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• CHAPTER 25 <br />Bormlr)c <br />Introduction <br />The purpose of this chapter is to provide a reclamation cost estimate, with supporting <br />documentation, for determination of a reclamation performance bond for lands disturbed at <br />Eeneca's Yoast Mine. This document will provide information regarding all disturbed lands <br />within the proposed permit boundary. The amount of bond required vas developed assuming <br />that the bond would be forfeited at a time when reclamation liabiLit ies are highest within <br />the five-year permit term (2000-2004). This condition is most likely to occur a[ the <br />stage in the mining sequence when the area from which topsoil has been removed is largest <br />and the volume of material to backf ill the open pit areas is greatest. This usually <br />occurs when the pit lengths are the longest and the overburden is the thickest. <br />It was determined from the Operations Plan Map (Exhibit 12-1) that the highest liability, <br />• or worse case, would occur in the year 2004. This determination was based on pit length, <br />pit location, amount of box cut spoil, and disturbance ahead of mining (see appropriate <br />worksheet in Attachment 25-1). <br />The calculations, costs, and backup documentation for all disturbed lands and Escil ities <br />are generally located in the following attachments: <br />Attachment 25-1 Bond cost Spreadsheets <br />Attachment 25-2 FPC Sheets <br />3009 "Worst Case" Year Disturbance <br />Included in this category are the four spoil piles, open pit, areas ahead of mining that <br />have been stripped of topsoil, ramps, and miscellaneous disturbance areas in and around <br /> [he open pit. Estimated coats to reclaim the disturbed area come under [he headings oE: <br /> a) Drill and shoot highwall <br /> b) Doze highwall material <br /> cl Doze adjacent spoil <br />• dl Doze back three spoils <br />1 Revised 11 /00 <br />