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IN <br /> tLight, Air and Space Construction, San Jose, CA Exploratory Boring Log ' <br /> Project No. 0616 BORING NO. MW-2 Drilling Method: 8"Hollowstem Page 1 of 1 <br /> Logged by: CMP Date: Oct. 7, 2008 BOREHOLE COMPLETION: <br /> ' Client: Dana Well Installed:2"dia. Sch. 40 PVC <br /> Location: 19589 McKinley Avenue Total Depth: 23' Casing Depth: 20.5' <br /> Manteca, CA Screen Length:12' Slot Size: #3 <br /> Permit: SJC EHD 0055577 Blank Length: 10' Sand Pack: 8' <br /> ' Water Levels: 1st Enc 11.5'@11:10 Static: 13.4' @ 11:35 rising Top Sand Pack: 9' Top Bentonite: 8' ' <br /> Grout Seal: 8'to surface vault box TOC 15.42 MSL <br /> d <br /> Sample PID Blow E Well Detail/ <br /> No. /OV Count m Depth Lithology Log Backfill <br /> ML- Sandy SILT, light gray 2.5Y7/2, nonplastic fines, silt 70%, f. sand 30%, <br /> weakly cemented to 2 feet, firm, damp. <br /> SM-Silty SAND, brown 10YR5/3, nonplastic fines 35%, f. to med. sand 65%, <br /> f <br /> MW-2-1 - 5 massive, loose, damp. t <br /> @ 5' 4 :i. <br /> ' MW-2-1 X7 0 <br /> @ 10, - 8 'r,. <br /> ML-SM-Clayey SILT to Silty SAND, brown 10YR513, slightly plastic i ' <br /> varies 20-65%, f. sand varies up to 65%, massive <br /> medium dense, moist, <br /> saturated by 11.5 feet; contains olive brown silt beds up to 8 inches thick. <br /> MW-2-1 15 ' <br /> ri: ML-SP-Clayey SILT and SAND interbedded, olive brown 2.5Y4/4, sand gray <br /> @ 15' 25 2.5YN5/, massive, medium dense and saturated; silt mottled with iron oxide. <br /> ' SP-SAND, gray 2.5N5/, f. to med. sand 95%,fines 5%, massive, silt increasing ' <br /> MW-2-1 20 with depth to 20%, medium dense to dense, saturated. <br /> ' @ 20' 28 i.: ' <br /> MW-3-1 _ 50 Z% <br /> @ 21.5' <br /> tBottom of Boring=23 feet, borehole ' <br /> ' Flows slightly, driller swabs clay plug ' <br /> into sampler hole. <br /> 1 ' <br /> Reviewed by PG , <br />