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PROJECT <br />TreaTeK- ...,..,.., <br />NUMBER <br />.... <br />197-32 <br />CRA „,....,..3.,.,w,t:,Eg....,i.,.m,„.,o,t,p.,i,....m., <br />A —A <br />COMPANY <br />WELL CONSTRUCTION LOG <br />WELL NUMBER CH-1 <br />PROJECT NAME EW-4A; Extration Well Replacement DATE DRILLED August 13, 1996 <br />continued from previous page <br />a a. <br />o BLOW COUNTS RECOVERY (%/ft.) SAMPLE ID. EXTENT U.S.C.S. 1GRAPHIC LOG LITHOLOGIC DESCRIPTION DEPTH (ft. BGSI 5 ---.- Lu 4-, WELL DIAGRAM -.1.47. u.1 <br />CH1- <br />147 <br />i <br />x _ Y <br />x .... <br />X <br />X <br />A -sg -,,,- <br />14 -x -4- .x .., <br />x x - x - x - <br />X — X <br />—'5—,, <br />CL/ML-SILTY CLAY/CLAYEY SILT, blue gray <br />SAND-blue gray, medium grained, flowing <br />— ..... <br />— <br />_ ___ <br />,. —.- <br />-120— <br />- 4- <br />- -I- <br />— —. <br />_ <br />-125--100 <br />...._ <br />-130---105 <br />— <br />-95 <br />_ <br />_ <br />Centralizer <br />(127' bgs) <br />_ <br />_ <br />SP <br />x <br />x <br />X <br />X— <br />ML/SP-SILT, fine SAND and SILTY SAND, crude layers, <br />gray with brown staining <br />SAND-brown, medium grained, flowing SP <br />x <br />X <br />X <br />x • <br />x <br />• <br />X <br />X <br />Y <br />X — <br />ML/SM-SILT and SILTY fine SAND with some clay, <br />brown - <br />— <br />— <br />_ <br />—.— <br />_ <br />_ <br />_ <br />- <br />-145-- <br />_ <br />- - <br />_ <br />H50-,--125 <br />_ <br />- - <br />_ <br />_ _ <br />- <br />H35---110 <br />-140-----115 <br />Seal <br />(Tremmied <br />Bentonite <br /> Slurry) <br />120 <br />Transition <br />Sand (0/30) <br />Top of Filter <br />Pack Sand <br />1152.5' bgs) <br />- <br />SP SAND-fine to medium grained, brown, flowing <br />-- - x-, ML-CLAYEY SILT-light gray brown <br />SM <br />-155--130 <br />SILTY SAND-medium grained, brown, flowing <br />SP-SM - SAND-becoming coarse grained, gradational <br />with unit above <br />SAND-becoming medium grained and silty <br />Continued Next Page <br />1,--! <br />I SP <br />SM <br />SM <br />PAGE 4 OF 6 <br />a