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{ <br /> Project: ARCO Station # 2168 Log of Monitoring Wen: <br /> i .Location: 441 West Charter Way,Stockton,CA Project Number: 38466562 MW-12 <br /> i <br /> t Drilling Contractor: Woodward Drilling Drilling Method: Hollow Stem Auger <br /> Borehole Name: MW-12 <br /> Dates Drilled: 11/15/05 Well Construction Date: 11/15/05 <br /> Logged By. Scott 1 ookingbill,R.G. <br /> Borehole Diameter: 8-inch <br /> Casing Diameter: 2-inch Type: SCH 40 PVC Checked By: Vern Earth,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 /> R G <br /> 1 <br /> $ 8 9 <br /> A oa n <br /> Sample ID °+ Ew {7 <br /> ZYMOLOGY DESCRIPTION WELL CONSTRUCTION <br /> D <br /> v Silty Clay(CL). Light yellowish brown,very hard,low plasticity,no 8-inch flush mount 0 <br /> wodor,dry to damp, traffic grade vault box <br /> U Well secured with 2- <br /> inch locking pressure <br /> cap <br /> 5 0.0 <br /> 5015 5 <br /> Neat cement from <br /> near surface to 12 ft <br /> Silt(ML). Light yellowish brown,very hard,non plastic,no odor,dry. <br /> 10 50/6 0.0 1 <br /> - 10 <br /> Bentonite Seal <br /> 15 0.012-15 k <br /> 32 Trace very Erne grained sand. 15 I <br /> k <br /> Clayey Silt(ML). Light yellowish brown,li m,low plasticity,white <br /> mottling,no odor,moist. <br /> 20 0.0 <br /> 18 MW-12-20 1010 20 <br /> i <br /> Silty Clay(CL). Light olive brown,hard,medium plasticity,slight MW-12 <br /> hydrocarbon-like odor,damp- 2-inch SCH 40 PVC, <br /> 25 27 1 5 0.020-inch Slot 25 <br /> Screen 17-32 tat <br /> #3 Filter pack Sand <br /> 15-325 ft <br /> i <br /> Clayey Silt(ML). light olive brown,trace sand,stiff,low plasticity, <br /> clay interbeds,slight hydrocarbon-like odor,moist, <br /> 30 0.0 <br /> 20 30 <br /> r <br /> Tul <br /> F <br /> t I <br /> I <br /> 2870 Gateway Oaks Dr.,Ste 300 <br /> Saera ro,CA 95833 <br /> 916-679-2000 <br />