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will require the placement of conveyor belt, or similar ditch lining in the bottom of the ditch to minunize channel erosion. . During 1992 approximately 200,000 tons of low-quality coal were produced and placed in the stockpile. Likewise, during ] 993 and 1994 350,000 tons of ]ow-quality coal were produced and stockpiled. Thereafter, low~uality coal production rates have been variable, with a maximum of approximately 1,950,000 tons per yeaz oflow-quality coal produced and processed. Low-quality coal produced during 1994 was placed in the low-quality coal stockpile. During 1995 and in subsequent years, low-quality coal was placed in aloes-quality coal surge pile for direct feed to the coal preparation plant and TCC started recovering the ]ow-quality coal from the existing stockpile at an annual rate of ] 00,000 yards per year until all the low-quality coal was removed from the pile. production records, (ie: truck or scraper load counts), were utilized to estimate of the amount of low-quality coal transported to and subsequently recovered from the permanent disposal site. A total of approximately 550,000 tons of low-quality coal were transported to, and subsequently recovered from, the permanent disposal site. Construction of the preparation plant during 1994 and 1995 eliminated the need to haul the low-quality coal, discussed in the above paragraph, to the permanent refuse pile. The plant was originally designed to have the capability to produce 500,000 tons of clean coal per yeaz during a seasonal operating period of April through September, with the potential to produce at higher levels by extending the operating period. Internal plant modifications and progressive extension of coal washing operations to a year-round schedule have resulted in an increase in throughput capacity to a maximum of approximately 1,200,000 tons of clean coal per year. It is anticipated that actual clean coal output will range from approximately 700,000 to 1,200,000 tons per year, dependent on demand. In order to produce this amount of clean coal, approximately 1,120,000 to 1,950,000 tons of low-quality coal will be processed through the plant. With these throughput rates, approximately 420,000 to 750,000 tons/year of refuse would be generated and hauled to the approved refuse pile. In order to finalize the designs for the permanent waste rock disposal site field studies were undertaken and completed during the second quarter of 1992. The requued field studies were conducted during ]ate May and • included a site reconnaissance, test borings and excavation of test pits. The location of the drilllroles and test pits are shown on Map 23A. The following describe the proposed (and subsequently conducted) field studies for design and construction of the waste rock disposal facility. The borings will be approximately 80 feet deep, dependent upon spoil depth in the area. It is anticipated that the borings will be made by an auger, or if this is not possible a rotary rig will be utilized. it may be necessary to construct a pad for the auger or drill rig, and if so it will be approximately 30 x 30 feet. If it is necessary to construct the pad the available topsoil will be sah~aged and stockpiled for fmal reclamation of the pad. The topsoil may range in depth from 12 to 20 inches. All of the sites are located within an existing sediment control system, therefore, secondary sediment control will not be needed for the pads. It is planned to drive the auger or drill rig to the proposed boring locations without constructing roads or a pad. This is dependent upon Bound conditions. If conditions are such that excessive rutting will occur, then topsoil will be windrowed to the side of the road and pad. Existing roads will be utilized to the extent possible to minimize distwbance. The borings will be made and the holes will be backfilled or gouted, unless it is determined that a monitoring well should be constructed to monitor water levels in the spoil or bedrock. Any borings converted to monitoring welts will be added to TCC's existing hydrologic monitoring plan. At such time, the appropriate completion information will be forwarded to the MLRD, along with a monitoring schedule. TR06-52 2.05-g8 02/17/06