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<br />• <br />u <br />1?1 <br />Whirlwind Mine <br />30100 5110 Road <br />Gateway, Colorado 81522 <br />Materials Containment Plan <br />Revision 2 <br />SULFURIC ACID - 93% SOLUTION (continued) <br />Containment <br />• Primary: Steel, closed top, 55-gallon drums <br />• Secondary: 2-drum containment basin <br />Stored inside treatment trailer, protected from weather <br />ailer sum drains to external 400-gallon plastic tank <br />Treatment <br />Maintenance Requirements <br />• Drums should be kept inside treatment trailer, protected from weather <br />• Inspect drums regularly for leaks or corrosion <br />• Control source of spill or leak, if possible. <br />• Small Spills: Absorb spill with sand or non-combustible dry material and cover <br />with plastic to minimize contact with water. Carefully scoop up and <br />place in ;appropriate disposal container. Provide ventilation. Do not <br />flush with water. <br />• Large Spills: Prevent entry into waters of the state. Isolate area and deny entry to <br />unnecessary personnel. Absorb spill with sand or non-combustible <br />dry material and cover with plastic to minimize contact with water. <br />Carefully scoop up and place in appropriate disposal container. <br />Provide ventilation. Do not flush with water. <br />2 of 3