On July 16, 2009, the WCI published the Final Essential Requirements for Mandatory Reporting (the "ERs") to be implemented by the WCI Partner jurisdictions.  On September 22, 2009, the U.S. EPA adopted its final Mandatory Greenhouse Gas Reporting Rule (the "EPA rule") for greenhouse gas emissions. 

As many U.S. facilities in the WCI region will be subject to both reporting programs, the WCI Partners were concerned that the existence of two different reporting systems in a WCI state could result in the imposition of duplicative or conflicting reporting obligations on facilities.  The WCI Partners therefore directed the WCI Reporting Committee to develop amended ERs that are harmonized with the EPA rule, and these were published on November 12, 2010 (see Harmonization of Essential Requirements for Mandatory Reporting in U.S. Jurisdictions with EPA Mandatory Reporting Rule). 

To ensure that the amended ERs are methodologically consistent with the harmonized ERs but appropriate for use in the Canadian Partner jurisdictions, the WCI released two packages for Canada to stakeholders.  The first draft for stakeholder comment was released on September 8, 2010.  The second draft for stakeholder comment was released on October 29, 2010. 

This narrative document and the attached amended Final Essential Requirements for Mandatory Reporting contain the WCI's adoption of amended quantification methods for use in Canadian Partner jurisdictions for source categories proposed in the harmonization packages.  These quantification methods replace those in the original ERs and are designed to be adopted for use by Canadian jurisdictions for 2011 calendar year emissions, which will be due to be reported in 2012.