agency on airport grounds due to a terminal development or renovation project at such airport, but such costs shall be limited to the replacement of existing work space elements (including any associated in-kind facility or equipment within or immediately adjacent to such terminal development or renovation project at such airport) for which development costs are eligible costs under this section. . 644. Airport infrastructure resilience pilot program (a) Establishment (1) Establishment (A) In general Not later than 1 year after the date of enactment of this section, the Secretary shall establish a pilot program to provide competitive grants to eligible airport sponsors for the planning, design, and construction of projects that meet the requirements described in subparagraph (B). (B) Project requirements described The requirements described in this subparagraph, with respect to a project, are the following: (i) The project is on airport property or other property owned exclusively by the eligible airport sponsor with good title and without encumbrance, as described on an Airport Layout Plan or included in the airport land inventory in the case of properties remote from the airport. (ii) The project is for the exclusive benefit of and use by the airport. (iii) The project will reduce the vulnerability of airport infrastructure to any of the following: (I) Long-term risks to the land surface, subsurface, and atmosphere due to changing conditions, such as inundation caused by— (aa) sea level rise