(1) Subterranean storm drains shall be designed and installed by the developer to adequately and safely drain all storm waters of a development and all surface waters reaching, or reasonably calculated to reach, said development from areas outside of its boundaries, and to ultimately drain the same to an approved watercourse.

(2) Drainage to a watercourse shall be either by the direct discharge into the same or by connection with adjacent existing storm drains already discharging into a water course and of a capacity sufficient, in the opinion of the City Engineer, to adequately and safely carry all of such additional drainage.

(3) When a proposed development may adversely impact a storm drainage system, the City Engineer may recommend to the approving authority that the developer have prepared by a registered engineer, a Storm Drainage Plan for review and approval prior to final action on the plan authorization. (Effective Dec. 1, 2013.)

(4) The storm drain system shall consist of mains of not less than twelve (12) inches in diameter, together with such manholes, catch basins, laterals, water quality and flow control facilities, and other structures, and at such grades as required by the City Engineer to conform to good drainage requirements for the area and for the topography of the development to prevent standing waters or flooding within and outside of its boundaries.