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Date Start/Finish: 05/17/2012 Latitude: 37.6729986 Well ID: B_Z <br /> Drilling Company: Greg Drilling&Testing Inc. Longitude: -122.0858501 Chevron <br /> Driller's Name: Casing Elevation: NA Client: Environmental <br /> Drilling Method: Direct push/Sonic <br /> Total Depth: 78 ft bgs 898 A Street <br /> Mito Rotary Drill Rig Location: <br /> Rig Type: Hayward,CA <br /> Sampling Method: 6.5 inch Core Barrel Logged By: Loretta Kwong <br /> Reviewed By: Jacob Henry,P.G. Project Number: 80047298.2012.00003 <br /> E <br /> n <br /> n c <br /> U E <br /> wCo <br /> O <br /> E 3 g o Lithologic Description Well Construction <br /> > U <br /> a y = U o <br /> O <br /> U.1 `�° (D a 0 (7 <br /> zo <br /> A n n <br /> B-2-S-20' 0.1 AAAAn <br /> @0820 4' AAAAn <br /> AAAAn <br /> nAAAA <br /> AAAAA, <br /> 29 AAAAn <br /> A A A A A' <br /> A A A A A; <br /> At 23'bgs to 23.5'bgs AAAAA <br /> Gravelly SILT(ML)with some sand,moist,low plasticity,dense,fine to AAAAA <br /> medium-grained gravel,sub-angular to sub-rounded,dark yellowish ^A <br /> brown(10YR 4/4),(30,25,45,0) -A <br /> 25 `R <br /> A <br /> a <br /> 2.6At 26'bgs to 27.5'bgs <br /> 1.5' SAA,increased gravel and decreased sand,(40,15,45,0) ^n�nA <br /> AAAAA <br /> AAAAA <br /> A. AA <br /> An <br /> 30 Boring grouted <br /> from total depth <br /> to the ground <br /> surface <br /> 3.6 GM 32.5'ft bgs to 35'bgs <br /> 13-2-S-32.5' Silty GRAVEL(GM)with trace sand,dry,dense,fine to medium-grained <br /> @0835 gravel(<25n),sub-angular to sub-rounded,dark yellowish brown <br /> (10YR 4/4),(70,10,20,0) <br /> 2.5' <br /> 2.7 <br /> 35 <br /> At 39'bgs to 41.5'bgs <br /> SAA <br /> 40 <br /> Remarks: bgs=below ground surface;NA=Not Applicable/Available;AMSL=Above Mean Sea <br /> Level. <br /> ARCADIS Hand auger to 1l bgs. <br /> Direct push to total depth. <br /> Wra5fructurr :tiara fn�aorxrpw tia,korgs Horizontal Datum=NAD 83 <br /> Vertical Datum=NAVD 88 <br /> Project: 60047298.2012.00003 Page:2 of 4 <br /> Data File:bonng Geoprobe 2007 analytical USCS-GEMCOR C1-1.dat Date: 6/22/2012 Data Entry by: Sheida Kalbassi <br />