Perchlorate : environmental occurence interactions and treatment 1. Perchlorate : challenges and lessons 2. The chemistry of perchlorate in the environment 3. Occurrence and formation of non anthropogenic perchlorate 4. Alternative causes of wide spread low concentration perchlorate impacts to groundwater 5. Stable isotope composition of chlorine and oxygen in synthetic and natural perchlorate 6. Recent developments in perchlorate detection 7. The ecotoxicology of perchlorate in the environment 8. Perchlorate toxicity and risk assessment 9. Using biomonitoring to assess human exposure to perchlorate 10. Recent advances in ion exchange for perchlorate treatment recovery and detection 11. Field demonstration using highly selective regenerable ion exchange and perchlorate destruction technologies for water treatment 12. The microbiology of perchlorate reduction and its bioremediative application 13. The biochemistry and genetics of microbial perchlorate reduction 14. Field demonstration of in situ perchlorate bioremediation in groundwater 15. Perchlorate removal by modified active carbon 16. Titanium catalyzed perchlorate reduction and applications 17. Membrane and other treatment technologies pros and cons