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CROSBY & OVERTON <br /> Environmentol Monogement Inc. <br /> 8,130 Amelia Street C Oakland,California 94621 <br /> (4115)633.0336 <br /> PROCEDURES <br /> WHICHFOR <br /> HASOBEENLOIL TANK <br /> UNEARTHED <br /> -- Arrive at location <br /> Conduct safety meeting with site personnel after survey of area <br /> -- area (minimum of 25 feet radius from any <br /> Secure area as a no smoking <br /> ignition sources) <br /> -- Check quantity of material in tank <br /> Check tank for Lower Explosive Limit (L•E.L. ) oxygen with gastech � <br /> -- Remove any free standing liquids from tank with vacuum truck, <br /> grounding both tank and truck to common ground <br /> -_ Vacuum tank exhaust is located at least 25 feet from ignition <br /> source <br /> Check Lower Explosive Limit Oxygen with gastech <br /> (If Lower Explosive Limit is 10% or lower, set up to cut tank) <br /> -- If Lower Explosive Limit is above 10%, rinse tank with fresh water <br /> (approx. 20 gallons) <br /> Remove rinse water from tank, pulling vacuum from top of <br /> product trying to remove any light ends (Check ground) <br /> Check with gastech for Lower Explosive LimitOxygen. <br /> fore cutting¢ <br /> Lower Explosive Limit is well below 10%, <br /> 0% inrt withice <br /> If Lower Explosive Limit is above 2eof time todry <br /> - (20 pounds per 1000 gallons) . The Period <br /> varies between two to six hours. <br /> Drillla 1/2 incl hole with <br /> eelectric <br /> drill motor and drill <br /> to <br /> blad <br /> to <br /> Cut with sawzall a 3 foot by 3 foot access in tank <br /> -_ Remove all remaining free standing liquids , (Check ground) , <br /> with vacuum truck. <br /> 24 Hour Emery ency Response(800)821-0424 <br />