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- Professional Service Industries, Inc. <br /> r'��, 4703 Tidewater Avenue, Suite B <br /> ��� Oakland, CA 94601 LOG OF BORING B-3 <br /> Telephone: (510)434-9200 <br /> Fax: 510 434-7676 Sheet 1 of 1 <br /> PSI Job No.: 575308-2 Drilling Method: Hollow Stem Auger WATER LEVELS <br /> Project: Fountain Square Sampling Method: SS California Sampler � <br /> Location: 2808&2826 EI Camino Hammer Type: Manual � <br /> Redwood City Boring Location: - <br /> CA � <br /> Station: N/A � STANDARD PENETRATION <br /> � Offset: N/A o L TEST DATA <br /> � � o a o � � c o N in blows/ft O <br /> � J � z � 'N `° ai X Moisture 0 PL <br /> o L L a� a ��, MATERIAL DESCRIPTION � Q � t LL Additional <br /> a a � � N �, o zs so Remarks <br /> .; � � � � > � 3 0 <br /> w � � � � � v�i m � <br /> � � � STRENGTH,tsf <br /> a � Qu � Qp <br /> � <br /> � o z.o a.o <br /> 2 inches of Asphalt over 4 inches of Aggregate <br /> Base <br /> 1 18 Sandy SILT,dark-brown,damp to moist,firm, 3-3-4 � � <br /> fine to coarse sand,few fine gravel M� N=7 <br /> 2 �g trace of gravel,brown 3-3-3 10 o X <br /> N=6 <br /> 5 <br /> 3 18 Gravelly SILT,medium brown,moist,stiff,fine to ML 4-7-7 � <br /> coarse sand,fine to medium gravel N=14 <br /> CLAY,medium brown,moist,stiff,some silt CL <br /> 4 18 Silty SAND,medium brown,moist,loose,fine to 3-4-4 � � <br /> coarse sand SM N-g <br /> 10 <br /> 5 18 7-8-10 0 <br /> Silty CLAY,medium brown,moist,very stiff, C� N=18 <br /> some sand <br /> 15 CL <br /> 6 18 CLAY,dark brown,moist,very stiff 6-10-10 � <br /> N=20 <br /> Boring terminated at 16.5 feet below ground <br /> surface. <br /> No Groundwater encountered. <br /> Boring was backfilled with cement grout. <br /> Completion Depth: 16.5 ft Sample Types: Latitude: 37.47° <br /> Shelby Tube <br /> Date Boring Started: 7/18/11 Longitude:-122.2° <br /> Date Boring Completed: 7/18/11 Auger Cutting Hand Auger Drill Rig: <br /> Logged By: ER/SR Split-Spoon Calif.Sampler Remarks: <br /> Drillin Contractor: E loration GeoServices, I Rock Core Texas Cone <br /> The stratification lines represent approximate boundaries. The transition may be gradual. <br />