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EXHIBIT L <br /> Reclamation Cost <br /> Slurry walls have been constructed around Phases 1 and 2, and have been tested to ensure <br /> they meet the performance standard in the "State Engineer Guidelines for Lining Criteria for <br /> Gravel Pits". See the attached approval letters from the State of Colorado Division of Water <br /> Resources. Phase 3 will be the next area where a slurry wall will be constructed, then Phase 4, <br /> Phase 5, and Phase 6. Phases 7-9 will be mined after Phase 6 but the order in which these <br /> phases are mined is not determined at this time. <br /> The financial warranty required for each phase of mining includes cost components for the <br /> areas of scarification of ground, topsoil placement, and revegetation required for that phase. <br /> Direct costs related to the construction of the reclamation components that have been included <br /> in the financial warranty calculations include: Backfill placement, scarifying disturbed ground <br /> surfaces, re-applying topsoil over disturbed areas, revegetating disturbed areas, slurry wall <br /> construction, and contractor mobilization. The slurry wall costs are based on the average depth <br /> of the wall to calculate the per lineal foot cost. <br /> Overhead, profit, and project management costs were then calculated and added to the direct <br /> construction costs to arrive at the required financial warranty for each phase. <br /> The financial warranty for all north mining phases and all disturbed areas has been calculated <br /> for the maximum anticipated disturbed area for the mine. <br /> Please see the attached calculations for details of the costs and quantities used to determine <br /> the financial warranty required for the mine. <br /> The following table summarizes the financial warranty required for each phase, and the <br /> cumulative financial warranty that will be provided during any given phase. <br /> Prowers Aggregate Operators, LLC <br /> JaT Consulting,[nc. West Farm Pit—M-2008-078 <br /> �, <br /> DRMS 112 Permit Amendment Application <br />