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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 1 6/21/04 Cascade Drilling Tracy,California Hand Auger SB-3 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): 5Z 7.5 First Depth(ft.): wt.(Ibs.): Dist.(in.): <br /> 4-6 —25 MSL 1 7.6 Static 9.8 <br /> i; <br /> Well � 2 g <br /> Description A 0 <br /> Construction Q ?: a <br /> a <br /> a <br /> Concrete 2'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 1" <br /> e.. e.; Cement diameter,dry,no hydrocarbon odor. <br /> CLAYEY SAND(SC):olive brown(2.5Y 4/3);20-30% <br /> 5 medium-plasticity fines;70-80%fine-grained sand;abundant very <br /> dark gray(2.5Y 3/1)product staining;moist;strong petroleum <br /> hydrocarbon odor. <br /> �t 9.0 SB-3 1515 <br /> Bentonite -T <br /> Chips CLAY WITH SAND(CL):dark gray(5Y 4/1),85-95%medium <br /> plasticity fines,5-15%fine-grained sand;trace medium grained 79.4 <br /> 10 sand,wet,possible product staining throughout,strong hydrocarbon <br /> odor. <br /> 15- <br /> 20— <br /> The <br /> 520The 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 />