Louisiana Administrative Code
Title 33 - ENVIRONMENTAL QUALITY
Part XI - Underground Storage Tanks
Chapter 8 - UST Systems with Field-Constructed Tanks and Airport Hydrant Fuel Distribution Systems
Section XI-803 - Additions, Exceptions, and Alternatives for UST Systems with Field-Constructed Tanks and Airport Hydrant Systems

Universal Citation: LA Admin Code XI-803

Current through Register Vol. 50, No. 9, September 20, 2024

A. Exceptions to Piping Secondary Containment Requirements. Owners and operators may use single walled piping when installing or replacing piping associated with UST systems with field-constructed tanks greater than 50,000 gallons and piping associated with airport hydrant systems. Piping associated with UST systems with field-constructed tanks less than or equal to 50,000 gallons not part of an airport hydrant system shall meet the secondary containment requirements when installed or replaced.

B. Upgrade Requirements. Not later than September 20, 2021, airport hydrant systems and UST systems with field-constructed tanks where installation commenced on or before September 20, 2018 shall meet the following requirements or be permanently closed in accordance with LAC 33:XI.Chapter 9.

1. Corrosion Protection

a. UST system components that routinely contain regulated substances and that are in contact with soil, backfill, or water shall meet one of the following:

i. except as provided in Paragraph A of this Section, the new UST system performance standards for tanks in LAC 33:XI.303.D.a and for piping in LAC 33:XI.303.D.2; or

ii. be constructed of metal and cathodically protected according to a code of practice developed by a nationally recognized organization or independent testing laboratory and meet the following;

(a). cathodic protection shall meet the requirements of LAC 33:XI.303.D.1.b.ii, iii, and iv for tanks and LAC 33:XI.303.D.2.b.ii, iii, and iv for piping; and

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

2. Spill and Overfill Prevention Equipment. To prevent spilling and overfilling associated with product transfers to the UST system, all UST systems with field-constructed tanks and airport hydrant systems shall comply with the new UST system spill and overfill prevention equipment requirements specified in LAC 33:XI.303.D.3.

C. Walkthrough Inspections

1. In addition to the walkthrough inspection requirements in LAC 33:XI.513, owners and operators shall inspect the following additional areas for airport hydrant systems at least once every 30 days if confined space entry according to the Occupational Safety and Health Administration (see 29 CFR 1910) is not required or at least once every 12 months if confined space entry is required and keep documentation of the inspection according to LAC 33:XI.513.B:

a. hydrant pitsvisually check for any damage, remove any liquid or debris, and check for any leaks;

b. hydrant piping vaultscheck for any piping leaks.

D. Release Detection

1. Owners and operators of UST systems with field-constructed tanks and airport hydrant systems shall begin meeting the release detection requirements described in this Chapter not later than September 20, 2021.

a. Methods of Release Detection for Field-Constructed Tanks

i. Owners and operators of field-constructed tanks with a capacity of less than or equal to 50,000 gallons shall meet the requirements in LAC 33:XI.701-705 (except 701.A.5.b and 701.A.5.c shall be combined with inventory control as stated below) or use one or a combination of the following alternative methods of release detection:

(a). conduct an annual tank tightness test that can detect a 0.5 gallon per hour leak rate;

(b). use an automatic tank gauging system to perform release detection at least once every 30 days that can detect a leak rate less than or equal to one gallon per hour. The method shall be combined with a tank tightness test that can detect a 0.2 gallon per hour leak rate performed at least once every three years;

(c). use an automatic tank gauging system to perform release detection at least once every 30 days that can detect a leak rate less than or equal to two gallons per hour. This method shall be combined with a tank tightness test that can detect a 0.2 gallon per hour leak rate performed at least once every two years;

(d). perform vapor monitoring conducted in accordance with LAC 33:XI.701.A.5.b for a tracer compound placed in the tank system capable of detecting a 0.1 gallon per hour leak rate at least once every two years;

(e). perform inventory control conducted in accordance with Department of Defense Directive 4140.25; ATA Airport Fuel Facility Operations and Maintenance Guidance Manual; or equivalent procedures at least once every 30 days that can detect a leak equal to or less than 0.5 percent of flow-through and:

(i). perform a tank tightness test that can detect a 0.5 gallon per hour leak rate at least once every two years; or

(ii). perform vapor monitoring or groundwater monitoring conducted in accordance with LAC 33:XI.701.A.5.b and c, respectively, for the stored regulated substance at least once every 30 days;

(f). another method approved by the department may be used if the owner and operator can demonstrate that the method can detect a release as effectively as any of the methods allowed in Subparagraphs D.1.a.i.(a).D.1.a.i.(e). of this Section. In comparing methods, the department shall consider the size of release that the method can detect and the frequency and reliability of detection.

b. Methods of Release Detection for Piping. Owners and operators of underground piping associated with field-constructed tanks less than or equal to 50,000 gallons shall meet the release detection requirements in LAC 33:XI.Chapter 7. Owners and operators of underground piping associated with airport hydrant systems and field-constructed tanks greater than 50,000 gallons shall follow either the requirements of LAC 33:XI.Chapter 7 (except LAC 33:XI.701.A.5.b and c shall be combined with inventory control as stated below) or use one or a combination of the following alternative methods of release detection:

i. perform semiannual (once every six months) or annual (once every 12 months) line tightness testing that meets the following requirements:

(a). line tightness test at or above the piping operating pressure in accordance with the following table;

Maximum Leak Detection Rate Per Test Section Volume
Test Section Volume (gallons)	Semiannual Test (leak detection rate not to exceed gallons per hour)	Annual Test (leak detection rate not to exceed gallons per hour)
<50,000	1.0	0.5
[GREATER THAN EQUALS TO]50,000 to <75,000	1.5	0.75
[GREATER THAN EQUALS TO]75,000 to <100,000	2.0	1.0
100,000	3.0	1.5

(b). piping segment volumes greater than 100,000 gallons not capable of meeting the maximum 3 gallons per hour leak rate for the semiannual test may be tested at a leak rate up to 6 gallons per hour according to the following schedule:

(i). first test, not later than September 20, 2021, may use up to a 6 gph leak rate;

(ii). second test, between September 20, 2021, and September 20, 2024, may use up to a 6 gph leak rate;

(iii). third test, between September 20, 2024, and September 20, 2025, shall use 3 gph leak rate;

(iv). subsequent tests, after September 20, 2025, begin using semiannual or annual line tightness testing according to the maximum leak rate per test section volume table above;

ii. perform vapor monitoring conducted in accordance with LAC 33:XI.701.A.5.b for a tracer compound placed in the tank system capable of detecting a 0.1 gallon per hour leak rate at least once every two years;

iii. perform inventory control conducted in accordance with Department of Defense Directive 4140.25; ATA Fuel Facility Operations and Maintenance Guidance Manual, or equivalent procedures at least once every 30 days that can detect a leak equal to or less than 0.5 percent of flow-through, and perform:

(a). a line tightness test conducted in accordance with Paragraph D 2.a of this Section using the leak rates for the semiannual test at least once every two years; or

(b). vapor monitoring or groundwater monitoring conducted in accordance with LAC 33:XI.701.A.5.b and c, respectively, for the stored regulated substance at least once every 30 days;

iv. another method approved by the department may be used if the owner and operator can demonstrate that the method can detect a release as effectively as any of the methods allowed in Paragraphs D.1.b.iD.1.b.iii of this Section. In comparing methods, the department shall consider the size of release that the method can detect and the frequency and reliability of detection.

c. Recordkeeping for Release Detection. Owners and operators shall maintain release detection records according to the recordkeeping requirements in LAC 33:XI.705.

E. Applicability of Closure Requirements for Previously Closed UST Systems. When directed by the department, the owner and operator of a UST system with field-constructed tanks or airport hydrant systems permanently closed before September 20, 2018, shall assess the excavation zone and close the UST system in accordance with LAC 33:XI.905 and 907 if releases from the UST system may, in the judgement of the department, pose a current or potential threat to human health and the environment.

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:2001 et seq.

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