Non-attainment provisions - stationary sources located in designated attainment

or unclassifiable areas which would cause or contribute to a violation of a national ambient air quality standard. (A) Applicability. This Rule applies only to new major stationary sources or major modifications at existing major stationary sources that will be located in an area designated in 40 CFR 81.355 as attainment, attainment/unclassifiable, unclassifiable/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) Averaging Time (Hours) Air Pollutant Annual 24 8 3 1 Sulfur 1.0 µg/m³ 5.0 µg/m³ 25 µg/m³ Dioxide PM10 1.0 µg/m³ 5.0 µg/m³ PM2.5 0.2 µg/m³ 1.2 µg/m³ Nitrogen 1.0 µg/m³ 7.5 µg/m³ oxide Carbon 500 2000 µ g/m³ Monoxide µg/m³ (B) A proposed major source or major modification subject to Rule 210C(A) shall 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. In the absence of such emission reductions, the DNER shall deny the proposed construction. (C) The requirements of Rule 210C(B) 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 non-attainment pursuant to section 107 of the Clean Air Act.