Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:10:p8
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 10 (pt 8/15)
Character Range: 693112–695955

specified, and at the frequencies recommended, by the manufacturer of the equipment.
 (6) Fuel flow meter equipment and gas composition monitoring equipment must be recalibrated:
 (a) at the frequency specified by the manufacturer of the equipment; or
 (b) if the manufacturer does not specify a recalibration period for the equipment—annually.
 (7) Estimates of gas flow must be converted from cubic metres to mass by using the formula in subsection 1.21(1).

5.17E  Estimating methane generated but not collected in the representative zone
 (1) The operator must estimate the amount of emissions of methane in the representative zone that is not collected by the collection wells in the zone.
 (2) Estimates must be obtained by using the procedures in sections 5.17F to 5.17H.

5.17F  Walkover survey
 (1) The operator of the landfill must arrange for an independent expert to conduct, at least every 3 months, a walkover survey of the representative zone using a portable gas measurement device in order to:
 (a) determine the near surface gas concentrations in the representative zone and in the immediately surrounding area; and
 (b) identify locations within the representative zone that have:
 (i) low methane emissions; and
 (ii) intermediate methane emissions; and
 (iii) elevated methane emissions; and
 (iv) high methane emissions; and
 (c) scan the representative zone by scanning along multiple transects that are less than 25 metres wide; and
 (d) if the scan detects an area within the representative zone that has high methane emissions—scan along multiple transects 1 metre wide; and
 (e) record the results; and
 (f) map the results against the site plan prepared in accordance with section 5.17.
 (2) The portable gas measurement device must be capable of detecting hydrocarbons at 10 parts per million.
 (3) In this section:
low methane emissions means methane emissions that the results of a scan performed in accordance with this section indicate are equal to or less than 50 parts per million.
intermediate methane emissions means emissions that the results of a scan performed in accordance with this section indicate are greater than 50 parts per million and equal to or less than 100 parts per million.
elevated methane emissions means methane emissions that the results of a scan performed in accordance with this section indicate are greater than 100 parts per million and less than 500 parts per million.
high methane emissions means methane emissions that the results of a scan performed in accordance with this section indicate are equal to or greater than 500 parts per million.

5.17G  Installation of flux boxes in representative zone
 (1) After the walkover survey has been completed, the operator of the landfill must arrange for the installation of flux boxes in the representative zone.
 (2) The number of