Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:3
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 3
Character Range: 459470–462120

3     Non‑routine activities—production related non‑routine emissions—compressor blowdowns  Section 5.7.1 and 5.7.2

Subdivision 3.3.9A.10—Natural gas production (emissions that are flared)

3.85T  Available methods
 (1) For estimating emissions released from gas flared from natural gas production:
 (a) one of the following methods must be used for estimating emissions of carbon dioxide released:
 (i) method 1 under section 3.86;
 (ii) method 2 under section 3.87;
 (iia) method 2B under section 3.87B;
 (iii) method 3 under section 3.88; and
 (b) if estimating emissions of methane released—one of the following methods must be used:
 (i) method 1 under section 3.86;
 (ii) method 2A under section 3.87A; and
 (iii) method 2B under section 3.87B.
 (c) if estimating emissions of nitrous oxide released—one of the following methods must be used:
 (i) method 1 under section 3.86;
 (ii) method 2A under section 3.87A.
Note: The flaring of gas from natural gas production and processing releases emissions of carbon dioxide, methane and nitrous oxide. The reference to gas type (j) in method 1 in section 3.85 is a reference to these gases. The same formula is used to estimate emissions of each of these gases. There is no method 4 for emissions of carbon dioxide and no method 2, 3 or 4 for emissions of nitrous oxide or methane.
 (1A) If method 2B under section 3.87B has been used to estimate emissions of either methane or carbon dioxide released, no other method in this section may be used to estimate emissions of methane or carbon dioxide.
 (2) However, for incidental emissions another method may be used that is consistent with the principles in section 1.13.

3.86  Method 1—gas flared from natural gas production
 (1) Method 1 is:

where:
Eij is the emissions of gas type (j) measured in CO2‑e tonnes that result from a fuel type (i) flared in the natural gas production during the year.
Qi is the quantity of fuel type (i) measured in tonnes of gas flared during the year.
Note: This quantity includes all of the fuel type, not just hydrocarbons within the fuel type.
EFij is the emission factor for gas type (j) measured in CO2‑e tonnes of emissions per tonne of gas flared in the natural gas production during the year as determined under subsection (2).
 (2) For EFij mentioned in subsection (1), columns 3, 4 and 5 of an item in the following table specify the emission factor for fuel type (i) specified in column 2 of that item.

Item  fuel type (i)          Emission factor of gas type (j) (tonnes CO2‑e/tonnes fuel flared)
      CO2                    CH4                                                                N2O