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 74:36:07:101 - Tier 2 nonmethane organic compound emission rate for existing municipal solid waste landfills

Current through Register Vol. 51, page 10, July 15, 2024
The owner or operator of an existing municipal solid waste landfill
	 shall install at least two sample probes per hectare, evenly distributed over
	 the landfill surface that has retained waste for at least two years. If the
	 landfill is larger than 25 hectares in area, only 50 samples are required. The
	 probes should be evenly distributed across the sample area. The sample probes
	 should be located to avoid known areas of nondegradable solid waste. The owner
	 or operator shall collect and analyze one sample of landfill gas from each
	 probe to determine the nonmethane organic compound concentration using 40
	 C.F.R. Part 60, Appendix A, Method 25 or 25C (July 1, 2018). Taking composite
	 samples from different probes into a single cylinder is allowed; however, equal
	 sample volumes shall be taken from each probe. For each composite, the sampling
	 rate, collection times, beginning and ending cylinder vacuums, or alternative
	 volume measurements shall be recorded to verify that composite volumes are
	 equal. Composite sample volumes should not be less than one liter unless
	 evidence can be provided to substantiate the accuracy of smaller volumes.
	 Terminate compositing before the cylinder approaches ambient pressure where
	 measurement accuracy diminishes. If more than the required number of samples is
	 taken, all samples shall be used in the analysis. The landfill owner or
	 operator shall divide the nonmethane organic compound concentration from Method
	 25 or 25C by six to convert from nonmethane organic compound concentration as
	 carbon to nonmethane organic compound concentration as hexane. If the landfill
	 has an active or passive gas removal system in place, Method 25 or 25C samples
	 may be collected from these systems instead of surface probes provided the
	 removal system can be shown to provide sampling as representative as the two
	 sampling probe per hectare requirement. For active collection systems, samples
	 may be collected from the common header pipe. The sample location on the common
	 header pipe shall be before any gas moving, condensate removal, or treatment
	 system equipment. For active collection systems, a minimum of three samples
	 shall be collected from the header pipe. The owner or operator shall determine
	 the site-specific nonmethane organic compound concentration using the following
	 sampling procedure:
(1) Within 60 days
  after the date of determining the nonmethane organic compound concentration and
  corresponding nonmethane organic compound emission rate, the owner or operator
  shall submit the results;
(2) The
  owner or operator shall recalculate the nonmethane organic compound mass
  emission rate using the appropriate equation in §
									74:36:07:99 using the average
  site-specific nonmethane organic compound concentration from the collected
  samples instead of the default value;
(3) If the resulting nonmethane organic
  compound mass emission rate is less than 34 megagrams per year, the owner or
  operator shall submit an estimate of nonmethane organic compound emissions in
  the annual nonmethane organic compound emission rate report. The site-specific
  nonmethane organic compound concentration shall be retested every five years;
  and
(4) If the nonmethane organic
  compound mass emission rate as calculated using the Tier 2 site-specific
  nonmethane organic compound concentration is equal to or greater than 34
  megagrams per year, the owner or operator shall:
(a) Submit a gas collection and control
  system design plan within one year and install and operate a gas collection and
  control system within 30 months according to §§
										74:36:07:106 and §
										74:36:07:109;
(b) Determine a site-specific methane
  generation rate constant and recalculate the nonmethane organic compound
  emission rate using the site-specific methane generation rate using the Tier 3
  procedures specified in §
										74:36:07:102; or
(c) Conduct a surface emission monitoring
  demonstration using the Tier 4 procedures specified in §
										74:36:07:103.