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<br />1 <br /> <br />1 <br /> <br /> <br /> <br />1 <br />1 <br /> <br /> <br />1 <br />1 <br /> <br /> <br /> <br /> <br />STEEPEN ROBERTSON b KIRSTEN <br />Consulting Engineers & Sdenliats Prajed: San Luis-Upper Impoundment <br />ob. No.; 14717 Page 1 at 1 <br />Dete: 11/12/92 <br />Feature: Tailings <br />Bore Hole lo g ole No. 4 Location: N206924, E203 , EL. 8563.29' <br />DEPTH DESCRIPTION COMMENTS <br />0 - 20' Mod. sand, donee, moist, greyish brown. <br /> <br />20' - 22' Fine to mod, sand, dense, wet greyish <br />brown. <br /> <br />22' - 30' Mod. sand, dense, moist, grey. <br /> <br />30'•31' Fine sand, dense, moist greyish brown. <br /> <br />31' • 35' Mod. sand, dense, moist, grey. <br /> <br />35' - 38' Mod. sand, med. dense, wet, grey. <br /> <br />36' - 47' Fine to med. nand, med. douse, wet <br />intermittent ro and bm. lenses. <br /> <br />47' - 54' Fine sand, with'alimes', sett, aaturatad, <br />mostl ro with bm. lenses. <br /> <br />54' - T2' Fine send, with'a0mp", sett to very soil, <br />w/deptlt, saturated, K. tan. <br /> TERMINATED BORING <br /> <br /> <br /> <br /> <br /> <br /> <br />~I <br />