are pending or have been issued are null and void. (2) Allowable actions Any quiet title action not prohibited under paragraph (1) shall be filed during or before the date described in section 4(a)(1). 7. Applicable law and time extensions (a) Application of State and Federal law (1) In general This Act shall apply with respect to conclusively establishing the acceptance, scope, validity, or abandonment of a R.S. 2477 right-of-way. (2) Preemption In the case of any inconsistency or conflict between the provisions of this Act and State law, this Act shall apply in determining the acceptance, scope, validity, and abandonment of a R.S. 2477 right-of-way. (b) Extension The Secretary shall grant a 1-time extension of a deadline established by this Act, for a maximum period of 1 year, for good cause, if the claimant submits to the Secretary, not later than 30 days before the date on which the deadline expires, a written request for the extension signed by the claimant under oath or affirmation. 8. Implementation required (a) In general Subject to section 4(e)— (1) not later than 90 days after the date of enactment of this Act, the Secretary shall complete all policies, procedures, delegations, forms, and any other action necessary to implement this Act