The period specified in PMC 17.40.010 may be extended by the Hearing Examiner upon application of the person maintaining such sign if the Hearing Examiner finds that such an extension is necessary for the preservation of substantial property rights of the applicant. The application for the extension shall be made in writing with the City Planner within 10 days after notice to remove the sign has been issued by the Building Official. [Ord. 3790 § 8, 2006; Code 1970 § 17.15.040.]