(a) The subdivider shall construct all necessary facilities, including underground pipes, inlets, catch basins, open drainage ditches, or controlled run-off as determined by the City Engineer, to provide for the adequate disposal of subsurface and surface water and for the maintenance of natural drainage courses. Storm drainage design calculations shall be performed and facilities designed in accordance with the standards of the City of Defiance Engineering Handbook.
(b) Where an adequate public storm sewer is available at the plat boundary, the subdivider shall construct a storm sewerage system and connect with such storm sewer line.
(1) If such storm sewerage system is not accessible, natural drainage channels with easements of adequate width shall be provided, as determined by the City Engineer and approved by the Planning Commission.
(2) Paved gutters, storm sewers, or controlled run-off, or any combination thereof, shall be required if velocities of flow are greater than those specified in the City of Defiance Engineering Handbook or cause destructive erosion.
(3) Storm drainage, including drain tiles around basements, shall not be permitted to discharge into any sanitary sewer facility, but shall connect to a drainage outlet approved by the City Engineer.
(c) Storm water management requirements pursuant to Chapter 1174 Storm Water Management Regulations shall apply.
(Ord. 7675. Passed 11-11-14.)