Procedures for the amendment of the conditional use permit shall be the same as for the original permit application, with the exception that minor changes thereto, as determined by the Zoning Administrator, shall not require the resubmission of a new conditional use permit application and may be approved by the Zoning Administrator. "Minor changes" to a conditional use permit shall include, but not be limited to, alterations or additions which do not increase the gross floor area of a building or the size of a structure by more than ten (10) percent at the time of application for an amendment and which do not otherwise modify the basic use or physical characteristics of the site.