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q <br /> l Advanced BORING LOG <br /> GeoEnvironmental, Inc. BOREHOLE NO . : VW4 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209) 467-1006 FAX: (209) 467-1118 TOTAL DEPTH : 30 feet <br /> Project: Stallwortb Auto Sales Drilling Co. : Mitchell Drilling <br /> Site Location : 602 North California Street Rig/Auger Type: CME 75 HT / 10 inch hollow stem <br /> Stockton, California 95205 Logged By: ALC <br /> Reviewed By: WRL <br /> Project No. : AGE-NC-99-0682 <br /> Date(s) Drilled: 18 April 2007 <br /> Notes: Completed as vapor extraction well a Water Level Before Drilling <br /> Page 1 of 1 <br /> : Water Level After Drilling <br /> Depth Sample Blows PID Soil USCS Class and Well Well <br /> ID (per6") (ppm) Symbol Soil Description Completion Well <br /> 0 <br /> SM: Brown SILTY SAND: d 40% silt fine poorly <br /> -5 VWt-5 -- 0 o P Y <br /> graded sand, no hydrocarbon (HC) odor. <br /> - 10 SM: Brown SILTY SAND: dry, 40% silt, fine poorly Cement grant seal from <br /> Vwl-10 4-7-10 0 graded sand, no HC odor. 7 g <br /> SP: Multicolored SAND: dry, 90% finemin, poorly <br /> — 15 Vwl-15 7-16-20 0 g P Y <br /> graded, no HC odor. <br /> Bentonite seal from 17'- <br /> . , . , 19' b8g. <br /> ML: Brown CLAYEY SILT: dry, 30% clay, low <br /> —20 Vwl-2o 10-16-19 444 plasticity, low toughness, HC odor. <br /> 43 sand from 19'-30' bsg. <br /> -25 V W 1 -25 7-10-15 622 ML: Brown SILT: dry, low plasticity, low toughness, <br /> HC odor. <br /> Screen 0.03 interval from <br /> 20'-30' bsg. <br /> ML: Brown CLAYEY SILT: dry, 40% clay, moderate <br /> — 30 V W I-30 7-11-16 907 plasticity, low toughness, HC odor, Cap at 30' bsg. <br />