(a) A new incineration unit is an incineration unit that meets any of the criteria specified in paragraph (a)(1) through (a)(2) of this section.
(1) A CISWI unit that commenced construction after June 4, 2010.
(2) A CISWI unit that commenced reconstruction or modification after August 7, 2013.
(b) This subpart does not affect your CISWI unit if you make physical or operational changes to your incineration unit primarily to comply with subpart DDDD of this part (Emission Guidelines and Compliance Times for Commercial and Industrial Solid Waste Incineration Units). Such changes do not qualify as reconstruction or modification under this subpart. [76 FR 15450, Mar. 21, 2011, as amended at 78 FR 9178, Feb. 7, 2013]