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PROCEDURES FOR UNDERGROCVD TANK REMOVAL: <br /> f, by adding solid carbon dioxide (dry ice) in the amount of 1.5 <br /> pounds per 100 gallons of tank capacity. The dry ice should be <br /> crushed or sliced and distributed evenly over the greatest area <br /> to secure rapid evaporation. Avoid skin contact with dry ice <br /> because it will produce burns. As the dry ice vaporizes flammable <br /> vapors will flow out of the tank and may surround the area. <br /> Observe all nc_mal safety precautions regarding flammable vapors. <br /> Make sure that all of the dry ice has vaporized. <br /> g. After the tank has been freed of vapors and before the tank is <br /> removed from the site, plug or cap all holes. Use boiler plugs <br /> to plug any ccrrosion leak holes. The plug should have a 1/8 inch <br /> vent hole to prevent the tank from being subjected to an excessive <br /> pressure differential caused by extreme temperature changes. <br /> h. Finally the tank should be secured on a truck for transportation <br /> to the disposal site. The tank should be secured so that the 1/8 <br /> inch vent hole is located at the uppermost point on the tank. <br /> Page 5 of 5 <br />