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' EXHIBIT D- MINING PLAN <br />' Three grading plans, Phase I, 11 and III are provided in this section as Figures 1,2 and 3 respectively. <br />Features of the grading plans include preservation of hillsides to the north, knolls to the east and <br />ridges [o the south and west. Material will be mined from a central bowl with untouched areas <br />' screening the outside perimeter. A ridge and hillside to the north will remain undisturbed forming a <br />visual barrier. A north facing ridge on the south side, above the access road will also be preserved. <br />This will create backdrop for views over the ridges from the north A knoll will be preserved at the <br />east end of the site to screen views from the east Draitrage basins will remain approximately the <br />same size, although slopes will change. An erosion control plan will control downstream sediment <br />The phased grading plans are adapted to the site to minimize visual impacts from surtounding areas. <br />Existing, vegetated hillsides will be preserved to screen the site. Phasing of mined areas will minimize <br />visibility at each stage of the project Views of the site are further limited by the distances from the <br />site. Due to the separation from adjacent development and the dominance of the Rampart Range, the <br />site affects only a fraction of the field of vision. <br /> The first phase will remove materials from the southwest comer of the site. Figure 1, Exhibit D <br />depicts the initial mining segment, Phase I, in its final or reclaimed grade. Note that the undisturbed <br /> areas, north, south and east of the proposed site will progressively screen the excavation work and <br />' equipment. When the mining segment has reached its final grade, reclamation work will begin on the <br />southern slopes while mining operations commence on Phase II, the next segment m the north. This <br /> procedure will limit the actual disturbed surface area at any time while effecting reclamation work <br /> during the early stages of the excavation period. Preservation of visible areas will minhnize visual <br />' impacts in the early phases. The dominant exposed south face of Phase I will be reclaimed before it <br /> becomes visible from the north. <br /> The mining segments each range in size from 5.6 acres (Phase I), 3.3 acres (Phase in to 2.3 acres <br /> (Phase III) fora [oral mined area of 11.2 acres which is adequately contained within the pertni[[ed 14.6 <br /> acre site. This will limit the amount of disturbance during the mining process but will be of sufficient <br /> size to allow the movement of mining equipment. This size limitation does not include the access <br /> road which will service the upper pit operation After a mining phase is completed, mining will <br /> commence in the next adjacent phase. Reclamation of the mined area will wmmence as soon as <br /> equipment and materials are removed. This will allow sequential reclamation to became established <br /> during the actual mine life. This report notes that portions of Phase I and Phase II mining areas <br /> overlap due to terrain and the ability of the mwng equipment to operate effectively. Therefore only <br /> the southerly portions of Phase I may be reclaimed as Phase II is begun. <br />' <br />~ <br />~~{, In most areas, excavation will not exceed 25 or 30 feet. In areas where mining excavation exceeds <br />' ~`su"'" 10 feet, mining will occur in lifts, and the hifh wall will be bench_~r sloped as IIecess~to -- <br />~,;J maintain a~eotechnically stable confi_1;ura_ demon. Mining for Phase I will proceed northward toward the <br />~W central pottion of the pit boundary, transitioning to Phase II which proceeds easterly, removing the <br />' fl <br />~ west end of the existing ridges or fingers while maintaining final pit floor elevation. Phase III will <br />consist of the removal of the east ends of the ridges to achieve final grading wnfiguration. Emphasis <br /> is placed on the north and eastward mining directions in Phase I and II, enabling the operator to reach <br />' pit depth and utilize the existing terrain features to minimize visual impacts. The ends of the two <br />eastwari ridges or fingers will remain in place as natural knolls or knobs, resulting in amore natural <br /> foreground for a westward view angle. <br /> <br />' 0-1 <br />