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D0© Drilling Log <br /> ��� GROUNDWATER VW-1 <br /> TECHNOLOGY <br /> Prolect Chevron/Benjamin Molt owner Chevron USA Products Co See Site Map <br /> For Boring Location <br /> Location Stockton, Ca _ Project No 02320-2241 Date drilled 313192 <br /> Surface Elev Total Hole Depth 20 0 ft Diameter 8 1/1 COMMENTS <br /> Top of Casing Water Level Initial 20 0 ft Static <br /> Screen Dia 2,n length 5 ft Type/Size z in <br /> Casing Dia 2 in Length 15 ft Type Sch 40 PVC <br /> Filter Pack Material Lapis Lustre #2112 Big/Core Type Mobile B-531 SAlit Spoon <br /> Drilling Company Sierra Pacific Method Hollow Stem Auger Permit 1iE <br /> Driller Manuel Arqullo Log By Steve Kranyak_ <br /> Checked By Ed Simonrs License No RG 4422 <br /> r;, �, o; r Description <br /> dw W2 �Q QUV OL C> U <br /> E d a E ; �� to (Color, Texture, Structure) <br /> av ° m R Trace < 10%, Little 10% to 20%. Some 20% to 35%, And 35% to 50% <br /> c� �mx � <br /> _2 <br /> 0 Asphalt over base course <br /> —'-Brown silty CLAY with some fine sand (medium stiff, moist, <br /> no hydrocarbon odor) <br /> 2 < c <br /> c < <br /> 4 < < <br /> qr <br /> 6 CL <br /> < c <br /> 8 <br /> 10 <br /> Gray silty fine SAND (medium dense, moist hydrocarbon <br /> odor) <br /> 12 <br /> 14 — <br /> 65 A 10 SM <br /> 16 — 12 <br /> n <br /> 13 <br /> 10 B 15 <br /> 18 12 <br /> 15 <br /> 12 <br /> 70 C 14 <br /> 20 Encountered water 313192 (1630 hours)/ <br /> End of boring, installed vapor extraction well <br /> 22 <br /> 24 <br /> 04/07/19921thlog-iarn92 Page I of 1 <br />