All sanitary sewer facilities shall be of a total gravity systems design installed in public or private street right-of-way or public easement to grades, standards, location, lengths and sizes, as approved by the Department of Environmental Quality and the City Engineer. During the tentative plat review for a subdivision, the City may require a developer to identify the intended housing types for the purpose of infrastructure planning. The City may require a demonstration that there is sufficient sewer capacity to serve the proposed number of units. If there is not sufficient planned capacity determined from the tentative plat review to accommodate the proposed number of units, the City may require a developer to remedy the deficiency before issuing any building permits. If a developer applies for a building permit for middle housing after final plat on a subdivision approved after July 1, 2022, where the intended housing type was not identified as middle housing, the City may require a developer to demonstrate there is sufficient infrastructure to serve the proposed middle housing units.