<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.s95712ed8-efae-4169-94d9-2688fa7b256dP0 { margin-top: 0; line-height: 12.0pt; 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; } span.s95712ed8-efae-4169-94d9-2688fa7b256dC0 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s95712ed8-efae-4169-94d9-2688fa7b256dC0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s95712ed8-efae-4169-94d9-2688fa7b256d000002 { color: black; background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s95712ed8-efae-4169-94d9-2688fa7b256dC0-000003 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s95712ed8-efae-4169-94d9-2688fa7b256dC2 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } </style></head><body><div><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">    </span><a href="https://sdlegislature.gov/Rules?Rule=44:75:13:24"><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000000">44:75:13:24</span></a><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001">.  </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001">Filtration</span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001">.</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">A facility shall have a</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> ventilation system using a recirculated central air system equipped with a minimum of two filter beds. Filter bed number one </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> be located upstream of the conditioning equipment and </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> have a minimum efficiency of </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">thirty</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> percent. Each supply air unit </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> have </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">filters that are at least thirty</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> percent effective. Each central ventilation system </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> have </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">filters that are at least eighty</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> percent effective. Each common use area</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> have </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">filters that are eighty percent</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> effective on an air supply system. Each air supply system serving solely an administrative area </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> have </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">filters that are at least thirty</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> percent effective. These filter efficiencies </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> be warranted by the manufacturer and </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> be based on the 20</span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">1</span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">7 edition</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> of the</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> American Society of Heating, Refrigeration, and Air Conditioning Engineers </span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">(ASHRAE) Standard 52.2 </span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">dust spot test method with atmospheric dust. Each filter frame </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> be durable and carefully dimensioned and shall provide an airtight fit with the enclosing duct work. Each joint between filter segments and the enclosing duct work </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> be gasketed or sealed to provide a positive seal against air leakage. A manometer </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">must</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> be installed across each filter bed serving a central air system.</span></p><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256d000002"> </span></p><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">    </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001">Source:</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> 42 SDR 51, effective October 13, 2015</span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">; 50 SDR 62, effective November 27, 2023</span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">.</span></p><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">    </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001">General Authority:</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000003">34-12-13</span></a><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">(1)(3)(4).</span></p><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">    </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001">Law Implemented:</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000003">34-12-13</span></a><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">.</span></p><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256d000002"> </span></p><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">    </span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0-000001">Reference:</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0"> ASHRAE 52.2, 20</span><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">1</span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">7 edition, American Society of Heating, Refrigeration, and Air Conditioning Engineers. Copies may be obtained </span><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">at no cost at </span><a href="https://www.ashrae.org/File Library/Technical Resources/COVID-19/52_2_2017_COVID-19_20200401.pdf"><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC2">https://www.ashrae.org/File%20Library/Technical%20Resources/COVID-19/52_2_2017_COVID-19_20200401.pdf</span></a><span class="s95712ed8-efae-4169-94d9-2688fa7b256dC0">.</span></p><p dir="ltr" class="s95712ed8-efae-4169-94d9-2688fa7b256dP0"><span xml:space="preserve" class="s95712ed8-efae-4169-94d9-2688fa7b256d000002"> </span></p></div></body></html>