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Worlm.rprises Log of Soil Vapor Well: <br /> Location: Turnpike Rd,Stockton,CA Project Number: 17325532 VW-7 <br /> Dates Drilled: 10/12/04 Total Depth: 20.5 feet bgs Borehole Name: VW-7 <br /> Drilling Contractor: Gregg Drilling Well Construction Date: 10/12/04 Logged By: Matt Farris <br /> Borehole Diameter: 8-inch Casing Diameter: 1-inch Casing Type: SCH 40 PVC Checked By: Vern Elarth R.G. <br /> Drilling Method: Hollow Stem Auger Screen Interval: 5-10 and 14-19ft Slot Size: 0.020-inch Sampling Method: CA Modified split spoon <br /> Comments: 75 feet East of VW-4 <br /> > o <br /> o <br /> U g .a <br /> a U <br /> pp!! a <br /> r C7 <br /> LITHOLOGY DESCRH'TION WELL CONSTRUCTION <br /> 0 Grass and topsoil. Y locking stove pipe 0 <br /> completion <br /> Sandy gravel fill. Well secured with gas <br /> measurement valve cap. <br /> Silty Sand(SM). Light grayish brown,very fine to fine grained Neat cement from surface to 3 <br /> sand,up to 40%silt,moist,medium dense. ft bgs <br /> 1-inch SCH 40 PVC to 5 ft <br /> bgs <br /> Bentonite seal 3-4 ft <br /> 16 0 <br /> 5-- <br /> 5 <br /> 1-inch SCH 40 PVC <br /> :;• 0.020-inch slot screen 5-10 ft <br /> Pea gravel 4-11 ft <br /> 12 0 <br /> 10__ Sandy Silt(ML). Grayish brown,non-plastic,up to 20%very 10 <br /> fine grained sand,micaceous,moist,stiff. <br /> Bentonite seal 11-13 ft <br /> 15 0 <br /> 15-- Clayey Sand(SC). Olive brown,very fine grained,25-35% 1-inch SCH 40 PVC 15 <br /> clay,micaceous,moist,medium dense. 0.020-inch slot screen 1419 ft <br /> Pea gravel 13-20.5 ft <br /> Sandy Clay(CL). Olive brown,non-plastic,trace coarse <br /> 16 0 grained sand,high dry strength,damp,stiff. <br /> 20 20 <br /> UM2870 Gateway Oaks Dr.,Ste 300 <br /> Sacramento,CA 95833 <br /> 916-679-2000 <br />