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ICC California UST Inspector Exam
Questions and Answers
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
Ans: a.) The Regional Water Quality Board
CCR Title 23, Sec 2681(a)
The regulations to enforce compliance of underground storage
tank systems in the state are found in?
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
Ans: 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
Ans: b.) The tank, all connected piping, ancillary equipment and
containment system
(H&SC, Sec 25281(z))
© 2025 All rights reserved
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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
Ans: 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
B. It did not cause any deterioration of the secondary containment
C. It was cleaned up within 8 hours of detection
D. All of the above
Ans: D. All of the above
H&SC, Sec 25294
The annual monitoring certification may be performed by:
A. A person possessing the appropriate contractors licenses
B. An individual trained and certified by the manufacturer of the
monitoring equipment
C. A designated UST operator
D. A person who meets the requirements of both a and b
Ans: D. A person who meets the requirements of both a and b
CCR Title 23, Sec 2715(i)
When an automatic tank gauge is utilized for single-walled tank
leak detection, it shall generate a post-test hard copy data report
of the following information, except:
a.) Liquid volume
b.) Fuel depth
c.) Outside air temperature
d.) Time and date of test
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Ans: c.) Outside air temperature
CCR Title 23, Sec 2643(b)(1)
If a UST system is utilizing an overfill alarm, the alarm must be
triggered to alert the transfer operator when the tank is no more
than ___________ full
a.) 85%
b.) 95%
c.) 90%
d.) 80%
Ans: c.) 90%
An automatic tank gauge is utilized for leak detection of the
______________.
a.) Tank
b.) Tank and Piping
c.) Piping
d.) Interstitial space
Ans: a.) Tank
CCR Title 23, Sec 2643(b)(1)
After completion of enhanced leak detection (ELD) test, the ELD
test results must be submitted to the _________________.
a.) The local agency
b.) The SWRCB
c.) Owner of the UST system
d.) To both the SWRCB and the local agency
Ans: d.) To both the SWRCB and the local agency
CCR Title 23, Sec 2644.1(a)(5)
A permit to operate a UST system must have all of the following
listed on the permit, EXCEPT:
a.) The state UST identification number(s)
b.) Name of the tank manufacturer and tank capacity
c.) Permit expiration date
© 2025 All rights reserved
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d.) Monitoring requirements
Ans: b.) Name of the tank manufacturer and tank capacity
CCR Title 23, Sec 2712(c)
A temporary closure is appropriate for which of the following:
a.) The UST system is empty and will be removed from service
indefinitely
b.) The UST system has ceased to store hazardous materials but
will be used within the next 12 consecutive months
c.) The UST system is unable to meet compliance requirements and
will be removed
d.) The UST system has been red-tagged
Ans: b.) The UST system has ceased to store hazardous materials but
will be used within the next 12 consecutive months
CCR Title 23, Sec 2671 & 2670
A local agency determines that a UST facility within the last year
had compliance issues. Prior to issuing a new permit or renewal to
operate an UST the local agency shall:
a.) Ask the state to assist in a joint inspection
b.) Request the owner/operator to submit a "Return to
Compliance" form.
c.) Refer to a District Attorney Investigator
d.) Inspect the facility and determine compliance
Ans: d.) Inspect the facility and determine compliance
CCR Title 23, Sec 2712(c)
All the following components require third party certification,
except:
a.) Automatic tank gauging systems
b.) Statistical inventory reconciliation methods
c.) Spill Containment lids
d.) Liquid phase out-of-tank products
Ans: c.) Spill Containment lids
© 2025 All rights reserved
ICC California UST Inspector Exam
Questions and Answers
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
Ans: a.) The Regional Water Quality Board
CCR Title 23, Sec 2681(a)
The regulations to enforce compliance of underground storage
tank systems in the state are found in?
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
Ans: 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
Ans: b.) The tank, all connected piping, ancillary equipment and
containment system
(H&SC, Sec 25281(z))
© 2025 All rights reserved
, 2 | Page
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
Ans: 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
B. It did not cause any deterioration of the secondary containment
C. It was cleaned up within 8 hours of detection
D. All of the above
Ans: D. All of the above
H&SC, Sec 25294
The annual monitoring certification may be performed by:
A. A person possessing the appropriate contractors licenses
B. An individual trained and certified by the manufacturer of the
monitoring equipment
C. A designated UST operator
D. A person who meets the requirements of both a and b
Ans: D. A person who meets the requirements of both a and b
CCR Title 23, Sec 2715(i)
When an automatic tank gauge is utilized for single-walled tank
leak detection, it shall generate a post-test hard copy data report
of the following information, except:
a.) Liquid volume
b.) Fuel depth
c.) Outside air temperature
d.) Time and date of test
© 2025 All rights reserved
, 3 | Page
Ans: c.) Outside air temperature
CCR Title 23, Sec 2643(b)(1)
If a UST system is utilizing an overfill alarm, the alarm must be
triggered to alert the transfer operator when the tank is no more
than ___________ full
a.) 85%
b.) 95%
c.) 90%
d.) 80%
Ans: c.) 90%
An automatic tank gauge is utilized for leak detection of the
______________.
a.) Tank
b.) Tank and Piping
c.) Piping
d.) Interstitial space
Ans: a.) Tank
CCR Title 23, Sec 2643(b)(1)
After completion of enhanced leak detection (ELD) test, the ELD
test results must be submitted to the _________________.
a.) The local agency
b.) The SWRCB
c.) Owner of the UST system
d.) To both the SWRCB and the local agency
Ans: d.) To both the SWRCB and the local agency
CCR Title 23, Sec 2644.1(a)(5)
A permit to operate a UST system must have all of the following
listed on the permit, EXCEPT:
a.) The state UST identification number(s)
b.) Name of the tank manufacturer and tank capacity
c.) Permit expiration date
© 2025 All rights reserved
, 4 | Page
d.) Monitoring requirements
Ans: b.) Name of the tank manufacturer and tank capacity
CCR Title 23, Sec 2712(c)
A temporary closure is appropriate for which of the following:
a.) The UST system is empty and will be removed from service
indefinitely
b.) The UST system has ceased to store hazardous materials but
will be used within the next 12 consecutive months
c.) The UST system is unable to meet compliance requirements and
will be removed
d.) The UST system has been red-tagged
Ans: b.) The UST system has ceased to store hazardous materials but
will be used within the next 12 consecutive months
CCR Title 23, Sec 2671 & 2670
A local agency determines that a UST facility within the last year
had compliance issues. Prior to issuing a new permit or renewal to
operate an UST the local agency shall:
a.) Ask the state to assist in a joint inspection
b.) Request the owner/operator to submit a "Return to
Compliance" form.
c.) Refer to a District Attorney Investigator
d.) Inspect the facility and determine compliance
Ans: d.) Inspect the facility and determine compliance
CCR Title 23, Sec 2712(c)
All the following components require third party certification,
except:
a.) Automatic tank gauging systems
b.) Statistical inventory reconciliation methods
c.) Spill Containment lids
d.) Liquid phase out-of-tank products
Ans: c.) Spill Containment lids
© 2025 All rights reserved
