32 Pa. Stat. § 5006
Interests in real property to be acquired pursuant to the provisions of this act shall be designated by the Department of Conservation and Natural Resources, the Department of Agriculture or a local government unit, whichever is acquiring them. After such designation, the said interests shall not be acquired until a public hearing is held and after notice to all owners of said interests in real property and to any local government unit in which land is situate, at which hearing the department or local government unit concerned shall set forth the interests to be taken and their proposed open space benefits. At the public hearing persons and municipalities affected by the proposed acquisition of interests in real property shall have an opportunity to present relevant evidence.
32 P.S. § 5006