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Wild Horse Dams and Reservoir West Test Quarry DRMS 111 Application <br /> 6.3.4(1)(d) Specify which ponds, streams, roads and buildings, if any, will remain after reclamation. These <br /> features must be shown on the Exhibit E- Map. If ponds are part of the Reclamation Plan, slopes from five (5) <br /> vertical feet above to ten(10)vertical feet below the expected average water level cannot be steeper than 3H.:1 V,. <br /> remaining slope lengths may not be steeper than 2H::1 V. Where wildlife habitat is the proposed future land use, <br /> shorelines should be irregularly shaped to promote a diverse wildlife habitat. Colorado Parks and Wildlife(CPW) <br /> must be consulted where wildlife use is the proposed future land use. <br /> After completion of the Test Quarry development and mining activities, no permanent structures or mining-related <br /> features will remain after reclamation. Disturbed areas will be reclaimed after use; this includes any access roads <br /> constructed for mining operations described in Exhibit C. <br /> 6.3.4(7)(e) Specify the reclamation treatment of any waste rock dumps, underground mine openings, ditches, <br /> sediment control facilities, buildings and other features specified in your mine plan but not previously addressed <br /> in the Reclamation Plan narrative. These features must be shown on Exhibit E—Map. This should describe the <br /> measures taken to minimize disturbance to the hydrologic balance, prevent off-site damage, and provide for a <br /> stable configuration consistent with the proposed future land use. <br /> In development of the Test Quarry, material crushers, screens, and stockpiles will be placed in the Common <br /> Processing Area (which is outside the 111 permit area). Access roads, covered under the 111 permit, will need to <br /> be constructed and improved in order to support the hauled and processed quantities. The mining operation will <br /> not include any underground openings such as adits or ventilation facilities.The processing area will be fenced to <br /> deter trespassers and livestock and provide a minimum level protection of equipment against unauthorized access. <br /> All processing equipment will be located within this footprint.Office trailers,washrooms, testing labs, and parking <br /> lots will also be constructed within the same footprint to administer the operations. Erosion control measures(e.g., <br /> erosion control logs)or berms will be placed around the footprint of the test quarry area to divert drainage around <br /> the test quarry sections. Surface water runoff, if encountered, is expected to originate from rainfall and/or ordinary <br /> construction activities, and will be controlled via the use of ditches, berms, and other similar temporary works in <br /> order to prevent erosion and/or excess pore pressure within the open cuts. <br /> For reclamation, support features including erosion control measures, office facilities, and parking lots will be <br /> removed/redirected and regraded to match the surrounding topography and promote drainage of surface water <br /> runoff off reclaimed quarry areas. Erosion control measures may be used around the reclaimed area to prevent <br /> sediment transport during vegetation regrowth and disturbance of undisturbed areas outside the site. Regrading <br /> of the site will take place to reconfigure the affected site to match the surrounding areas and provide a suitable <br /> environment for wildlife including pronghorn antelope and deer. <br /> 4.2 Reclamation Costs of the Test Quarry <br /> All 110 Limited Impact and 111 Special Operation applications must provide an estimate of the actual costs to <br /> reclaim the site based on what it would cost the State of Colorado using an independent contractor to complete <br /> reclamation. (Such estimates are not required for activities contemplated by the operator and approved by the <br /> Office to be outside the scope of the proposed reclamation plan.) The unit costs should include estimates for <br /> the following activities as appropriate to the operation: backfilling, grading, topsoil application, seeding, <br /> mulching,fertilization, and labor to complete reclamation. Determine and specify the point during the operation <br /> when the site has reached a point of maximum disturbance. The cost to reclaim the site to the specifications of <br /> the Reclamation Plan at this point must be estimated. Unit costs (cost per cubic yard), volumes, haul or push <br /> distances, and grades must be included when backfilling and grading are part of the Reclamation Plan. Volume <br /> and unit costs for finish grading, subsoil and topsoil application must be provided in terms of cost per cubic <br /> yard. The estimated cost for fertilizer, seed and mulch acquisition and application must be provided as cost per <br /> acre. <br /> Tetra Tech May 2024 22 <br />