Class A/B Operator for Underground Storage Tank Exam
Questions and Correct Answers
Question 1
An automatic tank gauge must be able to detect a leak of X gallons per hour. X is:
Correct Answer
0.2 gallons per hour
Question 2
Which UST operators are responsible for maintaining compliance with federal, state, and local regulations?
Correct Answer
Class A Operator
Question 3
The Class A and Class B certification must be renewed every:
Correct Answer
5 years
Page 1 of 22
,Question 4
A spill catchment basin or spill bucket is simply a bucket used to dispose of oil-absorbent materials and clean up materials
used after a spill has occurred.
Correct Answer
False
Question 5
Which description best describes a Class B Operator?
Correct Answer
Individuals focused on day-to-day aspects of operating, maintaining, and record keeping at the locations he or she is
responsible for
Question 6
A manual tank gauge stick must be marked to the nearest:
Correct Answer
1/8 inch
Question 7
A Class B operator shall not be responsible for more than the following facilities:
Correct Answer
45 facilities
Page 2 of 22
, Question 8
Stage I vapor recovery is a method of preventing vapors from escaping into the enviornment by doing what?
Correct Answer
During the fuel delivery process the fuel tanker returns vapors back into the delivery truck
Question 9
The operator shall notify the DEQ of a confirmed release upon removal of an UST and visual evidence showing:
Correct Answer
Either there is visibly contaminated groundwater in the tank cavity or there is visibly contaminated soil in the tank cavity
and/or soil removed from the tank cavity
Question 10
Pressurized underground piping that routinely contains regulated substances shall be monitored for releases in a manner
that meets what requirements?
Correct Answer
Be equipped with a line leak detector, and have an annual line tightness test
Question 11
To permanently close a tank, an owner and operator shall:
Correct Answer
Remove the tank from the ground, Fill with an inert solid if removal jeopardizes the building structure integrity, and
Empty and clean the tank by removing all liquids and accumulated sludge and purge it of all vapors
Page 3 of 22
Questions and Correct Answers
Question 1
An automatic tank gauge must be able to detect a leak of X gallons per hour. X is:
Correct Answer
0.2 gallons per hour
Question 2
Which UST operators are responsible for maintaining compliance with federal, state, and local regulations?
Correct Answer
Class A Operator
Question 3
The Class A and Class B certification must be renewed every:
Correct Answer
5 years
Page 1 of 22
,Question 4
A spill catchment basin or spill bucket is simply a bucket used to dispose of oil-absorbent materials and clean up materials
used after a spill has occurred.
Correct Answer
False
Question 5
Which description best describes a Class B Operator?
Correct Answer
Individuals focused on day-to-day aspects of operating, maintaining, and record keeping at the locations he or she is
responsible for
Question 6
A manual tank gauge stick must be marked to the nearest:
Correct Answer
1/8 inch
Question 7
A Class B operator shall not be responsible for more than the following facilities:
Correct Answer
45 facilities
Page 2 of 22
, Question 8
Stage I vapor recovery is a method of preventing vapors from escaping into the enviornment by doing what?
Correct Answer
During the fuel delivery process the fuel tanker returns vapors back into the delivery truck
Question 9
The operator shall notify the DEQ of a confirmed release upon removal of an UST and visual evidence showing:
Correct Answer
Either there is visibly contaminated groundwater in the tank cavity or there is visibly contaminated soil in the tank cavity
and/or soil removed from the tank cavity
Question 10
Pressurized underground piping that routinely contains regulated substances shall be monitored for releases in a manner
that meets what requirements?
Correct Answer
Be equipped with a line leak detector, and have an annual line tightness test
Question 11
To permanently close a tank, an owner and operator shall:
Correct Answer
Remove the tank from the ground, Fill with an inert solid if removal jeopardizes the building structure integrity, and
Empty and clean the tank by removing all liquids and accumulated sludge and purge it of all vapors
Page 3 of 22
