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Wright Environmental Services, Inc., CA Exploratory Boring Log <br /> Project No. 4669 Boring/Well No. B-1 Well Installed: No <br /> Client: M&M Builders Date Drilled: March 17, 2000 Total Depth: 26.5' <br /> `..i Location: 8111 W. 11th St., Tracy, CA Logger: CMP Cement Grout Seal: 26.5' to surface <br /> Drilling Method: 3" OD GeoProbe/8"OD Hollowstem Auger <br /> Permit: PHS EHD 0021743 <br /> Water Levels: 1st Enc: 12'± @ 09:11 Static: 8.90' @ 10:20 <br /> 0 <br /> Sample Blow n. Depth Borehole <br /> No. PID Count m (ft) Lithology Log Completion <br /> Cn <br /> CL - Gravelly CLAY, dark brown 10YR5/8, low plasticity, med. to <br /> crs. sand, tank pit backfill, firm, damp. <br /> 15.6 push <br /> ®s 5 <br /> SP - SAND gray (weak stain and petroleum odor) f. sand 95%, <br /> massive, loose, damp, old UST backfill? <br /> B-'"2 67 push <br /> CL -Sandy CLAY, light olive brown 2.5Y5/4, low plasticity, <br /> ®10 p f. sand 30%, dissem., contains thin sand bed, firm, damp. <br /> 10 <br /> Rods wet at 12 feet. <br /> B-1-31 9 push 1 5 SP - SAND, olive 5Y4/3, f. sand 95%, massive, dense, <br /> T1s6, saturated below 12 feet. <br /> Borehole flows at 19 to 20 feet, cannot advance direct push, <br /> no 20 rods locked, rig to auger to drill below 19 feet. <br /> sample <br /> B-1-4 NR push No sample at 21 feet due to flow, contact indicated at 21 to <br /> ®Zz' 23 feet by drilling resistance. <br /> ML - Clayey SILT with Sand, yellowish brown 10YR5/6, slight <br /> 1-5 25 low plasticity, f. sand 20%, crudely bedded, no stain or odor, <br /> 02s 0 push stiff, damp. <br /> Bottom of Boring = 26.5 feet <br /> Reviewed by RG/CEG <br />