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mtd floor for the preparation plant will require 845 CY of concrete, the piers and Floor for the thickener will <br />• require 12.6 CY of concrete, the retaining wall for the reclaim tunnel will require 30 CY of concrete, the piers for <br />the reclaim tunnel will require 36 CY of concrete, piers for the vanous bents will require 62.5 CY, and a <br />transformer pad will require 4 CY of concrete. During construction of the reclaim tunnel and retaining wall Ditch <br />D-3 will be relocated to the south. The ditch and culvert sizing does not change as a result of this relocation. <br />All of the above work will be done in a previously disturbed area within [he surface facilities. Approximately 600 <br />CY of fill will be hauled in to the preparation plant site on the north side of [he Overland Conveyor. <br />Approximately 4,000 CY will be hauled in from the borrow area to the reclaim tunnel site on the south side of the <br />Overland Conveyor. The borrow area is located in a disturbed area immediately south of the low yualih• coal <br />stockpile. This material was scheduled to be graded down the hill during final reclamation of the mine. A berm <br />will be constructed on the south end of the proposed coal stoker pad when construction of the preparation plant and <br />bent foundation work is completed. This will direct drainage from [his site [o Pond E. <br />During this period the existing haul road will no longer be accessible and the trucks will have travel through the <br />construction site as long as possible. Once it is no longer possible to utilize the road the trucks will have travel <br />along the existing road [o the south of the Overland Conveyor. This will be a temporary situation until the <br />preparation plant facility is completed. The haul road will be relocated at that time and the relocation will be <br />subject of a technical revision to be submitted in the near future. The amount of stoker produced by the mine is <br />limited and no significant operational or environmental problems are anticipated due to this [emponry need to run <br />a haul truck over dte construction site, and on the road [o the south of [he overland conveyer. Drainage from [his <br />area will continue [o Flaw to Pond E. <br />When the lounda[ions for the preparation plant and associated facilities are no longer needed [hey will be graded <br />over as part of the final reclamation for the mine. The final topography indicates all of the structures will be belo+v <br />• the proposed final contours, therefor, no additional bond is required for the removal of the foundation materials. <br />Railroad Track <br />A twelve-mile railroad spur line connects the Energy Mine No. I with the east-west railroad line of [he Denver and <br />Rio Grande Western Railroad Company (DR&GW). This spur line was originally constructed in 1962 to service <br />the Energy Mine No. I and ended just west of the Tipple No. I. In 1974, [he spur line was lengthened ro service <br />Tipple No. 2. <br />In order to accommodate larger unit trains, CYCC to extended the length of the existing railroad spur. "fhe <br />railroad bed length was extended approximately 300 feet. Of [his length, approximately 70 feet was constructed <br />on a previously disturbed area. The extension will be constructed per the specifications shown on Figure I IA, <br />Existing Railroad Cross Section. The typical cut drawing is presented on Figure I I B. <br />The construction process associated with the extension is as follows: topsoil salvage, inscribe diversion ditch, cut <br />and fill work, placement of railroad bed materials, construction of railroad track. Each will be described in the <br />following paragraphs. An existing road will be used to access the site. Given the short duration of the project, <br />topsoil will no[ he removed from [he existing road. Upon completion of the project the road +aill be bladed as <br />needed. <br />The disturbance associated with this project will result in the stripping of approximately 21 inches of Coutis Fine <br />Sandy Loam fi'om the area. Refer to Map 29, Energy Mine No. I and 2 Soils Map for [he location of this soil in <br />relation [o the railroad track. It is estimated that approximately 2 acres will have topsoil sahaged from the area. <br />• Based upon the 21 inch salvage depth, approximately 5800 CY of topsoil will he stockpile for use in final <br />reclamation of the area. The stockpile will be stabilized by seeding it with the Pastureland seed nnxnu'e. The <br />location of the stockpile is shown on Map 24. <br />MR 97-154 2.06-36 Revised 9/9/97 <br />