((a)) ** Authority to use volunteers** The Secretary may use volunteers, as appropriate, to collect recreation fees and sell recreation passes.

((b)) ** Waiver or discount of fees; site-specific agency pass** In exchange for volunteer services, the Secretary may waive or discount an entrance fee, standard amenity recreation fee, or an expanded amenity recreation fee that would otherwise apply to the volunteer or issue to the volunteer a site-specific agency pass authorized under .section 6804(c) of this title

((c)) ** National Parks and Federal Recreational Lands Pass** In accordance with the guidelines issued under , the Secretaries may issue a National Parks and Federal Recreational Lands Pass to a volunteer in exchange for significant volunteer services performed by the volunteer.section 6804(a)(7) of this title

((d)) ** Regional multientity passes** The Secretary may issue a regional multientity pass authorized under to a volunteer in exchange for significant volunteer services performed by the volunteer, if the regional multientity pass agreement under which the regional multientity pass was established provides for the issuance of the pass to volunteers.section 6804(d) of this title