Petersburg National Battlefield Boundary Modification Act - Modifies the boundary of Petersburg National Battlefield in Virginia to include the properties identified on the map titled "Petersburg National Battlefield Boundary Expansion," and dated June 2007.
Authorizes the Secretaries of the Interior and the Army to transfer the administrative jurisdiction for approximately 1.171 acres under the jurisdiction of the Department of the Interior within the boundary of the Petersburg National Battlefield in exchange for approximately 1.170 acres under the jurisdiction of the Department of the Army within the boundary of the Fort Lee Military Reservation adjacent to the Battlefield.
Requires the conveyed land to be included within the boundary of Petersburg National Battlefield.