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Blue Pit 112 Permit Amendment <br />The concrete plant is permitted without an expiration date which means that it will stay at its <br />current location after the mining operation has exhausted all its reserves. Water from the Basin <br />Ditch will continue to be used for dust control. A groundwater well (shown on Map C -i) will also <br />be used. As the mining operation moves to the expansion area the processing equipment (crushing <br />and screening plant) may move with the active mining face to reduce pit haul traffic. The processing <br />equipment will be placed in a location close to the northern slope to prevent nuisances to the home <br />owners to the north of the pit. <br />Irrigation Ditch <br />The Basin Ditch currently (see Map C -i) runs through the proposed expansion area. An agreement <br />has been reached with the ditch company to leave a berm during mining to support the ditch. The <br />berm will have 3H:iV slopes during mining. A cross -over road will be built to provide access across <br />the berm. The berm and road are shown on Map C -213. <br />Topsoil, Overburden and Wash Fines Handling <br />An existing topsoil stockpile is located at the eastern edge of the current disturbance area, as shown <br />on Maps C -i, C -2A and C -213. This pile contains approximately 104,000 cubic yards. This material <br />will be used to reclaim Mining Area 1 once final grade is achieved. Mining Area 1 requires 86,000 <br />cubic yards of topsoil for reclamation based on the restored thickness of 12 inches. The excess will <br />be used in other areas. Additional topsoil stockpiles will be located at the temporary wash plant <br />location as shown on Maps C -2A and C -213. This area will be used to temporarily store the topsoil <br />from the expansion area that cannot be directly placed on backfilled areas, Overburden will <br />continue to be stripped in advance of the mining operation. Its thickness varies from 2 feet to 10 <br />feet but it is expected to average 4 feet over the entire expansion area. Since there is a significantly <br />lesser amount of topsoil and overburden compared to gravel, the stripping will only be needed a <br />couple weeks per year. Topsoil will be stockpiled for the initial period until the mining operation <br />has progressed far enough for reclamation to start. This is expected at the end of Mining Area 2. <br />Once areas are ready for reclamation, the stripped topsoil will be directly placed in these areas. <br />Overburden will always be directly placed because there are areas currently ready for overburden <br />placement and this will continue until the end of mining. <br />Wash fines are generated from the washing operation and will continue to be produced. These fines <br />will be placed on the mining slopes along with the overburden to produce the 3H:1V slopes. The <br />amount of material needed to reclaim the slopes to 3H:1V is shown for each mining area on Map C- <br />2A and Map C -213. <br />Import material will also be used in the reclamation process for backfilling slopes. <br />This quantity and cost is addressed in the DRMS reclamation bond in Exhibit L. <br />Gravel Crushing Equipment <br />• Portable Jaw Crusher <br />• Portable Cone Crusher <br />Blue Pit May 2014 D -6 <br />