Document ID: chunk:federal_register_of_legislation:F2022L00046:reg:24
Version: federal_register_of_legislation:F2022L00046
Segment Type: reg
Provision Reference: reg 24
Character Range: 63143–65479

24  Simplified outline of this Part

      This determination accounts for carbon abatement from undertaking a tidal restoration project in accordance with this determination, crediting abatement from the avoidance of emissions of greenhouse gases into the atmosphere, as well as abatement from carbon dioxide that is removed from the atmosphere and sequestered in coastal wetland ecosystems.
      A project covered by this determination is a sequestration offsets project, and as such is subject to the obligations under the Act that relate to the permanence period.
      The main equation for the net abatement amount for a tidal restoration project for a reporting period is equation 2. This equation calculates the net abatement amount for a reporting period for each project area, adjusted by the sequestration buffer, subtracting emissions from fuel used during the reporting period (equation 13) and adding any Australian carbon credit units that have been relinquished.
      To calculate the net abatement amount for a project area, the project proponent must first ascertain the carbon stock change for each CEA (equation 4), including any emissions from the loss of soil carbon due to excavation activities (equation 5). The change in carbon stock for each CEA is calculated and aggregated for the project area using equation 3. The avoided emissions of CH4, N2O and CO2 are calculated, comparing the baseline (calculated in equations 7 to 9) and emissions during the reporting period (equations 10 to 11), including emissions of CO2 from ecosystem transition (equation 12), for each CEA. These are aggregated for the project area in equation 5.
      The net abatement amount for each project area is adjusted where necessary by any carryover of negative abatement from the previous reporting period in equation 2. If the resulting number Ar is zero or greater than zero, it represents the net abatement amount for the project area for the reporting period. If Ar is a negative number, the net abatement amount for the project area for the reporting period is instead equal to zero, and the negative number is carried over into the next reporting period and becomes Ar – 1 for that reporting period.
      The change in carbon stocks and the emissions from soil and water must be calculated using the outputs of BlueCAM.