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Table TR-91-31-1 (Cont.) <br />• SEDIMENTATION POND R - As built Specifications <br />_ Sedimentation pond designed for 10-year, 24-hour event. <br />Emergency spillway designe3 for 25-year, 24-hour event. <br />- Antecedent moisture condition II <br />- Sdeighted curve number - 69 <br />- Sediment volume -0.07 Ac-Ft. <br />- Runoff volume - 0.67 Ac-Ft. <br />- Total volume - 0.74 Ac-Ft. <br />- Emergency spillway height above bottom of natural channel is less than <br />ten feet. <br />- Relative elevation top of dam - 95.1 <br />- Relative elevation top of decant - 93.7 <br />- Relative elevation crest of spillway - 93.9 <br />• -Depth of flow in spillway for 25-year, 24-hour event - 0.2 Ft. <br />- Relative elevation dewatering hole - 91.0 <br />- Diameter of dewatering hole - 1 inch <br />- Detention time - 48.1 hours <br />• <br />Ex. 29-8 <br />