; and (iv) no more than one adjustment may be made under this subparagraph in any 15-year period. (c) Payments Payments under subsection (b)(3) shall— (1) be due— (A) except as provided in subparagraph (B), 60 days after the end of the applicable quarter; and (B) in the case of the last quarter of each calendar year (or the last quarter before the retained use estate expires), 90 days after the end of the calendar year (or the end of the retained use estate in the year that the retained use estate expires); (2) be based on actual gross revenues for the preceding quarter; (3) in the case of a payment due under paragraph (1)(B), include any adjustment that may be required after an audit of the gross annual revenues for the preceding year; and (4) be deposited into the General Treasury. (d) Definitions In this section— (1) each of the terms retained use estate and resort has the meaning given such term in section 1 of Public Law 111–261 ( 16 U.S.C. 398d note); and (2) the term grantor means the holder of the retained use estate.