New York Codes, Rules and Regulations › Title 6 - DEPARTMENT OF ENVIRONMENTAL CONSERVATION › Chapter III - AIR RESOURCES › Subchapter A - PREVENTION AND CONTROL OF AIR CONTAMINATION AND AIR POLLUTION › Part 231 - NEW SOURCE REVIEW FOR NEW AND MODIFIED FACILITIES › Subpart 231-12 - AMBIENT AIR QUALITY IMPACT ANALYSIS › Section 231-12.2 - Modeling analysis methodologies

Current through Register Vol. 46, No. 28, July 10, 2024
(a) The ambient impact analysis must follow
					 the procedures in the applicable guidelines at   40 CFR part 51, appendix W:
					 Guideline on Air Quality Models of the EPA and a modeling protocol which has
					 been approved by the department. Emissions of PM-10 and PM-2.5 used in a
					 modeling analysis for this Part must include both the filterable and
					 condensable fractions (see definitions of PM-10 and PM-2.5 in Part 200 of this
					 Title).
(b) Where an air quality
					 model specified in appendix W of 40 CFR part 51 is deemed inappropriate, the
					 model may be modified or another model substituted. Such a modification or
					 substitution of a model may be made on a case-by-case basis or, where
					 appropriate, on a generic basis for a specific program. Written approval from
					 the department must be obtained for any modification or substitution. In
					 addition, use of a modified or substituted model shall be subject to public
					 notice and opportunity for public comment, with the determination of a complete
					 permit application, in accordance with Parts 201 and 621 of this
					 Title.
(c) For the purposes of
					 Subparts 231-7 and 231-8 of this Part, the owner or operator of the proposed
					 new or modified facility must demonstrate that allowable emission increases
					 from the proposed facility or modification, in conjunction with all other
					 applicable emissions increases or reductions (including secondary emissions)
					 would not, at a minimum, cause or contribute to air pollution in violation of:
(1) any national ambient air quality standard
					 in any air quality control region;
(2) quantified air quality related values
					 (AQRVs) including visibility for the applicable Federal class I areas;
					 and
(3) any applicable maximum
					 allowable PSD increment increase over the baseline concentration in any area,
					 as defined in the following table:
'Contaminant'
'Maximum allowable increase
Federal Class I
Particulate matter:
PM-10, annual arithmetic mean .........
4
PM-10, 24-hr maximum ..............
8
PM-2.5, annual arithmetic mean ........
1
PM-2.5, 24 hour maximum ............
2
Sulfur dioxide:
Annual arithmetic mean ..............
2
24-hr maximum .....................
5
3-hr maximum ......................
25
Nitrogen dioxide
Annual arithmetic mean ..............
2.5
Class II
Particulate matter:
PM-10, annual arithmetic mean .........
17
PM-10, 24-hr maximum ..............
30
PM-2.5, annual arithmetic mean ........
4
PM-2.5, 24 hour maximum ............
9
Sulfur dioxide:
Annual arithmetic mean
									 .....................
20
24-hr maximum
									 ............................
91
3-hr maximum
									 ............................
512
Nitrogen dioxide
Annual arithmetic mean
									 .....................
25
Class III
Particulate matter:
PM-10, annual arithmetic mean
									 ...............
34
PM-10, 24-hr maximum
									 ....................
60
PM-2.5, annual arithmetic mean
									 ...............
8
PM-2.5, 24 hour maximum
									 ...................
18
Sulfur dioxide:
Annual arithmetic mean
									 .....................
40
24-hr maximum
									 ............................
182
3-hr maximum
									 ............................
700
Nitrogen dioxide
Annual arithmetic mean
									 .....................
50
For any period other than an annual period, the
						applicable maximum allowable increase may be exceeded during one such period
						per year at any one location.