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ICC CALIFORNIA UST INSPECTOR EXAM QUESTION
BANK NEWEST 2026 ACTUAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALLA ANSWERED {400 Q & A} ALREADY
GRADED A+ | BRAND NEW! | 100% PASS
Which of the following is not a requirement specified in HSC
25283.5, which will enable a basement tank to be excluded from
regulation as a UST?
a. The owner or operator maintains a log of tank inspection
results.
b. All exterior surfaces of the tank can be monitored by direct
viewing.
c. The owner/operator conducts daily inspections of the tank.
d. The floor beneath the tank can be monitored by direct viewing.
e. All of the above are requirements. - ✔✔✔ Correct Answer > c. The
owner/operator conducts daily inspections of the tank.
HSC 6.7 25283.5
The regulations to enforce compliance of underground storage
tank systems in the state are found in?
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a.) Code of Federal Regulations, 40 CFR Part 281
b.) California Code of Regulations, Title 23, Chapter 16
c.) Code of Federal Regulations, 40 CFR Part 280
d.) California Code of Regulations, Title 23, Chapter 17 - ✔✔✔ Correct
Answer > b.) California Code of Regulations; Title 23, Chapter 16
By definition an "underground storage tank system" includes
a.) The tank, all connected piping and dispensers
b.) The tank, all connected piping, ancillary equipment and
containment system
c.) Only the tank
d.) Only tanks totally beneath the surface of the ground - ✔✔✔
Correct Answer > b.) The tank, all connected piping, ancillary
equipment and containment system
(H&SC, Sec 25281(z))
Tanks installed after July 1, 1987 with suction piping are exempt
from the requirement for secondary containment of the piping
provided all the following are met, except:
a.) No valves or pumps are installed below-grade in the suction
line.
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b.) The below-grade piping operates at less than atmospheric
pressure.
c.) The below-grade piping is sloped so that the product will
drain back into the storage tank
d.) An angle check valve or check valve is located as near to the
tank top and as close to the dispenser pump as possible. - ✔✔✔
Correct Answer > d.) An angle check valve or check valve is located
as near to the tank top and as close to the dispenser pump as
possible.
CCR Title 23, Sec 2636(a)(3)
Automatic line leak detectors shall be installed on underground
pressurized piping and shall be capable of detecting a 3-gallon
per hour leak rate at 10 psi within 1 hour with a probability of
detection of at least ______% and a probability of false alarm no
greater than _______%.
a.) 95, 5
b.) 98, 2
c.) 5, 95
d.) 2, 98 - ✔✔✔ Correct Answer > a.) 95, 5
CCR Title 23, Sec 2636(f)(2) & 2643(c)(1)
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Which agency approves a site-specific variance which allows for
an alternative method of construction or monitoring:
a.) The Regional Water Quality Board
b.) The State Water Resources Control Board
c.) The Department of Toxic Substance Control
d.) The local agency - ✔✔✔ Correct Answer > a.) The Regional Water
Quality Board
CCR Title 23, Sec 2681(a)
The written report submitted to the local agency after an
unauthorized release is required to include the following except:
a.) Description of actions taken to stop the release
b.) Cause of the release
c.) Method of disposal of released product
d.) Date on which the release was discovered - ✔✔✔ Correct Answer >
b.) Cause of the release
CCR Title 23, Sec 2652(c)
An unauthorized release which does not escape from secondary
containment only requires a record on the operator's monitoring
reports provided:
A. It did not increase the hazard of fire
ICC CALIFORNIA UST INSPECTOR EXAM QUESTION
BANK NEWEST 2026 ACTUAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALLA ANSWERED {400 Q & A} ALREADY
GRADED A+ | BRAND NEW! | 100% PASS
Which of the following is not a requirement specified in HSC
25283.5, which will enable a basement tank to be excluded from
regulation as a UST?
a. The owner or operator maintains a log of tank inspection
results.
b. All exterior surfaces of the tank can be monitored by direct
viewing.
c. The owner/operator conducts daily inspections of the tank.
d. The floor beneath the tank can be monitored by direct viewing.
e. All of the above are requirements. - ✔✔✔ Correct Answer > c. The
owner/operator conducts daily inspections of the tank.
HSC 6.7 25283.5
The regulations to enforce compliance of underground storage
tank systems in the state are found in?
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a.) Code of Federal Regulations, 40 CFR Part 281
b.) California Code of Regulations, Title 23, Chapter 16
c.) Code of Federal Regulations, 40 CFR Part 280
d.) California Code of Regulations, Title 23, Chapter 17 - ✔✔✔ Correct
Answer > b.) California Code of Regulations; Title 23, Chapter 16
By definition an "underground storage tank system" includes
a.) The tank, all connected piping and dispensers
b.) The tank, all connected piping, ancillary equipment and
containment system
c.) Only the tank
d.) Only tanks totally beneath the surface of the ground - ✔✔✔
Correct Answer > b.) The tank, all connected piping, ancillary
equipment and containment system
(H&SC, Sec 25281(z))
Tanks installed after July 1, 1987 with suction piping are exempt
from the requirement for secondary containment of the piping
provided all the following are met, except:
a.) No valves or pumps are installed below-grade in the suction
line.
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b.) The below-grade piping operates at less than atmospheric
pressure.
c.) The below-grade piping is sloped so that the product will
drain back into the storage tank
d.) An angle check valve or check valve is located as near to the
tank top and as close to the dispenser pump as possible. - ✔✔✔
Correct Answer > d.) An angle check valve or check valve is located
as near to the tank top and as close to the dispenser pump as
possible.
CCR Title 23, Sec 2636(a)(3)
Automatic line leak detectors shall be installed on underground
pressurized piping and shall be capable of detecting a 3-gallon
per hour leak rate at 10 psi within 1 hour with a probability of
detection of at least ______% and a probability of false alarm no
greater than _______%.
a.) 95, 5
b.) 98, 2
c.) 5, 95
d.) 2, 98 - ✔✔✔ Correct Answer > a.) 95, 5
CCR Title 23, Sec 2636(f)(2) & 2643(c)(1)
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Which agency approves a site-specific variance which allows for
an alternative method of construction or monitoring:
a.) The Regional Water Quality Board
b.) The State Water Resources Control Board
c.) The Department of Toxic Substance Control
d.) The local agency - ✔✔✔ Correct Answer > a.) The Regional Water
Quality Board
CCR Title 23, Sec 2681(a)
The written report submitted to the local agency after an
unauthorized release is required to include the following except:
a.) Description of actions taken to stop the release
b.) Cause of the release
c.) Method of disposal of released product
d.) Date on which the release was discovered - ✔✔✔ Correct Answer >
b.) Cause of the release
CCR Title 23, Sec 2652(c)
An unauthorized release which does not escape from secondary
containment only requires a record on the operator's monitoring
reports provided:
A. It did not increase the hazard of fire
