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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 1 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 /> � o z.o a.o <br /> 2 inches of Asphalt over 4 inches of Aggregate <br /> Base <br /> Sandy SILT,medium brown,moist,firm,fine to ML 9 <br /> 1 18 coarse sand,some fine gravel,few clay. 3-3-4 <br /> -------------------- N=7 <br /> Silty SAND,medium brown,moist,medium <br /> 2 18 dense,fine to coarse sand,some fine gravel. SM 6-7-14 6 X ° DD=108 pcf <br /> N=21 <br /> 5 ° <br /> ° � 3 18 GravellySAND,medium brown,moist,medium 6-11-12 0 <br /> dense,fine to coarse sand,fine to medium N=23 <br /> ° gravel,numerous silt. <br /> o � <br /> o � 4 18 SP 15-15-19 � <br /> less silt. N=34 <br /> O <br /> 10 � <br /> 0 <br /> 5 18 dense,few silt. 10-16-15 � <br /> ° � N=31 <br /> O _ <br /> LL=51 <br /> PL=16 <br /> Q�=4.0 tsf <br /> 15 %passing#200 <br /> 6 18 CLAY,medium olive-brown,moist,very stiff. 5-10-12 22 0 90%Unconfined <br /> N-22 Compressive <br /> Strength In Situ= <br /> 8007 psf Remolded <br /> CH =6028 psf <br /> 20 <br /> 7 18 some silt. 5-10-18 0 <br /> N=28 <br /> 0 <br /> ° � Gravelly SAND,medium brown,saturated, <br /> 25 medium dense,fine to coarse sand,fine gravel, SP <br /> ° few silt. 15 X %passing#200= <br /> C� 8 18 5-6-12 0 5% <br /> ° N=18 <br /> CL <br /> 30 Continued Next Pa e <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 />