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® \ i <br /> Monitoring Well MW-3 <br /> project Chevron/S. Center Owner Chevron U.S.A. , Inc. Drilling Log <br /> Location 135 S. Center, Stockton, C4 project Member 203 175 3291.01 -- <br /> Date Drilled . 2/1-5/91 Total Depth of Hole 60.0 ft. Diaveter B•25 in. See Site Map <br /> Surface Elevation __._ Meter Level Initial 48.0 ft. 24-hour 44.87 ft. For Boring Location <br /> Screen Dia _'.0 in. Length 25.0 ft. Slot Size 0.020 in, NOTES. <br /> Casing Dia ='-0 in. Length 35.0 ft. TyQe SCH 40 PVC <br /> Filter Pack Witerial 02/12 Lapis Lustre <br /> Drilling Cbapany Terra Paclffc Exp]. Drilling Method hb]low ,Stem Auger <br /> Driller ,bhnry Arguello Log by Fred Hayden <br /> Geologist/Eng-,neer Allen B. Storm License No A6 4394 <br /> C u W <br /> Q �, L9 ao Description <br /> C i^ ,c (Color. Texture, Structure) <br /> C8 <br /> L C m 8 <br /> 0 Three inches ASPHALT <br /> O. G•'0. <br /> •:•o•:•o•.:o fine inches BASE course <br /> fight brown silty CLAY (medium stiff, dry, <br /> 2 no hydrocarbon odor) <br /> CL - <br /> 4 Light brown clayey SILT (medium stiff, dry, <br /> no hydrocarbon odor) <br /> 6 <br /> ML <br /> i 8 c <br /> Moderate yellowish brown silty CLAY with lignter brown <br /> inclusions (medium Stiff, damp, no hydrocarbon odor) <br /> 10 MN3-10 <br /> 12 -- <br /> CL <br /> A <br /> MH3-15 <br /> 16 <br /> 18 Light olive brown clayey SILT with some sand Smedium stiff, <br /> damp, no hydrocarbon odor) <br /> Mw3-20 <br /> 20 <br /> 22 ML <br /> 24 <br /> MN3-25 <br /> 26 <br /> Page 1 of 3 <br /> oy26ir99i <br />