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.L The San Joaquin Company Inc. Monitoring Well Log <br /> WELL No.: MW-12A Project: Former Fueling Station Project No.: 9902.016 <br /> Owner: Carl B. Navarra Location: 7500 W. Eleventh Street,Tracy, California <br /> To of Casing Elevation: 48.98 49.38 <br /> Top 9 ft. Surface Elevation: ft. Depth to Water: 9.09 ft. <br /> Date Installed: 03/28/02 Total depth of Boring: 36 ft. Boring Diameter: 8 in. <br /> Well Casing Diameter: 2 in. Total depth of Well: 35 ft. Casing Material: PVC <br /> ~ Drilling Company: Spectrum Exploration Inc. Drilling Method: Open Stem Auger <br /> { <br /> L99 Y�Driller: Dave Gonzalez Logged B Dai Watkins <br /> NOTE:Uniform Soil Classifications are from field observations only without data from laboratory. <br /> Depth Graphic <br /> (Feet) Sample Log Description Well Construction <br /> L. <br /> Heavy-duty steel wellhead box with bolted cover <br /> 0 and 0-ring seal <br /> Sandy GRAVEL(GP) fill 9 Lockable water-tight cap <br /> iL 2 !:!GAF:! No odor R b <br /> . .:.:.;. Concrete <br /> 4 <br /> MW12A Type-11 Portland cement rout <br /> 6 5 Slight odor of fuel hydrocarbons9 <br /> Medium soft,grey Silty CLAY(CL)- <br /> �� CL increasing gravel with depth <br /> 8 <br /> V 04/11/02 <br /> S" O MW12A No odor <br /> t0.5 ,ti,ti• <br /> r•r•r• <br /> 12 '~rtir rSr Flowing,light brown Silty SAND(5P)- <br /> j ''•f}f,r�} rises in augers <br /> ati:yfti ti? <br /> _ 14 — <br /> with r-r-r-r <br /> r•r•r•r Light brown Silty SAND(SP) some <br /> ti. <br /> No Core r,r•r•r 9 tY - <br /> z Recovery gravel <br /> 16 No odor <br /> for •tir:r fSf <br /> •tif:f~l:J <br /> tirtir stir <br /> 18 As above-wet,loose,gravel decreases <br /> r•r•r-r with depth <br /> r•r r•r <br /> •r•r•r•r <br /> MW12A No odor <br /> 20.5 Light brown Silty CLAY(CL)- <br /> 22 with some sand and gravel <br /> CL <br /> 24 <br /> MW12A No odor <br /> 26 25.5 <br /> + Bentonite seal <br /> L ti 28 Light grey,Sandy SILT(ML)-very wet, <br /> very loose <br /> ML No,2/16 Monterey sand filter pack <br /> 30 <br /> Page 1 of 2 <br />