Laserfiche WebLink
Wright Environmental Services, Inc. Tracy, CA Exploratory Boring Log <br /> Project No.4529 BORING No.MW-4 Drilling Method:8"Holiowstern Page 1 of i <br /> Logged by: CMP Date:t=ab 2,2009 80REMOLE COMPLETION; <br /> Client:City of Tracy Well Installed:2'dia.Sch.40 PVC <br /> Localiom Boyd Service Center Total Depth:26.5' Casing Depth:25' <br /> 560 N.Tracy Blvd.,Tracy Screen Length:15' Slot 5tze:0.020 <br /> Permit:SJG EHD 55563 Blank Length: 10' Sand Pack:#3 <br /> Water Levels:1st Enc: 14'?@ 14:37 Static: 13.5'@ 15:48 Top Sand Pack;8' Top Bentonite:6' <br /> .2 Grout Grout Seel:6'to Surface Vault Box <br /> ix <br /> Sample PID Blow E Well Detail/ <br /> No. /OV Count u)Deplh Llthology Lag Backfill <br /> Asphalt Pavemen <br /> 7 CL-Silty CLAY,very dark gray 10YR3/1,law plasticity fines up to 90%,v.f.sand <br /> M <10%.massive,stiff,damp <br /> c <br /> L <br /> MW-4-1 5 ML-Clayey SILT,brown 10YR5/3,slight plasticity,v.f.sand 10%,massive,soft, <br /> @ 5' 0 2 damp;rootholes and/or rare burrows locally present,inc.sand to 30%at 6.5 feet. <br /> MW-4-2 10- <br /> @ 10' 0 4 <br /> ML-Sandy SILT,yellow brown 10YR5/4,slight plasticity tines,vf.sand 20%,massive, <br /> 0 iron oxidation mollies,soft,damp. <br /> MW-4-3 15 <br /> @ 15' 0 2 <br /> SP-SM_SAND to Silty SAND,yellow brown 10YR5/4,slight plasticity fines 5-20% <br /> vf,to f.sand 80-95%,loose,saturated. <br /> MW-4-4 20 <br /> @ 20' 0 2 Same as above,Silt and Silty Sand interbeds at 20 to 21 feet,soft,saturated_ <br /> MW-4-5 25 Lost sample,re-drive to 26.5 feet, <br /> @ 25' 0 4 <br /> I <br /> ML-Clayey SILT,yellowish brown 10YR514,law plasti <br /> sand<10%,faint bedding,soft,damp. <br /> 1e <br /> tto 0 ng, e <br /> driller sw ca lu to T pler hole. <br /> e , <br /> Reviewed by PG <br />