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SECOR <br /> InlernarionalIncorporated <br /> Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: Well Number: <br /> * Hollow Stem Auger <br /> B.Miller 3/31104 Cascade Drilling 139 S.Center St.,Stockton,Ca CME-75 MW-16 <br /> See"Legend to Logs"for B <br /> oning Surface <br /> samplin method, Groundwater Depth(ft.): Total Drive Drop <br /> classifications and laboratory Elev.(ft.): -7 25.5 First Encountered Depth(ft.): wt.(Ibs.): Dist.(in.): <br /> testin methods 30.0 140 30 <br /> Well Details Description <br /> a <br /> o: <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 /> 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 /> ------------------------------------- <br /> SILTY SAND(SM): Yellowish brown(1 OYR 514);35-45%low plasticity <br /> 15 fines;55-65%fine to medium-grained sand;damp;no hydrocarbon odor. <br /> 5/5 0.5 <br /> Hydrated <br /> Bentonite <br /> Chips <br /> #2/16 Sand <br /> 20 <br /> SANDY CLAY(CL):Brown(1 OYR 4/3);75-85%high plasticity fines; 215 0.3 <br /> 0.01"Slotted 15-25%well graded sand;damp;no hydrocarbon odor. <br /> 2"Sch.40 <br /> PVC Screen <br /> SILTY SAND(SM): Brown(1 OYR 413);20-30%non-plastic fines;70-80% <br /> fine-grained sand;trace iron-oxide staining; damp to moist;no hydrocarbon <br /> El J <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 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.GP7 Approved by <br /> LOG OF BOREHOLE <br /> Figure 16 (sheet I of 2) <br />