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-55- <br />Briefly, the plan consists of three phases. Phase I consists of a waste pile <br />to be constructed on the "West Ridge" site, immediately adjoining the <br />southwestern toe of the lowest existing fill bench at the Orchard Valley Mine <br />surface facilities. This terraced pile is proposed to accommodate 130,000 <br />cubic yards of waste and fulfill the mine's waste disposal requirements for a <br />period of 8.8 years. Phase II consists of an analogous, but smaller, waste <br />pile to be constructed on the "East Ridge" site, immediately east of the Phase <br />I pile. Phase II will contain 60,500 cubic yards of waste and require <br />approximately 4 years to construct. Phases I and II are separated by a <br />natural ephemeral drainage channel. Phase III of the proposed waste pile plan <br />consists of a plan to fill the drainage separating East and West Ridges, as <br />well as the imposition of additional 530,000 cubic yards of material on top of <br />the original Phase I and II waste piles. This is projected to occur over a <br />life span of 36 additional years. The total life of the three phases will be <br />48 years and encompass the disposal of 720,500 cubic yards of processed waste. <br />The Division has approved Phase I off the proposed waste structure. Phase I <br />contains sufficient waste disposal area to accommodate the mines waste <br />production during the next 5 to 8 years. However, Phases II 8 III of the <br />proposed structure will have to be approved prior to approval of future permit <br />periods or CWI will be forced to dispose of waste underground in accordance <br />with MSHA requirements. The Division deems it appropriate to inform the <br />company that there are several specific aspects of the conceptual plans for <br />Phases II and III which may require significant effort to resolve. The <br />applicant proposes a subdrain to accommodate the surface flow of the ephemeral <br />channel separating the East and West Ridges. This subdrain will require <br />considerable geotechnical and hydrogeological justification and specific final <br />engineered design. In addition, stability analyses for Phases II and III will <br />be required prior to approval of either of these facilities in later permit <br />terms. <br />CWI understands that mining can proceed only as long as a waste disposal site <br />with capacity is available and permitted by the Division. <br />The operation is in compliance with this section. <br />XIX. BONDING (2.05.4(2)(b)) <br />The estimated cost for reclaiming the entire Orchard Palley Mine site by <br />independent contractors has been calculated by the Division. This cost <br />estimate includes such items as building removal, sealing of portals and <br />underground openings, backfilling and grading, topsoil placement, drainage <br />control, and revegetation. The cost for reclaiming the Orchard Valley mine <br />operation has been calculated to be E2,055,000.00. In October, 1986 the <br />pipeline from Steven's Gulch to East Roatcap Creek will require a bond of <br />E36,000.00. The technical revision requiring this amount will become final <br />October 12, 1986. To date (October 3, 1986) this bond has not been <br />submitted. The western portal facility is calculted to require a bond of <br />E1,025,000.00. Thus the total bond for this facility is calculated to be <br />E3,116,000.00. , <br />