U1: UST Installation and Retrofitting
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Includes Frequently Tested Questions With
Elaborated 100% Correct Complete Solutions
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1. Which of the following is true regarding manual tank gauging (MTG)?
a. The UST must be taken out of service for at least 36 or 60 consecutive hours to conduct MTG.
b. MTG can be used on tanks with secondary containment.
c. If the test period for a 1000-gallon UST is 36 hours an annual tank integrity test is also
required.
d. MTG can be used on a 2000 gallon-UST after December 22, 1998. - CORRECT ANSWER c. If
the test period for a 1000-gallon UST is 36 hours, an annual tank integrity test is also required.
2. All of the following is correct for vadose zone monitoring, EXCEPT
a. Vadose zone monitoring cannot be used as the sole monitoring method if the ground water is
less than 10 feet below the tank.
b. Vadose zone monitoring shall be conducted continuously. Other vadose zone monitoring shall
be conducted weekly.
c. The monitoring points should be located outside of the backfill, if possible.
d. Background contamination shall not interfere with the method used to detect releases. -
CORRECT ANSWER c. The monitoring points should be located outside of the backfill, if possible.
3. All of the following is required on a hard copy of a monthly ATG monitoring test for a single-
wall UST, EXCEPT?
,a. Water & fuel depth
b. Date & time
c. Temperature & pressure
d. Duration of test - CORRECT ANSWER c. Temperature & pressure
4. Select the most accurate monitoring alternative for single wall pressurized piping after
December 22, 1998?
a. 3.0 gph hourly and 0.1 annual integrity test at any pressure.
b. 3.0 gph hourly and 0.2 monthly at 150% operating pressure.
c. 3.0 gph hourly with shut down and fail safe and a 0.2 monthly or 0.1 annual test.
d. Continuous statistical leak detection - CORRECT ANSWER c. 3.0 gph hourly with shut down
and fail safe and a 0.2 monthly or 0.1 annual test.
5. All of the following are required for monitoring single wall suction piping, EXCEPT?
a. Daily monitoring per 23 CCR, Chapter 16, Appendix II
b. Written records of the daily inspection must be maintained at the facility site.
c. Must be tested at least every three years.
d. A line leak detector capable of a 3.0-gph test must be installed. - CORRECT ANSWER d. A line
leak detector capable of a 3.0-gph test must be installed.
6. All of the following is correct regarding when under-dispenser containment was required,
EXCEPT?
a. At the time of installation for systems installed after January 1, 2000.
b. By July 1, 2001, for systems installed after July 1, 1987 that are located within 1,000 feet of a
public drinking water well.
,c. By December 31, 2003, for systems installed on or prior to January 1, 2000 that are not
located with 1000 feet of a public drinking water well.
d. By January 1, 2005 for facilities that conduct annual ELD. - CORRECT ANSWER d. By January 1,
2005 for facilities that conduct annual ELD.
7. All of the following are correct regarding when secondary containment must be tested,
EXCEPT?
a. Secondary containment systems must be tested every 36 months.
b. Secondary containment systems installed on or after January 1, 2001 shall be tested upon
installation, and 6 months after installation, and every 36 months thereafter.
c. Secondary containment systems installed prior to January 1, 2001 shall be tested by January
1, 2003 and every 36 months thereafter.
d. Secondary containment within 1000 feet of a drinking water well must be tested using ELD
every 36 months. - CORRECT ANSWER d. Secondary containment within 1000 feet of a drinking
water well must be tested using ELD every 36 months.
8. All of the following are listed in the hierarchy of secondary containment testing protocols,
EXCEPT?
a. Manufacturers guideline or standards
b. Applicable method specified in industry code or engineering standard
c. A test method approved by a registered professional engineer.
d. A protocol written by the local agency - CORRECT ANSWER d. A protocol written by the local
agency
9. Which UST system components listed below do not require secondary containment testing?
a. The tank outer wall/secondary containment
b. The outer piping or pipe secondary containment.
c. Sumps that are secondary containment for piping.
d. Spill containment buckets
, e. Under-dispenser containment that is secondary containment for piping - CORRECT ANSWER
d. Spill containment buckets
10. Field installed cathodic systems shall be designed and certified as adequate by
a. A state registered professional engineer
b. A trained and certified UST service technician
c. A corrosion specialist
d. A local agency inspector - CORRECT ANSWER c. A corrosion specialist
11. All of the following regarding spill buckets are correct, EXCEPT?
a. Spill containers must have a drain valve which allows drainage of the collected spill into the
primary container or provide a means to keep the spill container empty.
b. The exterior wall of spill containers shall be protected from galvanic corrosion, if it is made of
metal.
c. Spill containers shall have a minimum capacity of five gallons (19 liters).
d. Spill containers must be installed on all fill and phase I vapor recovery lines. - CORRECT
ANSWER d. Spill containers must be installed on all fill and phase I vapor recovery lines.
12. All of the following are approved overfill protection devices for an UST system with vent or
tank riser piping that has secondary containment, EXCEPT?
a. Alert the transfer operator when the tank is 90% full by restricting the flow into the tank or
triggering an audible and visual alarm.
b. Restrict delivery of flow to the tank at least 30 minutes before the tank overfills, provided the
restriction occurs when the tank is filled to no more than 95% of capacity; and activate an
audible alarm at least five minutes before the tank overfills.
c. Provide positive shut-off of flow to the tank so that none of the fittings located on the top of
the tank are exposed to product due to overfilling.
d. Alert the transfer operator when the tank is 98% full by activating an alarm. - CORRECT
ANSWER d. Alert the transfer operator when the tank is 98% full by activating an alarm.
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With
Elaborated 100% Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
1. Which of the following is true regarding manual tank gauging (MTG)?
a. The UST must be taken out of service for at least 36 or 60 consecutive hours to conduct MTG.
b. MTG can be used on tanks with secondary containment.
c. If the test period for a 1000-gallon UST is 36 hours an annual tank integrity test is also
required.
d. MTG can be used on a 2000 gallon-UST after December 22, 1998. - CORRECT ANSWER c. If
the test period for a 1000-gallon UST is 36 hours, an annual tank integrity test is also required.
2. All of the following is correct for vadose zone monitoring, EXCEPT
a. Vadose zone monitoring cannot be used as the sole monitoring method if the ground water is
less than 10 feet below the tank.
b. Vadose zone monitoring shall be conducted continuously. Other vadose zone monitoring shall
be conducted weekly.
c. The monitoring points should be located outside of the backfill, if possible.
d. Background contamination shall not interfere with the method used to detect releases. -
CORRECT ANSWER c. The monitoring points should be located outside of the backfill, if possible.
3. All of the following is required on a hard copy of a monthly ATG monitoring test for a single-
wall UST, EXCEPT?
,a. Water & fuel depth
b. Date & time
c. Temperature & pressure
d. Duration of test - CORRECT ANSWER c. Temperature & pressure
4. Select the most accurate monitoring alternative for single wall pressurized piping after
December 22, 1998?
a. 3.0 gph hourly and 0.1 annual integrity test at any pressure.
b. 3.0 gph hourly and 0.2 monthly at 150% operating pressure.
c. 3.0 gph hourly with shut down and fail safe and a 0.2 monthly or 0.1 annual test.
d. Continuous statistical leak detection - CORRECT ANSWER c. 3.0 gph hourly with shut down
and fail safe and a 0.2 monthly or 0.1 annual test.
5. All of the following are required for monitoring single wall suction piping, EXCEPT?
a. Daily monitoring per 23 CCR, Chapter 16, Appendix II
b. Written records of the daily inspection must be maintained at the facility site.
c. Must be tested at least every three years.
d. A line leak detector capable of a 3.0-gph test must be installed. - CORRECT ANSWER d. A line
leak detector capable of a 3.0-gph test must be installed.
6. All of the following is correct regarding when under-dispenser containment was required,
EXCEPT?
a. At the time of installation for systems installed after January 1, 2000.
b. By July 1, 2001, for systems installed after July 1, 1987 that are located within 1,000 feet of a
public drinking water well.
,c. By December 31, 2003, for systems installed on or prior to January 1, 2000 that are not
located with 1000 feet of a public drinking water well.
d. By January 1, 2005 for facilities that conduct annual ELD. - CORRECT ANSWER d. By January 1,
2005 for facilities that conduct annual ELD.
7. All of the following are correct regarding when secondary containment must be tested,
EXCEPT?
a. Secondary containment systems must be tested every 36 months.
b. Secondary containment systems installed on or after January 1, 2001 shall be tested upon
installation, and 6 months after installation, and every 36 months thereafter.
c. Secondary containment systems installed prior to January 1, 2001 shall be tested by January
1, 2003 and every 36 months thereafter.
d. Secondary containment within 1000 feet of a drinking water well must be tested using ELD
every 36 months. - CORRECT ANSWER d. Secondary containment within 1000 feet of a drinking
water well must be tested using ELD every 36 months.
8. All of the following are listed in the hierarchy of secondary containment testing protocols,
EXCEPT?
a. Manufacturers guideline or standards
b. Applicable method specified in industry code or engineering standard
c. A test method approved by a registered professional engineer.
d. A protocol written by the local agency - CORRECT ANSWER d. A protocol written by the local
agency
9. Which UST system components listed below do not require secondary containment testing?
a. The tank outer wall/secondary containment
b. The outer piping or pipe secondary containment.
c. Sumps that are secondary containment for piping.
d. Spill containment buckets
, e. Under-dispenser containment that is secondary containment for piping - CORRECT ANSWER
d. Spill containment buckets
10. Field installed cathodic systems shall be designed and certified as adequate by
a. A state registered professional engineer
b. A trained and certified UST service technician
c. A corrosion specialist
d. A local agency inspector - CORRECT ANSWER c. A corrosion specialist
11. All of the following regarding spill buckets are correct, EXCEPT?
a. Spill containers must have a drain valve which allows drainage of the collected spill into the
primary container or provide a means to keep the spill container empty.
b. The exterior wall of spill containers shall be protected from galvanic corrosion, if it is made of
metal.
c. Spill containers shall have a minimum capacity of five gallons (19 liters).
d. Spill containers must be installed on all fill and phase I vapor recovery lines. - CORRECT
ANSWER d. Spill containers must be installed on all fill and phase I vapor recovery lines.
12. All of the following are approved overfill protection devices for an UST system with vent or
tank riser piping that has secondary containment, EXCEPT?
a. Alert the transfer operator when the tank is 90% full by restricting the flow into the tank or
triggering an audible and visual alarm.
b. Restrict delivery of flow to the tank at least 30 minutes before the tank overfills, provided the
restriction occurs when the tank is filled to no more than 95% of capacity; and activate an
audible alarm at least five minutes before the tank overfills.
c. Provide positive shut-off of flow to the tank so that none of the fittings located on the top of
the tank are exposed to product due to overfilling.
d. Alert the transfer operator when the tank is 98% full by activating an alarm. - CORRECT
ANSWER d. Alert the transfer operator when the tank is 98% full by activating an alarm.
