Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 225 - CONTROL OF EMISSIONS FROM LARGE COMBUSTION SOURCES › Subpart A - GENERAL PROVISIONS › Section 225.130 - Definitions

Current through Register Vol. 48, No. 28, July 12, 2024
The following definitions apply for the purposes of this
				  Part. Unless otherwise defined in this Section or a different meaning for a
				  term is clear from its context, the terms used in this Part have the meanings
				  specified in 35 Ill. Adm. Code 211.
"Agency" means the Illinois Environmental Protection Agency.
				  [415 ILCS 5/3.105 ]
"Averaging demonstration" means, with regard to Subpart B of
				  this Part, a demonstration of compliance that is based on the combined
				  performance of EGUs at two or more sources.
"Base Emission Rate" means, for a group of EGUs subject to
				  emission standards for NOx and
				  SO2 pursuant to Section
				  225.233,
				  the average emission rate of NOx or
				  SO2 from the EGUs, in pounds per million Btu heat input,
				  for calendar years 2003 through 2005 (or, for seasonal
				  NOx, the 2003 through 2005 ozone seasons), as determined
				  from the data collected and quality assured by the USEPA, pursuant to the 40
				  CFR 72 and 96 federal Acid Rain and NOx Budget Trading
				  Programs, for the emissions and heat input of that group of EGUs.
"Board" means the Illinois Pollution Control Board.
				  [415 ILCS 5/3.130 ]
"Boiler" means an enclosed fossil or other fuel-fired
				  combustion device used to produce heat and to transfer heat to recirculating
				  water, steam, or other medium.
"Bottoming-cycle cogeneration unit" means a cogeneration unit
				  in which the energy input to the unit is first used to produce useful thermal
				  energy and at least some of the reject heat from the useful thermal energy
				  application or process is then used for electricity production.
"CAIR authorized account representative" means, for the
				  purpose of general accounts, a responsible natural person who is authorized, in
				  accordance with 40 CFR 96, subparts BB, FF, BBB, FFF, BBBB, and FFFF to
				  transfer and otherwise dispose of CAIR NOx,
				  SO2, and NOx Ozone Season
				  allowances, as applicable, held in the CAIR NOx,
				  SO2, and NOx Ozone Season general
				  account, and for the purpose of a CAIR NOx compliance
				  account, a CAIR SO2 compliance account, or a CAIR
				  NOx Ozone Season compliance account, the CAIR designated
				  representative of the source.
"CAIR designated representative" means, for a CAIR
				  NOx source, a CAIR SO2 source,
				  and a CAIR NOx Ozone Season source and each CAIR
				  NOx unit, CAIR SO2 unit and CAIR
				  NOx Ozone Season unit at the source, the natural person
				  who is authorized by the owners and operators of the source and all such units
				  at the source, in accordance with 40 CFR 96, subparts BB, FF, BBB, FFF, BBBB,
				  and FFFF as applicable, to represent and legally bind each owner and operator
				  in matters pertaining to the CAIR NOx Annual Trading
				  Program, CAIR SO2 Trading Program, and CAIR
				  NOx Ozone Season Trading Program, as applicable. For any
				  unit that is subject to one or more of the following programs: CAIR
				  NOx Annual Trading Program, CAIR
				  SO2 Trading Program, CAIR NOx
				  Ozone Season Trading Program, or the federal Acid Rain Program, the designated
				  representative for the unit must be the same natural person for all programs
				  applicable to the unit.
"Coal" means any solid fuel classified as anthracite,
				  bituminous, subbituminous, or lignite by the American Society for Testing and
				  Materials (ASTM) Standard Specification for Classification of Coals by Rank
				  D388-77, 90, 91, 95, 98a, or 99 (Reapproved 2004).
"Coal-derived fuel" means any fuel (whether in a solid,
				  liquid or gaseous state) produced by the mechanical, thermal, or chemical
				  processing of coal.
"Coal-fired" means:
For purposes of Subpart B, or for purposes of allocating
				  allowances under Sections
				  225.435,
				  225.445,
				  225.535,
				  and
				  225.545,
				  combusting any amount of coal or coal-derived fuel, alone or in combination
				  with any amount of any other fuel, during a specified year;
Except as provided above, combusting any amount of coal or
				  coal-derived fuel, alone or in combination with any amount of any other
				  fuel.
"Cogeneration unit" means, for the purposes of Subparts C, D,
				  and E, a stationary, fossil fuel-fired boiler or a stationary, fossil
				  fuel-fired combustion turbine of which both of the following conditions are
				  true:
It uses equipment to produce electricity and useful thermal
				  energy for industrial, commercial, heating, or cooling purposes through the
				  sequential use of energy; and
It produces either of the following during the 12-month
				  period beginning on the date the unit first produces electricity and during any
				  subsequent calendar year after that in which the unit first produces
				  electricity:
For a topping-cycle cogeneration unit, both of the
				  following:
Useful thermal energy not less than five percent of total
				  energy output; and
Useful power that, when added to one-half of useful thermal
				  energy produced, is not less than 42.5 percent of total energy input, if useful
				  thermal energy produced is 15 percent or more of total energy output, or not
				  less than 45 percent of total energy input if useful thermal energy produced is
				  less than 15 percent of total energy output; or
For a bottoming-cycle cogeneration unit, useful power not
				  less than 45 percent of total energy input.
"Combined cycle system" means a system comprised of one or
				  more combustion turbines, heat recovery steam generators, and steam turbines
				  configured to improve overall efficiency of electricity generation or steam
				  production.
"Combustion turbine" means:
An enclosed device comprising a compressor, a combustor, and
				  a turbine and in which the flue gas resulting from the combustion of fuel in
				  the combustor passes through the turbine, rotating the turbine; and
If the enclosed device described in the above paragraph of
				  this definition is combined cycle, any associated duct burner, heat recovery
				  steam generator and steam turbine.
"Commence commercial operation" means, for the purposes of
				  Subpart B of this Part, with regard to an EGU that serves a generator, to have
				  begun to produce steam, gas, or other heated medium used to generate
				  electricity for sale or use, including test generation. Such date must remain
				  the unit's date of commencement of operation even if the EGU is subsequently
				  modified, reconstructed or repowered. For the purposes of Subparts C, D and E,
				  "commence commercial operation" is as defined in Section
				  225.150.
"Commence construction" means, for the purposes of Section
				  225.460(f),
				  225.470,
				  225.560(f),
				  and
				  225.570,
				  that the owner or owner's designee has obtained all necessary preconstruction
				  approvals (e.g., zoning) or permits and either has:
Begun, or caused to begin, a continuous program of actual
				  on-site construction of the source, to be completed within a reasonable time;
				  or
Entered into binding agreements or contractual obligations,
				  which cannot be cancelled or modified without substantial loss to the owner or
				  operator, to undertake a program of actual construction of the source to be
				  completed within a reasonable time.
For purposes of this definition:
"Construction" shall be determined as any physical change or
				  change in the method of operation, including but not limited to fabrication,
				  erection, installation, demolition, or modification of projects eligible for
				  CASA allowances, as set forth in Sections
				  225.460
				  and 225.560.
"A reasonable time" shall be determined considering but not
				  limited to the following factors: the nature and size of the project, the
				  extent of design engineering, the amount of off-site preparation, whether
				  equipment can be fabricated or can be purchased, when the project begins
				  (considering both the seasonal nature of the construction activity and the
				  existence of other projects competing for construction labor at the same time,
				  the place of the environmental permit in the sequence of corporate and overall
				  governmental approval), and the nature of the project sponsor (e.g., private,
				  public, regulated).
"Commence operation", for purposes of Subparts C, D and E,
				  means:
To have begun any mechanical, chemical, or electronic
				  process, including, for the purpose of a unit, start-up of a unit's combustion
				  chamber, except as provided in
				  40 CFR
				  96.105,
				  96.205, or
				  96.305, as
				  incorporated by reference in Section
				  225.140.
For a unit that undergoes a physical change (other than
				  replacement of the unit by a unit at the same source) after the date the unit
				  commences operation as set forth in the first paragraph of this definition,
				  such date will remain the date of commencement of operation of the unit, which
				  will continue to be treated as the same unit.
For a unit that is replaced by a unit at the same source
				  (e.g., repowered), after the date the unit commences operation as set forth in
				  the first paragraph of this definition, such date will remain the replaced
				  unit's date of commencement of operation, and the replacement unit will be
				  treated as a separate unit with a separate date for commencement of operation
				  as set forth in this definition as appropriate.
"Common stack" means a single flue through which emissions
				  from two or more units are exhausted.
"Compliance account" means:
For the purposes of Subparts D and E, a CAIR
				  NOx Allowance Tracking System account, established by
				  USEPA for a CAIR NOx source or CAIR
				  NOx Ozone Season source pursuant to 40 CFR 96, subparts
				  FF and FFFF in which any CAIR NOx allowance or CAIR
				  NOx Ozone Season allowance allocations for the CAIR
				  NOx units or CAIR NOx Ozone
				  Season units at the source are initially recorded and in which are held any
				  CAIR NOx or CAIR NOx Ozone Season
				  allowances available for use for a control period in order to meet the source's
				  CAIR NOx or CAIR NOx Ozone Season
				  emissions limitations in accordance with Sections
				  225.410
				  and
				  225.510,
				  and
				  40 CFR
				  96.154 and
				  96.354,
				  as incorporated by reference in Section 225.140. CAIR
				  NOx allowances may not be used for compliance with the
				  CAIR NOx Ozone Season Trading Program and CAIR
				  NOx Ozone Season allowances may not be used for
				  compliance with the CAIR NOx Annual Trading Program;
				  or
For the purposes of Subpart C, a "compliance account" means a
				  CAIR SO2 compliance account, established by the USEPA
				  for a CAIR SO2 source pursuant to 40 CFR 96, subpart
				  FFF, in which any SO2 units at the source are initially
				  recorded and in which are held any SO2 allowances
				  available for use for a control period in order to meet the source's CAIR
				  SO2 emissions limitations in accordance with Section
				  225.310
				  and
				  40 CFR
				  96.254, as incorporated by reference in
				  Section 225.140.
"Control period" means:
For the CAIR SO2 and
				  NOx Annual Trading Programs in Subparts C and D, the
				  period beginning January 1 of a calendar year, except as provided in Sections
				  225.310(d)(3)
				   and
				  225.410(d)(3),
				  and ending on December 31 of the same year, inclusive; or
For the CAIR NOx Ozone Season Trading
				  Program in Subpart E, the period beginning May 1 of a calendar year, except as
				  provided in Section
				  225.510(d)(3),
				  and ending on September 30 of the same year, inclusive.
"Electric generating unit" or "EGU" means a fossil fuel-fired
				  stationary boiler, combustion turbine or combined cycle system that serves a
				  generator that has a nameplate capacity greater than 25 MWe and produces
				  electricity for sale.
"Excepted monitoring system" means a sorbent trap monitoring
				  system, as defined in this Section.
"Flue" means a conduit or duct through which gases or other
				  matter is exhausted to the atmosphere.
"Fossil fuel" means natural gas, petroleum, coal, or any form
				  of solid, liquid, or gaseous fuel derived from such material.
"Fossil fuel-fired" means the combusting of any amount of
				  fossil fuel, alone or in combination with any other fuel in any calendar
				  year.
"Generator" means a device that produces electricity.
"Gross electrical output" means the total electrical output
				  from an EGU before making any deductions for energy output used in any way
				  related to the production of energy. For an EGU generating only electricity,
				  the gross electrical output is the output from the turbine/generator
				  set.
"Heat input" means, for the purposes of Subparts C, D, and E,
				  a specified period of time, the product (in mmBtu/hr) of the gross calorific
				  value of the fuel (in Btu/lb) divided by 1,000,000 Btu/mmBtu and multiplied by
				  the fuel feed rate into a combustion device (in lb of fuel/time), as measured,
				  recorded and reported to USEPA by the CAIR designated representative and
				  determined by USEPA in accordance with 40 CFR 96, subpart HH, HHH, or HHHH, if
				  applicable, and excluding the heat derived from preheated combustion air,
				  recirculated flue gases, or exhaust from other sources.
"Higher heating value" or "HHV" means the total heat
				  liberated per mass of fuel burned (Btu/lb), when fuel and dry air at standard
				  conditions undergo complete combustion and all resultant products are brought
				  to their standard states at standard conditions.
"Input mercury" means the mass of mercury that is contained
				  in the coal combusted within an EGU.
"Integrated gasification combined cycle" or "IGCC" means a
				  coal-fired electric utility steam generating unit that burns a synthetic gas
				  derived from coal in a combined-cycle gas turbine. No coal is directly burned
				  in the unit during operation.
"Long-term cold storage" means the complete shutdown of a
				  unit intended to last for an extended period of time (at least two calendar
				  years) where notice for long-term cold storage is provided under
				  40
				  CFR 75.61(a)(7).
"Nameplate capacity" means, starting from the initial
				  installation of a generator, the maximum electrical generating output (in MWe)
				  that the generator is capable of producing on a steady-state basis and during
				  continuous operation (when not restricted by seasonal or other deratings) as of
				  such installation as specified by the manufacturer of the generator or,
				  starting from the completion of any subsequent physical change in the generator
				  resulting in an increase in the maximum electrical generating output (in MWe)
				  that the generator is capable of producing on a steady-state basis and during
				  continuous operation (when not restricted by seasonal or other deratings), such
				  increased maximum amount as of completion as specified by the person conducting
				  the physical change.
"NIST traceable elemental mercury standards" means
				  either:
1) Compressed gas cylinders
				having known concentrations of elemental mercury, which have been prepared
				according to the "EPA Traceability Protocol for Assay and Certification of
				Gaseous Calibration Standards"; or
2) Calibration gases having known
				concentrations of elemental mercury, produced by a generator that fully meets
				the performance requirements of the "EPA Traceability Protocol for
				Qualification and Certification of Elemental Mercury Gas Generators, or an
				interim version of that protocol until such time as a final protocol is
				issued."
"NIST traceable source of oxidized mercury" means a generator
				  that is capable of providing known concentrations of vapor phase mercuric
				  chloride (HgCl2), and that fully meets the performance
				  requirements of the "EPA Traceability Protocol for Qualification and
				  Certification of Oxidized Mercury Gas Generators, or an interim version of that
				  protocol until such time as a final protocol is issued."
"Oil-fired unit" means a unit combusting fuel oil for more
				  than 15.0 percent of the annual heat input in a specified year and not
				  qualifying as coal-fired.
"Output-based emission standard" means, for the purposes of
				  Subpart B of this Part, a maximum allowable rate of emissions of mercury per
				  unit of gross electrical output from an EGU.
"Potential electrical output capacity" means 33 percent of a
				  unit's maximum design heat input, expressed in mmBtu/hr divided by 3.413
				  mmBtu/MWh, and multiplied by 8,760 hr/yr.
"Project sponsor" means a person or an entity, including but
				  not limited to the owner or operator of an EGU or a not-for-profit group, that
				  provides the majority of funding for an energy efficiency and conservation,
				  renewable energy, or clean technology project as listed in Sections
				  225.460
				  and 225.560, unless another person or entity is designated by a written
				  agreement as the project sponsor for the purpose of applying for
				  NOx allowances or NOx Ozone
				  Season allowances from the CASA.
"Rated-energy efficiency" means the percentage of thermal
				  energy input that is recovered as useable energy in the form of gross
				  electrical output, useful thermal energy, or both that is used for heating,
				  cooling, industrial processes, or other beneficial uses as follows:
For electric generators, rated-energy efficiency is
				  calculated as one kilowatt hour (3,413 Btu) of electricity divided by the
				  unit's design heat rate using the higher heating value of the fuel, and
				  expressed as a percentage.
For combined heat and power projects, rated-energy efficiency
				  is calculated using the following formula:
REE
=
((GO + UTE)/HI) a 100
Where:
REE
=
Rated-energy efficiency, expressed as
							 percentage.
GO
=
Gross electrical output of the system expressed in
							 Btu/hr.
UTE
=
Useful thermal output from the system that is used
							 for heating, cooling, industrial processes or other beneficial uses, expressed
							 in Btu/hr.
HI
=
Heat input, based upon the higher heating value of
							 fuel, in Btu/hr.
"Repowered" means, for the purposes of an EGU, replacement of
				  a coal-fired boiler with one of the following coal-fired technologies at the
				  same source as the coal-fired boiler:
Atmospheric or pressurized fluidized bed combustion;
Integrated gasification combined cycle;
Magnetohydrodynamics;
Direct and indirect coal-fired turbines;
Integrated gasification fuel cells; or
As determined by the USEPA in consultation with the United
				  States Department of Energy, a derivative of one or more of the technologies
				  under this definition and any other coal-fired technology capable of
				  controlling multiple combustion emissions simultaneously with improved boiler
				  or generation efficiency and with significantly greater waste reduction
				  relative to the performance of technology in widespread commercial use as of
				  January 1, 2005.
"Rolling 12-month basis" means, for the purposes of Subpart B
				  of this Part, a determination made on a monthly basis from the relevant data
				  for a particular calendar month and the preceding 11 calendar months (total of
				  12 months of data), with two exceptions. For determinations involving one EGU,
				  calendar months in which the EGU does not operate (zero EGU operating hours)
				  must not be included in the determination, and must be replaced by a preceding
				  month or months in which the EGU does operate, so that the determination is
				  still based on 12 months of data. For determinations involving two or more
				  EGUs, calendar months in which none of the EGUs covered by the determination
				  operates (zero EGU operating hours) must not be included in the determination,
				  and must be replaced by preceding months in which at least one of the EGUs
				  covered by the determination does operate, so that the determination is still
				  based on 12 months of data.
"Sorbent Trap Monitoring System" means the equipment required
				  by Appendix B of this Part for the continuous monitoring of Hg emissions, using
				  paired sorbent traps containing iodated charcoal (IC) or other suitable
				  reagents. This excepted monitoring system consists of a probe, the paired
				  sorbent traps, an umbilical line, moisture removal components, an air tight
				  sample pump, a gas flow meter, and an automated data acquisition and handling
				  system. The monitoring system samples the stack gas at a rate proportional to
				  the stack gas volumetric flowrate. The sampling is a batch process. Using the
				  sample volume measured by the gas flow meter and the results of the analyses of
				  the sorbent traps, the average mercury concentration in the stack gas for the
				  sampling period is determined in units of micrograms per dry standard cubic
				  meter (µg/dscm). Mercury mass emissions for each hour in the sampling
				  period are calculated using the average Hg concentration for that period, in
				  conjunction with contemporaneous hourly measurements of the stack gas flow
				  rate, corrected for the stack moisture content.
"Total energy output" means, with respect to a cogeneration
				  unit, the sum of useful power and useful thermal energy produced by the
				  cogeneration unit.
"Useful thermal energy" means, for the purpose of a
				  cogeneration unit, the thermal energy that is made available to an industrial
				  or commercial process, excluding any heat contained in condensate return or
				  makeup water:
Used in a heating application (e.g., space heating or
				  domestic hot water heating); or
Used in a space cooling application (e.g., thermal energy
				  used by an absorption chiller).