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<br /> S ECOR
<br /> Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: well Number:
<br /> STTC-Ozone Well Install Air Rotary
<br /> C.M. 10/16/03 Cascade Drilling Stockton,California Casing Hammer OS-16B
<br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop
<br /> Diam.(in.): Elev.(ft.): 1Z 14.5 First Water Depth(ft.): wt.(Ibs.): Dist.(in.):
<br /> 8 41.5 140 30
<br /> i= w
<br /> >
<br /> Well °
<br /> a Z W
<br /> •5 x 3 Description w
<br /> Construction o P ca a P
<br /> a �
<br /> Traffic Rated SILTY SAND(SM):brown(10YR 5/3),fine grained
<br /> Well Box sand,medium dense,damp,(0,80,20).
<br /> ELASTIC SILT(MH):dark grayish brown(1 OYR 4/2),
<br /> 9 Q: fine grained sand,stiff,damp,moderate plasticity,(0,10,90).
<br /> g FAT CLAY(CH):dark grayish brown(2.5Y 4/2),very 0
<br /> stiff,damp,high plasticity,(0,0,100).
<br /> C b'
<br /> 3/4"SCH.80
<br /> PVC
<br /> Grout 10 6 As above,dark greenish gray(10Y 4/1),stiff,moist,faint 53
<br /> 10 1hydrocarbon odor. 10.5' 1030
<br /> 17 ELASTIC SILT WITH SAND(MH):dark greenish gray 1199
<br /> (IOY 4/1),fine grained sand,very stiff to hard,moist,
<br /> moderate plasticity,moderate hydrocarbon odor,(0,25,75).
<br /> Q
<br /> 15 10 As above,dark greenish gray(5GY 3/1),very stiff,moist to 6660 15' 1050
<br /> 16 wet,separate phase hydrocarbon sheen,strong hydrocarbon 6285
<br /> 27 odor.
<br /> FAT CLAY(CH):dark greenish gray(IOGY 4/1),hard, (over
<br /> moist,high plasticity,strong hydrocarbon odor,(0,0,100). range)
<br /> 20 12 SANDY ELASTIC SILT(MH):dark greenish gray(5GY 3030 20' 1100
<br /> 22 3/1),fine grained sand,very stiff,moist to wet,medium
<br /> 50 lasticity,strong hydrocarbon odor, 0 30 70 .
<br /> @4" FAT CLAY WITH SAND(CH):greenish gray(LOGY
<br /> 511),fine grained sand,hard,moist,partially cemented by
<br /> caliche,high plasticity,strong hydrocarbon odor,(0,20,80).
<br /> Driller reports silt prior to 25'sample.
<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. 770T.43673.06.0007 Date 11/19/04 Log of Well
<br /> OS 1 B-16B.GPJ Figure
<br /> LOG OF BOREHOLE
<br /> (sheet 1 of 2)
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