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Wright Environmental Services, Inc., CA Exploratory Boring Log <br /> Project No.4509 BORING NO.MW-3 Drilling Method:8"Hollowstem Page 1 of 1 <br /> Logged by:CMP Date:Dec. 11,2008 BOREHOLE COMPLETION: <br /> Client:City of Tracy Well Installed:2"dia.Sch.40 PVC <br /> Location:99 W.6th Street Total Depth:26.5' Casing Depth:25' <br /> Tracy,CA Screen Length:15' Slot Size:0.020 <br /> Permit:SJC EHD 55561 Blank Length:10' Sand Pack:#3 <br /> Water Levels: 1 st Enc: 14'@ 13:50 Static:no measurement Top Sand Pack:8' Top Bentonite:6' <br /> d <br /> Grout Seal:6'to surface Vault Box <br /> CL <br /> Sample PID Blow E Well Detail/ <br /> No. /OV Count v) Depth Lithology Log Backfill <br /> vAsohalt 77 <br /> m <br /> ML-Sandy Clayey SILT,brown 10YYR4/3,low plasticity,f.sand 25%, <br /> `6 massive,soft,damp. <br /> v <br /> m <br /> MW-3 5 <br /> @ 5, 0 push SM-ML-Silty SAND to Sandy SILT,brown 10YR4/3,nonplastic fines up to 50%, <br /> vf.f.sand up to 50%,massive,soft to loose,damp. <br /> MW-3 10 <br /> 0 2 <br /> @ 11.5SM-Silty SAND,yellowish brown 10YR5/6,nonplastic fines 30%,vf.to f.sand <br /> 70%,massive,loose damp to moist. <br /> v <br /> MW-3 15 <br /> @ 16.5' 0 6 SM-SW-Silty SAND to SAND,yellowish brown 10YR5/6,nonplstic fines up to 20%, <br /> f.to crs.sand 80-90%,massive,loose,saturated;contains thin sandy clay <br /> interbeds at 15-16 feet. <br /> MW-3 20 <br /> @ 21.5' 0 9 SP-SAND,brown 10YR5/3,nonplastic fines<5%,f.to med.sand 95%,loose, <br /> saturated. <br /> 25 <br /> MW-3 <br /> @ 26.5' 0 6 SM-SC-Silty SAND to CLayey SAND,yellowish brown 10YR5/6,slight to no <br /> plasticity,fines 30%,f.to med.sand 70%,loose,very moist to saturated. <br /> Bottom of Boring=26.6 feet <br /> clay plug swabbed into sampler hole. <br /> Reviewed by PG <br />