Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 2 - DEPARTMENT OF ENVIRONMENTAL - QUALITY AIR POLLUTION CONTROL › Article 4 - PERMIT REQUIREMENTS FOR NEW MAJOR SOURCES AND MAJOR MODIFICATIONS TO EXISTING MAJOR SOURCES › Section R18-2-406 - Permit Requirements for Sources Located in Attainment and Unclassifiable Areas

Current through Register Vol. 30, No. 28, July 12, 2024
A. Except as
				provided in subsections (B) through (J) below and
				R18-2-408
				(Innovative control technology), no permit or permit revision under this
				Article shall be issued to a person proposing to construct a new major source
				or make a major modification to a major source that would be constructed in an
				area designated as attainment or unclassifiable for any regulated NSR pollutant
				unless the source or modification meets the following conditions:
1. A new major source shall apply best
				available control technology (BACT) for each regulated NSR pollutant for which
				the potential to emit is significant.
2. A major modification shall apply BACT for
				each regulated NSR pollutant for which the project would result in a
				significant net emissions increase at the source. This requirement applies to
				each proposed emissions unit at which a net emissions increase in the pollutant
				would occur as a result of a physical change or change in the method of
				operation in the unit.
3. For
				phased construction projects, the determination of BACT shall be reviewed and
				modified as appropriate at the latest reasonable time which occurs no later
				than 18 months prior to commencement of construction of each independent phase
				of the project. At such time the owner or operator of the applicable stationary
				source may be required to demonstrate the adequacy of any previous
				determination of BACT for the source.
4. BACT shall be determined on a case-by-case
				basis and may constitute application of production processes or available
				methods, systems, and techniques, including fuel cleaning or treatment, clean
				fuels, or innovative fuel combustion techniques, for control of such pollutant.
				In no event shall such application of BACT result in emissions of any
				pollutant, which would exceed the emissions allowed by any applicable new
				source performance standard or national emission standard for hazardous air
				pollutants or by the applicable implementation plan. If the Director determines
				that technological or economic limitations on the application of measurement
				methodology to a particular emissions unit would make the imposition of an
				emissions standard infeasible, a design, equipment, work practice, operational
				standard, or combination thereof may be prescribed instead to satisfy the
				requirement for the application of BACT. Such standard shall, to the degree
				possible, set forth the emissions reduction achievable by implementation of
				such design, equipment, work practice, or operation and shall provide for
				compliance by means which achieve equivalent results.
5. The person applying for the permit or
				permit revision under this Article performs an air impact analysis and
				monitoring as specified in
				R18-2-407,
				and the analysis demonstrates that allowable emission increases from the
				proposed new major source or major modification, in conjunction with all other
				applicable emission increases or reductions, including secondary
				emissions, would not cause or contribute
				to concentrations of conventional air pollutants in violation of:
a. Any national ambient air quality standard
				in any air quality control region; or
b. Any applicable maximum increase allowed
				under
				R18-2-218
				over the baseline concentration in any area.
6. Air quality models:
a. All estimates of ambient concentrations
				required under this Section shall be based on the applicable air quality
				models, databases, and other requirements specified in 40 CFR 51, Appendix W,
				"Guideline On Air Quality Models," as of June 30, 2017 (and no future
				amendments or additions), which shall be referred to hereinafter as "Guideline"
				and is adopted by reference and is on file with the Department.
b. Where an air quality impact model
				specified in the "Guideline" is not applicable, the model may be modified or
				another model substituted. Such a change shall be subject to notice and
				opportunity for public comment under
				R18-2-330.
				Written approval of the EPA Administrator shall be obtained for any
				modification or substitution.