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Wright Environmental Service, Tracy, CA exploratory Boring Log <br /> Project No. 4889 Boring/Well 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: 3" OD GeoProbe <br /> Permit: PHS EHD#32663 <br /> Water Levels: 1 st Enc: 13.5' Static: NM <br /> Sample Push a Depth Borehole <br /> No. PID (ft) Lithology Log Completion <br /> u, <br /> o GM- Silty GRAVEL FILL?, f. crs. sand with f. gravel, pit backfill? <br /> �. <br /> a <br /> m <br /> c <br /> t 5 <br /> B-4-1 <br /> w 0 Crs. sand mixed, very dense, damp. Increasing clay at 6 feet. <br /> Driller calls change at 10 feet <br /> B <br /> Ai 0 10 CL- Sandy CLAY, grayish brown 10YR5/2, low plasticity, f. sand 25%, <br /> massive, stiff, very moist. <br /> 8-4 <br /> s 0 15 SC- Clayey SAND, brown 10YR4/3, low plasticity, clay 30%, <br /> f. sand 70%, massive, dense, saturated; driller calls change at <br /> 16-17 feet. <br /> CH- Silty CLAY, brown 10YR5/3, mod. to high plasticity, no sand, <br /> massive, very stiff, damp. <br /> Sampler sleeve binds and rips no recovery, log of tip shoe and <br /> 047 0 20 sample remnants in sleeve. <br /> Bottom of Boring =21 feet <br /> Reviewed by RG/CEG <br />