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BROWN AND CALDWELL 40th Anniversary 1947-1987 <br /> CONSULTING ENGINEERS Service • Excellence • Effidency <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 017-3308-01/4 <br /> Subject: Laboratory Results for ARCO Station 6-100, 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 /> AB N AND CALDWELL !.` ° r tPF—I <br /> Lawrence E. Phillips CNVf�OM1 <br /> Project Manager VIR0Jir"TAL HEAETN <br /> LEP:der <br /> /SERVICES <br /> Enclosures ( 2) <br /> 723 S STREET SACRAMENTO,CA 95814 •(916)4440123 <br />