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MINING PLAN (coNT) EXHIBIT D <br /> September 2019 <br /> depth of mining to the amount described. On the upland area <br /> the depth of suitable material varies from 3 to 20 feet deep <br /> averaging 10 feet . Below the usable material is a grey shale <br /> like rock not suitable for use as construction material . <br /> (e) The major components of the mining operation are limited to <br /> the access roads into the pit area, the mining roads, the <br /> mining areas and a water reclamation basin where water used for <br /> washing is returned to the ground water table . With this sur- <br /> face operation there will be no underground openings such as <br /> adits or ventilation facilities . Mining equipment may include <br /> but is not limited to, front-end loaders, scrapers , bulldozers, <br /> and dump trucks . Processing equipment may include but is not <br /> limited to conveyors, crushers and screen plants . <br /> (f) The dimensions of any significant disturbances to the land <br /> surface will be limited to pit excavations and the plant growth <br /> media stockpiled on the north and south pit . There will be no <br /> mine benches, impoundments, stockpiles, or waste rock disposal <br /> areas . The current bond allows for a maximum of 25 . 0 acres to <br /> be reclaimed at any-one-time . Currently, there is 12 .4± acres <br /> disturbed in the new permit area and 17 . 94 acres that have been <br /> mined and graded in the channel waiting for the next flood to <br /> refill . This area includes the disturbed area in the 111 <br /> permit area . This maximum disturbance plan is adequate to <br /> cover all of the lands currently disturbed in the existing <br /> permits . <br /> (g) There are two existing access roads to the mine . The <br /> eastern access is a old shared property access road as evi- <br /> denced by correspondence in the files revealing its existence <br /> since approximately 1950 . The southern road is a private drive <br /> that serves the surrounding property owned by the Vezzani' s . <br /> It provides access to the mine and the Concrete Batching Opera- <br /> tion as well as their land surrounding the permit area. No <br /> improvements will be made to these roads so they have not been <br /> included as part of the permitted acreage in the past . There <br /> will be no associated drainage or runoff conveyance structures . <br /> (h) The Walsenburg Sand and Gravel Co. has a well permit on the <br /> property that provides the minor amount of water needed for the <br /> 9 (REVISED 3/6/2020) <br />