1. (a) This part shall apply to any new major stationary source or major modification that would locate in any area designated as attainment or unclassifiable for any national ambient air quality standard pursuant to Section 107 of the Clean Air Act, when it would cause or contribute to a violation of any national ambient air quality standard.
2. (b) A major source or major modification will be considered to cause or contribute to a violation of a national ambient air quality standard when such source or modification would, at a minimum, exceed the following significance levels at any locality that does not or would not meet the applicable national standard:

   Pollutant	Averaging Time (hours)
   Annual	24	8	3	1
   SO2	1.0 g/m3	5 g/m3		25 g/m3
   PM10	1.0 g/m3	5 g/m3
   NO2	1.0 g/m3
   CO			0.5g/m3		2 mg/m3

3. (c)

   1. (1) A proposed major source or major modification subject to this section may reduce the impact of its emissions upon air quality by obtaining sufficient emission reductions to, at a minimum, compensate for its adverse ambient impact where the major source or major modification would otherwise cause or contribute to a violation of any national ambient air quality standard.
   2. (2) In the absence of such emission reductions, the Director of the Division of Environmental Quality shall deny the proposed construction.
4. (d) The requirements of this section shall not apply to a major stationary source or major modification with respect to a particular pollutant if the owner or operator demonstrates that, as to that pollutant, the source or modification is located in an area designated as nonattainment pursuant to Section 107 of the Clean Air Act.

Codification Notes: The Clean Air Act, Pub. L. No. 101-549, is codified at 42 U.S.C. § 7401 et seq.