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. PRESENTATION OF CONE PENETRATION TEST DATA 10 INTRODUCTION This report presents the results of a Cone Penetration Testing (CPT) program carried out at the Singh site, located in Tracy, CA The work was performed on October 4, 2000 The scope of work was performed as directed by Aqua Science personnel 2.0 FIELD EQUIPMENT & PROCEDURES The Cone Penetration Tests (CPT)were carried out by GREGG IN SITU, INC of Martinez, CA using an integrated electronic cone system The CPT soundings were performed in accordance wth ASTM standards (D3441) A 20 ton capacity cone was used for all of the soundings This cone has a tip area of 15 sq cm and friction sleeve area of 225 sq cm The cone is designed with an equal end area friction sleeve and a tip end area ratio of 085 The cones used during the program recorded the following parameters at 5 cm depth intervals - Tip Resistance (Qc) - Sleeve Friction (Fs) - Dynamic Pore Pressure (Ut) i 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 glycerin under vacuum pressure prior to penetration Pore pressure dissipations were recorded at 5 second intervals when appropriate during pauses in the penetration A complete set of baseline readings was taken prior to each sounding to determine temperature shifts and any zero load offsets Monitoring base line readings ensures that the cone electronics are operating properly The cones were pushed using GREGG's truck-mounted CPT rig, having a down pressure capacity of approximately 25 tons Two (2) CPT soundings were performed to depths of approximately 60-70 feet Test locations and depths were determined in the field by Aqua Science personnel