South Dakota Administrative Rules
Title 74 - Department of Environment And Natural Resources
Article 74:36 - Air pollution control program
Chapter 74:36:07 - New source performance standards
Section 74:36:07:103 - Tier 4 nonmethane organic compound emission rate for existing municipal solid waste landfills
Current through Register Vol. 50, page 114, March 25, 2024
Tier 4 is allowed only if the owner or operator can demonstrate that nonmethane organic compound emissions are greater than or equal to 34 megagrams per year but less than 50 megagrams per year using Tier 1 or Tier 2. If both Tier 1 and Tier 2 indicate nonmethane organic compound emissions are 50 megagrams per year or greater, Tier 4 cannot be used and the owner or operator must meet the criteria in subdivision (8) of this section. If Tier 4 is being used, the owner or operator shall demonstrate that surface methane emissions are below 500 parts per million. Surface emission monitoring shall be conducted on a quarterly basis using the following procedures:
(1) The owner or operator shall measure surface concentrations of methane along the entire perimeter of the landfill and along a pattern that traverses the landfill at no more than 30-meter intervals using an organic vapor analyzer, flame ionization detector, or other portable monitor meeting the specifications provided in § 74:36:07:115;
(2) The background concentration shall be determined by moving the probe inlet upwind and downwind at least 30 meters from the waste mass boundary of the landfill;
(3) Surface emission monitoring shall be performed in accordance with 40 C.F.R. Part 60, Appendix A, Method 21, section 8.3.1 (July 1, 2018), except the probe inlet shall be placed no more than 5 centimeters above the landfill surface. The constant measurement of distance above the surface should be based on a mechanical device:
(4) Each owner or operator seeking to comply with the Tier 4 provisions in subdivision (6) of this section shall maintain records of surface emission monitoring and submit a Tier 4 surface emissions report;
(5) If there is any measured concentration of methane of 500 parts per million or greater from the surface of the landfill, the owner or operator shall submit a gas collection and control system design plan within one year of the first measured concentration of methane of 500 parts per million or greater from the surface of the landfill and install and operate a gas collection and control system according to §§ 74:36:07:106 and § 74:36:07:109 within 30 months of the most recent nonmethane organic compound emission rate report in which the nonmethane organic compound emission rate equals or exceeds 34 megagrams per year based on Tier 2;
(6) If after four consecutive quarterly monitoring periods at a landfill, other than a closed landfill, there is no measured concentration of methane of 500 parts per million or greater from the surface of the landfill, the owner or operator shall continue quarterly surface emission monitoring;
(7) If after four consecutive quarterly monitoring periods at a closed landfill there is no measured concentration of methane of 500 parts per million or greater from the surface of the landfill, the owner or operator shall conduct annual surface emission monitoring; and
(8) If a landfill has installed and operates a collection and control system that is not required, then the collection and control system shall meet the following criteria:
General Authority: SDCL 34A-1-6.
Law Implemented: SDCL 34A-1-18.
