Section 1243.100 - What standards must my ONRR-specified surety instrument meet?(a) An ONRR-specified surety instrument must be in a form specified in ONRR instructions. ONRR will give you written information and standard forms for ONRR-specified surety instrument requirements.(b) ONRR will use a bank-rating service to determine whether a financial institution has an acceptable rating to provide a surety instrument adequate to indemnify the lessor from loss or damage.(1) Administrative appeal bonds must be issued by a qualified surety company which the Department of the Treasury has approved.(2) Irrevocable letters of credit or certificates of deposit must be from a financial institution acceptable to ONRR with a minimum 1-year period of coverage subject to automatic renewal up to 5 years.