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California Designated Operator (PART 1 ) Exam
2026/2027 Actual Complete Real Verified Exam
Questions & Correct Well Elaborated Answers |100%
Verified solutions | Already Verified Test | Graded
A+||Newest Exam!!!
Which of the following UST Systems meet the requirement
for secondary containment:
a. Laminated Tanks
b. Clad Tanks
c. Coated Tanks
d. Double-Walled Tanks - Answer-d. Double-Walled Tanks
Secondary Containment Requirements for New UST
Systems; 23, 2361
The following is true of spill buckets except:
a. Must provide drainage for spilled product into
secondary containment sump
b. Must be tested annually
c. Designed to catch product spilled during disconnection
of delivery hose
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d. For temporary storage only - Answer-a. Must provide
drainage for spilled product into
secondary containment sump
" Spill bucket shall have drain valve which allows drainage
of the collected spill into the primary container or provide
other means to keep container empty." ; 23, 2635 (b)(1),
(c)
The following are approved overfill protection systems
except:
a. Automatic shutoff devices
b. Overfill alarms
c. Spill buckets
d. Ball float valves - Answer-c. Spill buckets
Spill buckets are not approved overfill protection devices;
23, 2635 (b)(2) and OM p.26-30
lf equipped with an overfill alarm, it must be located:
a. so that it can be seen and/or heard from the delivery
location
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b. within I 00 feet of the delivery location
c. within 50 feet of the delivery location
d. Both a. and c. - Answer-a. so that it can be seen and/or
heard from the delivery location
OM p.29
By definition an "Underground Storage Tank" includes:
a. Only the tank
b. The tank and all connected piping
c. The tank, all connected piping and dispensers
d. Only tanks totally beneath the surface of the ground -
Answer-b. The tank and all connected piping
"...any one or combination of tanks including all piping
connected thereto..." ; HS 25281
Which of the following is considered an Underground
Storage Tank:
a. Septic Tank
b. 500 Gallon Farm Tank
c. 2000 Gallon Petroleum Storage Tank
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d. 500 Gallon Residential Heating Oil Tank - Answer-c.
2000 Gallon Petroleum Storage Tank
UST Exempt Structures; HS 25281 and 23, 2621
The UST Owner or Operator must demonstrate Financial
Responsibility for:
a. Tanks holding Heating Oil used on the premises of a
residence
b. Residential Tanks > I, I 00 gallons
c. Septic Tanks
d. Tanks < 110 gallons holding a minimum concentration
of petroleum - Answer-b. Residential Tanks > I, I 00
gallons
Financial Responsibility Requirements; DS p.3
Underground Storage Tanks (USTs) - Answer-500 gallon
waste oil
Petroleum Storage Tank
California Designated Operator (PART 1 ) Exam
2026/2027 Actual Complete Real Verified Exam
Questions & Correct Well Elaborated Answers |100%
Verified solutions | Already Verified Test | Graded
A+||Newest Exam!!!
Which of the following UST Systems meet the requirement
for secondary containment:
a. Laminated Tanks
b. Clad Tanks
c. Coated Tanks
d. Double-Walled Tanks - Answer-d. Double-Walled Tanks
Secondary Containment Requirements for New UST
Systems; 23, 2361
The following is true of spill buckets except:
a. Must provide drainage for spilled product into
secondary containment sump
b. Must be tested annually
c. Designed to catch product spilled during disconnection
of delivery hose
,2|Page
d. For temporary storage only - Answer-a. Must provide
drainage for spilled product into
secondary containment sump
" Spill bucket shall have drain valve which allows drainage
of the collected spill into the primary container or provide
other means to keep container empty." ; 23, 2635 (b)(1),
(c)
The following are approved overfill protection systems
except:
a. Automatic shutoff devices
b. Overfill alarms
c. Spill buckets
d. Ball float valves - Answer-c. Spill buckets
Spill buckets are not approved overfill protection devices;
23, 2635 (b)(2) and OM p.26-30
lf equipped with an overfill alarm, it must be located:
a. so that it can be seen and/or heard from the delivery
location
,3|Page
b. within I 00 feet of the delivery location
c. within 50 feet of the delivery location
d. Both a. and c. - Answer-a. so that it can be seen and/or
heard from the delivery location
OM p.29
By definition an "Underground Storage Tank" includes:
a. Only the tank
b. The tank and all connected piping
c. The tank, all connected piping and dispensers
d. Only tanks totally beneath the surface of the ground -
Answer-b. The tank and all connected piping
"...any one or combination of tanks including all piping
connected thereto..." ; HS 25281
Which of the following is considered an Underground
Storage Tank:
a. Septic Tank
b. 500 Gallon Farm Tank
c. 2000 Gallon Petroleum Storage Tank
, 4|Page
d. 500 Gallon Residential Heating Oil Tank - Answer-c.
2000 Gallon Petroleum Storage Tank
UST Exempt Structures; HS 25281 and 23, 2621
The UST Owner or Operator must demonstrate Financial
Responsibility for:
a. Tanks holding Heating Oil used on the premises of a
residence
b. Residential Tanks > I, I 00 gallons
c. Septic Tanks
d. Tanks < 110 gallons holding a minimum concentration
of petroleum - Answer-b. Residential Tanks > I, I 00
gallons
Financial Responsibility Requirements; DS p.3
Underground Storage Tanks (USTs) - Answer-500 gallon
waste oil
Petroleum Storage Tank
