2011-07-21_PERMIT FILE - C1982056A (4)

Home Browse Search

The proposed Security Gate Installation will involve the following: • • Completion of grading and paving of an existing dirt parking /staging area (previously approved under MR07 -220) • Realignment of approximately 300 feet of the existing Ditch G -ld • Installation of a grated drainage collection basin, approximately 80 feet of 36 -inch culvert, and construction of a short connecting ditch • Foundation preparation for a modular security building within the existing disturbed area • Installation of a 1,500 gallon waste -water holding tank (sub - grade) and connecting pipeline • Installation of a 20 x 60 foot modular Security Building • Installation of a 1,500 gallon water tank (may be sub - grade) and connecting pipeline • Installation of a 1,000 gallon propane tank and connecting pipeline • Extension of a short powerline (up to 10 new powerpoles), and installation of a transformer • Construction of approximately 100 feet of security fence • Placement of concrete barriers Visitors and vendors entering the mine property will be required to stop and check -in at the Security Gate. Site hazard training and issuance of Personal Protective Equipment (PPE), will also occur at this location. The water tank will be filled from mine sources or by a contractor, and wastewater will be periodically pumped -out and hauled off -site by a contract disposal firm. Maintenance Shop/Warehouse Facility A mine warehouse and maintenance shop facility underwent a change in use and now houses a general meeting area and office space for mine personnel. TCC utilizes the former CYCC shop /warehouse complex to work on • equipment and store and dispense materials. TCC also utilizes a shop area northeast of its office; which was previously operated by CYCC as the Preventive Maintenance Bay. Uses of the shop area include construction, maintenance, and storage of materials, equipment, and various supplies. Access to the 2.5 -acre shop facility is designated on Map 24, Surface Facilities. The parking area east of the northeast shop facility was improved to allow better utilization of the area. The improvements required hauling in approximately 2,500 CY of spoil material to fill -in and raise the existing parking area so that runoff drains to both the north and south from this area. Drainage from this area is directed into ditches D -2, G -4, and D -6 (a and b). Design information for these ditches is contained in Exhibit 8. A small building has been constructed on the east side of the portal entry. The 10 x 12 x 8 foot building will house the portal slope heating system. Warehouse Expansion (MR07 -217) In order to accommodate increased material storage requirements associated with mine expansion and the new Washplant facility, the existing mine Warehouse facility was expanded to include two additions; a 3,950 square foot (158 x 25 foot) enclosed extension of the current pallet -rack storage area, and the addition of a 1,520 square foot (95 x 16 foot) covered shed storage area. Both additions connect to the existing Warehouse structure as shown on Figure EX49H -F1. The Warehouse expansion areas are contained within the existing disturbed area "envelope" defined by the outer edges of the current Warehouse facility, and resulted in no new surface disturbance. Construction involved limited excavation for the floor slab for the enclosed extension; shallow drilling (approximately 20 feet) for 18 -inch concrete support piers for both the enclosed extension and the covered shed storage; forming and pouring the piers and floor slab; erection of the pre- fabricated support frames for both • extensions; and placement and connection of the metal sheathing walls and roof. MR 11 -252 2.05 -18.1 02/23/11