Ill. Admin. Code tit. 8, § 900.706
a) A financial institution issuing a surety instrument evidencing financial responsibility for closure of a livestock waste lagoon becomes liable on the surety instrument when a lagoon is removed from service and:
1) The owner fails to submit the lagoon closure plan required by Section 900.608 of this Part and:
3) The owner fails to comply with an approved lagoon closure plan and:
b) The Department must provide notice to the financial institution providing surety for the lagoon:
c) Within 30 days after notice of liability from the Department, the financial institution must either assume liability for closure of the lagoon and notify the Department of its election to assume liability, or deposit the amount for which it is liable in connection with the lagoon into an account from which the Department is authorized to disburse funds for the purpose of closing the lagoon.
1) If the financial institution assumes liability for closure of the lagoon, it must submit a lagoon closure plan that meets the requirements of Section 900.608 of this Part within 60 days after notifying the Department of its election. Notwithstanding the financial institution's assumption of liability for closure of the lagoon, the Department may require the financial institution to deposit funds up to the amount for which the financial institution is liable under the surety instrument into an account from which the Department is authorized to disburse funds for the purpose of closing the lagoon if: