Current through Register Vol. 35, No. 6, March 26, 2024
A.
Owners and operators of above ground storage tank systems where piping conveys
regulated substances under suction and was installed after the effective date
of these regulations shall meet the requirements for interstitial monitoring in
20.5.111.1103 NMAC and the following:
(1)
Sensors shall be installed in all containment sumps associated with the piping,
including under-dispenser containment, transition sumps, and secondary
containment sumps used to monitor the interstice.
(2) Sensors shall:
(a) monitor the interstice;
(b) monitor all containment sumps associated
with the piping;
(c) sound an alarm
and automatically shut off the pump when a regulated substance or water is
detected;
(d) be positioned in the
lowest point of the containment sump; and
(e) be tested annually in accordance with
Subsection C of 20.5.111.1104 NMAC.
(3) Containment sumps used for interstitial
monitoring shall be tested every three years beginning three years after the
effective date of the regulations. The testing of the containment sumps shall
comply with one of the following:
(a) the
testing procedures as described in Petroleum Equipment Institute
Publication RP 1200, "Recommended Practices for the Testing and Verification of
Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST
Facilities"; or
(b) the
equipment manufacturer's published testing procedures.
B. Release detection is not
required for suction piping that is designed and constructed to meet all of the
following standards:
(1) the below-grade
piping operates at less than atmospheric pressure;
(2) the below-grade piping is sloped so that
the contents of the pipe will drain back into the storage tank if the suction
is released;
(3) only one check
valve is included in each suction line;
(4) the check valve is located directly below
and as close as practical to the suction pump; and
(5) compliance with Paragraphs (2) through
(4) of Subsection B of this section is demonstrated.
C. Owners and operators shall use one or more
of the following to comply with the requirements of this section:
(1)
Petroleum Equipment Institute
Publication RP 100, "Recommended Practices for Installation of Underground
Liquid Storage Systems";
(2)
Petroleum Equipment Institute RP
200, "Recommended Practices for Installation of Aboveground Storage Systems for
Motor Vehicle Fueling";
(3)
American Petroleum Institute
Publication RP 1615, "Installation of Underground Hazardous Substances or
Petroleum Storage Systems";
(4)
American Petroleum Institute 570,
"Piping Inspection Code: In-Service Inspection, Repair, and Alteration of
Piping Systems"; and
(5)
American Society of Mechanical Engineering Standard B31.3, "Process
Piping".
D.
Owners and operators shall maintain all records of release detection and
testing in accordance with 20.5.11.1111 NMAC and provide to the department
reports for all release detector testing, line tightness testing, and sensor
testing in accordance with 20.5.11.1112 NMAC.
