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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. 10/21/03 Cascade Drilling Stockton,California Casing OS- 9B
<br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop
<br /> Diam.(in.): Elev.(ft.): SZ 13 First Water Depth(ft.): wt.(Ibs.): Dist.(in.):
<br /> 8 40.0 140 30
<br /> Well
<br /> Construction Description �
<br /> a
<br /> Traffic Rated SILTY SAND(SM):dark greenish gray(IOGY 3/1),fine grained sand,medium
<br /> Well Box dense,wet,moderate to strong hydrocarbon odor,(0,75,25).
<br /> ELASTIC SILT(MH):dark gray(5Y 4/1),fine grained sand,stiff,moist,high
<br /> o. o.
<br /> plasticity,strong hydrocarbon odor,(0,5,95).
<br /> 5 FAT CLAY(CH):dark gray(5Y 4/1),very stiff,moist,high plasticity,moderate to
<br /> strong hydrocarbon odor,(0,0,100).
<br /> 3/4"SCH.80
<br /> PVC
<br /> 10 Grout As above,stiff,abundant caliche nodules.
<br /> �..
<br /> 2
<br /> FAT CLAY(CH):dark greenish gray(IOGY 4/1),fine grained sand,very stiff,
<br /> moist,high plasticity,moderate hydrocarbon odor,(0,10,90).
<br /> 62
<br /> SANDY ELASTIC SILT(MH):dark greenish gray(5GY 4/1),fine grained sand,
<br /> stiff,moist to wet,medium plasticity,moderate hydrocarbon odor,(0,30,70). 190
<br /> 15 As above,moderate to strong odor.
<br /> brb ————— -----------------------------
<br /> FAT CLAY(CH):dark greenish gray(5G 4/1),very stiff,moist,high plasticity, 177
<br /> moderate hydrocarbon odor,(0,0,100).
<br /> ----------------------------------------
<br /> 20 SILTY SAND(SM):dark greenish gray(5GY 4/1),fine grained sand,medium
<br /> dense,wet,faint hydrocarbon odor,(0,70,30).
<br /> FAT CLAY WITH SAND(CH):brown(IOYR 5/3),fine grained sand,very stiff,
<br /> moist,high plasticity,(0,20,80). 3
<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)
<br />
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