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PRESENTATION OF CONE PENETRATION TEST DATA <br /> �I <br /> 1.0 INTRODUCTION <br />' This report presents the results of a Cone Penetration Testing (CPT) and in situ soil & <br /> groundwater sampling program carried out at the site located at 419 S. Main Street in <br /> Manteca, CA. The work was performed on October 20th, 2003. The scope of work was <br /> performed as directed by Condor Earth personnel. <br /> 2.0 FIELD EQUIPMENT & PROCEDURES <br /> tThe Cone Penetration Tests CPT were carried out by GREGG IN SITU, INC. of <br /> Martinez, CA using an integrated electronic cone system. The CPT soundings were <br /> performed in accordance with ASTM standards (D 5778-95). A 20 ton capacity cone <br /> was used for all of the soundings (figure 1). This cone has a tip area of 15 cm2 and <br /> friction sleeve area of 225 cm2. The cone is designed with an equal end area friction <br />' sleeve and a tip end area ratio of 0.85. <br /> The cones used during the program recorded the following parameters at 5 cm'depth <br />' intervals: <br /> - Tip Resistance (qc) <br />' - Sleeve Friction (fs) <br /> - Dynamic Pore Pressure (U) <br /> The above parameters were printed simultaneously on a printer and stored on a <br /> computer diskette for future analysis and reference. <br />' The pore water pressure element was located directly behind the cone tip. The pore <br /> water pressure element was 5.0 mm thick and consisted of porous plastic. Each of the <br />' elements were saturated in silicon oil under vacuum pressure prior to penetration. Pore <br /> pressure dissipations were recorded at 5 second intervals when appropriate during <br /> pauses in the penetration. <br />' A complete set of baseline readings was taken prior to each sounding to determine <br /> temperature shifts and any zero load offsets. Monitoring base line readings ensures <br />' that the cone electronics are operating properly. <br /> The cones were pushed using GREGG IN SITU's CPT rig, having a down pressure <br />' capacity of approximately. 20 tons. Four CPT soundings were performed. The <br /> penetration tests were carried to depths of approximately 125 feet below 'ground <br /> surface. Test locations and depths were determined in the field by Condor Earth <br />