Pennsylvania Code › Title 25 - ENVIRONMENTAL PROTECTION › Part I - Department of Environmental Protection › Subpart C - Protection of Natural Resources › Article III - Air Resources › Chapter 129 - STANDARDS FOR SOURCES › STATIONARY SOURCES OF NO[x] AND VOCs › Section 129.94 - NO[x] RACT emission averaging general requirements

Current through Register Vol. 54, No. 28, July 13, 2024
(a) The owners and operators of major
						NOx emitting facilities may submit a written proposal to
						the Department as part of an application for operating permits to average
						emissions to meet the RACT requirements of §
												129.91 (relating to control of
						major sources of NOx and VOCs). Emission averaging which
						complies with applicable EPA requirements and is approved as an SIP revision,
						and which meets the criteria in subsection (b) and is approved by the
						Department shall satisfy the requirements of § 129.91. The Department will
						approve, deny or modify each averaging proposal.
(b) The Department will not approve an
						emission averaging proposal unless the proposal demonstrates compliance with
						the following requirements to the Department's satisfaction:
(1) The proposal shall demonstrate that the
						aggregate emissions achieved through the RACT averaging proposal are less than
						the sum of emissions that would be achieved by complying with the RACT
						requirement on a source specific basis.
(2) The averaging proposal shall include a
						tons per year emission cap and an emission rate such as pounds/million Btus for
						each source in the averaging proposal that provide for verification and
						enforcement of the averaging proposal.
(3) Emission reductions attributed to the
						shutdown or curtailment of operation of a source may not be included in an
						averaging proposal.
(4) The
						proposal shall demonstrate that the ambient air quality impact resulting from
						implementation of the averaging proposal is less than or equivalent to the
						impact from each source complying with the RACT requirements in §
													129.91 and §§
													129.92 and
						129.93 (relating to RACT proposal
						requirements; and presumptive RACT emission limitations) individually. The
						demonstration shall consider the area of emissions impact and the periods of
						time of emissions impact except as follows:
(i) For emission averaging involving sources
						located within the same nonattainment area, the demonstration shall only
						consider the periods of time of emissions impact.
(ii) For emission averaging involving sources
						not located within the same nonattainment area which are located less than 200
						kilometers from another source involved in the averaging proposal, the
						demonstration shall only consider the periods of time of emissions
						impact.
(5) The proposal
						shall provide that each source involved in the averaging proposal shall be
						required to use continuous emission monitors and record emissions following the
						requirements of Chapter 139 (relating to sampling and testing). The
						participating sources are required to establish telemetry links between the
						sources and to provide real time emission data to all sources affected by the
						averaging proposal. For an averaging proposal involving sources at a single
						facility, the Department may approve alternate requirements provided the
						proposal demonstrates that the alternate methodologies are credible, workable,
						replicable and fully enforceable and adequately quantify emissions from all
						sources participating in the averaging program.