Iowa Admin. Code r. 781-13.13
13.13(2) The treasurer may liquidate the eligible collateral pledged by a pledging bank, including, without limitation, drawing on any Letter of Credit pledged as collateral to the treasurer by a pledging bank, if the treasurer verifies that any of the following have occurred:
13.13(4) In the event the deposits of a closed bank are not purchased and assumed by another bank, the public units with uninsured deposits in the pledging bank shall notify the treasurer of the amount of any claim within 30 days of the closing. The treasurer shall implement the following procedures: