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Key to Log of Borings <br /> C5 0) <br /> Z 0 a� �' In-Place <br /> o <br /> U <br /> m ° s `� o° ,�' U Moisture Dry <br /> o E a 3 u- SOIL DESCRIPTION a <br /> ca (U %8 v dry Density <br /> m a 'o weight) (pcf) <br /> 0 <br /> W Shelby Sampler <br /> Thin walled, 3 in. diameter, <br /> 3 ft. long, hydraulically advanced Groundwater <br /> — <br /> Modified California sampler after drilling <br /> (3 in. O.D. split-barrel sampler <br /> with brass liners) driven by a <br /> 140 Ib. 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 Ib. hammer with <br /> a drop of 30 in. <br /> 10 <br /> ~ California Sampler <br /> rM (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 /> `r 20 Solid tine 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 /> v <br /> Earth Systems Consultants Corral Hollow KEY TO LOG OF BORINGS <br /> Northern Califomila Tracy,California Figure A3 <br />