Health risk tolerance test and risk assessment

According to current regulations, major projects are subject to an environm ental impact assessment. Within this framework, not only ecological criteri a have to be met, but also the possible health impact for the exposed popul ation must assessed. In the absence of limit values for carcinogenic substa nces in the air, the health impact assessment can be based on quantitative risk assessment. This technology was formerly developed for the assessment of cancer risk imposed by existing environmental exposures, but it is also suitable for the prediction of future exposures and their health consequenc es. This is demonstrated by using a planned toxic waste incinerator as a mo del.