N.M. Admin. Code § 20.5.106.613

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

Section 20.5.106.613 - SPILL AND OVERFILL PREVENTION

A. Except as provided in subsection B of this section, to prevent spilling and overfilling associated with transfers of regulated substances to underground storage tank systems, owners and operators shall use the following spill and overfill prevention equipment:

(1) spill prevention equipment that will prevent release of regulated substances to the environment when the transfer hose is detached from the fill pipe; and

(2) overfill prevention equipment for USTs that will:

(a) automatically shut off flow into the tank when the tank is no more than ninety-five percent full; or

(b) alert the transfer operator when the tank is no more than ninety percent full by restricting the flow into the tank or triggering a high-level audible alarm.

B. Owners and operators are not required to use the spill and overfill prevention equipment specified in Subsection A of this section if approved in writing in advance by the department where:

(1) alternative equipment is used that is determined by the department to be no less protective of public health, safety and welfare and the environment than the equipment specified in Paragraphs (1) and (2) of Subsection A of this section; or

(2) the underground storage tank system is filled by transfers of no more than 25 gallons at one time;

C. Flow restrictors or ball float valves used in vent lines shall not be used as overfill prevention equipment for USTs when overfill prevention is installed or replaced after effective date of these rules.

D. Spill and overfill prevention equipment must be periodically tested or inspected in accordance with 20.5.107.704 NMAC.

E. Owners and operators of UST systems with remote fill piping shall install a trap door or equivalent device and shall meet the following:

(1) Flow restrictors or ball float valves shall not be installed or used on a UST system with a remote fill pipe.

(2) Owners and operators who install or modify remote fill piping shall install a containment sump where remote fill piping connects to the UST.

F. Overfill prevention and spill prevention equipment for new UST systems shall be either listed in accordance with an industry standard or code of practice developed by a nationally recognized association or independent testing laboratory for use with flammable and combustible liquids.

G. Owners and operators shall not install oil/water separators to meet spill prevention requirements for UST systems.

N.M. Admin. Code § 20.5.106.613

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