List I
                 of families and groups of substances

     List  I  contains  the  individual substances which belong to the
families and groups of substances enumerated below, with the exception
of  those which are considered inappropriate to list I on the basis of
a low risk of toxicity, persistance and bioaccumulation.
     Such  substances  which  with regard to toxicity, persistance and
bioaccumulation  are  appropriate to list II are to be classed in list
II.
     1.  Organohalogen  compounds  and  substances which may form such
compounds in the aquatic environment
     2. Organophosphorus compounds
     3. Organotin compounds
     4. Substances which possess carcinogenic mutagenic or teratogenic
properties in or via the aquatic environment <*>
--------------------------------
     <*>  Where  certain  substances  in  list  II  are  carcinogenic,
mutagenic  or  teratogenic,  they  are  included in category 4 of this
list.

     5. Mercury and its compounds
     6. Cadmium and its compounds
     7. Mineral oils and hydrocarbons
     8. Cyanides.