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N%WOI S"001 <br /> Wright Environmental Services, Inc., CA Exploratory Boring Log <br /> Project No.4509 BORING NO.MWA Drilling Method;8"Hoilowstem Page 1 of i <br /> Logged by:CMP Date:Dec.11,2008 BOREHOLE COMPLETION: <br /> Client:City of Tr&W Well Installed:2'dia.Sch.40 PVC <br /> Location:99 W.6th Son Total Depth:26.5' Casing Depth:25.5' <br /> Tracy,CA Screen Length:15' Slot Size:0.020 <br /> Permit:SJC EHD 666@1 Blank Length:10' Sand Pack:#3 <br /> Water Levels:1st Enc 13-14'@0850 Static:no measurement Top Sand Pack:8.5' Top Bentonite:6.5' <br /> u <br /> Grout Seal:6.5'to surface Vault Box <br /> CL <br /> Sample PID 81" E Well Detail/ <br /> No. 10V co�wrt W Depth Lilhology Log Backfill <br /> Asohalt <br /> SW-SAND Fill,damp <br /> r <br /> AAA AAA <br /> ML-Sandy SILT,yellowish brown 10YR516,slight plasticity,v.f.sand 20%. AAA <br /> _5_ crude bedding,firm,damp. <br /> MW-1 6 T <br /> @ 5' <br /> MW-1 10 <br /> ML-Sandy SILT,brown 10YR513,veru slightly plastic,f.-med.sand 35-40%, <br /> rare crs.sand,massive,stiff,damp. <br /> MW-1 �, * 15 <br /> SW-SAND,gray 10YR5/1,L-crs.sand 95%,tines 5%,massive,dense, <br /> ` saturated;rare fine gravel. <br /> MW-1i 20 <br /> 021.5- <br /> 0 ! Borehole flows 6 feet,fine to crs Sand and fine Gravel,dense,saturated. ; <br /> M Driller calls change at 22 feet. <br /> r <br /> SM-Silty SAND,yellow brown 10YR516,nonplaslic fines vary 5-20%,f.sand <br /> _i 25 80-95%,masive,loose,saturated;slight flowing.MW <br /> O <br /> @ 26.5' 0 <br /> Sottor�rf n -2 e <br /> clayphisRrab n 1� <br /> VVVIII____ <br /> w <br /> Reviewed by PG <br />