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1 �..� <br /> Wright Environmental Services, Inc., CA Exploratory Boring Log <br /> PMW No.4509 BORING NO.MW-2 Drilling Method:8"Hollowstem Page 1 of i <br /> Loured by:CMP Date:Dec.11,2008 BOREHOLE COMPLETION: <br /> (Mat City of Tracy Well Installed:2"dia.Sch.40 PVC <br /> Loc&**:99 W.6th Street Total Depth:26.5' Casing Depth:25' <br /> Tracy,CA Screen Length:15' Slot Size:0.020 <br /> Perms SJC EHD 55561 Blank Length:10' Sand Pack:#3 <br /> Vlfaler Levels:1st Enc:15-16'@ 11:20 Static:no measurement Top Sand Pack:8' Top Bentonite:6' <br /> m Grout Seal:6.5'to surface Vault Box i <br /> a <br /> 82WWie PID Blow E Depth Wait Detallf <br /> IliU2& IOV Count Lithology Log Backfill <br /> � s <br /> ML-Sandy SILT,yellowish brown 10YR4/4,slight plasticity,f-med.sand 35%, <br /> massive,firm,damp.cc <br /> ^^ <br /> c <br /> L ^nA <br /> 5 <br /> 0 6 EE <br /> ML-Clayey SILT,daruk yellowish brown 10YR416,slight to low plasticity, ^% <br /> v.f.sand 20%,very faint bedding,rare crs sand,firm,damp. <br /> 770 10 <br /> 0 11 Same as above,les sand,Iron oxide mottles throughout,stiff,damp. <br /> r <br /> SW-SAND,stained gray,f.-crs.sand 90%,fines 10%,slight odor,massive, <br /> 15 med.dense,damp to nearly saturated. <br /> r 40 22 <br /> 20 <br /> tie 46 5 <br /> IVA SP-SAND,yellowish brown 10YR514,nonplastic fines 5-10 + <br /> %,f.sand up to 95%,slight odorcontalns 2-Inch thick sandy silt interbeds, <br /> loose,saturated. 1 <br /> 1 <br /> 25 <br /> `fit►S y y SM-ML-Silty SAND to Sandy SILT,yellowish brown 10YR5/ no I le fines <br /> vary 20.40%,f.sand varies 60-80%,massive,loose,ve of <br /> Bottom o — f <br /> clay plug Iva I m <br /> e <br /> Reviewed by PG <br />