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Harding Lawson Associates <br /> February 6, 1997 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> Page 3 <br /> in a residue-free detergent(such as Alconox, Liquinox, TSP, etc.) and rinsed in tap water and detonized <br /> water prior to each use. <br /> WASTE DISPOSAL: All drill cuttings and decontamination water will be retained on Site in clean, <br /> Department of Transportation-approved, 55-gallon steel drums, which are sealed and then labeled with <br /> the boring number and accumulation date. Upon receipt of the analytical results, cuttings and <br /> decontamination water will be disposed of at an appropriate waste disposal facility. <br />