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Wright Environmental Services, Tracy, CA Exploratory Boring Log <br /> Project No. 4889 BoringlWall No. B-4 Well Installed:No <br /> Client:City of Tracy Date Drilled:Feb. 14,2003 Total Depth: <br /> Location:Waste Water Plant 3900 Holly,Tracy Logger:CMP Cement Grout Seal:21 'to Surface <br /> Drilling Method:Y 00 GeoProbe <br /> Permit:PHS EHD#32663 <br /> Water Levels: 1 st Enc., 13.5* Static:NM <br /> Sample Push o Depth Borehole <br /> No. PID E (ft) Lithology Log Completion <br /> GM-Silty GRAVEL FILL?,f,cys_sand with I.gravel,pit backfill? <br /> 0 Cfs,sand mixed,very dense,damp. Increasing clay at a feet. <br /> Driller calls change at 10 feetAA <br /> at CL-Sandy CLAY,grayish brown I0YR6t2,low plasticity,f.sand 25%, <br /> 0 —10 massive,stiff,very moist, <br /> 64-3 <br /> Our 0 15 SC-Clayey SAND,brown I OYR413,low plasticity,clay 304 , <br /> f.sand 70%,massive,dense,saturated;driller calls change at <br /> 16-17 feet, <br /> CH-Silly CLAY,brown 1 OYR5/3,mod.to high plasticity,no sand, <br /> massive,very stiff,damp,Sampler sleeve binds and Ops no recovery,log of'Up shoo and <br /> 042' 0 —20 sample remnants in sleeve. <br /> AA <br /> Bottom of Boring=21 feet <br /> Reviewed by RGICEG <br />