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_ i <br /> PROJECT: ROBERTS PROPERTY <br /> Vernalis, California Log of Boring NO. SB-20 <br /> -�� o o ELEVATION AND DATUM: <br /> BORING LOCATION: GPS N:37 62.903'.W. 121 28.532' Not surveyed;datum is qround surface <br /> ^. <br /> DRILLING CONTRACTOR: ResonantSonlc International DATE STARTED: DATE FINISHED: <br /> J 8/14/03 8/14/03 <br /> DRILLING METHOD: Sonic drilling TOTAL DEPTH(ft.): MEASURING POINT: <br /> 80.0 Ground surface <br /> DRILLING EQUIPMENT: ROtosonlc rig 114 DEPTH TO WATER(ft.)I FIRS INA PL <br /> L.� 0.0 <br /> SAMPLING.METHOD: 5400t continuous Core system[5'x 3°] LOGGED BY: <br /> M. Goerz <br /> RESPONSIBLE PROFESSIONAL: REG.NO. <br /> HAMMER WEIGHT: NA DROP: NA <br /> SAMPLES DESCRIPTION <br /> Y. Hashimoto CH.G. 782 <br /> (7 <br /> w m m N ? E NAME(USCS): color,moist,%by wt.,plast.density,structure, REMARKS <br /> O� E z o E 3o g p � a cementation,react.w/HCI,geo.inter. <br /> N N m ct Surface Elevation: Not surveyed <br /> AGGREGATE BASE <br /> 1 Global positioning system <br /> ; .. — (GPS)coordinates for <br /> _ boring location acquired <br /> 0 SANDY SILT(ML): brown (10YR 4/3),moist,60%fines,40% using a hand-held <br /> ll2 fine sand,nonplastic,soft — Garminru GPS-5 unit. <br /> J r : <br /> OVM=Thermo <br /> — Environmental <br /> .t 4 _ Instruments 580B PID <br /> calibrated with 100 ppm <br /> isobutylene standard. <br /> ._ F 5 _ <br /> 1. 0 <br /> J is 6 <br /> Hand augered to 5 feet <br /> T70%fines,30%fine sand b s. <br /> 7 _ <br /> 0 <br /> m. SILT with SAND(ML): brown (10YR 4/3),moist,80%fines, <br /> 8 20%fine sand,low plasticity,hard — <br /> 1. — <br /> {:._ 9 <br /> ]' i — <br /> 10 SANDY SILT(ML) brown (10YR 4/3),moist,70%fines, 30% <br /> 0 fine sand,nonplastic,firm — <br /> ," 11 _ <br /> 12 T hard <br /> — <br /> 13 <br /> 0 — <br /> 14 <br /> — <br /> f' y 15 OAKSOREV(REV.V0-) <br /> nT <br /> Geomatrix Consultants Project No.501 LOOt page 1 of 5 <br /> %s <br />