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- Professional Service Industries, Inc. <br /> r'��, 4703 Tidewater Avenue, Suite B <br /> ��� Oakland, CA 94601 LOG OF BORING B-1 <br /> Telephone: (510)434-9200 <br /> Fax: 510 434-7676 Sheet 2 of 2 <br /> PSI Job No.: 575308-2 Drilling Method: Hollow Stem Auger WATER LEVELS <br /> Project: Fountain Square Sampling Method: SS California Sampler �While Drilling 22.5 feet <br /> Location: 2808&2826 EI Camino Hammer Type: Manual <br /> Redwood City Boring Location: 1 Upon Completion 20.5 feet <br /> CA � Delay N/A <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 /> 30 o z.o a.o <br /> 9 18 CLAY,medium brown,very moist,stiff,some C� 5-7-14 � o PL=14 <br /> silt,trace fine sand N=21 Unconfined <br /> Compressive <br /> Strength In Situ= <br /> 1528 psf Remolded <br /> Silty SAND,medium olive-brown,moist,medium =1223 psf <br /> dense,fine sand,few clay SM <br /> 35 LL=16 <br /> 10 18 12-9-8 �9 � %passing#200= <br /> CLAY,medium olive-brown,moist,firm,trace N=17 32% <br /> silt <br /> CL <br /> 40 <br /> LL=40 <br /> 11 18 light-medium brown,few fine to medium sand 6-6-7 PL=18 <br /> N=13 <br /> Silty CLAY,medium greenish-brown,moist,stiff <br /> 45 CL <br /> LL=34 <br /> 12 18 5-5-8 PL=18 <br /> N=13 <br /> Silty SAND,medium olive grey,moist,dense, <br /> fine sand <br /> SM <br /> 50 <br /> 13 18 10-18-25 0 <br /> N=43 <br /> Boring terminated at 51.5 feet below ground <br /> surface. <br /> Groundwater encountered at 22.5 feet while <br /> drilling and 20.5 feet upon completion. <br /> Boring was backfilled with cement grout. <br /> Completion Depth: 51.5 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 />