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0 <br /> SMTH <br /> ENVIRONMENTAL TECNN060GfES CORPORATION <br /> May 12, 1995 <br /> �f <br /> MqY <br /> Ms Ann Macdonald FNV/ 199,E <br /> Environmental Affairs Manager p� NSNgL H <br /> ' Coca-Cola Enterprises, Inc. FRVjCFS(ry <br /> 7901 Oakport Street <br /> Oakland, CA 94621 <br /> Subject First Quarter 1995 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), Smith Environmental Technologies (SMTH) has <br /> prepared this letter report summarizing the First Quarter 1995 Groundwater Monitoring and site <br /> activities performed at the above referenced site (Figure 1). Sampling was performed to monitor <br /> the distribution of petroleum hydrocarbons in groundwater at the site. Monitoring was <br /> performed to determine the groundwater flow direction and the hydraulic gradient in the <br /> tuppermost aquifer <br /> BACKGROUND <br /> ' Coca-Cola closed operations at the Distribution Facility in April 1990. Two steel underground <br /> Pe Y <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 Figure 2 <br /> ' <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 /> 5400551QUARTLY%IQMR1995 FNL <br /> 1710 Main Street - Escalon,CA 95320 (209)838-3507 • fax(209)838-3509 <br /> ' Engineenng - Consulting Remeduanon - Construction <br />