2017-02-24_PERMIT FILE - M2017007 (5)

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MINING PLAN EXHIBIT D(CONT) north. The Plant Site/stockpile area will start on the surface, but once bedrock is reached it will be moved to the floor of the mined area so it is screened below the surrounding areas . Map Exhibit C-1 shows how the site would look when the mine reaches full production. There will be 20 . 0 acres disturbed at any-one-time . Of this 20 acres, the processing/stockpile area will cover approximately 15 . 0 acres, there will be 1 . 65 ac . stripped, and 3 . 35 acres where mining is done and partially reclaimed. The highwall is 1700 feet long with 1200 feet being temporary graded to 2h to 1v. As the mining face extends across the property, we will maintain a 500 foot long, near vertical working face . The remaining highwall be kept at an interim grade of 2h to iv. The plan is to continue to mine into the gravel deposit at the mining face, working south and west until the permit limits are reached. For Option 1 there will be a 25-foot digline setback maintained from the permit boundary so there is adequate space on the level above the slope for property line access, setback maintenance, grading and shaping. The setback from the house and school house will be 200 feet . If option 2 is used then the setbacks on the East, South & West will still be 25 feet, but the Perrino House Area and School House Area will be removed. The mine floor will slope towards the north to preserve the existing flow characteristics of land. Typically mining at Colorado Crushing' s, mining operations are done in cycles . These cycles involve moving a crushing plant into a mine and beginning to process material until there is a six month to 1 year supply of rock stockpiled. Once an adequate supply is processed, the crusher and equipment are moved to another mine . The stockpiles will be used throughout the year by the company. As mining ends on a section of the working face it is temporally graded to 2 : 1 so it is stable when there are no activities in the mine . Any resoiling and revegetation needed is completed when the area where material is removed will not be redisturbed. This cycle continues until the mine is played out . Each time the mine is re-enter mining begins by setting up the plant and stripping the area to be mined during this cycle . The topsoil and overburden will be stockpiled along the mine perimeter setbacks or on the mine floor, i . e . in places where it will not be disturbed until needed. The approximate location of the overburden and topsoil piles are shown on the MINING PLAN MAP. 9