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6
<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. 10/20/03 Cascade Drilling Stockton,California Casing Hammer OS-12B
<br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop
<br /> Diam.(in.): Elev.(ft.): SL 11 First Water Depth(ft.): wt.(Ibs.): Digt.(in.):
<br /> 8 39.0 140 30
<br /> Well
<br /> d a
<br /> Construction a Description �-
<br /> a' a Q
<br /> ti
<br /> Traffic Rated SILTY SAND(SM):brown(IOYR 5/3),fine grained sand,medium dense,damp,
<br /> Well Box (0,80,20).
<br /> ELASTIC SILT(NIH):dark grayish brown(IOYR 4/2),fine grained sand,stiff,
<br /> damp,moderate plasticity,(0,10,90).
<br /> V. 0
<br /> $ FAT CLAY(CH):very dark gray(IOYR 3/1),very stiff,moist,high plasticity,
<br /> (0,0,100).
<br /> 0
<br /> b' 0
<br /> 3/4"SCH.80
<br /> PVC
<br /> FAT CLAY WITH SAND(CH):dark gray(5Y 4/1),fine grained sand,stiff,moist,
<br /> e'. -,.'Grout Grout IO high plasticity,(0,20,80). 4
<br /> Q
<br /> SANDY ELASTIC SILT(MH):dark greenish gray(l0Y 4/1),fine grained sand,
<br /> stiff,moist to wet,moderate plasticity,moderate to strong hydrocarbon odor,(0,30,70). 118
<br /> 218
<br /> 1$
<br /> o. o
<br /> ----------------------------------------
<br /> FAT CLAY(CH):dark greenish gray(IOY 4/1),very stiff,moist,high plasticity,
<br /> + moderate hydrocarbon odor,(0,0,100). 487
<br /> SILTY SAND(SM):dark greenish gray(5GY 4/1),fine grained sand,medium
<br /> dense,wet,moderate hydrocarbon odor,(0,80,20). 256
<br /> 20
<br /> ----------------------------------------
<br /> SANDY ELASTIC SILT(MH):dark greenish gray(5GY 4/1),fine grained sand,
<br /> stiff,moist to wet,moderate plasticity,moderate hydrocarbon odor,(0,30,70). 154
<br /> FAT CLAY(CH):dark greenish gray(LOGY 4/1),fine grained sand,stiff,moist, 136
<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 I B-16B.GPJ Figure
<br /> LOG OF BOREHOLE
<br /> (sheet I of 2)
<br />
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