15A NCAC 02D .2401 SECTION .2400 CLEAN AIR INTERSTATE RULES PURPOSE AND APPLICABILITY (a) Purpose. The purpose of this Section is to implement the federal Clean Air Interstate Rule and thereby reduce the interstate transportation of fine particulate matter and ozone. (b) Applicability. This Section applies to the following, which are CAIR NOx units, CAIR SO2 units, and CAIR NOx Ozone Season units to the extent they are subject to the NOx annual trading program, SO2 trading program, and NOx ozone season trading program, respectively, in this Section: (1) (2) (3) any stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine serving at any time, since the later of November 15, 1990 or the start-up of a unit's combustion chamber, a generator with nameplate capacity of more than 25 MWe producing electricity for sale, provided that if a stationary boiler or stationary combustion turbine that does not meet these requirements begins to combust fossil fuel or to serve a generator with nameplate capacity of more than 25 MWe producing electricity for sale, the unit shall become subject to this Section under this Subparagraph on the first date on which the unit both combusts fossil fuel and serves such generator; notwithstanding Subparagraph (b)(1) of this Rule, a unit that meets the requirements in 40 CFR 96.104(b)(1)(i), (b)(2)(i), or (b)(2)(ii), 96.204(b)(1)(i), (b)(2)(i), or (b)(2)(ii), 96.304(b)(1)(i), (b)(2)(i), or (b)(2)(ii), shall not be subject to this Section under this Subparagraph and shall become subject to this Section under this Subparagraph as provided in 40 CFR 96.104(b)(1)(ii) or (b)(2)(iii), 96.204(b)(1)(ii) or (b)(2)(iii), or 96.304(b)(1)(ii) or (b)(2)(iii); solely for the purposes of the NOx ozone season trading program, fossil fuel-fired stationary boilers, combustion turbines, or combined cycle systems having a maximum design heat input greater than 250 million Btu per hour except stationary combustion turbines constructed before January 1, 1979, that have a federally enforceable permit that restricts: (A) (B) (C) its potential emissions of nitrogen oxides to no more than 25 tons between May 1 and September 30; it to burning only natural gas or oil; and its hours of operation as described in 40 CFR 96.4(b)(1)(ii) and (iii); or (4) solely for the purposes of the NOx ozone season trading program, fossil-fuel fired stationary boilers, combustion turbines, or combined cycle systems serving a generator with a nameplate capacity greater than 25 MW electrical and selling any amount of electricity. (c) Retired unit exemption. Any unit that is permanently retired and is not an opt-in unit under Rule .2411 of this Section shall be exempted from the annual trading program for: (1) (2) (3) nitrogen oxides if it complies with the provisions of 40 CFR 96.105, sulfur dioxide if it complies with the provisions of 40 CFR 96.205, or ozone season nitrogen oxides if it complies with the provisions of 40 CFR 96.305. (d) Effect on other authorities. No provision of this Section, any application submitted or any permit issued pursuant to Rule .2406 of this Section, or any exemption under 40 CFR 96.105, 96.205, or 96.305 shall be construed as exempting any source or facility covered under this Section or the owner or operator or designated representative of any source or facility covered under this Section from complying with any other requirements of this Subchapter or Subchapter 15A NCAC 02Q or the Clean Air Act. The Environmental Management Commission may specify through rulemaking a specific emission limit lower than that established under this Rule for a specific source if compliance with the lower emission limit is required to attain or maintain the ambient air quality standard for ozone or fine particulate (PM2.5) or any other ambient air quality standard in Section 15A NCAC 02D .0400. History Note: Authority G.S. 143-215.3(a); 143-215.107(a)(5), (10); Eff. July 1, 2006; Amended Eff. May 1, 2008.