To determine whether a Party has a need to review and update its national implementation plan, the Party concerned should assess whether it is affected by any external or internal factors, such as those referred to in paragraphs 4 and 5 of the annex to decision SC-1/12. External factors include, for example, changes in obligations arising from amendments to the Convention or its annexes, including the addition of chemicals to Annexes A, B or C, while internal factors could be linked to changes in national priorities or in scope of problem to be addressed.
For those changes in the obligations arising from amendments to the Convention or its annexes, a Party will review and update its implementation plan, and transmit the updated plan to the Conference of the Parties within two years of the entry into force of the amendment for it, consistent with paragraph 1 (b) of the Convention (according to paragraph 7 of the annex to decision SC-1/12).
At its fourth meeting in 2009, the Conference of the Parties (COP) to the Stockholm Convention adopted decisions to amend the Convention by adding 9 new chemicals to its Annexes. These amendments entered into force on 26 August 2010. Within two years of this date, most Parties to the Convention had to transmit to the COP NIPs that had been updated to address the obligations arising from the listing of these new POPs.