Attachment

United Kingdom

Recommendation from the International Commission for the Protection of the Rhine against Pollution to supplement Annex IV to the Convention on the Protection of the Rhine against Chemical Pollution, signed in Bonn on 3 December 1976

The International Commission for the Protection of the Rhine against Pollution,

Having regard to the Convention on the Protection of the Rhine against Chemical Pollution, signed in Bonn on 3 December 1976,

Having regard in particular to Articles 3, 4, 5 and 14 thereof,

Proposes to the Contracting Parties to the Convention that Annex IV to the Convention of 3 December 1976 be supplemented as follows in respect of mercury:

LIMIT VALUES

(Article 5)

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
Mercury	Chlor-alkali electrolysis establishments	The limit values in terms of the maximum concentration of mercury are calculated by dividing the limit values in terms of the maximum quantity of mercury by the quantity of water used per tonne of chlorine production capacity	A monthly average of 0·5 gram of mercury per tonne of chlorine production capacity. A daily average of 2 grains of mercury per tonne of chlorine production capacity	1 July 1983	The limit values set out in the preceding columns arc to be applied to mercury deriving from production activity and must therefore be observed at the outlet from the production plants. As regards measuring, analyzing and sampling methods, see the recommendation of the International Commission dated 28 December 1979

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

Mercury

Chlor-alkali electrolysis establishments

The limit values in terms of the maximum concentration of mercury are calculated by dividing the limit values in terms of the maximum quantity of mercury by the quantity of water used per tonne of chlorine production capacity

A monthly average of 0·5 gram of mercury per tonne of chlorine production capacity. A daily average of 2 grains of mercury per tonne of chlorine production capacity

1 July 1983

The limit values set out in the preceding columns arc to be applied to mercury deriving from production activity and must therefore be observed at the outlet from the production plants.

As regards measuring, analyzing and sampling methods, see the recommendation of the International Commission dated 28 December 1979

Pursuant to Articles 14 and 19 of the Convention, the measures set out in the above table will enter into force after their unanimous adoption by the Contracting Parties to the Convention. The Contracting Parties will notify their adoption to the Government of the Swiss Confederation, which will acknowledge reception of notification.