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MINING PLAN EXHIBIT D(CONT) <br /> beds and done some armoring to protect the fields and building <br /> from past flooding. The Floodplain line is shown on the map. <br /> This line is located from the Pikes Peak Regional Floodplain Map. <br /> Run off down these dry creek beds will not be impaired by mining <br /> or reclamation. <br /> The site is currently used as irrigated agriculture and <br /> rangeland and consists of a deep sand deposit that parallels both <br /> side of Black Squirrel Creek. The usable material on this site <br /> is greater then 70 feet deep as evidenced by the well drilling <br /> logs reviewed. The salvageable soil depths vary from 4 to 15 <br /> inches but many of the 8 soils types have 8 inches or less so the <br /> average works out to be 5 . 5 inches . However, Most of Stage VI is <br /> area covered by irrigation sprinklers is used for sod farming so <br /> little or no actual soil remains on those . The mine floor will <br /> be sand since the deposit averages 100 plus feet deep. <br /> MINING PLAN <br /> Of the 733 . 7 acres ± in the permit area a maximum of 561 . 7 <br /> acres ± will be disturbed by the mining operation over the life <br /> of the mine . The area is broken into 6 mining stages for sake of <br /> discussion. When a stage is opened the 25 foot mining setbacks <br /> will be delineated along the permit/affected lands line and 150 <br /> feet from the top of the bank along Black Squirrel Creek. If <br /> mining will take place near a structure not covered bu a <br /> Structure agreement a 200 foot setback will be established from <br /> the closest structure where on agreement is in place . This <br /> setback is Shown on the Mining Plan and Reclamation Plan maps . <br /> When a Geotechnical Stability Analysis is approved mining will <br /> return to a setback distance consistent with the factors of <br /> safety determined bu that analysis . <br /> Mining will begin in Stage I west of Black Squirrel Creek <br /> and north of Sanborn Road. A 30 acre area will be stripped within <br /> the setbacks explained above that will be used as the active <br /> mining area, plant site and stockpile area. Mining will move <br /> south to north in this stage once a working face that trends <br /> east-west across the stage . We expect to mine approximately 35 <br /> feet deep in the stripped area creating the first level . Once <br /> enough area is open a second 35 foot deep cut will be made to <br /> reach the final floor of the mine. This will create two 35 foot <br /> 5(revised 10.31/19) <br />