× Information on this section of ECOLEX comes from the InforMEA Portal which compiled information from MEA Secretariats with the support of the European Union. The accuracy of the information displayed is the responsibility of the originating data source. In case of discrepancy the information as displayed on the respective MEA website prevails. Decision II/20: Third Meeting of the Parties Document type Decision Reference number II/20 Date Jun 27, 1990 SourceUNEP, InforMEA Status Active Subject Waste & hazardous substances, Air & atmosphere Treaty Montreal Protocol on Substances that Deplete the Ozone Layer (Sep 16, 1987) Meeting Website ozone.unep.org Abstract The Second Meeting of the Parties decided in Dec. II/20 to convene the Third Meeting of the Parties from 19 to 21 June 1991 in conjuction with and at the same venue as the second meeting of the Conference of the Parties to the Vienna Convention.