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SECOR <br /> International Incorporated <br /> =EG <br /> Date Drilled: Drilling Contractor Project Name: Method/Equipment: Well Number: <br /> GREGG CHEVRON"-0557 DRIVE SAMPLER <br /> • 2/19/02 DRILLING STOCKTON,CA HOLLOW STEM AUGER OS-2S/2D <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> sampling method, Diam.(in.): Elev.(ft.): Q 32 Depth(ft.): wt.(Ibs.): Dist.(m.): <br /> classifications and laboratory <br /> testing methods 8 11.75 45.0 140 30 <br /> a <br /> w o <br /> Well <br /> .ff x 3 Description <br /> Construction 0 <br /> I � — <br /> SEAL 12 CLAYEY SILT(OL):dark gray(5Y4/1),low plasticity,moist,medium stiff,slight <br /> 18 _ petroleum odor(0,0,70,30). <br /> SAND 32 — <br /> OZONE <br /> 30 <br /> 42 CLAY(CL):very dark gray(3N-GLEY1),low plasticity, moist, very stiff, <br /> BENTONI 30 petroleum odor(0,0,5,95). <br />' SEAL 30 <br />' 35 <br /> 8 SILTY CLAY(CL):dark bluish gray(4158-GLEY2),low plasticity,moist,medium <br />' 16 stiff,strong petroleum odor(0,0,35,65). <br /> 20 <br /> i <br /> 40 18 <br /> 18 <br /> SAND 20 <br />' OZONE <br /> 5 <br /> 45 cedes to medium plasticity,wet soft 0 0 30 70 . <br /> r 6 <br /> 12 <br /> r <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 ecific locatio <br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times. D G <br /> scow ° <br /> . Project No. 77CH.43445.00.0370Date 8/6/02 PR Log Z[r 11SCOTTABLE GAN <br /> 5570S2.GP7 Figure � 4 No. 636 • <br /> LOG OF BOREHOLE <br /> OP CAV <br /> r <br />