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a <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-2 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): V 6.5 First Depth(ft.): wt.(Ibs.): Dist.(in.): <br /> 4-6 —25 MSL T 7.2 Static 9.5 <br /> Well g <br /> Description cu E <br /> Construction A .; <br /> a <br /> Concrete 2'Concrete Surface <br /> Surface <br /> Portland <br /> a..Cement <br /> CLAYEY SAND(SC):brown(7.5YR 4/2),30-40% <br /> medium-plasticity fines,60-70%fine-grained sand,trace <br /> medium-coarse grained sand,moderate strong brown(7.5 4/6) <br /> iron-oxide staining,moist,no hydrocarbon odor. <br /> e; a. <br /> 5 <br /> Q <br /> 1 1.4 S13-2 1010 <br /> -6' <br /> Bentonite <br /> Chips CLAYEY SAND(SC):dark brown(5Y 4/1),40-50%plastic fines, 114 <br /> 50-60%fine-grained sand,moderate very dark gray(GLEY 13/1) <br /> 10 tdrocarbon <br /> ssible product staining throughout,wet,moderate to strong <br /> odor. <br /> BORING TERMINATED AT 9.5 FEET <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 l of 1) <br />