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1.
Convention on Long-range Transboundary Air Pollution.  Geneva, 13 November 1979
1.a.
Protocol to the 1979 Convention on Long-range Transboundary Air Pollution on Long-term Financing of the Co-operative Programme for Monitoring and Evaluation of the Long-range Transmission of Air Pollutants in Europe EMEP).  Geneva, 28 September 1984
1.b.
Protocol to the 1979 Convention on Long-Range Transboundary Air pollution on the Reduction of Sulphur Emissions or their Transboundary Fluxes by at least 30 per cent.  Helsinki, 8 July 1985
1.c.
Protocol to the 1979 Convention on long-range transboundary air pollution concerning the control of emissions of nitrogen oxides or their transboundary fluxes.  Sofia, 31 October 1988
1.d.
Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution concerning the Control of Emissions of Volatile Organic Compounds or their Transboundary Fluxes.  Geneva, 18 November 1991
1.e.
Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution on Further Reduction of Sulphur Emissions.  Oslo, 14 June 1994
1.f.
Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution on Heavy Metals.  Aarhus, 24 June 1998
1.g.
Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution on Persistent Organic Pollutants.  Aarhus, 24 June 1998
1.h.
Protocol to the 1979 Convention on Long-range Transboundary Air Pollution to Abate Acidification, Eutrophication and Ground-level Ozone.  Gothenburg (Sweden), 30 November 1999
1.i.
Amendments to the Text and to Annexes I, II, III, IV, VI and VIII to the 1998 Protocol on Persistent Organic Pollutants.  Geneva, 18 December 2009
1.j.
Amendments to Annexes I and II to the 1998 Protocol on Persistent Organic Pollutants.  Geneva, 18 December 2009
1.k.
Amendment of the text and annexes II to IX to the Protocol to the 1979 Convention on Long-range Transboundary Air Pollution to Abate Acidification, Eutrophication and Ground-level Ozone and the addition of new annexes X and XI.  Geneva, 4 May 2012
 
      Amendment of the text and annexes II to IX to the Protocol to the 1979 Convention on Long-range Transboundary Air Pollution to Abate Acidification, Eutrophication and Ground-level Ozone and the addition of new annexes X and XI.  
2.
Vienna Convention for the Protection of the Ozone Layer.  Vienna, 22 March 1985
2.a.
Montreal Protocol on Substances that Deplete the Ozone Layer.  Montreal, 16 September 1987
2.b.
Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer.  London, 29 June 1990
2.c.
Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer.  Copenhagen, 25 November 1992
2.d.
Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer adopted by the Ninth Meeting of the Parties.  Montreal, 17 September 1997
2.e.
Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer.  Beijing, 3 December 1999
3.
Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and their Disposal.  Basel, 22 March 1989
3.a.
Amendment to the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and their Disposal.  Geneva, 22 September 1995
3.b.
Basel Protocol on Liability and Compensation for Damage Resulting from Transboundary Movements of Hazardous Wastes and their Disposal.  Basel, 10 December 1999
4.
Convention on Environmental Impact Assessment in a Transboundary Context.  Espoo, Finland, 25 February 1991
4.a.
Amendment to the Convention on Environmental Impact Assessment in a Transboundary Context.  Sofia, 27 February 2001
4.b.
Protocol on Strategic Environmental Assessment to the Convention on Environmental Impact Assessment in a Transboundary Context.  Kiev, 21 May 2003
4.c.
Amendment to the Convention on Environmental Impact Assessment in a Transboundary Context.  Cavtat, 4 June 2004
5.
Convention on the Protection and Use of Transboundary Watercourses and International Lakes.  Helsinki, 17 March 1992
5.a.
Protocol on Water and Health to the 1992 Convention on the Protection and Use of Transboundary Watercourses and International Lakes.  London, 17 June 1999
5.b.
Amendments to Articles 25 and 26 of the Convention on the Protection and Use of Transboundary Watercourses and International Lakes.  Madrid, 28 November 2003
6.
Convention on the Transboundary Effects of Industrial Accidents.  Helsinki, 17 March 1992
7.
United Nations Framework Convention on Climate Change.  New York, 9 May 1992
7.a.
Kyoto Protocol to the United Nations Framework Convention on Climate Change.  Kyoto, 11 December 1997
7.b.
Amendment to Annex B of the Kyoto Protocol to the United Nations Framework Convention on Climate Change.  Nairobi, 17 November 2006
7.c.
Doha amendment to the Kyoto Protocol.  Doha, 8 December 2012
8.
Convention on biological diversity.  Rio de Janeiro, 5 June 1992
8.a.
Cartagena Protocol on Biosafety to the Convention on Biological Diversity.  Montreal, 29 January 2000
8.b.
Nagoya Protocol on Access to Genetic Resources and the Fair and Equitable Sharing of Benefits Arising from their Utilization to the Convention on Biological Diversity.  Nagoya, 29 October 2010
8.c.
Nagoya - Kuala Lumpur Supplementary Protocol on Liability and Redress to the Cartagena Protocol on Biosafety.  Nagoya, 15 October 2010
9.
Agreement on the Conservation of Small Cetaceans of the Baltic, North East Atlantic, Irish and North Seas.  New York, 17 March 1992
9.a.
Amendment to the Agreement on the Conservation of Small Cetaceans of the Baltic and North Seas.  Esbjerg, 22 August 2003
10.
United Nations Convention to Combat Desertification in those Countries Experiencing Serious Drought and/or Desertification, Particularly in Africa.  Paris, 14 October 1994
11.
Lusaka Agreement on Co-operative Enforcement Operations Directed at Illegal Trade in Wild Fauna and Flora.  Lusaka, 8 September 1994
12.
Convention on the Law of the Non-Navigational Uses of International Watercourses.  New York, 21 May 1997
13.
Convention on Access to Information, Public Participation in Decision-Making and Access to Justice in Environmental Matters.  Aarhus, Denmark, 25 June 1998
13.a.
Protocol on Pollutant Release and Transfer Registers.  Kiev, 21 May 2003
13.b.
Amendment to the Convention on Access to Information, Public Participation in Decision-Making and Access to Justice in Environmental Matters.  Almaty, 27 May 2005
14.
Rotterdam Convention on the Prior Informed Consent Procedure for Certain Hazardous Chemicals and Pesticides in International Trade.  Rotterdam, 10 September 1998
15.
Stockholm Convention on Persistent Organic Pollutants.  Stockholm, 22 May 2001
16.
Protocol on Civil Liability and Compensation for Damage Caused by the Transboundary Effects of Industrial Accidents on Transboundary Waters to the 1992 Convention on the Protection and Use of Transboundary Watercourses and International Lakes and to the 1992 Convention on the Transboundary Effects of Industrial Accidents.  Kiev, 21 May 2003



* Treaties with no links have no CTCs available