1|Page
CLASS A/B OPERATOR UNDERGROUND STORAGE EXAM 2025
LATEST 2025 ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!||
Tank tightness testing, or another test of equivalent performance,
shall be capable of detecting X gallon per hour leak rate from any
portion of the tank while accounting for the effects of thermal
expansion or the contraction of the product, vapor pockets, tank
deformation, evaporation or condensation, and the location of the
water table. X is: - ANSWER-0.1 gallons per hour
MUSTR requires that X soil borings to be taken as close as
practical to the bottom of the UST, but no more than 5 feet away
from the tank, nor more than 2 feet below the tank. X is: -
ANSWER-2 soil borings
The results of site assessments conductedper MUSTR R 29.2155
are required to be kept by the owner for not less than X years. X
is: - ANSWER-3 years
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Which National Leak Prevention Association Standard on lining of
USTs is adopted by reference in the MUSTR? - ANSWER-631
MUSTR requires what to happen with a UST before it is removed
from the ground or closed in place? - ANSWER-Is registered and
all fees are paid
When using secondary containment with interstitial monitor must
be checked at least once every... - ANSWER-30 days
A manual tank gauge stick must be marked to the nearest: -
ANSWER-1/8 inch
Records of tank and piping tightness testing should be maintained
for: - ANSWER-5 years
Class C Operators should know: - ANSWER-How to respond to
emergencies at the facility
, 3|Page
If LARA determines that a UST system is out of compliance with
state and federal regualtions, the __________ for that UST
system must. be retrained. - ANSWER-Class A Operator
Which UST operators are responsible for maintaining compliance
with federal, state, and local regulations? - ANSWER-Class A
Operator
Which description best describes a Class B Operator? -
ANSWER-Individuals focused on day-to-day aspects of operating,
maintaining, and record keeping at the locations he or she is
responsible for
Class A Operators must take and pass the ICC Class A Operator
Exam every _______. - ANSWER-5 years
How often must Class B Operators conduct a site inspection of
the facility to determine compliance? - ANSWER-Quarterly
CLASS A/B OPERATOR UNDERGROUND STORAGE EXAM 2025
LATEST 2025 ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!||
Tank tightness testing, or another test of equivalent performance,
shall be capable of detecting X gallon per hour leak rate from any
portion of the tank while accounting for the effects of thermal
expansion or the contraction of the product, vapor pockets, tank
deformation, evaporation or condensation, and the location of the
water table. X is: - ANSWER-0.1 gallons per hour
MUSTR requires that X soil borings to be taken as close as
practical to the bottom of the UST, but no more than 5 feet away
from the tank, nor more than 2 feet below the tank. X is: -
ANSWER-2 soil borings
The results of site assessments conductedper MUSTR R 29.2155
are required to be kept by the owner for not less than X years. X
is: - ANSWER-3 years
,2|Page
Which National Leak Prevention Association Standard on lining of
USTs is adopted by reference in the MUSTR? - ANSWER-631
MUSTR requires what to happen with a UST before it is removed
from the ground or closed in place? - ANSWER-Is registered and
all fees are paid
When using secondary containment with interstitial monitor must
be checked at least once every... - ANSWER-30 days
A manual tank gauge stick must be marked to the nearest: -
ANSWER-1/8 inch
Records of tank and piping tightness testing should be maintained
for: - ANSWER-5 years
Class C Operators should know: - ANSWER-How to respond to
emergencies at the facility
, 3|Page
If LARA determines that a UST system is out of compliance with
state and federal regualtions, the __________ for that UST
system must. be retrained. - ANSWER-Class A Operator
Which UST operators are responsible for maintaining compliance
with federal, state, and local regulations? - ANSWER-Class A
Operator
Which description best describes a Class B Operator? -
ANSWER-Individuals focused on day-to-day aspects of operating,
maintaining, and record keeping at the locations he or she is
responsible for
Class A Operators must take and pass the ICC Class A Operator
Exam every _______. - ANSWER-5 years
How often must Class B Operators conduct a site inspection of
the facility to determine compliance? - ANSWER-Quarterly
