Petroleum & Chemical Safety

Underground Storage Tanks (UST)

The Division of Petroleum & Chemical Safety was created to manage the problems caused by the thousands of underground storage tank systems containing petroleum or hazardous chemicals. The division regulates petroleum and chemical storage tanks through registration to ensure the protection of public health and safety. The division has registered more than 73,000 tanks in Illinois. Other duties include issuing permits for all tank installations, removals, repairs, upgrades, relining and abandonment-in-place. Eligibility and deductibility determinations are also made to determine if a tank owner can access the leaking underground storage tank fund. Inspectors in this division respond to petroleum and chemical leaks and spills.

SUMPS – Changes Effective October 13, 2028

Technical Requirements for Underground Storage Tanks

Section 175.410 – Submersible, Under-dispenser, Transition, and Other Containment Sumps

-On or after October 13, 2028, containment sumps shall be installed where no sump currently exists.

-On or after October 13, 2028, cathodic protection in sumps shall be removed, as sumps must be maintained clean and dry as of that date.

-On or after October 13, 2028, all sumps shall be maintained clean and dry.

Contact the Division of Petroleum & Chemical Safety