Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 204 - PREVENTION OF SIGNIFICANT DETERIORATION › Subpart C - MAJOR STATIONARY SOURCES IN ATTAINMENT AND UNCLASSIFIABLE AREAS › Section 204.800 - Applicability

Current through Register Vol. 48, No. 28, July 12, 2024
a) The requirements
				of this Part apply to the construction of any new major stationary source (as
				defined in Section 204.510 ) or any project at an existing major stationary
				source in an area designated as attainment or unclassifiable under section
				107(d)(1)(A)(ii) or (iii) of the CAA (
				42 USC
				7407(d)(1)(A)(ii) or
				(iii)).
b) The requirements of Sections 204.810,
				204.820, 204.830, 204.840, 204.850, 204.1100, 204.1110, 204.1120, 204.1130,
				204.1140, and 204.1200 apply to the construction of any new major stationary
				source or the major modification of any existing major stationary source,
				except as this Part otherwise provides.
c) No new major stationary source or major
				modification to which the requirements of Sections 204.810, 204.820, 204.830,
				204.840, 204.850, 204.1100, 204.1110, 204.1120, 204.1130, 204.1140, and
				204.1200 apply shall begin actual construction without a permit that states
				that the major stationary source or major modification will meet those
				requirements. The Agency has authority to issue any such permit.
d) The requirements of the program will be
				applied in accordance with the principles set out in this subsection (d).
1) Except as otherwise provided in subsection
				(f), and consistent with the definition of major modification contained in
				Section 204.490, a project is a major modification for a regulated NSR
				pollutant if it causes two types of emissions increases: a significant
				emissions increase (as defined in Section 204.670 ) and a significant net
				emissions increase (as defined in Sections 204.550 and 204.660 ). 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 (i.e., the first step of the process) will occur
				depends upon the type or types of emissions units involved in the project,
				according to subsections (d)(3) through (d)(5). The procedure for calculating
				(before beginning actual construction) whether a significant net emissions
				increase will occur at the major stationary source (i.e., the second step of
				the process) is contained in the definition in Section 204.550. 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 (as defined in Section 204.600 ) and the baseline
				actual emissions (as defined in Section 204.240(a) and (b) ), for each existing
				emissions unit, equals or exceeds the significant amount for that pollutant (as
				defined in Section 204.660).
4)
				Actual-to-Potential Test for Projects That Only Involve Construction of a New
				Emissions Unit or 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 (as defined in Section 204.560 ) from each new emissions unit
				following completion of the project and the baseline actual emissions (as
				defined in Section 204.240(c) ) of these units before the project equals or
				exceeds the significant amount for that pollutant (as defined in Section
				204.660).
5) Hybrid Test for
				Projects That Involve Multiple Types of Emissions Unit or 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) and (d)(4) as applicable with respect to each
				emissions unit, for each type of emissions unit equals or exceeds the
				significant amount for that pollutant (as defined in Section
				204.660).