(A) Whenever storage and controlled release of stormwater is required for existing developed parcels, and where improvements upon these parcels were constructed prior to 1976, that storage and the required controlled release rate shall apply to the net increase in the amount of runoff since January 1, 1976.
(B) (1) Any area proposed for development, consisting of a tract of land of 3 or more acres in common ownership or interest and upon which phased development is proposed, shall be required to provide a combination of storage and controlled release of stormwater runoff for future development of the entire tract in accordance with the city subdivision regulations.
(2) Where a subdivision plat or a planned industrial/commercial development involves new lots more than 2 acres in size for commercial or industrial purposes, the developer/owner shall provide for storage and controlled release of stormwater runoff in accordance with the city subdivision regulations.
(3) Construction shall include implementation of sufficient and enforceable covenants upon the land. The form of covenant shall be approved by the City Attorney, and the substance of the covenant shall reflect the approved overall stormwater detention plan for the site.