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Drilling Log <br /> ❑❑® GROUNDWATER Soil Boring SB-2 <br /> ❑1:1❑ TECHNOLOGY <br /> See Site Map � <br /> Protect .Chevron-PI Benjamin Holt, Stockton Owner Chevron USA Products Comoany For Boring Location <br /> Location 2905 w Benjamin Holt Dr, Stockton, CA Prof No 02070 0017 <br /> Surface Elev Total Hole Depth 215 ft Diameter 8 in COMMENT'S <br /> Top of Casing Water Level Initial 18 ft Static <br /> Screen. Dia Length Type/Size 10 from the SE corner of station <br /> buildingCasing Dia Length Type <br /> Fill Material Neat Cement Rig/Core CME-75/S Ilt Spoon <br /> Drill Co SES Inc Method Hollow Stem Auger/PID <br /> Driller Mike Duffy Log By Jason Fedota Date 08/20/84 Permit <br /> Checked By Ed Simonis License No. RG#4422 <br /> Q T m <br /> c H <br /> a .2c� Description <br /> a� 0a a U a <br /> u o v <br /> o.. a e # u ro� m (Calor, Texture, Structure) <br /> m ° ¢ 0 m Trace < 10%, Little 40% to 20%. Some 20% to 35%, And 35% to 50% <br /> —2 <br /> Asphalt over base course <br /> 0 0 <br /> Dark brown-gray clayey sandy SILT (20,30 50) (dry, no hydrocarbon <br /> 2 odor) <br /> 4 <br /> ML <br /> 5 58-2 6 <br /> 8 Brown and gray mottled silty CLAY (30 70) (damp, soft, strong <br /> hydrocarbon odor) <br /> 10 30 513-2 3 <br /> -10 5 (grades with green/gray discoloration) <br /> g CL <br /> 12 • <br /> 14 po <br /> Brown silty fine SAND (45,55) (moist very strong hydrocarbon odor) <br /> 300 58-2 5 <br /> 16 -Is 6 5M <br /> 18 water Encountered, 06/20/94, l 25pm <br /> Gray silty fine to medium SAND (20 80) (saturated loose, moderate <br /> 5w hydrocarbon odor) <br /> 20 30 se-2 2 <br /> -20 3 <br /> 22 s End of boring Backfilled with neat cement <br /> — 24 - <br /> 07/21/1994 1ifhlog—mar93 <br /> Page 1 of <br />