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I PRESENTATION OF CONE PENETRATION TEST DATA ' 1.0 INTRODUCTION This report presents the results of a Cone Penetration Testing (CPT) and in situ soil & groundwater sampling program carred out at the City of Manteca Corporation Yard site located in Manteca, CA The work was performed on January 8 and 9, 2002 The scope of work was performed as directed by Advanced Geoscience personnel 2.0 FIELD EQUIPMENT & PROCEDURES The Cone Penetration Tests (CPT) were carried out by GREGG IN SITU, INC of Signal Hill, CA using an integrated electronic cone system The CPT soundings were ' performed in accordance with ASTM standards (D 5778-95) A 20 ton capacity cone was used for all of the soundings (figure 1) This cone has a tip area of 15 cm2 and friction sleeve area of 225 cm2 The cone is designed with an equal end area fnction sleeve and a tip end area ratio of 0 85 The cones used during the program recorded the following parameters at 5 cm depth intervals - Tip Resistance (qc) lie - Sleeve Friction (ft) - Dynamic Pore Pressure (U) The above parameters were printed simultaneously on a printer and stored on a computer diskette for future analysis and reference The pore water pressure element was located directly behind the cone tip The pore water pressure element was 5 0 mm thick and consisted of porous plastic Each of the elements were saturated in silicon oil under vacuum pressure pnor to penetration Pore pressure dissipations were recorded at 5 second intervals when appropnate dunng pauses in the penetration iA complete set of baseline readings was taken pnor to each sounding to determine temperature shifts and any zero load offsets Monitoring base line readings ensures Ithat the cone electronics are operating properly The cones were pushed using GREGG IN SITU's CPT ng, having a down pressure capacity of approximately 25 tons Three CPT soundings were performed The penetration tests were carried to depths of approximately 112 feet below ground surface Test locations and depths were determined in the field by Advanced Geoscience personnel