Current through Register Vol. 35, No. 6, March 26, 2024
A.
Owners and operators of underground storage tank systems with piping installed
on or after April 4, 2008 where the piping conveys regulated substances under
suction shall meet the requirements for interstitial monitoring in 20.5.108.808
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 B of 20.5.108.805
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.
(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)
American Petroleum Institute
Publication RP 1615, "Installation of Underground Petroleum Storage
Systems"; or
(3)
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".
D.
Owners and operators shall maintain all records of release detection and
testing in accordance with 20.5.108.815 NMAC and provide to the department
reports for all containment sump testing, line tightness testing, and sensor
testing in accordance with 20.5.108.816 NMAC.
