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EXHIBIT L -RECLAMATION COST <br />The information in this Section is intended to satisfy the requirements outlined in Section 6.4.1 Z <br />of the Colorado Mined Land Reclamation Board's Construction Material Rules and Regulations. <br />We request that the Division calculate the bond using the information provided below. <br />For the purpose of this estimate we assumed the worst case scenario for disturbance. The largest <br />area of mining is Phase 2 (approximately 81.3 acres). We assumed this would be 90% mined. <br />Due to the limited space for stockpile storage at this site, we assumed that the sideslopes for <br />Phase 2 would be 75% reclaimed. When Phase 2 is 90% mined, Phase 1 would be 100% mined <br />and 50% filled with silts (50% reclaimed). Phase 3 would be stripped of overburden and topsoil <br />but 0% mined or reclaimed. The Phase 2A area, currently mined under DMG permit M-1991- <br />140, will be 100% filled with silts when Phase 2 is 90% mined. Due to the direction of mining, <br />the Phase 2A area would be 100% reclaimed with appropriate vegetation when 100% filled. <br />_ Toxeclaim the site-at this point; Phase 1-woulfibe stable at-completioh of wet mining. This area <br />would need to be filled approximately 4 feet, to a depth just below the groundwater elevation. <br />The area of mining would require wetland seed mix, while the remaining area of disturbance <br />would be topsoiled, seeded and mulched. Phase 2 would require 3:1 overburden sideslopes <br />created from existing grade to bottom of reservoir (average approximately 32 feet deep) on 25% <br />of the perimeter. The 10% unmined material would remain in-place. The area above the <br />highwater line will require topsoil, seeding and mulching. Phase 3 would be stripped of <br />overburden and require 3:1 sideslopes to be created from existing grade to the top of gravel <br />(average approximately 5 feet deep). The area of disturbance will require topsoil, seeding and <br />mulching. <br />The processing equipment, scale and scale house are portable and will be removed by the <br />operator. Finished material stockpiles are a commodity and would not require cost for <br />reclamation. The concrete base for the scale and scale house will need to be removed. The <br />settling pond for the current dewatering area filled, topsoil seeded and mulched. The wash pond <br />will need to be filled and reclaimed as part of the processing area. The dewatering trench for <br />Phase 2 would be reclaimed with the sideslopes. The dewatering trench for Phase 3 would <br />require backfilling, seeding and mulching. <br />Approximately 1,000 if of haul road is outside the processing or mining areas that will be <br />scarified, topsoiled, seeded and mulched. The cottonwood trees would need to be planted. The <br />pipes under SH 7 will need to be filled with concrete or similar material. The box culvert <br />conveyor crossing under Tucson Street will need to be filled with concrete or similar material. <br />The relocation of the Brighton Ditch lateral is to be done at the beginning of mining and <br />therefore would not require any cost estimate for reclamation. The Brighton and Brantner Ditch <br />Crossings are temporary and will need to be removed. <br />As outlined in the "Guide to Specification Preparation for Slurry Walls and Clay Liners as a <br />Component of Colorado Mined Land Reclamation Permit", Division of Minerals and Geology, <br />Aggregate Industries - WCR, Inc. Exhibit L - 1 <br />Tuscon South Resource MLRB 112 Permit Application <br />Fi:\}9~q °tq p~,~tLRB\"FucSOn MLRH Application.doc <br />