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Callin -neaEnvironmental <br /> February 6, 1995 Canonte Environmental Services Corp <br /> 1710 Main Street <br /> Escalon California 95320 <br /> ' Phone 209 838 3507 <br /> Ms Ann Macdonald phone 800 926 0806 <br /> Fax 209 838 3509 <br /> Environmental Affairs Manager - West <br /> t Coca-Cola Enterprises, Inc <br /> 7901 Oakport Street <br /> Oakland, CA 94621 <br /> tSubject Fourth Quarter 1994 Groundwater Monitoring Report for Coca-Cola Enterprises, <br /> Inc , Former Distribution Facility, 1100 North Wilson Way, Stockton, California <br /> tDear Ms Macdonald <br /> tAs required by the San Joaquin County Public Health Services (SJCPHS) and at the request of <br /> Coca-Cola Enterprises, Inc (Coca-Cola), Canome Environmental Services Corp , formerly <br /> RESNA Industries Inc (RESNA), has prepared this letter report summarizing the Fourth Quarter <br /> 1994 Groundwater Monitoring and site activities performed at the above referenced site (Plate <br /> 1) Sampling was performed to monitor the distribution of petroleum hydrocarbons in <br /> groundwater at the site. Monitoring was performed to determine the groundwater flow direction <br /> 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 /> ' 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 /> ' and within a radius of about 20 feet of the former 1,000 gallon gasoline UST tank pit A soil <br /> vapor extraction system was constructed at the site and began operating July 23, 1993 <br /> Quarterly groundwater monitoring results have shown detectable levels of petroleum <br /> 1 <br /> 5400561QUARTLYI4QMR1994 FNL <br />