; (II) data collected through crowd sourcing of public input regarding mapping accuracy of proposed service area; and (III) site specific testing where mapping data is contested as incorrect; and (iv) post on the Commission’s website and publish in the Federal Register the proposed service area and provide the public a period of at least 45 days after Federal Register publication to submit comments, including with information that the Commission shall keep confidential upon request of the commenting party, to the Commission on the proposed service area. (d) Ineligible uses of grant funds The Commission shall not award a grant, or other assistance for the deployment of broadband-capable infrastructure by a service provider that would be used to provide retail fixed terrestrial broadband service and that would overbuild or otherwise duplicate broadband-capable infrastructure that another service provider is using to provide retail fixed terrestrial broadband service in that same area as identified consistent with subsection (c)(4), except that any other proposed area covered by the same application as the ineligible area and that is identified as unserved consistent with subsection (c)(4) shall remain eligible for a grant or other such assistance. (e) Public notice The Commission shall establish a process through which, before the Commission awards a grant to such eligible partnership, members of the public and or any service provider— (1) are notified that the Commission is considering awarding a grant to an eligible partnership for a proposed broadband project; (2) are notified they may participate in a challenge process to address claims about the eligibility of the area for a grant based upon existing or already-planned provision of retail fixed terrestrial broadband services