A. All detention ponds shall be designed to hold the 100-year, 24-hour frequency storm runoff.
B. All ponds shall have a designated overflow spillway. The overflow spillway shall, as a minimum, be capable of safely discharging the peak runoff entering the facility from a 100-year, 24-hour frequency design storm.
C. All water containment structures, which have water open to the air, shall empty within seventy two (72) hours either through percolation into the soil or through outlet structures designed to ensure a controlled release of water that is not in excess of the flows predevelopment.
D. Ponding areas used in drainage facilities shall be landscaped. At a minimum, the landscaping shall consist of sod or other vegetation for the slopes and of a rock lined bottom. (Ord. 2007-06, 8-14-2007)