Revisions to the European Treaty of Union require some form of environ
mental appraisal - primarily risk assessment and cost-benefit analysis
- of regulatory initiatives by the European Commission. A retrospecti
ve look at the emergence of environmental appraisal also shows that, w
hile the Commission has made great advances in introducing cost-benefi
t or cost-effectiveness appraisals in recent years, past environmental
decisions and overall environmental policy have not been informed by
systematic appraisal techniques. Nor is it clear what role is now bein
g played by risk assessments. While it is impossible to gauge the exte
nt to which systematic appraisal procedures will save on regulatory an
d compliance expenditures, some indications are provided of the costs
of past neglect of these procedures.