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I Project: AGE-NC-96-0440 <br /> J Strong Property Project No.: BORING NO.: <br /> Site Address: 5157 West Business Loop 205 Total Depth: 25 ft. MW-4 <br /> Tracy, California Date: 09 July 1998 <br /> IDrilling Co.: Soils Exploration Services Logged by: T. Cuellar Page 1 of 1 <br /> Drill Rig Type: B-60 Mobile Drill Rig Reviewed by: N. Henderson <br /> L�tholo �c Descri tion <br /> g P <br /> Dark brown,damp, very stiff,fine sandy SILT. <br /> – MW4-5 0 7-9-10 ML T7TNo visible sand. <br /> No petroleum hydrocarbon (HC)odor. <br /> Red-brown,very moist, stiff,silty,plastic CLAY. <br /> 10— MW4-10 0 6-9-8 CL No visible sand. Sli ght HC odor. <br /> Red-brown,very moist, stiff, silty,plastic CLAY. <br /> – MW4-15 0 4-6-7 CL No visible sand. Sli ght HC odor. <br /> Pale brown, very moist, stiff, fine sandy SILT. <br /> 20— MW4-20 0 4-7-9 ML About 70%fines; about 30%fine sand. <br /> – No HC odor. <br /> I Red-brown, damp, very stiff,silty, plastic CLAY. <br /> MW4-25 0 7-12-15 CL No visible sand.No HC odor. <br /> rP <br /> Boring MW-4 terminated at a total depth of 25 feet below surface <br /> grade(bsg). MW-4 completed as a ground water monitoring <br /> 30— well utilizing two-inch diameter PVC casing. Saturated soil <br /> – encountered between 15 and 20 feet bsg. <br /> – AS-BUILT CONSTRUCTION DETAILS: WE- <br /> Screen <br /> 1 E Screen Interval : 5 to 25 feet bsg <br /> Blank Interval : 0.5 to 5 feet bsg <br /> Sand Interval : 3.5 to 25 feet bsg <br /> I 40— Bentonite Plug : 2 to 3.5 feet bsg <br /> Grout Seal : 1 to 2 feet bsg <br /> I _ <br /> Advanced ��r-� <br /> IGeoEnvironmental, Inc. <br /> L',L4MIPR 1B RING-155TRONGlD440MW4. AM D9715/98 Q 1:54 PM <br />