Rhode Island Code of Regulations › Title 250 - Department of Environmental Management › Chapter 120 - Air Resources › Subchapter 05 - Air Pollution Control › Part 22 - Air Pollution Control Regulation No. 22 - Air Toxics › Section 250-RICR-120-05-22.4 - Definitions

Current through June 14, 2024
A. Unless otherwise expressly defined in this
				  section, the terms used in this regulation shall be defined by reference to
				  Part 0 of this Subchapter (General Definitions). As used in this regulation,
				  the following terms shall, where the context permits, be construed as follows:
1. "Acceptable ambient level" or "AAL" means
				  the maximum ambient air concentration of a listed toxic air contaminant that
				  may be contributed by a stationary source, at or beyond that facility's
				  property line, as delineated in §§
											22.9 and
				  22.10 of this Part,
				  averaged over the time period specified in those tables.
2. "Carcinogen" means a listed toxic
				  substance in §§
											22.9,
				  22.10, or
				  22.11 of this
				  Part.
3. "Construction" means any
				  physical change or change in the method of operation (including fabricating,
				  erecting, locating, modification or demolition of an emissions unit) which
				  would result in a change in actual emissions.
4. "Existing source" means a stationary
				  source which is in existence on the effective date of this regulation or, for a
				  listed toxic substance that was added to §
											22.9 of this Part, in a
				  subsequent amendment of this regulation, a stationary source that was in
				  existence on the effective date of that amendment.
5. "Imminent threat" means a condition in
				  which the emissions of one or more listed toxic air contaminants from a
				  facility can result in ambient air levels that, if not abated in a reasonable
				  time period, as determined by the Director, have the potential to cause serious
				  health effects to members of the public.
6. "Impact" means the ground level
				  concentration of a pollutant resulting from emissions of that pollutant from a
				  facility. Impact does not include background ambient air concentrations of the
				  pollutant or concentrations of the pollutant resulting from emissions from
				  other facilities.
7. "Listed toxic
				  air contaminant" means any listed toxic substance emitted to the atmosphere as
				  dust, fume, gas, mist, smoke, vapor, or soot.
8. "Listed toxic substance" means any
				  substance that is listed in §
											22.9 of this
				  Part.
9. "Major fuel-burning
				  modification" means any physical change or change in the method of operation of
				  a major fuel-burning source that would result in a net emission increase, as
				  defined in Part 9 of this Subchapter (Air Pollution Control Permits), of air
				  pollutants from the combustion of fuel oil, propane, natural gas, or a
				  combination of those fuels equal to or in excess of:
a. Fifteen (15) tons per year of particulate
				  matter less than 2.5 microns in diameter,
b. Twenty-five (25) tons per year of nitrogen
				  oxides or volatile organic compounds,
c. Forty (40) tons per year of sulfur
				  dioxide, or
d. One hundred (100)
				  tons per year of carbon monoxide.
10. "Major fuel-burning source" means any
				  stationary source that emits or has the potential to emit, as defined in Part 9
				  of this Subchapter (Air Pollution Control Permits), air pollutants from the
				  combustion of fuel oil, propane, natural gas, or a combination of those fuels
				  equal to or in excess of:
a. Fifty (50) tons
				  per year of nitrogen oxides or volatile organic compounds or
b. One hundred (100) tons per year of carbon
				  monoxide, sulfur dioxide or particulate matter less than 2.5 microns in
				  diameter.
11.
				  "Modification" means any physical or operational change to any machine,
				  equipment, device, article or facility which may result in an increased
				  emission rate to the atmosphere of any air contaminant. The following shall not
				  be considered a modification:
a. Routine
				  maintenance, repair, and replacement of any machine, equipment, device, article
				  or facility or parts;
b. Increase
				  in production rate of any machine, equipment, device, article or facility based
				  solely upon the capabilities of existing process equipment;
c. Increase in hours of operation up to the
				  maximum hours allowed in any federally enforceable air pollution control permit
				  or air toxics operating permit; and
d. Use of an alternative fuel or raw material
				  if the machine, equipment, device, article or facility was designed and
				  permitted to accommodate that alternative use.
12. "Perchloroethylene dry cleaning facility"
				  means a facility engaged in the cleaning of clothing, garments, textiles,
				  fabrics, leather goods and/or similar items by means of one or more washes in
				  perchloroethylene, extraction of excess perchloroethylene by spinning, and
				  drying by tumbling in an airstream. The facility includes, but is not limited
				  to, any washer, dryer, filter and purification system, waste disposal system,
				  holding tank, pump, air pollution control equipment and attendant piping,
				  valves and stacks.
13.
				  "Reformulation" means the elimination or reduction of the use of one or more
				  listed toxic substances by replacement with one or more, less toxic
				  substances.