If the Commission has evidence that two or more toxic air pollutants being emitted from a facility or combination of facilities act in the same way to affect human health so that their effects may be additive or enhanced and that public exposure is such that human health may be adversely affected, then the Commission shall consider developing acceptable ambient levels for the combination of toxic air pollutants or other appropriate control measures.
15A N.C. Admin. Code 02D .1108
Eff. May 1, 1990;
Readopted Eff. July 1, 2018.
Eff. 5/1/1990.