220 ILCS 5/9-245: Rates; environmental fines and remediation.

In determining the rates for a public utility engaged in providing natural gas service, the Commission may not include any expenditure for fines or remediation and related activities incurred as a result of mercury spills associated with gas pressure regulators, manometers, or any other devices containing mercury in the utility's system. Any related insurance or third party recoveries must also be excluded for ratemaking purposes.