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YMright Environmental S\--,rices, Inc., CA exploratory Boring Log <br /> Project No.4509 BORING NO. MW-1 Drilling Method: 8"Hollowstem Page 1 of 1 <br /> Logged by: CMP Date: Dec. 11,2008 BOREHOLE COMPLETION: <br /> Client: City of Tracy Well Installed:2"dia. Sch.40 PVC <br /> Location:99 W.6th Street Total Depth:26.5' Casing Depth:25.5' <br /> Tracy, CA Screen Length: 15' Slot Size: 0.020 <br /> Permit: SJC EHD 55561 Blank Length: 10' Sand Pack:#3 <br /> Water Levels: 1st Enc: 13-14'@0850 Static: no measurement Top Sand Pack: 8.5' Top Bentonite: 6.5' <br /> y Grout Seal:6.5'to surface Vault Box <br /> Sample RID Blow <br /> No. /OV Count Depth Well Detail/ <br /> Lithology Log Backfill <br /> Asphalt <br /> a� SW-SAND Fill,damp <br /> CU <br /> ML-Sandy SILT,yellowish brown 10YR5/6, slight plasticity,v.f. sand 20%, <br /> MW-1 5 crude bedding, firm,damp_ <br /> @ 5, 0 7 <br /> MW-1 10 <br /> @ 11.5' 0 10 ML-Sandy SILT, brown 10YR5/3,veru slightly plastic,f.-med. sand 35-40%, <br /> rare crs. sand, massive, stiff, damp. <br /> MW-1 15 <br /> @ 16.5' 0 23 <br /> SW-SAND,gray 10YR5/1,f.-crs. sand 95%,fines 5%, massive, dense, <br /> saturated; rare fine gravel. <br /> MW-1 20 <br /> @ 21.5 0 35 Borehole flows 6 feet,fine to crs Sand and fine Gravel, dense, saturated. <br /> Driller calls change at 22 feet. <br /> SM-Silty SAND,yellow brown 10YR5/6, nonplastic fines vary 5-20%, f. sand <br /> MW-1 25 80-95%, masive,loose, saturated; slight flowing. <br /> @ 26.5' 0 7 <br /> Bottom of Boring=26.6 feet <br /> clay plug swabbed into sample hole. <br /> Reviewed by PG <br />