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• lII I <br /> • <br /> Middle Earth Geo Testing,Inc. <br /> 954 North Lemon Street <br /> Orange, CA 92867 <br /> • November 12, 2013 <br /> Mike Berrington <br /> RDM Environmental <br /> 1344 Disc Drive #183 <br /> • Sparks,NV 89436 <br /> Project Name: CPT Testing at"Huntbrook Holdings -Stockton" <br /> Project No.: N/A <br /> Dear Mr. Berrington: <br /> • <br /> Enclosed please find copies of the cone penetrometer testing (CPT) data for the above referenced project along <br /> with a copy of the corresponding invoice. <br /> The cone penetrometer testing conducted for this project consisted of pushing an instrumented cone-tipped probe <br /> • into the ground while simultaneously recording the resistance to penetration at the cone tip and along the friction <br /> sleeve. <br /> The cone penetrometer testing described in the report was conducted in general accordance with the current ASTM <br /> specifications (ASTM D 5778-95 and D3441-94) using an electronic cone penetrometer. <br /> • The CPT equipment operated by Middle Earth Geo Testing,Inc. (MEGT) consists of a cone assembly mounted at <br /> the end of a series of hollow sounding rods. A set of hydraulic rams is used to continuously push the cone and rods <br /> into the soil at a rate of 20-mm per second (approximately for feet per minute) while the cone tip resistance and <br /> sleeve friction resistance are recorded every 50-mm (approximately two inches) and stored in digital form. A <br /> specially designed all wheel drive 25-ton truck provides the required reaction weight for pushing the cone assembly <br /> • and is also used to transport and house the test equipment. <br /> The cone penetrometer assembly used for the project consists of a conical tip and a cylindrical friction sleeve. The <br /> conical tip has a 60° apex angle and a diameter of 35.6mm (1.40-inch), resulting in a projected cross-sectional area <br /> of 10 cm2(1.5 square inches). The cylindrical friction sleeve is 133-mm (5.25-inch) in length and has an outside <br /> • diameter of 35.8-mm (1.41-inch), resulting in a surface area of 150 cm2 (23 square inches) <br /> The interior of the cone penetrometer is instrumented with strain gauges that allow simultaneous measurement of <br /> cone tip and friction sleeve resistance during penetration. Continuous electric signals from the strain gauges are <br /> transmitted by a shielded cable in the sounding rods to the PC-based data acquisition hardware in the CPT truck. <br /> • The sounding log is also displayed on a monitor. <br /> The CPT data processing is performed using the truck mounted computer based data acquisition and presentation <br /> 2013256 Data Cover Letter <br /> 1 <br /> • <br />