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_ �EJM`PN19.1 SLL4 <br /> 4 <br /> IJc W.566216 '' <br /> P.O. Box 69 Bus:(209)874-3722 <br /> Hickman,CA 95323 FAX:(209)874-3723 <br /> To whom it may concern, <br /> This letter is to inform your county of some of methods used <br /> for triple rinsing underground fuel tanks. I have enclosed a letter <br /> showing our procedure. Also I may note we use a degreaser to help in our <br /> cleaning method. <br /> As regards hazardous waste generated it will hauled away by <br /> California Oil Recyclers INC. <br /> As far as purging and inerting methods we first air the tank <br /> out until we get the L.E.L. to safe levels then we inert it by using <br /> 20 Lbs. Dry Ice per 1000 gallons. <br /> As regards soil samples they will be taken 24 inches below <br /> bottom of tank in undisturbed soil. <br /> Samples will be taken by Brass Tube in undisturbed soil, <br /> from Backhoe Bucket if necessary,iced in cooler. <br />