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Advanced BORING LOG <br /> GeoEnvironmental, Inc. <br /> BOREHOLE NO . : MW40 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209) 467-1006 FAX: (209) 467-1118 TOTAL DEPTH : 70 ' <br /> Project: Stallworth Auto Sales Date(s) Drilled: 13 March 2008 <br /> Project No. : AGE-NC-99-0682 Page 2 of 2 <br /> Depth Sample Blows PID Soil USCS Class and Well Well <br /> ID (per 6") (ppm) Symbol Soil Description Completion Well <br /> -50 MWIO-50 11-20-23 0 CL: SILTY CLAY: brown-gray, moderate plasticity, � . <br /> low toughness, approximately 30-40% silt, moist, <br /> hydrocarbon (HC) odor. <br /> Q.: SILTY CLAY: brown-gory, moderate plasticity, <br /> — 55 MWIO-55 13-23-30 2.4 low toughness, approximately 30-40% silt, moist to very Bentonite seal from 55' to <br /> moist, HC odor. 58' bsg <br /> — 60 MW10-60 14-IB-27 102 CL: SILTY CLAY: brown-gray, moderate plasticity, <br /> low toughness, approximately 30-00% silt, moist to very #3 sand firm 58' to 70' <br /> moist, HC odor. bag <br /> — 65 MWIO-65 25-25-29 1.8 CL: SILTY CLAY: brown-gray, moderate plasticity, <br /> low toughness,. approximately 30-40% silt, moist to very Screen 0.01" interval <br /> moist, HC odor. <br /> from 60' to 70' bsg <br /> SM: SAND: multi-colored, fine and medium grain, <br /> moderately graded, approximately 209/4 silt, saturated, <br /> —70 MWIO-70 13-17-24 0 HC odor. Cap at 70' <br /> SM: SILTY SAND: multi-colored-gmy, fine grain, <br /> poorly graded, approximately 400/ silt, saturated, HC <br /> odor. <br /> CL: CLAY: stay, low plasticity and toughness, with <br /> some sill and fine grain sand, saturated to very moist, <br /> HC odor. <br />