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• 1 <br /> T <br /> Wright Environmental Services, Inc. Tracy, CA Exploratory Boring Log <br /> Project No.4528 BORING NO.MW-2 frilling Method;8"Hollowslem Page 1 of 1 <br /> Logged by: CMP Date.Feb 2,2009 BOREHOLE COMPLETION: <br /> Client:City of Tracy Well Installed:2"dia.Sch.40 PVC <br /> Location:Boyd Service Center Totai Depth:26.5' Casing Depth:25' <br /> 560 N.Tracy Blvd.,Tracy Screen Length:15' Slot Size:0.020 <br /> Permit:SJC END 55563 Blank Length: 10' Sand Pack:#3 <br /> Water Levels:1st Enc: 14?@ 12.15 Static:14.5 @ 13:25 Top Sand Pack:8' Top Bentonite:6' <br /> Grout Seal:6'to Svfface Vault Box <br /> CL <br /> Sample PID Blow E Wall DetalY <br /> No. 10V Count rn Depth Lithology Log Backfill <br /> � h It ern <br /> m <br /> a' ML-Sandy SILT,brown 10YR513,nonplastic,0,sand 30%,massive,soft to "" I <br /> a firm,damp.. <br /> C <br /> " <br /> MW-2-1 <br /> ®5' 0 4 Same as above,v f.sand 40%,soft to firm,damp. <br /> @ 10'2 0-3 d 10 Stet-ML-Silty SAND to Sandy SILT,brown 10YR513,low plasticity silt varies 50-80°x, <br /> v f.sand varies 20-50%,massive,soft to loose,damp to molsl,stained?at <br /> 10.5-11.5 feet. <br /> Sheen on rods at 14.5 feet. <br /> MW-2-3 15 <br /> Qa 15' 22 3 <br /> Stat-ML-Silty SAND to Sandy SILT,stained gray,odor,slight to low plasticity lines, <br /> 0.sand 50-900 ,crudely bedded,soft to loose,saturated;sheen on water. <br /> MW-2-4 20 Same as above,interbedded SM-ML saturated overall,no stain below 21 feet, <br /> @ 20' 0.7 2 massive loose to soft- <br /> SM-Silty SAND,yellow brown 10YR514,slight plasticity fineslsilt 20-40%,vf.to E <br /> sand 60-80°x.locally interbedded,loose saturated,thin silt beds moist to very <br /> moist. <br /> MW-2-5 25- <br /> @ <br /> 5 @ 25' 0.1 4 zA <br /> v -Sandy SILT,yellowish brown 10YR514,slight to I p tics rns,`vif.sand <br /> ries 10-30%,massive,soft,damp to moist- <br /> w <br /> tto of Orin 2 feet <br /> drille a cla plu into T sampler hole. <br /> Reviewed by PG <br />