Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 580 - UNDERGROUND STORAGE TANKS: TECHNICAL STANDARDS AND CORRECTIVE ACTION REQUIREMENTS › Part X - UST Systems with Field-Constructed Tanks and Airport Hydrant Fuel Distribution Systems › Section 9VAC25-580-390 - Additions, exceptions, and alternatives for UST systems with field-constructed tanks and airport hydrant systems

Current through Register Vol. 40, No. 24, July 15, 2024
A. Exception 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 must meet the secondary containment requirement when
				  installed or replaced.
B. Upgrade
				  requirements. Not later than January 1, 2021, airport hydrant systems and UST
				  systems with field-constructed tanks where installation commenced before
				  January 1, 2018, must meet the following requirements or be permanently closed
				  pursuant to Part VII (9VAC25-580-310
				  et seq.) of this chapter.
1. Corrosion
				  protection. UST system components in contact with the ground that routinely
				  contain regulated substances must meet one of the following:
a. Except as provided in subsection A of this
				  section, the new UST system performance standards for tanks at subdivision 1 of
				  9VAC25-580-50
				  and for piping at subdivision 2 at
				  9VAC25-580-50;
				  or
b. Be constructed of metal and
				  cathodically protected according to a code of practice developed by a
				  nationally recognized association or independent testing laboratory and meets
				  the following:
(1) Cathodic protection must
				  meet the requirements of subdivisions 1 b (2), (3), and (4) of
				  9VAC25-580-50
				  for tanks and subdivisions 2 b (2), (3), and (4) of
				  9VAC25-580-50
				  for piping.
(2) Tanks older than 10
				  years 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.
Note: The following codes of practice may be used to comply
					 with subsection B of this section:
(a)
				  NACE International Standard Practice SP0285, External Control of Underground
				  Storage Tank Systems by Cathodic Protection;
(b) NACE International Standard Practice
				  SP0169, Control of External Corrosion on Underground or Submerged Metallic
				  Piping Systems;
(c) National Leak
				  Prevention Association Standard 631, Chapter C, Internal Inspection of Steel
				  Tanks for Retrofit of Cathodic Protection; or
(d) American Society for Testing and
				  Materials Standard G158, Standard Guide for Three Methods of Assessing Buried
				  Steel Tanks.