35 Ill. Adm. Code 830.603
Written Cost Estimate
Section 830
Section 830.603 Written Cost
Estimate
a) The written cost estimate required pursuant to Section
830.602(a) must be based on the steps necessary to complete closure in
accordance with Section 830.213, and must include an itemization of the cost to
complete each step.
b) The operator shall revise the current cost estimate whenever a
change in the closure plan increases the cost estimate.