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Project: ARCO Station # 2168 Log of Extraction Well/Sparge Well: <br /> Location: 441 West Charter Way,Stockton,CA Project Number: 38466562 EW-6/SP-6 <br /> r <br /> Drilling Contractor: Woodward Drilling Drilling Method: Hollow Stem Auger Borehole Name: EW-6/SP-6 <br /> F <br /> Dates Drilled: 11/10/05 Well Construction Date: 11/10/05 Logged By: Scott Lookingbill,R.G. <br /> Borehole Diameter: 10-inch Casing Diameter: EW-2-inch;SP-1-inch Type: SCH 80 PVC Checked By: Vem Elarth,R.G. <br /> Total Depth Drilled: 37 feet Screen Interval: EW-15-25%SP-31-33' Slot Size: 0.020-inch Sampling Method: CA Modified Split Spoon <br /> Comments: <br /> tQd <br /> Sample ID f' LrFHOLOGY DESCRUMON WELL CONSTRUCTION <br /> 0 o Silty Clay(CL). Light reddish brown,hard,low plasticity,no odor, EW well secured with 0 <br /> damp- pressure cap;SP well <br /> secured with slip cap <br /> U pending system <br /> installation <br /> 5 <br /> i 5 <br /> t25 Neat Cement <br /> 2-10 ft <br /> 1Q <br /> Becomes light yellowish brown. 10 <br /> 31 Bentonite Seal <br /> 10-12 ft <br /> X. <br /> Clayey Silt(ML). Light yellowish brown,soft,low plasticity,no odor, _' <br /> moist. <br /> LS <br /> 14 <br /> 15 <br /> EW 6 <br /> Sandy Silt(W). Yellowish brown,fnm non plastic,no odor,moist. 2 inch SCH 80 PVC, <br /> 0.020-inch Slot <br /> Screen 15-25 ft <br /> 60 EW-&20 1340 ::::! #3 Filter Pack Sand <br /> V. <br /> 12-26 ft <br /> ol <br /> Clay(CL). Olive brown,hard,medium plasticity,moderate <br /> hydrocarbon-like odor,damp, <br /> 25 <br /> 62 25 <br /> Bentonite Sea] <br /> 26-30 ft <br /> 30—X <br /> 17 Becomes olive gay. SP-6 30 <br /> 1-inch SCl/90 PVC, <br /> U. inch Slot <br /> Screen 31-33 ft <br /> #3 Filter Pack Sand <br /> I 5z 30-34 ft <br /> II iSiltSd(SM), Blih Bentonite Seal 35 <br />' <br /> 34-3 <br /> 4 1: <br /> 35 1E 30 7 ft <br /> f <br /> E , <br /> I <br /> 2670 Gateway Oaks Dr.,Ste 300 <br /> F Sacramento,CA 95633 <br /> 916-679-2000 <br />