Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 5 - STATE AIR POLLUTION CONTROL BOARD › Chapter 40 - EXISTING STATIONARY SOURCES › Part II - Emission Standards › Article 53 - Emission Standards for Lithographic Printing Processes (Rule 4-53) › Section 9VAC5-40-7810 - Definitions

Current through Register Vol. 40, No. 24, July 15, 2024
A. For the purpose
					 of these regulations and subsequent amendments or any orders issued by the
					 board, the words or terms shall have the meanings given them in subsection C of
					 this section.
B. As used in this
					 article, all terms not defined here shall have the meanings given them in 9VAC5
					 Chapter 10 (9VAC5-10-10 et seq.), unless otherwise required by
					 context.
C. Terms defined.
"Alcohol" means any of the following compounds when used
						as a fountain solution additive: ethanol, n-propanol, and isopropanol.
"Alcohol substitute" means any nonalcohol additive that
						contains volatile organic compounds and is used in the fountain
						solution.
"Batch" means a supply of fountain solution that is
						prepared and used without alteration until completely used or removed from the
						printing process.
"Cleaning solution" means any blanket or roller wash used
						to remove ink and debris from the operating surface of a printing press.
"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:
View 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 g/g-mole
MWw = Molecular weight of water,
						in g/g-mole
MWe = Molecular weight of exempt
						compound, in g/g-mole
PPc = VOC composite partial
						pressure at 20°C, in mm Hg.
VPi = Vapor pressure of the "i"th
						VOC compound at 20°C, in mm Hg.
"Fountain solution" means any mixture of water, volatile
						and nonvolatile chemicals, and additives applied to a lithographic plate to
						repel ink from the non-image area on the plate.
"Heatset" means a lithographic printing process in which
						heat from a dryer is used to evaporate ink oils from the substrate.
"Lithographic printing" means a planographic printing
						process in which the image and nonimage areas are chemically differentiated
						with the image area being oil-receptive and the nonimage area being
						water-receptive.
"Non-heatset" means a lithographic 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 which is subject to the same emission standard. May include
						any equipment which applies, conveys, dries or cures inks or surface coatings,
						including, but not limited to, flow coaters, flashoff areas, air dryers, drying
						areas and ovens. It is not necessary for a printing process to have an oven,
						flashoff area or drying area to be included in this definition.
"Sheet-fed" means a lithographic printing process in
						which individual sheets of substrate are fed into the press
						sequentially.
"Unit" means the smallest complete printing component,
						composed of an inking and dampening system, of a printing press.
"Web" means a continuous roll of printing
						substrate.
Statutory Authority
§ 10.1-1308 of the Code of Virginia.