Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:2:p2
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 2 (pt 2/3)
Character Range: 342788–345453

to section 1.18 and subsections (3) and (4), one of the following methods must be used for estimating fugitive emissions of methane and carbon dioxide (other than emissions that are vented or flared) released during a year from the operation of a facility that is constituted by onshore natural gas production:
 (a) method 1 under section 3.73A;
 (b) method 2 under section 3.73B;
 (c) method 3 under section 3.73C.
Note: There is no method 4 for this Division.
 (2) However, for incidental emissions another method may be used that is consistent with the principles in section 1.13.
 (3) If method 2 is used for a facility, all other available methods 2 must be used in Divisions 3.3.6B, 3.3.6C, 3.3.6E, 3.3.7A and 3.3.7B if those Divisions are applicable to the facility.
 (4) If method 3 is used for a facility, all other available methods 3 must be used in Divisions 3.3.6B, 3.3.6C, 3.3.6E, 3.3.7A and 3.3.7B if those Divisions are applicable to the facility.
3.73A  Method 1—onshore natural gas production, other than emissions that are vented or flared—wellheads
 (1) Method 1 is:

  Eij  = Σk (Qik  ×  EFijk  × Sij / SDij)

where:
Eij is the fugitive emissions (other than emissions that are vented or flared) of gas type (j), being methane or carbon dioxide, from the onshore natural gas production during the year measured in CO2‑e tonnes.
Σk is the total emissions of gas type (j), being methane or carbon dioxide, measured in CO2‑e tonnes and estimated by summing up the emissions released from each equipment type (k) specified in column 2 of an item in the table in subsection (2), if the equipment is used in the onshore natural gas production.
Qik is the total of the quantities of unprocessed natural gas (i) that pass through each equipment type (k) specified in column 2 of the table in subsection (2), during the year measured in tonnes in accordance with Division 2.3.6.
EFijk is the emission factor for gas type (j), being methane or carbon dioxide, measured in CO2‑e tonnes per tonne of unprocessed natural gas (i) that passes through each equipment type (k), if the equipment is used in the onshore natural gas production during the year.
Note: Consistent with subsection 3.41(2), emissions associated with any piece of equipment included in this definition should not be counted under this section if those emissions are also counted as equipment emissions under another section within this Part.
Sij  is the measured share of each gas type (j), being methane or carbon dioxide, in the unprocessed gas (i), by volume, measured in accordance with Division 2.3.3 and the principles in section 1.13.
SDij is the default share of gas type (j) in