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Key to Log of Borings <br /> O o o In-Place <br /> L J ,.. a. <br /> O -- U (3 Moisture Dry <br /> o E a o LL °� SOIL DESCRIPTION vi _ (%dry Density <br /> � m D •o weight) (pcf) <br /> U) <br /> 0 <br /> Shelby Sampler <br /> Thin walled, 3 in. diameter, <br /> 3 ft. long, hydraulically advanced Groundwater V <br /> after drilling — <br /> Modified California sampler <br /> (3 in. O.D. split-barrel sampler <br /> with brass liners) driven by a <br /> 140 lb. hammer with a drop of 30 in. Groundwater 0 <br /> 5 encountered <br /> Bulk sample during drilling <br /> Loose soil removed for testing <br /> Seepage <br /> Standard Penetration test (SPT) sampler <br /> (2 in. O.D. split-barrel sampler) <br /> driven by a 140 lb. hammer with <br /> a drop of 30 in. <br /> •– 10 LM <br /> California Sampler <br /> (2.5 in. O.D. split-barrel sampler <br /> with brass liners) driven by a 140 Ib. <br /> hammer with a drop of 30 in. <br /> Shaded area denotes sample taken <br /> Hand Sampler (2.5 inch O.D. driven by hand) <br /> 15 <br /> Continuous Core Sampler <br /> 94 mm Christianson Sampler <br /> 47 Approximate blows per foot. <br /> 20 Solid line denotes soil or lithologic change <br /> Dashed line denotes gradational or approximate soil or <br /> _ lithologic change <br /> Heavy line denotes termination of boring <br /> NSR = No sample recovered <br /> D.S. = Disturbed sample <br /> 25 <br /> Earth Systems Consultants Pombo/Chevron KEY TO LOG OF BORINGS <br /> �� Northern California Tracy,California Figure A3 <br />