Recent critiques of air quality management approaches currently employed in developed and many developing
countries have suggested that efficiencies could be achieved if air quality management practices shifted from
pollutant-by-pollutant approaches to a comprehensive multipollutant approach in which emission reduction decisions
are based on relative risk and evaluated on their effectiveness in meeting environmental and health goals. This book
assesses our technical readiness to undertake such an approach, and it outlines the technical developments that will
be needed to achieve a risk-based approach air quality management that includes means for measuring the
effectiveness of management decisions.