In the event a plat of a subdivision has been recorded and substantial changes are proposed which change the subdivision materially, the portion of the subdivision in which these changes are proposed must be approved and the prior plat vacated in accordance with the regulations set forth in this title. Any change in street location will require an amended plat for that portion of the plat that is affected. Unless the administrator, in the administrator's sole discretion, finds that the proposed changes materially alter the nature and character of the subdivision, amended plats are subject to the procedure as set forth in section 9.1.05 of this title. (Ord. 822, 2-23-2006, eff. 3-16-2006)