The main objective of this new Task Group is to strengthen the competence internationally on environmental impact assessment. This is to be achieved based on using adequate techniques to characterize radionuclides species, linking and quantifying radionuclides species to sources and release scenarios, linking and quantifying radionuclides species to environmental airborne, marine or freshwater transport processes including models, identifying and quantifying radionuclides species and transformation processes influencing mobility and bioavailability of radionuclides, relating the distribution of different radionuclide species to external doses, and relating radionuclides species to internal redistribution within organisms to improve dose estimates for biota. A first workshop has been held in Monaco, September 2002 and the second at IAEA-MEL, Monaco, 30th September – 2nd October 2005.
A third one intitled "Radionuclide Speciation Workshop" will be held in conjunction with the 53rd Annual Radiobioassay and Radiochemical Measurements Conference, on 27th – 28th October 2007 at Jackson Hole, WY, USA.