N.M. Admin. Code § 20.5.108.811 - REQUIREMENTS FOR UST UNDERGROUND PRESSURIZED PIPING INSTALLED ON OR AFTER APRIL 4, 2008

Owners and operators of underground storage tank systems with piping installed on or after April 4, 2008 shall use interstitial monitoring as release detection for underground pressurized piping that routinely contains regulated substances by following the current edition of an industry standard or code of practice developed by a nationally recognized association or independent testing laboratory approved in advance by the department.

A. Owners and operators of UST systems shall:

(1) use automatic line leak detectors (including mechanical or electronic detectors) that alert the operator to the presence of a leak by restricting or shutting off the flow of regulated substances through piping when a leak is detected at three gallons per hour at 10 pounds per square inch line pressure within one hour; and

(2) perform an annual test of the operation of the leak detector which includes a simulated leak, is conducted in accordance with the manufacturer's testing protocol, and confirms the automatic line leak detector detects a leak at three gallons per hour at 10 pounds per square inch line pressure within one hour.

B. Owners and operators shall use interstitial monitoring that complies with all of the requirements 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 submersible turbine pump 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 submersible turbine 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 starting 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.

C. Automatic line leak detectors and sensors required in this section that either fail a test or are found to be damaged shall be repaired or replaced and tested in accordance with 20.5.108.800 NMAC and Paragraph (1) of Subsection A of 20.5.108.811 NMAC. A line tightness test shall be conducted in accordance with Subparagraph (a) of Paragraph (3) of Subsection A of 20.5.108.810 NMAC after an automatic line leak detector has been repaired or replaced.

D. Equipment and methods used to monitor the piping shall be appropriate for the type and length of piping.

E. Owners and operators shall use one or more of the following to comply with the requirements of this section:

(1) Petroleum Equipment Institute Publication RP100, "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".

F. 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 release detector testing, line tightness testing, containment sump testing, and sensor testing in accordance with 20.5.108.816 NMAC.

Notes

N.M. Admin. Code § 20.5.108.811

Adopted by New Mexico Register, Volume XXIX, Issue 14, July 24, 2018, eff. 7/24/2018