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' • <br />Table 14-1 Notes: <br />Permanent Flood Control Dike -Volumes and area taken from TR-02 proposed design. Material borrowed from an sand/gravel bar in <br />the Colorado River. <br />South Lease Exploration -Volumes assumed using 1 ' of topsoil salvaged and replaced on all roads and pads disturbed. Actual <br />volumes unknown. Areas taken from TR-04 and MR-10 design for the project. <br />North Decline -Volumes taken from calculations for contractor payment. Areas were taken from measurements on topo maps. <br />Roadside South Portals -Areas were measured on digital maps. SurvCADD was used to calculate the cut and fill volumes with the <br />use of digital maps of existing and post mining topography. See Exhibit 6C for Post Mining Topography. The volume of refuse <br />required to excavate to create the two IS-foot wide benches is included in the volume calculation. The RSRDA borrow volume <br />includes dirt currently on the pile that wilt be moved to allow instal{ation of benches on the upper part of the pile. The RSRDA cover <br />fill volume represents the 18" overburden cover on [he remaining 9.6 acres of the pile. The RSRDA topsoil volume represents the <br />amount of topsoil to be salvaged and replaced in the borrow area. <br />Overland Conveyor and Railroad Spur - The cu[ and fill volume and area were taken from 1982 reclamation estimates and include <br />grading out the road and track bed as well as filling the holes at the transfers. The topsoil estimate represents the volume of the <br />existing stockpile. This volume will cover a 2400' stretch of the road and railroad 80' wide with 6" of topsoil and 4000' of conveyor <br />40' wide with 6" of topsoil. <br />Unit Train L.oadout -The areas were measured on topo maps. The volumes were calculated using 'average end areas' on cross section <br />on 100' centers. See Exhibit 59 for the cross sections and the approximate cut and fill areas of each. <br />Roadside North Portal -The areas were measured on topo maps. SurvCADD was used to calculate the cut and fill volumes with the <br />use of digital maps of existing and post mining topography. See Exhibit 8C for Pos[ Mining Topography. The topsoil volume was <br />calculated assuming 6" over the measured area. <br />CRDA I and 2 -The 1994 cut volume represents material salvaged from Pond 6 and adjacent to Topsoil pile 6. The 1994 fill volume <br />and topsoil volumes were not accurately measured but were calculated as the minimum volume required assuming 12" of overburden <br />for CRDA 1, 18" of overburden for CRDA 2 and 6" of topsoil. Actual volumes were greater as indicated by the larger volumes of <br />topsoil and borrow material measured during the same project. <br />CRDA I -The remaining fill and topsoil are calculated for the remaining areas to be covered. Areas were measured on a digital map. <br />Actual area to be covered with overburden is IS acres. The pond associated with CRDA No. 1 represents 1.4 acres to be covered with <br />six inches of topsoil. <br />Page 2 of 3 2/01 <br />