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M Advanced BORING LOG <br /> GeoEnvironmental, Inc. BOREHOLE NO. : VW-3 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209) 467-1006 FAX: (209) 467-1118 TOTAL DEPTH : 30 feet <br /> Project: Stallworth 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 Q Water Level Before Drilling Page 1 of 1 <br /> m Water Level After Drilling <br /> Depth Sample Blows PIDSoil USCS Class and Well Well <br /> ID (per 6") (ppm) Symbol Soil Description Completion Description <br /> 0 <br /> -5 V W 1-5 -- 0 SM: Brown SILTY SAND: dry, 10% silt, fine poorly <br /> graded sand, no hydrocarbon (HC) odor. <br /> — 10 V W 1 -10 4-5-12 0 SP: Brown SAND: dry, 95% fine, 5%medium grain, 21-17 bsg.ment seal from <br /> poorly graded, no HC odor. <br /> — 15 VWl -15 11-16.20 0 <br /> ML: Brawn SILT: dry, low plasticity, low toughness, no i <br /> HC odor. <br /> Bentonite seal from 17- <br /> 19' has. <br /> ML: Brown CLAYEY SILT: dry, 30% clay, low <br /> —20 Vwl-20 7-10-17 262 plasticity, low toughness, HC odor. <br /> #3 sand from 19'-30' bsg. <br /> NIL: Brown CLAYEY SILT: dry, 30% clay, low <br /> — 25 V W 1-25 11-17-23 606 plasticity, low toughness, HC odor. <br /> Screen 0.03 interval from <br /> 20'-30' hag. <br /> ML: Brown CLAYEY SILT: dry, 30% clay, low <br /> — 30 V W I-30 10-12-17 703 plasticity, low toughness, HC odor. Cap at 30' bsg. <br />