43 C.F.R. § 3120.52 – Payments required.

(a) Payments must be made in accordance with 43 CFR 3103.11.
(b) Each winning bidder must submit, by the close of official business hours on the day of the sale for the parcel, or such other time as may be specified by the authorized officer:
1. (1) The minimum bonus bid as specified in § 3103.1 of this chapter;
2. (2) The total amount of the first year's rental; and
3. (3) The processing fee for competitive lease applications found in the fee schedule in § 3000.120 of this chapter for each parcel.
(c) The winning bidder must submit the balance of the bonus bid to the proper BLM office within 10 business days after the last day of the competitive auction.