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r <br /> Protect ARCO Facility No. 2130 <br /> 7906 N. El Dorado Street, Stockton, CA Log of Soil Boring No. B1 <br /> . Logged By T.Ramsden Checked By LD Date Started 515193 Date.completed 515193 <br /> Drilling Co Wayne Drilling Co. Drift Bit Diameter(in) 8" Total Depth(ft) 26.0 <br /> Dauer W. Taylor Backfill Material Cement Grout from Oft to 26 k <br /> Drilling Method Hollow Stem Auger Sampler CA Modified Split-spoon <br /> Drilling Equipment CME 75 Depth to Water at Time of Drilling(ft) Not Encountered <br /> S-- LITHOLOGIC DESCRIPTION Lithology Eo a o REMARKS <br /> A 0 as to o <br /> _. a <br /> Asphalt <br /> CL <br /> CLAY Black,slightly moist,cohesive,no odor <br /> - - _ _ - _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ <br /> ML <br /> SILT Light brown,trace fine sand, slightly moist,loose, no odor — <br /> 3 0 85 <br /> 5 4 <br /> 10 <br /> Sandy SILT Tan, fine grained,slightly moist,hard, no odor <br /> 10 — 4 0 so <br /> SILT Tan to brown,trace fine sand,slightly moist,very hard, no _ 9 <br /> odor 17 <br /> IS0 85— <br /> SILT Tan,some brown mottling,trace fine sand, slightly moist, i25 <br /> 7— 17 <br /> hard,no odor 36 <br /> 20 — 11 0 too <br /> SP 16 <br /> SAND Tan to yellow,coarse to medium grained, grain size 18 <br /> decreasing downward, slightly moist,loose, no odor <br /> - - -- - - - - - - - - - - -- - - - - - - - - - - - - - - - - <br /> ML <br /> SILT Medium brown with dark brown mottling,trace fine sand, — <br /> 25 slightly moist,hard,no odor 5 0 70 <br /> _ 25 <br /> 25 <br /> • <br /> 30 <br /> Project A158W01 Roux Associates Page 1 of <br />