to access the parcels each party acquires in the exchange. (2) Public access The reciprocal easements exchanged under paragraph (1) shall provide for public access. (3) Cost-share agreement The Secretary and the Alaska Mental Health Trust may enter into a separate cost-share agreement to cover the cost of road maintenance with respect to the reciprocal easements exchanged under paragraph (1). (e) K–3 parcel landfill buffer (1) In general As a condition of the exchange under subsection (a), in conveying the parcel of non-Federal land described in section 3(4)(C) to the United States, the Alaska Mental Health Trust shall grant to the United States a 300-foot conservation easement abutting that parcel along the interface of the parcel and the City of Ketchikan landfill (as in existence on the date of enactment of this Act), as generally depicted on map 1. (2) Development and ownership The conservation easement described in paragraph (1) shall remain undeveloped and in the ownership of the Alaska Mental Health Trust. (3) Equalization The value of the conservation easement described in paragraph (1) shall be included in the value of the non-Federal land for purposes of equalizing the values of the Federal land and the non-Federal land under subsection (j). (f) Research easements (1) In general In order to allow time for the completion of research activities of the Forest Service that are ongoing as of the date of enactment of this Act, in conveying the Federal land to the Alaska Mental Health Trust under subsection (a), the Secretary shall reserve research easements for the following Forest Service study plots (as in existence on the date of enactment of this Act): (A) The Sarkar research easement study plot on the parcel of Federal land described in section 3(2)(B), as generally depicted on map 8, to remain in effect for the 10-year period beginning on the date of enactment of this Act. (B) The Naukati commercial thinning study plot on the parcel of Federal land described in section 3(2)(B), as generally depicted on