Rule 11-2-3.2 - DefinitionsA. "Air Standards." The maximum allowable concentration of any air contaminant existing in the ambient air during a stated period of time, as adopted by the Commission.B. "Director." The Director of the Mississippi Department of Natural Resources.Miss. Code Ann. §§ 49-2-9(1)(b), 49-17-17, 49-2-1, et seq. and 49-17-1, et seq.