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4 <br /> BORING LOG <br /> Protect No Boring Diameter 9" Logged By G G <br /> KEI-P89-1104 Casing Diameter N/A W W <br />• Protect Naive Unocal SIS #5421 Well Cover Elevation Date Drilled <br /> 7303 Pacific Avenue,Stockton 11/10/92 <br /> Boring No Drilling Hand Drilling Company <br /> EBS Method Auger Woodward Dnlhng Co <br /> Penetration G W Depth Strati- <br /> blows/5" level (feet) graphy Description <br /> Samples USCS <br /> 0 <br /> Five inch concrete slab over sand and gravel base <br /> Silty clay, estimated at 5% gravel to 3/4 inch in diameter stiff <br /> moist,brown(10YR 4/3) <br /> Silty clay,estimated at 15%o silt and 5-10% fine-grained sand <br /> moist very dark gray (5Y 3/1) <br /> CL <br /> 5 <br /> Silty clay,estimated at 25% silt and 5% fine-grained sand <br /> motst, pale brown (IOYR 6/3) y <br /> ML =_ — Silt,estimated at 10-15%clay and trace sand moist light <br /> 10 brownish gray(10YR 6/2 W <br /> TOTAL DEPTH 10' <br /> 15 <br /> 20 <br /> Pa-e I of l <br />