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DRMS INTERNAL MEMORANDUM <br />Date: 03 November 2009 <br />To: Jason D. Musick <br />From: Marcia L. Talvitie, P.E. <br />Subject: Trapper Mine - Permit No. C-1981-010 <br />Review of September 2009 Geotechnical Monitoring Report <br />At your request, I have reviewed the Semi-annual Geotechnical Monitoring Report prepared by <br />Trapper Mining Inc. and received by the Division on 02 October 2009. <br />The frequency of monitoring the various inclinometers, piezometers and benchmarks appears to <br />have been sufficient for the months of October 2008 through March 2009. In general, I concur <br />with the analysis presented. <br />Data for one benchmark, collected on 9/8/09, appears to be anomalous when compared with <br />prior readings at that location. The site in question is 07-GI6 BM, and a displacement of 6.282' <br />is reported for cumulative vertical and 3D displacements. Please request that TMI review the <br />data; verify whether it is accurate; and if it is accurate, provide the Division with additional <br />analysis and explanation of the changes observed and any issues this apparent movement may <br />portend. <br />Please feel free to contact me with any questions you may have regarding the adequacy of this <br />report.