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Sl1NYSIDE GOLD CORPORATION <br /> W PAOJECT-LDADING PREDICTION DATA COIPARISON <br /> fffffiffffffff!!flff!!f!lfDISSOLVED METALS (ppm)!ff!lffflfffflffffffflfflf! <br /> PROJECT# fETIND Al Cd Cu Fe Mn PB Zn <br /> 26 TCLP-1312 0.5 0.005 1.17 28.1 0.18 4.59 1.91 <br /> 26 1:20 H2O 10min.Bath 1.33 0.003 1.9 6.6 0.06 2.4 1.4 <br /> 26 Stormater 8.2 0.01 8.55 255 0.41 2 2.92 <br /> 26 - 1:1 H2O 10min.Bath 34 0.05 17 510 1.4 2 17 <br /> 26 1:1 H2O 30min.Bath 32 0.012 22 569 1.83 2.07 18.9 <br /> The win diference is most likely due to dilution differences as exposure time does not appear to be <br /> the controlling factor. <br /> TCLP-1312 is a HW digestion with 20:1 dilution and is comparable to a 20:1 H2O bath. <br /> The sites are acidic ( HW ) and dilution during store events is based on size of store , permeability , etc. <br /> 1:1 H2D bath depends on sample for acidity and would be like a small to medium storm event. <br /> Exposure does not appear to be critical. <br /> The stormwater sample was taken during a prolonged storm event and was a combination of direct rainfall contact <br /> water and run-on water with minimal contact time. <br /> Metal concentrations were expected to be between 1:1 and 20:1 dilutions. <br /> Conclusion: <br /> 1:1 dilution exposure will predict estimated stor water metal concentrations for most situations. <br /> Exceptions would be where ; rwv water is present (flaw would be greater and concentrations less). <br /> groundwater is present. <br /> precipitation rate exceeds infiltration rate and runoff rate is (( 10 min.. <br /> — 15 — <br />