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supplied to the tank by a mine contractor. Fuel use will range from 100 to 200 gallons per day, <br />with maximum fuel usage occurring while the mine is in full production. <br />D.5.9 Chemical Reagent Requirements and Hazardous Materials Management <br />Small volumes of waste oil, crank case oil, antifreeze, and non-chlorinated solvents will be stored <br />in the maintenance shop or in locked storage containers. Waste products of these chemicals, <br />collected as a result of routine vehicle and equipment maintenance, will be stored in steel drums <br />in the maintenance shop, or within a plastic and earthen lined bean area and will be picked up on <br />a periodic basis by a mine contractor. The majority of vehicle and equipment maintenance will <br />occur at the mine contractor's off-site facilities or at a maintenance shop located in nearby towns. <br />These materials will be disposed in accordance with federal, state, and local regulations. Safety <br />and handling of these chemicals will occur as directed on their respective material safety and data <br />sheets (MSDS), as required per M5HA. <br />Calcium chloride will be sprayed on the haul roads within the mine workings, W1tA, and portal <br />area to reduce fugitive dust. These chemicals will be stored in liquid form in a steel 500-gallon <br />tank located north of the maintenance shop (see Figure C-4). <br />Emergency contacts, to be used in case of a spill or fire, are posted at the Topaz Mine. Fire <br />extinguishers are located near fuel tanks, in the maintenance shop, and on each piece of <br />equipment. Mine personnel have training in the use of fire extinguishers. <br />D.5.10 Fencing and Site Security <br />The Topaz Mine area is secured by gates located at the surface facilities area and the portal. It is <br />difficult to access the surface facilities from the perimeter of the area due to steep grading. The <br />site will be secured when unattended. <br />D.6 Characterization of Ore and Waste Materials <br />Denison has been working with DRMS to develop appropriate characterization methods and <br />criteria. For waste rock piles and other residuals that may be left on site during mining and at the <br />cessation of mining activities. Characterization methods and implementation schedules are <br />currently under development. <br />5-18-2007 Exhibit D Mining Plan D-16 <br />