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SECQR <br /> International Jncorporated <br /> Logged By Date Drilled: Drilling Contractor Project Name: Method/F,gwpment: Well Nwnber: <br /> '- Hollow Stem Auger <br /> B.Miller 3/31/04 Cascade Drilling 139 S.Center St.,Stockton,Ca CM&75 MW-16 <br /> EM=ry <br /> Boring Surface Groundwater Depth(ti.): Total DrivDrc <br /> e <br /> Diam(ia): Elev((L): Y 25.5 First Encountered �P�(R) wt([bs): D> )i $ 30.0 140 30 <br /> Well Detailsa c Description 3 <br /> a � <br /> 12-inch Soil Surface <br /> Katlic rated <br /> well box. <br /> Location was vacuum cleared to 8'2'bgs on 3/29/2004. <br /> 5 SANDY CLAY(CL):Brown(7.5YR 4/2);65-75%high plasticity fines; --- <br /> 25-35%fine to coarse-grained well graded sand;areas of black staining;damp; <br /> no hydrocarbon odor. <br /> 2"Sch.40 <br /> PVC Set In <br /> Portland <br /> Cement 10- <br /> 315 1.5 <br /> Note:Driller reports hard drilling at 13'bgs. <br /> SILTY SAND(SNI):Yellowish brown(1 OYR 5/4);3545%low plasticity <br /> 15 fines;55-65%fine to medium-grained sand;damp;no hydrocarbon odor. 515 0.5 <br /> Hydrated <br /> Bentonite <br /> Chips <br /> #2/16 Sand <br /> 20 <br /> SANDY CLAY(CL):Brown(I OYR 4/3);75-85%high plasticity fines; 2/5 0.3 <br /> 0.01"Slotted 15-25%,Avit graded sand;damp;no hydrocarbon odor. <br /> 2"Sch.40 <br /> PVC Screen <br /> SILTY SAND(SM):Brown(1 OYR 4/3);20-30%non-plastic fines;70-80% <br /> fine-grained sand;trace iron-oxide staining;damp to moist;no hydrocarbon <br /> 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 differemt 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 1%12rcb/Apr112064 Log of Well <br /> CH90557.GPJ Appn:-w-od by <br /> LOG OF BOREHOLE <br /> Figure 16 (sheet 1 of 2) <br />