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Project: ARCO Station # 2168 Log of Extraction Well/Sparge Well: <br /> Location: 441 West Charter Way,Stockton,CA -Project Number38466562 EW-17/SP-17 <br /> Drilling Contractor: Woodward Drilling Drilling Method: [-fallow Stem Auger Borehole Name: EW-17/SP-17 <br /> Dates Dolled: 11/15/45 Wel]Construction Date: 11115/05 Logged By: Scott Lookinghill,R.G. <br /> I` _ Borehole Diameter: 10-inch Casing Diameter: EW-2-inch;SP-3-inch Type: SCH 80 PVC Checked By: Vern Elarth,R.G. <br /> Total Depth Drilled: 41 feet Screen Interval: EW-15-25%SP-36-38' Slot Size: 0.020-inch Sampling Method: CA Modified Split Spoon <br /> Comments: <br /> r-b <br /> k ' <br /> f ; <br /> A G <br /> _ tm <br /> ar�i O <br /> 5 v 8 E <br /> � � •u P. q o n ai <br /> Sample ID A, E v LITHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> 0 EW well secured with 0 <br /> .,y Clayey Silt(ML). Light ye0owish brown,stiff,nan-plastic,no odor, <br /> dry to damp, pressure cap;SP well <br /> secured with slip cap <br /> U pending system <br /> 9 installation <br /> > <br /> 5 5 <br /> 24 0.0 Neat Cement <br /> 2-10 ft <br /> Silt(ML). Pale brown,hard,non plastic,no odor,dry. <br /> 10 <br /> 10 <br /> 5016 0.0 Bentonite Seal <br /> 10-12 ft <br /> ` Yellowish brown,stiff,non plastic,trace sand,no odor,damp. -=i <br /> 15- <br /> 5;;; 15 <br /> _Z 27 0.0 <br /> ;4 EW-17 <br /> ;3:. 2-inch SCH 80 PVC, <br /> 20 Sandy Silt(ML). Yellowish brown,hard,40%very fine grained sand, _ ; 0. <br /> odor, <br /> Slat <br /> Screen 15-25 ft <br /> no odor,moist. #3 Filter Pack Sand 20 <br /> 24 EW-17-20 0.0 1305 12-26 ft <br /> Clay(CL). Olive brown,hard,high plasticity,no odor. <br /> 25 <br /> 22 0.0 <br /> 30— <br /> Becomes bluish green,slight hydrocarbon-like odor, Bentonile Seal 30 <br /> 15 0.7 26.35 ft <br />` 35 Silty Clay(CL). Bluish gray,stiff,medium plasticity,moderate <br /> 4 hydrocarbon-like odor,moist. SP-17 35 <br /> 0.8 1-inch SCH 80 PVC, <br /> 17 0.020-inch Slot <br /> 22 <br /> Screen 36-38 ft <br /> #3 Filter Pack Sand <br /> 40 Clayey Silt(ML). Bluish gray,hard,law plasticity,slight hydrocarbon- <br /> 35-38.5 ft <br /> 12 like odor,moist. Bentonite Seal <br /> 40—M0.0 38.5-41 ft 40 <br /> 2l <br /> r <br /> 2870 Gateway Oaks Dr.,Ste 300 <br /> Ss<reurato,CA 95833 <br /> 916-679-2000 <br />