Third Ministerial Conference

At the Third Ministerial Conference held in the Hague in March 1990, a common list of substances was agreed for which inputs via rivers and estuaries to the North Sea should be reduced by 50% by 1995 using 1985 as baseline. The list of "priority hazardous substances" includes all the UK Red List substances, except PCBs (for which separate measures have been agreed). Equal reductions are to be made in atmospheric emission by 1999 for the substances arising predominantly from diffuse sources, provided that the application of Best Available Technology (BAT) (including the use of strict emission standards) enables such reductions to be made.

A list of additional substances has also been identified which should be assessed for future priority action (see table below).

List of 'priority hazardous substances' agreed at the Third North Sea Conference

Mercury Cadmium Copper Zinc
Lead Arsenic Chromium Nickel
Drins HCH DDT Pentachloro-phenol
Hexachloro-benzene Hexachlorobutadiene Carbon tetrachloride Chloroform
Trifluralin Endosulfan Simazine Atrazine
Tributyltin-compounds Triphenyltin-compounds Azinphos-ethyl Azinphos-methyl
Parathion Parathion-methyl Dichlorvos Trichloro-ethylene
Tetrachloro-ethylene Trichloro-benzene Dichloroethane 1,2-Trichloro-ethane
Dioxins Fenitrothion Fenthion Malathion

In addition, a number of agreements were reached at the Third North Sea Conference, including a commitment to make substantial reductions in the quantities of pesticides reaching the North Sea with special attention to phasing out those pesticides which are the most persistent, toxic and liable to bioaccumulate (see table below).

Pesticides that are to be restricted or banned

Aldrin Atrazine
Carbon tetrachloride Chlordane
Chlorpicrin 1,2-Dibromoethane
1,2-Dichloroethane Dieldrin
Endrin Fluoroacetic acid and its derivatives
Heptachlor Hexachlorobenzene
Hexachlorocyclohexane(a and b isomers) Mercury compounds
Pentachlorophenol Nitrofen
Quintozene Polychlorinated terpenes

There are a number of substances that would have been restrictedor banned but are not currently used as pesticides (see table below).

Substances which would have been included in Table above but which are not currently in use as pesticides

Acrylonitrile Aramite
Lead compounds Cadmium compounds
Captafol Chlordecone (Kepone)
Chlordimeform Chloroform
Crimidine Isobenzan
Isodrin Kelevan
Morfamquat Toxaphene
Selenium compounds 2,4,5-T

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