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0. malfunctioning components, and recently implemented precautionary measures and best <br />practices. Facility operators and other personnel will have the opportunity during the briefings to <br />share recommendations concerning health, safety, and environmental issues encountered during <br />facility operations. <br />An outline for a typical training exercise is found in Appendix D. Records of the briefings and <br />discharge prevention training are kept on the form shown in Appendix B and maintained with <br />this SPCC plan and for a period of 3 years. <br />5.5 Security [40 CFR Part 112.7 (g)] <br />In accordance with 40 CFR 112.7(2), the plan may deviate from the requirements of paragraph <br />(g) if equivalent environmental protection by some other means of spill prevention, control, or <br />countermeasure are provided. The equivalent protection to fully fencing the facilities includes <br />the physical layout, location, and additional countermeasures taken at the facilities. Each of the <br />individual locations is located in a remote, rural area with limited access points available. The <br />bulk fuel storage areas are located at or near the shop at each location, which are typically on the <br />built-up waste rock area pad. These areas typically only have one point of entry at the access <br />road to each site, and a fence line with restricted access is located at each of these points. The <br />fences are locked when the site is not manned. Locks are also placed on fill caps of fueling <br />tanks. Also, each mine surface area is bermed at the edge of the rock pads to trap runoff and <br />spills. <br />When any of the units are in a non-operating status, the master flow and drain valves have <br />adequate security measures to ensure they remain in the closed position, and pump starter <br />controls are maintained in the off position inside a secure facility. If a unit is not in service or in <br />standby service for an extended period of time, the loading/unloading connections will be <br />securely capped or blank-flanged. <br />The facilities have lighting adequate to discover discharges occurring during the night and to <br />prevent acts of vandalism. <br />5.6 Tank Truck Loading/Unloading Rack Area [40 CFR Part 112.7 (h)] <br />Spill containment methods for loading areas are described in Section 3.0 of this Plan. Vehicles <br />place wheel chocks before all loading operations to prevent departure before all transfer lines are <br />disconnected. Fuel Oil trucks contain safety shut-off valves with dual valving. Spill equipment <br />is maintained inside a shelter or building near the tanks. Prior to filling and departure of any <br />tank truck, the lowermost drain and all outlets are closely inspected for discharges. Both the <br />facility representative and the delivery driver remain with the vehicle at all times during <br />unloading. Gauges on the truck are continuously monitored to ensure the ullage is not exceeded. <br />After fuel unloading is completed: <br />• The amount of fuel transferred to the tank is recorded in the log (Appendix B, Table 8). <br />• The fill hose is drained and then all drain valves are closed (if applicable) before they are <br />removed from the tank. <br />60 Denison Mines (USA) Corp. 24 <br />Sunday Mines SPCC Plan <br />December 2007