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construction will consist of an all-metal steel post-and-arch system, with sheet-metal sheathing and internal <br />insulation. The addition will add approximately 2,886 square feet to the existing bathhouse with approximate <br />• dimensions of 31 x 98 feet. The design and structure of the addition match the existing building. <br />The topsoil stockpile originally designated for reclamation of the pazking lot and building azea (Stockpile SF-3, as <br />shown on Map 29) will be used to cover the new portion of the bathhouse during reclamation as specified on page <br />2.05-101. <br />Warehouse Exnansion (MR07-217) <br />In order to accommodate increased material storage requirements associated with mine expansion and the new <br />Washplant facility, the existing mine Warehouse facility was expanded to include two additions; a 3,950 squaze <br />foot (158 x 25 foot) enclosed extension of the current pallet-rack storage area, and the addition of a 1,520 square <br />foot (95 x 16 foot) covered shed storage area. Both additions connect to the existing Warehouse structure as shown <br />on Figure EX49H-Fl. The Warehouse expansion areas are contained within the existing disturbed azea "envelope" <br />defined by the outer edges of the current Warehouse facility, and resulted in no new surface disturbance. <br />Construction involved limited excavation for the floor slab for the enclosed extension; shallow drilling <br />(approximately 20 feet) for 18-inch concrete support piers for both the enclosed extension and the covered shed <br />storage; fomring and pouring the piers and floor slab; erection of the pre-fabricated support frames for both <br />extensions; and placement and connection of the metal sheathing walls and roof. <br />• <br />• <br />MR07-220 <br />2.05-18.1 <br />08/29/07 <br />