A special use permit shall be subject to the plans and other conditions upon the basis of which it was granted. Unless a different termination date is prescribed, the permit shall terminate one year from the effective date of its granting unless substantial development or actual commencement of authorized activities has occurred, or if there is a cessation of use or occupancy for two (2) years. However, such period of time may be extended by the Planning Commission for one year, without public notice, upon written request filed at any time before the permit has expired and upon a showing of unusual hardship not caused by the owner or applicant. (Ord. 1691 §1(part), 1982)