72Assessing above‑ground biomass of biomass sample trees

72 Assessing above‑ground biomass of biomass sample trees

(1) A project proponent must undertake the processes specified in this section when assessing the above‑ground biomass of a biomass sample tree.

(2) For each biomass sample tree, measures of candidate predictor measures must be collected.

(3) The biomass sample tree must be cut at ground level and separated into biomass components.

(4) After completing the process specified in subsection (3), the total wet weight for each of the separated above‑ground biomass components must be recorded and documented in an allometric report.

(5) Subject to subsection (12), for each biomass sample tree at least 3 representative sub‑samples must be collected from each biomass component and weighed immediately after the weighing for subsection (4).

(6) Subject to subsection (12), the wet‑weight of the sub‑samples must be recorded and documented in an allometric report as specified in section 66.

(7) The following must be oven‑dried to constant weight between 70 and 80 degrees Celsius:

(a) the sub‑samples;

(b) any biomass component being used under subsection (12).

(8) After the oven‑drying, the dry weight of the sub‑samples and any biomass component being used under subsection (12) must be recorded and documented in an allometric report as specified in section 66.

(9) The dry‑wet weight ratio for each of the sub‑samples specified in subsection (6), and any biomass component being used under subsection (12), must be calculated by dividing dry weight by wet weight.

(10) For a component for which sub‑samples have been taken, the average of the dry‑wet weight ratios calculated under subsection (9) must be calculated.

(11) The dry weight of each above‑ground biomass component of the biomass sample tree must be estimated using Equation 31 and applying the average of the dry‑wet weight ratios.

(12) As an alternative to the sub‑samples specified in subsections (5) and (6), the entire biomass component may be used in the processes specified in subsections (6) to (11).