Standards of performance for secondary lead smelters for which construction, reconstruction, or modification commenced after June 11, 1973, and on or before December 1, 2022. The standards of performance for secondary lead smelters for which construction, reconstruction, or modification commenced after June 11, 1973, and on or before December 1, 2022, are those in 40 C.F.R. Part 60, Subpart L (July 1, 2024).

Source: 33 SDR 217, effective June 13, 2007; 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-1-18 .

Law Implemented: SDCL 34A-1-18 .

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