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0 <br />BACKFILL <br />ip <br />C 1.0' <br />N <br />O <br />m <br />I <br />0 <br />0 <br />1.6' <br />WASHED <br />ROCK <br />FIGURE 7 <br />RECOVERY SUMP CROSS SECTION <br />WASHINGTON SCIENTIFIC INDUSTRIES <br />LONG LAKE, MINNESOTA <br />DELTA NO. 10-87-200 <br />12" DIAMETER <br />�----- CORREGATED STEEL CASING <br />GROUND SURFACE <br />'/7 <br />BACKFILL <br />PLASTIC LINER <br />118' WIDE x 3' TO V <br />LONG SLOTS <br />1.6' <br />WASHED <br />ROCK <br />STEEL MESh <br />TREN <br />