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EXHIBIT D <br /> Mining Plan <br /> Western Mobile Northern, Inc. proposes to mine the River Valley Resource site in Routt County, <br /> Colorado. The City of Steamboat Springs lies a few miles north of the property. The site is to the <br /> north and east of the Yampa River on the east side of State Highway 131 and west of Highway <br /> 40. <br /> Sand and gravel will be the primary product produced from the River Valley Resource site. The <br /> principal intended use for the sand and gravel is for construction aggregates. Permitted mining <br /> operations are located northwest of the proposed site, to the west of State Highway 131. The <br /> dominant non-mining land use surrounding the property is agriculture. <br /> Borehole drilling and testing has verified that the River Valley Resource site contains a <br /> significant commercial deposit of sand and gravel. The depth of the topsoil and overburden <br /> averages approximately 4.0 feet over the entire site. The volume of overburden removed is <br /> expected to total approximately 550,000 cubic yards. The depth of the aggregate material <br /> averages approximately 27 feet. <br /> The permit boundary will encompass approximately 105 acres with 84 acres being mined. The <br /> remaining area will consist of setbacks, access road, and undisturbed wetland areas. Fences <br /> located within the proposed permit boundary may be removed during the mining process. <br /> Mine Phasing <br /> Western Mobile Northern, Inc. anticipates mining and reclaiming the River Valley Resource site <br /> in approximately 13 to 15 years. However, the rate of mining and overall life of the mine is <br /> dependent on several factors including product demand. <br /> Since approximately 84 acres will eventually be mined on the site, mining in phases will limit <br /> the area of disturbance at any one time (see the Pre-Mining/Mining Plan Map, Exhibit C). The <br /> River Valley Resource site will be mined in 13 phases. The following is the approximate acreage <br /> and time for mining each phase: <br /> Area Time for Mining <br /> Mining Phase Acres Years <br /> l 12.93 1.5 <br /> 2 7.45 1 <br /> 3 6.71 1 <br /> 4 6.12 1 <br /> 5 5.87 1 <br /> 6 6.91 l <br /> 7 6.59 1 <br /> 8 5.99 1 <br /> 9 5.60 1 <br /> River Vallee Resource <br /> DA1G 112 Per...a <br /> Page 4 <br />