<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.se6961bd7-b45f-431d-8ed1-af677dccce37P0 { 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.se6961bd7-b45f-431d-8ed1-af677dccce37C0 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.se6961bd7-b45f-431d-8ed1-af677dccce37C0-000001 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.se6961bd7-b45f-431d-8ed1-af677dccce37000002 { color: black; background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.se6961bd7-b45f-431d-8ed1-af677dccce37C0-000003 { 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="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><a href="https://sdlegislature.gov/Rules?Rule=74:36:07:136"><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000">74</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000">:</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000">36</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000">:</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000">07</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000">:</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000000">136</span></a><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000001">.  Recordkeeping for existing municipal solid waste landfill -- Surface methane.</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0"> The owner or operator seeking to demonstrate </span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">that </span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">site-specific surface methane emissions are below </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">five hundred</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0"> parts per million</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">,</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0"> by conducting surface emission monitoring under the Tier 4 procedures</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">,</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0"> must keep for at least five years up-to-date, readily accessible records of all surface emissions monitoring and information related to monitoring instrument calibrations conducted according to 40 C.F.R., Part 60, Appendix A, Method 21, sections 8 and 10 (July 1, 20</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">24</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">), including all of the following items:</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(1)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">The following calibration records:</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">        </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(a)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Date of calibration and initials of </span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">the </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">operator performing the calibration;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">        </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(b)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Calibration gas cylinder identification, certification date, and certified concentration;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">        </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(c)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Any instrument scale used;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">        </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(d)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">A description of any corrective action taken if the meter readout could not be adjusted to correspond to the calibration gas value; and</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">        </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(e)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">If an owner or operator makes their own calibration gas, a description of the procedure used;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(2)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Digital photographs of the instrument setup. The photographs must be time and date-stamped and taken at the first sampling location prior to sampling and at the last sampling location after sampling at the end of each sampling day, for the duration of the Tier 4 monitoring demonstration;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(3)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Timestamp of each surface scan reading. The timestamp should be detailed to the nearest second and based on when the sample collection begins. A log for the length of time each sample was taken using a stopwatch. The time each sample is take means the time the probe was held over the area;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(4)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Location of each surface scan reading. The owner or operator must determine the coordinates using an instrument with an accuracy of at least four meters. Coordinates must be in decimal degrees with at least five decimal places;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(5)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Monitored methane concentration, in parts per million, of each reading;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(6)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Background methane concentration, in parts per million, after each instrument calibration test;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(7)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Adjusted methane concentration using </span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">the </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">most recent calibration, in parts per million;</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(8)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">For readings taken at each surface penetration, the unique identification location label matching the label specified in § </span><a href="https://sdlegislature.gov/Rules?Rule=74:36:07:133"><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000003">74:36:07:133</span></a><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">; and</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">(9)</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">  </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">Records of the operating hours of the gas collection system for each destruction device.</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000001">Source:</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0"> 46 SDR 64, effective November 25, 2019</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">; 52 SDR 27, effective September 17, 2025</span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">.</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000001">General Authority:</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-6"><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000003">34A-1-6</span></a><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">, </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-18"><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000003">34A-1-18</span></a><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">.</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">    </span><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000001">Law Implemented:</span><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34A-1-18"><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0-000003">34A-1-18</span></a><span class="se6961bd7-b45f-431d-8ed1-af677dccce37C0">.</span></p><p dir="ltr" class="se6961bd7-b45f-431d-8ed1-af677dccce37P0"><span xml:space="preserve" class="se6961bd7-b45f-431d-8ed1-af677dccce37000002"> </span></p></div></body></html>