; and (B) not later than 30 days after the date on which the claim is filed, providing, or reasonably attempting to provide, written notice of the claim to all owners of land contiguous to the boundary of the claimed right-of-way. (2) Attempted notice The reasonable attempt of a claimant to provide written notice under paragraph (1)(B) shall be considered to be sufficient notice under this subsection if the claimant files with Secretary verification of the reasonable attempt under written oath or affirmation. (3) Exception Notwithstanding paragraph (1), a claimant shall be considered to have given sufficient notice under this subsection if the claimant provides notice of an intent to file suit with respect to the claimed R.S. 2477 right-of-way under section 2409a(m) of title 28, United States Code, on or after the date of the enactment of this Act. (e) Effect of failure To meet filing deadline or requirements If a claimant fails to comply with the requirements of— (1) subsection (a), the failure shall be considered to be an automatic irrevocable abandonment of any R.S. 2477 right-of-way claim