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I <br />A sediment sump will be constructed 502 feet west of the inlet of the <br />. ~ West Ridge pond. The sediment sump will be constructed in the flat <br />area of the West Ridge pond diversion ditch see Exibit 4,6-27 for <br />the exact location with respect to the West Ridge pond. The sediment <br />sump will have dimensions of 30'W x 150'L x 10'D. The sediment sump <br />i will have a volume of 1667 cubic yards. This sediment sump will allow <br />easier sediment removal. The sediment removed from the sediment sump <br />i will be spread on untopsoiled areas of West Ridge. <br />~~ <br /> <br />7/26/1988 4.6-63a <br />