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LOG OF EXPLORATORY BORInG <br /> PROJECT NUMBER 438-22-01 ARCO BORING NO. E-7 <br /> 2908 Benjamin Halt Dr. 86.17 <br /> BY EG GATE 5/30/84 Stockton, Calif. SURFACE LEV. 35.90 <br /> CLASSIFICATION DATA FIELD DATA <br /> Pla71i• Compree- Penetra• e $ n <br /> %Fines Liquid City sive tion C c E DESCRIPTION <br /> (•No.200) Limit Index Stenpth (Blowd <br /> {TSF) Ft.} <br /> Asphalt C-inc es <br /> (CL)Dark brown slightly sandy silty <br /> f <br /> CLAY - moist <br /> a <br /> 5 <br /> (gravelly interlayers) <br /> 10 <br /> 55 1 p` (SC)Light brown silty clayey <br /> SANG - wet <br /> 34 (CL)Light brown sandy silty CLAY - <br /> 20 damp <br /> DOTTOM OF BORING <br /> 25 <br /> 30 <br /> 35 <br /> rR <br /> 40 — <br /> > REMARKS: Boring was converted to a ground-water monitoring well by the A <br /> installation of 20 feet of 3-inch PVC casing. The lower 15 feet of <br /> ` casing was slotted and the annular space was backfilled with well pack <br /> sand from 20 feet to 4 feet. A bentonite-concrete seal was placed from <br /> 4 feet to 0 feet. mean CO(I <br /> d c I- <br />