UST Operator Classes

  • Class A Operator may be the owner/operator, an employee or a contractor with general knowledge and understanding of the UST system(s) for which s/he is designated the operator, as well as the federal and state regulatory requirements that apply to the system(s).
  • Class B Operator may be the owner/operator, an employee or a contractor with in-depth knowledge and understanding of the UST system(s) for which s/he is designated the operator, and how to operate and maintain the system(s), as well as the federal and state regulatory requirements that apply to the system(s).
  • Class A/B Operator must meet the requirements for both Class A and Class B Operator.
  • Class C Operator is an on-site employee who is trained by a Class A, B or A/B Operator on UST system(s), emergency procedures, and response to alarms at the facility.

UST Operator Exam Options

Once you determine your UST Operator class, you will need to take the appropriate exam:

UST Operator ClassNumber of Exam QuestionsAllotted Running Time
A603 Hours (180 Minutes)
B603 Hours (180 Minutes)
A/B754 Hours (240 Minutes)

If you are a certified UST Operator in another state, you will be given the option of taking either one of the Exams above or a Massachusetts Reciprocity Exam for the category you choose.

The exam fee is $75. Exams may be taken online 24 hours a day, seven days a week, and must be completed in one sitting, within the allotted running time. Exams are "open book" and technical support is available at all times.