43 CFR §3137.60

1. (a)You must comply with the terms and conditions of the unit agreement, Federal laws and regulations, lease terms and stipulations, and BLM notices and orders;
2. (b)You must provide to BLM evidence of acceptable bonding. Acceptable bonding means a bond in an amount which is no less than the sum of the individual Federal bonding requirements for each of the NPR-A leases committed to the unit. You may also meet this requirement if you add the unit operator as a principal to lease bonds to reach the required amount; and
3. (c)The bond must be payable to the Secretary of the Interior.