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Wright Environmental Services, Inc., CA Exploratory Boring Log <br /> Project No.4889 BORING NO. B-9(near builind in driveway) Drilling Method: GeoProbe 6600 Page 1 of 1 <br /> Logged by: CMP Date: October 28,2008 BOREHOLE COMPLETION: <br /> Client: City of Tracy Well Installed: No. <br /> Location:Wastewater Plant Total Depth:25' <br /> 3900 Holly Dr.,Tracy, CA <br /> Permit:SJC EHD SR 55560 Cement Grout Seal: 25'to surface <br /> Water Levels: 1st Enc: 12'(g 12:03 Static: NM <br /> m <br /> Sample PID Cont. <br /> No. Push cv Depth Well Detail/ <br /> Lithology Log Backfill <br /> Asphalt pavement and gravel fill. <br /> f <br /> B-9 <br /> CL-Sandy CLAY, brown 10YR5/3, low plasticity clay, f. to med. sand 20-30%, <br /> massive, stiff, damp. <br /> @5 0 5 <br /> 4 .' SP-SAND, gray 10YR5/1, f.to med. sand 95%,fines 5%, massive, dense, <br /> @ 10' 0 � •. 10 damp. <br /> ff Lost sample 10 to 15 feet, cuttings in bit show SP Sand. <br /> B-9 <br /> @ 15' 0 f <br /> 15 <br /> SP-CL-Interbeded SAND and Sandy CLAY, brown 10YR5/3, clay low plasticity, <br /> ,`;• sand f.to med. up to 80%in beds dense,clay up to 30%in beds 4 to 8-inches thick, <br /> stiff, sand beds saturted, clay moist. <br /> B-9 <br /> @ 20' 0 : <br /> }� 20 <br /> B-9 !`1f<' Same as above, snd beds decrease to 2-inches thick, increasing clay with <br /> p �;r depth, stiff, moist to saturated. <br /> @ 25 25 <br /> Bottom of Boring=25 feet <br /> Temporarily case borehole for water sample <br /> PID-reconnaissance vapor in ppm. <br /> Reviewed by PG <br />