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• C <br /> { �jj Monitoring Well MW-1 <br /> project Chevron/S. Center Owner Chevron U.S.A. , Inc. Drilling Log <br /> Location 139 S. Center, Stockton, CA project Number 203 175 3291.01 See Site lap <br /> Date Drilled 2/14/91 Total Depth of Hole 60.0 ft. Diameter 8.25 in <br /> For Boring Location <br /> Surface Elevation hater Level Initial 45.0 ft. 24-hoU• 44.87 ft. <br /> Screen: Dia 2.0 in. Length 25.0 ft. Slot Site 0.020 in. NOTES: <br /> Casing Dia 2.0 in. Length 35.0 ft. Type SCH 40 PVC <br /> Filter Pack Material 02/12 Laois Lustre <br /> Drilling Company _Sierra Pacific Drilling Method Hollow Stem AUoer <br /> Driller „bhnny Arouello Log by Fred Hayden <br /> Geologist/Engineer Allen S. Storm License No RG 4394 <br /> C u <br /> G G U <br /> Description <br /> (Color. Texture. Structure) <br /> La <br /> o -o+ <br /> U N co U7 <br /> I <br /> 0 Three inches ASPHALT <br /> o•.o, a: ine inches BASE course with brick fragments <br /> 1 "--Dark grey silty CLAY (soft, moist, no hydrocarbon odor) <br /> 2 <br /> CH <br /> 4 <br /> MWS-5 <br /> - Light brown Clayey SILT (medium stiff, dry, <br /> no hydrocarbon odor) <br /> 6 ML <br /> Light brown silty CLAY with some white mottling (medium stiff, <br /> 8 damp, no hydrocarbon odor) <br /> i <br /> MW1-10 <br /> 10 j <br /> 12 <br /> CL <br /> 14 <br /> MWi-15 <br /> 16 <br /> C C <br /> 18 Light brown clayey SILT (medium stiff, damp, <br /> no hydrocarbon odor) <br /> MWi-20 <br /> 20 <br /> 22 ML <br /> 24 <br /> MW1-25 Light olive brown clayey sandy friable SILT (medium stiffV9 I , <br /> damp, no hydrocarbon odor) <br /> 26 <br /> Page i of 3 <br /> a3/26/1eg! <br />