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EXHIBIT D <br />Mining Plan <br />1. Geology <br />The site will mine sand and gravel from a slightly sloped terrace that is located <br />approximately 100 feet above the White River Drainage. The area is comprised primarily <br />of Borolloc Calciorthids, which is on the sides of terraces and Guben Loam, which is on <br />uplands. Slopes mainly face north to northwest. The area is comprised formed in very <br />calcareous alluvial and glacial outwash derived from mixed sources. These sedimentary <br />layers were formed when uplifting Rocky Mountains to the east blocked eastward <br />drainage during Tertiary time and the Uinta Mountains blocked northward drainage and a <br />very large lake formed in northwest Colorado, northeast Utah and southwest Wyoming. <br />This lake is referred to a Lake Uinta and it received all the washout material from river <br />floodplains and deltas from the mountains on all sides of the lake. Some of the later mud <br />which entered the lake became what is now the Green River Shale, which is noted for its <br />oil content. The Green River Shale forms the hills in the vicinity of the permit area. Lake <br />Uinta lasted for 6,500,000 years until further uplifts drained it. <br />2. General Mining Plan <br />The rock material for the entire pit is approximately 40 feet thick. A vast majority of this <br />material is already exposed as the pit is still an operating 112 gravel pit. The area that the <br />pit is expanding into has approximately 6 inches of topsoil, that will be removed and <br />stockpiled to be used during reclamation. The mining operations (crushers, conveyors, <br />dozers and scrapers) will be located in the northwest portion of the respective gravel pit <br />area. Utilizing dozers, scrapers and front end loaders, any additional topsoil from the <br />operations area will be stripped and stockpiled along the eastern boundary of the pit. <br />All topsoil piles will be seeded with a temporary seed mix with a tackifier if they will be <br />left for over 1 year without redisturbance. Weeds will be controlled in all disturbed areas <br />and on the entire site. The overburden is approximately 3 to 12 inches thick. Any <br />overburden that is removed will be stockpiled in a berm along the easterly edge of the pit <br />to help ensure that any outside storm water runoff will be diverted away from the gravel <br />pit. The raw gravel material will then be loaded into a crusher and screening plant and/or <br />washing plant where various sizes of product will be sorted and placed in separate <br />stockpiles. There will be no blasting as part of this operation. Mining will proceed in <br />general from the northwest to the southeast. The overburden, will be replaced in the <br />bottom as the operations moves to the south. All mining and processing operations will <br />be designed to manage storm water runoff, so that no sediments flow to existing drainage. <br />To ensure that water from inside the operation does not leave the site, an existing <br />sediment pond is located below the mining area. Any additional water will be channeled <br />into a small, dry draw along the northwest corner of the pit. <br />It is extremely unlikely that any toxic or acid-producing materials will be encountered <br />during the mining operation since the material is a "clinker rock" in nature. However, in <br />Page 19 of 66