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BORING LOG <br /> EProjectNo Boring Diameter 8 75" Logged By-1013 P4 Casing Diameter 2„ T SG l r'v 33 <br /> Protect Name Unocal SIS#5098 Well Cover Elevation Date Drilled <br /> 5606 Pacific Avenue, Stockton NIA 11/20/95 <br /> Boring No Drilling Hollow-stem Drilling Company <br /> MW 16 Method Auger Woodward Drilling <br /> Pene- GW O V M Depth Stratigraphy <br /> tration level (PPM) (feet) USCS Description <br /> blows/6" Samples <br /> 0 <br /> Concrete slab over sand and gravel base <br /> Sandy silt,trace gravel to 314 inch in diameter, predominantly very fine <br /> to fine-grained sand, stiff, moist,dark yellowish brown <br /> 9/14/I9 5 —__= Silty very fine-grained sand, estimated at 15-25% silt, very stiff to <br /> hard,dark yellowish brown <br /> 10/14/20 10 _—_____ Silt,estimated at 5-15%sand and 5-15%clay, very stiff to hard, moist, <br /> — dark yellowish brown, trace caliche <br /> ML <br /> 7. <br /> 7. <br /> Silt,estimated at 10-20% sand and 5-15%clay, very stiff, moist,olive <br /> 8/11115 15 <br /> --— brown, friable,with caliche <br /> 41517 20 =_- Silt, estimated at 5-15% predominantly fine to medium-grained sand <br /> —_—— and 5-10% clay,stiff, moist,dark yellowish brown <br /> Page 1 of 3 <br />