Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 5 - STATE AIR POLLUTION CONTROL BOARD › Chapter 40 - EXISTING STATIONARY SOURCES › Part II - Emission Standards › Article 56 - Emission Standards for Letterpress Printing Operations in the Northern Virginia Volatile Organic Compound Emissions Control Area, 8-hour Ozone Standard (Rule 4-56) › Section 9VAC5-40-8382 - Definitions

Current through Register Vol. 40, No. 24, July 15, 2024
A. For the purpose
					 of applying this article in the context of the regulations for the control and
					 abatement of air pollution and related uses, the words or terms shall have the
					 meanings given them in subsection C of this section.
B. Unless otherwise required by context, all
					 terms not defined in this section shall have the meanings given them in
					 9VAC5-170 (Regulation for General Administration), 9VAC5-10 (General
					 Definitions), or commonly ascribed to them by recognized authorities, in that
					 order of priority.
C. Terms
					 defined.
"Cleaning materials" means any washes, cleaners,
						solvents, or rejuvenators that are used to remove excess printing inks, oils,
						and residual paper from a press, press equipment, or press parts, or used to
						remove dried ink from areas around a press. Cleaning materials include solvents
						and cleaners used for manual cleaning, and cleaning solutions used by automatic
						cleaning systems such as roller wash and type wash. Cleaning materials do not
						include cleaners used for cleaning electronic components of a press, pre-press
						cleaning operations (e.g., platemaking), post-press cleaning operations (e.g.,
						binding), cleaning supplies such as detergents used to clean the floor (other
						than to remove dried ink from areas around a press), and cleaning performed in
						parts washers and cold cleaners subject to Article 47 (9VAC5-40-6820 et seq.)
						of Part II of 9VAC5-40 (Existing Stationary Sources).
"Composite partial vapor pressure" means the sum of the
						partial pressures of the compounds defined as volatile organic compounds.
						Composite partial vapor pressure is calculated as follows:
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						image
where:
Wi
=
Weight of the "i"th VOC compound, in
								  grams.
Ww
=
Weight of water, in grams.
We
=
Weight of exempt compound, in grams.
MWi
=
Molecular weight of the "i"th VOC compound, in
								  grams/gram-mole.
MWw
=
Molecular weight of water, in
								  grams/gram-mole.
MWe
=
Molecular weight of exempt compound, in
								  grams/gram-mole.
PPc
=
VOC composite partial pressure at 20°C, in
								  millimeters of mercury (mm Hg).
VPi
=
Vapor pressure of the "i"th VOC compound at
								  20°C, in mm Hg.
"First installation date" means the date that a control
						device is first installed for the purpose of controlling emissions. The first
						installation date does not change if the control device is later moved to a new
						location or installed on a different press.
"Heatset" means a printing process in which heat from a
						dryer is used to evaporate ink oils from the substrate.
"Letterpress printing" means a printing process in which
						the image area is raised relative to the nonimage area and paste ink is
						transferred to the substrate directly from the image surface.
"Letterpress printing operation" means one or more
						printing processes employing letterpress printing on printing presses and the
						related processes necessary to directly support the operation of those presses
						including, but not limited to, cleaning, pre-press, and post-press
						operations.
"Non-heatset" means a printing process in which the
						printing inks are set and dried by absorption or oxidation rather than heat.
						For the purposes of this article, UV-cured and electron beam-cured inks are
						considered non-heatset.
"Press" means a printing production assembly composed of
						one or more units to produce a printed substrate (sheet or web).
"Printing" means a photomechanical process in which a
						transfer of text, designs, and images occurs through contact of an image
						carrier with a substrate.
"Printing process" means any operation or system wherein
						printing ink or a combination of printing ink and surface coating is applied,
						dried, or cured and that is subject to the same emission standard. A printing
						process may include any equipment that applies, conveys, dries, or cures inks
						or surface coatings, including, but not limited to, flow coaters, flashoff
						areas, presses, digital output devices, heaters, dryers, drying areas, and
						ovens.
"Sheet-fed" means a printing process in which individual
						sheets of substrate are fed into the press sequentially.
"Theoretical potential to emit" means for the purposes
						of this article the maximum capacity of a letterpress printing process to emit
						VOC and shall be based on emissions at design capacity or maximum production
						and maximum operating hours (8,760 hours/year) before add-on controls, unless
						the letterpress printing process is subject to state and federally enforceable
						permit conditions that limit production rates or hours of operation.
"12-month rolling period" means a period that is
						determined monthly and consists of the previous 12 consecutive calendar
						months.
"Unit" means, for the purposes of this article, the
						smallest complete printing component, composed of an inking system, of a
						letterpress printing press.
"VOC" means volatile organic compound.
"Web" means a continuous roll of printing
						substrate.
Statutory Authority: § 10.1-1308 of the Code of
						  Virginia; §§ 110, 111, 123, 129, 171, 172, and 182 of the federal
						  Clean Air Act (40 CFR Parts 51 and 60).