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Table 23 <br />• SEDIMENTATION POND Ll - DESIGN SUMMARY <br />Drainage Area 19.50 acres <br />Runoff Volume (10-year, 24-hour event) 1.34 acre-feet <br />Runoff Storage Volume <br />Required 1.34 acre-feet <br />Actual 1.35 acre-feet <br />Sediment Volume <br />• <br />u <br />Required (1 year) 0.14 acre-feet <br />Actual (4 years) 0.61 acre-feet <br />Total Storage Capacity <br />Required (Does not include dead storage) 1.48 acre-feet <br />Actual 1.96 acre feet <br />Elevation Design Water Level <br />Elevation invert 5,220.96 feet <br />Freeboard 2.00 feet <br />Principal Spillway <br />Type: 10 inch diameter gated decant line <br />(10-year, 24-hour event) 5,224.00 feet <br />Elevation Maximum water Level <br />(25-year, 24-hour event) 5,225.00 feet <br />Elevation Design Sediment Level 5,219.40 feet <br />Elevation Top of Embankment 5,227.00 feet <br />Outlet Works <br />Emergency Spillway <br />Type: Riprapped Trapezoidal Channel <br />Elevation Invert 5,224.00 feet <br />c:~acaTtt-zl <br />05/19/95 2:13pm kep <br />170 <br />Revised - May 1995 <br />