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adjacent to the stripped area on top of the natural visual berm. The operation will mine for six to <br />nine months per year and produce gravel stockpiles to last the remainder of the year. Overburden <br />will also be stripped from the same area as the topsoil. This overburden will also be stockpiled for <br />later reclamation. Mining of the raw gravel will then start and progress north. Further overburden <br />removed in this process will be used to backfill the eastern cut slope, which will be mined at <br />l .5H:1 V. The eastern slope will be backfilled to an ultimate slope of 3H:1 V for final reclamation. A <br />berm will be left in place on the west side of the pit for visual protection as well as to reduce dust <br />and noise for neighbors west of the Colorado River. This berm will be native material with topsoil <br />windrowed on top of it. Product sales will occur throughout the year. Crushed product will be <br />stored in stockpiles adjacent to the facilities area (see maps in Appendix 3). All slopes will be <br />mined to 1.5H:1 V or less to reduce the amount of reclamation required after mining. All slopes will <br />be reclaimed to a 3H:1 V grade. The mining areas and stockpiles are shown on Map C -2A. <br />2. Topsoil Placement <br />The amount of topsoil proposed to be salvaged and replaced is 74,750 cubic yards. All of the areas <br />will receive topsoil replaced to a thickness of 6 to 12 inches. The compacted areas will be ripped <br />prior to topsoil placement the help root penetration past the topsoil. <br />3. Haul Roads and Access <br />See the maps in Appendix 3 for details of the proposed roads. Access through the site will remain <br />after mining using the access road installed as shown on Map F. <br />4. Reclamation Timetable <br />The timetable for reclamation is shown in Table E-2. Exhibit L: Reclamation Costs describes the <br />worst-case bond scenario. <br />Rincon Materials E-2 Cny; IAS icti and Associatcs, PLIA' <br />February 2020 <br />