1. a) the owner or operator has substituted alternate financial assurance that meets the requirements of this Subpart; or

2. b) the Agency has released the owner or operator from the requirements of this Subpart following:

   1. 1) completion of closure in compliance with Section 820.305; and
   2. 2) Agency certification of closure of the GCDD recovery facility under Section 820.306(b).

The Agency must release a trustee, bank, or other financial institution as soon as practicable after the owner or operator makes a written request to the Agency for release and demonstrates that either one of the following events has occurred: