N.M. Admin. Code § 20.5.108.801

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

Section 20.5.108.801 - REQUIREMENTS FOR HAZARDOUS SUBSTANCE UST SYSTEMS

A. Owners and operators of hazardous substance UST systems installed before April 4, 2008 shall provide containment that meets the requirements in Subsection C of 20.5.108.801 NMAC, and these UST systems shall be monitored every 30 days using one or more of the UST methods allowed in 20.5.108 NMAC. Owners and operators may request to use an alternate method in accordance with the requirements of 20.5.108.814 NMAC and shall provide the department with information in writing on effective corrective action technologies, health risks, and chemical and physical properties of the stored substance along with the characteristics of the UST site.

B. Owners and operators of hazardous substance UST systems installed on or after April 4, 2008 shall provide containment that meets the requirements in Subsection C of 20.5.108.801 NMAC, and shall monitor these UST systems at least every 30 days using interstitial monitoring in accordance with 20.5.108.808 NMAC and either 20.5.108.811 NMAC or 20.5.108.813 NMAC.

C. Release detection of hazardous substance UST systems shall meet the following requirements.

(1) Owners and operators shall design, construct and install secondary containment systems to:

(a) contain regulated substances that escape the primary containment until they are detected and removed;

(b) prevent the release of regulated substances to the environment at any time during the operational life of the UST system; and

(c) be checked for evidence of a release monthly; the provisions of 40 CFR 265.193, containment and detection of releases, may be used to comply with these requirements for storage tank systems installed on or before the effective date of these regulations.

(2) Double-walled tanks shall be designed, constructed, and installed to:

(a) contain a release from any portion of the inner tank within the outer wall; and

(b) detect the failure of the inner wall.

(3) External liners (including vaults) shall be designed, constructed and installed to:

(a) contain one hundred percent of the capacity of the largest tank within its boundary;

(b) prevent the interference of precipitation or groundwater intrusion with the ability to contain or detect a release of regulated substances; and

(c) surround the tank completely, thereby preventing lateral as well as vertical migration of regulated substances.

(4) Underground piping shall be equipped with secondary containment that satisfies the requirements of this section (for example: trench liners or double-walled pipe). In addition, underground piping that conveys regulated substances under pressure shall be equipped with an automatic line leak detector in accordance with Subsection A of 20.5.108.810 NMAC.

N.M. Admin. Code § 20.5.108.801

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