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EXHIBIT 13C <br />Volume 20 Page 8 Revision Date: 9/18/23 <br /> Revision No.: TR-160 <br /> <br />Collom Facilities Area <br />Tables 13C-7 through 13C-12 present required information to reclaim and/or demolish items <br />associated with the Collom facilities area. Map 22B shows the areas and structures that will be <br />present for the Collom Mine. Table 13C-10 presents the specific facilities that will be <br />constructed under this cumulative bond schedule. <br /> <br />Table 13C-7 Regrade Volumes for the Collom Facilities Area <br />Area Cut (Cubic <br />Yards) <br />Fill (Cubic <br />Yards) <br />Collom Facilities Area 1,484,400 1,467,700 <br /> <br />Table 13C-8 List of Culverts for the Collom Facilities <br />Culvert <br />Number <br />Size (inches) Length (ft) <br />56 36 150 <br />57 36 260 <br />58 36 140 <br />59 36 145 <br />60 36 56 <br />61 36 71 <br />62 36 75 <br />63 36 326 <br />64 36 150 <br />65 36 415 <br />66 36 130 <br />67 36 183 <br />68 2 culverts – 12” 80 <br />D2 Ditch <br />Culvert <br />36 160 <br />71 12 50 <br />72 12 50 <br /> <br />Table 13C-9 Topsoil Volumes for the Collom Facilities Area <br />From To Avg. Haul <br />Distance (ft) Avg. Grade (%) Volume <br />(Cubic Yards) <br />Topsoil <br />Stockpile 25A <br />Collom Facilities <br />Area 6,500 5.0 327,278 <br />Note: Includes the Section 26 Pond, Sidehill Pond and West Side Access Road.