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Drilling Log <br /> ��❑ GROUNDWATER Soil Boring SB-13 <br /> TECHNOLOGY <br /> Project Chevron-E Hardrn.q, Stockton Owner Chevron USA Products Company__ <br /> Location 45 East Hardrnq Way, Stockton, CA Prod No 02070 0139 <br /> ` 45` Description <br /> :! o a m o a o c3 <br /> P <br /> o-- a a m o �� {Color, Texture, Structure} <br /> Ul m K a Trace < 10%, Little 10% to 20%. Some 20% to 35%, And 35% to 50% <br /> 24 13 Cjayey sandy SILT (10,20,70) brown with 10% white calcareous mottling, <br /> SB-13 18 dry, strong hydrocarbon odor <br /> 250 -250 21 <br /> 26 ML <br /> (grades more clayey (10,40,50)) <br /> - 28 - <br /> 13 <br /> 30 SS-13 15 <br /> 90 -30 0 26 <br /> L/M <br /> - 32 - <br /> - 34 - 15 Medium to coarse SAND brown, loose, moderate to poor sorting, dry to <br /> SB-13 21 damp, slight hydrocarbon odor <br /> 20 -350 27 <br /> 3B sw <br /> Sandy silty CLAY (10,30,60) gray--brown with 25% white calcareous <br /> 38 patches, dry to damp, slight chemical odor <br /> 1s <br /> 4� 5B-13 26 a <br /> 2 -400 39 <br /> 42 (grades brown silty CLAY/clayey SILT) <br /> 44 26 <br /> SB-13 31 <br /> 150 -450 45 --L/M <br /> 46 <br /> 48 Sandy clayey SILT (10,45,45) brown with 5% white crystalline calcareous <br /> 19 patches grades damp to wet, hydrocarbon/chemical oaor <br /> L!M' <br /> 5526 <br /> 50 150 -50 0 34 Encounterd Water 06/01/95 <br /> 0 <br /> End of boring Back felled with cement <br /> - 52 - <br /> _ 54 - <br /> 05/29/1995 <br /> 58 <br /> 05/29/1995 Mhlog-mar93 Page 2 o1 2 <br />