This indicates an alternative form of leak detection that is not
specifically defined in the UST or AST rules.

This is a precision or integrity test used to determine if a pipe
is leaking at a volume of at least 0.1 gallons per hour.

This indicates an alternative form of leak detection that is not
specifically defined in the in the UST or AST rules.

This is the date that the annual leak SIR report is due to MPCA.
The date is February 15th.

This is any other form of leak detection used for piping that is
not specifically mentioned in the UST or AST rules.

This is a precision or integrity test used to determine if a tank
is leaking.

This equipment is installed on pressurized piping lines. Line
leak detectors (LLDs) must be able to detect large leaks of three
(3) gallons per hour (gph). Mechanical line leak detectors are
installed at the submersible pump head and usually work by
restricting the flow of product. Electronic line leak detectors
can be installed either at the pump head or at the dispenser and
work by detecting pressure increases or decreases that may
indicate leaks. Some electronic units are capable of performing

Also called an ATG, this is a permanent system installed in a
tank with probes that can provide tank leak testing and inventory
information. Some systems may also provide information like
product temperature, water levels, and ullage (amount of head
space in the tank).

This method involves sampling monthly for vapors that have been
released from product contained in the piping. The detection and
measurement of fumes using this method indicate a possible leak.
Also, there are a number of criteria that must be met to use this
as a leak detection option. If this method is used, it is
normally utilized for both the tank and the piping.

This is a method of leak detection than can only be used for
underground tanks that are 2,000 gallons or smaller. This method
requires monitoring on a weekly basis.