36 C.F.R. § 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.

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