A vapor balance system will be assumed to comply with the specified
emission limitation of §115.221 of this title (relating to Emission
Specifications) if the following conditions are met:
(1) the container is equipped with a submerged fill
pipe as defined in §101.1 of this title (relating to Definitions).
The path through the submerged fill pipe to the bottom of the tank
must not be obstructed by a screen, grate, or similar device whose
presence would preclude the determination of the submerged fill pipe's
proximity to the tank bottom while the submerged fill tube is properly
installed;
(2) a vapor-tight return line is connected before gasoline
can be transferred into the storage container;
(3) no avoidable gasoline leaks, as detected by sight,
sound, or smell, exist anywhere in the liquid transfer or vapor balance
systems;
(4) the vapor return line's cross-sectional area is
at least one-half of the product drop line's cross-sectional area;
(5) in the Beaumont-Port Arthur, Dallas-Fort Worth,
El Paso, and Houston-Galveston-Brazoria areas and in the covered attainment
counties, as defined in §115.10 of this title (relating to Definitions),
the only atmospheric emission during gasoline transfer into the storage
container is through a storage container vent line equipped with a
pressure-vacuum relief valve set to open at a pressure of no more
than eight ounces per square inch (3.4 kilopascals (kPa));
(6) after unloading, the tank-truck tank is kept vapor-tight
until the vapors in the tank-truck tank are returned to a loading,
cleaning, or degassing operation and discharged in accordance with
the control requirements of that operation;
(7) the gauge pressure in the tank-truck tank does
not exceed 18 inches of water (4.5 kPa) or vacuum exceed six inches
of water (1.5 kPa);
(8) no leak, as defined in §101.1 of this title,
exists from potential leak sources when measured with a hydrocarbon
gas analyzer;
(9) in the Beaumont-Port Arthur, Dallas-Fort Worth,
El Paso, and Houston-Galveston-Brazoria areas, any storage tank installed
after November 15, 1993, which is required to install Stage I control
equipment must be equipped with a dual-point vapor balance system,
as defined in §115.10 of this title. In addition, any modification
to a storage tank existing prior to November 15, 1993, requiring excavation
of the top of the storage tank must be equipped with a dual-point
vapor balance system, even if the original installation utilized coaxial
Stage I connections;
(10) in the covered attainment counties, any storage
tank installed after December 22, 1998, which is required to install
Stage I control equipment must be equipped with a dual-point vapor
balance system, as defined in §115.10 of this title. In addition,
any modification to a storage tank existing prior to December 22,
1998, requiring excavation of the top of the storage tank must be
equipped with a dual-point vapor balance system, even if the original
installation utilized coaxial Stage I connections; and
(11) any gasoline dispensing facility that no longer
meets an exemption in §115.227 of this title (relating to Exemptions)
because of an increase in throughput shall have 120 days to come into
compliance with the provisions of this section and will remain subject
to the provisions of this section, even if its gasoline throughput
later falls below exemption limits. However, if gasoline throughput
exceeds the exemption limit due to a natural disaster or emergency
condition for a period not to exceed one month, upon written request,
the executive director may grant a facility continued exempt status.
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| Source Note: The provisions of this §115.222 adopted to be effective February 19, 1990, 15 TexReg 549; amended to be effective July 17, 1991, 16 TexReg 3720; amended to be effective August 1, 1992, 17 TexReg 4683; amended to be effective December 3, 1993, 18 TexReg 8538; amended to be effective May 22, 1997, 22 TexReg 4213; amended to be effective July 21, 1999, 24 TexReg 5488; amended to be effective April 13, 2005, 30 TexReg 2069; amended to be effective October 2, 2014, 39 TexReg 7745 |
