<html xmlns="http://www.w3.org/1999/xhtml"><head><meta charset="UTF-8" /><title></title><meta name="Generator" content="PowerTools for Open XML" /><style>span { white-space: pre-wrap; } p.s931adf29-6067-4002-bd19-c7eb0af475e1P0 { margin-top: 0; margin-bottom: 0; margin-left: 0; margin-right: 0; text-indent: 0.00in; text-align: justify; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; line-height: 108%; } span.s931adf29-6067-4002-bd19-c7eb0af475e1C0 { background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s931adf29-6067-4002-bd19-c7eb0af475e1C0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s931adf29-6067-4002-bd19-c7eb0af475e1C0-000001 { background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s931adf29-6067-4002-bd19-c7eb0af475e1C0-000002 { background: white; font-family: Times; font-size: 10pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s931adf29-6067-4002-bd19-c7eb0af475e1000003 { background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s931adf29-6067-4002-bd19-c7eb0af475e1C0-000004 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } </style></head><body><div><p dir="ltr" class="s931adf29-6067-4002-bd19-c7eb0af475e1P0"><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">    </span><a href="https://sdlegislature.gov/Rules?Rule=74:36:12:01"><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000000">74:36:12:01</span></a><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000001">.</span><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000002"> </span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000001">Restrictions on visible emissions.</span><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0"> The owner or operator of a source may not discharge into the ambient air from a single unit of emissions an air pollutant of a density equal to or greater than that designated as </span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">twenty</span><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0"> percent opacity, as established by the E</span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">PA</span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">'s Method 9 in 40 C.F.R. Part 60, Appendix A</span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">-4</span><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0"> (July 1, 20</span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">24</span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">).</span></p><p dir="ltr" class="s931adf29-6067-4002-bd19-c7eb0af475e1P0"><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1000003"> </span></p><p dir="ltr" class="s931adf29-6067-4002-bd19-c7eb0af475e1P0"><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">    </span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000001">Source:</span><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0"> SL 1975, ch 16, § 1; transferred from § 34:10:03:01, 7 SDR 4, effective July 27, 1980; transferred from § 44:10:03:01, effective July 1, 1981; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 17 SDR 170, effective May 13, 1991; transferred from § 74:26:03:01, 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</span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">; 52 SDR 27, effective September 17, 2025</span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">.</span></p><p dir="ltr" class="s931adf29-6067-4002-bd19-c7eb0af475e1P0"><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">    </span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000001">General Authority:</span><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-6"><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000004">34A-1-6</span></a><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">.</span></p><p dir="ltr" class="s931adf29-6067-4002-bd19-c7eb0af475e1P0"><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">    </span><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000001">Law Implemented:</span><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-1"><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000004">34A-1-1</span></a><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">, </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-6"><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0-000004">34A-1-6</span></a><span class="s931adf29-6067-4002-bd19-c7eb0af475e1C0">.</span></p><p dir="ltr" class="s931adf29-6067-4002-bd19-c7eb0af475e1P0"><span xml:space="preserve" class="s931adf29-6067-4002-bd19-c7eb0af475e1000003"> </span></p></div></body></html>