
Article 1 
The proposal by the International Commission for the Protection of the Rhine against Pollution, intended to supplement, in respect of mercury originating in sectors other than the chlor-alkali electrolysis industry, Annex IV to the Convention for the Protection of the Rhine against Chemical Pollution, is hereby adopted on behalf of the European Economic Community.
The text of the proposal is attached to this Decision.
Article 2 
This Decision shall be applicable without prejudice to the specific provisions in other Community rules, particularly Article 4 of Directive 84/156/EEC.
Article 3 
The President of the Council shall notify the Government of the Swiss Confederation, in accordance with the procedures laid down by the Chemical Convention, of the adoption of the proposal referred to in Article 1.
Done at Luxembourg, 24 June 1988.
For the Council
The President
M. BANGEMANN
that Annex IV to the Convention of 3 December 1976 be supplemented as follows in respect of mercury:

Substance or group of substances Origin Limit value in terms of the maximum concentration of a substance Limit value in terms of the maximum quantity of a substance Time limit for existing discharges Remarks
1 2 3 4 5 6
Mercury 
1. Chemical industries using mercury catalysts
    ,,,

1.1 For the production of vinyl chloride
 0,05 milligrams of mercury per litre of discharge 0,1 grams of mercury per tonne of vinyl chloride production capacity 1 July 1989
For existing discharges the provisional limit value of 0,1 milligrams of mercury per litre of discharge applies. For existing discharges the provisional limit value of 0,2 grams of mercury per tonne of vinyl chloride production capacity applies 1 July 1986

1.2 for the manufacture of other products
 0,05 milligrams of mercury per litre of discharge 5 grams of mercury per kilogram of mercury treated 1 July 1989 ,,,
For existing discharges the provisional limit value of 0,1 milligrams of mercury per litre of discharge applies For existing discharges the provisional limit value of 10 grams of mercury per kilogram treated applies 1 July 1986

2. The manufacture of mercury catalysts used in the production of vinyl chloride
 0,05 milligrams of mercury per litre of discharge 0,7 grams of mercury per kilogram of mercury treated 1 July 1989 
For existing discharges the provisional limit value of 0,1 milligrams of mercury per litre of discharge applies For existing discharges the provisional limit value of 1,4 grams of mercury per kilogram of mercury treated applies 1 July 1986

3. The manufacture of organic and non-organic mercury compounds (except the products covered by point 2)
 0,05 milligrams of mercury per litre of discharge 0,05 grams of mercury per kilogram of mercury treated 1 July 1989 
For existing discharges the provisional limit value of 0,1 milligrams of mercury per litre of discharge applies For existing discharges the provisional limit value of 0,1 grams of mercury per kilogram of mercury treated applies 1 July 1986

4. Manufacture of primary batteries containing mercury
 0,05 milligrams of mercury per litre of discharge 0,03 grams of mercury per kilogram of mercury treated 1 July 1989 ,,,
For existing discharges the provisional limit value of 0,1 milligrams of mercury per litre of discharge applies For existing discharges the provisional limit value of 0,05 grams of mercury per kilogram of mercury treated applies 1 July 1986

5. Non-ferrous metal industries
    ,,,,

5.1 Establishments for the recovery of mercury
 0,05 milligrams of mercury per litre of discharge  1 July 1989
For existing discharges the provisional limit value of 0,1 milligrams per litre of discharge applies  1 July 1986

5.2 Extraction and refining of non-ferrous metals
 0,05 milligrams of mercury per litre of discharge  1 July 1989
For existing discharges the provisional limit value of 0,1 milligrams of mercury per litre of discharge applies  1 July 1986

6. Establishments for the treatment of toxic waste containing mercury
 0,05 milligrams of mercury per litre of discharge  1 July 1989 ,,,
For existing discharges the provisional limit value of 0,1 milligrams of mercury per litre of discharge applies  1 July 1986




If necessary, limit values for other industries, such as paper, steel and coal-fired power stations, will be proposed by the International Commission at a later stage. In the meantime, governments will fix emission standards for mercury autonomously in accordance with Articles 3 and 4 of the Convention. These standards must take account of the best technical means available and must not be less stringent than the nearest comparable limit value in Annex IV.
Pursuant to Articles 14 and 19 of the Convention, these provisions will enter into force after their unanimous acceptance by the Contracting Parties to the Convention.
The Contracting Parties will notify their adoption to the Government of the Swiss Confederation which will acknowledge receipt of notification.
