The ambient air quality standards listed in 40 C.F.R. §§ 50.1 through 50.3, (July 1, 2024); 40 C.F.R. § 50.6 (July 1, 2024); 40 C.F.R. § 50.8 (July 1, 2024); 40 C.F.R. § 50.11 (July 1, 2024); 40 C.F.R. § 50.13 (July 1, 2024); 40 C.F.R. § 50.14 (July 1, 2024); 40 C.F.R. §§ 50.16 and 50.17 (July 1, 2024); 40 C.F.R. §§ 50.19 and 50.20 (July 1, 2024); and 89 Fed. Reg. 105,785,105,785 (December 27, 2024) (to be codified at 40 C.F.R. § 50.21), define the types and levels of air pollution above which the ambient air would limit the attainment of the goals specified in § 74:36:02:01. These standards apply to the entire state and no person may cause these standards to be exceeded. The standards include normal background levels of air pollutants.

Source: SL 1975, ch 16, § 1; 2 SDR 40, effective December 7, 1975; transferred from § 34:10:02:02, 7 SDR 4, effective July 27, 1980; transferred from § 44:10:02:02, effective July 1, 1981; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 17 SDR 170, effective May 13, 1991; transferred from § 74:26:02:02, 19 SDR 157, effective April 22, 1993; 21 SDR 119, effective January 5, 1995; 25 SDR 123, effective April 4, 1999; 26 SDR 168, effective June 27, 2000; 31 SDR 101, effective January 2, 2005; 32 SDR 209, effective June 13, 2006; 36 SDR 207, effective June 28, 2010; 39 SDR 219, effective June 25, 2013; 42 SDR 52, effective October 13, 2015; 44 SDR 43, effective September 13, 2017; 46 SDR 64, effective November 25, 2019 ; 52 SDR 27, effective September 17, 2025 .

General Authority: SDCL 34A-1-6 , 34A-1-15 .

Law Implemented: SDCL 34A-1-1 , 34A-1-15 .

Prior versions effective: 2019-11-25, 2017-09-13, 2015-10-13, 2013-06-25.