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• A topsoil replacement area for roadways was calculated from roadway lengths as shown on Map M9 and <br />roadway disturbance widths. <br />For each of the topsoil replacement areas, a typical spread point location was established from which <br />average haul distances and grades were determined based on their locations and the permanent stock- <br />pile locations. Table 1.4-9 summarizes the resuRs of each haul route. TALPAC software was used to <br />calculate production rates. The total bank cubic yards of topsoil required to replace all disturbance <br />during worst case bond year 2004 is 4,320,767. This quantity reflects a laydown depth of 14 inches <br />allowing for 2 inches (14.3%) of settlement to acieve the 12 inches required. Output from TALPAC is <br />inGuded in Appendix A. <br />Map M6, Bond Worst Case Year, 2004 shows the disturbed area, topsoil pile locations, the location of <br />final cuts and rograde cross-section locatioru. <br />1.4.3 Facilities Removal <br />The estimate for the cost of facilities removal is presented in Table A-1 of Appendix A. This estimate <br />was generated by applying unit costs for demolition work, as referenced in Means Building <br />ConsVuction Cosl Dafa 2002, to the building or facility size. The major demolition costs are associated <br />with the buildings. These estimates are broken out to reflect stmcture demolition, concrete removal both <br />• for flatwork and footings, and material disposal. <br />The costs for miscellaneous items were generated by applying an approprtaie Means unit cost or some- <br />times by simply assigning an estimated unit cost. The operation of the industrial waste pond is described <br />in Section 4.3.2.2 and is not expected to require more than a minimal effort at the time of reclamation. <br />1.4.4 Reveaetation <br />All areas where topsoil had been placed back over disturbed ground would require the establishment of <br />permanent vegetation in order to prevent erosion and make the land productive as either cropland or <br />rangeland (refer to Section 3.6). Table 1.4-10 summarizes the calculation of a total revegetation cost for <br />each post-mining land use by areas as based upon total estimated costs per acre and the number of <br />affected acres. <br />The costs per acre are detailed in Tables 1.4-11, 12, 13 and 14 according to equipment production costs, <br />material costs and estimated operating rates for each land use. The equipment costs were based on <br />equipment types similar to the equipment presently being utilized at Trapper Mine for reclamation work. <br />1.4.5 Miscellaneous Costs <br />• Various miscellaneous costs are addressed in Appendix A. A summary of these costs is shown in Table <br />1.4-i6. <br />1-53 <br />