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i <br /> Wright Environmental Serf ..es, Inc. Tracy, CA Exp.riratory Boring Log <br /> Project No.4529 BORING NO.MW-1 Drilling Method: 8"Hollowstem Page 1 of 1 <br /> Logged by: CMP Date: Feb 3,2009 BOREHOLE COMPLETION: <br /> Client: City of Tracy Well Installed: 2"dia.Sch.40 PVC <br /> Location: Boyd Service Center Total Depth:26.5' Casing Depth: 25' <br /> 560 N.Tracy Blvd.,Tracy Screen Length: 15' Slot Size:0.020 <br /> Permit:SJC EHD 55563 Blank Length; 10' Sand Pack:#3 <br /> Water Levels: 1st Enc: 14'?@ 09:35 Static: 15'?rising @ 10:45 Top Sand Pack:8' Top Bentonite:6' <br /> m <br /> Grout Seal:V to Surface Vault Box <br /> CL <br /> Sample PID Blow E Well Detail! <br /> No. IOV Count u) Depth Lithology Log Backfill <br /> Asohalt Pavement <br /> 7 ML-Sandy Clayey SILT,stained gray, may contain fill(?), nonplastic to slightly h^ <br /> ro plastic fines,v.f.sand a10%firm,damp. <br /> c <br /> R <br /> L <br /> MW-1-1 5 ML-Sandy SILT,stained gray,slightly plastic fines 80%,v.f.sand 20%,firm. <br /> @ 5' 121 push damp. <br /> MW-1-2 10 <br /> @ 10' 82 5 <br /> CL-Sandy CLAY,stained gray,slighlt plasticity,v.f.sand 30%, massive,soft to firm, <br /> damp. <br /> v <br /> MW-1-3 15- <br /> @ 15' 45 2 Lost sample,sampler tip cuttings shows SC-Clayey SAND,stained gray,fines slighlty <br /> plastic,f.sand appears saturated, loose. <br /> Drill cuttings appear as SP-SAND from 15 to 20 feet;sheen on water. <br /> MW-1-4 20- <br /> @ 20, 26.7 4 <br /> Sandy CLAY,stained gray, low plasticity fines,v.f.sand 35%,massive, <br /> possible product in rootholes, loose,very moist. <br /> MW-1-5 25 SM-Silty SAND,brownish yellow, 10YR616, nonplastic fines 15%,v.f.sand 85%, <br /> @ 25' 5 5 massive, loose,saturated; contains thin silty interbeds that are nearly saturated_ <br /> Bottom of Boring=26.5 feet <br /> driller swabs clay plug into SPT sampler hole. <br /> Reviewed by PG <br />