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Project: ARCO Station # 2168 Log of Monitoring Well: <br /> Location: 441 West Charter Way,Stockton,CA Project Number: 384665627 MW-10 <br /> R <br /> Drilling Contractor: Woodward Drilling Drilling Method: Hollow Stem Auger Borehole Name: MW-10 <br /> Dates Drilled: 11/15/05 Well Construction Date: 11/15/05Lo ed B <br /> gg y: Scott Lookingbill,R.G. <br /> Borehole Diameter: 8-inch Casing Diameter: 2-inch Type: SCH 40 PVC Checked By: Vern Elarth,R.G. <br /> Total Depth Drilled: 32.5 feet Screen Interval: 17-32 feet Slot Size: 0.020-inch Sampling Method: CA Modified Split Spoon <br /> Comments: <br /> i U co <br /> x Sample ID ° F LrMOLOGY DESCRIPTION <br /> 0 WELL CONSTRUCTION <br /> Silty Clay(CL). light yellowish brown,hard,low plasticity,no odor, 8 inch flush mount 0 <br /> damp• traffic grade vault box <br /> U <br /> Well secured with 2 <br /> inch locking pressure <br /> > cap <br /> 5 0.0 <br /> 50/6 <br /> 5 <br /> Neat cement from <br /> near surface to 12 ft <br /> Silt(NL). Light yellowish brown,non plastic,very hard,no odor,dry <br /> 10- <br /> 0 to damp. <br /> 50/6 0.0 <br /> 10 <br /> Bentonite Seal <br /> 12-15 ft <br /> 15 50/6 0.0 Trace sand,damp. <br /> 15 <br /> Clayey Silt(ML).,Light olive brown,stiff,minor very fine grained <br /> sand,no odor,moist. <br /> 20 2.7 <br /> >< 23 MW-10-20 0826 20 <br /> 25— = N fw-10 <br /> 4.5 2-inch SCH 40 PVC, <br /> 20 0.020-inch Slot -25 <br /> }; Screen 17-32 ft <br /> #3 Filter Pack Sand <br /> 15-32.5 ft <br /> Silty Clay(CL). Greenish gray,hard,medium plasticity,slight <br /> hydrocarbon-like odor,saturated. <br /> 30—M0.0 <br /> 16 30 <br /> is y: <br /> �y <br /> 2870 Gateway Oaks Dr.,Ste 300 <br /> Sacramento,CA 95833 <br /> 916-679-2000 �' <br />