Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:22:p19
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 22 (pt 19/29)
Character Range: 280694–283330

of the following methods must be used for estimating emissions of carbon dioxide released:
 (i) method 1 under section 3.27;
 (ii) method 2 under section 3.28;
 (iii) method 3 under section 3.29; and
 (b) method 1 under section 3.27 must be used for estimating emissions of methane released; and
 (c) method 1 under section 3.27 must be used for estimating emissions of nitrous oxide released.
Note: The flaring of coal mine waste gas releases emissions of carbon dioxide, methane and nitrous oxide. The same formula is used to estimate emissions of each of these gases. There is no method 4 for emissions of carbon dioxide, no method 2, 3 or 4 for emissions of methane and no method 2, 3 or 4 for emissions of nitrous oxide.

Venting or other fugitive release before extraction of coal
 (6) Method 4 under Part 1.3 must be used for estimating fugitive emissions of each gas type, being carbon dioxide and methane, that result from venting or other fugitive release of gas from the mine before coal is extracted from the mine.
Note: There is no method 1, 2 or 3 for subsection (6).
 (7) However, for incidental emissions another method may be used that is consistent with the principles in section 1.13.

Subdivision 3.2.3.2—Fugitive emissions from extraction of coal

3.20  Method 1—extraction of coal
  For paragraph 3.19(2)(a), method 1 is:

where:
Ej is the fugitive emissions of methane (j) that result from the extraction of coal from the mine during the year measured in CO2‑e tonnes.
Q is the quantity of run‑of‑mine coal extracted from the mine during the year measured in tonnes.
EFj is the emission factor for methane (j), measured in CO2‑e tonnes per tonne of run‑of‑mine coal extracted from the mine, taken to be the following:
 (a) for a mine in New South Wales—0.061;
 (b) for a mine in Victoria—0.0003;
 (c) for a mine in Queensland—0.031;
 (d) for a mine in Western Australia—0.023;
 (e) for a mine in South Australia—0.0003;
 (f) for a mine in Tasmania—0.019.

3.21  Method 2—extraction of coal
 (1) For paragraph 3.19(2)(b) and subsection 3.19(3), method 2 is:

where:
Ej is the fugitive emissions of gas type (j) that result from the extraction of coal from the mine during the year, measured in CO2‑e tonnes.
γj is the factor for converting a quantity of gas type (j) from cubic metres at standard conditions of pressure and temperature to CO2‑e tonnes, as follows:
 (a) for methane—6.784 × 10‑4 × GWPmethane;
 (b) for carbon dioxide—1.861 × 10‑3.
∑z (Sj,z) is the total of gas type (j) in all gas bearing strata (z) under the extraction area of the mine during the year, measured in cubic metres, where the gas