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World KmAffinrises of Vapor Extraction Well: <br /> Location: Turnpike Rd.Stockton,CA Project Number: 17325532 40 VW-j® <br /> Dates Drilled: 6/1/05 Total Depth: 16.5 feet bgs Borehole Name: VW-10 <br /> Drilling Contractor: Gregg Drilling Well Construction Date: 6/1/05 Logged By: Jeff Brooks,PG <br /> Borehole Diameter: 8-inch Casing Diameter: 1-inch Casing Type: SCH 40 PVC Checked By: Vern Elarth,PG <br /> Drilling Method: Hollow Stem Auger Screen[nterval: 6-16 ft Slot Size: 0.020-inch Sampling Method: CA Modified split spoon <br /> Comments: In northwest comer of property. <br /> U o0 <br /> a <br /> E cL <br /> Q <br /> LITHOLOGY DESCRIPTION WELL CONSTRUCTION <br /> 3'locking stove pipe <br /> completion <br /> Well secured with gas <br /> measurement valve cap. <br /> 1-inch SCH 40 PVC to 6 ft <br /> bgs <br /> Neat cement from surface to 4 0 <br /> Grass and topsoil. ft bgs <br /> Silty Sand with Clay(SM). Yellowish brown,55%very fine to <br /> fine grained sand,25%silt,20%low to moderate plasticity clay, <br /> micaceous,moist,dense. Sand compostion dominated by <br /> subrounded to rounded quartz. <br /> Bentonite seal 4.5 ft <br /> 5 * 0 1255 *no blow counts-pneumatic sample hammer. 5 <br /> Silty Clay with Sand(CL). Grayish brown,45%low plasticity <br /> Xclay,35%silt,20%very fine to fine grained sand, moist,stiff. 1-inch SCH 40 PVC <br /> 10 0 1300 0.020-inch slot screen 6-16 ft 10 <br /> Pea gravel 5-16.5 ft <br /> Sandy Clay(CL). Yellowish brown,75%low to moderate <br /> plasticity clay,25%very fine to fine-grained sand,moist,stiff. <br /> 15 0 1305 15 <br /> UM2870 Gateway Oaks Dr.,Ste 300 <br /> Sacramento,CA 95833 <br /> 916-679-2000 <br />