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Drilling Log <br /> ��❑❑® GROUNDWATER Soil Boring SS--12 <br /> TECHNOLOGY <br /> Prosect Chevron-E_Hardrnq, Stockton Owner Chevron USA Products Company <br /> Location 45 East Harding Way, Stockton, CA Prot No 02070 0139 <br /> T <br /> r� C_ Description <br /> z: 0 <br /> pQ 0 a o QU <br /> �' a° E v f6_ (Color, Texture, Structure) <br /> 0" <br /> �-° x Trace < 10%, Little 10% +n 20%, Some 20% to 35%, And 35% to 50% <br /> 24 17 Sandy clayey SILT (10,30,60) olive-brown with 15% white calcareous <br /> Spatches, grading to clayey SILT (30,70) brown, dry to damp hydrocarbon <br /> 200 -2255 0 0 388 odor <br /> 26 <br /> 28 ML <br /> 12 <br /> 3SB-12 17 <br /> o <br /> z60 -30 0 21 Sandy clayey SILT (10 30,60) brown with 5% black specks, dry to damp, <br /> hydrocarbon odor <br /> 32 <br /> Medium to coarse SAND brown, damp loose, moderate to poorly sorted, <br /> hydrocarbon odor <br /> -34 - 13 <br /> SS-t2 15 SM <br /> 68 -35 0 21 <br /> . <br /> 36 - <br /> lo <br /> Sandy sRy CLAY (20 30,50) olive-brown with black and white mottled <br /> 38 lenses of brown silty SAND (30,70) dry to damp hydrocarbon odor <br /> 20 <br /> SB-1222 <br /> 40 70 -40 0 33 L/M <br /> I ' <br /> 42 <br /> (grades olive-brown with hard calcareous nodules up to 3 cm) <br /> -44- 25 <br /> SB-12 28 <br /> 15 -450 33 <br /> 48 <br /> CL <br /> 48 <br /> 19 Sandy silty CLAY (10 40 50) brown damp to moist slight hydrocarbon <br /> 56-12 24 odor <br /> 50 0 -50 0 35 Encounterd Water (Driller s Call) 06/02/95 0930 hrs <br /> End of boring Back filled with cement <br /> - 52 - <br /> _ 54 - <br /> C)6/29/1995 <br /> 56 <br /> 06/29/1995 hlhlog-mar93 Page 2 of 2 <br />