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PROJECT: ROBERTS PROPERTY <br /> Vernalis, California Log of Boring No. SB-18 <br /> BORING LOCATION: GPS N:370 62.940';W: 121'28.625- ELEVATION AND DATUM: <br /> 7 - Not Surveyed- datum is round surface <br /> DRILLING CONTRACTOR: ResonantSOnic International DATE STARTED: DATE FINISHED: <br /> 8/12/03 8/12/03 <br /> - ,—. DRILLING METHOD: Sonic drilling TOTAL DEPTH(ft.): MEASURING POINT: <br /> ' 70.0 Ground surface <br /> DRILLING EQUIPMENT: ROtOSOniC rig114 FIRST COMPL. <br /> DEPTH TO WATER(ft.)132 5 I CO <br /> Ir� r SAMPLING METHOD: 5-foot Continuous Core System [5'x 3"] LOGGED BY: <br /> NA <br /> M. Goerz <br /> HAMMER WEIGHT: NA DROP: NA RESPONSIBLE PROFESSIOhIAL: I REG.NO. <br /> SAMPLES O Y. Hashimoto CH.G. 78 2 <br /> DESCRIPTION <br /> o j p E NAME(USCS): color,moist,%by wt.,plast.density,structure, REMARKS <br /> ow tt E i E ori O ' n cementation,read.w/HCI,geo.inter. <br /> N N m Sudace Elevation: Not surveyed <br /> AGGREGATEBASE <br /> 1 Global positioning system <br /> L ];; SANDY SILT(ML): brown (10YR 4/3),moist,60%fines,40% — (GPS)coordinates for <br /> i fine sand,nonplastic,soft _ boring location acquired <br /> ` 2 u using a hand-held <br /> Garmin' GPS-5 unit. <br /> ei- 3 <br /> OVM=Thermo <br /> ',_]_ 0 _ — Environmental <br /> t 4 Instruments 5808 PID <br /> calibrated with 100 ppm <br /> -�: — isobutylene standard. <br /> £` 5 <br /> 6 0 <br /> T70%fines,30%fine sand — <br /> Hand augered to 5 feet <br /> 7 — bgs. <br /> i 0 SILT with SAND(ML): dark greyish brown (10YR 4/2), moist, <br /> .].: 80%fines,20%fine sand,low plasticity,hard — <br /> 8 <br /> {:,: — <br /> o SANDY SILT(ML) brown (10YR 4/3),moist,60%fines,40% <br /> fine sand, nonplastic,firm <br /> 10 <br /> 0 — <br /> 11 <br /> 12 <br /> o� — <br /> § 13 T hard <br /> 1 14 <br /> " 15 <br /> 51.�s <br /> 0AKe0REV(REV.0100) <br /> Geomatrix Consultants project No.sOi 1.007 page 1 of 5 <br /> l ea <br /> } <br />