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' S ECOR <br /> Logged7ByDate Drilled: Drilling ContractorProject Name: Method/Equipment: well NumbsCASCADE CHEVRON#1001621 HOLLOW STEM AUGER <br /> FG12/11/03 DRILLING BANTA,CA SPLITSPOON MW-68A <br /> ' Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): S1 8.5 FIRST Depth(ft.): wt.(lbs.): Dist.(in.): <br /> 7 19.25 41.5 140 30 <br /> Well ° <br /> Z <br /> Construction 0 o Description <br /> (10YR 5/4),80-90%fine-grained sand,poorly graded, <br /> Backfill 10 T 10-20%low plastic fines,wet,slight hydrocarbon odor. 5.2 STT11Boring 14 Sam26'-41.5' J. sentw/Pel Plug la <br /> High Yield <br /> Bentonite <br /> Pellets 3/8" 30 <br /> TR30(4 10 Same as above,trace medium-coarse grained sand,no 0.7 JST-3C 1140 <br /> buckets) 10 hydrocarbon odor. Sampl <br /> (hydrated) 10 <br /> sent to <br /> lab <br /> 35 <br /> SANDY CLAY(CL):yellowish brown(lOYR 5/6), <br /> 30-40%fine-grained sand,wet,stiff, 60-70%medium <br /> plastic fines,no hydrocarbon odor. <br /> 40 <br /> 6 CLAY w/SAND(CL): brown(lOYR 5/3), 10-20%fine 0.4 ST-4 1215 <br /> 12 grained sand,wet,stiff,80-90%medium plastic fines,no Sampl <br /> 14 h drocarbon odor. sent to <br /> lab <br /> Boring Terminated at 41.5'BGS. <br /> 45 <br /> The substrata descriptions p s 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.11621.18.0550 Date 1/15/2004 DWR Log of Well <br /> 1621MW68A.GPJ Figure <br /> Fi <br /> LOG OF BOREHOLE g <br /> (sheet 2 of 2) <br />