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EXHIBIT D <br />1. General Mining Plan <br />MINING PLAN <br />Access to the site will be via a private road that connects to the I-70 North Frontage Road (US -6) <br />located south of the property (Map C -2A). Mining will begin in Pit 1, as seen on Map C-213, and <br />then progress to the north (Pit 2) and eventually south (Pit 3). Three mining areas and one facility <br />area make up the totality of the operation. <br />Mining will be conducted on 5-10 acres of ground at a time, with an additional nine acres dedicated <br />to a facilities area. This 5-10 acres of ground will act as a moving disturbance that will pass through <br />each of the three pits over the course of the mine life. Mining will be preceded by stripping and <br />stockpiling topsoil and overburden from approximately 5-10 acres. Mining will generally start at <br />the western edge of each pit and go east creating a natural berm on the western edge of each pit that <br />will act as a visual and noise buffer. Once the eastern edge of each pit is mined to a 1.5H:1 V slope, <br />the area will then be backfilled to a 3H:1 V slope and topsoil will be placed on the area (Map F). <br />The re-topsoiled area is then seeded and mulched and allowed to revegetate. The natural visual <br />berm will remain after the cessation of mining and the completion of reclamation activities. The <br />natural visual berm will be topsoiled and reclaimed to irrigated pasture as shown in the reclamation <br />plan, shown on Map F. <br />The specific sequencing for the operation is as follows and can also be found on Map C-213. In <br />general, as this map shows, mining will proceed through the pits in sequence starting with mining <br />along the west side of each pit before mining the east side of each pit. Pit 3, due to its smaller size, <br />will be mined in a single stage. Topsoil and overburden stripped in advance of mining is either used <br />to built the various berms showed on Map C -2A and C-213 or directly placed for reclamation. <br />Topsoil and overburden may be stockpiled in the active mining pit if necessary due to mining and <br />reclamation sequencing. <br />The mining areas will be reclaimed to rangeland or irrigated pasture as shown in the reclamation <br />plan, shown on Map F. As mining finishes in an area, overburden backfill, topsoil spreading, and <br />revegetation will take place contemporaneously in said area in order to minimize the maximum <br />Rincon Materials D-1 Greg IAwidd and As iato, PLIA <br />February 2020 <br />