<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.s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0 { 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.s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0 { background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000001 { background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s9aef9b11-161c-48fd-ae2d-e07eaa6a9fee000002 { background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000003 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } p.s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0-000004 { margin-top: 0; margin-bottom: 0; margin-left: 0; margin-right: 0; text-indent: 0.00in; text-align: left; background: white; font-family: Times; font-size: 10pt; line-height: 108%; } span.s9aef9b11-161c-48fd-ae2d-e07eaa6a9fee000005 { background: white; font-size: 10pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } </style></head><body><div><p dir="ltr" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0"><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">    </span><a href="https://sdlegislature.gov/Rules?Rule=74:36:02:03"><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000000">74:36:02:03</span></a><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000001">.  Methods of sampling and analysis.</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0"> Air pollutants of particulate matter, sulfur dioxide, carbon monoxide, ozone, nitrogen dioxide, and lead listed in 40 C.F.R. Part 50 (July 1, 20</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">24</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">) </span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">must</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0"> be measured by the reference method or methods stated in 40 C.F.R. Part 50, Appendix A t</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">o</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0"> Appendix </span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">U</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">, </span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">inclusive </span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">(July 1, 20</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">24</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">)</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">,</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0"> or an equivalent method designated in accordance with 40 C.F.R. Part 53 (July 1, 20</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">24</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">).</span></p><p dir="ltr" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0"><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9fee000002"> </span></p><p dir="ltr" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0"><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">    </span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000001">Source:</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0"> 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</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">; 52 SDR 27, effective September 17, 2025</span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">.</span></p><p dir="ltr" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0"><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">    </span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000001">General Authority:</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-6"><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000003">34A-1-6</span></a><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">, </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-15"><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000003">34A-1-15</span></a><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">.</span></p><p dir="ltr" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0"><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">    </span><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000001">Law Implemented:</span><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-1"><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000003">34A-1-1</span></a><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">, </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-15"><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0-000003">34A-1-15</span></a><span class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeC0">.</span></p><p dir="ltr" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0"><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9fee000002"> </span></p><p dir="ltr" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9feeP0-000004"><span xml:space="preserve" class="s9aef9b11-161c-48fd-ae2d-e07eaa6a9fee000005"> </span></p></div></body></html>