36 C.F.R. § 72.72
(b) Prerequisites for conversion approval. Requests for permission to convert UPARR assisted properties in whole or in part to other than public recreation uses must be submitted by the recipient to the appropriate NPS Regional Director in writing. NPS will only consider conversion requests if the following prerequisites have been met:
(3) The proposal assures the provision of adequate recreation properties and opportunities of reasonably equivalent usefulness and location. Dependent upon the situation and at the discretion of NPS, the replacement property need not provide identical recreation experiences or be located at the same site, provided it is in a reasonably equivalent location. It must, however, be administered by the same political jurisdiction as the converted property. Equivalent usefulness and location will be determined based on the following criteria: