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• Relocation of the culvert which passes flows from Ditch E-2 under the haul road to Pond E. <br />• • Construction of a berm along the north and west sides of the clean coal and stoker coal stockpile area to <br />intercept and divert surface runoff to Pond E. <br />Design calculations for construction or modification of the noted drainage structures are included in Exhibit 8. The <br />design for sediment Pond E can be found in Exhibit 8E. Also, Plate l from Exhibit 13 of permit C-81-071 is <br />included within the Pond E exhibit. The design on this plate is followed except where modified by the work <br />prepared by Terra-Matrix. <br />Temuorarv Stockaile of Material Generated durine Prep Plant Start up <br />Twentymile Coal Company (TCC) has completed construction of its preparation plant. During the start-up period <br />of the plant, estimated to last two to three weeks, the quality of the reject material being produced and the percent <br />recovery of coal from the feed coal material may vary from the original design specifications. In order to better <br />understand the functioning of the plant, TCC temporarily stockpiled material generated during this start-up period <br />at a site on the existing low quality coal stockpile. <br />The material that was generated was tested to determine if the plant is producing the quality of washed coal that <br />was projected in the design. Also, a sample of this material was obtained and sent to Twentymile's geotechnical <br />consultant to determine if the physical characteristics of the material produced is consistent with the parameters <br />used in designing the refuse pile. This is one of a series of samples that will be taken during the initial operation of <br />the plant to verify material properties against design parameters. This sampling allows Twentymile to obtain a data <br />set to ensure the material characteristics are consistent with the design parameters. <br />• The material generated during this start up period was stockpiled in the location shown on the attached figure 76, <br />(Prep. Plant Material, Temporary Stockpile Location). Markers for easy recognition identified the material. The <br />start up period ran for approximately two to three weeks. During the initial fvst few days the plant was run for 10 <br />hours per day. Given a feed rate of 200 to 250 tons per hour approximately 700 to 875 tons per day, or 2,100 to <br />2,625 tons for this three day period was generated. After the initial first few days the plant was run 20 hours per <br />day for a two week period. This resulted in an additional 19,600 to 24,500 tons for this period. Therefore, a total <br />of 21,700 tons of material could be produced. The quantity was dependent upon the functioning of the plant. This <br />material was relocated to the permanent refuse pile by June 30, 1995. <br />The Colorado Yampa Coal Company tipplefload out facility has been transferred to TCC, and TCC will be <br />responsible for maintenance, permit compliance and final reclamation. TCC's bond has been adjusted to reflect <br />this responsibility. Design and certification documents for those items transferred from Permit C-81-071 (Ponds B, <br />C, E, G, T, and Haulroads A-B) have been incorporated into TCC's permit. <br />The tipple/loadout facility includes the following: raw coal stockpile, truck dump, crushing facilities (primary & <br />secondary), conveying facilities, sampling facilities, finished product stockpile, stoker belt and dump, stoker <br />product stockpile, conveyor belt and stacker for R-O-M coal stockpile, train loadout, and trackage, and access and <br />temporary storage site for cleaning spilled coal from loadout tunnel. Also, the explosives bunker located to the <br />south of the tipple facility has been transferred to TCC. Each of the components of the facility is discussed below. <br />u <br />APPROVED APR 2 4 2000 <br />Permit Renewal No. 3 2.05-29 12/10/98 <br />