Major stationary source
Major stationary source means:
(a) Any stationary source of air pollutants which emits, or has the potential to emit, 100 tons per year or more of a regulated NSR pollutant (as defined in paragraph II.A.31 of this Ruling), except that lower emissions thresholds shall apply in areas subject to subpart 2, subpart 3, or subpart 4 of part D, title I of the Act, according to paragraphs II.A.4(i)(a)(1) through (8) of this Ruling.
(1) 50 tons per year of volatile organic compounds in any serious ozone nonattainment area.
(2) 50 tons per year of volatile organic compounds in an area within an ozone transport region, except for any severe or extreme ozone nonattainment area.
(3) 25 tons per year of volatile organic compounds in any severe ozone nonattainment area.
(4) 10 tons per year of volatile organic compounds in any extreme ozone nonattainment area.
(5) 50 tons per year of carbon monoxide in any serious nonattainment area for carbon monoxide, where stationary sources contribute significantly to carbon monoxide levels in the area (as determined under rules issued by the Administrator)
(6) 70 tons per year of PM–10 in any serious nonattainment area for PM–10;
(7) 70 tons per year of PM2.5 in any serious nonattainment area for PM2.5.
(8) 70 tons per year of any individual PM2.5 precursor (as defined in paragraph II.A.31 of this Ruling) in any Serious nonattainment area for PM2.5.
(b) For the purposes of applying the requirements of paragraph IV. H of this Ruling to stationary sources of nitrogen oxides located in an ozone nonattainment area or in an ozone transport region, any stationary source which emits, or has the potential to emit, 100 tons per year or more of nitrogen oxides emissions, except that the emission thresholds in paragraphs II.A.4(i)(b)(1) through (6) of this Ruling apply in areas subject to subpart 2 of part D, title I of the Act.
(1) 100 tons per year or more of nitrogen oxides in any ozone nonattainment area classified as marginal or moderate.
(2) 100 tons per year or more of nitrogen oxides in any ozone nonattainment area classified as a transitional, submarginal, or incomplete or no data area, when such area is located in an ozone transport region.
(3) 100 tons per year or more of nitrogen oxides in any area designated under section 107(d) of the Act as attainment or unclassifiable for ozone that is located in an ozone transport region.
(4) 50 tons per year or more of nitrogen oxides in any serious nonattainment area for ozone.
(5) 25 tons per year or more of nitrogen oxides in any severe nonattainment area for ozone.
(6) 10 tons per year or more of nitrogen oxides in any extreme nonattainment area for ozone; or
(c) Any physical change that would occur at a stationary source not qualifying under paragraph II.A.4(i)(a) or (b) of this Ruling as a major stationary source, if the change would constitute a major stationary source by itself.
(ii) A major stationary source that is major for volatile organic compounds or nitrogen oxides is major for ozone.