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w <br />BROWN AND CALDWELL <br />CONSULTING ENGINEERS <br />May 20, 1987 <br />Ms. Laurie Cotulla, R.S. <br />County of San Joaquin <br />Local Heath District <br />1601 E. Hazelton Avenue <br />Stockton, California 95201 <br />40th Anniversary 1947-1987 <br />Service Excellence Efciency <br />jAY,� <br />C PER �; NTAC ^ <br />T/S6RVI�ESCTh <br />Subject: Analytical Results for ARCO 6100, Tracy, <br />and Underground Storage Tank Leak Report <br />for ARCO Station 2133 <br />Dear Ms. Cotulla: <br />017-3308-01/4 <br />Enclosed are the analytical results of the May 14, 1987, soil <br />samples taken from the waste oil tank excavation at ARCO Station <br />6100 located at 25775 South Patterson Pass Road, Tracy, <br />California. Sampling locations are shown on Figure 1. The two <br />soil samples AT-lA and AT -1B were taken under the direction and <br />witness of San Joaquin County representative Ms. Laura L. Campell. <br />Please confirm that these results show no contamination, and that <br />no further investigative work is required at the site of the waste <br />oil tank excavation. <br />Please inform us of action required for the disposal or reuse of <br />the stockpile soil which was excavated during tank removal. The <br />on site stockpile is currently being stored on, and covered with <br />plastic sheeting. <br />Also, enclosed is the underground storage tank unauthorized <br />release (leak), contamination site report for ARCO Station 2133 <br />located at 2908 Benjamin Holt Drive, Stockton, California. <br />If you have any questions or comments regarding the analytical <br />results, the leak report, or the subject sites, please contact me <br />or Ms. Johanna Ambler at (916) 444-0123. <br />Very truly yours, <br />BROWN AND CALD ELL <br />Larry,6.. <br />. Phillips <br />Project Manager <br />LEP:JLA:lkb <br />Enclosure <br />723 S STREET SACRAMENTO, CA 95814 - (916) 444-0123 <br />