Current through Register Vol. 41, No. 3, September 23, 2024
In order to prevent releases due to structural failure,
corrosion, or spills and overfills for as long as the UST system is used to
store regulated substances, all owners and operators of new UST systems must
meet the requirements in this section.
Tanks and piping installed or replaced on or after
September 15, 2010, must be secondarily contained and use interstitial
monitoring in accordance with subdivision 7 of
9VAC25-580-160,
except for suction piping that meets the requirements of subdivisions 2 a (2)
(a) through (e) of
9VAC25-580-140.
Secondary containment must be able to contain regulated substances leaked from
the primary containment until they are detected and removed and prevent the
release of regulated substances to the environment at any time during the
operational life of the UST system. For cases where the piping is considered to
be replaced, the entire piping run must be secondarily contained.
1. Tanks. Each tank must be properly designed
and constructed, and any portion underground that routinely contains product
must be protected from corrosion, in accordance with a code of practice
developed by a nationally recognized association or independent testing
laboratory as specified below:
a. The tank is
constructed of fiberglass-reinforced plastic;
NOTE: The following codes of practice may be used to comply
with subdivision 1 a of this section:
(1) Underwriters Laboratories Standard 1316,
Glass-Fiber-Reinforced Plastic Underground Storage Tanks for Petroleum
Products, Alcohols, and Alcohol-Gasoline Mixtures; or
(2) Underwriter's Laboratories of Canada S615
Standard for Reinforced Plastic Underground Tanks for Flammable and Combustible
Liquids.
b. The tank is
constructed of steel and cathodically protected in the following manner:
(1) The tank is coated with a suitable
dielectric material;
(2)
Field-installed cathodic protection systems are designed by a corrosion
expert;
(3) Impressed current
systems are designed to allow determination of current operating status as
required in subdivision 3 of
9VAC25-580-90;
and
(4) Cathodic protection systems
are operated and maintained in accordance with
9VAC25-580-90;
or
NOTE: The following codes of practice may be used to comply
with subdivision 1 b of this section:
(a) Steel Tank Institute Specification for
STI-P3® Specification and Manual for External
Corrosion Protection of Underground SteelStorage Tanks;
(b) Underwriters Laboratories Standard 1746,
External Corrosion Protection Systems for Steel Underground Storage
Tanks;
(c) Underwriters
Laboratories of Canada S603, Standard for Steel Underground Tanks for Flammable
and Combustible Liquids, and S603.1, Standard for External Corrosion Protection
Systems for Steel Underground Tanks for Flammable and Combustible Liquids, and
S631, Standard for Isolating Bushings for Steel Underground Tanks Protected
with External Corrosion Protection Systems
(d) Steel Tank Institute Standard F841,
Standard for Dual Wall Underground Steel Storage Tanks; or
(e) NACE International Standard Practice
SP0285, External Corrosion Control of Underground Storage Tank Systems by
Cathodic Protection, and Underwriters Laboratories Standard 58, Standard for
Steel Underground Tanks for Flammable and Combustible Liquids.
c. The tank is
constructed of steel and clad or jacketed with a noncorrodible material; or
NOTE: The following codes of practice may be used to comply
with subdivision 1 c of this section:
(1) Underwriters Laboratories Standard 1746,
External Corrosion Protection Systems for Steel Underground Storage
Tanks;
(2) Steel Tank Institute
ACT-100® Specification F894, Specification for
External Corrosion Protection of FRP Composite Steel Underground Storage
Tanks;
(3) Steel Tank Institute
ACT-100-U® Specification F961, Specification for
External Corrosion Protection of Composite Steel Underground Storage Tanks;
or
(4) Steel Tank Institute
Specification F922, Steel Tank Institute Specification for
Permatank®.
d. The tank construction and corrosion
protection are determined by the department to be designed to prevent the
release or threatened release of any stored regulated substance in a manner
that is no less protective of human health and the environment than
subdivisions 1 a, 1 b, and 1 c of this section.
2. Piping. The piping that routinely contains
regulated substances and is in contact with the ground must be properly
designed, constructed, and protected from corrosion in accordance with a code
of practice developed by a nationally recognized association or independent
testing laboratory as specified below:
a. The
piping is constructed of a noncorrodible material.
NOTE: The following codes of practice may be used to comply
with subdivision 2 a of this section:
(1) Underwriters Laboratories Standard 971,
Nonmetallic Underground Piping for Flammable Liquids; or
(2) Underwriters Laboratories of Canada
Standard S660, Standard for Nonmetallic Underground Piping for Flammable and
Combustible Liquids.
b.
The piping is constructed of steel and cathodically protected in the following
manner:
(1) The piping is coated with a
suitable dielectric material;
(2)
Field-installed cathodic protection systems are designed by a corrosion
expert;
(3) Impressed current
systems are designed to allow determination of current operating status as
required in subdivision 3 of
9VAC25-580-90;
and
(4) Cathodic protection systems
are operated and maintained in accordance with
9VAC25-580-90;
or
NOTE: The following codes of practice may be used to comply
with subdivision 2 b of this section:
(a) American Petroleum Institute Recommended
Practice 1632, Cathodic Protection of Underground Petroleum Storage Tanks and
Piping Systems;
(b) Underwriters
Laboratories Subject 971A, Outline of Investigation for Metallic Underground
Fuel Pipe;
(c) Steel Tank Institute
Recommended Practice R892, Recommended Practice for Corrosion Protection of
Underground Piping Networks Associated with Liquid Storage and Dispensing
Systems;
(d) NACE International
Standard Practice SP0169, Control of External Corrosion on Underground or
Submerged Metallic Piping Systems; or
(e) NACE International Standard Practice
SP0285, External Corrosion Control of Underground Storage Tank Systems by
Cathodic Protection.
c. The piping construction and corrosion
protection are determined by the department to be designed to prevent the
release or threatened release of any stored regulated substance in a manner
that is no less protective of human health and the environment than the
requirements in subdivisions 2 a and 2 b of this section.
3. Spill and overfill prevention equipment.
a. Except as provided in subdivisions 3 b and
3 c of this section, to prevent spilling and overfilling associated with
product transfer to the UST system, owners and operators must use the following
spill and overfill prevention equipment:
(1)
Spill prevention equipment that will prevent release of product to the
environment when the transfer hose is detached from the fill pipe (for example,
a spill catchment basin); and
(2)
Overfill prevention equipment that will:
(a)
Automatically shut off flow into the tank when the tank is no more than 95%
full;
(b) Alert the transfer
operator when the tank is no more than 90% full by restricting the flow into
the tank or triggering a high-level alarm; or
(c) Restrict the flow 30 minutes prior to
overfilling, alert the transfer operator with a high level alarm one minute
before overfilling, or automatically shut off flow into the tank so that none
of the fittings located on top of the tank are exposed to product due to
overfilling.
b. Owners and operators are not required to
use the spill and overfill prevention equipment specified in subdivision 3 a of
this section if:
(1) Alternative equipment is
used that is determined by the department to be no less protective of human
health and the environment than the equipment specified in subdivision 3 a (1)
or 3 a (2) of this section; or
(2)
The UST system is filled by transfers of no more than 25 gallons at one
time.
c. Flow
restrictors used in vent lines may not be used to comply with subdivision 3 a
(2) of this section when overfill protection is installed or replaced on or
after January 1, 2018.
d. Spill and
overfill protection equipment must be periodically tested or inspected in
accordance with
9VAC25-580-82.
4. Installation.
a. The UST system must be properly installed
in accordance with a code of practice developed by a nationally recognized
association or independent testing laboratory and in accordance with the
manufacturer's instructions.
b.
Owners and operators must obtain a permit and the required inspections in
accordance with the provisions of the Virginia Uniform Statewide Building Code
(§ 36-97 et seq. of the Code of Virginia). No UST system shall be
installed or placed into use without the owner and operator having obtained the
required permit and inspections from the building official under the provisions
of the Virginia Uniform Statewide Building Code.
In the case of state-owned facilities, the Department of
General Services shall function as the building official in accordance with
§ 36-98.1 of the Code of Virginia.
In the case of federal facilities, the building official
must be contacted. Owners and operators must obtain a permit and the required
inspections must be issued in accordance with the provisions of the Virginia
Uniform Statewide Building Code.
NOTE: Tank and piping system installation practices and
procedures described in the following codes of practice may be used to comply
with the requirements of subdivision 4 of this section:
(1) American Petroleum Institute Publication
1615, Installation of Underground Petroleum Storage System;
(2) Petroleum Equipment Institute Publication
RP100, Recommended Practices for Installation of Underground Liquid Storage
Systems; or
(3) National Fire
Protection Association Standard 30, Flammable and Combustible Liquids Code and
Standard 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages.
NOTE: These industry codes require that prior to bringing
the system into use the following tests be performed:
(i) tank tightness test (air);
(ii) pipe tightness test (air or
hydrostatic); and
(iii) precision
system test.
5. Certification of installation. All owners
and operators must ensure that one or more of the following methods of
certification, testing, or inspection in subdivisions 5 a through 5 d of this
section is performed, and a permit has been issued in accordance with the
provisions of the Virginia Uniform Statewide Building Code to demonstrate
compliance with subdivision 4 of this section. A certification of compliance on
the UST Notification form must be submitted to the department in accordance
with
9VAC25-580-70.
a. The installer has been certified by the
tank and piping manufacturers;
b.
The installation has been inspected and certified by a registered professional
engineer with education and experience in UST system installation;
c. All work listed in the manufacturer's
installation checklists has been completed; or
d. The owner and operator have complied with
another method for ensuring compliance with subdivision 4 of this section that
is determined by the department to be no less protective of human health and
the environment.
6.
Release detection. Release detection shall be provided in accordance with Part
IV (9VAC25-580-130
et seq.) of this chapter.
7.
Dispenser systems. Each UST system must be equipped with under-dispenser
containment for any new dispenser system installed on or after September 15,
2010.
a. A dispenser system is considered new
when both the dispenser and the equipment needed to connect the dispenser to
the underground storage tank system are installed at an UST facility. The
equipment necessary to connect the dispenser to the underground storage tank
system includes check valves, shear valves, unburied risers or flexible
connectors, or other transitional components that are underneath the dispenser
and connect the dispenser to the underground piping.
b. Under-dispenser containment must be
liquid-tight on its sides, bottom, and at any penetrations. Under-dispenser
containment must allow for visual inspection and access to the components in
the containment system or be periodically monitored for leaks from the
dispenser system.
Statutory Authority: §§ 62.1-44.15 and
62.1-44.34:9 of the Code of Virginia;
42 USC §
6901 et seq.; 40 CFR Parts 280 and
281.
