Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:4:p6
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 4 (pt 6/9)
Character Range: 636802–639531

as the quantity of opening stock for the current reporting year.

5.4D  Equation—quantity of methane generated by landfill for calculating CH4gen
  For subsection 5.4(4), the quantity of methane generated by the landfill must be calculated using the following equation:

where:
CH4gen is the quantity of methane generated by the landfill as calculated under this section and measured in CO2‑e tonnes.
F is the fraction of methane generated in landfill gas estimated in accordance with section 5.14C.
1.336 is the factor to convert a mass of carbon to a mass of methane.
∆Cost is the change in the quantity of the opening stock of decomposable degradable organic carbon derived from the sum of all waste mix types located in the landfill during the reporting year, measured in tonnes, lost through decomposition, and equals:

∆Cost = ∑i Cosit  (1−e−ki)

where:
Cosit is the quantity of decomposable degradable organic carbon accumulated in the landfill at the beginning of the reporting year from all waste mix types mentioned in subsection 5.11(1), measured in tonnes and equals:

Cosit = Ccsit‑1

where:
Ccsit‑1 is the closing stock of decomposable degradable organic carbon accumulated in the landfill in the year immediately preceding the reporting year from all waste mix types mentioned in subsection 5.11(1), measured in tonnes and equals:

Ccsit = Cosit – ∆Cosit + Cait – ∆Cait

and:
∆Cat is the change in the quantity of decomposable degradable organic carbon derived from the sum of all waste mix types deposited at the landfill during the reporting year, measured in tonnes, lost through decomposition, and equals:

∆Cat = ∑i Cait  [1−e –ki  (13 – M) /12]

where:
Cait is the quantity of degradable organic carbon in all waste mix types mentioned in subsection 5.11(1) deposited at the landfill during the reporting year , measured in tonnes and is equal to:

Cait = (Qit  DOCi  DOCfi  MCF)

where:
Qit is the quantity of all waste mix types mentioned in subsection 5.11(1) deposited at the landfill during the reporting year, measured in tonnes.
DOCi is the fraction of the degradable organic carbon content of the solid waste for all waste mix types mentioned in subsection 5.11(1) and deposited at the landfill.
DOCfi is the fraction of decomposable degradable organic carbon for all waste mix types mentioned in subsection 5.11(1).
MCF is the methane correction factor for aerobic decomposition for the facility during the reporting year.
and where:
ki is the methane generation constant for all waste mix types mentioned in subsection 5.11(1).
t is the reporting year.
M is the number of months before commencement of methane generation at the landfill plus 7.
Σi is the sum for all waste mix types mentioned