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 R18-2-402 - General

Current through Register Vol. 30, No. 28, July 12, 2024
A. The
				preconstruction review requirements of this Article shall apply to the
				construction of any new major source or any project at an existing major
				source.
B. The requirements of
				R18-2-403
				through
				R18-2-410
				apply to the construction of any new major source or any major modification of
				any existing major source, except as this Article otherwise provides.
C. No person shall begin actual construction
				of a new major source or a major modification subject to the requirements of
				R18-2-403
				through
				R18-2-410
				without first obtaining a proposed final permit from the Director, pursuant to
				R18-2-307(A)(2), stating that the major source or major modification shall meet
				those requirements.
D. The
				requirements of this Article apply to projects at major sources in accordance
				with the following principles.
1. Except as
				otherwise provided in subsection (E), a project is a major modification for a
				regulated NSR pollutant if it causes both a significant emissions increase and
				a significant net emissions increase. The project is not a major modification
				if it does not cause a significant emissions increase. If the project causes a
				significant emissions increase, then the project is a major modification only
				if it also results in a significant net emissions increase.
2. The procedure for calculating before
				beginning actual construction whether a significant emissions increase will
				occur depends upon the types of emissions units being modified as set forth in
				subsections (D)(3) through (6). The procedure for calculating before beginning
				actual construction whether a significant net emissions increase will occur at
				the major source is set forth in the definition of net emissions increase in
				R18-2-101. Regardless of any such preconstruction projections, a major
				modification results if the project causes a significant emissions increase and
				a significant net emissions increase.
3. Actual-to-projected-actual applicability
				test for projects that only involve existing emissions units. A significant
				emissions increase of a regulated NSR pollutant is projected to occur if the
				sum of the difference between the projected actual emissions and the baseline
				actual emissions, for each existing emissions unit, equals or exceeds the
				significant amount for that pollutant.
4. Actual-to-potential applicability test for
				projects that only involve new emissions units. A significant emissions
				increase of a regulated NSR pollutant is projected to occur if the sum of the
				difference between the potential to emit from each new emissions unit following
				completion of the project and the baseline actual emissions of these units
				before the project equals or exceeds the significant amount for that
				pollutant.
5. [Reserved.]
6. Hybrid applicability test for projects
				that involve both new emissions units and existing emissions units. A
				significant emissions increase of a regulated NSR pollutant is projected to
				occur if the sum of the emissions increases for each emissions unit, using the
				method specified in subsections (D)(3) through (D)(4), as applicable with
				respect to each emissions unit, equals or exceeds the significant amount for
				that pollutant.