Unless otherwise specified, interpretation of all ambient air quality standards contained in this Article shall be in accordance with 40 CFR 50, incorporated by reference in Appendix 2 of this Chapter.

Historical Note

Adopted effective May 14, 1979 (Supp. 79-1). Former Section R9-3-216 repealed, new Section R9-3-216 adopted effective August 29, 1980 (Supp. 80-4). Former Section R9-3-216 renumbered without change as Section R18-2-216 (Supp. 87-3). Amended effective September 26, 1990 (Supp. 90-3). Amended by final rulemaking at 15 A.A.R. 281, effective March 7, 2009 (Supp. 09-1).