2009-07-21_REVISION - C1981010 - Laserfiche WebLink

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1.4 DETERMINATION OF BOND Trapper Mining, Inc. presently maintains a reclamation performance bond for the Trapper Mine payable to the State of Colorado and the United States Office of Surface Mining Reclamation and Enforcement. Upon approval of this permit application, a. performance bond or equivalent, acceptable surety will be secured in an amount equal to the estimated costs for returning the affected area to a satisfactory condition as defined by applicable regulations and this permit application. The equipment productivity estimates used in regrade time calculations were derived from the Caterpillar Performance Handbook, edition 37. Topsoil fleet hours were derived using TALPAC haulage simulation software. DRMS database ownership and operating costs were used where available; otherwise these costs were extracted from the Cost Reference Guide published by Dataquest, Inc. or from vendors. Base labor rates were developed using information from the Colorado Contractors Association. Facilities removal costs were calculated by escalating values from TR-96 (mid term permit review). These TR-96 costs were developed using the RS Means Building Construction Cost Data and data supplied by DRMS. All reclamation. costs were calculated according to the worst-case condition of reclamation requirements. The costs that were calculated in this manner realistically represent those the Division could incur at anytime during the permit period. Table 1.4- 15 summarizes topsoil replacement requirements and open pit lengths at the end of each year of the permit term. The driving factor in determining the worst case year was the extent to which K-pit has been opened. This is a truck/excavator pit. While stripping occurs in this pit form 2009-2012, backfilling doesn't commence unit 2012. During the worst case year of 2012, K pit is at its maximum with regard to amount of pit that is opened. A summary of the estimated reclamation costs is presented in Table 1.4-1. Please refer to subsequent tables and sections in this portion of the permit application as indicated in Table 1.4-1 for more detailed analysis and discussion. The bond amount of $28,494,973 will be applied to our permit renewal. This represents the worst case cost for the period 2008-2012. Trapper estimates that during the worst case year, 2012, the total disturbance within the approved permit area will be 2,079 acres, which includes miscellaneous areas such as light use roads and silo locations. 1-31