35 Ill. Adm. Code 807.623
Biennial Revision of Cost Estimate
Section 807
Section 807.623Â Biennial
Revision of Cost Estimate
a)Â Â Â Â Â Â Â Â The operator must revise the current cost estimate at least
once every two years. The revised current cost estimate must be filed on or
before the second anniversary of the filing or last revision of the current
cost estimate.
b)Â Â Â Â Â Â Â Â The operator must review the closure and post-closure care
plans prior to filing a revised cost estimate in order to determine whether
they are consistent with current operations and regulations. The operator must
either certify that the plans are consistent, or must file an application
reflecting new plans.
c)Â Â Â Â Â Â Â Â The operator must prepare new closure and post-closure cost
estimates reflecting current prices for the items included in the estimates.Â
The operator must file revised estimates even if the operator determines that
there are no changes in the prices.