43 C.F.R. § 3206.10
What must I do for BLM to issue a lease?
Before BLM issues any lease, you must:
(a) Accept all lease stipulations;
(b) Make all required payments to BLM;
(c) Sign a unit joinder or waiver, if applicable; and
(d) Comply with the maximum limit on acreage holdings (see §§ 3206.12 and 3206.16).