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3.2 St. Jude Mine <br /> <br />Description: The St. Jude Mine is a uranium mine excavation facility with a mine entrance <br />portal and a main shop. The facility stores and uses petroleum in the form of diesel fuel, engine <br />lubricating oil, hydraulic oil, and rock drill oil. The products are stored in ASTs, and are used at <br />the mine site as needed. The Site Location Map and a mine-specific Site Map are included in <br />Appendix A of this plan. The Site Map (Figure 2B) shows the location of oil containers, <br />buildings, unloading/loading areas, and critical spill control structures. <br />Operation: The facility operates as a repair shop, and active mining excavation operations are <br />occurring at this time. The site is manned during regular work hours from 7:00 AM to 5:00 PM <br />Monday through Thursday. Occasionally the site is manned on Fridays also. Personnel at the <br />facility include a facility manager, maintenance personnel, and mining personnel. <br />Bulk Storage: St. Jude Mine has one 2500 gallon aboveground diesel fuel storage bulk storage <br />tank located outside of the main shop. The tank is located in a steel storage "C" container that <br />has been modified to provide impervious secondary containment. Secondary containment <br />dimensions and volume calculations are presented in Appendix C. Two 55 gallon drums are <br />located in the same container, in separate containment units outside of the diesel tank. <br />Secondary containment units are sized to provide containment for the entire capacity of the <br />largest single container and sufficient freeboard to contain precipitation. The oil containing <br />storage and equipment are summarized in Table 3-2 below. All containers with capacity of 55 <br />gallons or more are included. <br />Overfill prevention for the 2500 gallon diesel fuel tank is provided by an automatic shutoff <br />sensor in the nozzle of the delivery truck hose. <br />The non-SPCC regulated storage at this facility consists of two buried water tanks located <br />approximately 200 feet north of the portal. <br />Equipment: This facility has no SPCC-regulated equipment. <br />Loading Operations: The St. Jude Mine receives diesel fuel via tank truck deliveries. All <br />suppliers must meet the minimum requirements and regulations for tank truck loading/unloading <br />established by the U.S. Department of Transportation. Denison ensures that the vendor <br />understands the site layout, knows the protocol for entering the facility and unloading product, <br />and has the necessary equipment to respond to a discharge from the vehicle or fuel delivery hose. <br />The facility manager or his/her designee supervises oil deliveries for all new suppliers, and <br />periodically observes deliveries for existing, approved suppliers. All loading and unloading of <br />tank vehicles takes place only in the designated loading rack/unloading area. Vehicle filling <br />operations are performed by facility personnel trained in proper discharge prevention procedures. <br />The truck driver or facility personnel remain with the vehicle at all times while fuel is being <br />transferred. The fuel delivery truck is equipped with an automatic shutoff nozzle sensor. <br />Piping Systems: There are no sections of aboveground piping at this location. <br />Denison Mines (USA) Corp. 11 SPCC Plan <br />Sunday Mines December 2007