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MINING PLAN • • EXHIBIT D (coNr.1 <br />overburden, usually zero to six inches on the west side and along <br />the canyon rims on the west and north. As we move east and <br />southward across the site the overburden can reach depths of 15 <br />feet or more. <br />The Dakota sandstone is an interbedded beach sand and mud <br />deposit that covered the area surrounding this site. its stratum <br />is essentially horizontal, but dips approximately 5° from south- <br />east to northwest. The upper layers of the deposit are highly <br />fractured and can vary in size from pieces fist size to as large <br />as a truck. They vary in thickness from a few inches to more <br />than 2 feet thick. <br />The surface stone is still a Dakota sandstone, but where it <br />is exposed it has weathered to some degree, occur in blocky <br />shapes and is generally referred to as field stone. Some occur <br />as large slabs next to the canyon rims and in other isolated <br />spots on the property. <br />SOILS AND OVERBURDEN <br />The SOILS MAP in EXHIBIT I/J shows the soil types as delineated <br />by the National Resource Conservation Service (NRCS) in their <br />report. We have used the information in the Soil Survey of <br />Pueblo County, USDA - SCS publication, June 1979, along with site <br />observations we made during our site investigation to prepare the <br />reclamation plan in this report. This information will provide <br />background for the site as reclamation begins and during bond <br />release proceedings. <br />On the area where slab rock is being mined, the overbur- <br />den/topsoil is salvaged for respreading when mining is done. On <br />the areas where the surface stone is being removed no topsoil is <br />removed since the rock lies on top of the alluvium. Onsite <br />observations suggest that sufficient quantities of soil can be <br />salvaged to reclaim the disturbed lands to their present condi- <br />tion. <br />The soils in this area are not of the highest quality, but <br />when salvaged and replaced should be capable of growing vegeta- <br />tion consistent with what exists now. The topsoil stockpiles <br />will be located around the excavation to reduce the haul dis- <br />tances when reclamation starts. If the soil stockpiles remain <br />undisturbed for more that one growing season a cover crop of <br />Western Wheat grass will be planted on them (rate 3.0 pls/200 <br />sgft). Be assured, we will retain enough growth medium on the <br />site to successfully reclaim and revegetate the disturbed areas. <br />7 <br />