New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTION
Chapter 5 - PETROLEUM STORAGE TANKS
Part 114 - AIRPORT HYDRANT FUEL DISTRIBUTION SYSTEMS, UST SYSTEMS WITH FIELD- CONSTRUCTED TANKS, AND HYBRID STORAGE TANK SYSTEMS
Section 20.5.114.1407 - METHODS OF RELEASE DETECTION FOR UST SYSTEMS WITH FIELD-CONSTRUCTED TANKS
Universal Citation: 20 NM Admin Code 20.5.114.1407
Current through Register Vol. 35, No. 6, March 26, 2024
A. Owners and operators of field-constructed tanks with a capacity less than or equal to 50,000 gallons shall meet the release detection requirements in 20.5.108 NMAC.
B. Owners and operators of field-constructed tanks with a capacity greater than 50,000 gallons shall meet either the requirements in 20.5.108 NMAC (except 20.5.108.806 NMAC and 20.5.108.807 NMAC shall be combined with inventory control as stated below) or use one or a combination of the following alternative methods of release detection:
(1) conduct an annual tank
tightness test that can detect a 0.5 gallon per hour leak rate;
(2) use an automatic tank gauging system that
can detect a leak rate less than or equal to one gallon per hour to perform
release detection at least every 30 days. This method shall be combined with a
tank tightness test that can detect a 0.2 gallon per hour leak rate that is
performed at least every three years;
(3) use an automatic tank gauging system that
can detect a leak rate less than or equal to two gallons per hour to perform
release detection at least every 30 days. This method shall be combined with a
tank tightness test that can detect a 0.2 gallon per hour leak rate that is
performed at least every two years;
(4) perform vapor monitoring (conducted in
accordance with 20.5.108.806 NMAC for a tracer compound placed in the storage
tank system) capable of detecting a 0.1 gallon per hour leak rate at least
every two years;
(5) perform
inventory control (conducted in accordance with department of defense
Directive 4140.25-M; ATA Airport Fuel Facility Operations and
Maintenance Guidance Manual; or equivalent procedures) at least every
30 days that can detect a leak equal to or less than 0.5 percent of
flow-through; and
(a) perform a tank tightness
test that can detect a 0.5 gallon per hour leak rate at least every two years;
or
(b) perform vapor monitoring or
groundwater monitoring (conducted in accordance with 20.5.108.806 NMAC and
20.5.108.807 NMAC, respectively, for the stored regulated substance) at least
every 30 days.
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