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 20.5.114.1408 - METHODS OF RELEASE DETECTION FOR PIPING

Current through Register Vol. 35, No. 13, July 16, 2024
A. Owners and operators of underground piping
				associated with USTs with field-constructed tanks less than or equal to 50,000
				gallons shall meet the release detection requirements in 20.5.108
				NMAC.
B. Owners and operators of
				underground piping associated with airport hydrant systems and USTs with
				field-constructed tanks greater than 50,000 gallons shall follow 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) Perform a semiannual or annual line
				tightness test at or above the piping operating pressure in accordance with the
				table below.
Maximum Leak Detection Rate Per Test Section
								Volume
Test Section Volume (Gallons)
Semiannual Test - Leak Detection Rate Not to
								Exceed (Gallons Per Hour)
Annual Test - Leak Detection Rate Not to
								Exceed (Gallons Per Hour)
< 50,000
1.0
0.5
>= 50,000 to < 75,000
1.5
0.75
>= 75,000 to < 100,000
2.0
1.0
>= 100,000
3.0
1.5
(2)
				Piping segment volumes greater than or equal to 100,000 gallons not capable of
				meeting the maximum 3.0 gallon per hour leak rate for the semiannual test shall
				test according to the following schedule:
(a)
				First test shall be conducted no later than three years after the effective
				date of these regulations and the leak rate the test shall be no greater than
				six gallons per hour.
(b) Second
				test shall be conducted no later than six years after the effective date of
				these regulations and the leak rate for the test shall be no greater than six
				gallons per hour.
(c) Third test
				shall be conducted no later than seven years after the effective date of these
				regulations and the leak rate for the test shall be three gallons per
				hour.
(d) Subsequent tests
				conducted after seven years from the effective date of these regulations shall
				be semiannual or annual and conducted in accordance with Subparagraph (1) of
				this section.
(3) 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;
(4) 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 line tightness test (conducted
				in accordance with Paragraph (1) of this section using the leak rates for the
				semiannual test) 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;
				or
(5) Another method
				approved by the implementing agency if the owner and operator can demonstrate
				that the method can detect a release as effectively as any of the methods
				allowed in Paragraphs (1) through (4) of this section. In comparing methods,
				the implementing agency shall consider the size of release that the method can
				detect as well as the frequency and reliability of detection.