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i <br /> Total depth of borings 75 Feet Diameter of borings 10 Inch Date drilled, $/13/1992 <br /> Casing diameter, 4 Inch Length= 75 Feet Slot sizes 0 02 Inch <br /> Screen diameter, 4 Inch Length, 20 Feet Material types PVC <br /> Drilling Companys Wayne ©rolling Co Drillers-Richard/,Jay <br /> Method Useds Hollow-stem auger California modified split-spoon Field Geologists Claudio Avila <br /> Signature of Registered Professionals <br /> Registration No., 43139 States California <br /> MEASURED SAMPLE o PID. USCS DESCRIPTION WELL <br /> DEPTH NO ; CODE CONST <br /> 0 <br /> Asphalt and gravel fill <br /> 2 <br /> 4 <br /> S-5 16 PPmv SAL Silt Some Fne-grained sand grayish brown dry non-plastic stiff <br /> • 6 <br /> 8 <br /> 10 S-10 25 ppmv Clayey silt moderate yellowish brown very stift <br /> 12 <br /> 14 <br /> S-15 38 pp0 v Silt light brown hard <br /> 16 <br /> 18 <br /> I <br /> • —r,�/` LOG OF BORING: B-9/MW-4 PLATE <br /> /V!■S ARCO Service Station No. 2130 <br /> 7906 EI Dorado Street C26 <br /> PROJECT NO. 30003 FILE NO <br /> Stockton, California <br /> 0003G7A <br />