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0 <br /> Drilling Log <br /> IT CORPORATION Monitoring Weli MW--4 <br /> • T A Member of the IT Group <br /> I <br /> 7-Eleven Inc See Site Map <br /> Project 7-Eteven, SS#2f756 owner For Boring Location <br /> Location <br /> 853 E Yosemite Manteca CA Praj Na 781723 <br /> Surface Eley Total Hole Depth 30 ft Diameter 8 in COMMENTS <br /> Top of Casing Water Level Initial 25 ft Static <br /> Length 15 ft Type/Size PVC 0 020 in <br /> Screen Dia 2 m Len 9 15 ft Type Sch 40 PVC <br /> Casing Dia 2 in Length <br /> Fill Material 2718 SandlBent/Neat Cement Rig/Core Truck Mounted 8600 <br /> Drill Co Vuonex Method NSA - 8 <br /> Driller Steve Log By Kim Metez Date 04/03/02 Permit # <br /> Checked By <br /> Ed Simonrs License No Cal,fornia RG#4422 <br /> � T y <br /> Description <br /> E 'a <br /> aai� a as a U �0 (Color, Texture, Structure) <br /> ❑ o m cc Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35°6 to 50% <br /> U M <br /> -2 <br /> 0 <br /> < I <br /> AA <br /> 2 < < l <br /> AA <br /> < < ii SW <br /> 4 A n <br /> A A Fine to medium SAND dark brown <br /> < < <br /> 6 n A <br /> ^ Grades tan fine to medium SAND <br /> < < Sw <br /> S A ^ <br /> A n Grades medium SAND <br /> 10 ^ A { <br /> < < SP <br /> 12 Sharp Contact but depth 1 it <br /> CL Silty CLAY (50,50) light gray brown, moist/dry, firm very slight <br /> 14 plastic <br /> Grades silky CLAY (20 80) stiff plastic (good o previous clay) <br /> 16 — <br /> CL <br /> Grades silty sandy CLAY (20,40 40) <br /> 18 SW Medium SAND light brown moist, loose no hydrocarbon odor <br /> G <br /> 20 L Interbedded sandy CLAY and clayey SILT <br /> 22 — Fine to medium SAND light gray brown, moist, loose <br /> Sw <br /> 24 = q <br /> 26 <br /> Page l of 2 <br /> 06/05/2002 idhiog-Mar 99 _ _ <br />