An application for a proposed development approval or a building permit shall indicate that one of the following requirements has been met:
(A) Capacity exists in the existing wastewater collection system and at the city wastewater treatment facility to serve the project or the first phase of the project. Determination of the existence of capacity shall be based upon estimated demand by the proposed project, consideration of other approved but not built developments to be served and the actual capacity authorized by operating permit and the actual flow at the time of application; or
(B) Capacity shall exist at the time of occupancy of each phase concurrent with the need. Calculation shall consider the projected flow requirements compared to actual flow, committed flow and the permitted capacity of the WWTP.