2020-06-16_PERMIT FILE - M2020007 (7)

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EXHIBIT D MINING PLAN(CONT) certification from the State Engineer' s office . In general , mining will commence in the south end of each Phase and work north (except for Phase 1, where mining will start in the north and progress south) . As noted above, the Alpha suffix stages will be mined first in each general area to provide areas for disposal of excess overburden and processing fines generated from the mine . The working face will be mined near vertical to maximize removal of material from the mine . At its widest point, the working face will be approximately 2600 feet long. If mining ends prematurely, this working face slope will be reclaimed using a cut/fill sloping method instead of backfilling. As mining reaches the vertical face setbacks limits around each reservoir, mining in this band from the top of the slope to the vertical face limit will change to a slope mining method to leave the 3 : 1 final slope . We expect to have no more than 2600 linear feet of area needing final exterior sloping at any-one-time . The mining setbacks will vary from the permit boundary and structures as allowed by each agreement for said structures and/or the Geotechnical Stability Analysis . The proposed setbacks are shown in the Setback Table on MAP EXHIBIT C-1 -MINING PLAN MAP. For example, on oil/gas wells, we will maintain a 150 foot radius around each well-head since we plan to leave the natural gravel slope in the reservoirs . The MAP EXHIBIT C-1 - MINING PLAN MAP shows how this will look. The setbacks will be used as a place for access roads to the mine exterior, ditches and oil and gas facilities . The setback areas will be reclaimed if disturbed, but most roads will remain for reservoir access as part of the reclamation plan. The material will be mined using loaders and track hoes (excavators) to remove material from the face . The material will then be delivered to the Plant for processing using haul trucks or a conveyor system. No blasting will take place at this mine . The arrows on MAP EXHIBIT C-1 - MINING PLAN MAP show how we will progress thru the mine area. Reclamation will run concurrent with mining to control the amount of disturbed area in the mine at any- one-time . A reclamation cost estimate is presented in Exhibiti- for start of mining proposed in the following text . This pit will be operated year-around by L.G. Everist, Inc . , weather permitting. There may be periods when the demands for material are slow and no mining will take place, creating an intermittent operations situation. The amount of disturbance to be bonded will allow 180 acres or less at any-one-time . Of this 180 acres, the Plant Site will cover 65 acres, containing processing plant/stockpile area, equipment storage area, temporary overburden and topsoil piles, drying pads and other axillary uses needed at the mine . The remaining 115 acres will contain 30 acres of pre- mining stripped area, the active mining area, reclamation material stockpiles, slurry wall pad area, partially reclaimed area and reclaimed area waiting release . This amount of disturbance may change as the mine develops but prior to exceeding the initial 180 acres, a Technical Revision will be filed to increase the bond and allow for more disturbances . Areas not included in the bonded area will remain in agricultural production and the responsibility for weed control and L.G. Everist, Inc- Ragsdale Reservoirs June 11, 2020 D-8