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Worl herprises Log of Soil Vapor Well: <br /> Location: Turnpike Rd,Stockton,CA Project Number: 17325532 VW-6 <br /> Dates Drilled: 10/12/04 Total Depth: 20.5 feet bgs Borehole Name: VW-6 <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: 6-11 and 15-20ft Slot Size: 0.020-inch Sampling Method: CA Modified split spoon <br /> Comments: 75 feet West of VW-4 <br /> 7� a <br /> i o <br /> nq <br /> a U 8 a <br /> w ;N <br /> a <br /> LITHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> 0 Grass and topsoil. 3'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 /> 16 0 Bentonite seal 4-5 ft <br /> 5 5 <br /> Lots of woody debris,black. <br /> 12 0 <br /> 10__ Sand(SP). Light gray,poorly graded,very fine to medium 1-inch SCH 40 PVC 10 <br /> 0.020-inch slot screen 6-11 ft <br /> grain,trace silt,moist,medium dense. poor recovery Pea gravel 5-12 ft <br /> Bentonite seal 12-14 ft <br /> 15 0 Silty Clay with Sand(CL). Light gray,slightly plastic,15%silt, <br /> 15-- up to 15%very fine grained sand,micaceous,damp to moist, 5 <br /> stiff. <br /> 1-inch SCH 40 PVC <br /> 0.020-inch slot screen 15-20 ft <br /> Pea gravel 14-20.5 ft <br /> P/Zzi <br /> Clayey Sand(SC). Gray,very fine to fine grained sand,up to <br /> 16 0 45%clay,damp to moist,stiff. <br /> 20 20 <br /> UM2870 Gateway Oaks Dr.,Ste 300 <br /> Sacramento,CA 95833 <br /> 916-679-2000 <br />