Air pollutants of particulate matter, sulfur dioxide, carbon monoxide, ozone, nitrogen dioxide, and lead listed in 40 C.F.R. Part 50 (July 1, 2024) must be measured by the reference method or methods stated in 40 C.F.R. Part 50, Appendix A to Appendix U, inclusive (July 1, 2024), or an equivalent method designated in accordance with 40 C.F.R. Part 53 (July 1, 2024).

Source: SL 1975, ch 16, § 1; 2 SDR 40, effective December 7, 1975; transferred from § 34:10:02:11, 7 SDR 4, effective July 27, 1980; transferred from § 44:10:02:09, effective July 1, 1981; 13 SDR 129, 13 SDR 141, effective July 1, 1987; transferred from § 74:26:02:09, 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.