28-5.04   Standards for Subdivision Proposals.
   a.   All preliminary subdivision proposals shall identify the flood hazard area and the elevation of the base flood and be consistent with the need to minimize flood damage;
   b.   All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage; and,
   c.   All subdivision proposals shall have adequate drainage provided to reduce exposure to flood hazards.
   d.   In areas where base flood elevation and floodway data is not available (Zone A or unmapped streams), base flood elevation and floodway data for subdivision proposals and other proposed development (including manufactured home parks and subdivisions) greater than fifty (50) lots or five (5) acres, whichever is the lesser, shall be provided.
   e.   All subdivision plans will include the elevation of proposed structure(s) and lowest adjacent grade.  If the site is filled above the base flood elevation, the lowest floor and lowest adjacent grade elevations shall be certified by a registered professional engineer or surveyor and provided to the Floodplain Administrator.