For those surface mines that are operating under a valid city of Auburn permit that has not expired, and were limited to a five-year permit, the permit shall automatically be extended by an additional five years without the need for revisions to the existing permit or additional hearings and, if located within the city’s comprehensive plan designated mineral resource area, shall be deemed the initial approval of a master permit under ACC 18.62.080. At the end of the 10-year period any master permit may continue in effect pursuant to the provisions of ACC 18.62.080, and any other permits may be renewed pursuant to the provisions of ACC 18.62.080. (Ord. 5060 § 1, 1998.)