2019-02-13_REVISION - M2001038 (5)

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MINING PLAN EXHIBIT D (cont) mined areas and stripped areas . The maximum disturbed area at anyone time will be 30 acres ± . No mining will take place within 100 feet of the north bank of Kiowa Creek. Kiowa Creek is an ephemeral drainage that very seldom has water running thru it . There is limited surface material that would qualify as topsoil . As noted in the original text, much of the surface on the exist- ing permit area and newly added south area, has sand on the surface that is not classified as soil . Information for the new north area suggests that there is an average of 5 plus feet of a sandy-clay that is medium stiff to stiff . We will salvage the upper 12 inches of this material for resoiling that area. When the surface layer has some topsoil material it will be stripped and stored for later use in revegetation. As new area is stripped for excavation the soil will be salvaged and stored around the mine perimeter. There have been unusable overburden and/or lenses of clay materials in the sand deposit that will also be stripped and stored for later use in building slopes or backfilling the floor. Both overburden material and unusable clay lenses will be stored along the western portion of the mine for use in grading the final slope from the top to the floor. The salvaged topsoil may also be used on areas ready for recoiling. Mining will take place using scrapers, track hoes, frontend loaders, off road trucks and other equipment . Fuel stored on site is/or will be kept in self contained facilities capable of contain 1100 of the capacity of the liquids stored. The excavated material may be loaded directly into trucks for delivery to the plant or from the working face into the process- ing plant . If raw material is hauled to the plant it will be stockpiled for processing. All slopes will be left in a reason- ably smooth condition and be a minimum of 'Ah to lv and a maximum of 2 horizontal to 1 vertical during mining. Exterior sloping will take place as mining progresses thru the deposit so the final slopes are 2h to lv since they are above water. Since this is a dry pit operation there will be not affect or injury to any water rights . The plan is to stay at lease 2 feet above the ground water table and should mining get into the water table it will be immediately backfilled with at least 2 foot of material . If that happens the floor will be temporally adjusted so it stays at lease 2 feet over the groundwater until the 5