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SECOR <br /> lnternationafIncorporated <br /> • Logged By; Date Drilled: Drilling Contractor Project Name: Method/Equipment: Well Number: <br /> Hollow Stem Auger <br /> B.Miller 4/1/04 Cascade Drilling 139 S.Center St.,Stockton,Ca CME-75 MW-15D <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft.): Tota] Drive Drop <br /> sampling method, Diam.(in.): Elev.(ft.): D <br /> classifications and laboratory 24.5 First Encountered Depth(ft,): wt.(1bs.): Dist.(in.): <br /> testin methods 10 51.0 140 30 <br /> Well Details A Description 0. <br /> x <br /> 12-inch Soil Surface <br /> traffic rated <br /> well box. <br /> Location was vacuum cleared to 87'bgs on 3/29/2004. <br /> 5 <br /> SILTY SAND(SM): Yellowish brown(1 OYR 5/4); 15-25%non-plastic fines; <br /> 4"Sch.40 75-85%fine-grained sand;trace iron-oxide staining;damp; loose;no <br /> PVC Set 0 hydrocarbon odor. <br /> Portland <br /> Cement 10- <br /> 2/5 <br /> ---------------------------------- <br /> SANDY CLAY(CLS): Pale brown(IOYR 6/3);75-85%high plasticity fines; <br /> 15-25%well graded sand;damp;very dense;no hydrocarbon odor. <br /> 15 <br /> 2/5 1.6 <br /> SANDY SILT(ML): Brown(10YR 5/3);75-85%low plasticity fines; <br /> 15-25%fine-grained sand;trace iron-oxide staining;damp;no hydrocarbon <br /> odor. <br /> 20 <br /> 5/5 1.3 <br /> SANDY CLAY(CLS): Dark greenish gray(Gleyl 4/10Y);75-85%high <br /> plasticity fines; 15-25%fine-grained sand; damp;slight hydrocarbon odor. <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.90557.04 Date March/April 2004 <br /> Log of Well <br /> CH90557.GPJ Approved by <br /> LOG OF BOREHOLE <br /> Figure 15 (sheet 1 of 3) <br />