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Technical Revision 23, Mining Permit M-1977-300 Mr. Robert Noren <br /> Disposal of Alluvial Fill Cotter Corporation(N.S.L.) <br /> LIST OF TABLES <br /> Table 4-1 Cost Estimate for Placement of Alluvial Fill on WRPs <br /> Table 4-2 Disposal Alternative Comparison Between Placement in WRPs and Placement in <br /> the CV Glory Hole <br /> Table 4-3 Disposal Alternative Comparison Between Placement in the WRPs and Offsite <br /> Disposal <br /> Table 4-4 Disposal Alternative Comparison Between Placement in the CV Glory Hole and <br /> Offsite Disposal <br /> LIST OF FIGURES <br /> Figure 3-1 Existing Waste Rock Piles with Proposed Additional Material <br /> Figure 3-2 Existing Waste Rock Piles Cross-Sections with Proposed Additional Material <br /> Figure 3-3 Areas of the Alluvial Fill Expected to Require Remedial Excavations and <br /> Removal of Solid Source Term Materials <br /> Figure 3-4 Modeled Depth Contours Depicting the Subsurface Spatial Distribution of Solid <br /> Source Term Materials to be Removed <br /> LIST OF ATTACHMENTS <br /> Attachment A -References <br /> Attachment B—Appendix E-3 from the 1983 Mine Permit Amendment: Schwartzwalder Mine <br /> Waste Rock Pile Stability <br /> Attachment C—Appendix E-4 from the 1983 Mine Permit Amendment: Responses to State of <br /> Colorado Mine Land Reclamation Division, Portions of the Permit Amendment <br /> Application <br /> Attachment D - Letters from Cotter to Colorado Mined Land Reclamation Division addressing <br /> Questions Regarding the Expansion of the Waste Rock Piles <br /> f`. <br /> December 28, 2015 ii Engineering Analytics, Inc. <br />