The reviews were finalized and were presented to the 26th session of the Governing Council/Global Ministerial Environment Forum in February 2011.
Following GC25, the third call for information on November 2009 asked for continuing to address the data and information gaps identified and to finalize the scientific reviews on lead and cadmium.
The draft final reviews of scientific information on lead and cadmium, together with their relevant companion documents, were amended to include the last submissions. Track changes versions of the draft final reviews of scientific information on lead and cadmium - versions of October 2010 - and their companion documents have been circulated via email to the members of the Lead and Cadmium Working Group (Deadline for comments: 5 November 2010).
Following GC24, the second call for information on April 2007 asked for filling the data and information gaps identified in the reviews. The interim versions of the scientific reviews of March 2008 were circulated for comments to the members of the Working Group on Lead and Cadmium. These comments and the information submitted by the stakeholders were compiled to produce the draft final scientific reviews of November 2008 that have been presented at the 25th session of the Governing Council/Global Ministerial Environment Forum in February 2009.
The interim versions of the scientific reviews of October 2006 were made available to the Governing Council at its 24th regular session in February 2007.
Members of the Working Group assisted in the drafting and finalization of the scientific reviews, first through two rounds of comments by mail, then through a Meeting of the Working Group on Lead and Cadmium, which took place in Geneva, Switzerland in September 2006.
The drafts were also sent to other Governments and/or organizations that, although they had not yet nominated a member to the working group, had submitted information to this process. The send-out was accompanied by a note explaining how the reviews were drafted and the types of comment and input being sought from working group members.
The submitted information was compiled to produce the first two drafts of the scientific reviews on May 24th 2006.
Governments, Intergovernmental and Non-Governmental Organizations were also invited to consider nominating members to the Working Group on lead and cadmium to assist UNEP in finalizing the reviews on lead and cadmium.
Following the 23rd session of the Governing Council, the first call for information on May 2005 invited stakeholders (Governments, IGOs, NGOs) to submit information on lead and cadmium, relevant to the preparation of the reviews and available at national level, focusing especially on long-range environmental transport, in order to inform future discussions of the Governing Council on the possible need for global action in relation to these two heavy metals.
As the drafting process followed in developing the 2002 UNEP Global Mercury Assessment report proved to be successful, ensuring a transparent process and broad ownership of its results and recommendations, it was decided to follow a similar process to develop the reviews of lead and cadmium, taking into account that the scope of the new reviews is more limited than that of the mercury assessment.