<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.sb705163c-fa8c-45d2-bf38-2dd84ed724daP0 { 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.sb705163c-fa8c-45d2-bf38-2dd84ed724daC0 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000001 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.sb705163c-fa8c-45d2-bf38-2dd84ed724da000002 { color: black; background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000003 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } p.sb705163c-fa8c-45d2-bf38-2dd84ed724daP0-000004 { margin-top: 0; line-height: 115.0%; margin-bottom: 10pt; margin-left: 0; margin-right: 0; text-indent: 0.00in; text-align: left; background: white; font-family: Calibri; font-size: 12pt; } span.sb705163c-fa8c-45d2-bf38-2dd84ed724daC2 { 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="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    </span><a href="https://sdlegislature.gov/Rules?Rule=74:36:07:117"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">74</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">:</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">36</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">:</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">07</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">:</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">117</span></a><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000001">.  Existing municipal solid waste landfill active gas collection system monitoring.</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> The owner or operator of an existing municipal solid waste landfill that seeks to comply with an active gas collection system must install a sampling port and a thermometer, other temperature measuring device, or an access port for temperature measurements at each wellhead. The owner or operator </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">must</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">:</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    (</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">1</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">)  </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">Measure the gauge pressure in the gas collection header on a monthly basis;</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    (2)  </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">Monitor nitrogen or oxygen concentration in the landfill gas on a monthly basis as follows:</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">        </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(a)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">The nitrogen level </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">must</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> be determined using 40 C.F.R. Part 60, Appendix A, Method 3C (July 1, 20</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">24</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">), unless an alternative test method is established; and</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">        </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(b)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">Unless an alternative test method is established, the oxygen level </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">must</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> be determined by an oxygen meter using 40 C.F.R. Part 60, Appendix A, Method 3A or 3C (all July 1, 20</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">24</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">) or ASTM D65</span><a href="https://sdlegislature.gov/Statutes?Statute=22-11"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000003">22-11</span></a><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">, if the sample location is prior to combustion, except that the following apply</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">:</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">            </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(i)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">The span </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">is to</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> be set between </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">ten</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> and </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">twelve</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> percent oxygen;</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">            </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(ii)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">A data recorder is not required;</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">            </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(iii)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">Only two calibration gases are required, a zero and </span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">a </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">span;</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">            </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(iv)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">A calibration error check is not required; and</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">            </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(v)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">The allowable sample bias, zero drift, and calibration drift are ±</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">ten</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> percent; and</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">        </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">(c)</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">  </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">A portable gas composition analyzer may be used to monitor the oxygen levels provided the analyzer is calibrated and meets all quality assurance and quality control requirements for 40 C.F.R. Part 60, Appendix A, Method 3A (July 1, 20</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">24</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">) or ASTM D65</span><a href="https://sdlegislature.gov/Statutes?Statute=22-11"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000003">22-11</span></a><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">; and</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    (</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">3</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">)  </span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">Monitor the temperature of the landfill gas on a monthly basis. The temperature measuring device </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">must</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> be calibrated annually using the procedure in 40 C.F.R. Part 60, Appendix A-1, Method 2, Section 10.3 (July 1, 20</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">24</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">).</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000001">Source:</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> 46 SDR 64, effective November 25, 2019</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">; 52 SDR 27, effective September 17, 2025</span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">.</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000001">General Authority:</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-6"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000003">34A-1-6</span></a><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">, </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-18"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000003">34A-1-18</span></a><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">.</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000001">Law Implemented:</span><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-18"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000003">34A-1-18</span></a><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">.</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0-000004"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">    </span><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000001">Reference: ASTM D625</span><a href="https://sdlegislature.gov/Statutes?Statute=22-11"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0-000000">22-11</span></a><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">, 2011 edition, American Society of Testing and Materials. Copies may be obtained at </span><a href="https://www.astm.org/"><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC2">https://www.astm.org</span></a><span class="sb705163c-fa8c-45d2-bf38-2dd84ed724daC0">. Cost $83.</span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p><p dir="ltr" class="sb705163c-fa8c-45d2-bf38-2dd84ed724daP0"><span xml:space="preserve" class="sb705163c-fa8c-45d2-bf38-2dd84ed724da000002"> </span></p></div></body></html>