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6 <br /> S E C 0 R <br /> Logged By Date Drilled Drilling Contractor Project Name Method/Equipment Well Number <br /> CASCADE CHEVRON#!1001621 HOLLOW STEM AUGER <br /> FG 12/11/03 DRILLING BANTA,CA SPLITSPOON MW-68A <br /> Boring Surface Groundwater Depth(ft) Total Drive Drop <br /> Diam(in) Elev(ft) S� 8 5 FIRST Depth(ft) wt(lbs) Dist(in) <br /> 7 1925 415 140 30 <br /> O <br /> Well z <br /> s 3 Description 4 a <br /> ConstructionCori <br /> c> ° <br /> (IOYR 514), 80-90%fine-grained sand,poorly graded, <br /> —X ]0 10-20%low plastic fines,wet,slight hydrocarbon odor 5 2 JST-2J 1130 <br /> Backfill 12 Sample <br /> Boring 14 sent to <br /> 26'-415' lab <br /> w/Pel Plug <br /> High Yield <br /> Bentonite <br /> Pellets 3/8" <br /> TR30(4 30 10 Same as above,trace medium-coarse grained sand,no 0 7 JST-3C 1140 <br /> buckets) t0 hydrocarbon odor Sampl <br /> (hydrated) 10 sent to <br /> lab <br /> 35 <br /> SANDY CLAY(CL) yellowish brown(10YR 5/6), <br /> 30-40%fine-grained sand,wet,stiff,60-70%medium <br /> plastic fines,no hydrocarbon odor <br /> 40 6 CLAY w/SAND(CL) brown(10YR 5/3), 10-20%fine 0 4 JST-4C 1215 <br /> 12 grained sand,wet,stiff, 80-90%medium plastic fines,no SampI <br /> 14 h drocarbon odor sentto <br /> lab <br /> Boring Terminated at 41 5'BGS <br /> 45 <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 11621 18 0550 Date 1/15/2004 DWR Log of Well <br /> 1621MW68A GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet 2 of 2) <br />