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• • Drainage Control System Installation/Removal <br />• Topsoil Replacement <br />• Borehole Sealing and Facilities Demolition <br />• Revegetation <br />• Misc. Reclamation Tasks <br />• Mobilize/Demobilize Equipment <br />Indirect Costs <br />• Liability Insurance (2:02% of Direct Cost) <br />• Performance Bond (1.05% of Direct Costs) <br />• Job Superintendent (at $37.50/hx) <br />• Profit (10.0% of Direct Costs) <br />Contract Amount (Direct + Indirect Costs} <br />• Engineering Work and Contract/Bid Preparation (4.25% of Contract) <br />• Redamation Management and Administration (3.25% of Contract) <br />• <br />Total Bond Amount (Contract + Engineering + Reclamation Management) <br />RECLAMATION TASKS <br />The following discussions present a general overview of the methodologies used to determine and <br />calculate aworst-case reclamation liability cost. <br />H_gi hwall Reduction and Backfilling and Rough Grading <br />The fast major phase in the reclamation of mined land is backfiliing and grading the open pits. <br />Although this process is discussed in detail in the Backfilling and Grading Plan found in Tab 20, an <br />unplanned cessation of mining will usually cause some deviation from the original plan. Eazly <br />cessation generally affects the estimated postatining topography, postminirtg drainages, and the <br />resulting volumetric calculations. <br />• The first step is the determination of volumes. A range diagram is generally the basis for postmine <br />volume calculations. A pit width of 110 feet was used fox all pit areas. Postmine slopes can then <br />superimposed on the diagrams. For the sake of continuity, it was estimated that all spoil would be <br />PR-02 2 Revised 0]/06 <br />