; (2) make recommendations for revisions to the management plan; and (3) not later than 180 days after the date of receipt of a proposed revision to the management plan, approve or disapprove the proposed revision. (f) Amendments (1) In general The Secretary shall review and approve or disapprove each amendment to the management plan that the Secretary determines may substantially alter the purposes of the Heritage Area. (2) Use of funds Funds made available under this Act shall not be expended by the local coordinating entity to implement an amendment described in paragraph (1) until the Secretary approves the amendment. (g) Effect of inaction If the Secretary does not approve or disapprove a management plan, revision, or change within 180 days after it is submitted to the Secretary, then the management plan, revision, or change shall be deemed to have been approved by the Secretary. 6. Authorities, duties, and prohibition of the local coordinating entity (a) Authorities To prepare and carry out the management plan, the local coordinating entity may use funds made available under this Act to— (1) make grants to— (A) political jurisdictions; (B) nonprofit organizations; and (C) other parties located in the Heritage Area; (2) enter into cooperative agreements with, or provide technical assistance to— (A) political jurisdictions; (B) nonprofit organizations; (C) Federal agencies; and (D) other interested parties; (3) hire and compensate staff who have demonstrated expertise in the fields of— (A) cultural, natural, and historical resources conservation; (B) economic and community development; (C) forestry planning; or (D) heritage planning; (4) obtain funds from any source (including a program that has a cost-sharing requirement); (5) contract for goods or services; and (6) support activities of partners, and any other activities, that— (A) further the purposes of the Heritage Area