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SECOR
<br /> Internattonal Incorporated
<br /> Logged By Date Drilled Drilling Contractor Project Name Method/Equipment Boring Number
<br /> • CASCADE TOSCO 8671 HOLLOW STEM AUGER
<br /> DH 12/12/01 DRILLING STOCKTON,CA CONTINUOUS CORE SB.1
<br /> See"Legend to Logs'for Boring Surface Groundwater Depth(ft} Total Drive Drop
<br /> sampling method, Diam(m) Elev(ft) 37 1 FIRST Depth(ft) wt(lbs) Dist(in)
<br /> classifications and laboratory
<br /> te8 640 140 30
<br /> !aging-methods methods
<br /> O
<br /> Well
<br /> p
<br /> Construction Desch tion
<br /> a Q6 a d
<br /> fine-grained sand,low plasticity,very stiff,damp,no odor(0,30,50,20) 112 SBI
<br /> 925'
<br /> Same as above,decreasing clay—5-10%,mottled with light gray(2 5Y7/2) 132 SBI
<br /> streaks within matrix,no odor(0,40,50,10) @28'
<br /> 30SILTY SAND(SM) brown(10YR4/3),fine-grained sand,dense,moist, 37 SBI
<br /> mottled as above,slight petroleum odor(0,50,40,10) @30'
<br /> Same as above,with minor pieces of fractured rock<1 5-2em,oxidization
<br /> around rock pieces,very slight odor
<br /> 2 SBI
<br /> 35 SANDY SILT with CLAY(ML) brown(10YR4/3),fine-grained sand,very @35'
<br /> small rock]fragments,low plasticity,slightly moist,no odor(0,20,65,15)
<br /> GROUT 2 S131
<br /> @38'
<br /> Same as above,very moist to wet,capillary fringe mottled with light gray
<br /> (2 5Y7/2),streaks,no odor
<br /> 40
<br /> 0 SB1
<br /> @ 40'
<br /> Same as above
<br /> SILTY SAND (SM) dark yellowish brown(10YR3/4),fine-grained sand,
<br /> dense,wet,poorly graded,no odor(0,60,35,5)
<br /> 45 SAND(SP) dark grayish brown(2 5Y4/2),fine-to medium-grained,dense, 0 SBI
<br /> wet,moderately graded,no odor(),90,10,0) @45'
<br /> Same as above,oxidized within sand grains
<br /> SAND(SP) olive brown(2 5Y4/4),medium-to coarse-grained,dense,wet,
<br /> moderately graded,no odor(0,95,5,0)
<br /> The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or
<br /> samples obtained during drilling Predominant material types shown on the log may contain different materials and the change from
<br /> one predominant material type to another could be different than indicated Descriptions on this log apply only at the specific location
<br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times
<br /> Project No 077 43791 222 Date 12/31/01 PR Log of Boring
<br /> 8671 SB 1 GPJ Approved by
<br /> LOG OF BOREHOLE Figure (sheet 2 Of 3)
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