Code of Federal Regulations Title 43. Public Lands:  Interior § 43.3210.10 When does lease segregation occur?

(1) A portion of a lease is committed to a unit agreement while other portions are not committed;  or

(2) Only a portion of a lease remains in a participating area when the unit contracts. The portions of the lease outside the participating area are eliminated from the unit agreement and segregated as of the effective date of the unit contraction.