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Drilling Log <br /> IIT CORPORATION Monitoring Well MW-4 <br /> ,T A Member of the IT Group <br /> ' Project 7-Eleven SS#21756 Owner 7-Eleven .Inc See Site Map <br /> For Boring Location 853E Yosemite Manteca CA Prot No 781723 9 Location <br /> Surface Elev Total Hole Depth 30 ft Diameter 8 In COMMENTS <br /> ' Top of Casing Water Level Initial 25 ft Static <br /> Screen Dia 2 in Length 15 ft Type/Size PVC 0 020 in <br /> Casing Dia 2 in Length 15 ft Type SCh 40 PVC <br /> ' Fill Material 2/16 Sand/Bent/Neat Cement Rig/Core Truck Mounted 6600 <br /> Drill Co Vironex Method HSA - 8 <br /> Driller Steve Log By Kim Metez Date 04/03/02 Permit # <br /> Checked 8y Ed Smonis License No California RG#4422 <br /> 0 <br /> T M <br /> O <br /> —� �, o > to (0Description <br /> a W N C C u o ao U <br /> 1 <br /> oE:- 3 E a s a a 1D-+ (Color, Texture, Structure) <br /> m a Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35% to 50% <br /> 0 A <br /> 1 < <br /> A. n <br /> i 2 < <br /> n n <br /> 4 ^ ^ sw <br /> A n <br /> < < Fine to medium SAND dark brown <br /> 6 ^ ^ <br /> < < <br /> A n <br /> <1 <1 Grades tan fine to medium SAND <br /> g n n sw <br /> ` < <br /> n n <br /> Grades medium SAND <br /> 10 A n <br /> < < SP <br /> ' 12 Sharp contact but depth 1 ft <br /> ' 14 CL Silty CLAY (50 50) light gray brown most/dry firm, very slight <br /> plastic <br /> _ Grades silty CLAY (20 80) stiff, plastic (goad in previous clay) <br /> 16 CL <br /> ' = Grades silty sandy CLAY (20,40,40) <br /> 18 sw Medium SAND light brown, moist, loose no hydrocarbon odor <br /> ' 20 — Interbedded sandy CLAY and clayey SILT <br /> ML <br /> 22 Fine to medium SAND light gray brown, moist loose <br /> • 24 = sw <br /> — V <br /> 26 — <br /> 06/05/2002 1 thlcg-Mar go Page 1 of 7 <br />