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Mr. Kent Gorham, CMLRD June 30, 1992 -page 3 r1 U drainage, passes through a sedimentation pond prior to discharge off of the mine site. The Far East Buvard sediment pond construction should be completed by the end of August 1992. Trapper's operational surface water and ground water monitoring schedules and parameter lists located in our permit application have been revised with the purpose of providing a mare user friendly document to ensure sampling compliance. These tables can be found in permit section 4.8. Additiona0y, the M52 map (Operational Hydrology Monitoring Sites) has been revised to show a0 current and future NPDES sites and all groundwater monitoring wells. Sediment Pond Construction Trapper proposes to construct eight additional sediment ponds during the 1993-1997 permit term. One additional sedimentation pond is proposed for East Pyeatt Gulch, two in Grouse Gulch, two in Sage Gulch, two in Oak Gulch and one in Horse Gulch. The timing of pond construction is specified on permit table 4.8 of our mining and reclamation permit. Precise design information for sedimentation ponds proposed for construction in 1994 and 1995 will be submitted to the Division for approval prior to construction. All sediment pond design and construction will be under the supervision of a Registered Professional Engi- neer. Additiona0y, sediment pond certifications will be provided by Registered Professional Engineer. Bond • It is estimated that the total area of disturbance during worst case permit year 1994 will be 2067.4 acres. The greatest direct costs associated with reclaiming this disturbance is from regrading and topsoil replacement. Other substantial direct costs for reclamation include facilities removal and revegetation efforts. Indirect costs include public liability insurance, contractor performance bond, superintendent salary, CMLRD administrative expenses and contractor profit. Permit table 1.4-1 summarizes the costs that may be incurred by the State in order to ensure all appropriate measures are taken to properly reclaim the disturbed area in the event of mine closure. Based on Trapper's cost calculations, with guidance from the CMLRD Reclamation Cost Summary Form, it is estimated that a reclamation performance bond in the amount of $13.803.391 is necessary. This amount will ensure that all affected areas are reclaimed to a satisfactory condition as defined by applicable regulations and this permit application. Upon approval of this permit renewal (1993-1997), a new performance bond or equivalent surety will be secured for the above stated amount. Macs Trapper has made modifications to several permit maps in order to make them current and/or enhance their usefulness. Updated maps include the fo0owing: M1 "Surface Control," M2 "Sub-Surface Control," M3 "Premine Topography," M4 "Life of Mine Plan," Ml2 "Postmining Topography," M14 "Pre and Post Mining Drainage Profiles," M46 "Mined Areas Reclaimed to Cropland and Future Cropland Replacement Areas," and M52 "Operational Hydrologic Monitoring Sites." Maps requiring significant modifications include the M10 "Mine Plan," and M51 "Drainage and Sediment Control Plan" series. The information from the existing map series M9 "Roads," M10A "Topsoil Removal," M10B "Mine Plan," M10C "Backfilling and Grading," and MIOD "Topsoil Replacement" was incorporated and placed onto a single map series titled M10 "Mine Plan." The Mine Plan map covers the entire permit • area and is presented in two sheets for each of the five years in the permit term. These maps are much more versatile and provide the user with mare pertinent information on a single map.