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Wright Environmental Services, Inc., CA Exploratory Boring Log <br /> Project No.4509 BORING NO. MW-2 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: 1st Enc: 15-16'@ 11:20 Static: no measurement Top Sand Pack:8' Top Bentonite:6' <br /> m <br /> Grout Seal:6.5'to surface Vault Box <br /> Sample PID Blow Q <br /> E Depth Well Detail/ <br /> No. /OV Count m Lithology Log Backfill <br /> AsDhalt <br /> ML-Sandy SILT,yellowish brown 10YR4/4,slight plasticity,f.-med.sand 35%, <br /> co massive,firm,damp. <br /> c <br /> CU <br /> L <br /> MW-2 5 <br /> @ 5' 0 6 ML-Clayey SILT,daruk yellowish brown 10YR4/6,slight to low plasticity, AAA AAA <br /> v.f.sand 20%,very faint bedding, rare crs sand,firm,damp. <br /> MW-2 10 <br /> @ 11.5 0 11 Same as above, les sand, iron oxide mottles throughout,stiff,damp. <br /> SW-SAND,stained gray,f.-crs.sand 90%,fines 10%,slight odor, massive, <br /> 15 med.dense,damp to nearly saturated. <br /> MW-2 40 22 <br /> @ 16.5' <br /> MW-2 20 <br /> 21.5' 46 5 <br /> @° SP-SAND,yellowish brown 10YR5/4,nonplastic fines 5-10 <br /> %,f.sand up to 95%,slight odor,contains 2-inch thick sandy silt interbeds, <br /> loose,saturated. <br /> MW-2 7 7 FA725 <br /> @ 26.5' SM-ML-Silty SAND to Sandy SILT,yellowish brown 10YR5/4, nonplastic fines <br /> vary 20-40%,f.sand varies 60-80%, massive,loose,very moist. <br /> Bottom of Boring=26.6 feet <br /> clay plug swabbed into sampler hole. <br /> Reviewed by PG <br />