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TRANSIT MIX AGGREGATES <br />(a) Description of methods of mining to be employed in each stage of the operation as related <br />to any surface disturbance on affected lands. <br />Mining Methods <br />The Applicant proposes traditional and non - traditional quarrying techniques to complete the <br />Plan. Drilling and blasting, dozer push, and load and haul mining methods will be used to <br />ensure the safety of operations. Also, yarder and slusher operations will be used when <br />traditional quarrying techniques are determined to be less safe, productive, or cost effective. <br />Generally, each phase will begin near the highest elevation of the disturbed area and work <br />downslope. Blasted rock will be placed ahead of and below the existing failed slopes to <br />stabilize them prior to work beginning above. Limestone that can be safely accessed and of <br />saleable quality will be process_ z-d on site and sold. Other rock types and limestone that cannot <br />be accessed or of poor quality will be used as fill for the reclamation slopes Final topography <br />projections for each phase are available in Exhibits F -1 through F -6. <br />(b) Earthmoving Operations <br />The Applicant proposes to use traditional and non - traditional earthmoving operations. <br />Traditional mining methods, such as truck and shovel operations and bulldozing, will be used <br />wherever possible, and the non - traditional mining methods of yarder and slusher operations will <br />likely be required to move material from the upper sections of the quarry and from the landslide <br />areas. Access roads to the top of the Horseshoe Area and Kiewit Cliffs Phases exist for track <br />mounted equipment and !inh+ -duty vehicles Initial grubbing and clearing, along with the <br />removal and stockpiling of topsoil will occur on the newly disturbed areas for the current phase <br />of work. Remote controlled equipment will be employed when deemed necessary by the Safety <br />Officer. Bulldozers will then be used to rip and excavate the weathered granite. Drilling and <br />blasting will begin up high in the quarry and work down to remove the competent granite and <br />limestone following the bench configuration proposed in the geotechnical analysis. Pre - splitting <br />will be used if field conditions warrant, in order to leave more competent walls. Each bench <br />highwall will be 30 feet high and blasted to approximately a 63 degree angle. The benches will <br />be 15 feet wide so that the overall slope is 1 :1(KV). At the start of each phase, bulldozers will <br />push excavated material downhill to a safe loading area for haul trucks , the yarder The haul <br />trucks harder, or slusher will transport the material required to fill Area H and material to be <br />processed and sold. The Area H material will either be end - dumped into Area H or pushed -in <br />with bulldozers. Jnce the phased portion of Area H has been filled, the remaining material will <br />be used to construct the reclamation slope Moisture conditioning and truck and bulldozer traffic <br />are expected to provide sufficient compaction of the fill material, and there will be a compaction <br />specification that all material be compacted by traversing the material at least twice with a haul <br />truck or bulldozer. The fill material used to construct the slope below the fault will be pushed <br />Pikeview Quarry Exhibit D <br />2014 (Revision) <br />Technical Revision — February 28, 2014 D -4 <br />