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• 10. Warehouse and Maintenance Shops <br />A mobile trailer and prefabricated Sprung structure will be used initially as the warehouse and <br />maintenance area, respectively, at the Whirlwind portal area. As the mine develops, these structures <br />will be replaced by a one bay service area and warehouse constructed on top of the existing 43-foot by <br />60-foot concrete pad of 6" thickness. This structure will be a prefabricated metal building that is <br />painted a BLM-approved color to better blend in with the surrounding natural features. Maintenance <br />activities will be limited to routine service and minor repairs. <br />A second maintenance shop is located in a short drift just north of the main Packrat portal. This <br />underground shop will be blocked in and equipped with a garage door. <br />11. Mine Offices and Shower Facilities <br />• A four-inch thick concrete pad with nominal dimensions of twenty feet by fifty feet will be constructed <br />immediately north of the warehouse and maintenance shop. A prefabricated metal building consisting <br />of mine offices and change/shower facilities (i.e., dry) will be constructed on this concrete pad. This <br />building will be contiguous with the shop and warehouse and will be painted the same color. This area <br />will have a chain link fence and gate to prevent unauthorized access when the mine is idle. Signs will <br />be posted stating that visitors must check in at the mine office. <br />A portable watchman's trailer will also be located on site as shown on Map C-2. This trailer will be <br />approximately 10 feet x 30 feet and may be used as sleeping quarters for a security person at night or <br />when the mine is not operating. A septic system will be installed for the shower and bathroom facilities <br />as described under utilities below. <br />12. Designated Parking and Storage Areas <br />A gravel parking area will be provided for employees and visitors just north and adjacent to the mine <br />• offices. <br />Whirlwind Mine 07 (rev. April 08) D-22 <br />