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Project: ARCO Station #5450 Log of Monitoring Well: <br /> Location: 1617 Fremont Ave.,Stockton,CA Project Number: 38465965 MW-3 <br /> Dates Drilled: 8128102 Total Depth Drilled: 26.5 ft bgs Logged By: S.Lookingbill <br /> LlaiWng Contractor: PC Exploration Borehole Diameter: 8-inch Checked By: V.Elarth <br /> LMWRig'Fype: B-40 Well Construction Dates: 8128/02 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 /> p o <br /> w o. o ist w � <br /> g ° > E3 <br /> to <br /> LITHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> 0 Asphalt/Road base gravel. Flush Mount Christy Box 0 <br /> Silty Clay(CL). Dark yellow browntd <br /> e 2-inch SCH 40 PVC with <br /> sand,damp,no odor. Increasing salocking pressure cap to 8'bgs <br /> with depth. <br /> Neat Cement to 5'bgs <br /> g Silty Sand(SM). Light olive brownned, 5 <br /> 0.0 12 poorly sorted,damp,no odor. <br /> Sandy Silt(ML). Dark yellow brown,soft,moist, <br /> no odor. 5-7'Bentonite Seal <br /> Sandy Clay(CL). Dark reddish brown,fine sand, <br /> iron oxide staining,stiff,damp,no odor. <br /> 10 0.0 23 14 <br /> 15 <br /> 0.0 28 Sandy Clay(CL). Olive brown,fine sand,iron 8-23'2-inch SCH 40 PVC, 15 <br /> oxide staining,stiff,damp,no odor. ': 4.010-inch Slot Screen, Filter <br /> Pack#2/12 Sand <br /> 3 <br /> 20 0.0 Sandy Clay(CL). Olive brown,fine sand,iron 20 <br /> oxide staining,stiff,saturated,no odor. <br /> 250.4 Silty Clay(CL). Olive brown,trace sand,stiff, \\\\• 25 <br /> saturated,no odors, \-\\\- Total Depth of Boring 26.5' <br /> - - bgs <br /> 2870 Gateway Oaks Dr.,Ste 300 <br /> Swratwnto.CA 95833 <br /> 916-679-2000 <br />