50 CFR § 29.153
When will the Service release my financial assurance?
July 17, 2020
(a) Your responsibility under the financial assurance will continue until either:
(1) The Service determines that you have met all applicable reclamation operating standards and any additional reclamation requirements that may be included in your operations permit; or
(2) A new operator assumes your operations, as provided in §29.170(b).
(b) You will be notified by the Service within 30 calendar days of our determination that your financial assurance has been released.