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BORING LOG <br /> Project No Boring Diameter 9" Logged By TGG <br /> KEI-P89-1104 Casing Diameter NIA W W 3 <br /> Project Name Unocal S/S #5421 Well Cover Elevation Date Drilled <br /> 7303 Pacific Avenue Stockton 11/9/92 <br /> Boring No Drilling Hollow-stem Drilling Company <br /> EB3 Method Auger Woodward Drilling Co <br /> Penetration G W Depth Strati- <br /> blows/6" level (feet) graphy Description <br /> Samples USCS <br /> SM Silty sand estimated at 15-20% silt and trace clay, hard, moist <br /> f brown (10YR 5/3),sand is fine to very fine-grained, slightly <br /> SM-SP 't': micaceous__________________ <br /> Sandy silt,estimated at 25% fine to very fine-grained sand,firm <br /> f.: to stiff, very moist dark gray (5Y4/1) <br /> 8/612 25 <br /> Silty sand, approximately 45% silt sand is fine-grained, firm <br /> SP-SM moist, gravish brown (10YR 5/2) trace rootlets <br /> f•f <br /> s•s <br /> s•s <br /> s's <br /> . 30 ' '<< Well graded gravel and sand,estimated at 40% sand,subrounded <br /> 23/27/34 GW ;•,. °<° gravel to 1-3/4 inches in diameter, very dense moist, light <br /> brownish gray (10YR 6/2) <br /> e°•p'•s°e° a <br /> 35 SW Sand, well graded estimated at 5% subrounded gravels to 3/4 <br /> 9116/23 inch in diameter, dense, moist, light yellowish brown (10YR <br /> s, 6/4) <br /> i'a'e•i <br /> 13/18/21 <br /> 40 ° Well graded gravel with sand,estimated at 35-40% sand gravel is <br /> �='4°'� i <br /> GW subrounded to 1-3/4 inches in diameter, dense moist black <br /> 4,♦ 9 4 <br /> O 4'i 9 (10YR 2/1) <br /> V <br /> 01 <br /> I <br /> Page 2 of 3 <br />