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allow for free movement of air in the pressure relief/accumulator pipe but prevent fluid discharge, at some <br />point in the future. So long as no dischazge is anticipated or occurs, the provisions of Rule 4.05.2 are not <br />applicable. <br />When the holes ate no longer needed, they will be grouted from the bottom of the casing to within three <br />feet of the surface. The remaining four feet of casing will be cut off and discarded and then the area <br />graded, topsoiled and seeded as per the approved plan. The holes will be located within the existing vent <br />shaft pad disturbance azea. Concurrent with road construction a power distribution line will be extended <br />from the existing substation to the pad-mounted transformer at the shaft site. The power distribution line is <br />approximately 3,600' long with a total of 12 power poles. <br />In order to minimize potential environmental and aesthetic impacts associated with the NW Mains <br />ventilation shaft and fan installation, surface drainage at the shaft site will be handled by an upgradient <br />diversion ditch, perimeter berms, pad topsoil stockpile collection ditches, gravel surfacing, and a sump <br />with rock check dam and vegetative filter, under an SAE. The limited road drainage will be handled by <br />designed drainage structures. Active use areas aze gaveled to control dust and drainage, other disturbed <br />azeas (including topsoil stockpiles) will be stabilized with temporary vegetation, and structwes will be <br />painted in neutral earth-tone colors to blend with the natwal surroundings. <br />As shown on Map 23, additional entries will be driven to the north from the ventilation shaft site. These <br />entries will be needed to maximize the efficiency of the ventilation system. The entries will be driven in <br />the same manner as TCC's development work, i.e. continuous miners and shuttle cars. <br />18-Right Ventilation Shaft fl'R 04-44) <br />_ As mine development has proceeded to the north, the distance from existing mine ventilation fan <br />installations has increased to the point where an additional intake ventilation shaft is necessary to maintain <br />effective ventilation of active mining azeas. The new ventilation shaft will be located adjacent to Fish <br />Creek in Section 10, TSN, R86W on a low rise above the Fish Creek drainage, as shown on Maps 23 and <br />23B. <br />Development, construction, and installation of the ventilation shaft and fan installation (Figures 30 and <br />30a) involve the following sequential activities: <br />• Completion of environmental and engineering investigations <br />• Placement of disturbed area markers <br />• Mazking of stream and wetland buffer zone <br />• Temporary drainage and sediment control measures <br />• Recovery and stockpiling of available topsoil <br />• Installation of drainage and sediment control structures <br />• Construction of an access road and site prepazation for shaft pad <br />• Drilling of shaft pilot hole and grouting operations (as necessary) <br />• Construction of temporary power <br />• Construction of shaft collaz structure and temporary drilling equipment pad <br />• Shaft boring and casing operations <br />• Erection of escape hoist buildings and equipment and installation offence(s) <br />• Installation and connection of escape hoist control equipment and systems <br />Driving of additional entries at the back of the l 8 Right longwall panel <br />~~.. • Final clean-up and dressing of roads and site pads <br />TROS-48 2.05.45.3 08/22/05 <br />