16 U.S.C. § 410uu–1 — Expansion of boundaries

(a) In general: The park's boundaries are expanded to include land marked for inclusion in the monument, shown on five separate maps: (1) "Hopeton Earthworks," numbered 353–80025, July 1987; (2) "High Banks Works," numbered 353–80027, July 1987; (3) "Hopewell Mound Group," numbered 353–80029, July 1987; (4) "Seip Earthworks," numbered 353–80033, July 1987; and (5) "Hopewell Culture National Historical Park, Ohio Proposed Boundary Adjustment," numbered 353/80,049, June 2006. (b) Public inspection of maps: Each of these maps must be on file and open for public inspection at the National Park Service Director's office. (c) Adjustment of boundaries: After public comment, and by publishing notice in the Federal Register, the Secretary may make minor boundary adjustments to the areas added by subsection (a) and other park areas — but all these minor adjustments together cannot make the park's total size grow more than 10% above what the old Mound City Group National Monument covered, plus the land added under subsection (a). (d) Acquisition of lands: (1) Subject to paragraph (2), the Secretary may acquire land in the areas added by subsection (a) by donation, purchase with donated or government money, or exchange. (2)(A) Land owned by Ohio or one of its local governments can only be acquired by donation or exchange. (B) Land bought by purchase must be priced using an independent appraisal of its fair market value, following the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970. (3) Land added under subsection (a)(5) can only be acquired from willing sellers.