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DRMS WORST CASE RECLAMATION BOND CALCULATION EXHIBIT L <br />As shown on Map F -1, Reclamation Plan, the site will be restored to high altitude rangeland, and <br />some commercial area around some of the buildings that will remain. The worst case reclamation <br />scenario at the Revenue Mine will take place early in the mine life, when the entire Revenue <br />waste pile is opened up and the 4.53 acres of Atlas pile has also been opened. Also, the additional <br />disturbance in the lower storage area of 0.37 acres will be utilized. It is expected that the worst <br />case reclamation scenario will occur at the end of 2014 when the areas described above are <br />opened, but no topsoil has yet been imported for the reclamation. It is assumed that the <br />underground development for the mill and additional underground storage will be completed at <br />this point. It is at this time in the mine's life that the greatest amount of earthwork needs to be <br />conducted for successful reclamation. The redesigned Mine Water Pond from TR -01 in September <br />of 2013 will remain after reclamation. For the worst case, all three sediment ponds will be <br />backfilled and reclaimed. All collection ditches and diversions will be maintained over the life of <br />the reclamation process but will not be reclaimed. They will be allowed to fill in naturally. <br />The new temporary tailings storage area concrete foundation will eventually be backfilled with <br />tailings in the future and will not require removal. However, for the worst case, an extra amount <br />of backfill has been added to the bond, assuming that the foundation is not yet covered with <br />tailings. <br />Worst case reclamation details are shown below: <br />• Grading all of the disturbed areas steeper than 3H:1V to 3H:1V. The retaining wall near the <br />dry building will be bulldozed and backfilled as part of the reclamation process. All wood <br />and steel will be removed from the site. <br />• Topsoil required is based on the areas shown on Map F -1 multiplied by the respective <br />required thicknesses. For final full reclamation of the mine, all waste /tailings area require <br />Revenue Mine June 2014 L -1 <br />