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i <br /> I <br /> PRESENTATION OF CONE PENETRATION TEST DATA <br /> 1.0 INTRODUCTION " <br /> This report presents the results of a Cone Penetration Testing (CPT) program carried out <br /> at the Del Monte site located in Stockton, CA. The work was performed from December 16- <br /> 22, 1999. The scope of work was performed as directed by CH2M Hill personnel. <br /> 2.0 FIELD EQUIPMENT & PROCEDURES <br /> The Cone Penetration Tests (CPT)were carred out by GREGG IN SITU, INC. of Martinez, y <br /> CA using an integrated electronic cone system. The CPT soundings were performed in <br /> accordance with ASTM standards (D3441). A 20 ton capacity cone was used for all of the <br /> soundings. This cone has a tip area of 15 sq.cm. and friction sleeve area of 225 sq.cm. <br /> The cone is designed with an equal end area friction sleeve and a tip end area ratio of <br /> 0.85. <br /> The cones used during the program recorded the following parameters at 5 cm depth <br /> intervals: l <br /> - Tip Resistance (Qc) <br /> I <br /> - Sleeve Friction (Fs) <br /> - Dynamic Pore Pressure (Ut) <br /> The above parameters were printed simultaneously on a printer and stored on a computer <br /> diskette for future analysis and reference. <br /> The pore water pressure element was located directly behind the cone tip. The pore water <br /> pressure element was 5.0 mm thick and consisted of porous plastic. Each of the elements <br /> were saturated in glycerin under vacuum pressure prior to penetration. Pore pressure <br /> dissipations were recorded at 5 second intervals when appropriate during pauses in the <br /> 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 that <br /> the cone electronics are operating properly. <br /> ti <br /> The cones were pushed using GREGG's truck-mounted CPT rig, having a down pressure <br /> capacity of approximately 25 tons. Five (5) CPT soundings were performed. The <br /> penetration tests were carried to depths of approximately 88.8 — 150.1 feet below ground <br /> surface. Test locations and depths were determined in the field by CH2M Hill personnel. <br /> i <br /> I <br /> 'r <br />