ICC U11 UNDERGROUND STORAGE TANK CLOSURE
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026 |INSTANT
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1. What is the primary purpose of properly closing an
underground storage tank (UST)?
A. To increase fuel storage capacity
B. To prevent future environmental contamination
C. To reduce installation costs
D. To improve fuel flow efficiency
Rationale: Proper closure prevents leaks, soil contamination,
and groundwater pollution.
Correct Answer: B
2. Which agency primarily regulates UST closure requirements
in the United States?
A. OSHA
B. EPA
C. FEMA
D. DOT
Rationale: The Environmental Protection Agency (EPA) sets
federal UST regulations under 40 CFR Part 280.
Correct Answer: B
,3. Before closing a UST, what is the first required step?
A. Remove tank completely
B. Notify the regulatory authority
C. Paint the tank exterior
D. Fill the tank with water
Rationale: Notification ensures compliance and oversight
before closure begins.
Correct Answer: B
4. What is typically used to render a UST safe after closure?
A. Gasoline
B. Concrete slurry or inert material
C. Compressed air
D. Sand only
Rationale: Tanks are filled with inert material to prevent
collapse or vapor hazards.
Correct Answer: B
5. Which of the following is a major environmental concern
during UST closure?
A. Noise pollution
B. Soil and groundwater contamination
C. Air traffic disruption
,D. Electrical interference
Rationale: Leaking petroleum products can contaminate soil
and groundwater.
Correct Answer: B
6. What must be done to a UST before it is permanently
closed?
A. Pressurize it
B. Empty and clean it
C. Paint it red
D. Fill it with fuel
Rationale: Tanks must be emptied and cleaned of hazardous
residues.
Correct Answer: B
7. What type of documentation is required after UST closure?
A. Personal logs only
B. Closure report and inspection records
C. Tax records
D. Employee payroll forms
Rationale: Closure reports verify compliance and
environmental safety.
Correct Answer: B
, 8. What hazard is associated with vapors in a closed UST?
A. Improved fuel efficiency
B. Fire and explosion risk
C. Increased tank strength
D. Reduced corrosion
Rationale: Residual vapors can be flammable or explosive.
Correct Answer: B
9. Who is responsible for ensuring proper UST closure
procedures are followed?
A. Tank manufacturer only
B. Tank owner/operator
C. Local residents
D. Insurance company
Rationale: The owner/operator is legally responsible for
compliance.
Correct Answer: B
10. What is required if contamination is found during UST
closure?
A. Ignore it
B. Report and initiate cleanup
C. Cover it with soil
D. Paint over it
Rationale: Contamination must be reported and remediated
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026 |INSTANT
DOWNLOAD PDF
1. What is the primary purpose of properly closing an
underground storage tank (UST)?
A. To increase fuel storage capacity
B. To prevent future environmental contamination
C. To reduce installation costs
D. To improve fuel flow efficiency
Rationale: Proper closure prevents leaks, soil contamination,
and groundwater pollution.
Correct Answer: B
2. Which agency primarily regulates UST closure requirements
in the United States?
A. OSHA
B. EPA
C. FEMA
D. DOT
Rationale: The Environmental Protection Agency (EPA) sets
federal UST regulations under 40 CFR Part 280.
Correct Answer: B
,3. Before closing a UST, what is the first required step?
A. Remove tank completely
B. Notify the regulatory authority
C. Paint the tank exterior
D. Fill the tank with water
Rationale: Notification ensures compliance and oversight
before closure begins.
Correct Answer: B
4. What is typically used to render a UST safe after closure?
A. Gasoline
B. Concrete slurry or inert material
C. Compressed air
D. Sand only
Rationale: Tanks are filled with inert material to prevent
collapse or vapor hazards.
Correct Answer: B
5. Which of the following is a major environmental concern
during UST closure?
A. Noise pollution
B. Soil and groundwater contamination
C. Air traffic disruption
,D. Electrical interference
Rationale: Leaking petroleum products can contaminate soil
and groundwater.
Correct Answer: B
6. What must be done to a UST before it is permanently
closed?
A. Pressurize it
B. Empty and clean it
C. Paint it red
D. Fill it with fuel
Rationale: Tanks must be emptied and cleaned of hazardous
residues.
Correct Answer: B
7. What type of documentation is required after UST closure?
A. Personal logs only
B. Closure report and inspection records
C. Tax records
D. Employee payroll forms
Rationale: Closure reports verify compliance and
environmental safety.
Correct Answer: B
, 8. What hazard is associated with vapors in a closed UST?
A. Improved fuel efficiency
B. Fire and explosion risk
C. Increased tank strength
D. Reduced corrosion
Rationale: Residual vapors can be flammable or explosive.
Correct Answer: B
9. Who is responsible for ensuring proper UST closure
procedures are followed?
A. Tank manufacturer only
B. Tank owner/operator
C. Local residents
D. Insurance company
Rationale: The owner/operator is legally responsible for
compliance.
Correct Answer: B
10. What is required if contamination is found during UST
closure?
A. Ignore it
B. Report and initiate cleanup
C. Cover it with soil
D. Paint over it
Rationale: Contamination must be reported and remediated
