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M <br /> Working To Restore Nature <br />' 1710 Mat Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br />' FAX (209) 838-3509 September 24, 1993 <br /> 54006 02 <br /> 1 <br />' Ms Ann Macdonald <br /> Environmental Affairs Manager - West <br /> Coca-Cola Enterprises, Inc. <br />' 7901 Oakport Street <br /> Oakland, CA 94621 <br />' RE- ThirdQ uarter 1993 Groundwater Monitoring Report for Coca-Cola Enterprises, <br /> Inc , Former Distribution Facility, 1100 North Wilson Way, Stockton, California <br /> 1 <br /> Dear Ms. Macdonald. <br /> As required by the San Joaquin County Public Health Services (SJCPHS) and at the request of <br /> Coca-Cola Enterprises, Inc. (Coca-Cola), RESNA Industnes, Inc (RESNA) has prepared this <br />' letter report summarizing the Thud Quarter 1993 Groundwater Monitoring and site activities <br /> performed at the above referenced site (Plate 1) Sampling was performed to monitor the <br />' distribution of petroleum hydrocarbons in groundwater at the site. Monitoring was performed <br /> to determine the groundwater flow direction and the hydraulic gradient in the uppermost aquifer <br /> In addition, an unrecorded facility well located inside a building on-site was abandoned during <br />' the third quarter. <br /> BACKGROUND <br />' Coca-Cola closed operations at the Distribution Facility in April 1990. Two steel underground <br /> storage tanks (USTs), fuel dispensers, product piping and vent piping were excavated and <br />' disposed as part of the abandonment process. One 10,000 gallon diesel UST, installed in 1978, <br /> and one 1,000 gallon gasoline UST, installed in 1937, were excavated to April 1990 (USTEC, <br /> September, 1991) The location of the former USTs are shown in Plate 2 <br />' Several environmental investigations have been conducted since tank removal including a soil <br /> gas survey in May 1990, a subsurface environmental investigation in August and September <br /> 1990; an additional subsurface investigation in October and November 1990, and quarterly <br /> groundwater monitoring. The results of these investigations are presented in the reports listed <br /> at the end of this report A soil vapor extraction test was conducted at the site by RESNA in <br />' November 1992 (RESNA, January 1993). Investigations have shown that the majority of <br />' 3QMR1993 FNL <br />