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Memo to Wally Erickson 5 August 22, 2011 <br />Wildcat CN -01 Access Road Geotechnical Adequacy Review File No. M -1981 -185 <br />20. In the Retaining Structures section of the Work Plan the Applicant states the fill will be placed <br />in "thin lifts ". Please provide a specification for maximum lift thickness for fill placement or <br />commit to providing this information in the required geotechnical report after completion of <br />the additional investigation (See Question # 6 above). <br />21. In the Retaining Structures section of the Work Plan the Applicant states the fill will be <br />moisture conditioned to near the optimum moisture content. Please provide a moisture <br />conditioning range or commit to providing this information in the required geotechnical <br />report after completion of the additional investigation (See Question # 6 above). <br />22. Please provide additional information and specifications for the proposed Gabion wall <br />retaining structures, including typical drawings, for Division review. Additionally, please <br />include the source of the rock required to construct the structures. <br />23. In the Quality Assurance section of the Work Plan the Applicant states field density tests will <br />be performed in accordance with ASTM 2922 -05. The ASTM standard referenced by the <br />Applicant has been withdrawn and replace by ASTM D6938 -10. Please note the change and <br />revised the work plan. <br />CLC Associates - Wildcat Mining Corporation — Construction Plans <br />24. General Note #3 on the CLC cover sheet states the contractor shall have a copy of the <br />approved geotechnical report for access road design and compaction requirements. Please <br />confirm the Applicant is referring to the geotechnical report based on the additional <br />geotechnical investigation (Question #6 above). <br />25. Please correct the Matchline Station labeling error in the profile section on Sheet C4.12. <br />26. Please define the abbreviations used by CLC Associates (i.e. BVCE, BVCS, VC, PVI, A.D., K,) in <br />the access road construction plans. <br />6.4.5 Exhibit E — Reclamation Plan <br />27. In the Access Easement Closure section the Applicant states the access road reclamation area <br />will have a side slope not exceeding 1.5(H):1(V) with the exception of the cut slope which will <br />remain at a slope of approximately 0.7:1. In the Final Grading section the Applicant states the <br />maximum graded slope will be 1.5:1 unless otherwise noted and evaluated. Please provide a <br />stability analysis evaluation in accordance with Rule 6.5 demonstrating the long term stability <br />of the proposed 0.7:1 slope. <br />28. Regarding Question #27 above, please explain and provide justification for why the cut slope <br />will not be backfilled by the Applicant at the conclusion of the project as part of final <br />reclamation. <br />