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• <br />DRAINAGE CRITERIA MANUAL (V. 3) <br />SEDIMENT CLEAN-OUT LEVEL <br />(INVERT OF LOWEST ORIFICE; <br />AT 5D% OF STORAGE VOLUME) <br />S' (OR LARGER) PVC PERFORATED <br />Q. PIPE (PERFORATIONS SIZED <br />TO DRAIN VOLUME BELOW EMERGENCY <br />SPILLWAY IN 40 HOURS) <br />BASIN <br />EMBANKMENT <br />• <br /> <br />30R <br />FLITTER <br />1 <br />B' (OR LARGER) PVC <br />8D' ELBOW <br />CONSTRUCTION BEST MANAGEMENT PRACTICES <br />700 YR (OR LARGER) <br />EMERGENCY 8PILL AY CREST (BEYOND) <br />(SHALL BE PROTECTED WITH RIPRAP) <br />30R <br />FLATTER <br />t RIPRAP <br />APRON <br />B' (OR LARGER) PVC OUTLET PIPE <br />0.5% MIN SLGPE <br />Figure C-1SA-Temporary Sediment Basin Outlet Detail <br />C-48 <br />9-1-99 <br />Urban Drainage and Flood Control District