× 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 IV/4: Further Amendment of the Protocol Document type Decision Reference number IV/4 Date Nov 23, 1992 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 Fourth Meeting of the Parties decided in Dec. IV/4 to adopt, in accordance with the procedure laid down in paragraph 4 of Article 9 of the Vienna Convention for the Protection of the Ozone Layer, the Amendment to the Montreal Protocol as set out in Annex III to the report of the Fourth Meeting of the Parties.