<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.saba6f4f0-6e87-488d-9318-b0706b0f3262P0 { 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.saba6f4f0-6e87-488d-9318-b0706b0f3262C0 { background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000001 { background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.saba6f4f0-6e87-488d-9318-b0706b0f3262000002 { background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000003 { 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="saba6f4f0-6e87-488d-9318-b0706b0f3262P0"><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">    </span><a href="https://sdlegislature.gov/Rules?Rule=74:36:18:10"><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000000">74:36:18:10</span></a><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000001">.  Visible emission limit for construction and continuous operation activities.</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0"> The owner or operator of a state facility or </span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">a </span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">state contractor may not discharge into the ambient air from a fugitive source an air pollutant of a density equal to or greater than that designated as </span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">twenty</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0"> percent opacity</span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">, as determined by the EPA's Method 9 in 40 C.F.R. Part 60, Appendix A-4 (July 1, 2024)</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0"> for a series of two minute averages with a minimum of a total of six minutes of readings. The Environmental Protection Agency's Method 9 in 40 C.F.R. Part 60, Appendix A (July 1, 20</span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">24</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">) </span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">must</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0"> be used to determine the opacity.</span></p><p dir="ltr" class="saba6f4f0-6e87-488d-9318-b0706b0f3262P0"><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262000002"> </span></p><p dir="ltr" class="saba6f4f0-6e87-488d-9318-b0706b0f3262P0"><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">    </span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000001">Source:</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0"> 28 SDR 178, effective July 1, 2002; 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="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">; 52 SDR 27, effective September 17, 2025</span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">.</span></p><p dir="ltr" class="saba6f4f0-6e87-488d-9318-b0706b0f3262P0"><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">    </span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000001">General Authority:</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-6"><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000003">34A-1-6</span></a><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">.</span></p><p dir="ltr" class="saba6f4f0-6e87-488d-9318-b0706b0f3262P0"><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">    </span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000001">Law Implemented:</span><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-1"><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000003">34A-1-</span><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000003">1</span></a><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">, </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-6"><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0-000003">34A-1-6</span></a><span class="saba6f4f0-6e87-488d-9318-b0706b0f3262C0">.</span></p><p dir="ltr" class="saba6f4f0-6e87-488d-9318-b0706b0f3262P0"><span xml:space="preserve" class="saba6f4f0-6e87-488d-9318-b0706b0f3262000002"> </span></p></div></body></html>