Part 1 Overview: introduction and overview of difficulties encountered in developing comparative rankings of environmental problems, C.R. Cothern current concerns regarding the implementation of risk-based management - how real are they?, W.V. Garetz. Part 2 Ecological health risks: introduction, W. Cooper ecological knowledge to environmental problems - ecological risk assessment, D. Policanski the threat of greenhouse warming, R. Coppock. Part 3 Human Health Risks: introduction, P. Deisler revising the risk assessment paradigm - limits on the quantitative ranking of environmental problems, E. Silbergeld is it possible to do quantitative assessment of relative risk, J. Wilson noncancer health endpoints - approaches to quantitative risk assessment, W. Farland and M. Dourson risk assessment gapsiosis, A. Gregory estimating viral disease risk from drinking water, J. Rose and C. Gerba. Part 4 Quantitative risk assessment problem areas and issues: introduction, M. Lippmann atmospheric nitrogen oxides - a bridesmaid revisited, J. Bachmann temporal variations in exposure assessment, N. Kim an integrated approach to risk characterization of multiple pathway chemical exposures, C. DeRosa, M. Mumtaz, et al a method for obtaining guidance for the combination of qualitative rankings by cancer and noncancer risks into a single, qualitative health risk ranking, P. Deisler the use of statistical insignificance in the formulation or risk-based standards for carcinogens, R.E. Albert and R. Shulka possible carcinogenic hazards from natural and synthetic chemicals - setting priorities, L. Gold, T. Slone, et al the impact of data gaps in EPA's regional comparative risk projects, R. Day the use of economic data and analysis in comparative risk project - questions of policy and reliability, P. Reisler. Part 5 Thoughts for the future: introduction, C.R. Cothern the role of evidential reason and epistemic discourse in establishing the risk of environmental carcinogens, D. Crawford-Brown and J. Arnold how to move quickly to risk-based environmental management - a specific proposal, W. Garetz.
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