(A) An excess storm water passage shall be provided for all storm water areas. The passage shall have the capacity to convey through the proposed development the excess storm water. The capacity for a passage shall be such that it will be able to transport the peak rate of runoff from a 100-year return frequency storm.
(B) There shall be no buildings or structures constructed within excess storm passages, however, parking lots, playgrounds and park areas, which shall not impair or endanger the water holding capability of a development shall be considered compatible uses.
(C) Appropriate land planning shall be undertaken to preserve the existing natural drainage of a proposed development as part of the excess storm water passage.
(D) Open channels shall be protected from erosion by appropriate vegetative cover, lining, or other treatment and earthen channel side slopes shall be no steeper than two to one. Open channels with lining shall have a maximum gradient on side slopes of 67% and channel side slopes steeper than 67% shall be designed as structural retaining walls.
(Ord. 14-79, passed 10-16-1979) Penalty, see § 155.99