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nn Drilling Log <br /> ❑U© GROUNDWATER VW-1 <br /> ❑�❑ TECHNOi,.OGY <br /> Chevron/Ben�amrn Holt owner See Site Map <br /> Project Chevron USA Products Co.-- For Boring Location <br /> Location Stockton Ca Project No 02320-2241 Date drilled 3/3/92 <br /> Surface Elev Total Hole Depth 20 0 ft Diameter 8 m COMMENTS <br /> Top of Casing Water Level Initial 20 0 ft Static <br /> Screen Dia 2 in Length 5 ft Type/Size 2 in <br /> Casing Dia 2 in Length 15 ft Type Sch 40 PVC <br /> Filter Pack Material Lapis Lustre #2/t2_ _ Rig/Core Type Mobile B-53/S ht Soon <br /> r Drilring Company Sierra Pacific Method Hollow Stem Auger _ Permit <br /> 3 <br /> Driller Manuel Ar uillo Log By Steve Kranyak <br /> Checked By Ed Simonis License No RG 4422 <br /> _ C C Vl <br /> ., 0 Description <br /> �'• _m o f m o o U c3 <br /> w� 3 E a s ; (0_J U) (Color, Texture, Structure) <br /> �� o to o� to Trace < 10%, Little lo% to 20%. Some 20% to 35%. And 35% to 50% <br /> U mx <br /> —2 <br /> 0 Asphalt over base course <br /> o —'Brown silty CLAY with some fine sand (medium stiff, moist <br /> jr r no hydrocarbon odor) <br /> 2 < <br /> 4 < <br /> 1 <br /> CL <br /> g < <br /> 8 <br /> Gray silty fine SAND (medium dense, moist hydrocarbon <br /> odor) <br /> - 12 - <br /> 14 <br /> 214 <br /> $ = 65 A 10 SM <br /> 12 <br /> 16 — 11 <br /> _ 13 <br /> 70 8 15 <br /> 12 <br /> 18 15 <br /> 12 <br /> 70 C 14 <br /> 20 Q Encountered water 3/3/92 (16.30 hours)i <br /> End of boring installed vapor extraction well <br /> 22 <br /> 24 <br /> f 04/07/1992 kthlog-ian92 Page 1 0f 1 <br />