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• o~ill require the placement of conveyor belt, or similar ditch lining in the bottom of the ditch to minimize <br />chnnnelerosion. <br />During 1992 approximately 200,000 tons of low quality coal will he produced and placed in the stockpile. <br />Likewise, during 1993 and 1994 350,000 tons of low quality coal will be produced and stockpiled. <br />Thereafter, it is anticipated that 600,000 tons per year of low quality coal will be produced and processed. <br />It is planned to place the low quality coal produced during the first half of 1994 into the low quality coal <br />stockpile. The low quality coal produced during the 2nd half of 1994 and subsequent years will be placed <br />directly into [he permanent pile and start removing the low quality coal from the existing stockpile at an <br />annual rate of 100,000 yards per year until all the low quality coal is removed from the pile. Production <br />records, which will be truck or scraper load counts, will be utilized to provide an estimate of the amount of <br />low quality coal transported to [he permanent disposal site. I[ is planned to transport this material during <br />the more favorable weather periods of late spring. summer or early fall. <br />A total of 550,000 tons of low quality coal would have to be transported [o the permanent disposal sitc. <br />[3ased upon the amount [o be transported and the annual amount to be transported i[ will take 5.5 years to <br />complete the process. <br />The construction of the preparation plant during 1994 and 1995 will eliminate the need to haul the low quality <br />coal, discussed in the above paragraph, to the permanent refuse pile. The plant will have the capability ro <br />produce 500,000 tons per year during its normal operating period of April through September, although <br />additional clean coal could be produced if needed. It is anticipated the clean coal production will be <br />approximately 300,000 to 400,00 tons per year. In order to produce this amowtt of clean coal approximately <br />• 480,000 to 640,000 tons of low quality coal will be processed through the plant. With the intended rates it <br />will take approximately three years or less to process the low quality coal through the preparation plant. <br />Approximately 180,000 to 240,000 tons per year of refuse would be generated and hauled to the approved <br />refuse pile. <br />In order to finalize the design for the permanent waste rock disposal site field studies will have to be <br />undertaken and completed during the second quarter of 1992. It is anticipated that the field studies will be <br />conducted during late May and will include a site reconnaissance, test borings and excavation of test pits. <br />The location of the proposed drill holes and test pits are shown on Map 23A. <br />The borings will be approximately 80 fee[ deep, dependent upon spoil depth in the area. I[ is anticipated <br />that the borings will be made by an auger, or if this is not possible a rotary rig +vill be utilized. It may be <br />necessary to construct a pad for the auger or drill rig, and if so i[ will be approximately 30' x 30'. If it is <br />necessary to construct [he pad [he available topsoil will be salvaged and stockpiled for final reclamation of <br />the pad. The topsoil may range in depth from 12 to 20 inches. All of the sites are located within an <br />existing sediment control system, therefore, secondaq~ sediment control a-ill not be needed for the pads. <br />It is planned to drive the auger or drill rig to the proposed boring locations without constructing roads or a <br />pad. "this is dependent upon ground conditions, and if conditions are such that excessive rutting will occur <br />then topsoil will be windrowed [o the side of the road and pad. Existing roads will be utilized to the extent <br />possible to minimize disturbance. The borings will be made and the hole will be backfilled or grouted, <br />unless it is determined that a monitoring +vell should be constructed to monitor water levels in the spoil or <br />bedrock. Any borings converted [o monitoring +vells will be added to TCC's existing hydrologic <br />. monitoring plan. At such time the appropriate completion information will be for+varded to the MLRD, <br />along with a monitoring schedule. <br />MR 97-154 2.0~-SS Revised 9/9/97 <br />