N.M. Admin. Code § 20.5.108.810

Current through Register Vol. 35, No. 21, November 5, 2024

Section 20.5.108.810 - REQUIREMENTS FOR UST UNDERGROUND PRESSURIZED PIPING INSTALLED PRIOR TO APRIL 4, 2008

Owners and operators of underground storage tank systems with piping installed prior to April 4, 2008, except those used for emergency power generation, shall provide 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;

(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; and

(3) use a method, or combination of methods, for monitoring the piping for releases that complies with one of the following:

(a) A precision line tightness test is conducted every 12 months that is capable of detecting a leak of 0.1 gallons per hour at one and one-half times the operating pressure.

(b) The method is capable of detecting a two-tenths gallon per hour leak and is used every 30 days.

(c) One of the methods in 20.5.108.805 NMAC through 20.5.108.809 NMAC is used, if it is capable of detecting a release from any portion of the underground piping that routinely contains a regulated substance.

(d) Interstitial monitoring is used in accordance with all of the requirements in 20.5.108.808 NMAC and 20.5.108.811 NMAC.

B. Owners and operators who use statistical inventory reconciliation for monthly monitoring of underground pressurized piping shall conduct annual line tightness testing in accordance with Subparagraph (a) of Paragraph (3) of Subsection A of 20.5.108.810 NMAC.

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 20.5.108.810 NMAC. A line tightness test shall be conducted in accordance with Subsection A of this section after an automatic line leak detector has been 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 InstitutePublication RP100, "Recommended Practices for Installation of Underground Liquid Storage Systems"; or

(2)American Petroleum InstitutePublication RP 1615, "Installation of Underground Petroleum Storage Systems".

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 leak detector testing, line tightness testing, and sensor testing in accordance with 20.5.108.816 NMAC.

N.M. Admin. Code § 20.5.108.810

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