; and (ii) may make recommendations to the local coordinating entity for revisions to the management plan. (B) Deadline Not later than 180 days after receiving a revised management plan, the Secretary shall approve or disapprove the revised management plan. (5) Amendments (A) In general An amendment to the management plan that substantially alters the purposes of the National Heritage Area shall be reviewed by the Secretary and approved or disapproved in the same manner as the original management plan. (B) Implementation The local coordinating entity shall not use Federal funds authorized by this Act to implement an amendment to the management plan until the Secretary approves the amendment. (6) Authorities The Secretary may— (A) provide technical assistance under the authority of this Act for the development and implementation of the management plan; and (B) enter into cooperative agreements with interested parties to carry out this Act. 6. Evaluation; report (a) In general Not later than 3 years before the date on which authority for Federal funding terminates for the National Heritage Area under this Act, the Secretary shall— (1) conduct an evaluation of the accomplishments of the National Heritage Area; and (2) prepare a report in accordance with subsection (c). (b) Evaluation An evaluation conducted under subsection (a)(1) shall— (1) assess the progress of the local coordinating entity with respect to— (A) accomplishing the purposes of the authorizing legislation for the National Heritage Area; and (B) achieving the goals and objectives of the approved management plan for the National Heritage Area; (2) analyze the Federal, State, Tribal, and local, and private investments in the National Heritage Area to determine the impact of the investments