39 CFR § 778.11 - What are the Postal Service's obligations in interstate situations?
(a) The Postal Service is responsible for:
(1) Identifying proposed direct federal development projects that have an impact on interstate areas;
(3) Making efforts to identify and notify the affected state, areawide, regional, and local officials and entities in those states that have not adopted a process under the Order or do not select the Postal Service's facility project action for review;
(4) Responding pursuant to § 778.10 if the Postal Service receives a recommendation from a designated areawide agency transmitted by a single point of contact in cases in which the review, coordination, and communication with the Postal Service have been delegated.