N.M. Admin. Code § 20.5.111.1102

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

Section 20.5.111.1102 - VISUAL INSPECTION REQUIREMENTS FOR ASTS

A. Owners and operators of ASTs may use visual inspection as a method of release detection if:

(1) all portions of the ASTs, including the AST bottoms, are completely visible, readily accessible and are inspected monthly;

(2) owners and operators maintain a written log of the visual inspections for each AST conducted monthly to include the following:

(a) the date and time the inspection was conducted;

(b) name and signature of the person who conducted the inspection;

(c) comments on the condition of each AST;

(d) the results of each inspection; and

(e) the volume of water found in the AST and if the water has been removed from the tank; and

(3) owners and operators keep visual inspection logs available at the facility.

B. Owners and operators of double-walled and double-bottomed AST systems shall include inspection of the interstice in the monthly visual inspection which shall be recorded in the log required in Paragraph (2) of Subsection A. Owners and operators of AST systems that use interstitial monitoring with an electronic liquid sensor as their monthly method of release detection in accordance with 20.5.111.1103 NMAC do not have to meet the requirements of this subsection. The monthly inspection of the interstice shall use one of the following methods:

(1) manually stick or gauge the monitoring ports of the tank by use of a tank gauging stick that is calibrated to the nearest one-eighth of an inch;

(2) where the interstice is equipped with a mechanical float device that will visually signal when a liquid is present in the interstice, inspect the device;

(3) for double-bottomed vertical ASTs with drain valves for the interstice, check for the accumulation of regulated substances or water;

(4) inspect the interstice per manufacturer's instructions; or

(5) visually inspect vertical ASTs inside secondary containment that meet the requirements of 20.5.109 NMAC where the secondary containment has been constructed so the space between the tank bottom and the concrete floor can be monitored or visually inspected.

N.M. Admin. Code § 20.5.111.1102

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