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• • <br />Project: Cripple Creek Hydrogeochemistry NAG TEST <br />Task: Neutralization of Pyrite Oxidation Product <br />T.604-224-4331 F:604-224-0540 info@vizonsciteccom www.vizonstitec.com <br />Vizon SciTec Inc 3650 Wesbrook Moll Vancouver, BC Canada V6S 21-2 <br />Results of Static NAG Testing on Cripple Creek Samples - March 2006 <br />WIZON <br />\ S C I T E C <br />• <br />Date: 4/8/2008 <br />Page 6-1 <br />Sample NAG <br />pH NaOH <br />to pH 4.5 <br />(ml) NaOH <br />to pH 7.0 <br />(ml) NaOH <br />Conc. <br />(N) Sample <br />Weight <br />(g) NAG Acidity <br />pH 4.5 <br />(kg H2SO4/tonne) NAG Acidity <br />pH 7.0 <br />(kg H2SO4/tonne) <br />South Cresson 2.55 13.20 16.90 0.1 1.0 . 64.7 82.8 <br />Cresson Pipe 7.03 0.00 0.00 0.1 2.5 0.0 0.0 <br />Squaw Gulch 10.95 0.00 0.00 0.1 2.5 0.0 0.0 <br />South Cresson-Cresson Pipe 5.59 0.00 1.30 0.1 2.5 0.0 2.5 <br />South Cresson-Squaw Gulch 8.06 0.00 0.00 0.1 2.5 0.0 0.0 <br />Cresson Pipe-Squaw Gulch 7.15 0.00 0.00 0.1 2.5 0.0 0.0 <br />QA/QC <br />South Cresson - Dup 2.54 13.50 17.00 0.1 1.0 66.2 83.3 <br />Note: <br />Initial H2O2 pH : 5.56 <br />If NAG value exceeds 25kgH2SO4/tonne then procedure is repeated with 1.0g. <br />Procedure: Miller et al., May 1998. <br />Adrian Brown Consultants, Inc.