Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:8:p11
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 8 (pt 11/11)
Character Range: 783070–785407

so that the range for an emissions estimate encompasses the actual amount of the emissions with 95% confidence.

8.3  Required method
 (1) Uncertainty of estimates of scope 1 emissions must be assessed in accordance with Part 8.3 or with the uncertainty protocol, as appropriate.
 (2) For corporations that have sources of scope 1 emissions that are estimated using a variety of method 1, 2, 3 or 4, the uncertainty associated with the emissions must be aggregated in accordance with section 8 of the uncertainty protocol.

Part 8.3—How to assess uncertainty when using method 1

8.4  Purpose of Part
  This Part sets out how to assess uncertainty of scope 1 emissions if method 1 is used to estimate scope 1 emissions for a source.

8.5  General rules about uncertainty estimates for emissions estimates using method 1
  The total uncertainty of scope 1 emissions estimates for a source in relation to a registered corporation is to be worked out by aggregating, as applicable, the uncertainty of the emissions factor, the energy content factor and the activity data for the source in accordance with the formula in section 8.11.
Note: This is generally referred to as the aggregated uncertainty for the source.

8.6  Assessment of uncertainty for estimates of carbon dioxide emissions from combustion of fuels
 (1) In assessing uncertainty of the estimates of carbon dioxide emissions estimated using method 1 for a source that involves the combustion of a fuel, the assessment must include the statistical uncertainty associated with the following parameters:
 (a) the energy content factor of the fuel (as specified in column 3 of the following table or as worked out in accordance with item 1, 2 or 3 of section 7 of the uncertainty protocol);
 (b) the carbon dioxide emission factor of the fuel (as specified in column 4 of the following table or as worked out in accordance with item 1, 2 or 3 of section 7 of the uncertainty protocol);
 (c) the quantity of fuel combusted (as worked out in accordance with subsection (3) or as worked out in accordance with item 1, 2 or 3 of section 7 of the uncertainty protocol).

Item  Fuel Combusted                                                                                                     Energy content uncertainty level (%)  Carbon dioxide emission factor uncertainty level (%)