Section 51.58 - What actions may or must the concessioner take with respect to a leasehold surrender interest?The concessioner:
(a) May encumber a leasehold surrender interest in accordance with this part, but only for the purposes specified in this part;(b) Where applicable, must transfer in accordance with this part its leasehold surrender interest in connection with any assignment, termination or expiration of the concession contract; and(c) May relinquish or waive a leasehold surrender interest.