COTJNCTL DIRECTIVE of 15 July 1980 on air quality limit values and guide values for sulphur dioxide and suspended particulates THE COUNCIL OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Economic Community, and in particular Articles 100 and 235 thereof, Having regard to the proposal from the commission, Having regard to the opinion of the European Parliament (l), Having regard to the opinion of the Economic and Social Committee ('), Whereas the European Communities' programmes of action on the environment of 1973 (3) and 1977 (9 provide that priority is to be given to measures against sulphur dioxide and suspended particulates because of their toxicity and the current state of knowledge of their effects on human health and the environment; Whereas, since any discrepancy between the provisions already applicable or being prepared in the various Member States with regard to sulphur dioxide and suspended particulates could give rise to unequal c...