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-3- <br /> General <br /> 1. The Division's policy is to require that all sedimentation ponds be cleaned <br /> when the sediment accumulates to 60% of the total sediment storage volume. This <br /> is similar to Federal OSM regulations. To enable State inspectors to enforce <br /> this requirement, some sort of marker is needed to identify the level of the 60% <br /> sediment volume. The operator should devise and install such a marker in each <br /> pond. <br /> 2. Section 4.05.6(7) requires that each pond be certified by a qualified <br /> registered professional engineer. The certification report should indicate that <br /> the ponds were constructed in accordance with the designs approved in the <br /> application. <br /> • 1 <br />