Annual chemical intercomparison (in collaboration with all ICPs); Annual biological intercalibration (in collaboration with all ICPs); Report on 20 years of surface water monitoring; Twenty-fourth meeting of the Programme Task Force, to be held from 6 to 8 October 2008 in Budapest. ###>d) Vingt-quatrième réunion de l'Équipe spéciale du Programme, qui se tiendra du 6 au 8 octobre 2008 à Budapest.