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6 <br /> S ECOR <br /> Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: Boring Number: <br /> Chevron Pipeline MP 9.90 VacTruck <br /> S.COLE 6/21/04 Cascade Drilling Tracy,California Hand Auger SB-1 <br /> Boring Surface Groundwater Depth(ft.): Total DriveP <br /> Diam.(in.): Elev.(ft.): SZ 7 First Depth(ft.): wt.(Ibs.): <br /> 4-6 —25 MSL 1 7.16 Static 10.0 <br /> Well " <br /> 3 <br /> Description q E <br /> Construction <br /> � A <br /> a con <br /> Concrete Concrete Surface <br /> Surface FILL:SAND with fines(SP):very dark brown(2.5Y 3/2),low to <br /> Portland medium plasticity fines,70-80%fine-grained sand,trace gravel to V <br /> A.: ;..Cement diameter,dry,no hydrocarbon odor. <br /> CLAYEY SAND(SC):brown(10YR 4/5),25-35%low to <br /> 5 medium-plasticity fines;65-75%fine-grained sand,trace iron-oxide <br /> staining;strong brown(7.5YR 5/6),moist to wet,no petroleum <br /> hydrocarbon odor. <br /> 4.5 SB-1 1155 <br /> -6.5' <br /> Bentonite <br /> Chips SANDY CLAY(CL):dark gray(5Y 4/1),70-80%low-medium 247 1220 <br /> plasticity fines,20-30%fine-grained sand,trace medium to coarse <br /> 10 grained sand;possible product staining throughout,wet,strong <br /> h drocarbon odor. <br /> BORING TERMINATED AT 10 FEET <br /> 15 <br /> 20 <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. 77CH.32792.00.0170 Date 6/21/04 Log of Boring <br /> SB 1-3.GPJ Figure <br /> LOG OF BOREHOLE <br /> SB-1 (sheet 1 of 1) <br />