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' ® Monitoring Well MW-2 <br /> .project Chevron/S. Center _.,.. _.._ .. _ owner, Chevron U.S.A. Inc. Drilling Log <br /> Location 1.39 S. Center, Stockton, CA project Numter 203 175 3291.01 <br /> Date Orilled _2/15/91 Total Depth of Hole 60.0 (t. Diameter 8.25 in. See Site Map <br /> Surface Elevation Water Level Initial 49.0 ft. 24-hour 44.07 ft. For Boring Location <br /> Screen: Dia 2.0 in. Length 25.0 ft. Slot Size 0.020 in. NOTES: <br /> casing: Dia 2.0 in. Length 35.0 ft. Type SCH 40 PVC <br /> Filter Pack Material 01P112 Lapis Lustre <br /> Drilling Company Sierra Pacific Ejalor. Drilling Method _Hgllow Stem Auger <br /> Driller -,bhnny Arguello Log by Fred Hayden <br /> Geologist/Engineer Allen B. Storm License No 17G 4394 <br />' c a U) <br /> + J ; ori m CAj Description <br /> ion <br /> 0n (Color, Texture, Structure) <br /> C3 3: 0 o <br /> v m <br /> 0 Three inches ASPHALT <br /> o.• o. a; <br /> •.�o•:•o•.�o ine inches BASE course with brick fragments <br />' ark brown Silty CLAY (firm, damp, no hydrocarbon odor) <br /> 2 <br />' 4 <br /> CL <br /> (FILL, some brick and rubble, wood fragments) <br /> 6 71 <br />' 8 Moderate yellowish brown clayey SILT with fine sand (firm, <br /> damp, no hydrocarbon odor) <br /> to <br />' C t MW2-11 <br /> 12 <br /> 14 Brownish grey clayey SILT with fine sand (firm, damp, <br /> no hydrocarbon odor) <br /> MW2-15 <br /> 16 <br /> K- <br /> 18 <br /> Light brown clayey SILT (medium stiff, dry, <br /> no hydrocarbon odor) <br /> 20 MW2-20 <br /> 2 31 <br /> I22 <br /> 24 Greyish brown clayey SILT (medium stiff, damp, <br /> no hydrocarbon odor) <br /> Ift"C3) <br /> cvx vni - Page 1 of 3 <br />