Document ID: chunk:federal_register_of_legislation:F2015L00682:reg:122
Version: federal_register_of_legislation:F2015L00682
Segment Type: reg
Provision Reference: reg 122
Character Range: 154090–156143

122  Calculating the variance of weighted residuals for biomass sample trees and test trees
 (1) The variance of weighted residuals for a set of biomass sample trees or test trees must be calculated in accordance with Equations 32a to 32c.
 (2) The variance of weighted residuals for:
 (a) a set of biomass sample trees that have been assessed as part of the process for developing an allometric function; or
 (b) a set of test trees that have been assessed as part of the process for validating an allometric function;
  is to be calculated using the following formula:
   Equation 32a

  where:
 =  variance of weighted residuals for biomass sample trees ( or for test trees (.
 =  weighted residual in kilograms (kg) for tree , calculated in accordance with Equation 32b.
 =  a biomass sample tree or a test tree.
 =  the number of biomass sample trees () or test trees (), as a whole number.
 =  the number of parameters in the allometric function, as a whole number.

 (3) The weighted residual for a biomass sample tree or a test tree is to be calculated using the following formula:
   Equation 32b

  where:
 =  weighted residual in kilograms (kg) for tree .
 =  a biomass sample tree or a test tree.
=   biomass in kilograms (kg) for tree  measured through destructive sampling.
 =  predicted biomass in kilograms (kg) for tree  calculated from the allometric function.
 =  weighting factor applied to tree , calculated in accordance with Equation 32c.

 (4) The weighting factor applied to a biomass sample tree or test tree is to be calculated using the following formula, and expressed as a dimensionless number:
   Equation 32c

  where:
 =  weighting factor applied to tree .
 =  basal area of tree  in square metres (m2).
 =  biomass sample tree or a test tree .

Part 6—Monitoring and reporting requirements

Note: This determination does not contain any record-keeping requirements for the purposes of paragraph 106(3)(c) of the Act. Record-keeping requirements are set out in Part 17 of the Rule.
Division 1—Monitoring requirements