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 Applicability and Definitions), the following
control requirements apply. In Gregg, Nueces, and Victoria Counties,
the control requirements in paragraph (5) of this section apply.
(1) The owner or operator of each vehicle refinishing
(body shop) operation shall minimize volatile organic compounds (VOC)
emissions during equipment cleanup by using the following procedures:
(A) install and operate a system that totally encloses
spray guns, cups, nozzles, bowls, and other parts during washing,
rinsing, and draining procedures. Non-enclosed cleaners may be used
if the vapor pressure of the cleaning solvent is less than 100 millimeters
of mercury (mm Hg) at 20 degrees Celsius (68 degrees Fahrenheit) and
the solvent is directed towards a drain that leads directly to an
enclosed remote reservoir;
(B) keep all wash solvents in an enclosed reservoir
that is covered at all times, except when being refilled with fresh
solvents; and
(C) keep all waste solvents and other cleaning materials
in closed containers.
(2) Each vehicle refinishing (body shop) operation
must use coating application equipment with a transfer efficiency
of at least 65%, unless otherwise specified in an alternate means
of control approved by the executive director in accordance with §115.910
of this title (relating to Availability of Alternate Means of Control).
High-volume, low-pressure (HVLP) spray guns are assumed to comply
with the 65% transfer efficiency requirement.
(3) The following requirements apply to each wood furniture
manufacturing facility subject to §115.421(15) of this title
(relating to Emission Specifications).
(A) No compounds containing more than 8.0% by weight
of VOC may be used for cleaning spray booth components other than
conveyors, continuous coaters and their enclosures, and/or metal filters,
unless the spray booth is being refurbished. If the spray booth is
being refurbished, that is, the spray booth coating or other material
used to cover the booth is being replaced, no more than 1.0 gallon
of organic solvent may be used to prepare the booth prior to applying
the booth coating.
(B) Normally closed containers must be used for storage
of finishing, cleaning, and washoff materials.
(C) Conventional air spray guns may not be used for
applying finishing materials except under one or more of the following
circumstances:
(i) to apply finishing materials that have a VOC content
no greater than 1.0 kilogram of VOC per kilogram of solids (1.0 pound
of VOC per pound of solids), as delivered to the application system;
(ii) for touch-up and repair under the following circumstances:
(I) the finishing materials are applied after completion
of the finishing operation; or
(II) the finishing materials are applied after the
stain and before any other type of finishing material is applied,
and the finishing materials are applied from a container that has
a volume of no more than 2.0 gallons.
(iii) if spray is automated, that is, the spray gun
is aimed and triggered automatically, not manually;
(iv) if emissions from the finishing application station
are directed to a vapor control system;
(v) the conventional air gun is used to apply finishing
materials and the cumulative total usage of that finishing material
is no more than 5.0% of the total gallons of finishing material used
during that semiannual period; or
(vi) the conventional air gun is used to apply stain
on a part that:
(I) the production speed is too high or the part shape
is too complex for one operator to coat the part and the application
station is not large enough to accommodate an additional operator;
or
(II) the excessively large vertical spray area of the
part makes it difficult to avoid sagging or runs in the stain.
(D) All organic solvent used for line cleaning or to
clean spray guns must be pumped or drained into a normally closed
container.
(E) Emissions from washoff operations must be minimized
by:
(i) using normally closed tanks for washoff; and
(ii) minimizing dripping by tilting or rotating the
part to drain as much organic solvent as possible.
(4) The following requirements apply to each shipbuilding
and ship repair surface coating facility subject to §115.421(16)
of this title.
(A) All handling and transfer of VOC-containing materials
to and from containers, tanks, vats, drums, and piping systems must
be conducted in a manner that minimizes spills.
(B) All containers, tanks, vats, drums, and piping
systems must be free of cracks, holes, and other defects and remain
closed unless materials are being added to or removed from them.
(C) All organic solvent used for line cleaning or to
clean spray guns must be pumped or drained into a normally closed
container.
(5) The following requirements apply to each aerospace
vehicle or component coating process subject to §115.421(10)
of this title.
(A) One or more of the following application techniques
must be used to apply any primer or topcoat to aerospace vehicles
or components: flow/curtain coating; dip coating; roll coating; brush
coating; cotton-tipped swab application; electrodeposition coating;
HVLP spraying; electrostatic spraying; or other coating application
methods that achieve emission reductions equivalent to HVLP or electrostatic
spray application methods, unless one of the following situations
apply:
(i) any situation that normally requires the use of
an airbrush or an extension on the spray gun to properly reach limited
access spaces;
(ii) the application of specialty coatings;
(iii) the application of coatings that contain fillers
that adversely affect atomization with HVLP spray guns and that the
executive director has determined cannot be applied by any of the
specified application methods;
(iv) the application of coatings that normally have
a dried film thickness of less than 0.0013 centimeter (0.0005 in.)
and that the executive director has determined cannot be applied by
any of the specified application methods in this subparagraph;
(v) the use of airbrush application methods for stenciling,
lettering, and other identification markings;
(vi) the use of aerosol coating (spray paint) application
methods; and
(vii) touch-up and repair operations.
(B) Cleaning solvents used in hand-wipe cleaning operations
must meet the definition of aqueous cleaning solvent in §115.420(c)(1)(I)
of this title (relating to Surface Coating Definitions) or have a
VOC composite vapor pressure less than or equal to 45 mm Hg at 20
degrees Celsius, unless one of the following situations apply:
(i) cleaning during the manufacture, assembly, installation,
maintenance, or testing of components of breathing oxygen systems
that are exposed to the breathing oxygen;
(ii) cleaning during the manufacture, assembly, installation,
maintenance, or testing of parts, subassemblies, or assemblies that
are exposed to strong oxidizers or reducers (e.g., nitrogen tetroxide,
liquid oxygen, hydrazine);
(iii) cleaning and surface activation prior to adhesive
bonding;
(iv) cleaning of electronics parts and assemblies containing
electronics parts;
(v) cleaning of aircraft and ground support equipment
fluid systems that are exposed to the fluid, including air-to-air
heat exchangers and hydraulic fluid systems;
(vi) cleaning of fuel cells, fuel tanks, and confined
spaces;
(vii) surface cleaning of solar cells, coated optics,
and thermal control surfaces;
(viii) cleaning during fabrication, assembly, installation,
and maintenance of upholstery, curtains, carpet, and other textile
materials used on the interior of the aircraft;
(ix) cleaning of metallic and nonmetallic materials
used in honeycomb cores during the manufacture or maintenance of these
cores, and cleaning of the completed cores used in the manufacture
of aerospace vehicles or components;
(x) cleaning of aircraft transparencies, polycarbonate,
or glass substrates;
(xi) cleaning and solvent usage associated with research
and development, quality control, or laboratory testing;
(xii) cleaning operations, using nonflammable liquids,
conducted within five feet of energized electrical systems. Energized
electrical systems means any alternating current or direct current
electrical circuit on an assembled aircraft once electrical power
is connected, including interior passenger and cargo areas, wheel
wells and tail sections; and
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