A special authorization that has been issued may be modified upon the application of the owner for such modification. Such application shall be in accordance with the provisions of this article and the procedures applicable to such application shall be the same as are applicable to an initial application for a special authorization. Notwithstanding the foregoing, no approval shall be required if the change is a modification set forth in § 270-191 as not requiring approval of a modification to a site plan. The waiver of the requirement for approval of a modification to a special permit or special approval is subject to the same conditions, and subject to the same limitations as pertain to modifications to approved site plans.