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Advanced BORING LOG <br /> GeoEnvironmental, Inc. BOREHOLE NO.: MW-47 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> TOTAL DEPTH: 100 feet <br /> (209)467-1006 FAX: (209)467-1118 <br /> Project: River City Petroleum <br /> Date(s) Drilled: 05 July 2005 <br /> Project No.: AGE-NC-98-0500 <br /> Page 2 of 2 <br /> USCS Class and Well Well <br /> Depth Sample Blows PID Soil Soil Description completion letion Description <br /> ID (per 6") (ppm) Symbol <br /> —80 MW47 80 ML:SILT:brown-blue fines;high troughness and low <br /> plasticity;saturated;HC odor. / / <br /> -85 MW47 85 CL:SILTY CLAY:brown fines;medium troughness Bentonite pellet seal <br /> and high plasticity;moist to saturated;significant HC from 84'to 88' bsg. <br /> odor. <br /> 43 sand from 88'to 100' <br /> —90 MW47-90 ML:SILT:brown fines;high troughness and low bsg. <br /> plasticity;saturated;no HC odor. <br /> —95 Screen 0.02 interval from <br /> SM:SILTY SAND:majority fine sand;approximately <br /> MW47 95 90'to 100'bsg. <br /> 10%brown fines;saturated;strong HC odor. <br /> 0 0 MW47 100 CL:SILTY CLAY:brown fines;medium troughness Cap at 100'bsg. <br /> and high plasticity;moist to saturated;significant HC <br /> odor. <br /> 05 <br /> �10 <br /> 0 <br />