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MINING PLAN EXHIBIT D <br />There is nothing in the Divisions records showing that a <br />permit was ever applied for on this old mine area. The existing <br />highwall along the north and west sides will be left undisturbed. <br />We plan to leave the highwalls along the northern 155 feet of the <br />east wall; all of the north wall and all of the west wall, out of <br />the mine area. We will not be responsible for reclamation on <br />these highwalls that are outside the permit area. The landowners <br />have indicated that they may be willing to trade material for <br />grading work on this highwall. If that is done, it will be under <br />a separate agreement, and its reclamation will not be part of the <br />reclamation plan described in this application. This would <br />benefit all parties concerned, in that this old disturbance would <br />be reclaimed, and the County material costs would be reduced. <br />The PRE-MINING MAP-EXHIBITC shows the location of the old dis- <br />turbed area as a cross hatched area. We estimate that the <br />disturbed area covers approximately 8.95 acres ±, of which we <br />will re disturb approximately 5.82 acres ± as part of this mine. <br />Field measurements showed that the existing highwall on the north <br />and west sides are approximately 25 feet high and 820 feet long. <br />Our mine perimeter is setback 135 to 155 feet from these high- <br />walls. The deepest part of the old mine area is approximately 20 <br />feet. <br />Access to the site is via an existing graveled road running <br />along the west side of the mine and north of Yuma County Road 28. <br />According to our agreement this road will be maintained for use <br />by the landowners to access their property that surrounds the <br />mine. The road will be maintained as needed. Since it is an <br />existing private road it will remain when reclamation ends and is <br />not included as part of the permit area. It is currently 20 feet <br />wide and the location is shown on the map exhibits supplied with <br />this application. <br />The area to be mined was chosen because we know the quality <br />of the material available and its low wildlife value. There are <br />no trees or shrubs on the site except as noted above. It is a <br />well-managed range site but limited grazing takes place on the <br />area because vegetation is limited by soil types and lack of <br />water. The closest structures to the site are two three-strand <br />wire fences that parallel the west and north sides of the per- <br />mit/affected lands line. They are 210 feet from permit line and <br />235 feet from the digline. <br />The thickness of the mineral deposit varies from zero to 30 <br />feet and averages 25 feet deep. The material being mined is a <br />7