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Wright Environmental Services, Inc. Exploratory Boring Log
<br /> Project No. 4889 BORING NO,IAWNES-1 Drilling Method:Hollowstem Page 1 of 1
<br /> Logged by- CMP Date:October 16,2009 BOREHOLE COMPLETION:
<br /> Client:City 0 Tracy Waste Water Treatment Plant Well Installed;2'din, Sch 40 PVC
<br /> Location:3930 Holly Drive,Tracy,CA Total Depth: 26' Casing Depth:25'
<br /> Screen Length:1V Slot Size:0.020
<br /> Permit:SJC EMD 55560 Blank Length: 10' Sand Pack:2112
<br /> Water Leve13:1st Enc:13'®09:25 Static:15,6'rising @ 11;00 Top Sand Pad(:8' Top Bentonits:6'
<br /> Grout Seal:6'to surface Vault Box
<br /> Sample PID BlowDepth Well Detail/
<br /> No. /OV Count 'I Lithology Log Backfill
<br /> Road Base Gravel Fit
<br /> wwA
<br /> w w
<br /> A w w n
<br /> w'•A A••A
<br /> SM-Silty SAND,yellowish brown 10YR5J6,slight plasticity fines 40%,
<br /> n"A A
<br /> �/�/���
<br /> f.sand 60%.,.masslve,damp,loose.
<br /> MMES-1 S
<br /> 6.5' - 8 AAA wAw
<br /> ML-CL-Sandy SILT to Sandy CLAY,dark grayish brown 10YR4/4,slight to low
<br /> plasticity fines,silt/day to 6000,#.sand 40%,taint bedding,rare caliche,
<br /> Arm to loose,damp.
<br /> MA WES- _ $ 10 Same as above,less sand to 25°A,slight Increase in plasticity of tines,tirm,damp to
<br /> 37.5' moist,thin Bendy bed at 11 feet.
<br /> SC-CL-Interbedded Clayey SAND and Sandy CLAY,grayish brown 10YR51.2,
<br /> M, WWES-1 15 Clayey Sand 70%f,stand and 30%clay;Sandy Clay 70%clay and 30%sand,
<br /> 6
<br /> Q 16.5' massive nvarail,fiirm to loose,saturated yields water slowly.
<br /> MWWES-1 20 Same as above,clayey bed at 20-21 feet Is moist to saturated,loose to soft,
<br /> 20.5" 3 saturated overall
<br /> Same as above,Increase in sitticlay.
<br /> MWWES _ 6 25
<br /> 26 CL-Sandy CLAY,brown 10YR4J3,low plasticity fines,silticlay 759'0,f.sand 25%.
<br /> massive to very falntty bedded,soft,moist to saturated,Increasing sand at 26 feet,
<br /> Bottom of Boring=26 feet,
<br /> native clay plug swabbed
<br /> into the sampler hole,
<br /> Reviewed by PG
<br />
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