N.M. Admin. Code § 20.5.114.1401

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

Section 20.5.114.1401 - UPGRADE REQUIREMENTS FOR EXISTING AIRPORT HYDRANT FUEL DISTRIBUTION SYSTEMS, UST SYSTEMS WITH FIELD-CONSTRUCTED TANKS, AND HYBRID STORAGE TANK SYSTEMS

No later than three years after the effective date of the regulations, all airport hydrant fuel distribution systems, UST systems with field-constructed tanks, and hybrid storage tank systems installed prior to the effective date of these regulations shall comply with the following requirements:

A. Above ground storage tank systems. Tanks greater than 10 years old without cathodic protection must be assessed to ensure the tank is structurally sound and free of corrosion holes prior to adding cathodic protection. The assessment must be by internal inspection or another method determined by the department to adequately assess the tank for structural soundness and corrosion holes. AST systems or system components found to be structurally unsound or to have corrosion holes or damage shall be replaced in accordance with the requirements for a new AST system in 20.5.109 NMAC or permanently closed in accordance with 20.5.115 NMAC. AST systems shall be protected from corrosion in accordance with 20.5.109 NMAC and 20.5.110 NMAC and shall comply with spill and overfill prevention equipment requirements in accordance with 20.5.109 NMAC and 20.5.110 NMAC.

B. Underground storage tank systems. UST system components in contact with an electrolyte and that routinely contain regulated substances shall meet one of the following:

(1) be constructed of a non-corrodible material or steel clad with a non-corrodible material that meets the performance standards in 20.5.106.603 NMAC and 20.5.106.609 NMAC; or

(2) be constructed of metal and cathodically protected in accordance with the requirements in 20.5.106 NMAC, 20.5.107 NMAC, and in accordance with a code of practice developed by a nationally recognized association or independent testing laboratory and meet the following:

(a) Tanks greater than 10 years old without cathodic protection must be assessed to ensure the tank is structurally sound and free of corrosion holes prior to adding cathodic protection. The assessment must be by internal inspection or another method determined by the department to adequately assess the tank for structural soundness and corrosion holes.

(b) Existing steel tanks shall comply with the upgrade requirements in 20.5.106.607 NMAC.

C. Piping.

(1) Metal piping on an airport hydrant system or field-constructed UST system that is in contact with an electrolyte must be cathodically protected in accordance with requirements of 20.5.106 NMAC, 20.5.107 NMAC, and in accordance with a code of practice developed by a nationally recognized association or independent testing laboratory.

(2) Metal underground piping or piping in contact with an electrolyte on a hybrid storage tank system shall be either secondarily contained or replaced with double walled non-corrodible piping with containment sumps at both ends.

D. Spill and overfill prevention equipment. Owners and operators shall comply with the spill and overfill prevention requirements as follows:

(1) AST systems with capacities of less than 55,000 gallons and greater than 1320 gallons and associated with airport hydrant systems or USTs with field-constructed tanks shall meet the requirements for spill and overfill prevention equipment in 20.5.109.910 NMAC;

(2) UST systems associated with airport hydrant systems or USTs with field-constructed tanks shall meet the requirements for spill and overfill prevention equipment in 20.5.106.613 NMAC.

E. Hybrid storage tank systems.

(1) Any UST receiving deliveries of regulated substance by a remote fill pipe connected to an above ground storage tank shall be equipped with a containment sump at the connection to the UST.

(2) Any remote fill piping shall be constructed of double walled piping and be interstitially monitored in accordance with 20.5.108.811 NMAC or 20.5.108.813 NMAC as applicable.

(3) Remote fill piping shall be equipped with a transition sump where the piping enters the ground from the AST.

(4) Any UST receiving deliveries of regulated substance by a remote fill pipe connected to an AST shall be equipped with redundant overfill prevention and pressure regulating devices to include the following:

(a) an overfill prevention device that shall activate an audible and visual alarm at eighty-five percent of the UST capacity;

(b) an overfill prevention device that shall automatically restrict fuel delivery without increasing pressure on the UST at ninety percent of the UST capacity;

(c) an overfill prevention device that shall automatically shut off the delivery at ninety-five percent of the UST capacity;

(d) devices that monitor and limit both the flow and pressure placed on the UST and the piping from the AST to the UST during the delivery of regulated substance such that the delivery pipe pressure shall not exceed normal operating pressure in accordance with the manufacturer's specification; and

(e) a tank venting system, which must be adequately sized to ensure that atmospheric pressure is continuously maintained, including during filling and emptying of tank.

F. Secondary containment. Owners and operators shall comply with the secondary containment requirements as follows:

(1) Tanks and piping for UST systems with field-constructed tanks replaced after the effective date of these regulations shall be secondarily contained upon installation for tanks with capacities of 50,000 gallons or less that are not part of an airport hydrant system.

(2) Secondary containment shall not be required for piping on UST systems with field-constructed tanks that are replaced after the effective date of these regulations where the tank capacity is greater than 50,000 gallons.

(3) Hydrant pits installed on existing airport hydrant systems after the effective date of these regulations shall be secondarily contained.

G. Owners and operators shall use one of the following codes of practice to comply with corrosion protection requirements in this section:

(1)NACE International Standard Practice SP 0285, "External Corrosion Control of Underground Storage Tank Systems by Cathodic Protection";

(2)NACE International Standard Practice SP 0169, "Control of External Corrosion on Underground or Submerged Metallic Piping Systems";

(3)National Leak Prevention Association Standard 631, Chapter C, "Internal Inspection of Steel Tanks for Retrofit of Cathodic Protection"; or

(4)American Society for Testing and Materials Standard G158, "Standard Guide for Three Methods of Assessing Buried Steel Tanks".

H. In addition to the industry codes of practice and standards listed in 20.5.106 NMAC and 20.5.109 NMAC owners and operators may use Unified Facilities Criteria (UFC) 3-460-01, "Design: Petroleum Fuel Facilities" to comply with these requirements.

N.M. Admin. Code § 20.5.114.1401

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