(a) In General.—
The Secretary may solicit, receive, and consider requests from Federal or non-Federal public or private agencies, organizations, individuals, or other entities for the use of any System unit for purposes of scientific study.
(b) Criteria.—A request for use of a System unit under subsection (a) may be approved only if the Secretary determines that the proposed study—
(c) Fee Waiver.—
The Secretary may waive any System unit admission or recreational use fee in order to facilitate the conduct of scientific study under this section.