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Project: ARCO Station # 2168 <br /> F Location: 441 West Charter LU of]Extraction way,Stockton,CA g action WeWSparge Well: <br /> Project Number: 38466562 <br /> Drilling Contractor: Woodward DrillingMEW-5/SP-5 <br /> Drilling Method: Hollow Stem Auger <br /> Dates Drilled: 11/4/05 Borehole Name: EW.S/SP-5 <br /> Well Construction Date: 11/4!05 <br /> Borehole Diameter: 10-inchLogged By: Scott Lookingbill,R.C. <br /> Casing Diameter: EW-2-inch;SR 1-inch <br /> Type: SCT'80 PVC Checked By: Vern Elarth,R.G. <br /> Total Depth Drilled: 39 fest <br /> Comments: Screen Interval; 8W-15-25';SP-31-33' <br /> Slot Size: 0.020-inch Sampling Method: CA Modified Split Spoon <br /> �+ <br /> .. > <br /> w <br /> U V <br /> F -�~r _g <br /> � <br /> G � � Q. � r1r <br /> C7 <br /> x Sample ID LITHOLOGY I)ESCRIP['ION <br /> R WELL CONSTRUCTION <br /> Silty Clay(CL). Light reddish brown,stiff,low plasticity,no odor, <br /> moist. EW well secured with 0 <br /> L) pressure cap;SP well <br /> Q seared with stip cap <br /> pending system <br /> installation <br /> F5 <br /> 20 <br /> Neat Cement 5 <br /> 2-10 ft <br /> F1 <br /> 10 <br /> 22 Becomes light yellowish brown. <br /> F. Bentonite Seal 10 <br /> 10-12 ft ' <br /> Clayey Silt(ML). Light yellowish brown,slightly plastic,hard <br /> 15 sand,no odor,damp. trace ! <br /> 26 ;!,! <br /> t 15 <br /> i, <br /> EW-5 <br /> 20 :;:;€ 2-inch SCH 80 PVC, <br /> 0.020-inch Slot <br /> " l <br /> 30 EW-8.20 1130 Sand Silt t= ' : Screen IS-25 ft <br /> Y (1�). Olive brown,stiff,non-plastic,tract clay,slight ! ; #3 Filter Pack Sand20 <br /> 1 <br /> hYcarbon-like odor. I2-26 R <br /> Silty Clay(CI,)- Olive brown,hard,medium plastic,iron staining, <br /> 25 slight odor,wet. <br /> 25 <br /> 2 <br /> Bentonite Seal I� <br /> 3026-30 ft <br /> 23 <br /> •. SP-5 'u <br /> 30 i <br /> Sandy Silt(ML). Bluish I-inch SCH g0 PVC, <br /> gray,stiff,low plasticity,root casts,slight 0.020 inch Slot <br /> hydrocarbon-fike odor. Screen 31-33 t <br /> Q #3 Filter Pack Sand <br /> 35 Silty Sand(SM). Bluish gray,very fine to fti <br /> 12 moderate hydrocarbon-like odor,saturated. ne grained medium dense, 30-33,5 ft <br /> v{ <br /> f 45 Bentonite Seal 35 <br /> 10 33.5-39 ft <br /> 40 <br /> Clay(CL). Bluish gray,hard,medium plastic,slight odor. I <br /> f <br /> i <br /> UM2870 Gateway Oaks Dr.,Ste Mo <br /> Sac,a nento,CA 95833 <br /> 916-679-2000 <br />