; payments (1) In general The Secretary may enter into an agreement with a sponsor and make payments to the sponsor, on request of the sponsor, to carry out emergency watershed protection measures. (2) Requirements (A) Project timelines (i) In general Following a natural disaster or natural occurrence that necessitates the carrying out of emergency watershed protection measures, the Secretary shall execute agreements under paragraph (1) as expeditiously as possible. (ii) Timeline A sponsor that has entered into an agreement under paragraph (1) shall complete all emergency watershed protection measures not later than 2 years after the conclusion of the applicable natural disaster or natural occurrence, as determined by the Secretary, that necessitated the carrying out of those measures. (iii) Continued monitoring A sponsor that has entered into an agreement under paragraph (1) may monitor, maintain, repair, or replace emergency watershed protection measures for a period of not more than 3 years following the conclusion of the natural disaster or natural occurrence, as determined by the Secretary, that necessitated the carrying out of those measures when failure to do so would result in unacceptable risk to National Forest System land or downstream water users. (B) Payments The Secretary, in accordance with an agreement entered into under paragraph (1)— (i) may make partial payments prior to completion of the applicable project; and (ii) shall make final payment for the project not later than 30 days after the date on which the project is completed. (d) Waived matching requirements The Secretary shall waive any matching requirements for payments made under subsection (c)(1). (e) Liability (1) In general A sponsor that carries out emergency watershed protection measures pursuant to an agreement under subsection (c)(1) shall not— (A) be required to indemnify the United States for any liability resulting from carrying out emergency watershed protection measures pursuant to that agreement