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they will be grouted from the bottom to the top to stabilize them in the hole. In order to hang the power cables in the holes, a steel structure will be constructed over two or three of the cased holes (the additionai holes/borings aze discussed in the following paragaph). The structure will consist of steel beams supported on legs bolted to a concrete footer. The beams will be either 10 (up to three) or 14 (one each) feet in length, and the legs will be approximately 6.5 or 8 feet high. The footers will be approximately 4 x 4 x 4 feet. The 14-foot beam structures will be placed over the 24-inch borehole. Also, a 7 x 10 x 0.3 foot pad will be poured around the 24-inch borehole. The 10-foot beam structwes will be placed over the 6-inch diameter borings. A 7 x 6 x 0.3 foot pad will be poured around these borings. As part of the utility installation described above, TCC will advance up to three additional 6-inch cased borings at the existing NMD Power Borehole. This is required due to problems encountered in grouting the casings as approved in TR 00-37. These borings will be located on the same pad as the NMD Power Borehole, as they will terminate in the same entry underground as the NMD Power Borehole. During boring of the holes, the existing mud pit will be utilized, although it will require that it be dug out and reestablished at the site. It is in the same location as it was originally located. When the borings aze completed, the pit will be backfilled and the pad graded as previously described. 6-North Mains Substation No. 14 fMR05-2011 The proposed substation installation will consist of six concrete pads, including five designed to support transformers. The sixth pad will be a foundation fora 14 x 30 foot prefabricated metal building, containing electrical controllers and switch-gear. A buried ground-bed, adjacent to the substation will complete the substation installation. The proposed substation will be enclosed by a 120 x 110 foot, 8-foot high chain-link fence. The substation location is shown on Map 24. Substation details and a materials list, aze included in Exhibit 49E. It is important to note that TROS-48 (6-North Mains Shaft and Associated Ancillary Equipment and Facilities) addresses the construction, operation, and reclamation of the 6-North Mains ventilation shaft and associated ancillary equipment and facilities for TCC's Northern Mining District. TROS-48 addresses road construction, extension of a 69Kv power-distribution line from the existing substation at the Northwest Mains ventilation shaft, construction of the ventilation shaft and utilities pad, shaft boring and lining operations, and the potential associated impacts and control/mitigation/reclamation measures. Details for the underground utility components for the 6- North Mains shaft and Substation No. 14 aze addressed in both the TROS-48 and MROS-198 (6-North Mains Utility Boreholes) submittals, and are shown on the related Maps 23, and EX16E-M1 and M2. Mine Water Recyciin2 System -Fish Creek Borehole (MR 02-179) TCC is planning to construct a mine water recycling line from the Fish Creek Borehole ponds that will tie into the Escape Shaft and 10-Right underground waterline. The location of the line and associated facilities is shown on Map 24, Surface Facilities. The water line will further improve TCC's mine water recycling program and minimize the volume of water that has to be imported from outside the mine for dust control . Installation of the recycling system will require the following activities: 1) Installation of a pumping system at Fish Creek Borehole facility, 2) Electrical and control system modifications, 3) Installation of a waterline from the western settling cell to the Escape Shaft and 10-Right waterline, 4) tie-in of the waterline from the pond to the escape shaft and 10-Right waterline, and 5) Installation of manholes along the waterline for installing "T's" for stock-tank feeds. Installation of the pumping system will require construction of a concrete pad as a foundation for the pump and control building. The pad will slope towards the cell, or a drain pipe may be installed, so that any runoff from the pad will drain to the cell. A suction line from the pump will be placed in the western settling cell for pumping of the water up to the Escape Shaft or 10-Right waterline. The existing water treatment system will continue to function, in order to provide acceptable quality water for use in the underground mine dust suppression system. • The discharge line from the pump will be placed over the cell embankment and then buried and tied-in to the MR06-207 2.05-65.3 04/25/06