The owner or operator of an affected source category within
a plant in the Beaumont-Port Arthur, Bexar County, Dallas-Fort Worth,
El Paso, and Houston-Galveston-Brazoria areas, as defined in §115.10
of this title (relating to Definitions), shall comply with the following
control requirements. Any component of a wastewater storage, handling,
transfer, or treatment facility, if the component contains an affected
volatile organic compounds (VOC) wastewater stream, shall be controlled
in accordance with either paragraph (1) or (2) of this section, except
for properly operated biotreatment units which shall meet the requirements
of paragraph (3) of this section. In the Dallas-Fort Worth and El
Paso areas, and until December 31, 2002 in the Houston-Galveston-Brazoria
area, the control requirements apply from the point of generation
of an affected VOC wastewater stream until the affected VOC wastewater
stream is either returned to a process unit or is treated to remove
VOC so that the wastewater stream no longer meets the definition of
an affected VOC wastewater stream. In the Beaumont-Port Arthur and
the Bexar County areas, and after December 31, 2002 in the Houston-Galveston-Brazoria,
the control requirements apply from the point of generation of an
affected VOC wastewater stream until the affected VOC wastewater stream
is either returned to a process unit, or is treated to reduce the
VOC content of the wastewater stream by 90% by weight and also reduce
the VOC content of the same VOC wastewater stream to less than 1,000
parts per million by weight. For wastewater streams which are combined
and then treated to remove VOC, the amount of VOC to be removed from
the combined wastewater stream shall be at least the total amount
of VOC that would be removed to treat each individual affected VOC
wastewater stream so that they no longer meet the definition of affected
VOC wastewater stream, except for properly operated biotreatment units
which shall meet the requirements of paragraph (3) of this section.
For this division, a component of a wastewater storage, handling,
transfer, or treatment facility shall include, but is not limited
to, wastewater storage tanks, surface impoundments, wastewater drains,
junction boxes, lift stations, weirs, and oil-water separators.
(1) The wastewater component shall meet the following
requirements.
(A) All components shall be fully covered or be equipped
with water seal controls. For any component equipped with water seal
controls, the only acceptable alternative to water as the sealing
liquid in a water seal is the use of ethylene glycol, propylene glycol,
or other low vapor pressure antifreeze, which may be used only during
the period of November through February. For any process drain not
equipped with water seal controls, the process drain shall be equipped
with a gasketed seal, or a tightly-fitting cap or plug.
(B) All openings shall be closed and sealed, except
when the opening is in actual use for its intended purpose or the
component is maintained at a pressure less than atmospheric pressure.
(C) All liquid contents shall be totally enclosed.
(D) For junction boxes and vented covers, the following
requirements apply.
(i) In the Dallas-Fort Worth and El Paso areas, and
until December 31, 2002 in the Houston-Galveston-Brazoria area, if
any cover, other than a junction box cover, is equipped with a vent,
the vent shall be equipped with either a vapor control system which
maintains a minimum control efficiency of 90% or a closed system which
prevents the flow of VOC vapors from the vent during normal operation.
Any junction box vent shall be equipped with a vent pipe at least
90 centimeters (cm) (36 inches (in.)) in length and no more than 10.2
cm (4.0 in.) in diameter.
(ii) In the Beaumont-Port Arthur and Bexar County areas,
and after December 31, 2002 in the Houston-Galveston-Brazoria area,
the following requirements apply.
(I) If any cover or junction box cover, except for
junction boxes described in subclause (II) of this clause, is equipped
with a vent, the vent shall be equipped with either a vapor control
system which maintains a minimum control efficiency of 90% or a closed
system which prevents the flow of VOC vapors from the vent during
normal operation.
(II) Any junction box that is filled and emptied by
gravity flow (i.e., there is no pump) or is operated with no more
than slight fluctuations in the liquid level may be vented to the
atmosphere, provided it is equipped with:
(-a-) a vent pipe at least 90 cm (36 in.) in length
and no more than 10.2 cm (4.0 in.) in diameter; and
(-b-) water seal controls which are installed and maintained
at the wastewater entrance(s) to or exit from the junction box restricting
ventilation in the individual drain system and between components
in the individual drain system.
(E) All gauging and sampling devices shall be vapor-tight
except during gauging or sampling.
(F) Any loading or unloading to or from a portable
container by pumping shall be performed with a submerged fill pipe.
(G) All seals and cover connections shall be maintained
in proper condition. For purposes of this paragraph, "proper condition"
means that covers shall have a tight seal around the edge and shall
be kept in place except as allowed by this division, that seals shall
not be broken or have gaps, and that sewer lines shall have no visible
gaps or cracks in joints, seals, or other emission interfaces.
(H) If any seal or cover connection is found to not
be in proper condition, a first attempt at repair shall be made no
later than five calendar days after the leak or improper condition
is found. The repair or correction shall be completed as soon as possible
but no later than 15 calendar days after detection, unless the repair
or correction is technically infeasible without requiring a process
unit shutdown, in which case the repair or correction shall be made
at the next process unit shutdown. Test Method 21 must be used to
confirm that a leak or improper condition is repaired, and the following
records shall be maintained:
(i) the date on which a leak or improper condition
is discovered;
(ii) the date on which a first attempt at repair was
made to correct the leak or improper condition;
(iii) the date on which a leak or improper condition
is repaired; and
(iv) the date and instrument reading of the recheck
procedure after a leak or improper condition is repaired.
(2) If a wastewater component is equipped with an internal
or external floating roof, it shall meet the following requirements.
(A) All openings in an internal or external floating
roof except for automatic bleeder vents (vacuum breaker vents) and
rim space vents shall provide a projection below the liquid surface
or be equipped with a cover, seal, or lid. Any cover, seal, or lid
shall be in a closed (i.e., no visible gap) position at all times
except when the opening is in actual use for its intended purpose.
(B) Automatic bleeder vents (vacuum breaker vents)
shall be closed at all times except when the roof is being floated
off or landed on the roof leg supports.
(C) Rim vents, if provided, shall be set to open only
when the roof is being floated off the roof leg supports or at the
manufacturer's recommended setting.
(D) Any roof drain that empties into the stored liquid
shall be provided with a slotted membrane fabric cover that covers
at least 90% of the area of the opening.
(E) There shall be no visible holes, tears, or other
openings in any seal or seal fabric.
(F) For external floating roof storage tanks, the secondary
seals shall be the rim-mounted type (i.e., the seal shall be continuous
from the floating roof to the tank wall). The accumulated area of
gaps that exceed 1/8 in. (0.32 cm) in width between the secondary
seal and tank wall shall be no greater than 1.0 in.
2 per foot (21 cm2 /meter) of tank
diameter.
(3) In the Beaumont-Port Arthur and Bexar County areas,
and after December 31, 2002 in the Houston-Galveston-Brazoria area,
each properly operated biotreatment unit shall meet the following
requirements.
(A) The VOC content of the wastewater shall be reduced
by 90% by weight; and
(B) The average concentration of suspended biomass
maintained in the aeration basin of the biotreatment unit shall equal
or exceed 1.0 kilogram per cubic meter (kg/m3 ),
measured as total suspended solids.
(4) Any wastewater component that becomes subject to
this division by exceeding the provisions of §115.147 of this
title (relating to Exemptions) or an affected VOC wastewater stream
as defined in §115.140 of this title (relating to Industrial
Wastewater Definitions) will remain subject to the requirements of
this division, even if the component later falls below those provisions,
unless and until emissions are reduced to no more than the controlled
emissions level existing prior to the implementation of the project
by which throughput or emission rate was reduced to less than the
applicable exemption levels in §115.147 of this title; and
(A) the project by which throughput or emission rate
was reduced is authorized by any permit or permit amendment or standard
permit or permit by rule required by Chapter 116 or Chapter 106 of
this title (relating to Control of Air Pollution by Permits for New
Construction or Modification; and Permits by Rule). If a permit by
rule is available for the project, compliance with this division must
be maintained for 30 days after the filing of documentation of compliance
with that permit by rule; or
(B) if authorization by permit, permit amendment, standard
permit, or permit by rule is not required for the project, the owner
or operator has given the executive director 30 days' notice of the
project in writing.
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