Document ID: chunk:federal_register_of_legislation:F2021L01696:clause:2_10:p1
Version: federal_register_of_legislation:F2021L01696
Segment Type: clause
Provision Reference: sch 2 cl 10 (pt 1/3)
Character Range: 175670–178213

10  Working out the change in soil organic carbon stock for a CEA
 (1)  If, pursuant to section 15 of this determination, the change in soil organic carbon stock for a reporting period for a CEA with a specified probability of exceedance is worked out using Schedule 2, then that change must be worked out using equation 116.
 (2)  In working out the change in soil organic carbon stock for a reporting period for a CEA with a specified probability of exceedance:
 (a)  for the 0-30 cm layer of the CEA, Division 4 of this Schedule must be applied to the first estimation event in the CEA and the last estimation event (that is not the first estimation event) in the reporting period, with Division 5 of this Schedule used to calculate the difference between the two estimation events; and
 (b)  for the 0-30 cm layers and 0-x cm layers of the CEA, Division 4 of this Schedule must be applied to the first estimation event in the CEA and the last estimation event (that is not the first estimation event) in the reporting period, with Division 5 of this Schedule used to calculate the difference between the two estimation events:
 (i)  if the project proponent elects to account for soil organic carbon changes for the 0-x cm layer of the estimation for the CEA; or
 (ii)  if land management activities disturb the soil deeper than 20 centimetres (where x must equal or exceed the depth of disturbance plus 10 centimetres); or
 (iii)  if an estimate under equation 116 were to be applied to the 0-x cm  layer, and the corresponding change in soil organic carbon stock in the 30-x cm layer in the CEA calculated is negative as determined by subsection (3); and
Note: This subsection allows participants to elect to estimate and account for changes in the 30-x cm layer – unless they are required to account for it under the circumstances listed in paragraph (2)(b). Accounting for the 30-x cm layer can make it more difficult to detect changes in the 0-30 cm layer due to potentially slower rates of change in the deeper layer and the effect of baseline soil organic carbon stocks on the standard error terms in equation 116. The purpose of this subsection is to allow the 30-x cm layer to be monitored for soil organic carbon increases but accounting to occur just for the 0-30 cm layer, unless negative changes occur in the 30-x cm layer which then requires the 30-x cm layer to be included in accounting to prevent over crediting.
           (c)    if Divisions 4 and 5 of this Schedule are applied to the 0-x cm layer of the estimation for