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Underground Storage Tank Owner/Operator Training and Certification (Class A, B and C Operators)

Underground Storage Tank Owner/Operator Training and Certification

Section 1524 of the Federal Energy Policy Act of 2005) required that the state of Michigan promulgate amendments to the underground storage tank rules (Rules) to require each underground storage tank facility have Class A, Class B, and Class C operators.  Candidates will need to pass a written exam in order to be certified as a Class A or Class B operator.  A test is not required for the Class C operator, but those persons must be properly trained. The exam assures that underground storage tank system operators possess the necessary knowledge regarding the proper operation of underground storage tank systems.

Operator Types

Class A Operator: This is the person who has primary responsibility to operate and maintain the underground storage tank system. For a typical gas station, it is the owner of the station or his designee. For large corporations, this is the manager or designee responsible for tank operations. The class A operator can also be designated as a Class B operator as long as he/she has passed the Class B operator exam.

Class B Operator: This designation is for the individual or individuals who implement day-to-day aspects of operating, maintaining, and record keeping for underground storage tank systems at one or more facilities. For a typical gas station, it is the owner or the person/company contracted by the owner to maintain the tanks. For large corporations, it is the employee, or person/company contracted by the corporation to maintain the tanks. A broad knowledge base is required for a Class A operator, but the Class B operator must have in-depth knowledge of tank system operation and maintenance.

Class C Operator: This is an individual who is responsible for responding to alarms or other indications of emergencies caused by spills, releases, or overfills associated with an underground storage tank system. For a typical gas station, this is the cashier. Though an exam is not required, this person must be trained in responding to releases, alarms, and emergency conditions. Training can be performed by the Class A operators, Class B operators, or third-party vendors. Class C operator training is required to be documented.




For general questions, please contact the Storage Tank Division at 517-241-8847.


For facility-specific questions, please contact the Hazardous Materials Storage Inspector that services your area, or Jeremy Britten, Storage Tank Division Manager at 517-242-7901, E-mail: