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0 <br /> OB-14 Drilled August 2 , 1988 <br /> ------------------------------------- <br /> Depth <br /> Interval USCS <br /> (feet) Symbol Description <br /> ------------------------------------- <br /> 0 - 13 OL Loamy silt: well graded; medium dense; <br /> moderately moist; dark brown. <br /> 13 - 23. SW Sand: well graded; loose; wet; medium yellow- <br /> gray. <br /> 23 - 30 ML Clayey silt and sand: poorly graded; <br /> slightly dense; wet; medium yellow-gray. <br /> 30 - 39- ML Clayey silt interbedded with clay: slightly <br /> dense; wet; medium yellow-gray; 2-inch thick <br /> layer of clay every 2 feet or so. <br /> 39 - 39.5 CL Sandy clay: stiff; wet; medium gray. <br /> 50 <br />