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`..r -,op' <br /> File No. NFE-4533-01 <br /> August 1999 <br /> DATE DRILLED: 7/29/99 DRILLER: Exploration Geoservices <br /> ELEVATION: 47 ft. DRILLING METHOD: Hollow Stem Auger <br /> BACKFILL METHOD: Neat Cement DIAMETER OF BORING: 6 in. <br /> LOGGED BY: J. Buckthal DEPTH TO GROUNDWATER: 12 ft. <br /> Z o <br /> 3 <br /> Log of Exploratory Boring No. EB7 c0 <br /> o m Ca oLL , <br /> 0 U) m Description D 5 <br /> 0-3.5 feet Topsoil/Fill <br /> �+ 1 <br /> 2 <br /> 3 <br /> 3.5-4.5 feet BASEROCK from old road. <br /> 4 <br /> 5 <br /> 6 NS 9 CLAYEY SILT,dark gray, moist,slight hydrocarbon odor. ML <br /> "r <br /> 7- <br /> 8- <br /> EB7 8EB7 <br /> g 9-9.5' <br /> 14 CLAYEY SILT,changing to moderate hydrocarbon odor. <br /> 10 (9.5-10 ft.sample to Geomatrix) <br /> 12P/zCL <br /> 13 <br /> LEAN CLAY, dark gray, moist to wet, low plasticity, moderate hydrocarbon odor. <br /> 14 <br /> NS 7 LEAN CLAY brown moist to wet, low plasticity, no-hydrocarbon odor. CL <br /> 15 <br /> 16- <br /> 17- Boring terminated at 14.5 feet. <br /> Groundwater encountered at 12 feet. <br /> 18- <br /> 19 <br /> 20 <br /> 12223 21- <br /> 22- <br /> 23 <br /> r 24 <br /> 25 <br /> :) <br /> Earth Systems Consultants Pombo/Chevron LOG OF EXPLORATORY BORING NO. EB7 <br /> �' Northern Callfomia Tracy,California <br /> Figure A4 <br /> E—, <br /> r <br />