ICC CALIFORNIA UST SERVICE TECHNICIAN EXAM
QUESTIONS AND CORECT VERIFIED DETAILED
ANSWERS 2025
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 - Answer- 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 - 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 - Answer- b.) The tank, all connected piping,
ancillary equipment and containment system
(H&SC, Sec 25281(z))
UDC was required at time of installation for all systems installed after?
January 1, 2000
,July 1, 2005, service techs shall possess or work under someone who has a current certification
indicating he or she has passed the?
ICC UST Service Technician Exam
ICC cert must be renewed every?
24 months
Service techs must possess or be employed by a person who has the appropriate contractor's license
unless?
The individual has a tank testing license
Service tech is defined by any individual who?
Tests UST monitoring equipment, trouble shoots UST systems, and/or installs UST monitoring
equipment.
If the manufacturer training no longer exist, the local agency may?
Approve comparable alternate training .
UST includes?
Tank and connected piping
What is considered a UST?
A petroleum underground storage tank.
What UST system meets the requirements for secondary containment?
Doubled wall tanks
According to title 23; the following piping components if installed after July 1, 1987 must have
secondary containment.
Pressured product piping
What is considered "pipe" on tanks installed after July 1, 2003?
Pressured product piping and below ground vapor recovery.
Under dispenser containment (UDC) was required for all existing UST systems by
December 31, 2003
What system is for exchanging gas vapors in a storage tank and product in a fuel delivery truck
Stage 1 vapor recovery
Which approved method for non-visual monitoring for existing UST systems.
Statistical Inventory Reconciliation (SIR)
,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 - 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
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 - Answer- 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 - Answer- 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 - Answer- 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% - Answer- c.) 90%
An automatic tank gauge is utilized for leak detection of the ______________.
a.) Tank
b.) Tank and Piping
c.) Piping
d.) Interstitial space - Answer- a.) Tank
CCR Title 23, Sec 2643(b)(1)
ATG must be capable for detecting a release of?
0.2 gallons per hour
What is no longer an approved method for non-visual monitoring on existing UST systems?
Manual inventory reconciliation.
Automatic line leak detectors installed on underground piping with secondary containment shall be
capable of detecting a leak of ?
3 gallons per hour at 10 psi
How often should ATG be programmed to test the tank?
At least monthly
According to PEI RP 300, a combustible gas can be used to?
Detect vapor leaks in a vapor recovery system.
According to PEI RP 300, a written scope of work for vapor recovery installation should include?
Construction plans
Positive shut off overfill protection device must stop the flow of fuel when the tank is no more then?
95% full
QUESTIONS AND CORECT VERIFIED DETAILED
ANSWERS 2025
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 - Answer- 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 - 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 - Answer- b.) The tank, all connected piping,
ancillary equipment and containment system
(H&SC, Sec 25281(z))
UDC was required at time of installation for all systems installed after?
January 1, 2000
,July 1, 2005, service techs shall possess or work under someone who has a current certification
indicating he or she has passed the?
ICC UST Service Technician Exam
ICC cert must be renewed every?
24 months
Service techs must possess or be employed by a person who has the appropriate contractor's license
unless?
The individual has a tank testing license
Service tech is defined by any individual who?
Tests UST monitoring equipment, trouble shoots UST systems, and/or installs UST monitoring
equipment.
If the manufacturer training no longer exist, the local agency may?
Approve comparable alternate training .
UST includes?
Tank and connected piping
What is considered a UST?
A petroleum underground storage tank.
What UST system meets the requirements for secondary containment?
Doubled wall tanks
According to title 23; the following piping components if installed after July 1, 1987 must have
secondary containment.
Pressured product piping
What is considered "pipe" on tanks installed after July 1, 2003?
Pressured product piping and below ground vapor recovery.
Under dispenser containment (UDC) was required for all existing UST systems by
December 31, 2003
What system is for exchanging gas vapors in a storage tank and product in a fuel delivery truck
Stage 1 vapor recovery
Which approved method for non-visual monitoring for existing UST systems.
Statistical Inventory Reconciliation (SIR)
,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 - 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
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 - Answer- 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 - Answer- 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 - Answer- 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% - Answer- c.) 90%
An automatic tank gauge is utilized for leak detection of the ______________.
a.) Tank
b.) Tank and Piping
c.) Piping
d.) Interstitial space - Answer- a.) Tank
CCR Title 23, Sec 2643(b)(1)
ATG must be capable for detecting a release of?
0.2 gallons per hour
What is no longer an approved method for non-visual monitoring on existing UST systems?
Manual inventory reconciliation.
Automatic line leak detectors installed on underground piping with secondary containment shall be
capable of detecting a leak of ?
3 gallons per hour at 10 psi
How often should ATG be programmed to test the tank?
At least monthly
According to PEI RP 300, a combustible gas can be used to?
Detect vapor leaks in a vapor recovery system.
According to PEI RP 300, a written scope of work for vapor recovery installation should include?
Construction plans
Positive shut off overfill protection device must stop the flow of fuel when the tank is no more then?
95% full
