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'. <br />BROWN AND CALDWELL <br />CONSULTING ENGINEERS <br />May 27, 1987 <br />Ms. Laurie Cotulla, R.S. <br />County of San Joaquin <br />Local Health District <br />1601 East Hazelton Avenue <br />Post Office Box 2009 <br />Stockton, California 95201 <br />40th Anniversary 1947-19817 <br />Service • Excellence • Efc:encY <br />JUN c; '1987 <br />ENVIROMENTAL HEALTH <br />F ERMIT/SERVICES <br />017-3308-01/4 <br />Subject: Laboratory Results for ARCO Station 6100, Tracy, <br />and Leak Report for ARCO Station 2133, Stockton <br />Dear Ms. Cotulla: <br />Enclosed are the laboratory results of the May 14, 1987, samples <br />from the waste oil tank excavation at ARCO Station 6100, located at <br />25775 South Patterson Pass Road, Tracy, California. Two samples <br />were collected under the direction of San Joaquin County <br />representative Laura Campbell. Sample AT -1A was taken from beneath <br />the site of one underground waste oil storage tank at a depth of <br />approximately 13 feet. Sample AT -1B was taken from the side of - <br />the excavation at a depth of approximately 6 feet. The sampling <br />locations are shown on Figure 1. <br />Please confirm that the analytical results show that the soil is <br />uncontaminated and that no further waste oil tank investigative <br />work is required at the site. The on-site stockpile soil from the <br />waste oil tank excavation is currently being stored on sheet <br />plastic and covered. Please advise us of the action required to <br />reuse or dispose of the stockpile soil. <br />Also enclosed is the Underground Storage Tank Unauthorized Release <br />(Leak)/Contamination Site Report for ARCO Station 2133, located at <br />2908 Benjamin Holt Drive, Stockton, California. <br />If you have any questions or comments regarding the enclosures or <br />the subject sites, please contact Ms. Johanna Ambler at <br />(916) 444-0123. <br />Very truly yours, <br />;B:WN AND CALDWELL <br />WV <br />Lawrence E. Phillips <br />Project Manager <br />LEP: der <br />Enclosures (2) <br />723 S STREET SACRAMENTO. CA 95814 • (916) 444-0123 <br />