- to assess the advantages and drawbacks of different risk reduction options, primarily for the environment, on the use of trichloroethylene:
- to enable judgement as to whether the benefits of adopting the restrictions, outweigh the consequences to society as a whole of imposing the controls;
- to determine the best risk reduction strategy offering the greatest net benefits.
The European Union adopted the Existing Substances Regulation (793/93/EEC) on 23 March 1993. This initiated a major programme to collect basic information on high tonnage chemical substances to draw up priority lists identifying where there is the greatest concern, to assess any risk which may be posed to human health or the environment, and to decide whether any further controls are necessary through development of a risk reduction strategy. Where any proposed control measures include recommendations for restrictions on the marketing and use of substances, the rapporteur (Member State with the lead on the risk assessment) is required to submit an analysis of the advantages and drawbacks of the substance, and of the availability of replacement substances. The implication is that benefits as well as risks should be taken into account in developing controls on hazardous substances in current use, while examining the likely effectiveness, practicability, economic impact, and monitor ability of the risk reduction measure(s).
2.2. The responsibility for carrying out the environmental risk assessment rests with the Environment Agency (Chemicals Assessment Unit, National Centre for Ecotoxicology and Hazardous Substances) and the worker protection & human health assessment with the Health and Safety Executive.
The scope of the contract was extended to cover tetrachlorethylene