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RECLAMATION COSTS <br />EXHIBIT L <br />The worst case reclamation scenario takes place at the end of Mining Area 5. A detail of the <br />Worst Case Reclamation Scenario is shown in Figure L-1. <br />All of the facilities area will need to be reclaimed at this point which will include the concrete <br />foundation of the truck scale and removing the mobile structures. <br />The reason that the end of Mining Area 5 will be more expensive to reclaim is because the length <br />of highwall that needs to be backfilled is the greatest and reclamation drainage needs to be <br />established. See Figure L-1 <br />The length of slope that needs to be reduced from near vertical to 3H:1V is 1151'. This will be <br />done by hauling overburden from a stockpile and placing it at the base of the slope. The average <br />height of the highwall is 14'. At this height there is 10.8 cubic yards per linear foot of highwall. <br />The resulting volume of highwall backfill is 12,500 C.Y. <br />The amount of overburden that will be needed to backfill Mining Area 5 is 51,000 C.Y. This <br />material will be a short push with a dozer from the stockpiles. The amount of waste fines that <br />will need to be pushed from the stockpile in Mining Area 8 to the pit floor in Mining Area 1 is <br />22,000 C.Y. This is much lower that the amount needed in Mining Area 5 since the wash fines <br />will be piled in Mining Area 8 throughout the mining process and occasionally moved to the <br />final location. Included in the backfill volume shown for Mining Area 5 is the amount of <br />material needed to backfill 820' length of 1.51-1:1V slope to 3H:1 V slope and 4.27' length of near <br />vertical slope to 3H:1 V slope. <br />Installation of the site drainage will include the irrigation ditches as well as the grouted channel <br />discussed in the reclamation plan. A drainage channel will need to be installed in Mining Area 8 <br />at this point to allow the remaining area to be irrigated. This channel will be approximately 20 <br />feet deep with 3H:1 V slopes. The 14,200 cubic yards of material from the drainage area will be <br />moved to the pit floor using a D-8 dozer. <br />Simmons Pit, March 2009 L-1