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1 <br /> Working To Restore Nature <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> ' FAX- (209) 838-3509 <br /> October 21, 1994 <br /> Ms. Ann Macdonald <br /> ' Environmental Affairs Manager - West <br /> Coca-Cola Enterprises, Inc. <br /> 7901 Oakport Street <br /> ' Oakland, CA 94621 <br /> Subject Third Quarter 1994 Groundwater Monitoring Report for Coca-Cola Enterprises, <br /> ' Inc., Former Distribution Facility, 1100 North Wilson Way, Stockton, California <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 Industries Inc. (RESNA) has prepared this <br /> ' letter report summarizing the Third Quarter 1994 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 /> BACKGROUND <br /> ' Coca-Cola closed operations at the Distribution Facility in April 1990. Two steel underground <br /> pe ty P <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 in 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 /> petroleum hydrocarbons in the soil were present from 0 to approximately 25 feet below grade <br /> 5"56\QunicTi.YN3QMR1994 Dior <br />