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a <br /> B O R I N G L O G <br /> Project No. Boring & Casing Diameter Logged By <br /> KEI-P89-1104 9" 2" W.W. <br /> Project Name Unocal Well Head Elevation Date Drilled <br /> 7303 Pacific, Stocktn N/A 10/10/90 <br /> Boring No. Drilling Hollow-stem Drilling Company <br /> MW4 Method Auger West Hazmat <br /> Penetration G. W. Depth Strati- <br /> blows/6" level (feet) graphy Description <br /> Samples USCS <br /> 0 <br /> Asphalt pavement over sand and gravel. <br /> CH <br /> Clay, trace silt, trace sand, trace <br /> rootlets, moist, very stiff, very <br /> 5 dark gray. <br /> 5/8/15 <br /> 6/11/21 Clayey silt, trace root holes, moist, <br /> ML/ very stiff to hard, brown. <br /> MH <br /> CH Clay, trace silt, very moist, very <br /> 10 dark gray. <br /> 6/17/21 _ =� <br /> ML/ Clayey silt, trace organic matter, <br /> MH trace root holes, moist, hard, <br /> brown. <br /> 6/18/21 Clayey silt, trace root holes, moist, <br /> hard, orange brown mottled with <br /> olive gray. <br /> �T <br /> 15 " <br /> 7/16/19 Clayey silt, as above, trace rootlets. <br /> ML/ Silt, with clay, trace root holes, <br /> 10/15/19 MH moist, hard, olive gray with trace <br /> ` orange brown mottling. <br /> 10 20 <br /> Page 1 of 4 <br />