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' Light, Air and Space Construction, San Jose, CA Exploratory Boring Log , <br /> Project No. 0616 BORING NO. MW-1 Drilling Method: 8" Hollowstem Page 1 of 1 <br /> tLogged 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: 21' <br /> Manteca, CA Screen Length: 10' Slot Size: 0.020 <br /> ' Permit: SJC EHD 0055577 Blank Length: 11' Sand Pack:#3 <br /> Water Levels: 1st Enc 15'@ 08:55 Static: 11.8'@ 09:06 rising Top Sand Pack: 9' Top Bentonite: 8' ' <br /> Grout Seal: 8'to Surface vault box TOC 16.62'MSL <br /> m <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, very weakly cemented, <br /> ' f.-med, sand 30%, firm hard. <br /> ' 5 SM-Silty SAND, light grayish brown 2.5Y6/2, nonplastic,f. <br /> med. sand 60%, <br /> M ' <br /> @ 5,1 4 silt 40%, locally slightly cemented, loose, moist; inc. sand to 80%, contains <br /> 10-inch thick silt interbed at 9 feet. <br /> 1 ' <br /> MW-1-1 j,. 0 <br /> t @ 10' - 9 :... <br /> ML-SM-Interbedded Sandy SILT and Silty SAND, light grayish brown 2.5Y6/2, , <br /> ML-slighlty plastic clay<10%; SM- sand f. to med. up to 80%, locally 90%, <br /> ' and moist to saturated by 15', medium dense, moist to saturated. ' <br /> MW-1-1 15 <br /> @ 15' - 16 : ' Same as above,very thin siill beds, medium dense, saturated. <br /> ' Incerease in sand, micaceous, medium dense, saturated; sand becomes f. to ' <br /> ars, then transition from 20 to 21 feet to underlying stratum. <br /> ' <br /> MW-1-1 20 ' <br /> @ 20' 16 <br /> ML-Clayey SILT,alive brown 2.5Y4/4, slightly plastic, silt/clay fines 75%, <br /> f. sand 25%, possible caliche, stiff, damp. <br /> MW-1-1 20 <br /> ' @ 21.5' <br /> ' Bottom of Baring =23 feet, slight flowing <br /> swab clay plug into sampler hole. <br /> ' Reviewed by PG ' <br />