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• CHAPTER 25 BONDING Introduction The purpose of this chapter is to provide a reclamation cost estimate, with supporting documentation, for determination of a reclamation performance bond for lands disturbed at Senece's Seneca II-W Mine. This document will provide information regarding all disturbed lands within the proposed permit boundary. The amount of bond required was developed assuming that the bond would be forteited at a time when reclamation liabilities are highest within the five-year permit term (2001-2005). This condition is most likely to occur at the stage in the mining sequence when the area from which topsoil has been removed is largest and the volume of material to backfill the open pd areas is greatest. This usually occurs when the pit lengths are the longest and the overburden is the thickest. It was determined from the Operations Plan Map (Exhibit 12-2 and 123 submitted in PR-04) that the highest liability, or worst case, woultl occur in the year 2005. This determination was based on pit length, pit location, amount of box cut spoil, and disturbance ahead and behind mining. The Cost Summary Form(s) • are attached at the end of this tab. "Worst Case" Year Disturbance Included in this category are the four spoil piles, open pit, areas ahead of mining that have been stripped of topsoil, ramps, and miscellaneous disturbance areas in and around the open pit. Estimated costs to reclaim the disturbed area come under the headings of: a) Drill and shoot highwall b) Doze highwall material c) Doze adjacent two spoils d) Doze back two spoils e) Grade all ramps (included in spoil grading) t) Topsoil replacement g) Revegetation Reclamation Costs Categories • Seneca's experience in reclaiming mined land has shown, for the purpose of estimating casts, contract reclamation activities can be grouped into the following categories: Direct Costs 1. Backfilling and grading PR04 1 Revised 09/04