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Date Start/Finish: 1/6/09,1/16/09 Northing:N/A ell/Boring ID: SB-2 <br /> Drilling Company: Cascade Drilling,Inc. 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 /> .J 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 /> a o. <br /> a <br /> 0 m -- CL E <br /> Z w a m —o' Well/Boring <br /> O S CO <br /> Z v Stratigraphic Description Construction <br /> cc <br /> H > n a c 2 5 c <br /> w E E p <br /> UJI CU <br /> Fn w U) N of EL Q C7 <br /> iJ 105-105 <br /> 11 (108- 2.0 0.1 <br /> Brown SILTY CLAY(CL)with Gravel,moist,no odor. <br /> - �- <br /> 110) Brown Silt(ML),trace Sand,moist,no odor. <br /> .J 110-I10 <br /> 12 (113- N/A N/A Q Gravel(GW)with coarse Sand,moist,no odor. <br /> 115) O <br /> 115-115 <br /> u <br /> 120-120 (120- 0.0 N/A No recovery. <br /> ry' <br /> 125-125 <br /> U <br /> Portland <br /> 13 (128- 0.1 N/A - Cement/Bentonite, <br /> 130) — Brown SANDY SILT(ML),moist,no odor,poor recovery. (0-150'bgs) <br /> 130-130 <br /> u <br /> 14 (133- N/A 0.5 Brown SANDY SILT(ML),wet,no odor. <br /> 135-135 <br /> 135) Brown well graded SAND(SW),moist,no odor. <br /> u <br /> 15 (138- 0.0 N/A 140) No recovery. <br /> 190-190 <br /> 16 (143- N/A 0.5 <br /> 145) Brown SILTY CLAY(CL),trace Sand,dry,no odor. <br /> 195795 <br /> ,n <br /> u <br /> 17 (148- N/A 0.0 Brown SANDY SILT(Mdry,L),dno odor. <br /> 150) _ r' <br /> End of boring 150'bgs <br /> us <br /> u <br /> Remarks: bgs=below ground surface;N/A=Not Applicable/Available. <br /> Notes: <br /> � ���dS 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 /> !nhastrucrure,ervirorment, Facilities feet bgs to 130 bgs due to soil slumping. <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 /> lJ <br />