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E <br />7W LOG OF BACKHOE PIT <br />im I <br />LABORATORIES, INc. <br />P, . <br />T P73 <br />Project: Austin Road Landfill <br />Location: Stockton,' California <br />Logged By: A. Cregan <br />Fxcavated BY: Twininq Laboratories <br />Project Number: A681-02.02 <br />Date Started: 4/25/96 <br />Date Completed: 4/25/96 <br />Elevation <br />DEPTH <br />(fe4l) <br />(f. <br />M <br />SOIL SYMBOLS <br />SAMPLER SYMBOLS <br />AND nH TEST QATA <br />uscs <br />Soil Description <br />Remarim <br />0 <br />...... ..... <br />. . ..... ......... <br />.. 6R6AW&.6uy ; black (7.5YR <br />2.5�1), high plasticity, <br />highly developed prismatic <br />structure to a depth of 5cm <br />with width of fractures to <br />0.5cm, blebs of CaCO3 to 3mm <br />in dia. comprisiniq of ,% of <br />damp, organic <br />-2 <br />sample, sigh <br />odor <br />strong CaCO3 hardpan <br />development, 50 to 50% COCO#, <br />CL <br />`-'40J.9-50% silty clay. <br />CLAY; <br />mottled to light gray (10YR. <br />C00O3 <br />-4. <br />S <br />7/1), by CaCO3, <br />.develops horizontal beds to 1 <br />. cm ........................... <br />... . ... .... .... <br />SAND, Clayey; 30 to 40% <br />moderately platic silty clay, <br />60 to 70% fine-grained <br />arkosic sand, well rounded, <br />6 <br />no visible bedding <1% root <br />holes to 1 mm In dia., <br />moderately to strong cemented <br />by CaCO3 <br />CaCO3 decreases, easily <br />- <br />broken by hand <br />-8 <br />CaCO3 development, hardpan In <br />clayey sand <br />to - - - <br />Bottom of Pit <br />12- <br />14 <br />Notes: <br />