<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.s1ab33630-2ecd-45c2-927c-6f145535bfadP0 { 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.s1ab33630-2ecd-45c2-927c-6f145535bfadC0 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfad000002 { color: black; background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000003 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000004 { color: black; background: white; font-family: Times; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000005 { color: black; background: white; font-family: Times; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000006 { color: black; background: white; font-family: Times; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s1ab33630-2ecd-45c2-927c-6f145535bfadC2 { color: #0000FF; background: white; font-family: Times; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } </style></head><body><div><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">    </span><a href="https://sdlegislature.gov/Rules?Rule=44:73:12:28"><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000000">44:73:12:28</span></a><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001">.  </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001">Filtration</span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001">.</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">A facility shall have a</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> ventilation system using a recirculated central air system equipped with a minimum of two filter beds. Filter bed number one </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> be located upstream of the conditioning equipment and </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> have a minimum efficiency of </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">thirty</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> percent. Each supply air unit </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> have </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">filters that are at least thirty-percent</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> effective. Each central ventilation system </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> have </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">filters that are at least eighty-percent effective</span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">. Each common use area</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> have </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">filters that are eighty-percent effective</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> on an air supply system. Each air supply system serving solely an administrative area </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> have </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">filters that are at least thirty-percent effective</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">. These filter efficiencies </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> be warranted by the manufacturer and </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> be based on the </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">2017</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> edition</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> of the</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> American Society of Heating, Refrigerati</span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">ng</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">, and Air Conditioning Engineers </span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">Standard 52.2 </span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">dust spot test method with atmospheric dust. Each filter frame </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> be durable and </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> provide an airtight fit with the enclosing duct work. Each joint between filter segments and the enclosing duct work </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> be gasketed or sealed to provide a positive seal against air leakage. A manometer </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">must</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> be installed across each filter bed serving a central air system.</span></p><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfad000002"> </span></p><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">    </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001">Source:</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> SL 1975, ch 16, § 1; 6 SDR 93, effective July 1, 1980; 14 SDR 81, effective December 10, 1987; 22 SDR 70, effective November 19, 1995; 24 SDR 90, effective January 4, 1998; 38 SDR 115, effective January 9, 2012; transferred from § </span><a href="https://sdlegislature.gov/Rules?Rule=44:04:13:27"><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000003">44:04:13:27</span></a><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">, 42 SDR 51, effective October 13, 2015</span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">; 51 SDR 53, effective November 11, 2024</span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">.</span></p><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">    </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001">General Authority:</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000003">34-12-13</span></a><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">.</span></p><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">    </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001">Law Implemented:</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000003">34-12-13</span></a><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">.</span></p><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfad000002"> </span></p><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0">    </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000001">Reference:</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0"> </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000004">ASHRAE 52.2</span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000005">,</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000005"> 2017</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000005"> edition, American Society of Heating,</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000006"> </span><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000006">Refrigerating</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000005"> and Air Conditioning Engineers. Copies may be obtained</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000005"> at no cost at</span><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000006"> </span><a href="https://www.ashrae.org/File Library/Technical Resources/COVID-19/52_2_2017_COVID-19_20200401.pdf7"><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC2">https://www.ashrae.org/File%20Library/Technical%20Resources/COVID-19/52_2_2017_COVID-19_20200401.pdf7</span></a><span class="s1ab33630-2ecd-45c2-927c-6f145535bfadC0-000005">.</span></p><p dir="ltr" class="s1ab33630-2ecd-45c2-927c-6f145535bfadP0"><span xml:space="preserve" class="s1ab33630-2ecd-45c2-927c-6f145535bfad000002"> </span></p></div></body></html>