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EXHIBIT D Mining Plan <br /> Mining of the South Pit will continue as the past two decades, with bulldozer,front end loaders, and <br /> possibly excavator utilized to remove soils and gravel materials for front end loader muck and carry to <br /> portable crushing and screening equipment set up on the property at appropriate time intervals to <br /> produce various gravel products, primarily Class V gravel material. Due to low volume requirements <br /> at this site, portable crushing and screening systems will be on the property at large intervals of time, <br /> possible a year or two depending on the local gravel demand. Over the past several years,the pit has <br /> marketed an average of 5000 cubic yards of gravels annually. The mine operator does not see this <br /> demand changing substantially over the next several years. However, an increase in permit acreage is <br /> critical in order to be capable of bidding on local road material contracts as well as addressing the long <br /> term aspects of the gravel resource and its eventual land use. <br /> The site is a grass covered, low sloping dry land meadow over the entire mining area. Scant woody <br /> plant and tree vegetation is found along Froze Creek, 100' north at closest proximity to the north <br /> permit boundary. Approximately six inches of topsoil is removed from the surface with a front end <br /> loader and transported to a topsoil stockpile area located in the south central portion of the <br /> permitted area. Mining will continue in the western third of the proposed expanded acreage (current <br /> work area) until gravel resources are expended, at which time the approximately 10 acre area will be <br /> reclaimed via final grading to no more than 3:1 final slopes, dozer ripping(minimum 18"depth) of the <br /> final graded areas especially the pit floor and truck loading areas, and re-covering the disturbed area <br /> with a minimum of six inches of planting medium (top soil) prior to disking or ripping the surface and <br /> seeding with a dry land grass mixture and mulch application to support seed germination and survival. <br /> Mining will continue from west to east across the permit area in three phases that will be initiated as <br /> volume demand dictates. However, it is estimated that an 8-10 year interval of time will likely occur <br /> between present phase one and initiation of phase two area and a similar time frame for phase <br /> two-phase to phase three transition. Phase boundaries will be clearly marked with t-posts located <br /> along the north and south permit boundary lines. <br /> A 8-10' visibility berm will be constructed along the south boundary of the property set back no less <br /> than 10'from the property boundary along County Road 305. A cross section of the visibility berm is <br /> included as an inset in the Mining Plan Map Exhibit C. The berm will be re-vegetated in a similar <br /> manner as the mining area. The berm will remain after mining. <br /> The gravel resource will be removed to a maximum depth of 15-18'from the present surface <br /> elevation. Final pit floor elevations will vary depending on the gravel thickness removed at that <br /> location but the final floor elevation over the extent of the excavation will not allow for day-lighting or <br /> potential storm derived water accumulation exiting from the final pit area. The porous sand and <br /> gravelly soils underlying the gravel deposit will allow for rapid percolation of any water that might <br /> collect due to storm event or rapid snow melt off. <br /> 4 <br />