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 74:36:07:114 - Existing municipal solid waste landfill compliance with surface methane operational standards

Current through Register Vol. 51, page 10, July 15, 2024
The owner or operator of an existing municipal solid waste landfill
	 that meets the requirements of subdivision 74:36:07:111(4) shall comply with
	 the following procedures for demonstrating compliance with the surface methane
	 operational standards:
(1) After
  installation and startup of the gas collection system, the owner or operator
  shall monitor surface concentrations of methane along the entire perimeter of
  the collection area and along a pattern that traverses the landfill at no more
  than 30 meter intervals or a site-specific established spacing for each
  collection area on a quarterly basis 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 outside the boundary
  of the landfill at a distance of at least 30 meters from the perimeter
  wells;
(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
  within 5 to 10 centimeters of the ground. Monitoring shall be performed during
  typical meteorological conditions;
(4) Any reading of 500 parts per million or
  more above background at any location shall be recorded as a monitored
  exceedance. As long as the following actions are taken, the exceedance is not a
  violation of the operational requirements of subdivision 74:36:07:111(4):
(a) The location of each monitored exceedance
  shall be marked and the location and concentration recorded. For location, the
  owner or operator shall determine the latitude and longitude coordinates using
  an instrument with an accuracy of at least four meters. The coordinates shall
  be in decimal degrees with at least five decimal places;
(b) Cover maintenance or adjustments to the
  vacuum of the adjacent wells to increase the gas collection in the vicinity of
  each exceedance shall be made and the location shall be re-monitored within 10
  calendar days of detecting the exceedance;
(c) If the re-monitoring of the location
  shows a second exceedance, additional corrective action shall be taken and the
  location shall be monitored again within 10 days of the second exceedance. If
  the re-monitoring shows a third exceedance for the same location, the action
  specified in subdivision (e) of this section shall be taken, and no further
  monitoring of that location is required until the action specified in
  subdivision (e) of this section has been taken;
(d) Any location that initially showed an
  exceedance but has a methane concentration less than 500 parts per million
  methane above background at the 10-day re-monitoring specified in subdivision
  (b) or (c) of this section shall be re-monitored one month from the initial
  exceedance. If the 1-month re-monitoring shows a concentration less than 500
  parts per million above background, no further monitoring of that location is
  required until the next quarterly monitoring period. If the 1-month
  re-monitoring shows an exceedance, the actions specified in subdivision (c) or
  (e) of this section shall be taken; and
(e) For any location where monitored methane
  concentration equals or exceeds 500 parts per million above background three
  times within a quarterly period, a new well or other collection device must be
  installed within 120 calendar days of the initial exceedance. An alternative
  remedy to the exceedance, such as upgrading the blower, header pipes or control
  device, and a corresponding timeline for installation may be submitted to the
  Secretary for approval;