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PRELIMINARY SITE ASSESSMENT REPORT <br /> Marino Brothers Trucking <br /> 3516 Newton Road <br /> Stockton, California <br /> 1. 0 INTRODUCTION <br /> This report presents the results of a preliminary site assessment <br /> of the property located at 3516 Newton Road, Stockton, California <br /> (the site) . The assessment was performed by Geological Audit <br /> Services, Inc. (GeoAudit) for the Bank of Stockton. The work was <br /> completed in accordance with the Workplan for Preliminary Site <br /> Assessment, submitted by GeoAudit to Mr. John Urrutia of Bank of <br /> Stockton and Mr. Harlin Knoll of San Joaquin County Public Health <br /> Services, Environmental Health Division (PHS/EHD) . The objective of <br /> this investigation is to determine whether there has been an <br /> unauthorized release of petroleum from an on-site fueling facility. <br /> The facility is presently not in operation, and is planned for <br /> removal. <br /> 2 . 0 BACKGROUND <br /> 2.1 Location and Site Description <br /> The site is located in a flat industrial/commercial area of <br /> northeastern Stockton. The location of the site is shown in Figure <br /> 1. The property was operated as a truck fueling station until 1992 . <br /> The property is currently operating as a truck dispatch yard. <br /> Figure 2 is a plan of the site, showing the locations of buildings <br /> and the fueling facility. Figure 3 is an enlargement of the fueling <br /> facility area. The facility consists of three 10, 000-gallon <br /> underground storage tanks (UST' s) , five dispenser islands, and <br /> associated piping. Two of the tanks contained diesel; the third <br /> contained unleaded gasoline. However, it is believed that the <br /> unleaded tank once contained leaded gasoline. It is our <br /> understanding that two above-ground storage tanks were also located <br /> on the property. It is believed that the above-ground tanks <br /> contained diesel and/or waste oil . One was located near the western <br /> side of the property and one was located near the center of the <br /> property at the southeast corner of the largest building. <br /> 2.2 Depth to Groundwater <br /> Depth to groundwater at the site is currently 50 to 60 feet. <br /> However, seasonal high groundwater (spring 1986) was estimated to <br /> be at depth of approximately 40 feet (San Joaquin County Flood <br /> Control Map) . Groundwater was not encountered during this <br /> assessment. <br /> 1 <br />