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• Light-Use Roads. In 2004 [here will be approximately 4.0 miles of light-use roads [hat <br />will be reclaimed. As a general rule, these roads are not surfaced. The subgrade will be <br />ripped, and the cut/fills will be graded to cover the surface material. The culverts and <br />embankments will be removed, topsoil respread, and the area cevegeta[ed. Please see <br />appropriate worksheets in Attachment 25-1 for calculations. <br />Haul Roads. There are approximately 9.7 miles of haul road that will need to be <br />reclaimed. The surfacing maternal will be hauled to the pit and buried as part of the <br />final pit grading. See appropriate worksheets in Attachment 25-1 for reclamation costa. <br />Permanent Roads. There are approximately 4.2 miles of permanent haul roads. These roads <br />will be narrowed to 20 foot wide for postmining use (see Tab 13 for detailsl- These roads <br />will take the place of jeep trails chat existed in the area prior to mining and add <br />transportation routes that were not available prior to mining. Refer to appropriate <br />worksheets Attachment 25-1 Eor reclamation activities. <br />PLeet Determination <br />• once the volumes for the various phases of reclamation were determined, the number of <br />shifts, hours per shit[, equipment types, operator/operating efficiencies, support <br />equipment, and overall reclamation time span had co be determined. The following <br />discussion provides the considerations utilized in determining the equipment fleet needed. <br />Production Shifts. One shift per day was used for topsoiling and finish grading. Two <br />shifts per day was used for open pit backf ill ing. Shifts were based on an eight-hour <br />period per shift. A cones rust ive operating efficiency of 83 percent was used to account <br />for decreased productivity due to operator efficiency Eor scrapers. Fifty min/hr was used <br />for dozers due to other factors, Caking darkness into consideration. <br />Equipment Type. The types of equipment selected were based on similar type equipment <br />presently operating at the mine site or could prudently be brought in for a job of this <br />magnitude. Whenever possible, Caterpillar equipment was used for reclamation due [o <br />widely published information regarding costs and performance. All equipment costa were <br />taken from Chose provided by CDMG. Please see appropriate worksheets in Attachment 25-1 <br />• for a list of all cost factors. Equipment performance was based on Cat Handbook No. 30. <br />FPC, Means, or otherwise as noted. <br />6 Revised 11100 <br />