25 C.F.R. § 162.523
How much compensation must be paid under a WEEL?
(a) The WEEL must state how much compensation will be paid.
(b) A WEEL must specify the date on which compensation will be due.
(c) Failure to make timely payments is a violation of the WEEL and may lead to cancellation of the WEEL.
(d) The lease compensation requirements of §§ 162.552 through 162.558 also apply to WEELs.