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Drilling Log <br /> GROUNDWATER Moni _ <br /> TECHNOLOGY tor,ng Well MW 6 <br /> Proiect Chevron/Stocktonn S Center St. Owner Chevron U.S.A. Products Co See Site Map <br /> Location 139 S. Center Stockton. CA Pro{.No. 02070 4368 For Boring Location <br /> Surface Elev. NIA ft. Total Hole Depth 60.5 ft. Diameter 8 in. <br /> Top of Casing N/A ft. Nater Level Initial 44 ft. Static N/A ft. COMMENTS: <br /> Screen Dia-2 in. Length 25 ft. Type/Size •020 in. <br /> Casing:Dia 2 in. Length 35 ft. Type SCH.40 PVC <br /> Fill Material U Sand Rig/Core CME-75/SD/it Spoon <br /> Drill Co. SES, Inc. Method Hollow Stem Auger <br /> Driller Mike Duffy Log By S.C. Hurlev Date 9-14-93 Permit f <br /> Checked By Ed Simons License No. RG04422 <br /> o p ' <br /> of �► so, Description <br /> ao <br /> o a s 0 o Q m� U (Color, Texture, Structure) <br /> 0 cn m x 0 ? I Trace < 10%. Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br /> —2 <br /> 0 , Six inches of asphalt. <br /> ML Dark brown (7.5 yr 3/2) sandy SILT, 85% silt, 15% fine sand <br /> 2 < < (slightly moist, no hydrocarbon odor). <br /> ` -CBlack (7.5 yr 25/1) silty CLAY, 80% clay, 15% silt, 5% fine sand <br /> CL (moist, no hydrocarbon ocor). <br /> 4 6 <br /> < MW-6 10 <br /> 0.6 (s) n <br /> 6 < < Dark brown (7.5 yr 3/2) clayey SILT, 50A silt, 40% clay, 10% fine <br /> sand (slightly moist, no hydrocarbon odor). <br /> < < <br /> g < < 1I <br /> < < 6 <br /> t0 < < N►:-6 10 <br /> 0.6 (10) 14 <br /> < c <br /> i <br /> 12 < < � <br /> 14 < < ' <br /> 16 ML <br /> Mk-5 16 <br /> ` ` 10.6 (15) 20 Grades brown (7.5 yr 4/3). <br /> 16 < < j <br /> < < j <br /> i <br /> 18 < < <br /> I <br /> < < I <br /> j <br /> < <br /> 20 MH-6 8 <br /> < <br /> 0.2 (20) 14 <br /> < c <br /> 22 < < <br /> i <br /> < < i <br /> 10 <br /> I <br /> 10/11/18831itftg-mare3 °age: 1 C1 3 <br />