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- Professional Service Industries, Inc. <br /> r'��, 4703 Tidewater Avenue, Suite B <br /> ��� Oakland, CA 94601 LOG OF BORING B-4 <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 3 inches of Aggregate <br /> Base. <br /> Sandy SILT,dark brown,damp to moist,very <br /> 1 18 stiff,fine to coarse sand,fine gravel. M� 6-7-11 � X � <br /> N=18 <br /> Sampler blocked by rock,no recovery. <br /> O 2 0 16-19-23 � <br /> N=42 <br /> 5 ° <br /> � � 3 �g GravellySAND,medium brown,damp,medium 5-7-10 � <br /> o dense,fine to coarse sand,fine to medium N=17 <br /> � gravel. SP <br /> 0 <br /> .�°..��.�� <br /> 4 18 damp to moist,very dense. 10-18-36 » <br /> ° N=54 <br /> 10 <br /> 5 18 Silty CLAY,medium brown,moist,firm. C� 3-3-4 � <br /> N=7 <br /> CLAY,olive brown,moist,stiff. <br /> 15 <br /> 6 18 C� 5-6-6 � <br /> N=12 <br /> Silty CLAY,olive brown,moist,very stiff. <br /> CL <br /> 20 <br /> 7 18 6-10-11 � <br /> Sandy CLAY,medium brown,moist,very stiff, CL N=21 <br /> fine to coarse sand,fine to medium gravel. <br /> Boring terminated at 21.5 feet below ground <br /> surface. <br /> No Groundwater encountered. <br /> Boring was backfilled with cement grout. <br /> Completion Depth: 21.5 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 />