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CROSBY'& OVERTON <br />Environmental Management Inc. <br />8430 Amelia Street o Oakland, California 94621 <br />(445) 633-0336 1 <br />W 9 IN; 0 iv, F."WIN 1-19 01 ON N I DFA lily N; I D1 <br />Arrive at location <br />Conduct I safety meeting with site personnel after survey of area <br />Secure area as a no smoking area (minimum of 25 feet radius from <br />ignition sources) <br />Check quantity of material in tank <br />Check tank for Lower Explosive Limit (L.E.L.) oxygen with gasteeh <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 />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 Limit Oxygen. (in <br />Lower Explosive Limit is well below 10%9 set up for cuttingli <br />If Lower Explosive Limit is above 20% inert with dry ice <br />(20 pounds per 1000 gallons). The period of time to inert <br />varies between two to six hours. <br />-- Drill a 1/2 inch hole with electric drill motor and drill <br />to allow sawzall blade to enter tank <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 />