IMPEL was represented at a workshop organized by the Secretariat for countries of Central and Eastern Europe in October 2006 . IMPEL , and the countries participating in the IMPEL Transfrontier Shipment ( IMPEL-TFS ) project , also provided valuable information that was used in the Training Manual for the Enforcement of Laws Implementing the Basel Convention : Guidance for Safe and Effective Detection , Investigation and Prosecution of Illegal Traffic in Hazardous and other Wastes .