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Project: ARCO Station # 2168 Log of Extraction Well/Sparge ar <br /> Location: A41 West Charter Way,Stockton,CA Project Number: 38466562 P ge Well: <br /> EW-I/SP-1 <br /> Drilling Contractor: Woodward DrilqR9Drilling Method: Hallow Stem Auger BoreholeName: EW DatesDrilled: 1113105 Well Construction Date: 1113/05 <br /> Logged By: S.Lookinghill,R.G. <br /> Borehole Diameter: 10 inchasing Diameter: EW-2-inch;SP-1-inch e:Typ 5CH 80 PVC Checked By: Vete Elarth,R.G. <br /> tTotal Depth Drilled: 41 Feetcreen Interval: EW-15-25';SP-36-38' Slot Size: 0.020-inch Sampling Method: CA Modified Split Spoon <br /> Comments: <br /> o <br /> uo <br /> 0 Sample ID aL F C7 <br /> LrTHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> Clayey Silt(ML). Dark yellowish brown,soft,medium plasticity,trace JEW well secured with 0 <br /> Fsand,no odor,moist. pressure cap;SP well <br /> (, secured with slip cap <br /> Pending system <br /> installation <br /> 5 <br /> 10 5 i <br /> Neat Cement J <br /> 2-10 ft <br /> y Silty Clay(CL). Yellowish brown,firm,medium plasticity,no odor, <br /> damp <br /> 10 <br /> 29 110 t <br /> Bentonite Seal <br /> 10-12 ft <br /> Sandy Silt(MI.), YeJtowisb brown,soft,non-plastic,no odor,moist. ; <br /> r 5 <br /> 15 : <br /> F <br /> 16 15 <br /> Silt(ML)- Olive brown,soft,medium plasticity,no odor,moist. <br /> EW-1 <br /> ?: 2-inch SCM 80 PVC, <br /> 20 0.020-inch Slot <br /> Screen 15-25 ft 20 <br /> 23 EW-1-20 0950 ;;: #3 Filter Pack Sand <br /> _' 12-26 ft <br /> 25 <br /> 5016 Bluish-gray,hydrocarbon-like odor. 25 { <br /> Q <br /> Sandy Silt(ML). Bluish gray,firm,non-plastic,strong hydrocarbon- <br /> f like odor,saturated. Bentonite Seal <br /> 30— <br /> 26-33 k 30 <br /> F <br /> 35 r SP-1 <br /> 26 rl Clayey Silt(ML). Bluish gray,stiff,low plasticity, g 0 <br /> strop 1-inch SCA 80 PVC, 35 <br /> < <br /> 62 hydrocarbon-like odor,moist. .020-inch Slot <br /> Screen 36-36 ft <br /> 20 #3 Filter Pack Sand <br /> 33-39 ft <br /> 67 Moist to saturated. <br /> 4()_N 27 <br /> 52 <br /> Bentonite Seal <br /> 40 <br /> 39-41 ft <br /> 2970 Gateway Oaks Dr.,Ste 300 <br /> Swr�to•CA 95633 <br /> JRS916-1579-2000 <br />