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Advanced BORING LOG <br /> GeoEnvironmental, Inc. <br /> ' BOREHOLE NO.MW-39 <br /> 837 Shaw Road, Stockton, <br /> CA 95215 <br /> J (209) 467-1006 FAX: (209)467-1118 TOTAL DEPTH: 150 feet <br /> Project: River City Petroleum Drilling Co.: Cascade Drilling <br /> Site Location: 2211 North Wilson Way Rig/Auger Type: CME 75 /8 inch hollow stem <br /> Stockton, California Logged By: W. R. Little <br /> - Reviewed By: WRL <br /> Project No.: AGE-NC-98-0500 Date(s) Drilled: 21 and 22 June 2005 <br /> Notes: Boring sampled = Water level during drilling Page 1 of 2 <br /> Completed as deep monitoring well = Water level in completed well <br /> Sample Blows PID Soil USCS Class and Well Well <br /> Depth ID (per 6") (ppm) Symbol Soil Description Completion Description <br /> 0 <br /> —5 MW39-5 CL:CLAY:brown fines;high troughness and high <br /> plasticity;dry;no(HC)hydrocarbon odor. <br /> —10 MW39-10 CL:CLAY:brown fines;high troughness and high <br /> plasticity;dry;no HC odor. <br /> 15 ML:SILT:brown fines high troughness and low <br /> MW39-15 plasticity;10%fine sand;dry,no HC odor. <br /> -20MW39 20 SM:SILTY SAND:majority fine sand;approximately <br /> 30%brown fines;dry;no HC odor. <br /> —25 MW39-25 SM:SILTY SAND:majority fine sand;approximately <br /> 30%brown fines;dry;no HC odor. <br /> —3 0SP:POORLY GRADED SAND. <br /> 40%fine 30%medium <br /> MW39-30 and 30%(gravel)coarse sand;with trace brown fines <br /> (silt);dry;no HC odor. <br /> —35 MW39-35 ® ® GP:POORLY GRADED GRAVEL: 10%fine 10% <br /> medium and 50%(1/2-INCH gravel)coarse sand;with <br /> —40 30%brown fines(silt);dry;no HC odor. / <br /> MW39-40 <br /> ML:SILT:gray fines;high troughness and low <br /> plasticity;dry/moist;slight HC odor. <br /> -45 ®. <br /> MW39-45 GP:POORLY GRADED GRAVEL: 10%fine 10% <br /> medium and 50%(1/2-INCH gravel)coarse sand;with <br /> —50 30%brown fines(silt);dry;no HC odor. <br /> MW39 50 <br /> ML:SILT:brown fines;low troughness and low <br /> —5 plasticity;trace fine sand,dry;no HC odor. <br /> MW39-55 <br /> ML:SILT:brown fines;low troughness and low <br /> plasticity;trace fine sand,dry;no HC odor. <br /> —60 MW39-60 <br /> CL:SILTY CLAY:gray fines medium troughness and <br /> high plasticity;moist/saturated;no HC odor. <br /> —65 MW39-65 CL:SILTY CLAY:gray fines medium troughness and <br /> high plasticity;moist/saturated;no HC odor. <br /> —7 0MW39-70 CL:SILTY CLAY:gray fines medium troughness and <br /> high plasticity;moist/saturated;no HC odor. <br /> —75 ML:SILT:brown fines low troughness and low Cement grout seal from <br /> MW39-75 plasticity;moist/saturated;no HC odor. 0.5'to 134'bsg. <br />