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I <br />' Cone Penetrometer Testing Report - Fourth Quarter 2 02 <br />' WATERLOO FOOD & FUEL <br /> 3032 East Waterloo Road, Stockton, California <br />' 1.0. INTRODUCTION AND SCOPE OF WORK <br />' At the request of Mr Paul Sidhu, Advanced GeoEnvironmental, Inc (AGE), has prepared the <br /> enclosed report for 3032 East Waterloo Road, Stockton, California The report documents <br /> procedures and results for a cone penetrometer testing (CPT) investigation conducted at the site <br />' during late September and early October 2002, the objective of the investigation was to model the <br /> geologic and hydrogeologic frameworks and to assess potential dissolved petroleum-migration <br /> pathways beneath the site The site setting is illustrated on Figure 1, site structures, bonng, <br />' monitoring well and CPT locations are depicted on Figure 2 <br /> This report has been prepared in accordance with guidelines issued by the Central Valley Regional <br />' Water Quality Control Board(CVRWQCB) for investigations of underground storage tank(UST) <br /> sites A summary of previous investigations at the site and background information was included in <br /> the AGE-prepared Interim Remediation and Site Assessment Work Plan, dated 25 January 2001 <br /> • 2.0. PROCEDURES <br /> In September and October 2002, five paired bonngs (CPT-4 to CPT-8) were advanced on-site <br /> utilizing CPT technology Lithologic data was collected from an initial CPT soil boring at each <br /> boringlocation,a twin boring was then advanced immediately adjacent to the initial CPT soil boring <br /> to collect grab ground water samples from selected depths CPT logs are presented in Appendix A, <br /> a site plan depicting boring locations is presented in Figure 2 <br /> 21 CPT LITHOLOGIC INVESTIGATION <br /> The CPT investigation utilized a 25-ton truck-mounted CPT drill rig equipped with 1 50-Inch <br /> diameter hollow-stem rods A hydraulic ram was utilized to advance a cone penetrometer tip <br /> attached to the hollow-stem rod assembly to total depth of each soil boring Soil borings were <br /> advanced vertically to the following total depths at the specified locations <br /> rCPT-4 was advanced to 118 feet below surface grade (bsg) at the northern edge of the <br /> Waterloo Road sidewalk, west of the site, <br /> ICPT-5 was advanced to 125 feet bsg on the eastern edge of Golden Gate Avenue, <br /> approximately 150 feet south of Waterloo Road, <br />' CPT-6 was advanced to 165 feet bsg on the western edge of Chronicle Avenue, <br /> approximately 250 feet south of Waterloo Road, <br /> I <br /> Advanced GeoEnvironmental,Inc <br />