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Project: ARCO Station #5450 Log of Monitoring Well: <br /> Location: 1617 Fremont Ave.,Stockton, CA Project Number: 38465965 MW-2 <br /> Dates Drilled: 8128/02 Total Depth Drilled: 26.5 ft bgs Logged By: S.Lookingbill <br /> Drilling Contractor: PC Exploration Borehole Diameter: 8-inch Checked By: V.Elarth <br /> ig Type: B-40 Well Construction Dates: 8128102 Screen Slot Size: 0.010-inch <br /> Drilling Method: Hollow Stem Auger Well Diameter: 2-inch <br /> Drill Bit: 8-inch Hollow Stem Auger Type of Well Casing: SCH 40 PVC <br /> Comments: <br /> n > F� u <br /> _� �s <br /> LLt7 LITHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> 0 Flush Mount Christ <br /> AsphaldRoad base gravel. y Box 0 <br /> Silty Clay(CL). Yellow brown,trace sand, <br /> damp,no odor. 2-inch SCH 40 PVC with <br /> locking pressure cap to 9'bgs <br /> Neat Cement to 6'bgs <br /> 5 0.0 10 Silty Sand(SM). Yellow brown,fine grained, 5 <br /> moist,no odor. <br /> Sandy Clay(CL). Dark yellow brown,moist, <br /> trace gravel,damp,no odor. <br /> IM 6-8'Bentonite Seal <br /> 14 0.0 27 Becomes dark brown. 10 <br /> 15 Fat Clay(CH). Light yellow brown,soft,wet,no 15 <br /> 0.0 22 odor. 9-242-inch SCH 40 PVC, <br /> i 0.010-inch Slat Screen, Filter <br /> Silty Clay(CL). Yellow brown,stiff,saturated, pack#2112 Sand <br /> no odor. <br /> 20 0.0 25 Silty Clay(CL). Yellow brown,high plasticity, 20 <br /> soft,grading to stiff,saturated,no odor. <br /> 25 Silty Clay(CL). Olive brown,iron oxide staining, `:' :i:i 2S <br /> 0.0 18 high plasticity,soft,grading to stiff,saturated,no <br /> odor. \-\-\- - Total Depth of Boring 26.5' <br /> • ���\ <br /> b g s <br /> 2870 Gateway Oaks Dr.,Ste 300 <br /> Sactatnenta,CA 95833 <br /> 9,6-679-2000 <br />