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Sediment shall be removed when it reaches one half the height of the <br />dam. <br />• Anticipate submergence and deposition above the triangular silt dam <br />and erosion from high flows around the edges of the dam. <br />Immediately repair any damage or any undercutting of the dam. <br />February 2005 Volume ll — Construction Stormwater Pollution Prevention 4-79 <br />