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Project: ARCO Station # 2168 <br /> Location. 441 West Charter W Log of Monitorin Well: <br /> Way,Stockton,CA Project Number: 38466552 MW-9 g <br /> Drilling Contractor: Woodward Drilling Drilling Method: Hollow Stem Auger <br /> Borehole[Mame: mw-9s Dates Drilled: 11/15/05 Well Construction Date: 11/15/05 <br /> Logged By: Scott I.00kiugbill,R.G. <br /> Borehole Diameter: 8-inch Casing Diameter: 2-inch <br /> Type: SCH 40 PVC Checked By: Vern Efarth,R.G. <br /> F Total Depth Drilled: 32.5 feet Screen Interval: 17-32 feet <br /> Slot Size: 0.020-inch Sampling Method: CA Modified Split Spoon <br /> Comments: <br /> w - a 3 <br /> aru <br /> Sample ID a. E= LITHOLOGY DESCRIPTION <br /> 0 WELL CONSTRUCTION <br /> w Silt(ML). Yellowish brown,hard,non plastic,no odor,dry, 8-inch flush mount 0 <br /> traffic grade vault box <br /> V Well secured with 2- <br /> inch locking pressure <br /> F <br /> cap <br /> 5 <br /> 5016 0.0 <br /> 5 <br /> Neat cement from <br /> near surface to 12 ft <br /> 10 0.0 <br /> Becomes damp. <br /> 24 10 <br /> F. <br /> Bentonite Seal <br /> 15 12-15 ft <br /> ' 0.0 Becomes moist. <br /> 24 ]5 i <br /> Clayey Silt(Mi.). Yellowish brown,firm,low plasticity,no odor, <br /> moist. <br /> 20 0.0 <br /> 25 MW-9-20 1455 20 <br /> r Clay(CL). Olive brown,hard,high plasticity,slight hydrocarbon-like <br /> odor,damp. <br /> 25 0.4 ::: 2-inch SCH 40 PVC, <br /> 29 :-: 0.020-inch Slot 25 <br /> Screen 17-32 ft <br /> -:< #3 Filter Pack Sand <br /> 15-32.5 ft <br /> s � 30 0.7 <br /> Olive gray,slight hydrocarbon-like odor. 30 <br /> 31 <br /> t <br /> I <br /> t <br /> f <br /> 2870 Gateway Oaks Dr.,Ste 300 <br /> Sacramento,CA 95833 <br /> 916-674-2000 <br />