Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:4:p4
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 4 (pt 4/9)
Character Range: 631656–634535

estimated in accordance with subsection 5.4(4) and measured in CO2‑e tonnes.

       Qcap is the quantity of methane in landfill gas captured for combustion from the landfill during the year, measured in cubic metres in accordance with Division 2.3.6.
Qflared is the quantity of methane in landfill gas flared from the landfill during the year and measured in cubic metres in accordance with Division 2.3.6.
Qtr is the quantity of methane in landfill gas transferred out of the landfill during the year and measured in cubic metres in accordance with Division 2.3.6.
 (4) For subsections (2) and (3), CH4gen must be calculated using the estimates mentioned in section 5.4A and the equations mentioned in sections 5.4B, 5.4C and 5.4D.

5.4A  Estimates for calculating CH4gen
  For subsection 5.4(4), the estimates for calculating CH4gen are the following:
 (a) the tonnage of total solid waste disposed of in the landfill during the year estimated in accordance with section 5.5;
 (b) the composition of the solid waste disposed of in the landfill during the year estimated in accordance with section 5.9;
 (c) the degradable organic carbon content of the solid waste disposed of in the landfill by waste type estimated in accordance with section 5.12;
 (d) the opening stock of degradable organic carbon in the solid waste at the landfill at the start of the first reporting period for the landfill estimated in accordance with section 5.13;
 (e) methane generation constants (k values) for the solid waste at the landfill estimated in accordance with section 5.14;
 (f) the fraction of degradable organic carbon dissimilated (DOCF) estimated in accordance with section 5.14A;
 (g) the methane correction factor for aerobic decomposition in the first year estimated in accordance with section 5.14B;
 (h) the fraction by volume of methane generated in landfill gas estimated in accordance with section 5.14C;
 (i) the number of months that have ended before methane generation at the landfill commences estimated in accordance with section 5.14D.

5.4B  Equation—change in quantity of particular opening stock at landfill for calculating CH4gen
 (1) For subsection 5.4(4), this section applies if the result of the first equation in subsection 5.4(3)is, for the reporting year for which the result is calculated, (the current reporting year), greater than the collection efficiency limit for the landfill calculated in accordance with section 5.15C.
 (2) The change in the quantity of the opening stock of decomposable degradable organic carbon (∆Cost) that is:
 (a) located in the landfill during the reporting year; and
 (b) measured in tonnes; and
 (c) lost through decomposition;
must be calculated using the equation mentioned in subsection (3).
 (3) For subsection (2), the equation is:

where:
t is the reporting year.
CH4* is the estimated quantity of methane in landfill