Ohio Administrative Code › Title 3745 - Ohio Environmental Protection Agency › Chapter 3745-31 - Permit-to-Install New Sources and Permit-to-Install and Operate Program › Section 3745-31-23 - Nonattainment provisions - stationary sources locating in designated clean or unclassifiable areas which would cause or contribute to a violation of a national ambient air quality standard

Current through all regulations passed and filed
			 through July 1, 2024
[Comment: For dates and availability of non-regulatory
				government publications, publications of recognized organizations and
				associations, federal rules, and federal statutory provisions referenced in
				this rule, see paragraph (AA) of rule
				3745-31-01 of the Administrative
				Code entitled, "referenced materials."]
(A) Applicability.
This rule applies only to major stationary sources or major
				modification that will be located in an area designated in
				40 CFR
				81.336 as attainment or unclassifiable if the
				emissions from the major stationary source or major modification would exceed
				the following significance levels at any locality that does not meet the
				national ambient air quality standard:
Averaging Time (Hours)
Air Pollutant
Annual
24
8
3
1
Sulfur dioxide
1.0
						  µg/m3
5.0
						  µg/m3
--------
25µg/m3
--------
PM10
1.0
						  µg/m3
5.0
						  µg/m3
--------
--------
--------
PM
						  2.5
0.3
						  µg/m3
1.2
						  µg/m3
--------
--------
--------
Nitrogen dioxide
1.0
						  µg/m3
--------
--------
--------
10µg/m3
Carbon monoxide
--------
--------
500µg/m3
--------
2mg/m3
(B)
			 Requirements and exemptions.
Major stationary sources or major modifications to which this
				section applies shall meet the LAER under paragraph (A)(1) of rule
				3745-31-22 of the Administrative
				Code, the compliance certification under paragraph (A)(2) of rule
				3745-31-22 of the Administrative
				Code, and the net air quality benefit under paragraph (A)(4) of rule
				3745-31-22 of the Administrative
				Code. However, such major stationary sources or major modifications are exempt
				from the offset requirements under paragraph (A)(3) of rule
				3745-31-22 of the Administrative
				Code.
(C) Review of
			 specified major stationary sources for air quality impact.
(1) For sulfur dioxide, particulate matter,
			 PM10, PM 2.5 and carbon monoxide, the
			 determination of whether a major stationary source or major modification will
			 cause or contribute to a violation of a national ambient air quality standard
			 is be made on a case-by-case basis using the major stationary source's
			 allowable emissions in an atmospheric dispersion model.
(2) For major stationary sources of nitrogen
			 oxides, the initial determination of whether a major stationary source would
			 cause or contribute to a violation of the national ambient air quality standard
			 for nitrogen dioxide will be made using an atmospheric model assuming all the
			 nitric oxide emitted is oxidized to nitrogen dioxide by the time the plume
			 reaches ground level. The initial concentration estimates may be adjusted if
			 adequate data are available to account for the expected oxidation
			 rate.
(3) For ozone, major
			 stationary sources of VOCs, locating outside a designated ozone nonattainment
			 area, will be presumed to have no significant impact on the designated
			 nonattainment area. If ambient monitoring indicates that the area of major
			 stationary source location is in fact nonattainment, then the major stationary
			 source may be permitted under the provisions of the Ohio state implementation
			 plan adopted pursuant to Section 110(A)(2)(d) of the Clean Air Act until the
			 area is designated nonattainment and the Ohio state implementation plan
			 revision is approved. If no Ohio state implementation plan pursuant to Section
			 110(A)(2)(d) of the Clean Air Act has been adopted and approved, then this rule
			 shall apply.
(4) The determination
			 as to whether a major stationary source would cause or contribute to a
			 violation of a national ambient air quality standard should be made as of the
			 new stationary source's start-up date. Therefore, if a designated nonattaiment
			 area is projected to be an attainment area as part of an approved Ohio state
			 implementation plan control strategy by the new stationary source start-up
			 date, offsets will not be required if the new stationary source would not cause
			 a new violation.