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Wright Environmental Services, Inc., CA Exploratory Boring Log <br /> Project No.4509 BORING NO.MW-2 Drllling Method:S"Hollowstem Page 1 of 1 <br /> Logged by:CMP Date:Dec.11,2008 BOREHOLE COMPLETION: <br /> Client:City of Tracy Well Installed r d1e.Sch-40 PVC <br /> Location:99 W.6th Street Total Depth:26.8 Casing Depth:25' <br /> Tracy,CA Screen Lenglh:I V Siot Size:0.028 <br /> Permit:SJC EHD 55561 Blank Length:1Q Sand Pack:#3 <br /> Water Levels:1st Enc:15-16'@ 11:20 Static:no measurement Top Sand hack:IV Top Bentonite:6' <br /> Grout Seal:6S to surface Vault Box <br /> CL <br /> Sample PID Blow E Well Detail/ <br /> No. /OV Count N Depth Lithology Log Backfill <br /> a <br /> Asphal <br /> ML-Sandy SILT,yellowish brown 10YR4/4,slight plasSAyt,[.•o*d sand 35%, <br /> a massive,firm,damp. <br /> C " <br /> L A^f <br /> MW-2 5 <br /> @ 5' 0 6 ML-Clayey SILT,daruk yellowish brown 10YR4/6,stt#t Is on iftrflaity, <br /> v.f.sand 20%,very faint bedding,rare crs sand,fi m,Aneip <br /> MW-2 ZY, 10 <br /> 0 11 Same as above,les sand,Iron oxide mottles througgwR sell,qoww <br /> r <br /> SW-SAND,stained gray.f.-crs.sand 90%,fines 1ft mlllllp►lios� -lselve, <br /> 15 med.dense,damp to nearly saturated. <br /> MW-3 40 22 <br /> @ 16.5' <br /> MW-4 20 <br /> 46 5 <br /> @ 21.5' <br /> SP-SAND,yellowish brown 10YR514,nonplastic fiann;i 8! <br /> f.sand up to 95%,slight odorconialns 2-inch Ihk&=a*so-AAs, <br /> loose,saturated. <br /> MW-5 y 7 25 <br /> @ 26.5' SM-ML-Silty SAND to Sandy SILT,yellowish brown 0.10 fines <br /> vary 20-40%,f.sand varies 60-80%,massive,loose, .� <br /> Bottom o `r <br /> clay plug Ava I <br /> V <br /> s <br /> Reviewed by PG <br />