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SECOR <br /> Intern4lionallnco orated <br /> • Lgged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: Well Number: <br /> Hollow Stem Auger <br /> B.Miller 411104 Cascade Drilling 139 S.Center St.,Stockton,Ca CME-75 MW-15D <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> sampling method. Diam.(in.): Elev.(ft.): SZ 24.5 First Encountered Depth(ft-): wt.(Ibs.): Dist.(in.): <br /> classifications and laboratory <br /> testin methods 10 51.0 140 30 <br /> Well Details Description <br /> A � o cC ate. <br /> 8 <br /> 5/5 6.7 <br /> 4"Sch.40 <br /> PVC Set In <br /> Portland <br /> Cement 30 SANDY CLAY(CL): Continues 4/5 9.6 <br /> i35 SANDY CLAY(CL): Continues 5/5 20.3 <br /> ------------------------------------ <br /> SILTY CLAY(CL): Dark greenish gray(Gleyl 4/l0Y);Iow plasticity fines; <br /> wet;strong hydrocarbon odor. <br /> 40- <br /> 4/5 109 <br /> Hydrated <br /> Bentonite <br /> Chips CLAYEY SILT(ML):Very dark greenish gray(Gleyl 3/5GY);non-plastic <br /> fines;moist to wet;strong hydrocarbon odor. <br /> #2/16 Sand as <br /> 4/5 193 <br /> 0.01"Slotted <br /> 4"Sch.40 <br /> PVC Screen SAND(SP): Greenish black(Gley] 2.5/5G);fine to medium-grained sand; <br /> wet;very strong hydrocarbon odor. <br /> 610 <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 Lo f <br /> g o Well <br /> CH90557.GPJ Approved by <br /> LOG OF BOREHOLE <br /> Figure 15 (sheet 2 of 3) <br />