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EXHIBIT L RECLAMATION COSTS <br /> Mining at the Siskin Pit will disturb a total of 77.5 acres across a permit area of 85.7 acres. Given <br /> the length of time it will take to mine this entire site, the Operator will phase the mining plan and <br /> requests the bond be calculated to reflect the greatest incremental default liability. This worst- <br /> case scenario is presently based on mining and reclamation for the extent of phase l as shown on <br /> Map C-3. <br /> Prior to beginning to mine and open future phases, bonding may be reevaluated by the Operator <br /> or Division if future phases will increase the incremental liability. <br /> At the end of phase 1, and if the site were to permanently close, the final bench along the north <br /> facing slope will need to be backfilled and seeded. Therefore, a 20-foot-high bench up to 300 <br /> feet in length (not the entire length) will require backfill to a 2.0H:I.0V slope with overburden <br /> and/or waste fines and then capped with topsoil before dry rangeland seed is spread. Prior to <br /> topsoiling, the graded overburden will be ripped with a stormwater catch dip along the base of <br /> the slope. The area is estimated to be 40 feet 2.0H:1.0V slope by 300 feet or 0.3 acres. The phase <br /> 1 5.6-acre processing area will be topped with 8 inches of topsoil and seeded with a dry <br /> • rangeland seed mix. <br /> Therefore, bond calculations are based on a projected total maximum of 5.9 acres of disturbed <br /> land at the completion of phase 1, as shown on Map C-3. It should be noted, that total <br /> disturbance at the completion of phase 1 will be 12.9 acres; however,this scenario accounts for <br /> the end extent of the phase with the majority of slope reclamation already in process or <br /> completed. <br /> The following reclamation tasks will be required. <br /> • Mobilization of equipment<45 miles= $20.000.00. <br /> • Active highwall knockdown: 300 feet of roughly I.0H:0.5V slope bulldozed <br /> down/backfilled along the 40-foot-wide bench to 2.01-1:1.0V at a final height of 20 feet; <br /> include catch ditch ripping. Roughly 4,445.00 CY of dozer work at$2.00/CY= <br /> $8,890.00. <br /> • Topsoil surfacing= 5.9 acres at 8 inches deep= 6,346.00 CY at$1.50/CY =$9,519.00. <br /> Siskin Pit <br /> January 2024 L-1 U Lcwicki& Associates <br />