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Date Start/Finish: 05/17/2012 Latitude: 37.6729986 Well ID: B_2 <br /> Drilling Company: Greg Drilling&Testing Inc. Longitude: -122.0858501 Chevron <br /> Driller's Name: 9 <br /> Casin Elevation: NA Client: Environmental <br /> Drilling Method: Direct push/Sonic <br /> Total Depth: 78 ft bgs Location: 898 A Street <br /> Rig Type: Mito Rotary Drill Rig Hayward,CA <br /> Sampling Method: 6.5 inch Core Barrel Logged By: Loretta Kwong <br /> Reviewed By: Jacob Henry,P.G. Project Number: B0047298.2012.00003 <br /> E <br /> n <br /> n c <br /> U E <br /> w cc <br /> d a 0 <br /> E 3 o Lithologic Description Well Construction <br /> > o U <br /> o c o <br /> o U 0 <br /> LU ca � <br /> LU C� d U) (� <br /> AO <br /> B-2-S-40' 32 <br /> @0840 3.5' <br /> ML o Sandy SILT(ML)with trace clay, moist,low plasticity,stiff,medium- <br /> 2.8 grained sand,dark yellowish brown(10YR 4/4),no odor,(0,20,75,5) <br /> 45 <br /> At 45.5'bgs to 48'bgs <br /> 4.2 SAA,medium stiff <br /> 2.5' <br /> 3.7 <br /> sc Boring grouted <br /> from total depth <br /> to the ground <br /> surface <br /> B-2-S-52' 2.5 At 52'bgs to 53.5'bgs <br /> @0900 Sandy SILT(ML), moist,low plasticity,soft,fine to medium-grained <br /> 3.7 sand,dark yellowish brown(10YR 4/4),(0,25,75,0) <br /> At 53.5'bgs to 54.5'bgs <br /> 4' SAA,stiff <br /> 55 At 54.5'bgs to 56'bgs <br /> 2.3 SAA hard to very hard <br /> Q <br /> B-2-S-55.5' <br /> @0925 <br /> 5.0 <br /> At 58.5'bgs to 59'bgs <br /> 3.8 SAA,with trace gravel,soft,(10,20,70,0) <br /> 2 5' <br /> EO <br /> Remarks: bgs=below ground surface;NA=Not Applicable/Available;AMSL=Above Mean Sea <br /> Level. <br /> t Hand auger to 1l bgs. <br /> A R CA D I S <br /> Direct push to total depth. <br /> Horizontal Datum=NAD 83 <br /> Vertical Datum=NAVD 88 <br /> Project: B0047298.2012.00003 Page:3 of 4 <br /> Data File:boring Geoprobe 2007 analytical USCS-GEMCOR C1-1.dat Date: 6/22/2012 Data Entry by: Sheida Kalbassi <br />