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Benson Brothers Red Shale Pit <br />DMG 112 Application <br />Exhibit D -Mining Plan <br />Mined area will be backfilled and graded using overburden and waste rock obtained as the excavation <br />moves up to the ridge and to the south. Overburden is expected to vary from 0 to 2 feet. We estimate <br />that 23,000 yards may be available over the life of the mine. Additional material for resloping can be <br />obtained by lowering the ridge by up to 50 feet as needed. The applicant will aggressively employ <br />concurrent reclamation of depleted areas to maintain approximately 3 acres of disturbance in the <br />process azea and 3 acres of un-reclaimed disturbance in the active mining area in accordance with the <br />Delta County Specific Development Agreement SD OS-001, pazagtaph 9, copy attached in Exhibit M. <br />The southern limits of the mining operation and this permit are defined by a line 50 vertical feet below <br />the crest of the east-west trending ridge and coming no closer to the southern boundary of the Benson <br />Brothers' property than 200 feet. This condition is also described in paragraph 23 of Delta County SD <br />OS-001 and is shown on Exhibit C -Mining Plan Map as the permit boundary on the south. <br />Eventually, the ridge will be lowered up to 50 feet in the azea indicated on the map to obtain the <br />material needed to create a 2:1 h:v final slope in reclaimed azeas. <br />The only hazazdous material on site will be a fuel tank when there is a crusher on site. This will be <br />portable tank located in the process azea. Its exact location will vary somewhat as the crusher is set for <br />maximum efficiency. An earth bean will be constructed azound the tank a minimum of four foot high <br />and lazge enough to contain the entire contents of the tank plus any stormwater as specified in the <br />regulations of the Department of Public Health and Environment. Should any reportable quantity of <br />hazazdous materials, such as fuel, be released on site, all federal, state and local authorities will be <br />notified, including the Division as required by law. The operator anticipates mining 20,000 to 30,000 <br />tons per yeaz. The expected life of the mine is 20 yeazs. <br />The following narrative addresses the itemized requirements of Section 6.4.4 of the Rules <br />a) Material will be mined using dozers, front-end loaders and/or excavators. Mined material will <br />be pushed down slope or loaded on trucks and transported to the process azea and hauled with <br />Front-end loaders to the crusher. There will be no explosives used in this operation. <br />b) Topsoil and overburden will be removed from the deposit using scrapers, dozers, and/or front- <br />end loaders and stockpiled in the process area or on the benches created by the mining <br />operation. High-walls will be reduced using cut and fill technique and dozers and excavators. <br />Topsoil and overburden will be replaced using dozers and scrapers. <br />c) There will be no water diversions or impoundments. A 24" culvert will be installed where the <br />mine access road crosses the dry creek bed. There will be no ground water encountered on the <br />site. <br />d) The process azea will be approximately 3 acres. Backfilling and grading will be performed on <br />depleted mining azeas as soon as practical so that approximately 3 acres of un-reclaimed <br />disturbance (not counting re-vegetation, process area, and road) is present at any one time. We <br />estimate a maximum of 4001ineaz feet of un-reduced high wall present at any one time. The <br />total azea to be mined, based on our estimate of the location of desirable material, is <br />approximately 10 acres. <br />e) The process azea will be established as soon as the permit is issued and will remain in place <br />until all mining is complete. Active mining will occur within a 3 acre area that will begin <br />adjacent to the south side of the process azea and move south up to the ridge as the operation <br />