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Table D-2 LaSalle Pit Mining Sequence <br />Task Comments Time Required <br />(months) <br /> <br />1 Site preparation: Initial topsoil stripping and <br />installation of processing facilities <br />1.5 <br />2 Mining of Phase 1 93.6 <br />3 Reclaim Phase 1 and construct industrial yard 3.0 <br />4 Mine Phase 2 366.0 <br />5 Reclaim Phase 2 3.0 <br />Total (months) 467.1 <br />Tota I (years) 38.9 <br />The ruining schedule detailed in this table is planned to minimize disturbance by reclaiming <br />areas as additional mining is undertaken, and is based on a reasonable projection of average <br />production rates. The table also shows that mining will occur over approximately 38.8 years. <br />3. Mine Facilities and Operation <br />• <br />Since the post mining land use for the LaSalle Pit is an industrial yard, there will be a number of • <br />industrial maintenance and storage facilities on site. Included among these are back hoes, dozers, <br />loaders, haul trucks, and other equipment used by the Montrose County Road and Bridge <br />Department. Parking and office facilities for Montrose County Road and Bridge employees will <br />also be constructed on site. Upon the completion of Phase 1, the main maintenance and office <br />facilities will be constructed on the pit bottom. <br />Water will be used to control dust on the haul roads and also on the crushing and screening <br />operations. Magnesium chloride may also be used as needed to control dust. Since mining will <br />not take place below the water table, no pit pump will be necessary. <br />In addition to the fuel tanks present on site, a fuel truck may be used to provide fuel for the <br />mobile equipment on site. Once Phase 1 is mined out, the area will be converted to an industrial <br />yard. As such, maintenance of mining equipment will take place in the Phase 1 area, along with <br />all of the fuel storage. A truck scale of 20' x 50' size is also installed in the facilities area. A <br />small.-scale shack will be installed next to the scale. • <br />LaSalle Pit, April 09 D-4