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Map Unit 17 and Map Unit 79. (12 inches X 1613.33cyds/acre X 2.0 <br /> units= 54,853.22 cyds of potentially available topsoil.) <br /> • Location of the topsoil stockpiles indicated on the Pre-mine/Mine Plan Map <br /> will protect the topsoil pile from mining operations and is out of <br /> drainageways. <br /> ➢ The location for the topsoil stockpile and its access road are shown on <br /> the Pre-mine Mine Plan Map. <br /> ➢ The entire area for topsoil storage should be adequate as a temporary <br /> storage area. It is free of drainages, is fairly flat. <br /> ➢ Appropriate storm water management control will be implemented <br /> around the topsoil stockpile. <br /> ➢ Given the short duration of the borrow operation,the topsoil stockpile will not <br /> be seeded. The topsoil stockpile will be left rough as placed. Once borrow <br /> material is removed and final grading and discing(as needed)is complete, the <br /> topsoil stockpile will be removed and the topsoil replaced on the final regrade. <br /> ➢ However, in the unlikely event the stockpile is not used for site reclamation <br /> within one year, it will be seeded with the approved reclamation seed mix. The <br /> topsoil stockpile location and its access road will then be reclaimed. <br /> (c) Specify the thickness of overburden or quantity of waste rock,if any, <br /> to be removed to reach the deposit. The location of any overburden <br /> stockpiles or waste rock fill must be shown on Exhibit E—Map: <br /> This mining operation is a borrow pit. Once the adequate topsoil is removed, all <br /> excavated material will be used as borrow material. <br /> (d) Specify the thickness of the deposit to be mined: <br /> Maximum removal depth will be approximately 55 feet. We plan to remove up to <br /> 1,216,440 cubic yards of material. <br /> (e) Describe the major components of the mining operation such as: roads, <br /> access routes, pit, office, shop/maintenance buildings,plant, processing <br /> facilities, and any underground openings such as adits or ventilation facilities. <br /> These components must be located on Exhibit E—Map: <br /> • All major components are shown on Exhibit E—Pre-Mine/Mine Plan Map. <br /> • The operation will consist of an access road allowing borrow material to be <br /> loaded and hauled to the CDOT project construction site. The existing <br /> access road will be modified as needed to permit safe access off the 1-25 <br /> Frontage Road to the borrow area. The access road will be an established <br /> dirt/millings road already in place to access the borrow pit in the middle of <br /> the property site. The access road will be maintained once mining and site <br /> reclamation operations are completed. <br /> • All haul roads interior to the borrow site will be maintained during mining <br /> operations to be safe and to function properly. <br /> • Road maintenance will include maintaining proper drainage, runoff <br /> 26 <br />