(a) The requirements in this division apply to affected sources at the Tokai Big Spring Carbon Black Plant, which is located at 1211 North Midway Road in Big Spring, Texas, in the Howard County sulfur dioxide nonattainment area. Affected sources will remain subject to this division regardless of ownership, operational control, or other documentation changes.(b) Affected existing sources are designated by the source name and emission point number (EPN) used in the site's New Source Review (NSR) permit as issued on the specified date. Applicable control devices to be authorized and constructed are similarly designated by the EPN that the company used to designate the future unit in the attainment demonstration modeling, with an appropriate name also used in the rules. The specific affected sources are as follows:(1) Incinerator + HRSG (EPN 13A) in NSR Permit 6580 dated November 23, 2021;(2) Dryer Stack Units Nos. 1 & 2 (EPN 7A) in NSR Permit 6580 dated November 23, 2021;(3) Dryer Stack Units No. 3 (EPN 12A) in NSR Permit 6580 dated November 23, 2021;(4) Flare 1 (EPN Flare-1) in NSR Permit 6580 dated November 23, 2021;(5) Flare 2 (EPN Flare-2) in NSR Permit 6580 dated November 23, 2021;(6) Flare 3 (EPN Flare-3) in NSR Permit 6580 dated November 23, 2021; and(7) Flare 4 (EPN FLARE 4) if authorized and constructed to replace the existing three flares for the carbon black reactors (EPN Flare-1, EPN Flare-2, and EPN Flare-3).