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The San Joaquin Company, Inc. Monitoring Well Log <br /> WELL No.: MW-4 Project: Former Fueling Station Project No.: 9902.012 <br /> Owner: Carl B. Navarra Location: 7500 W. Eleventh Street,Tracy, California <br /> Top of Casing Elevation: 47.19 ft. Surface Elevation: 48.23 ft. Depth to Water: 7.04 ft. <br /> Date Installed: 04/27/00 Total depth of Boring: 22 ft. Boring Diameter: 8 in. <br /> Well Casing Diameter: 2 in. Total depth of Well: 22 ft. Casing Material: PVC <br /> Drilling Company: Spectrum Exploration Inc. Drilling Method: Open Stem Auger <br /> Driller: Dave Gonzalez Logged By- Dai Watkins <br /> NOTE:Uniform Soil Classifications are from field observations only without data from laboratory. <br /> Depth <br /> (Feet) Sample Graphic oDescription well Construction <br /> Heavy duty steel wellhead box with bolted cover <br /> 0 Silt,Sand and GRAVEL(GP)fill and O-ring seal <br /> t:,:�:,:■ Lockable water-tight cap <br /> 2 <br /> •'F Concrete <br /> .:'-GP:' <br /> Type-11 Portland cement grout <br /> r'r'r'r'r <br /> Stiff,grey Silty CLAY(CL) Bentonite seal <br /> MW4-5.5 Odor of fuel hydrocarbons <br /> 6 <br /> CL V 05/11/00 <br /> 8 <br /> 10 Soft,light brown Silty CLAY(CL) No.2116 Monterey sand filter pack <br /> MW4-11 Increasing stiffness and clay content <br /> with depth <br /> 12 Slight odor of fuel hydrocarbons <br /> CL 2-inch diameter PVC well casing <br /> 14 with 0.01 inch aperature machine-cut slots <br /> MW4-15 <br /> 16 <br /> 18 •; rti Grey Medium SAND(SP) <br /> ,~rSP <br /> 20tir <br /> .ti ti tirti� Na odor <br /> MW4-20.5 CL Soft,light brown Silty CLAY(CL) Conical PVC casing cap <br /> 22 <br /> TD Boring @ 22 feet <br /> - 24 - <br /> - 26 <br /> 28 <br /> 30 <br /> Page 1 of 1 <br />