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1 <br />' Cone Penetrometer Testing (CPT) Report - November 2001 <br /> FLAME MINI-MART <br />' 1301 West Kettleman Lane, Lodz, California <br />' 1.0. INTRODUCTION AND SCOPE OF WORK <br /> At the request of Mr Pete Graff gna ofFlame Mini-Mart,Advanced GeoEnvironmental,Inc (AGE), <br />' has prepared the enclosed report for 1301 West Kettleman Lane(site), Lodi, California The report <br /> documents procedures and results for a cone penetrometer testing (CPT) subsurface investigation <br /> conducted at the site during 06 and 07 November 2001 The CPT Investigation was in accordance <br />' with the AGE-prepared Revised Work Plan Addendum-May 2001 and approved by the San Joaquin <br /> County Environmental Health Department (EHD) by letter dated 16 July 2001 The site setting is <br />' illustrated on Figure 1 Site structures and monitoring well locations are depicted on Figure 2 <br /> The objective of the CPT investigation was to characterize and assess concentrations of dissolved <br />' petroleum hydrocarbons and volatile halocarbons in ground water and to characterize the geologic <br /> and hydrogeologic framework of the site This report has been prepared in accordance with <br /> guidelines issued by the California Regional Water Quality Control Board- Central Valley Region <br />' (RWQCB)for investigations of underground storage tank(UST)sites Background information and <br /> site history was summarized in the AGE-prepared Preliminary Site Assessment Work Plan dated 30 <br /> June 1999 <br /> lie <br /> 2.0. CONE PENETROMETER TESTING SOIL BORINGS <br />' On 06 and 07 November 2001, four paired soil borings (CPT-1 through CPT-4) were advanced at <br /> the Flame Mini-Mart site utilizing CPT technology to characterize the geologic and hydrogeologic <br />' framework and to identify potential petroleum-migration pathways beneath the site Additionally, <br /> "grab"ground water samples were collected from selected depths at each CPT soil-boring location <br /> to assess the released fuel impact on ground water in selected hydrogeologic units Boring logs are <br />' presented in Appendix A, a site pian depicting boring locations is presented in Figure 2 <br />' 21 CONE PENETROMETER TESTING LITHOLOGIC SOUNDINGS <br />' Four paired CPT soil borings were advanced vertically to 100 feet below surface grade(bsg)utilizing <br /> a 25-ton truck-mounted CPT drill rig equipped with 1 50-inch diameter hollow-stem rods (See <br /> Figure 2) <br /> IEach CPT soil boring utilized a hydraulic ram to advance a cone penetrometer tip to the total depth <br /> of each soil boring Soil parameters such as cone penetrometer tip resistance,sleeve friction,fraction <br /> I ratio (ratio between sleeve friction and tip resistance) and pore water pressure were continuously <br /> measured as the cone penetrometer was advanced to depth A continuous boring log was generated <br /> Advanced GcoEnvironmental,Inc <br />