N.M. Admin. Code § 20.5.108.812

Current through Register Vol. 35, No. 23, December 10, 2024

Section 20.5.108.812 - REQUIREMENTS FOR UST UNDERGROUND SUCTION PIPING INSTALLED PRIOR TO APRIL 4, 2008

A. Owners and operators of underground storage tank systems with piping installed prior to April 4, 2008 that conveys regulated substances under suction where the piping system does not meet the requirements in Subsection B of 20.5.108.812 NMAC shall use one of the following methods. These methods shall be designed to detect a release from any portion of underground piping.

(1) A line tightness test shall be conducted every three years and the tightness test shall be capable of detecting a one-tenth gallon per hour leak rate.

(2) Interstitial monitoring shall be used in accordance with all of the requirements in 20.5.108.808 NMAC and 20.5.108.813 NMAC.

(3) Statistical inventory reconciliation shall be used in accordance with 20.5.108.809 NMAC for monthly monitoring of underground suction piping in conjunction with line tightness testing in accordance with Paragraph (1) of Subsection A of this section.

(4) Vapor monitoring shall be used in accordance with 20.5.108.806 NMAC.

(5) Groundwater monitoring shall be used in accordance with 20.5.108.807 NMAC.

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 InstitutePublication RP100, "Recommended Practices for Installation of Underground Liquid Storage Systems"; or

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

D. Owners and operators shall maintain all records of release detection and testing in accordance with 20.5.108.15 NMAC and provide to the department reports for all release detector testing, line tightness testing, and sensor testing in accordance with 20.5.108.816 NMAC.

N.M. Admin. Code § 20.5.108.812

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