; (II) any harbor, marine terminal, or other shore side facility used principally for the movement of goods on inland waters; and (III) any port formed in accordance with applicable State or territory law. (ii) Priority In addition to the priority given under subparagraph (B), the Secretary shall give equal priority to an application for a project that would increase the availability of broadband service in a port in a rural area. (D) Identification of unserved communities (i) In general In the case of an application given the highest priority under subparagraph (A)(i), the Secretary shall confirm that each unserved rural community identified in the application is eligible for funding by— (I) conferring with and obtaining data from the Chair of the Federal Communications Commission and the Administrator of the National Telecommunications and Information Administration with respect to the service area proposed in the application; (II) reviewing any other source that is relevant to service data validation, as determined by the Secretary; and (III) performing site-specific testing to verify the unavailability of any residential broadband service in the unserved rural community. (ii) Adjustments Not less often than once every 2 years, the Secretary shall review, and may adjust through notice published in the Federal Register, the unserved communities identified under clause (i). ; and (B) in paragraph (3), by striking subparagraphs (C) and (D) and inserting the following: (C) Maximum Except as provided in subparagraph (D), the amount of any grant made under this section shall not exceed 50 percent of the development costs of the project for which the grant is provided. (D) Secretarial authority to adjust The Secretary may make grants of up to 75 percent of the development costs of the project for which the grant is provided to an eligible entity if the Secretary determines that the project serves— (i) an area of rural households described in paragraph (2)(A)(ii)