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 Underground Storage Tank Operator Training


Underground Storage Tank Operator Training

UPDATE:  Effective January 1, 2018, the DNREC Tank Management Section (TMS) will offer the required Class A and Class B UST Operator Training at two of its office locations in New Castle (391 Lukens Drive) and Dover (89 Kings Highway) during the upcoming calendar year. The main purpose of the program is to make sure UST operators know what equipment they have at their facilities and are trained to properly operate and maintain the equipment, stay in compliance with state regulations, and prevent future releases to the environment. Completion of the class certifies you as both a Class A and Class B UST operator. Pre-registration is required and must be made via e-mail to  You will receive a confirmation e-mail response once your seat has been reserved. There is currently no cost to attend the certification training class. An on-line certification option is not currently available however inquiries pertaining to certification through reciprocity can be made via e-mail to

 DNREC TMS Contact Information and Class Schedule

Effective Aug. 8, 2012, all facilities must have a trained Class A, Class B, and Class C Operator.

Types of Operators
"Class A Operator" is the person responsible for the overall operation and maintenance of the UST System. In general, this person focuses on the regulatory requirements and standards necessary to operate and maintain the UST system.

"Class B Operator" is the person responsible for the daily on-site operation and maintenance of the UST System. In general, this person operates the UST on a day to day basis complying with regulatory requirements.

"Class C Operator" is the on-site person who addresses emergencies at the facility and responds to alarms or other indications of emergencies caused by spills and releases from UST systems. The Class C Operator is not required to take the formal training class; they may be trained by the Class A or B Operator.


More Information
On Feb. 11, 2016, the Delaware Department of Natural Resources and Environmental Control, Tank Management Section (DNREC-TMS) promulgated revised Regulations Governing Underground Storage Tank Systems (UST Regulations) or (printable version).


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