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S ECOR <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.): SL 8,5 FIRST Depth(ft.): wt.(Ibs.): Dist.(in.): <br /> 7 19.25 41.5 140 30 <br /> o <br /> Well ° z <br /> Construction a o Description <br /> q <br /> Traffic Rated 3.5" Concrete slab with 1/2 inch steel rebar. <br /> Well Box Pea Gravel fill in former tank pit. <br /> 8" Steel <br /> Conductor ° <br /> Casing o <br /> 5 oO <br /> Hycrated ° <br /> Bentonite <br /> Chips °Q <br /> Q 18 O 660 1100 <br /> Bentonite 22 °p Pea Gravel fill in former tank pit;extreme hydrocarbon <br /> Pellets 10 00 odor,sheen&free product. <br /> 2"Diameter 3.7 JST-3f 1145 <br /> SCH 40 PVC SILTY SAND(SM):dark greenish gray(GLEY 4/5GY), 320 Sampli 1105 <br /> Casing 70-80%fine to medium grained sand,trace coarse sand, sent to <br /> wet,medium dense,20-30%;medium plastic fines;extreme lab <br /> #2/12 Sand hydrocarbon odor,sheen with free product. <br /> Pack <br /> 0.02" Screen 15 8 SANDY CLAY(CL):yellowish brown(IOYR 5/4), 9.6 1110 <br /> 8 <br /> 40-50%fine sand,wet,medium stiff to stiff,50-60% <br /> 10 medium plastic fines,slight hydrocarbon odor. <br /> SILTY SAND(SM):yellowish brown(10YR 5/6), <br /> 20 6 60-70%fine grained sand,wet,medium dense,30-40%low <br /> plastic fines,slight hydrocarbon odor. 20.2 1120 <br /> 8 <br /> 10 <br /> SAND TO SILTY SAND(SP-SM):yellowish brown <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 1 of 2) <br />