When public water and/or sewer are not yet available to a site being partitioned, the lots created through the partition process shall be of sufficient size to allow for subsurface sewage disposal and/or wells, and the partitioning approval not be granted until a redivision plan, showing how the lots can be redivided when public services become available, has been filed with the city manager. The redivision plan shall be drawn to the same scale as the tentative partition plan, referred to in sections 9-15-4 and 9-15-6 of this chapter, and shall show: a) the lot lines included in the partition being requested; b) the location of the proposed buildings; and c) the future lots that could be created to meet all of the dimensional requirements of the same when public services are available. (1996 Code § 17.80.010)