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CmcCONTINENTAL MATERIALS CORPORATION <br /> (f) Description and Thickness of Overburden, Deposit, and Underlying Stratum <br /> Topsoil will be stockpiled for use in reclamation. The location of the topsoil stockpiles will be <br /> within the permit area, and out of the way of mine traffic, stream channels or drainage ways. <br /> Current native topsoil stockpile locations are shown on Exhibit C-1. Imported topsoil piles will be <br /> maintained near the plant area and hauled to sloped benches which are ready for topsoil. <br /> Stockpiles will be stabilized with vegetative cover or other means to protect from erosion. <br /> The upper slopes that will be graded in this Plan have up to 30 feet of highly weathered Pikes <br /> Peak granite that is considered overburden and will be removed by ripping with a bulldozer. <br /> Granite that is deeper and less weathered will be removed with drilling and blasting operations to <br /> achieve the desired long-term stable slope. <br /> The primary deposit that has been mined in the past for sale at Pikeview Quarry is the Manitou <br /> Limestone. The basal member of the Manitou Limestone is the Peerless dolomite, which has also <br /> been mined, when present. <br /> The underlying stratum is the 70-foot thick Sawatch sandstone. The sandstone is glauconitic <br /> near the top, and arkosic near the base. The failure of a weak, thin laterally extensive clay layer <br /> near the top of this formation has been attributed to the December 2, 2008 landslide. The <br /> geotechnical assessment included in Exhibit 6.5 demonstrates the slope stability of the reclaimed <br /> slope. <br /> (g) Primary and Secondary Commodities <br /> Any limestone, granite, or dolomite produced from the site may be processed and sold; however, <br /> there is expected to be very limited production of any products. <br /> (h) Incidental products <br /> No incidental products are expected to be produced; however, a demand for incidental products <br /> (surplus non-commodity) products will be determined as reclamation proceeds. Metal may be <br /> recycled and sold as scrap metal. <br /> (i) Explosives use and proof of surrounding stability <br /> Explosives will be required to reclaim Pikeview Quarry. There are no modifications to the <br /> explosives storage or the blasting plan. During reclamation activities, the explosives contractor <br /> may decide to modify the plan. The plan will be available to review in the quarry offices during <br /> active operations. The plan will ensure that off-site areas will not be adversely affected by blasting <br /> per Rule 6.5(4) of the Construction Materials Rules and Regulations. <br /> Pikeview Quarry Amendment 4 <br /> D-7 <br />