2002-11-05_REVISION - M1983176 - Laserfiche WebLink

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ASPHALT SPECIALTIES CO. General mining methods in the amendment azea have been discussed previously. Detailed descriptions of mining procedures, locations and phases were submitted with the first amendment application for this permit in September 2000 and will not be reiterated here, for the sake of redundancy. All Mining Areas and Mining Phases aze shown on Exhibit C-2, Mining Plan Map and aze shown in relation to each other in the Table in this Exhibit. Mining and concurrent reclamation will simply proceed from Area 1 into the amendment area, Area 3, after Area 2 is mined. The amendment request contained herein is simply for an additional area to be mined and reclaimed by the same methods as those described and approved in the first permit amendment for the Speer Mining Resource. As with the first amendment approval for this permit, mining in the amended azea will continue to excavate into an area 50 ft. east of the high-water bank established by UD&FCD with concurrent backfill to "reclaim" the 50 ft. lost by mining and to return this area to neaz pre-mine conditions. This mining and backfill will occur in the low-flow season of the South Platte River. Riverside and pitside improvements, in the form of riprap, will be installed. This procedure has been approved with UD&FCD and is currently being implemented on the currently approved CDMG permit area through an Adams County Floodplain Permit. An amendment to the Floodplain Permit with Adams County incorporating these same procedures with the concurrence of UD&FCD, will be approved for the amendment area. Detailed cross-sections showing these constructed features are located on both Exhibit C-2, the amended Mine Plan Map and Exhibit F, the amended Reclamation Plan Map. ~f) Description of Overburden (toasoill, Deposit and Underlyin@ Stratum Based on the exploratory boreholes, the topsoil-overburden ranges from one to five feet, averaging 3.5 feet in depth on the amendment area. Based on the number of vegetable and other agricultural crops grown in surrounding areas, the topsoil is anticipated to be very fertile for reclamation efforts. The alluvial deposit to be mined varies in thickness from twenty to twenty-five feet in depth, averaging 22.5 feet on the amendment azea. It vanes from fine sand and gravels in the upper zones, to coazse sand and lazger cobbles neaz bedrock. The deposit on the amendment area is identical to the deposit being currently mined on the active permit area and is ideal for the manufacture of high-quality concrete and other construction materials. The underlying bedrock on the property is the Denver / Arapahoe shale. Speer Mining Resource 12 October 7, 2002 Asphalt Specialtics Company, Inc. DMG Permit Amendment No. 2