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Wright Environmental Se►._ces, Inc. Tracy, Ca <br /> Fa. oratory Boring Log <br /> Project No.4529 BORING NO. MW-3 Drilling Method: 8"Hollowstem Page 1 of 1 <br /> BOREHOLE COMPLETION: <br /> Logged by: CMP Date:Feb 2,2009 Well Installed:2"dia.Sch.40 PVC <br /> Client:City of Tracy Total Depth:26.5' Casing Depth:25' <br /> Location:Boyd Service Center Screen Length: 15' Slot Size:0.020 <br /> 560 N.Tracy Blvd.,Tracy Blank Length: 10' Sand Pack:#3 <br /> Permit:SJC EHD 55563 Top Sand Pack:8' Top Bentonite:6' <br /> Water Levels: 1st Enc: 14-15'?@ 09:15 Static: 14.5'@ 09:30 Grout Seal:6'to Surface Vault Box <br /> ¢d Well Detail/ <br /> Sample PID Blow to Depth Llthoiogy Log Backfill <br /> No. /Ov Count m <br /> F7I <br /> � n nA <br /> t Pavement <br /> a� <br /> ML-Sandy SILT,brownish yellow 10YR616,slight plasticity,f.sand 30%,soft to firm, <br /> damp.ca <br /> c <br /> MW-3-1 5 <br /> @ 5, 0.6 4 Same as above,soft to firm,damp. <br /> MW-3-2 10 <br /> @ 10, 2.5 5 Same as above,sand 20-25%, massive,soft to firm,damp to moist at 10.5 feet. <br /> MW-3-3 0 15 <br /> @ 15' 17 2 <br /> SC-SP-Clayey SAND to SAND,gray 10YR511 with stains, 15%fines slightly plastic, <br /> f.sand 85%, massive,loose, saturated by 15 feet;thin Clayey Sand bed at 16.5 feet <br /> stained gray. <br /> MW-3-4 20 <br /> @ 20' 5 4 ML-Clayey SILT,yellowish brown 10YR514,low plasticity,v.f.sand 10%,crudely <br /> bedded,soft, moist. <br /> SC-Clayey SAND,yellowish brown 10YR5I4,low plasticity fines 20%,f.sand 80%, <br /> massive, soft,saturated;may contain thin silt beds. <br /> M W-3-525 <br /> @ 25' 2 push ML-Sandy SILT,yellowish brown 10YR5/6,slight plasticity fineslsilt 70%, <br /> f.sand 30-35%, massive,soft,very moist. <br /> Bottom of Boring=26.5 feet <br /> driller swabs clay plug into SPT sampler hole. <br /> Reviewed by PG <br />