Underground Storage Tanks
A Class A operator shall maintain the records of UST Site Inspections for a minimum
of? - ANS - 3 Years
A leak should be suspected in a 1560-gallon tank if the variation between the beginning
and ending manual tank gauging liquid level measurements exceeds the weekly
standard of X gallons. X Is - ANS - 26 gallons
A Manual tank Guage Stick must be marked to the nearest - ANS - 1/8 Inch
A suspected release must be confirmed to the DEQ/LARA within: - ANS - 7 Days
After a UST is closed, how long must records be kept for? - ANS - at least 3 years.
An Automatic Tank Guage must be able to detect a leak of X Gallons per hour. X is? -
ANS - 0.2 Gallons per hour
API - ANS - American Petroleum Institute
ATG systems are equipt with what kind of alarms? - ANS - high and low product level,
high water level and theft
Automatic Line Leak detector may be used only if the method detects X Gallons per
hour at 10 lbs per square inch line pressure with in one hour. X is: - ANS - 3 Gallons
per hour
Automatic line leak detectors must be able to detect a leak X gallons per hour at a line
pressure of 10 psi within one hour. X is? - ANS - 3 gallons per hour
Automatic Tank Gauging System (ATG) - ANS - method that uses automated
processes to monitor product level and inventory level.
Ball Float valve - ANS - located at the bottom of the vent line, several inches below
the top of the UST...ball will rise with product level during delivery to restrict vapor
flowing out the vent line BEFORE the tank is full.
, Can a owner use pollution liability insurance as a means of financial responsibility? -
ANS - Yes
Check if the following statement is true or false: " A third part evaluation of a statistical
inventory reconciliation is good for any type of tank and product." - ANS - False
Class A and Class B Certification must be renewed every? - ANS - 5 Years
Class B operator shall not be responsible for more of the following facilities? - ANS -
45 facilities
continuous alarm system - ANS - constantly monitors line conditions and immediately
triggers an audible or visual alarm if a leak is suspected.
Even using the SIR system, you still have to do what everyday - ANS - product is
measured with gauge stick or other level monitor, and then reported when required.
Federal Regulation governing UST - ANS - 40 CFR 280
flow restrictor - ANS - if a leak is suspected it keeps the product flow rate well below
the usual flow rate.
Flow restrictors/flow shutoffs - ANS - monitor the pressure within the lines in different
ways. (Pressure up, down, how long it takes, etc.)
flow shutoff valve - ANS - if a leak is suspected it will completly cut off the flow and
shuts down the pump
For the SIR to be equivalent to the tank tightness testing, it must be able to detect to
what? - ANS - 0.1 gallons per hour.
How does the leak detection work with secondary containment method? - ANS - The
barrier holds the leak between the tank and the barrier so that the leak is detected. The
barrier is shaped so that a leak will be directed towards the interstitial monitor.
how long can a UST be temporarly closed for? - ANS - up to 12 months, then it must
be permanently closed
A Class A operator shall maintain the records of UST Site Inspections for a minimum
of? - ANS - 3 Years
A leak should be suspected in a 1560-gallon tank if the variation between the beginning
and ending manual tank gauging liquid level measurements exceeds the weekly
standard of X gallons. X Is - ANS - 26 gallons
A Manual tank Guage Stick must be marked to the nearest - ANS - 1/8 Inch
A suspected release must be confirmed to the DEQ/LARA within: - ANS - 7 Days
After a UST is closed, how long must records be kept for? - ANS - at least 3 years.
An Automatic Tank Guage must be able to detect a leak of X Gallons per hour. X is? -
ANS - 0.2 Gallons per hour
API - ANS - American Petroleum Institute
ATG systems are equipt with what kind of alarms? - ANS - high and low product level,
high water level and theft
Automatic Line Leak detector may be used only if the method detects X Gallons per
hour at 10 lbs per square inch line pressure with in one hour. X is: - ANS - 3 Gallons
per hour
Automatic line leak detectors must be able to detect a leak X gallons per hour at a line
pressure of 10 psi within one hour. X is? - ANS - 3 gallons per hour
Automatic Tank Gauging System (ATG) - ANS - method that uses automated
processes to monitor product level and inventory level.
Ball Float valve - ANS - located at the bottom of the vent line, several inches below
the top of the UST...ball will rise with product level during delivery to restrict vapor
flowing out the vent line BEFORE the tank is full.
, Can a owner use pollution liability insurance as a means of financial responsibility? -
ANS - Yes
Check if the following statement is true or false: " A third part evaluation of a statistical
inventory reconciliation is good for any type of tank and product." - ANS - False
Class A and Class B Certification must be renewed every? - ANS - 5 Years
Class B operator shall not be responsible for more of the following facilities? - ANS -
45 facilities
continuous alarm system - ANS - constantly monitors line conditions and immediately
triggers an audible or visual alarm if a leak is suspected.
Even using the SIR system, you still have to do what everyday - ANS - product is
measured with gauge stick or other level monitor, and then reported when required.
Federal Regulation governing UST - ANS - 40 CFR 280
flow restrictor - ANS - if a leak is suspected it keeps the product flow rate well below
the usual flow rate.
Flow restrictors/flow shutoffs - ANS - monitor the pressure within the lines in different
ways. (Pressure up, down, how long it takes, etc.)
flow shutoff valve - ANS - if a leak is suspected it will completly cut off the flow and
shuts down the pump
For the SIR to be equivalent to the tank tightness testing, it must be able to detect to
what? - ANS - 0.1 gallons per hour.
How does the leak detection work with secondary containment method? - ANS - The
barrier holds the leak between the tank and the barrier so that the leak is detected. The
barrier is shaped so that a leak will be directed towards the interstitial monitor.
how long can a UST be temporarly closed for? - ANS - up to 12 months, then it must
be permanently closed
