; and (iii) have demonstrated support for the designation of the proposed National Heritage Area; (F) has a potential management entity to work in partnership with the individuals and entities described in subparagraph (E) to develop the proposed National Heritage Area while encouraging State and local economic activity; and (G) has a conceptual boundary map that is supported by the public. (4) Report (A) In general For each study carried out under paragraph (1), the Secretary shall submit to the Committee on Energy and Natural Resources of the Senate and the Committee on Natural Resources of the House of Representatives a report that describes— (i) the findings of the study; and (ii) any conclusions and recommendations of the Secretary. (B) Timing (i) Studies carried out by the Secretary With respect to a study carried out by the Secretary in accordance with paragraph (2)(A)(i), the Secretary shall submit a report under subparagraph (A) not later than 3 years after the date on which funds are first made available to carry out the study. (ii) Studies carried out by other interested parties With respect to a study carried out by interested individuals or entities in accordance with paragraph (2)(A)(ii), the Secretary shall submit a report under subparagraph (A) not later than 180 days after the date on which the Secretary certifies under paragraph (2)(B) that the study meets the requirements of paragraph (3). (b) Designation (1) In general An area may be designated as a National Heritage Area only by an Act of Congress. (2) Designation On receipt of a report under subsection (a)(4) recommending the designation of a proposed National Heritage Area as a National Heritage Area, Congress may designate— (A) as a National Heritage Area the proposed National Heritage Area that is the subject of the relevant feasibility study