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Date Start/Finish: 1/6/09, 1/16/09 Northing:N/A \ 3oring ID: SB-2 <br /> �+ Drilling Company: Cascade Drilling,Inc. ti""� Easting:N/A <br /> Driller's Name: Angel Rocha Casing Elevation: N/A Client: Chevron Environmental Management <br /> Drilling Method: Sonic,Mud Rotary Company <br /> Sampling Method: California Split Spoon Sampler Borehole Depth: 150'bgs Location: Chevron Service Station 309075 <br /> Rig Type: Sonic Surface Elevation: N/A 3978 South Highway 99 <br /> Stockton,California <br /> Descriptions By: A.Brown/B.Gerard <br /> r <br /> d o. <br /> a � <br /> ..r � CL E <br /> Z 5 w a o Well/Boring <br /> O Z Stratigraphic Description Construction <br /> cc <br /> > n n o = % o <br /> r W W CON cc <br /> a Q U <br /> D <br /> 105-105 <br /> �I <br /> Brown SILTY CLAY(CL)with Gravel,moist,no odor. <br /> 11 (108- 2.0 0.1 _ <br /> 110) Brown Silt(ML),trace Sand,moist,no odor. <br /> 110-110 <br /> V <br /> 12 (115 N/A N/A �O Gra I(GW)with coarse Sand,moist,no odor. <br /> e <br /> 115-115 <br /> sc Co- <br /> 120-120 (120- 0.0 N/A <br /> 125) No recovery. <br /> 125-125 <br /> V <br /> Portland <br /> Cement/Bentonite <br /> 13 (128- 0.1 N/A _ grown SANDY SILT(ML),moist,no odor,poor recovery. (0-150'bgs) <br /> 130) <br /> 130-130 <br /> V <br /> Brown SANDY SILT(ML),wet,no odor. <br /> 14 (133- N/A 0.5 <br /> 135) Brown well graded SAND(SW),moist,no odor. <br /> 135-135 <br /> v <br /> 15 (138- 0.0 N/A No recovery. <br /> 190-140 140) <br /> V <br /> 16 (143- N/A 0.5 Brown SILTY CLAY(CL),trace Sand,dry,no odor. <br /> 145) <br /> 145-145 <br /> iii <br /> 17150) <br /> (148- N/A 0.0 _ Brown SANDY SILT(ML),dry,no odor. <br /> End of boring 150'bgs <br /> r <br /> Remarks: bgs=below ground surface;N/A=Not Applicable/Available. <br /> r <br /> r ARCADIS Notes: <br /> The 115 feet bgs sample was collected but not submitted due to the presence of gravel. <br /> The 130 feet bgs sample was collected but not submitted;bentonite was added from 125 <br /> Infrastructure,environment facilities feet bgs to 130 bgs due to soil slumping. <br /> V <br /> Project: B0046012.0001 Template:Design-Rotosonic.ldfx Page:3 of 3 <br /> Data File:SB-2.dat Date:3/20/2009 K.Wynne <br />