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Project: ARCO Station # 4493 Log of Monitoring Well: <br /> Location.205 N Center Street,Stockton,CA Project Number 38466609 MW-12D <br /> Dates Drilled 12/5/03 Total Depth 81 feet Borehole Name SO-2 <br /> DrIlling Contractor Woodward Drilling Well Construction Date Logged By Jeff Brooks <br /> IlWole Diameter 8-mch Casing Diameter 2 inch Casing Type Sch 40/PVC Checked By Vern Elarth,RG <br /> Drilling Method Hollow Stem Auger Screen Interval 75 5-80 5 feet Slot Size 0 020 inches Sampling Method CA Modified Split spoon <br /> Comments Lithology from SECOR log B-1 (518100) 0-55 feet <br /> i <br /> y U co <br /> y y 2 <br /> O W ¢1 <br /> f1 <br /> Lir <br /> LITIiOLOGY DESCRIPTION WELL CONSTRUCTION <br /> B Planter Soil surface Flush mounted traffic rated 0 <br /> Vault box <br /> Silty Sand(SM) Dark yellowish brown fine grained sand Well secured with locking <br /> moi st <br /> pressure cap <br /> 5 Sandy Clay(CL) Dark olive brown very fine to fine grained 5 <br /> sand medium stiff <br /> Near surface to 70 feet Neat <br /> Cement <br /> 10 10 <br /> Silty Sand(SM) Dark brown fine to medium grained sand <br /> damp <br /> Silty Clay(CL) Gray,firm damp 2-inch SCH 40 PVC <br /> 15 Silty Sand(SM) Gray to grayish brown fine to medium grained 15 <br /> sand wet <br /> 20 20 <br /> First water at 20 feet Lithology coiifirmauon of B 1 <br /> from soil cuttings for interval <br /> 0-55 feet <br /> 25 25 <br /> Saturated <br /> = Static water level at 27 8 feet(9 00 am 12115103) <br /> 30-- <br /> 30 <br /> Sand(SP) Gray poorly graded,fine to medium grained <br /> saturated <br /> Clayey to Sandy Silt(ML) Gray fine grained sand medium <br /> 35 stiff moist to wet <br /> 35 <br /> 40 40 <br /> 0 Sand(SP) Gray poorly graded fine grained loose saturated <br /> 45 <br /> 2870 Gateway Oaks Dr Sie 300 <br /> Inc Sacramento CA 95833 <br /> 91&679 2000 <br />