This interim report is based on the agreement (PCA) signed between the Chemicals and Waste Branch of the UNEP (hereafter referred to as “UNEP”) and Research Centre for Toxic Compounds in the Environment (herea?er referred to as “RECETOX”), serving also as the Stockholm Convention Regional Centre for Capacity Building and the Transfer of Technology for the Central and Eastern Europe, to support capacity building activities on POPs monitoring, signed on 1 February 2016 (PCA/2015/UNEP, DTIE, Chemicals and Waste Branch/RECETOX). Overall objective of the agreement is to support UNEP in implemenKng three out of four GEF projects granted to UNEP to enhance implementaKon of the Stockholm ConvenKon by building capaciKes for POPs monitoring, providing training to laboratories and to supplement sampling materials unKl end of 2018.