; (B) a map showing specific boundaries of the proposed Tribal cultural area; and (C) a list of interested Indian Tribes that possess cultural, religious, historic, or precontact connections to the proposed Tribal cultural area. (3) Approval process (A) In general Not later than 18 months after the date on which a petition is submitted under paragraph (1), the Secretary concerned shall approve or deny the petition. (B) Failure to meet deadline (i) In general Subject to clause (ii), if the Secretary concerned does not approve or deny a petition submitted under paragraph (1) by the deadline described in subparagraph (A), the petition shall be considered to have been denied by the Secretary concerned. (ii) Extension The Secretary concerned and the 1 or more Indian Tribes that submitted the petition may mutually agree to extend the deadline for responding to the petition under subparagraph (A). (C) Approval (i) In general The Secretary concerned shall approve a petition submitted under paragraph (1) unless the Secretary concerned determines that— (I) the proposed Tribal cultural area does not meet the criteria established under subsection (a)(1); or (II) approving the petition— (aa) would violate Federal law; or (bb) is not in the public interest. (ii) Recommendations On approval of a petition submitted under paragraph (1), the Secretary concerned shall— (I) recommend that Congress designate the proposed Tribal cultural area for inclusion in the System; and (II) manage the proposed Tribal cultural area in accordance with subsection (e). (D) Denial Not later than 60 days after the date on which the Secretary concerned, as applicable, denies a petition submitted under paragraph (1) or fails to meet the applicable deadline described in subparagraph (B), the Secretary concerned shall provide to the 1 or more interested Indian Tribes that submitted the petition— (i) a written response detailing the reasons why the Secretary concerned denied the petition