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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. 10/17/03 Cascade Drilling Stockton,California Casing Hammer OS-13B
<br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop
<br /> Diam.(in.): Elev.(ft.): SZ 13 First Water Depth(ft.): wt.(lbs.): Dist.(in.):
<br /> 8 37.0 140 30
<br /> 0
<br /> Well 0
<br /> Construction a Description
<br /> Ca a Ca
<br /> Traffic Rated SILTY SAND(SM):brown(I OYR 5/3),fine grained sand,medium dense,damp,
<br /> Well Box (0,80,20).
<br /> ELASTIC SILT(MH):dark grayish brown(IOYR 4/2),fine grained sand,stiff,
<br /> damp,moderate plasticity,(0,10,90).
<br /> a,
<br /> g FAT CLAY(CH):dark gray(2.5Y 4/1),very stiff,moist,high plasticity, (0,0,100). 0
<br /> As above,increased silt content,faint hydrocarbon odor,(0,0,100).
<br /> 3/4"SCH.80 6
<br /> PVC
<br /> 10 FAT CLAY WITH SAND(CH).dark greenish gray(IOY 4/1),fine grained sand, 34
<br /> Grout stiff,moist,high plasticity,faint hydrocarbon odor,(0,20,80).
<br /> Q
<br /> SANDY ELASTIC SILT(MH):dark greenish gray(5GY 3/1),fine grained sand,
<br /> 15 stiff,moist to wet,medium plasticity,strong hydrocarbon odor,(0,30,70).
<br /> a, v
<br /> 8788
<br /> (over
<br /> range)
<br /> FAT CLAY(CH):dark greenish gray(5GY 4/1),very stiff,moist,high plasticity,
<br /> strong hydrocarbon odor,(0,0,100). 8881
<br /> (over
<br /> range)
<br /> 20 FAT CLAY WITH SAND(CH):dark greenish gray(10GY 4/1),fine grained sand,
<br /> very stiff,moist,high plasticity,moderate to strong hydrocarbon odor,(0,20,80). 427
<br /> ---------------- -------------------
<br /> SANDY ELASTIC SILT(MH):dark greenish gray(5GY 4/1),fine grained sand,
<br /> very stiff,moist to wet,moderate plasticity,moderate hydrocarbon odor,(0,30,70).
<br /> 219
<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 1B-l6B.GPJ Figure
<br /> LOG OF BOREHOLE
<br /> (sheet 1 of 2)
<br />
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