35 Ill. Adm. Code 845.910
Upgrading Financial Assurance
Section 845.910 Upgrading Financial Assurance
a) The owner or
operator must increase the total amount of financial assurance to equal or
exceed the current cost estimate within 60 days after either of the following
occurrences:
1) An increase in the
current cost estimate; or
2) A decrease in
the value of a trust fund.
b) The owner or
operator of a CCR surface impoundment must make annual adjustments for
inflation if required under Section 845.930 or 845.940.