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Index of State of Delaware Business Licenses and Registrations

Underground Storage Tank Facilities (Primarily Gas Stations) Infrastructure Registrations

Installation, Retrofit, and Removal Registrations

The Underground Storage Tank (UST) compliance program oversees the installation, retrofitting, and removal of UST systems to verify the work is completed properly and by qualified, trained, and certified individuals and companies. Tanks containing heating fuel that are less than 1100 gallons are exempt from registration requirements. UST systems which are subject to the requirements of the UST compliance program can be found at gas stations, manufacturing facilities, schools, and hospitals. Please note the UST Program also issues Installation/Construction Permits and Facility/Operating Permits. If you plan to open a new facility, please check with the UST Program as early as possible so that you leave ample time get proper permits/registrations.

More Information

Department: DNREC

Division: Waste and Hazardous Substances

Office: Compliance & Permit


Registration required as long as tank is in the ground. Installation approval letters expire one year after issuance.


Applicable Laws


Tanks Compliance can be contacted by phone at 302-395-2500.


This search covers most of the frequently requested licenses, certifications, registrations, and filings that the State of Delaware requires. However, this is not a fully exhaustive list of every possible requirement. Please consult with the appropriate state agencies to find out if there are additional requirements you must fulfill.

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