1. Risk, toxicity and exposure assessment (R.J. Watts).

2. The metalloids - arsenic and selenium (J.A. Plant, F.M. Fordyce, D.G. Kinniburgh, P.L. Smedley).

3. Heavy metals in the environment (E. Callender).

4. Geochemistry of Hg in the environment (W.F. Fitzgerald, C.H. Lamborg).

5. Acid mine drainage (D.W. Blowes).

6. Geochemistry of radioactive environmental contamination (M.D. Siegel, C. Bryan).

7. Geochemistry of industrial mineral hazards (G.S. Plumlee).

8. Nutrients and eutrophication.

9. Salinization (A. Vengosh).

10. Acid deposition and acidification (S.A. Norton, J. Veselý).

11. Photochemical smog and tropospheric ozone (S. Sillman, V. O'Malley).

12. Hydrocarbon fuels and fuel oxygenates (I.M. Cozzarelli, A.L. Baehr).

13. Non-halogenated hydrocarbons and other petroleum distillates (T.A. Abrajano).

14. Halogenated hydrocarbons (P. Adriaens).

15. Pesticides (J.E. Barbash).

16. The geochemistry of waste disposal facilities (P.L. Bjerg, T.H. Christensen, H.-J. Albrechtsen, I.M. Cozzarelli).

17. Geochemical fingerprint (S.A. Macko).