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Mr. Randy McClure/Rio Grande Silver,Inc. 11 <br /> MLI Job No. 3819 -November 26, 2014 <br /> Table 10.- Comparative Static and Kinetic Test Acidity, Sulfate and Alkalinity, <br /> Generation Data,Bulldog Project <br /> Acidity,mg/kg Sulfate,mg/kg Alkalinity,mg/kg <br /> Max. Generated Max. Generated Max. Generated <br /> Sample from HC Pct. of from HC Pct. of from HC Pct. of <br /> Designation Solids') Test Total Solids2) Test Total Solids3l Test Total <br /> BDP-F1391-051113 1,600 182.18 11.39 3,600 1,102.00 30.61 2,000 27.38 1.37 <br /> BDP-TBWTC-HC 900 0.00 0.00 1,500 303.5 20.23 6,300 231.55 3.68 <br /> 1) AGP(tons CaCO3/1,000 tons)x 1,000. <br /> 2) Total S as SOa converted from weight percent to mg/kg. <br /> 3) ANP(tons CaCO3/1,000 tons)x 1,000. <br /> CONCLUSION <br /> The kinetic humidity cell data for the BDP-F1391-051113 sample followed the static ABA <br /> prediction. The sample does not appear to be significantly acid producing or neutralizing but <br /> more circumneutral as predicted by static testing. After 15 weeks of kinetic testing, the data for <br /> the BDP-TBWTC-HC sample demonstrates that this sample is not acid producing. <br /> Michael Medina <br /> Environmental Project Manager <br /> MM/mh <br /> McCLELLAND LABORATORIES, INC. <br />