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• 2. Hazardous materials (cleaners, grease, oil, diesel, etc.) will be stored in the area <br />referred to as the "Pad" on maps C and C-2. A temporary shed (12'X20' on <br />skids) with alean-to extension will be used for small containers. A trailer may <br />also be used, if additional storage is needed. A berm will be constructed down <br />gradient from this storage. Absorbent materials (such asfloor-dry and pillows} <br />will be kept on site. Spills will be cleaned-up immediately. The diesel fuel tank(s) <br />will be placed in a bermed area with a liner of sufficient size to hold 110% of the <br />entire volume of the tank(s) should there be a spill or leak and leaving a 10% <br />reserve to accommodate rainfall. A Hazard Communication Program, as required <br />by MSHA, will be implemented, which includes training. Also, a MSDS list of <br />all hazardous materials will be maintained at the mine site. <br />3. No new portals will be built. The existing western portal is of sufficient size to <br />accommodate the equipment to be used in the underground mining. It currently is <br />8 ft wide by 9 ft high. It is expected that the eastern portal will be used only for <br />ventilation and as a second exit. Both portals will only be altered, as necessary, to <br />provide safe ground support by barring-down or rock bolting, <br />The access ramp to the portals was mentioned in Exhibit D, Surface Facilities, 1) <br />of the Amendment. Construction of the ramp through the sandstone cliff will be <br />by drilling and blasting. Broken material will be pulled up hill to be used as fill to <br />gain the elevation needed to reach the county road near the west end of the Pad <br />area. The road and ramp will be wide enough for the underground mining <br />• equipment, with the appropriate berms. <br />The planned ventilation hole (and any future holes) will be round, 60 inch <br />diameter, or smaller. A pilot hole, about 12 inches diameter, will be drilled <br />vertically from the surface into the existing stope, about 295 ft below. The hole <br />will then be up-reamed at the desired diameter, with the cuttings falling into the <br />stope, being handled as waste rock. This drilling may be by either atruck- <br />mounted rig, needing no surface preparation, or by a raise-bore machine, which <br />could require a small concrete pad at the hole collar. The fan will be placed on <br />the concrete pad, or on a frame constructed of steel, if concrete is not needed. All <br />required guards will be kept in place on the fan. Some surface casing will be <br />installed, if needed. A power pole, or poles, will be located in the 0.12 acres <br />permitted for the ventilation hole. This will hold a transformer, meter, and <br />switchgear. The electrical wire from the pole to the fan will be buried. <br />u <br />