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Study Guide California Designated Operator
( 16). Exam Questions With Verified Answers
The following are not "underground storage tanks" - answer✔1. A farm Tank
2. A heating oil tank
3. A hydraulic lift tank
4. A liquefied petroleum gas tank
5. A septic tank
6. A sump, pit, pond or lagoon
7. A wastewater treatment tanks except if it is part of a UST system
8. A pipeline located in a refinery except if it is connected to an underground storage tank
9. A storm water or waste water collection system
10. Tanks containing radioactive materials that are covered by the Atomic Energy Act
11. An emergency containment tank that is normally empty
12. Drums located in a basement and which contain 55 gallons or less of a hazardous material
13. Underground storage tanks containing hazardous waste that are regulated by the DTSC
, ©BRAINBARTER 2024/2025
14. A tank and associated piping located in a vault or basement and which meets the
requirements of section 25283.5 of the Health and Safety code
Title
An "existing underground storage tank" means - answer✔any underground storage tank installed
prior to January 1, 1984.
Tank "ullage" is - answer✔space between the product level and the top of the tank (i.e., it is the
empty space within the tank)
All new underground storage tanks including associated piping shall have - answer✔primary and
secondary containment
The design and construction of the primary containment on all new tanks, including any integral
secondary containment system, shall be approved by - answer✔an independent testing
organization in accordance with industry codes, voluntary consensus standards, or engineering
standards
The primary containment stem on all new tanks with or without an integral secondary
containment system shall - answer✔wear plates (striker plates) installed below all accessible
openings.
A secondary containment system for a new tank which is not an integral part of the of the
primary containment shall be - answer✔designed and constructed according to an engineering
specification approved by a state registered professional engineer or according to a nationally
recognized industry code or engineering standard.
, ©BRAINBARTER 2024/2025
The following requirements apply to non-integral secondary containment on new tanks -
answer✔1. Must contain 100% of the usable capacity of the primary containment for a single
container
2. Must contain 150% of the largest container or 10% of the aggregate volume for multiple
containers
3. If open to rainfall, must accommodate the amount of rain that could enter the system during a
24hour, 25-year storm in addition to the applicable volume in items 1 or 2 above.
4. If backfill material is placed in the secondary containment system, the system must meet
specific standards [see 2631 (d) (3)]
5. Must be equipped with a collection system to accumulate, store and permit removal of any
liquid within the system.
6. The floor of the system must be sloped to a collection sump and meet other design standards
[see 2631 (d) (5)].
7. If a membrane liner is used (e.g., excavation liner), the design shall meet specific design
standards [seee 2631 (d) (6)]
New underground storage tanks with secondary containment shall be - answer✔designed and
installed so that any loss of hazardous substance from the primary containment will be detected
by an interstitial monitoring device or method.
Owners or operators of new underground storage tanks shall implement a monitoring program
that: - answer✔1. Is approved by the local agency and specified in the operating permit.
Study Guide California Designated Operator
( 16). Exam Questions With Verified Answers
The following are not "underground storage tanks" - answer✔1. A farm Tank
2. A heating oil tank
3. A hydraulic lift tank
4. A liquefied petroleum gas tank
5. A septic tank
6. A sump, pit, pond or lagoon
7. A wastewater treatment tanks except if it is part of a UST system
8. A pipeline located in a refinery except if it is connected to an underground storage tank
9. A storm water or waste water collection system
10. Tanks containing radioactive materials that are covered by the Atomic Energy Act
11. An emergency containment tank that is normally empty
12. Drums located in a basement and which contain 55 gallons or less of a hazardous material
13. Underground storage tanks containing hazardous waste that are regulated by the DTSC
, ©BRAINBARTER 2024/2025
14. A tank and associated piping located in a vault or basement and which meets the
requirements of section 25283.5 of the Health and Safety code
Title
An "existing underground storage tank" means - answer✔any underground storage tank installed
prior to January 1, 1984.
Tank "ullage" is - answer✔space between the product level and the top of the tank (i.e., it is the
empty space within the tank)
All new underground storage tanks including associated piping shall have - answer✔primary and
secondary containment
The design and construction of the primary containment on all new tanks, including any integral
secondary containment system, shall be approved by - answer✔an independent testing
organization in accordance with industry codes, voluntary consensus standards, or engineering
standards
The primary containment stem on all new tanks with or without an integral secondary
containment system shall - answer✔wear plates (striker plates) installed below all accessible
openings.
A secondary containment system for a new tank which is not an integral part of the of the
primary containment shall be - answer✔designed and constructed according to an engineering
specification approved by a state registered professional engineer or according to a nationally
recognized industry code or engineering standard.
, ©BRAINBARTER 2024/2025
The following requirements apply to non-integral secondary containment on new tanks -
answer✔1. Must contain 100% of the usable capacity of the primary containment for a single
container
2. Must contain 150% of the largest container or 10% of the aggregate volume for multiple
containers
3. If open to rainfall, must accommodate the amount of rain that could enter the system during a
24hour, 25-year storm in addition to the applicable volume in items 1 or 2 above.
4. If backfill material is placed in the secondary containment system, the system must meet
specific standards [see 2631 (d) (3)]
5. Must be equipped with a collection system to accumulate, store and permit removal of any
liquid within the system.
6. The floor of the system must be sloped to a collection sump and meet other design standards
[see 2631 (d) (5)].
7. If a membrane liner is used (e.g., excavation liner), the design shall meet specific design
standards [seee 2631 (d) (6)]
New underground storage tanks with secondary containment shall be - answer✔designed and
installed so that any loss of hazardous substance from the primary containment will be detected
by an interstitial monitoring device or method.
Owners or operators of new underground storage tanks shall implement a monitoring program
that: - answer✔1. Is approved by the local agency and specified in the operating permit.
