UST - UNDERGROUND STORAGE TANK EXAM
2024-2025
Confined space is:
Not intended for ongoing employee occupation.
Limited entry and exit
Large enough for an employee to enter and do work.
Answer: (d) All of the aforementioned.
All of the following are not exempt from UST restrictions, except:
Heating Oil Tanks
Waste Oil Tanks
Motor car fuel tanks
Aviation fuel tanks - answer (a)
Title 23 CCR Section 2621(a)(2)
This is an accepted quantitative approach of non-visual monitoring for existing
UST systems:
Groundwater Monitoring
Vadose Zone Monitoring
Statistical Inventory Reconciliation
d) Interstitial Sensor - ANSWER (c) Statistical Inventory Reconciliation
CCR Title 23, Section 2643 (b)(3)
,To achieve "Fail Safe" criteria, the monitoring system must shut off the turbine
pump during the following scenarios:
Power Outage
Monitoring System Fails.
Monitoring System Disconnect
ANSWER: (d) All of the above.
CCR 23, section 2611
If a hazardous material is stored in a basement, which of the following factors will
exempt the container from UST regulations?
The container volume is larger than 1320 gallons.
The tank is emptied every 30 days.
The container is corrosion shielded.
The amount held is 55 gallons or less—ANSWER (d)
Section 2621 (a)(13)
Exemption: Drums installed in basements that contain 55 gallons or less of a
hazardous substance.
When an ATG is used for single-walled tank leak detection, it must generate a
post-test hard copy report containing the following information EXCEPT:
Liquid volume
Fuel depth
Outside air temperature
, Time and date of the test - ANSWER (c) Outside air temperature
CCR Title 23, Section 2643 (b)(1)
The following are "new underground storage tanks" except:
Ranks established prior to January 1, 1984
Tanks installed after January 1, 1987.
Farm tanks storing motor vehicle fuel for sale.
Tanks erected for emergency generators in hospitals - ANSWER
23 CCR 2611
What information must be on the external surface of a new UST beginning July 1,
1991?
Engineering standard, capacity, year manufactured, and location of manufacturer
Engineering standard, diameter, storage material, and year
Diameter, capacity, year of production, manufacturer
All of the aforementioned - answer (c)
Found in section 2631(b).
A monitoring program requires:
Be approved by a local agency.
As stipulated in the UST operating authorization.
Include the frequency of conducting the monitoring.
2024-2025
Confined space is:
Not intended for ongoing employee occupation.
Limited entry and exit
Large enough for an employee to enter and do work.
Answer: (d) All of the aforementioned.
All of the following are not exempt from UST restrictions, except:
Heating Oil Tanks
Waste Oil Tanks
Motor car fuel tanks
Aviation fuel tanks - answer (a)
Title 23 CCR Section 2621(a)(2)
This is an accepted quantitative approach of non-visual monitoring for existing
UST systems:
Groundwater Monitoring
Vadose Zone Monitoring
Statistical Inventory Reconciliation
d) Interstitial Sensor - ANSWER (c) Statistical Inventory Reconciliation
CCR Title 23, Section 2643 (b)(3)
,To achieve "Fail Safe" criteria, the monitoring system must shut off the turbine
pump during the following scenarios:
Power Outage
Monitoring System Fails.
Monitoring System Disconnect
ANSWER: (d) All of the above.
CCR 23, section 2611
If a hazardous material is stored in a basement, which of the following factors will
exempt the container from UST regulations?
The container volume is larger than 1320 gallons.
The tank is emptied every 30 days.
The container is corrosion shielded.
The amount held is 55 gallons or less—ANSWER (d)
Section 2621 (a)(13)
Exemption: Drums installed in basements that contain 55 gallons or less of a
hazardous substance.
When an ATG is used for single-walled tank leak detection, it must generate a
post-test hard copy report containing the following information EXCEPT:
Liquid volume
Fuel depth
Outside air temperature
, Time and date of the test - ANSWER (c) Outside air temperature
CCR Title 23, Section 2643 (b)(1)
The following are "new underground storage tanks" except:
Ranks established prior to January 1, 1984
Tanks installed after January 1, 1987.
Farm tanks storing motor vehicle fuel for sale.
Tanks erected for emergency generators in hospitals - ANSWER
23 CCR 2611
What information must be on the external surface of a new UST beginning July 1,
1991?
Engineering standard, capacity, year manufactured, and location of manufacturer
Engineering standard, diameter, storage material, and year
Diameter, capacity, year of production, manufacturer
All of the aforementioned - answer (c)
Found in section 2631(b).
A monitoring program requires:
Be approved by a local agency.
As stipulated in the UST operating authorization.
Include the frequency of conducting the monitoring.
