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Structure Demolition. This estimate assumes that all structures within the Yoast Mine area would have • <br />to be demolished and materials disposed. It also assumes that no salvage value be attached to any of <br />the structures. Means Site Work and Landscape Cost Data - 1998, was used to estimate these costs. <br />Volume determinations were made from existing maps and/or field measured. The cost per cubic foot <br />includes disposal. Most costs, except where noted, were based on a mixture of construction <br />materials. All material is hauled to an open pit. All information regarding structure volumes and costs <br />can be found in Attachment 25-1. <br />Powerlines. Powerline demolition was based on information published in Means. Powerline lengths <br />were taken from Exhibit 12-1. Total length of line that traverses the permit area is 3.0 miles. Please <br />see the appropriate worksheet for costs in Attachment 25-t. <br />Facility Areas. After the buildings are demolished and disposed, the site is reclaimed. The top one <br />foot of gravel/scoria surfacing on the parking/storage areas will be ripped with a dozer than then <br />picked up and hauled to the pit area where it will be topsoiled and seeded. The entire parking area will <br />be ripped to a depth of three feet. Approximately one foot of topsoil from the topsoil stockpiles will <br />then be hauled by scraper to the ripped parking area. <br />Miscellaneous Utilities. Underground utility reclamation, including phone lines, water lines, and • <br />powerlines, will be abandoned in place. <br />Sediment Ponds. Six sediment pond will be in place by the end of 2004 (Ponds 010, 011, 011a, 012, <br />013, and 0141. Location of the impoundments can be found on Exhibit 12-1. The embankment <br />volume was taken from proposed and typical designs as shown in Chapter 13. The embankment <br />material and sediment accumulated from the ponds would be dozed into the surrounding area to <br />reestablish the drainage. Please refer to worksheet for calculations. <br />Road Reclamation. The three types of roads requiring reclamation within the mine site are haul roads <br />that are to be totally reclaimed, light-use roads that are to be totally reclaimed, and roads that are <br />presently haul roads but will be left for the postmine landowner and must be narrowed. There are <br />approximately 4.7 miles of haul roads that will be totally reclaimed, 4.0 miles of light-use roads that <br />will be totally reclaimed, and 4.2 miles of haul roads that will be downsized for postmine landowner <br />use. <br />• <br />TR-25 5 Revised 09/04 <br />