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Cambria Environmental Technology, Inc BORING/WELL LOG
<br /> 1 144 - 65th 5t
<br /> Oakland, CA 94608
<br /> Telephone (510) 420-0700
<br /> Fax (510) 420-9170
<br /> CLIENT NAME BP Oil Company _ BORING/WELL NAME C13-1
<br /> J013/SITE NAME BP-11193 DRILLING STARTED 07-Oct-99
<br /> LOCATION 3202 West Hammer Lane,Stockton, California DRILLING COMPLETED 07-Oct-99
<br /> PROJECT NUMBER 852-1530 WELL DEVELOPMENT DATE(YIELD) NA
<br /> DRILLER Precision Sampling C-57 636387 _ GROUND SURFACE ELEVATION NA
<br /> DRILLING METHOD CPT TOP OF CASING ELEVATION NA
<br /> BORING DIAMETER 1 75" SCREENED INTERVAL NA
<br /> LOGGED BY J Riggs _ DEPTH TO WATER(First Encountered) 13 5 It 07-0 t-9
<br /> REVIEWED BY K Rahman RG DEPTH TO WATER(Static) 13 5 It(07-Oct-99) _
<br /> REMARKS Hand au ered to 5'b s boring is located 3'South from the center of the UST complex
<br /> U b a
<br /> E p Z a uj a o p LITHOLOGIC DESCRIPTION WELL DIAGRAM
<br /> D U ¢ X �� C7J U~
<br /> W m O W
<br /> 0 (n C]
<br /> CB-1 05
<br /> 5' FILL,grey,dry, 10%silt,40%sand,50%gravel,no 10
<br /> SW \plaslic V hlqh estimate�ermeabdit�fill
<br /> SAND, (SW), brown dry, 10%silt,90%sand _ _ 30
<br /> Silty Sandy CLAY,(CL),black,damp,50%clay,20%
<br /> CL silt,30%sand,medium plasticity,very low estimated
<br /> permeability_ _ _ _ _ _ _ _ _ _ _ _ 50
<br /> CB-1 5 Silty Clayey SAND, (SC),tan,damp,25%clay, 15%
<br /> 5 5' silt,60%fine to medium grained sand,no plasticity, law
<br /> estimated permeability
<br /> SC
<br /> • _ —_ _ _ _ _ _ _ _ _ _ _ _ 100
<br /> CB-1 ® 10 Clayey SAND,(SC),white to brown,damp, 15%clay,
<br /> 105, 5%silt,80%fine to medium grained sand,no plasticity,
<br /> Sc very high estimated permeability
<br /> 130
<br /> 14 CB-1 SAND., (SP),white to brown, 10%silt,90%fine to � 1
<br /> 13 medium grained sand,no plasticity,very high estimated
<br /> permeability, rounded and well sorted
<br /> 15 Portland Type
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<br /> CB-1 @ - SP Hydropunch groundwater sample collected from 16-17 It
<br /> 16-17' — bgs
<br /> _ _ _ _ _ _ _ _ _ _ _ _ _ 200
<br /> CB-1 @ 20 SiltY SAND,(SM) brawn,wet,20%silt,80%fine to
<br /> 20 coarse sand, no plasticity,high estimated permeability,
<br /> F� pyrite flecks
<br /> 5
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<br /> w
<br /> O
<br /> SM
<br /> CB-1 @ 25
<br /> 25
<br /> Z
<br /> -, _ _ _ _ _ _ _ _ _ _ _ _ _ _ 280
<br /> CB-1 @ SAND, (SP) brown,wet,5%silt, 95%fine to medium
<br /> 28 _ SP grained sand no plasticity,very high estimated
<br /> N CB-1 @ - permeability 300
<br /> 29-30' 30 Hydropunch groundwater sample collected from 29-30 ItBottom of
<br /> \bgs — Boring @ 30 It
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