(a) No surface water drainage shall empty into a sanitary sewer.
(b) Where a subdivision is traversed by a watercourse, drainage way, channel or stream, there shall be provided a storm water easement or drainage right-of-way conforming substantially with the lines of such watercourse, and such further width or construction, or both, as will be adequate for the purpose. Parallel streets may be required in connection therewith.
(c) Where storm water drainage is reasonably accessible, the subdivider or developer shall be connected with such storm drainage system and shall do all grading and provide all drainage structures that are necessary to properly carry the water to the storm drainage system. Design and construction of drainage structures shall be according to City standards.
(d) Where a storm drainage system is not accessible, the subdivider or developer shall do all grading and provide all drainage structures that are necessary to properly retain, detain, and carry the water to locations that are acceptable to the City Engineer. Paved drainage ditches, storm sewers, retention basins, detention basins, swales, gravel pits, or other similar storm water management facilities of adequate size shall be required.