The provisions of this division (relating to Houston-Galveston-Brazoria Ozone Nonattainment Area Major Sources) apply to the following units located at any major stationary source of nitrogen oxides located within the Houston-Galveston-Brazoria ozone nonattainment area:(1) industrial, commercial, or institutional boilers and process heaters;(2) stationary gas turbines;(3) stationary internal combustion engines;(4) fluid catalytic cracking units (including carbon monoxide (CO) boilers, CO furnaces, and catalyst regenerator vents);(5) boilers and industrial furnaces that were regulated as existing facilities in 40 Code of Federal Regulations Part 266, Subpart H (as was in effect on June 9, 1993);(6) duct burners used in turbine exhaust ducts;(7) pulping liquor recovery furnaces;(8) lime kilns;(9) lightweight aggregate kilns;(10) heat treating furnaces and reheat furnaces;(11) magnesium chloride fluidized bed dryers; and(12) incinerators.