Document ID: chunk:federal_register_of_legislation:F2021L01696:clause:2_13:p1
Version: federal_register_of_legislation:F2021L01696
Segment Type: clause
Provision Reference: sch 2 cl 13 (pt 1/2)
Character Range: 182096–184634

13  Determining Equivalent Soil Mass (ESM) from the sampled soil masses derived during the baseline sampling round
 (1) The equivalent soil mass (the ESM), in tonnes of oven dry whole soil per hectare, for a CEA must be worked out in accordance with this section and the Supplement based on any samples collected from the CEA for the purposes of paragraph 5(2)(a) of this Schedule for the first estimation event.
Note 1: The Supplement may include provision for sub-layer analysis (analysing carbon stocks at more discrete intervals than 0-30 cm, 0-x cm) which allows for the mass of each sample to be adjusted by removing sub-layers from carbon stock estimates to keep masses between sample rounds comparable. Restrictions on removal of sub-layers will be subject to requirements such as to continue to account for the soil mass to the depth of any disturbance as per paragraph 8(2)(a) of this Schedule and the Supplement.
Note 2: The samples for which the ESM is worked out can include calibration samples and model-validation samples.
 (2) Rank from smallest to largest for the CEA the mass of oven dry whole soil in the 0-30 cm or 0-x cm layer for the sample () collected for the first estimation event, worked out in accordance with any requirements in the Supplement, in tonnes of oven dry whole soil per hectare.
 (3) With the ranked samples from subsection (2), assign a sequential rank k from 1 for the smallest through to N for the largest, where N is the total number of samples collected for a CEA for the first estimation event.
 (4) A percentile P must be worked out for each sample k using the following equation:
  equation 73

  where:
 is the value of the sequential rank assigned to a sample from the first estimation event under subsection (3).
 is the total number of samples collected from the CEA for the first estimation event.
 (5) If one of the percentiles worked out in equation 73 for a sample is equal to PSupp—the ESM for the CEA is the mass of the sample ()  given by subsection (3) for the relevant rank of k, where PSupp is the percentile value to which ESM is set, specified in the Supplement.
 (6) If subsection (5) does not apply—the ESM for a CEA is given by the following equation:
  equation 74

  where:
MLB is the mass of oven dry whole soil associated with the sample having the value of P given by equation 73 closest to and lower than PSupp, in tonnes of oven dry whole soil per hectare.
MUB is the mass of oven dry whole soil associated with the sample, having the value of P given by equation