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PROJECT: ROBERTS PROPERTY Log of Boring No. SB-10 <br /> Vernalis, California <br /> BORING LOCATION. GPS; N 37°37.728', W 121° 17.183' ELEVATION AND DATUM. <br /> Not surveyed: datum is ground surface <br /> DRILLING CONTRACTOR: Gregg Drilling &Testing, Inc. DATE STARTED. DATE FINISHED: <br /> 6/21/02 5121102 <br /> POINT- <br /> DRILLING METHOD: Hollow-stem auger TOTAL DEPTH(ft.): MEASURING POINT. <br /> 10.5 Ground surface _ <br /> `DRILLING EQUIPMENT: Mobil B-61 DEPTH TO WATER(ft.) FIRST j COMPL. <br /> NA I NA <br /> SAMPLING METHOD! Modified California drive sampler[18"x 2.5"1 LOGGED BY: <br /> M. Goerz <br /> w RESPONSIBLE PROFESSIONAL- REG. NO- <br /> G_WIwIGFiT: 140 lbs DROP 30 in. G. Foote RG 5044 <br /> SAMPLES 0 DESCRIPTION <br /> y .r ? NAME(USCS): color, moist,%try wt.,plast.density,structure. f2EMARKS <br /> CL a o a 3 7 Q cementation, react.wIHCI,geo.inter. <br /> wale mZ6 E o g O w <br /> sn •00 a LL <br /> Surface Elevation: Not surveyed <br /> SANDY SILT(ML): dark yellowish brown (10YR 414), moist, - <br /> j 700/6 fines, 30%,fine sand, nonplastic,firm(FILL] , <br /> 1 <br /> o fl f ❑VM= Thermo <br /> N - Environmental <br /> _ Instruments 580B PID <br /> 2 I E' 12 0 calibrated with 100 ppm <br /> isobutylene standard. <br /> 3 j - <br /> dark brown(7.5YR),60%fines.40%fine sand <br /> 4- <br /> 0 <br /> I <br /> 5, <br /> 28 p red brick fragments noted <br /> 6- <br /> 7- <br /> 8- <br /> 9 <br /> 78 9 - <br /> 6 192 dark greenish gray(5GY 411), 70%fines,30%fine sand,trace <br /> a fine gravel, strong odor <br /> 10 a w 27 183 Borehole destroyed using <br /> Bottom of baring at 10.5 feet - Type 1-II neat cement <br /> 11 _ grout placed from total <br /> depth to ground surface <br /> with a tremie pipe. <br /> 12 <br /> 13 - <br /> 14 - <br /> L <br /> 15 OMBOREV(rEv.you! <br /> Geomatrix Consultants Project No.5011.009 1 Page 1 of 1 <br />