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Chapter II <br /> Permit approval will be requested as the pile is <br /> reaching the Phase III capacity. <br /> (2) Sutey - Construction, Planning. <br /> Planning for the waste pile concentrated on the geotechnical conditions of the <br /> proposed site, control of surface water runoff and the detailed design of the refuse <br /> pile. <br /> Construction of the pile, which entails placement of the refuse, is done according to <br /> federal/state coal waste pile design specifications, which require: <br /> — Side slopes of the pile should not exceed 1 w2h; <br /> — The grade at the top of the pile shall not exceed 3%; <br /> — Waste shall be spread in approximately horizontal <br /> layers of not more than 24"thickness; <br /> — The waste shall be compacted by the construction <br /> equipment travelling over the surface of the pile; <br /> — Compacted waste shall have a dry density of at least <br /> 90 percent ofthe maximum dry density. <br /> — A bench will be constructed every 50' vertically that <br /> will slope into the pile and have a maximum grade <br /> not more than 10%. <br /> The drainage control plan was prepared by Geo-Hydro and is found in Ex.1I-B-App.5 <br /> A-1 through 11; hydrologic control structures are addressed specifically in Exh. <br /> II-B-5-App.5-3,4,5,9 & 11. Also, sections B, C & D of Attachment 5 to App. II-B-7. <br /> A berm and perimeter ditch, 8 to 10 feet from the toe, runs along the lower end of <br /> the topsoil stockpile. <br /> The access road was constructed by improving an existing, abandoned roadway <br /> from the wash plant to a junction with the existing access road. This improvement <br /> included widening of the road to a 30-foot width, surfacing with gravel, and the <br /> reconstruction of a bridge at the creek crossing. <br /> For sealing the Sutey exploration drill hole, Mid-Continent followed the following <br /> procedure: The casing was cut off three feet below present ground, a spider <br /> placed at 15 feet plus or minus, and the hole filled with concrete. The general area <br /> was be backfilled and graded, to be covered over by the coal refuse fill. <br /> In preparing for Phase II, Mid-Continent retained Golder & Assoc. to review the <br /> sediment pond design for adequacy, and any necessary modifications. <br /> 40 <br />