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SECOR
<br /> Intema'wnalIncorporated
<br /> Logged By Date Dnlled 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(in) Elev(ft) 37 1 FIRST Depth(ft) wt(lbs) Dist(in)
<br /> classifications and laboratory 8 640 140 30
<br /> testing methods
<br /> Q wO
<br /> o .]
<br /> ConsYtrulctton Descnption Q
<br /> Concrete
<br /> River rock,cobble size,rounded rocks and sand
<br /> 5
<br /> SILTY SAND (SM)dark yellowish brown(10YR4/4),fine-grained sand,
<br /> loose to medium dense,dam,no petroleum odor(0,65,30,5)
<br /> to— SILTY SAND (SM)olive brown(2 5Y4/3),fine-grained sand,medium 0 SB 1
<br /> dense,damp,oxidation in root casts,no odor(0,55,35,10) 910,
<br /> GROUT
<br /> SILTY SAND with CLAY (SM) light olive brown(2 5Y5/3),fine-grained
<br /> sand low plasticity, medium dense moist no odor 0 40 35 25
<br /> 15 CLAYEY SILT with SAND(ML)fine-grained sand,low plasticity,very stiff, 0 SBI
<br /> slightly moist,no odor,samll pieces of fractured rock<10%(0,20,45,35) @ 15'
<br /> No recovery
<br /> SANDY SILT(ML) olive brown(2 5Y4/3),fine-grained sand,low
<br /> plasticity,very stiff,damp to slightly moist,minor clay-10%,no odor SBI
<br /> 20 D 35 55 10 @20'
<br /> SAND (SP): light yellowish brown(2 5Y6/3),medium-gramed,dense,moist,
<br /> oorly graded,no odor D 95 5 0
<br /> SILTY SAND with CLAY(SM) fine-grained sand,low plasticity,medium
<br /> dense,damp,minor oxidized root casts,no odor(10YR4/3)
<br /> SANDY SILT with CLAY(ML) light olive brown(2 5Y513),very
<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
<br /> Figure (sheet 1 of 3)
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