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KEY TO SYMBOLS <br /> symbol Description <br /> Strata symbols <br /> Fill <br /> ® Low plasticity <br /> clay <br /> Silty sand <br /> Clayey sand <br /> Poorly graded sand <br /> ® High plasticity <br /> clay <br /> ® Clayey gravel <br /> ® Silty low plasticity <br /> clay <br /> ® Silt <br /> Misc. Symbols <br /> = Water table at <br /> boring completion <br /> Water table during <br /> drilling <br /> Soil Samplers <br /> California sampler <br /> ❑ Standard penetration test <br /> t <br /> Notes: <br /> ' 1. These logs are subject to the limitations, conclusions, and <br /> ' recommendations in this report. <br /> 2. Soil borings were drilled by a truck mounted mobile B-24 drill rig utilizing 4- <br /> inch outside diameter solid stem augers. Soil samples were driven with a 140-pound <br /> hammer falling 30-inches from two and a half wraps on a rotating cathead. <br /> California Mofidied sample N-values are corrected by a factor of 0. 64. <br />