Carbon Credits (Carbon Farming Initiative—Reforestation and Afforestation 2.0) Methodology Determination 2015
79Assessing carbon stock in litter
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79 Assessing carbon stock in litter
(1) If a project proponent chooses to assess the carbon stock in litter, the project proponent must undertake the assessment process specified in this section.
Assessment process
(2) For each plot to be assessed, 4 litter samples must be collected in accordance with the following requirements:
(a) a sampling frame must be placed randomly in 4 separate locations within the boundaries of the plot being assessed;
(b) the sampling frame must be either square or rectangular;
(c) the locations of the sampling frame must not overlap;
(d) no litter must be collected from outside the boundaries of the sampling frame;
(e) dirt and non‑litter contaminants are to be minimised within the sample.
(3) The 4 samples specified in subsection (2) must be combined into a single bulked sample for the plot.
(4) The wet weight of the bulked sample specified in subsection (3) must be recorded immediately after performing processes specified in subsections (2) and (3) and documented in a sampling plan.
(5) For all plots assessed on each day, or at least the first 3 plots assessed each day, a sub‑sample from the bulked sample for each plot must be collected and the wet weight of each sub‑sample is to be recorded and documented in a sampling plan.
(6) The sub‑samples specified in subsection (5) must be oven‑dried to constant weight between 70 and 80 degrees Celsius.
(7) The weight of the sub‑samples that have been dried in accordance with subsection (6) must be recorded and documented in a sampling plan.
(8) The dry‑to‑wet weight ratio of the sub‑samples collected each day must be calculated by dividing the dry weight for each sub‑sample by its wet weight.
(9) When the dry‑to‑wet weight ratio of each sub‑sample has been calculated in accordance with subsection (8), the average of the ratios must be calculated.
(10) The average dry‑to‑wet weight ratio calculated in accordance with subsection (9) must be used to estimate the dry weight of the bulked samples collected on that day.
(11) The carbon stock contained in litter located in the TSP or PSP must be calculated using Equation 17.